378 results about "Solid structure" patented technology

A solid structure deformation and damage analysis method based on a quasi-bond finite element method comprises: carrying out geometric modeling on a target structure body, and distribution and subdivision to generate a grid of a traditional finite element method; dividing the target structure body into a finite element region and a quasi-bond region, and calculating a finite element region system stiffness matrix and a quasi-bond region system stiffness matrix to obtain an overall stiffness matrix of the target structure body; setting a boundary condition for the target structure body, applying an external load, and calculating a system force matrix under current load and boundary state; and judging a quasi-bond breakage condition according to a node trial displacement, then calculating a node displacement of the structure body and an equivalent damage parameter at each node, and outputting cloud charts of a displacement field and an equivalent damage field.

The invention relates to a method for predicting the bearing capacity of a concrete-filled steel tube yielding lagging jack, and belongs to the technical field of artificial intelligence and data processing. The method comprises the following steps: acquiring stress data at a key stress position of a concrete filled steel tube arch solid structure; stress data screening is carried out, and a screened data set is stored in an HDF5 hierarchical format; denoising the stored stress data by adopting a self-adaptive normalization method and a wavelet threshold function; time domain-frequency domain feature fusion is carried out on the stress data after denoising normalization through dynamic time segmentation and short-time Fourier transform; constructing a concrete-filled steel tube yielding arch bearing capacity prediction model, inputting the fusion feature vector into the model, and training the model to obtain a trained model; and processing the collected data, inputting the processed data into the trained model to obtain a predicted value of the bearing capacity, and triggering early warning when the predicted value exceeds 90% of the designed bearing capacity for three continuous times. The prediction capability of the model can be improved.

The invention discloses a double-injection rubber-coated product assembled in a super-thick plastic part cavity structure mold and a production process of the double-injection rubber-coated product. A molten plastic material is injected into a first injection mold cavity through a first gun barrel of a double-injection injection molding machine to form a first injection molding part and a second injection molding part which are integrated; then the six-axis robot is controlled to drive the part taking and mounting tool to move to grab the insert and fix the insert to the second injection molding part, and at the moment, a closed assembly part with a cavity structure is formed between the second injection molding part and the insert; finally, a molten plastic material is injected to the outer surface of the assembly part of the second injection mold through a second gun barrel of the double-injection injection molding machine to form a third injection molding part; according to the technology, the overall weight of a solid structure product can be greatly reduced, the material use is reduced, the material cost is reduced, the product cooling time is shortened through the design of the cavity structure, the production efficiency is improved, and the product defects such as surface shrinkage marks and internal irregular cavities caused by excessive shrinkage of a plastic material in the cooling and curing process are thoroughly eradicated.

The present disclosure relates to embodiments of a method for manufacturing a ceramic material comprising the steps of (a) homogenizing aluminum oxide, niobium pentoxide and solvent; (b) ultrasonicating the blend obtained in step (a); (c) adding an aliquot of the prepared suspension to the empty cavity of a mold, particularly between the polymeric mold and the metal mold; (d) immersing the mold into a coolant liquid-containing bath for sufficient time to ensure that all parts are completely frozen; (e) removing the ceramic body from the mold; (f) removing the solidified phase by means of sublimation hence obtaining a green tube; and (g) sintering the green tube, so as to obtain a solid structure. The present disclosure further relates to embodiments of a ceramic material and its use to manufacture a microfiltration membrane and / or a membrane support for fluid separation.

A user support includes a hood structure that is supported by a back frame structure of the user support. The hood structure may comprise a one-piece homogeneous polymer structure that is formed by an additive process. The hood structure may include solid structures and at least one porous lattice matrix that is integrally formed with the solid structures.

The invention discloses a reaction cavity and a multi-stage series micro-channel reactor. The reaction cavity comprises a water-drop-shaped cavity shell and a built-in octopus-like shunting baffle, and a four-section type mixing flow channel is formed between the water-drop-shaped cavity shell and the built-in octopus-like shunting baffle; in the collision shearing section, fluid at a feeding hole impacts the head of the baffle at a high speed to realize forced shunting and primary shearing; according to the deceleration recombination section, a waist expansion flow channel reduces the flow speed and promotes fluid recombination and interface fusion. In the acceleration section, narrow channels between tentacles extrude and accelerate the fluid to enhance permeation and mixing; and in the mixing section, vortex breaking sharp corners are arranged at the tail parts of the baffles to eliminate vortexes and guide the vortexes to a discharge port. The multi-stage reactor is composed of a three-split-flow inlet unit, N reaction cavities connected in series and an outlet unit, and reverse parallel arrangement is achieved through a U-shaped pipe. Except for the reaction cavity, the interior of the reactor is of a solid structure, and the three-flow-dividing inlet adopts the design that a central pipeline is embedded into a peripheral pipeline, so that graded feeding control is realized. The structure has the characteristics of efficient microcosmic forced mixing and low flow resistance.

