46results about How to "Uniform load distribution" patented technology

The invention provides a cam, a wave generator and a harmonic reducer, the cam comprises a cam body, grooves are formed in the circumferential side face of the cam body, and the grooves are continuously or intermittently distributed in the circumferential direction of the cam body; the length of the cam body in the axial direction is H, the width W of any groove in the axial direction of the cam body meets the condition that W / H is larger than or equal to 0.15 and smaller than or equal to 0.3, and after the cam is matched with the flexible bearing, buffer spaces capable of providing elastic deformation and absorbing vibration are formed in the grooves. According to the harmonic reducer, the cam with the groove and the width meeting the design range is designed and constructed in the peripheral side face, the balance weight of the cam is reduced, the contact area between the cam and the flexible bearing is reduced, in the operation process of the harmonic reducer, a buffer space for providing elastic deformation and absorbing vibration can be formed in the groove with a certain span in the axial direction, and the service life of the harmonic reducer is prolonged. Load distribution of the harmonic reducer in the operation process is more uniform, and high-speed, low-noise and small-vibration operation of the harmonic reducer is facilitated.

The invention discloses vacuum brazing equipment and method for a plate-fin heat exchanger, relates to the field of welding, and aims to solve the problems of low heating efficiency and difficulty in deformation control caused by structural characteristics of the plate-fin heat exchanger and characteristics of vacuum radiation heating at present. Structures such as a hydraulic control system, an upper water-cooling sealing conductive pressure head, a lower conductive base and a tool are added on the basis of traditional vacuum brazing equipment, the structures are compounded with a furnace pipe, an upper electrode of the upper water-cooling sealing conductive pressure head is of a distributed structure and can move up and down through the hydraulic control system, and the upper electrode of the lower water-cooling sealing conductive pressure head can move up and down through the tool. And by matching with a tool, a workpiece can be always stressed uniformly, and continuous and stable self-resistance extremely-fast heat generation electrifying can be ensured. Double-feedback series control is adopted to achieve double-heat-source heating, the heating process time is shortened, a pressure-temperature coupling control method is adopted, it is ensured that stress is uniform, deformation is reduced, and the heating efficiency and the welding quality consistency are improved. And rapid and uniform heating and small deformation control of the workpiece can be realized.

The invention provides a cam, a wave generator and a harmonic reducer, the cam comprises a cam body, a material reduction area is arranged on the peripheral side face of the cam body, the material reduction area comprises a wavy surface section, and in the section where the axis of the cam body is located, the wavy surface section is in a wavy line shape extending in the axial direction of the cam body; the subtractive areas are continuously or discontinuously distributed in the circumferential direction of the cam body, and after the cam is matched with the flexible bearing, buffer spaces capable of providing elastic deformation and absorbing vibration are formed in the subtractive areas. According to the arrangement, the cam of the wave surface section is designed and constructed in the material reduction area, the self balance weight is reduced, the contact area between the cam and the flexible bearing is reduced, the cam has better structural mechanical performance, in the operation process of the harmonic reducer, a buffer space for providing elastic deformation and absorbing vibration is formed in the material reduction area, and the vibration reduction effect is improved. Load distribution of the harmonic reducer in the operation process is more uniform, and high-speed, low-noise and small-vibration operation of the harmonic reducer is facilitated.

The invention provides a Kevlar nanofiber composite membrane and a preparation method thereof, and relates to the field of nanofiber composite membrane preparation. The method comprises the following steps: respectively preparing a Kevlar nanofiber dispersion liquid and PVA-co-PE nanofibers, diluting the Kevlar nanofiber dispersion liquid to obtain a Kevlar nanofiber hydrogel, mixing the Kevlar nanofiber hydrogel with the PVA-co-PE nanofibers, adding a mixed solution of water and isopropanol and a cross-linking agent, and carrying out stirring, cross-linking, suction filtration and hot pressing to obtain the Kevlar nanofiber composite membrane. The cross section of the composite film is of a compactly stacked layered embedded structure, so that the composite film has excellent mechanical strength and durability, can effectively resist external stress, and avoids mechanical damage. In addition, due to the layered structure, the composite film has good machinability, processing operations such as cutting, coating and stacking can be conveniently carried out in practical application, and various industrial and engineering application requirements can be met. The preparation method provided by the invention is simple and convenient to operate, economical and efficient, has high reproducibility and is easy to realize industrialization.

