30results about How to "High bearing pressure" patented technology

The invention relates to a double hobbing cutter rock hobbing comprehensive test bed, which relates to rock tunnel boring machine hobbing cutter experimental equipment. The double hobbing cutter rock hobbing comprehensive test bed comprises a hydraulic system, a worktable, cutters, cutter holders, guide rails, a test system, a control system and the like. The worktable is pulled by a hydraulic system to move quickly and a test piece drives the hobbing cutters to hob rocks, the position of the test bed in the direction vertical to the motion direction of the worktable is adjusted by a screw, and the pressure plates at two ends of the worktable lock the test piece. The cutter holders are connected with cutter hydraulic push / pull rods through connecting discs; seven steel-embedding sliding blocks on four sides are matched with the steel-embedding guide rails on a test bed body to absorb the impact exerted by lateral loads on the hydraulic push rods; the hydraulic system drives the entire cutter holders to enter penetration regulation and keep a hobbing pressure. The test bed is reasonable, simple and safe in structural design and high in bearing capacity and impact strength.

The invention discloses an air drilling double-wall drill rod, consisting of an external pipe body and an internal pipe body. The upper end part of the external pipe body is provided with an internalscrew thread and an internal clamp table; the lower end part of the external pipe body is provided with an external screw thread, wherein the nominal diameter, the dentoform and the thread pitch of the external screw thread are as the same as those of the internal screw thread at the upper end part, and the screw thread length of the external screw thread is equal to that of the internal screw thread at the upper end part; the upper end part of the internal pipe body is fixedly provided with a pipe sleeve type internal pipe joint; a pipe body in the lower part of the internal pipe joint is fixedly provided with a ventilate pan which is matched with the inner diameter of the internal clamp table of the external pipe body, wherein the outer diameter of the internal pipe joint is less than the inner diameter of the external pipe body; the internal pipe body is hanged in the external pipe body by the ventilate pan thereof; the upper end face of the internal pipe joint is parallel with theupper end face of the external pipe body; the lower end face of the internal pipe body enters into the internal pipe joint of the other internal pipe body and is butt joint with the upper end face ofthe other internal pipe body when the external screw thread at the lower end part of the external pipe body is screwed into the internal screw thread of the other external pipe body; and the externalperipheral face of the internal pipe body is sealed with the internal peripheral face of the internal pipe joint of the other internal pipe body. The air drilling double-wall drill rod is convenient in maintenance.

The invention discloses a seat, comprising a seat plate and a backrest, wherein the seat plate and backrest comprise a plurality of arc plates of which the cross sections are in an arc shape; the arc plates are set to be undulated wave shapes; each arc plate comprises an outer arc surface and an inner arc surface; the radius of each inner arc surface is greater than that of each outer arc surface; and meanwhile, a plurality of convex massage beads are also arranged on the arc plates. Through arrangement of the seat plate and the backrest, which are composed of the arc plates, so that the surfaces of the seat plate and the backrest are in the undulated wave shapes, and the comfort level of the seat plate and the backrest is increased; the radius of the inner arc surface of each arc plate is greater than that of the radius of each outer arc surface, and the bearing pressure of the arc plates is increased, thus the service life of the seat plate is prolonged; meanwhile, the massage beads are additionally arranged on the arc plates, so that people can be massaged when working or studying in the seat.

The invention provides a preparation technique for a steel plate terrace of an industrial workshop. The preparation method comprises the steps that modular steel plate concrete elements are adopted, and the modular steel plate concrete elements are laid on a concrete cushion which is prepared in advance; and then long lacing bars are arranged between all the steel plate concrete elements, gaps are filled and compacted with fine aggregate concrete, and the integrity of the whole surface layer is guaranteed. By the adoption of the preparation technique, pits and sunken parts of a traditional steel plate terrace can be eliminated, and the phenomena of desoldering and upwarping of the connection portion at the ends of a steel plate are also eliminated; the effect that a steel plate ground is smooth in the user condition is guaranteed, and the integrity is firm; in addition, through the modular laying, no large hoisting equipment is needed, the labor is greatly saved, and the laying construction speed is high; multiple functional technical requirements for the bearing capacity, abrasion resistance, high-temperature resistance and the like of the cast terrace can be met; and the preparation technique has extremely high practical value.