Methods and apparatuses for utilizing triply periodic minimal surface structures for additive manufacturing of a thermal management system are disclosed, wherein the thermal management system comprises: a solid structure; a triply periodic minimal surface structure within the solid structure, wherein the triply periodic minimal surface structure comprises a first fluid channel and a second fluid channel; a first inlet coupled to the solid structure and configured to pass a first fluid into the first fluid channel; a second inlet coupled to the solid structure and configured to pass a second fluid into the second fluid channel; a first outlet coupled to the solid structure and configured to pass the first fluid out of the first fluid channel; and a second outlet coupled to the solid structure and configured to pass the second fluid out of the second fluid channel. Other embodiments are described and claimed.

The invention discloses a method for preparing an aluminum alloy capillary structure based on a selective laser melting technology, which comprises the following steps of: comprehensively regulating and controlling technological parameters of selective laser melting according to laser energy density by utilizing the forming principle of'incomplete melting pores' and'keyhole pores' in a selective laser melting forming process; and the porosity-adjustable aluminum alloy capillary structure is prepared. The method mainly comprises the following steps that firstly, aluminum alloy spherical powder with the particle size range suitable for the selective laser melting process is selected; secondly, a laser energy density reference value is selected according to the optimal technological parameters of selective laser melting forming of the aluminum alloy solid structure; then, according to the laser energy density, the laser power, the scanning rate, the scanning interval and other technological parameters are comprehensively regulated and controlled, the powder laying layer thickness is set, and the aluminum alloy capillary structure is prepared; and finally, the porosity of the capillary structure is measured, the correlation between the technological parameters and the porosity is established, a technological window is determined, and the aluminum alloy capillary structure with the adjustable porosity is prepared.

The invention discloses a fluid-solid-sound coupling calculation and noise reduction method for a bent pipe, and belongs to the technical field of pipeline testing. According to the method, the three-dimensional physical model of the bent pipe is constructed, the bent pipe fluid-solid coupling model is established, and the dynamic correlation between the flowing characteristics of fluid in the bent pipe and the response of a solid structure is accurately reflected; the method can capture flow field disturbance caused by inertia, centrifugal force and geometric changes of the elbow pipe in the flowing process, quantitatively describes a dynamic load change rule applied by fluid to the pipe wall, effectively improves understanding of complex elbow pipe flow field behaviors, extracts wall surface pressure distribution data, generates fluid disturbance data, and improves the flow field performance of the elbow pipe. According to the method, the distribution characteristics of noise sources generated by flow-induced vibration can be accurately predicted, the problem that a traditional single-field modeling method cannot fully describe actual working conditions is solved on the whole, the physical authenticity and prediction precision of simulation are greatly improved, and the problems of high cost and low efficiency caused by a traditional trial and error method are effectively avoided.

The invention relates to the technical field of aerospace, in particular to a ceramic 3D printing A sandwich structure with a broadband wave-transparent characteristic. According to the ceramic 3D printing A sandwich structure with the broadband wave transmission characteristic, good compatibility of broadband wave transmission, strength-structure accuracy and reliability is achieved, an obvious effect on broadband wave transmission of 1 GHz to 18 GHz is achieved, the dielectric constant and the tangent loss are in a reduction trend under the same frequency band, excellent stability is shown, and the dielectric constant and the tangent loss are reduced under 10 GHz. The dielectric constant of the ceramic 3D printing A sandwich structure with the broadband wave transmission characteristic is reduced by 40% or above compared with that of a full solid structure, the wave transmission rate is increased by 50% or above, the ceramic 3D printing A sandwich structure has excellent electromagnetic performance and mechanical performance, and support is provided for implementation of reliable service application targets such as diversion, heat protection, wave transmission, bearing and rain erosion resistance of hypersonic aircrafts.