The invention relates to the technical field of lubrication of gearboxes of wind generating sets, in particular to lubricating oil for a yaw variable-pitch speed reducer of a wind generating set and a preparation method of the lubricating oil. The lubricating oil is prepared from 49 to 53 parts of metallocene poly-alpha olefin, 23 to 28 parts of functional fluid containing a low-viscosity and low-volatility poly-alpha olefin base material, 15 to 20 parts of alkyl naphthalene, 2.5 to 3.0 parts of a composite additive bag, 2 to 5 parts of an oiliness agent, 0.005 to 0.01 part of a demulsifying agent, 0.02 to 0.03 part of a de-foaming agent and 0.005 to 0.01 part of a pour point depressant. The lubricating oil for the yaw variable-pitch speed reducer of the wind generating set has excellent high and low temperature performance, oxidation resistance, additive sensitivity and foam stability; in addition, the transmission energy efficiency is higher, and the excellent energy-saving effect is achieved.

The invention relates to a rolling bearing assembly (1), comprising a bearing ring (2) which is surrounded by a bearing block geometry (3), the bearing block geometry (3) being partially unloaded in the region having a higher radial component stiffness (4) and / or a higher local load introduction. According to the invention, at least one partial radial relief is formed in the bearing block geometry (3) in the region having a high radial component stiffness (4).

This utility model relates to the field of materials processing technology, and in particular to a high-strength, high-precision, low-density composite profile with an arc surface; it includes a hollow profile structure and a solid profile structure, which are bonded together by a mortise and tenon structure to form an alternating continuous profile structure; the hollow profile structure has an extruded arc-shaped hollow outer wall, filled with glass microspheres, and mortise and tenon grooves and overlapping surfaces at both ends; the solid profile structure has an arc-shaped solid body, with mortise and tenon blocks and overlapping grooves at the ends that match the trapezoidal mortise and tenon grooves. This composite profile, through the alternating splicing design of the hollow and solid profile structures combined with the trapezoidal interlocking structure of the mortise and tenon grooves and blocks, significantly improves the connection reliability and assembly efficiency.

The jetty type wharf protection slope comprises a protection slope body arranged on one side of a wharf, the protection slope body is connected with the wharf through a plurality of reinforcing assemblies, each reinforcing assembly comprises two right-angle plates which are oppositely arranged, and the two right-angle plates are connected with the wharf and the protection slope body through pile foundations respectively. A cavity for containing dredged soil is formed between the two right-angle plates. The wharf slope protection structure is reasonable in structure, dredged soil can be reutilized, meanwhile, the structural strength of the wharf slope protection is guaranteed, and good economic benefits are achieved.

The invention discloses a high-stability static pressure guide rail device for heavy equipment, and relates to the technical field of precision mechanical guide rails, the bottom surface of a movable sliding table is fixedly connected with a pull-down constraint support, a plane static pressure oil cavity group is located on the bottom surface of the pull-down constraint support, and the bottom end of a plane oil supply channel extends into the plane static pressure oil cavity group; and the V-shaped sliding rails are fixedly connected to the two sides of the bottom face of the movable sliding table, the V-shaped static pressure oil cavity sets are located on the side faces of the bottoms of the V-shaped sliding rails, and the bottom ends of the V-shaped oil supply channels extend into the V-shaped static pressure oil cavity sets. The comprehensive bearing capacity of the guide rail is remarkably improved, the large-load requirement of heavy equipment is met, the central plane supporting area provides main vertical bearing capacity, the double-V-shaped guide rail provides multidirectional constraint and auxiliary bearing, and the lateral constraint structure provides static pressure support in the horizontal direction.