The invention discloses a hollow plastic plate and a manufacturing method thereof. The hollow plastic plate comprises a middle hollow plate body, wherein a plurality of disordered bubbles are formed in the hollow plate body, and solid plates are fixed to a top face and a bottom face of the hollow plate body. Materials in a set proportion can be rapidly placed in a mixing device, gas mixing is adopted, the mixing effect is good, mixing is rapid, and the mixing time is greatly prolonged. The middle part of the plate contains a plurality of hollow micro bubbles, so the weight of the plate is reduced, hole walls among the bubbles form a zigzag structure, i.e., the length of the plate is increased, so the plate has better heat preservation and heat insulation capabilities, a large hollow structure is dispersed into a more uniform hollow structure, and uniformity of the bearing pressure of the plate is improved.

The invention discloses a buried thermal insulation fixed knot. The fixed knot is characterized by comprising a core pipe, a thermal insulation layer, a high-efficiency hard thermal insulation layer and an outer pipe, wherein the high-efficiency hard thermal insulation layer is arranged between the core pipe and the outer pipe, and is connected with the core pipe and the outer pipe through welding points; and the thermal insulation layer is filled between the core pipe and the outer pipe. The buried thermal insulation fixed knot adopts a direct welding structure of the high-efficiency hard thermal insulation layer and the core pipe and the outer pipe, so that the bearing pressure of the fixed knot is greatly enhanced, and a fixed effect is achieved; the high-efficiency hard thermal insulation layer stops the heat transfer between the core pipe and the outer pipe, so that the heat of the core pipe cannot be transferred or is little transferred; and the buried thermal insulation fixed knot is simple in structure, high in bearing pressure, strong in adaptability, stable in transmission performance, low in heat conducting coefficient, obvious in thermal insulation effect and prominent in energy saving effect.

The invention provides preparation process for wedge joint boards. The preparation process includes steps of chipping wood log by the aid of a plurality of saws, trimming, drying, flaking, broaching, butting, slitting, gluing, hot pressing, reinforcing bottoms, sanding, sawing edges, packing and finally warehousing. The preparation process overcomes shortcomings of the prior art, is novel, is applicable to mass production and solves the problem of warping of common boards.

The invention provides a traction apparatus of a cross-country tractor. The traction apparatus comprises a traction box, a traction shaft, a traction shaft fixing box, a first traction main pin, a second traction main pin, a wearproof flat gasket, a locking plate and a traction shaft fixing nut, wherein a pair of connectors I is arranged at the upper part of the rear end of the traction box, while a pair of connectors II is arranged at the lower part of the same; a shaft sleeve is mounted on the traction shaft; the traction shaft is mounted in the traction shaft fixing box and fastened by the traction shaft fixing nut; the traction shaft is a hollow shaft; an upper connecting lug, a lower connecting lug, a left connecting lug and a right connecting lug are arranged at the front end of the traction shaft; the upper connecting lug is connected with the connector I through the first traction main pin; the lower connecting lug is connected with the connector II through the second traction main pin; grooves are formed on both upper and lower ends of the first traction main pin and the second traction main pin; the first traction main pin and the second traction main pin both both are locked by the opening of the locking plate; the wearproof flat gasket is mounted at the lower end face of the traction shaft in contact with the traction box. The traction apparatus of the cross-country tractor is capable of reducing the deformation of the main pins, the abrasion of the main pins and the abrasion of the traction box, rational in spatial arrangement, high in carrying capacity and high in stability.

The invention discloses a production method of a plastic-based paper composite pipe and in particular relates to a composite pipe which is formed by spraying on a metal core rod and taking a piece of paper as a filler. The production method of the plastic-based paper composite pipe comprises the following steps: spraying heated liquefied plastic on a rotary mandril mould to form a pipeline inner cavity, spraying heated liquefied plastic on the outer wall of the pipeline inner cavity and forming a plastic and paper adherend by virtue of a porous paper tape at the same time, and spraying heated liquefied plastic on the outer wall of the plastic and paper adherend to form a pipeline outer wall. The plastic-based paper composite pipe is low in cost, high in strength and resistant to corrosion, takes plastic as a base material and the paper as the filler, adopts parts universal with the existing plastic pipe fitting, can be applied to occasions of construction water, farm irrigation, outdoor cable threading, gas and liquid delivery and the like and has high practicability.