The application discloses a heat pipe structure based on metamaterial and a processing method, relates to the technical field of lightweight multifunctional structures, and the heat pipe structure comprises a metal structure, a sealed cavity is arranged in the metal structure, a filling lattice is arranged in the sealed cavity, and an unfilled area is arranged in the middle of the filling lattice; the filling lattice comprises at least two lattice layers with different porosities, and the porosity of the filling lattice decreases from the unfilled area to the edge of the sealed cavity. The integration of the metal solid structure or the honeycomb sandwich structure and the specific heat pipe structure is realized, the number of heat transfer interfaces is greatly reduced, and the heat transfer efficiency is greatly improved.

The present invention discloses a structural crack control measurement device and a measurement method. The device is composed of a first steel pipe and a second steel pipe, both of which are internally provided with vibrating wire strain gauges; elastic linings are arranged in a fitting manner on the inner walls of the first steel pipe and the second steel pipe; the two vibrating wire strain gauges are coaxially arranged with the first steel pipe and the second steel pipe where they are respectively located; the opening directions of the first steel pipe and the second steel pipe point to the principal stress of the concrete; the signal cables of the vibrating wire strain gauges are led out of the cast solid structure; the concrete in the cast solid structure is poured to ensure that the concrete in the first steel pipe and the second steel pipe is filled completely; the data of the two vibrating wire strain gauges during the monitoring and measurement are collected, analyzed and crack controlled in real time. The device provided by the present invention has a simple structure and low cost, truly realizes the stress measurement inside the structure, and the measurement process is easier to implement, strengthens the credibility of the crack measurement data, reduces the error range, and can achieve good prevention and control of cracks caused by temperature stress and the like.

The invention discloses a super-flexible high-strength cable based on a topological optimization structure and a preparation method of the super-flexible high-strength cable. The cable comprises a conductor, an insulating layer, a reinforcing structure layer, a shielding layer and an outer sheath which are sequentially arranged from inside to outside. The conductor adopts a single-strand solid structure or a multi-strand stranded structure; the insulating layer coats the outer side of the conductor through an extrusion process; the reinforced structure layer adopts a topological optimization design and is formed by compounding a high-strength fiber material and a matrix material, and the fiber material is arranged according to the direction and distribution determined by topological optimization; the shielding layer is of a metal woven mesh or metal foil tape wrapping structure; and the outer sheath coats the outer side of the shielding layer. The reinforced structure layer is designed through the topological optimization technology, so that the cable can maintain super flexibility, and meanwhile, the stretching resistance, the bending resistance and the extrusion resistance are remarkably improved, and the problem that the flexibility and the strength of a traditional cable are difficult to consider at the same time is solved.

A user support includes a hood structure that is supported by a back frame structure of the user support. The hood structure may comprise a one-piece homogeneous polymer structure that is formed by an additive process. The hood structure may include solid structures and at least one porous lattice matrix that is integrally formed with the solid structures.

The utility model discloses an anti-misplug power socket, which comprises a mounting rack, a gland arranged in the mounting rack, and a panel arranged on one side of the mounting rack, a conductive piece is arranged in the mounting rack, one side of the conductive piece is provided with a binding post, a safety door is movably arranged between the mounting rack and the gland, a vertical rod is arranged on the safety door, and the vertical rod is provided with an anti-misplug power supply. Through holes are formed in the installation frame and the gland, the vertical rods are installed in the through holes in a sliding mode, a threaded column is integrally formed on the inner side wall of the gland, the outer side of the threaded column is in threaded connection with an adjusting disc, and a limiting groove is formed in the safety door. The safety door is prevented from deflecting in the moving process and being clamped, even if the safety door is clamped, the safety door can be driven to move through the vertical rods, the safety door can move smoothly, the situation that a plug is difficult to insert is avoided, the mounting frame is of a thickened solid structure, and the structural strength of the mounting frame is improved.

The utility model discloses a powder sampler which comprises a hollow pipe and a sampling rod, the hollow pipe comprises two layers, an inner-layer hollow pipe is rotatably connected in an outer-layer hollow pipe, and the sampling rod is rotatably connected in the inner-layer hollow pipe; the sampling rod is of a solid structure, and a plurality of sampling grooves for quantitative sampling are formed in the sampling rod; corresponding outer sampling holes are formed in the positions, at the same height as the sampling groove, of the outer-layer hollow pipe, a plurality of inner sampling holes used for fixed-point sampling are formed in the positions, at the same height as the sampling groove, of the inner-layer hollow pipe, and the inner sampling holes are spirally formed in the axial direction of the inner-layer hollow pipe. The sampling rod is of a solid structure and is provided with sampling grooves at intervals, so that quantitative sampling at different positions is realized; the inner sampling holes axially formed in the inner hollow layer at intervals are matched with the sampling grooves, so that quantitative sampling at a specific position is realized; the sampler is made of rubber, so that samples are prevented from being polluted due to long-term abrasion; the tip and the thread of the outer hollow pipe are beneficial for the sampler to go deep into a sample.