The utility model discloses a kind of beams of gantry milling, including beam, the beam has hollow cavity, the inner wall of the beam is fixedly connected with multiple annular reinforcing plates at equal intervals, the inner wall of the beam is fixedly connected with multiple reinforcing plates, each the reinforcing plate is fixedly connected with each annular reinforcing plate, the inner wall of the beam is fixedly connected with multiple reinforcing pieces, each the reinforcing piece is fixedly connected with annular reinforcing plate, the bottom of the beam is fixedly connected with two mounting blocks, the bottom of the beam is equipped with two vertical beams, assembly mechanism is equipped between the beam and vertical beam. The utility model is by being provided with equal interval annular reinforcing plate in the beam hollow inner wall, cooperate with the reinforcing plate fixedly connected with it, form support structure, effectively enhance the torsional stiffness and bending strength of beam;Reinforcing piece and annular reinforcing plate fixedly connected that the beam inner wall is provided with, can effectively disperse stress concentration, prolong equipment service life.

The present invention relates to the technical field of lubrication of wind turbine gearboxes, and in particular to a lubricating oil for a yaw-pitch speed reducer of a wind turbine and a preparation method thereof. The lubricating oil comprises, by weight, 49-53 parts of metallocene polyalphaolefin, 23-28 parts of a functional fluid containing a low-viscosity and low-volatility polyalphaolefin base material, 15-20 parts of alkyl naphthalene, 2.5-3.0 parts of a composite additive package, 2-5 parts of an oiliness agent, 0.005-0.01 parts of a demulsifier, 0.02-0.03 parts of a defoamer, and 0.005-0.01 parts of a pour point depressant. The lubricating oil for a yaw-pitch speed reducer of a wind turbine according to the present invention has excellent high and low temperature performance, antioxidant performance, additive sensitivity, and foam stability; and the transmission energy efficiency is higher, and has an excellent energy-saving effect.

The utility model belongs to the technical field of cutter disassembly and assembly, and particularly relates to a cutter locking structure which comprises a cutter and a cutter handle, and a cam tensioning mechanism is arranged between the cutter and the cutter handle. The cam tensioning mechanism comprises a lock shaft and an eccentric wheel installed on the lock shaft, an axial tensioning piece is arranged between the cutter and the cutter handle, the axial tensioning piece is movably assembled in the cutter handle, one end of the axial tensioning piece is in threaded connection with the cutter, and a tensioning hole is formed in the axial tensioning piece; or a tensioning hole is formed in the short taper shank of the cutter; the axis of the tensioning hole coincides with the central axis of the cutter handle and is perpendicular to the axis of the lock shaft. The lock shaft can rotate relative to the cutter handle, penetrates into the cutter handle and is connected with the tensioning hole in an inserted mode so that the eccentric wheel can be located in the tensioning hole, the eccentric outer side of the eccentric wheel makes contact with the hole wall of the tensioning hole, and the eccentric wheel drives the cutter to move in the axial direction of the eccentric wheel under rotation of the lock shaft so as to tension the cutter. And a locking structure is arranged between the lock shaft and the knife handle. The tool can be prevented from loosening and rotating relative to the tool handle, machining precision is guaranteed, machining efficiency is improved, and machining cost is saved.

The invention discloses a fixing device for a concrete slab explosion test, which comprises a fixing seat, and the fixing seat comprises a first supporting unit and a second supporting unit which are detachably arranged; first clamping assemblies are arranged at the top ends of the first supporting unit and the second supporting unit; the fixing base is further provided with a monitoring unit and a blasting assembly fixing unit. The free end of the blasting assembly fixing unit can be close to or away from the fixing base, the second clamping unit comprises a first clamping assembly and a second clamping assembly which are detachable, and the second clamping assembly can move in the vertical direction of the first clamping assembly; the device can effectively simulate the real clamping and stress conditions of the two ends of a concrete slab in a building under the action of an explosion load, greatly improves the accuracy of an anti-explosion performance loading test of the concrete slab with the two ends clamped and supported, meets the test of different to-be-tested assemblies at the same time, and improves the test efficiency. The test efficiency is improved and the cost is reduced.