The invention discloses a loading type glass fiber reinforced plastic grille panel. The loading type glass fiber reinforced plastic grille panel comprises an upper core plate and a lower core plate, wherein a plurality of first T-shaped supports are arranged on the upper surface of the upper core plate, a plurality of second T-shaped supports are arranged on the lower surface of the lower core plate, a lug is arranged on the upper surface of each first T-shaped support, and a raised line is arranged on the lower surface of the first T-shaped support. The loading type glass fiber reinforced plastic grille panel has the advantages that the structure is reasonable, the load coefficient is high, the bearing pressure is high, transportation is convenient, the safety coefficient is high, the production cost is low, the working efficiency is high and the grille panel cannot be damaged easily.

The invention discloses a spiral secondary extrusion dehydrator which comprises a device body, wherein the device body comprises a mounting table, supporting legs, a main motor, a speed reducer, an alloy dehydration roller, a shell and a spiral feeder, the mounting table is located at the bottom end of the device body, the main motor and the speed reducer are both mounted at the rear end of the mounting table, the main motor and the speed reducer are connected through a C-shaped belt, the shell is mounted at the front end of the top of the mounting table, the rear end of the shell is provided with a main machine feeding port, the alloy dehydration roller is installed in the shell, the front end of the speed reducer is connected with the rear end of the alloy dehydration roller through a driving shaft, and the spiral is a feeding machine and is mounted at the top of the main machine feeding port. The device can effectively extrude out water in materials, so that the dryness of the materials is improved, workers can conveniently use the device in the related agricultural field, the burden of the workers can be relieved, and the efficiency of the workers is improved.

The invention discloses a boarding system of a large mine car. The boarding system comprises a boarding mechanism, a lifting cylinder, an electric pump and an electric appliance system. The boarding mechanism comprises a boarding ladder and a pin, wherein one end of the boarding ladder is hinged to a car chassis, the lugs of the boarding ladder are hinged to the piston rod of the lifting cylinder through the pin, and the lifting cylinder pushes the boarding mechanism to turn over around the hinge point of the boarding ladder and the car chassis. The lifting cylinder is connected with a hydraulic one-way valve to allow the boarding mechanism hinged to the piston rod of the lifting cylinder to keep a certain turning-over angle. The electric pump powers the lifting cylinder. The electric appliance system is a control device. The boarding system has the advantages that an external power supply is used, the electric pump can be independently operated on or off the mine car, telescoping of the piston rod of the lifting cylinder is achieved through hydraulic oil, and the boarding ladder can turn over freely; the boarding and alighting function of the common boarding ladder is brought into play, and boarding and alighting postures conform to the requirements of ergonomics and large car ground clearance.

The invention discloses a sliding track type diamond section insulator. The sliding track type diamond section insulator structurally comprises connector wire clamps, a bridge insulator, two metal sliding tracks and two insulating sliding tracks. The two metal sliding tracks and the two insulating sliding tracks are mutually spaced to form a diamond structure, the two longitudinal ends of the diamond structure are connected with the connector wire clamps respectively, the sliding track type diamond section insulator is connected with a contact wire on a running line through the connector wire clamps, and the two transverse ends of the diamond structure are connected with the bridge insulator. Overhead contact line sectionalizer insulating rods are adopted for the insulating sliding rails and structurally comprise inside composite insulating rods and outside ceramic composite material pieces, and the composite insulating rods are sleeved with the ceramic composite material pieces. The composite insulating rods are good in tension bearing capacity and are sleeved with the multiple stages of composite material pieces in series connection, so that arc resistance is achieved, damage is not likely to occur, the service cycle is long, and the problems that in the prior art, insulating sliding tracks are not resistant to wear, likely to be carbonized, not resistant to arcs and short in service life and need to be regularly replaced are solved.