The invention discloses a supercavitation navigation body cross-medium static stability margin integrated evaluation method, which comprises the following steps: (1) establishing a fluid domain and solid domain model, dividing grids, requiring good matching of a solid wall surface in contact with a fluid, setting initial and boundary conditions of the fluid domain, setting material attributes of a solid structure and endowing the solid structure with an initial working condition; (2) monitoring a pitching moment and a pitching force value in the air, calculating an aerodynamic center of the supercavitation navigation body in the air, and obtaining a static stability margin of the supercavitation navigation body in a flight state; (3) according to an empirical cavitation contour formula and the underwater characteristics of the supercavitation navigation body, the wetting volume and the equivalent buoyancy center position of the navigation body are obtained, and the static stability margin after complete development of the cavitation in water is calculated; and (4) carrying out weighted average by integrating the air static stability margin and the underwater static stability margin so as to obtain the static stability margin for judging the super-cavitation navigation body in the cross-medium water entry process. And help can be provided for judging the static stability of the navigation map entering water.

The utility model relates to a fermentation box based on food baking, which comprises a double-door box body, the middle part in the box body is equally divided into two separation cavities by a separation plate matched with the middle part, two groups of clamping strip plates are horizontally and symmetrically arranged in the separation cavities up and down respectively, and tray racks are clamped in the two separation cavities along the clamping strip plates; the tray rack is formed by butting two single racks at intervals; each single frame comprises a main frame of a rectangular three-dimensional structure, and a plurality of layered frames of a structure shaped like a Chinese character'mu 'are horizontally and fixedly connected into the main frame at equal intervals in the long edge direction of the main frame. The main frames of the two single body frames are fixedly connected through an upper fixing plate and a lower fixing plate which are located on the same side face, and an empty groove which can be matched with the partition plate in a clamped mode is formed between the two main frames. According to the tray rack in the fermentation box, an operator can take out or put the whole tray rack from or into the box body at a time, so that the operation process is greatly simplified, and the working efficiency is improved.

The invention discloses a method for detecting concrete strength by using a combined core sample beam. The method comprises the following steps: step S1, selecting concrete members and uniformly arranging the positions of the concrete members; s2, scanning the positions of stressed steel bars in the concrete member by using a steel bar scanner, and marking; s3, drilling a core sample of the concrete member needing to be detected through a core drilling instrument to obtain the core sample; step S4, carrying out polishing treatment on the core sample; s5, loading the polished core sample into a shaping steel sleeve to obtain the compressive strength of the core sample; and S6, obtaining the real strength of the entity structure through comprehensive evaluation. The method for detecting the concrete strength through the combined core sample bundle is simple and easy to implement, low in cost and small in difficulty, the damage to an original structure is small when a single core sample with the diameter of 20 mm is drilled, steel bars can be avoided more easily, stress main bars are prevented from being damaged, and due to the fact that the core samples are small in size, the application range of a core drilling method is expanded.

The utility model discloses a kind of stainless steel bar for facilitating stable transmission, including stainless steel rod body structure, stainless steel rod body structure is set in through crossbar and side rod combination, crossbar, side rod integrated molding, crossbar is cylindrical solid structure, side rod is hollow pipe body structure;Guide structure is used for the transmission guide of stainless steel rod body structure, and the first groove seat, second groove seat in guide structure are adaptively set with side rod, the guide structure includes limit block, support roller and mounting plate block, limit block is fixedly connected on mounting plate block, support roller is positioned on limit block, the side end of mounting plate block is fixedly connected with first groove seat and second groove seat, first groove seat, second groove seat are fixedly connected.The utility model is a kind of stainless steel bar for facilitating stable transmission, by the setting of structure, the purpose of stable transmission is realized.