The application relates to the technical field of bridge construction, and particularly discloses a rotating system of a high and large rotating bridge, which comprises a lower bearing platform, a spherical hinge assembly, an upper rotating disc, a traction assembly and a slide way. The lower bearing platform is made of concrete pouring, the spherical hinge assembly is arranged between the lower bearing platform and the upper rotating disc, the upper rotating disc is poured on the spherical hinge assembly, the traction assembly is used for driving the upper rotating disc to rotate, the slide way is horizontally arranged on the lower bearing platform and is coincident with the center of the spherical hinge assembly, eight supporting legs are arranged below the upper rotating disc, the supporting legs are located above the slide way and have a gap between the slide way, a rotating platform is formed by the spherical hinge, the supporting legs and the part connected with the upper rotating disc, the rotating platform is cylindrical, the upper rotating disc is regular octagonal, the formwork is more convenient to configure and has high utilization on the basis of guaranteeing balanced stress, the lower bearing platform is hexagonal, local stress concentration can be reduced, load distribution is uniform, and the formwork cost and difficulty can be reduced, so that effective support is provided for the rotating system and the bridge.

The application relates to a realization method of a large-size anti-broken-edge tap, which solves the broken-edge problems of the tap during the tap feeding and retreating by respectively obtaining the best point of a shoveling bit through a main cutting edge load uniform distribution strategy and obtaining the best chamfer angle through a terminal complete tooth chamfer strategy to optimize the anti-broken-edge structure of the tap. The application makes the load on the cutting tooth uniformly distributed, reduces the stress borne by the tap, reduces the friction between the complete tooth and the machined thread, provides more space for the blocked chip to discharge, reduces the reverse torque borne by the tap during the retreating, and finally reduces the broken-edge problem of the tap.

The utility model provides a kind of bolt mounting structure and vehicle bogie, it is related to railway vehicle technical field, bolt mounting structure is applied to vehicle bogie, and vehicle bogie includes framework and drive system;Bolt mounting structure includes connecting flange, multiple mounting seat, mounting nut and bolt rod;Connecting flange is located between framework and drive system;Multiple mounting seat is located in the cavity of framework, and mounting nut is located on multiple mounting seat;Bolt rod is through the outer wall of framework, connecting flange and drive system, and one end is matched with mounting nut, and the other end extends to the mounting hole outside drive system shell. Through external bolt rod and built-in linkage type mounting seat cooperation, fastening operation is completed completely in external space. Realize the convenient installation and visual maintenance of bogie framework and drive system. Operating personnel can complete bolt fastening operation without entering cavity, significantly reduce installation difficulty and time cost.

This invention relates to the field of bridge construction technology, and particularly to a steel-concrete composite beam support and its preloading construction method. The steel-concrete composite beam support includes two rows of separate side supports, which are used to symmetrically support the bottom of the side boxes on both sides of the main steel beam. Multiple rows of steel pipe columns are arranged at intervals, and each row of steel pipe columns includes multiple steel pipe columns. Adjacent steel pipe columns are connected by diagonal bracing groove steel frames. A transverse distribution beam is fixed at the top of the multiple rows of steel pipe columns, and a Bailey beam is fixed on the transverse distribution beam. A track distribution beam is set on the top of the Bailey beam, and a sliding track is set on the track distribution beam. A transport trolley slides on the sliding track. The sliding track and transport trolley realize dynamic segmented preloading, ensuring that the settlement data accurately reflects the performance of the support. The modular structure facilitates rapid assembly and shortens the construction period. The symmetrical arrangement of the separate side supports avoids load concentration in the middle, reduces local stress concentration, and results in a more uniform load distribution, making it suitable for the construction of long-span bridges.