The invention relates to a hydraulic pulse-type vertical shock isolating device, which comprises installation base plates, a hydraulic shock isolating unit and supporting springs. The hydraulic pulse-type vertical shock isolating device is characterized in that the hydraulic shock isolating unit and the supporting springs are installed between two installation base plates which are arranged in parallel, the hydraulic shock isolating unit comprises an upper base, a lower base, an upper hydraulic cylinder, a lower hydraulic cylinder and a hydraulic control system, the hydraulic control system consists of a hydraulic source, an oil compensating loop and a shock isolating loop, the upper base and the lower base are arranged in parallel, the cylinder body of the upper hydraulic cylinder is fixed with the upper base, the cylinder body of the lower hydraulic cylinder is fixed with the lower base, piston rods of the upper hydraulic cylinder and the lower hydraulic cylinder are relatively connected together, the cylinder bodies of the upper hydraulic cylinder and the lower hydraulic cylinder are serially connected with each other through the hydraulic control system, and a hydraulic cylinder connecting plate is fixedly arranged between the piston rods of the upper hydraulic cylinder and the lower hydraulic cylinder. The hydraulic pulse-type vertical shock isolating device has the advantages of large damping force, flexible arrangement, quick response, convenience in installation, debugging and maintenance and compact structure, and has supporting and shock isolating dual functions.

The invention discloses a five-layer composite stainless steel pot. The five-layer composite stainless steel pot comprises a first composite layer, a second composite layer, a third composite layer, a fourth composite layer and a fifth composite layer, wherein the first composite layer, the second composite layer, the third composite layer, the fourth composite layer and the fifth composite layer attach together through high-temperature sintering-pressing in the sequence from inside to outside. According to the five-layer composite stainless steel pot, the composite layers are combined through the high-temperature sintering-pressing, the heating is uniform, the bearing pressure is large, the load is uniform, and the appearance is elegant.

The invention discloses a hollow plastic plate and a manufacturing method thereof. The hollow plastic plate comprises a middle hollow plate body, wherein a plurality of disordered bubbles are formed in the hollow plate body, and solid plates are fixed to a top face and a bottom face of the hollow plate body. Materials in a set proportion can be rapidly placed in a mixing device, gas mixing is adopted, the mixing effect is good, mixing is rapid, and the mixing time is greatly prolonged. The middle part of the plate contains a plurality of hollow micro bubbles, so the weight of the plate is reduced, hole walls among the bubbles form a zigzag structure, i.e., the length of the plate is increased, so the plate has better heat preservation and heat insulation capabilities, a large hollow structure is dispersed into a more uniform hollow structure, and uniformity of the bearing pressure of the plate is improved.

The invention relates to a high-strength invisible mesh reinforcement wood residue plate and a manufacturing method thereof. The high-strength invisible mesh reinforcement wood residue plate is fine in toughness, high in bearing strength, large in pressure and not easy to break in water. The manufacturing method includes the steps: (1) adding 20-25 parts of wood residue powder into 100 parts of wood refuse blocks, uniformly mixing the wood residue powder and the wood refuse blocks, and then drying the mixture at high temperature; (2) adding 0.05-0.15 part of aramid fibers into mixed materials obtained in the first step and uniformly mixing the aramid fibers and the mixed materials; (3) adding 10-20 parts of glue into the mixed materials obtained in the second step and uniformly mixing the glue and the mixed materials; (4) opening a press, firstly placing a single-surface glue leather on the lower portion, adding the mixed materials obtained in the third step, and then covering the upper portion of the mixed materials with a poplar bark; (5) starting the press to perform heat pressing for the mixed materials in the fourth step at the high temperature to obtain the high-strength invisible mesh reinforcement wood residue plate. The water content of the mixed materials is lower than 8%, the temperature of the press is controlled to range from 180 DEG C to 190 DEG C, and the pressure of the press is controlled to range from 800 tons to 1000 tons. The high-strength invisible mesh reinforcement wood residue plate has the advantages that the plate is fine in toughness, large in bearing pressure and high in strength, cannot be broken, and cannot expand in damping.