The utility model discloses a negative pressure dedusting roller screen which comprises a feeding cyclone, a dedusting roller screen and a main auger, one side, close to the feeding cyclone, of the main auger is of a solid structure, and the other part of the main auger is of a hollow structure. The centrifugal fan is connected with the dust receiving lower plate, the auxiliary packing auger is rotatably installed in the dust receiving lower plate, and the dust removal roller screen and the main packing auger are opposite in rotation direction. The dust removal device relates to the technical field of roller screens, negative pressure is formed on the surface of the dust removal roller screen through the centrifugal fan, dust can be rapidly sucked away, the dust removal efficiency is greatly improved, and the dust removal efficiency is improved. The soil content in the straw is effectively reduced, the requirement of forage grass production on the straw quality is met, and the health of livestock is guaranteed; the rotating direction of the dust removal roller screen is opposite to that of the main auger, the problem that screen meshes are blocked by straw is avoided, meanwhile, the area of the straw passing through the roller screen is increased, the defects caused by size limitation of the roller screen are overcome, and the working efficiency of equipment is improved.

The invention relates to the technical field of kitchen equipment, in particular to convenient-to-use cooking equipment for frying and baking, which comprises a machine body and a heating device positioned in the machine body and used for frying and baking food, and the top of the machine body is provided with a concave shaping cavity and a profiling assembly matched with the shaping cavity to shape tinfoil; the cutting piece is arranged between the shaping cavity and the profiling assembly, the tinfoil is placed in the shaping cavity, the profiling assembly is placed on the tinfoil, the shaping cavity and the profiling assembly are matched to press and mold the tinfoil, and meanwhile the cutting piece cuts off the tinfoil. Through cooperation of the shaping cavity and the profiling assembly, the placed tinfoil can be pressed into preset shapes such as a tray with a vertical edge and a bowl, the generated tinfoil container is standard in shape and firm in structure, no additional treatment is needed, the tedious and unreliable manual folding and shaping process is completely omitted, and the preparation time before cooking is greatly shortened.

The application provides a new type of pin shaft, which comprises a hollow shaft and a core shaft embedded in the hollow shaft. The application is obtained by analyzing the working condition of the pin shaft, comprehensively considering the material selection, structure design, heat treatment process and machining process, and selecting 30CrMnSiA high-strength alloy structural steel to redesign the structure. The original Φ380 integral solid structure is optimized into a combined structure, the hollow shaft is installed with the core shaft, the structure of the core shaft is optimized and the machining process is optimized, different heat treatment processes are adopted for the hollow shaft and the core shaft, the two are cold assembled after machining, the interference fit is realized at room temperature, the mechanical properties of the assembled pin shaft are ensured, the problem that the mechanical properties of the material core cannot be reached is effectively avoided, the overall mechanical properties of the combined pin shaft are greatly improved, the strength and toughness of the material are combined, and the fracture toughness and fatigue strength are obviously improved.

The application relates to the field of sanitary products, and provides a high-absorptive wet water-absorption paper and a preparation method thereof, which solves the defects of limited water absorption, non-solid structure and slow liquid diffusion speed of the water-absorption paper obtained by using the existing preparation method of the prior art. The high-absorptive wet water-absorption paper comprises, from top to bottom, a first wet paper layer, a first SAP high-molecular layer, a second wet paper layer, a second SAP high-molecular layer and a dry paper layer which are arranged in a stacking mode, the first wet paper layer and the second wet paper layer both have high loftiness, the loftiness is 5-20 cm 3 / g.

The utility model relates to a reinforced concrete solid and hollow integrated pile which comprises a hollow pile body and inner reinforcement cages arranged at the two ends of the hollow pile body. The hollow pile body is of a hollow cuboid or cylinder structure and is a prefabricated part. The inner reinforcement cage is connected with an inner cavity of the hollow pile body in a clamped mode and comprises a supporting plate, reinforcing steel bars and stirrups, the reinforcing steel bars extend in the axial direction of the hollow pile body and are annularly distributed, the stirrups are spirally wound and welded to the outer sides of the reinforcing steel bars, one ends of the reinforcing steel bars are welded to the supporting plate, and the other ends of the reinforcing steel bars are connected with sleeves. The inner reinforcement cage is filled with concrete; the two ends of the hollow pile body are sealed to form a solid pile. The inner reinforcement cage is arranged in the hollow pile body, the supporting plate and the inner cavity of the hollow pile body form a barrier, and the concrete is injected into the inner reinforcement cage to form a solid structure with two sealed ends, so that the use amount of the concrete is reduced, water and corrosive substances can be prevented from entering the pile, and the service life of the pile is prolonged.