The invention provides a cam, a wave generator and a harmonic reducer. The cam comprises a cam body, and hole areas which are symmetrically distributed are arranged on the two sides of the center of the cam body in the long axis direction of the cam body; a plurality of through holes are formed in each hole area of the cam body, and the through holes are through in the axial direction of the cam body; after the cam is matched with the flexible bearing, a buffer space capable of providing elastic deformation and absorbing vibration is formed in the through hole. According to the arrangement, the cam with the through hole is designed and constructed in the position, so that not only is the self weight reduced, but also the structural strength and the structural mechanical property of the cam body can be ensured due to the fact that local materials on a long shaft with a longer size are lost; a buffer space for providing elastic deformation and absorbing vibration can be formed in the through hole with a certain span in the radial direction, and the problem of how to optimize the structure of the harmonic reducer in the prior art so as to improve the performance in the aspects of light weight, high speed, low noise and small vibration is solved.

The utility model discloses a kind of composite material compression test fixtures of synchronous pressure application, including chassis and clamping block;Chassis includes bottom plate that can be installed on test table and the back plate and two side plates connected with bottom plate;Two pairs of clamping block are symmetrically arranged, and each pair of clamping block is symmetrically arranged;The upper and lower clamping block of one side is slidably installed on the same movable plate by first vertical guide structure, movable plate side portion is slidably installed on back plate by horizontal guide structure, movable plate is installed with clamping power component in the side away from clamping block, clamping power component is towards one side side plate, clamping power component is used to resist on side plate and promote the clamping of clamping block in the side;The upper and lower clamping block of the other side is slidably installed on the same fixed plate by second vertical guide structure, and fixed plate is installed on the other side plate;Clamping block is close to the end of effective test area and is equipped with extension and arc chamfer.This fixture can slow down the stress concentration of clamping block end in sample effective test area, and left and right clamping block load distribution is uniform.

The invention discloses an arched steel structure fabricated retaining wall of a mobile crushing station, and belongs to the technical field of mine crushing stations. Comprising a foundation and a retaining wall frame which is inserted into the foundation and formed by E-shaped steel columns, H-shaped steel columns and cross-shaped steel columns, arched corrugated steel plates are connected to the frame to form a retaining wall body, and the arched corrugated steel plates have good circumferential rigidity, axial flexibility, deformation resistance and foundation adaptability and can meet the special requirements of unfavorable geology. Factory processing and on-site assembly are separately implemented, so that the construction period is greatly shortened; the construction is not influenced by temperature and environment, and the construction period is prolonged; large mechanical equipment is not needed for transportation and on-site splicing construction, only manual operation is needed for most splicing, construction is convenient and fast, operation is easy, and cost reduction and quality control are facilitated; the position of the fabricated retaining wall can be adjusted at any time along with movement of the working face of the crushing station, and the full-life-cycle investment cost of the crushing station is reduced.

The utility model relates to the technical field of filtering equipment, in particular to a filter element framework and a filter element, which comprise a frame body in a spiral structure, the section of the frame body is in an S-shaped structure, and the section of the frame body comprises a first fixing part, a first bending part, a second fixing part, a second bending part and a third fixing part which are connected in sequence, and the first fixing part, the second fixing part and the third fixing part are arranged in parallel. According to the utility model, the spiral frame body and the spiral filter membrane jointly form the tube body of the tubular filter element, so that the load can be uniformly distributed, the stress concentration degree of the structure is reduced, and the structural strength and the bearing capacity of the formed tubular filter element are effectively improved; besides, as the tube wall of the tubular filter element is composed of the filter membrane and the frame body simultaneously, compared with a built-in support body, the thickness of the tube wall in the radial direction of the tube body of the tubular filter element is effectively reduced, the consumption ratio of the support body is effectively reduced, and the production cost is further reduced.