The invention provides a traction apparatus of a cross-country tractor. The traction apparatus comprises a traction box, a traction shaft, a traction shaft fixing box, a first traction main pin, a second traction main pin, a wearproof flat gasket, a locking plate and a traction shaft fixing nut, wherein a pair of connectors I is arranged at the upper part of the rear end of the traction box, while a pair of connectors II is arranged at the lower part of the same; a shaft sleeve is mounted on the traction shaft; the traction shaft is mounted in the traction shaft fixing box and fastened by the traction shaft fixing nut; the traction shaft is a hollow shaft; an upper connecting lug, a lower connecting lug, a left connecting lug and a right connecting lug are arranged at the front end of the traction shaft; the upper connecting lug is connected with the connector I through the first traction main pin; the lower connecting lug is connected with the connector II through the second traction main pin; grooves are formed on both upper and lower ends of the first traction main pin and the second traction main pin; the first traction main pin and the second traction main pin both both are locked by the opening of the locking plate; the wearproof flat gasket is mounted at the lower end face of the traction shaft in contact with the traction box. The traction apparatus of the cross-country tractor is capable of reducing the deformation of the main pins, the abrasion of the main pins and the abrasion of the traction box, rational in spatial arrangement, high in carrying capacity and high in stability.

The invention discloses a plastic base paper composite pipe and particularly relates to a composite pipe formed by spraying plastic on a metal core rod and with paper as filler. The composite pipe is characterized in that heated liquefied plastic is coated on a rotating core rod mould to form a pipe inner cavity, the heated liquefied plastic is coated on the outer wall of the pipe inner cavity, simultaneously a porous paper belt is utilized to form a bonding body of the plastic and the paper, and the heated liquefied plastic is coated on the outer wall of the bonding body of the plastic and the paper to form the outer wall of the pipe. The pipe is low in cost, high in strength and abrasion-resistant, and utilizes the plastic as a base material and paper as the filler. Accessories of the pipe are general with that of the existing plastic pipes. The plastic base paper composite pipe is good in practicability if applied to the occasions of construction water usage, farm irrigation, outdoor cable penetration, gas and liquid delivery and the like.

The invention provides a cross-country tractor. The cross-country tractor comprises a front frame, a rear frame, a front axle, a rear axle, front wheels, rear wheels, a traction apparatus, an engine, a speed changing box, a transfer case and a hydraulic steering device, wherein the traction apparatus comprises a traction box, a traction shaft, a traction shaft fixing box, a first traction main pin, a second traction main pin, a wearproof flat gasket, a locking plate and a traction shaft fixing nut; a connector I and a connector II are arranged at the rear end of the traction box; the traction shaft is mounted in the traction shaft fixing box; an upper connecting lug, a lower connecting lug, a left connecting lug and a right connecting lug are arranged at the front end of the traction shaft; the upper connecting lug is connected with the connector I through the first traction main pin; the lower connecting lug is connected with the connector II through the second traction main pin; the first traction main pin and the second traction main pin both are locked by the locking plate; the left connecting lug is connected with the straight pull rod of the hydraulic steering device; the right connecting lug is connected with the steering cylinder of the hydraulic steering device; a drive shaft is mounted in the traction box and the traction shaft. The cross-country tractor is high in carrying capacity, good in stability and high in safety.

The invention relates to a method and a device for treating organic waste. The invention belongs to the technical field of resource comprehensive utilization. Organic waste treatment methods include: (1) collecting kitchen residues and food corners; (2) pressing and dehydrating to a water content of 40-70%; (3) sterilizing and keeping fresh; (4) dehydrating at 3-10 rpm 1. Under the condition of 20-45°C, add microbial strains, ventilate and ferment for 30-50 hours, after 30-40 hours, raise the temperature to 65-70°C, and ferment for 8-15 hours to obtain the product. The screw conveying device, the driving mechanism drives the screw body in the screw conveying cylinder, and the screw cylinder is equipped with a plug-in valve flange support for supporting the screw shaft. The dehydration press device, the driving mechanism drives the helix, the helix is ​​a pitch shrinking helix, and the outside of the helix is ​​a cylindrical structure composed of grid bars. The invention is simple and has high utilization rate; the positioning of the screw shaft is accurate; the dehydration pressing device has a large processing capacity, is convenient to disassemble, and has controllable moisture content.