The invention discloses an under-pressure grouting prestressed hollow anchor rod and a mounting method thereof. The under-pressure grouting prestressed hollow anchor rod comprises a hollow rod body, a stirring cutter arranged at the front end of the hollow rod body, and a stop-grouting plug, a base plate, a spherical washer and a nut which are sequentially arranged at the tail part of the hollow rod body, a conical sealing belt is arranged on the grout stopping plug, and a supporting ring is arranged at the large end of the conical sealing belt. Compared with the prior art, the grouting stopping plug has the advantages that the grouting stopping plug of a brand new structure can be installed in anchor holes of different sizes, the installation resistance of the grouting stopping plug is small, the return resistance of the grouting stopping plug is large, and the grouting stopping effect is guaranteed; the whole stop-grouting plug is of a solid structure, interference sealing is formed between the stop-grouting plug and a rod body and an anchor hole during installation, pressurization is achieved, and the grouting compactness is guaranteed. The stirring cutter with a brand-new structure not only ensures sufficient stirring of an anchoring agent, but also can prevent the anchoring agent from flowing back into the rod body.

The invention discloses a device and method for testing flexural strength and compressive strength of structural solid concrete.The testing device comprises a thrust rod, thrust teeth, a counter-force ring, a hollow jack and a cylindrical force sensor, one end of the thrust rod horizontally penetrates through the side wall of the counter-force ring, and the other end of the thrust rod penetrates through the hollow jack; the thrust teeth are fixed to the thrust rod and located in the counter-force ring. The device further comprises a barrel type force sensor which is arranged on the thrust rod in a sleeving mode and abuts against the outer side of the hollow jack so as to assist in measuring the strength of the concrete entity. According to the device and the method for testing the breaking strength and the compressive strength of the structural solid concrete, the structure is reasonable, the breaking strength and the compressive strength can be tested at one time, and the device and the method have the advantage of high testing efficiency; meanwhile, the test belongs to a micro-damage test, the damage to the concrete is very small in the test process, and the safe use of the solid structure is not influenced after the test surface is repaired.

The present invention relates to the technical field of medical orthopedic bionic materials, specifically a printed metal and polyethylene integrated knee joint prosthesis and a preparation method. Any one of tantalum, titanium, titanium alloy, zirconium-niobium alloy, and cobalt-chromium alloy is used to print a 3D printed metal component. The 3D printed metal component is integrally formed by 3D printing, and from top to bottom, there are a porous structure 1, a solid structure, and a porous structure 2. The porous structure 2 is combined with the polyethylene component by injection molding or hot pressing. The middle is the solid structure, and the bottom layer is the porous structure 2. The porous structure 2 is combined with the polyethylene. The polymer polyethylene material is ball milled to make the solid powder of the polymer polyethylene after molding more evenly distributed and the gap smaller, thereby improving the mechanical properties and internal wear properties of the material, and avoiding adverse events such as ion poisoning caused by metal wear debris.

The invention aims to provide a wax mold shell manufacturing process which comprises the following steps: manufacturing a wax tree, manufacturing a surface layer, manufacturing a transition layer, filling, manufacturing a reinforcing layer, manufacturing a slurry sealing layer and melting wax, in the filling process, the part of a deep through hole is filled with a filling material and then is blocked by a blocking material, and the filling material is filled with a filling material; the wax mold shell is provided with the deep through hole, so that the wax mold shell forms a solid structure at the position where the deep through hole is located, the structural strength of the position is effectively enhanced, and when molten metal is subsequently injected into the wax mold shell, the molten metal can be effectively prevented from jumping to the structure at the position where the deep through hole is located, so that the forming quality of a casting can be improved, and the problems of sand washing, sand burning and the like of the casting are avoided.

The utility model provides a fork arm device for fixing an antenna forecabin, which comprises two sets of clamping and supporting mechanisms, each set of clamping and supporting mechanism comprises a rotary table connecting plate for supporting a rotary table and a supporting claw fixed with the rotary table connecting plate, and the supporting claw comprises an upper clamping arm and a lower clamping arm which are arranged up and down and are respectively used for fixing the top and the bottom of the antenna forecabin. And the antenna front cabin is clamped between the upper clamping arm and the lower clamping arm. Due to the structural design of the supporting claws, the bending resistance of the whole clamping and supporting mechanism is improved, a key stress area is of a solid structure, a non-stress key area is of a hollowed-out design, the structural reliability of the clamping and supporting mechanism in long-term use is guaranteed, and the design requirement for light weight is met. The clamping table and the clamping groove are matched and positioned, so that the connection stability of the antenna front cabin and the rotary table is ensured, the vibration displacement in a working state is effectively inhibited, and the antenna pointing precision is improved.