The utility model discloses an axial positioning structure of a floating sun gear, which comprises a transmission shaft, the outer side wall of the transmission shaft is fixedly connected with a limiting pin in the middle, the transmission shaft is slidably connected with a sun gear main body through the limiting pin, and the upper side wall and the lower side wall of the sun gear main body are both rotatably connected with supporting plates. A plurality of limiting rods are fixedly connected to the side wall, away from the sun gear body, of the supporting plate. A reset spring is arranged on the outer side wall of each limiting rod, a locking check block is slidably connected to the side, away from the sun gear body, of each limiting rod, and limiting taper sleeves are installed at the upper end and the lower end of the transmission shaft correspondingly. According to the sun gear assembly, the two supporting plates can position the sun gear body in the axial direction, the locking check blocks can limit the sliding range of the supporting plates, the impact resistance of a system can be effectively improved through combination of the two supporting plates and the locking check blocks, load distribution is more uniform, and vibration and noise of the system are reduced.

The utility model relates to a pedal stool which is characterized in that the pedal stool comprises side plates on two sides and a pedal assembly arranged between the two side plates, the pedal assembly comprises more than one horizontally arranged bottom pedal and a top pedal, two sides of the bottom pedal are respectively and detachably connected with the side plates, and the top pedal is connected with the side plates. And the top pedal is rotationally arranged between the two side plates. By the adoption of the technical scheme, a modular combined framework is adopted, the height expandability is achieved through the multiple stages of detachable pedals, assembling is easy and convenient, and the modular production cost is low; due to the structure formed by the side plates and the pedal, loads are uniformly distributed, the stability is high, and the use safety of children is met; by rotating the top pedal, the top pedal can be used as a backrest, the bottom pedal can be used as a stool surface, children can conveniently use the chair as an arm chair, and the chair is high in functionality, easy to operate, convenient to convert and high in practicability.

The application relates to the technical field of unmanned aerial vehicle fluid spraying, and discloses a single-motor-driven fluid spraying device, which comprises a speed reduction motor, a long light shaft, a driving bevel gear and two short parallel light shafts.The single-motor-driven fluid spraying device can efficiently decompose single-axis rotating power into two routes of vertical rotating power through the cooperation between the components, and the two short light shafts automatically obtain opposite rotating directions.This transmission mode omits the complex worm gear or multi-stage gear reversing mechanism in the traditional scheme, greatly simplifies the transmission chain, effectively improves the power transmission efficiency, significantly reduces the overall volume and weight of the device, reduces the noise and vibration in the transmission process, and enables the device to better adapt to the compact and light mounting requirements of the unmanned aerial vehicle.

The invention relates to the field of mechanical engineering. The V-shaped spring comprises a first end plate, a second end and at least one middle plate, wherein the first end plate and the second end plate are arranged in parallel and bent in a V shape, and the middle plate is arranged between the first end plate and the second end plate. And an elastic material layer is arranged between each pair of adjacent plates. The width L1 of the first end plate is larger than the width L2 of the second end plate, the thickness of the first end plate is equal to the thickness of the second end plate and larger than the thickness of the at least one middle plate, and the width of the at least one middle plate is between the value L1 and the value L2. An opening is provided in each layer of elastomeric material in a bending region of an adjacent plate, the axis of the opening being substantially parallel to the plate. And the width of the opening is gradually reduced from the elastic material layer close to the first end plate to the elastic material layer close to the second end plate. The working reliability of the V-shaped spring can be improved.

The invention provides a variable damping ball screw inerter shock absorber and method, the variable damping ball screw inerter shock absorber comprises an axial compression structure, a converter is arranged in the middle of the axial compression structure in a sliding and penetrating mode, and the converter reciprocates in the axial compression structure in the axial direction through a spring in the axial direction; the converter comprises a supporting cavity structure, an angular contact ball bearing is fixedly arranged in the middle of the supporting cavity structure, a ball screw is coaxially arranged on the angular contact ball bearing in a penetrating mode, the upper section of the ball screw and the angular contact ball bearing are sleeved in a sliding mode, and the lower section of the ball screw is meshed with the axial compression structure in a threaded mode. The bottom end of the ball screw is fixedly connected with an energy consumption flywheel; the technical problem that in the prior art, pipeline vibration cannot be effectively solved is solved.

The present application belongs to the technical field of planetary gear transmission mechanism parts, and particularly relates to a planetary gear carrier, which comprises a front planetary carrier body and a rear planetary carrier body arranged in two parts, and a connecting column is arranged on the front planetary carrier body, the coaxial bidirectional transmission structure effectively increases the meshing length and the bearing area, the load is uniformly distributed, and the transmission stiffness and stability are significantly improved; the radial inner and outer double-side island-shaped reinforcing structure is adopted on the two sides of the groove in the circumferential direction, the stress concentration area is precisely reinforced, and the connection strength and the fatigue resistance of the brazing position are greatly improved; the through dynamic balance hole group realizes overall double-face dynamic balance, overcomes the technical prejudice in the industry that low speed does not need dynamic balance, and obviously reduces the vibration, noise and gear impact; the flow guide structure and the labyrinth type fitting structure improve the flow and filling effect of the brazing filler metal, and improve the uniformity and reliability of the weld; the heat dissipation gap improves the heat dissipation capacity, reduces the structural stress under high temperature working conditions, and prolongs the overall service life.

The invention provides a cam, a wave generator and a harmonic reducer, the cam comprises a cam body, grooves are formed in the end face of the cam body, the grooves comprise first grooves and second grooves which are distributed in the end faces of the two sides of the cam body respectively, the first grooves are continuously or intermittently distributed around the axis of the cam body, and the second grooves are continuously or intermittently distributed around the axis of the cam body. The second grooves are continuously or discontinuously distributed around the axis of the cam body; the length of the cam body in the axial direction is H, the depth of the first groove in the axial direction of the cam body is h1, the depth of the second groove in the axial direction of the cam body is h2, h1 = a * H, 0.1 < = a < = 0.35, h2 = b * H, 0.1 < = b < = 0.35, and after the cam is matched with the flexible bearing, a buffer space capable of providing elastic deformation and absorbing vibration is formed in the first groove and the second groove. The self weight is reduced, the load distribution of the harmonic reducer in the operation process is more uniform, and high-speed, low-noise and small-vibration operation is facilitated.

The utility model discloses a glass processing mold and casting equipment. The glass processing mold comprises a sand mold assembly, a supporting steel pipe and a guide rail, the sand mold assembly comprises a plurality of sand molds, the sand molds are connected through mortise and tenon joint structures, and the sand molds form a curved surface structure; the multiple supporting steel pipes are parallel to one another and are arranged below the sand mold assembly, and the two ends of each supporting steel pipe are arranged on the guide rails. According to the utility model, the sand molds are used as the mold for glass processing, and the connecting structures among the plurality of sand molds are improved, so that the production cost is reduced, the precision and the impact resistance of the mold are enhanced, and the yield of glass castings is further improved.

The utility model provides a crushing tooth for crushing hardened materials and an excavator, relates to the field of crushing teeth, and adopts the technical scheme that the crushing tooth comprises a crushing tooth body, a crushing part is arranged at the lower part of the crushing tooth body, and the crushing tooth body is connected with the crushing part through a connecting bolt; the axis direction of the connecting bolt is perpendicular to the length direction of the crushing tooth body, the upper end of the crushing piece abuts against the lower end of the crushing tooth body, and the thickness of the crushing piece is gradually reduced in the crushing force application direction of the crushing tooth body. The maintenance cost is low, the time for maintaining and replacing related parts is short, and the working efficiency can be improved.