115 results about "Lateral extrusion" patented technology

The invention relates to the technical field of welding, and particularly discloses automatic assembly welding equipment for a main frame of a semi-trailer, which is used for performing assembly welding processing on a main longitudinal beam and an auxiliary longitudinal beam in the main frame and comprises a placing frame, a transverse moving unit, a longitudinal moving unit, a pressing unit, a welding unit and a guiding unit, the transverse moving unit drives the auxiliary longitudinal beam to transversely move, and it is ensured that the auxiliary longitudinal beam is accurately attached to the main longitudinal beam; a top pressing roller of the pressing unit applies vertical downward pressure to the auxiliary longitudinal beam, a side pressing roller applies lateral extrusion force, buckling deformation of the auxiliary longitudinal beam in the welding process is effectively restrained through the dual effects, the assembly straightness and relative position precision of the main longitudinal beam and the auxiliary longitudinal beam are guaranteed, and dislocation is avoided; the guide unit guides the welding gun head in real time based on the extending path of the V-shaped groove of the auxiliary longitudinal beam, it is ensured that the welding gun head always moves along a preset track in the welding process, and deviation is prevented. And the longitudinal moving unit is combined to drive the welding gun to feed at a constant speed, so that the centering degree and continuity of a V-shaped groove welding seam are effectively improved, and the welding quality consistency is guaranteed.

The invention discloses a pile forming form and inter-pile soil compactness evaluation method based on vibro-replacement gravel pile construction data. The method comprises the steps of finding a pseudo-residual vibration working section according to a real-time construction depth-time curve, determining a key stage according to a real-time construction filling amount-time curve, finally finding a time node of downward insertion / upward pulling of a gravel pile by a vibroflot according to an amplitude change rule of a real-time construction current-time curve, calculating a transverse extrusion and expansion range after reinforcement, and finally determining a reinforcement result. And the pile forming form is estimated, and the average compactness of the soil between the piles of the reinforced field is calculated. According to the method, evaluation of the pile forming form and the compactness of the soil between the piles is achieved through on-site construction data, and the method has the advantages of being high in evaluation speed, high in accuracy and the like and is suitable for reinforcing effect evaluation of the vibro-replacement gravel pile treatment foundation with the down-inserting and up-pulling construction technology.

The invention is suitable for the field of casing sidetrack drilling operation, and provides an elastic piece prizing type side pushing mechanism for a cement sheath knapper, the elastic piece prizing type side pushing mechanism comprises a first fixing rod, a second fixing rod, an inserting rod, an elastic piece and a movable roller shell, the elastic piece is bent to jack the movable roller shell to do lateral movement, extrusion force is applied to a casing to induce cracking of a cement sheath, and the elastic piece prizing type side pushing mechanism is suitable for the cement sheath knapper. An elastic piece prizing type lateral pushing structure is adopted, an independent driving cavity, a sealing assembly and a guiding structure do not need to be arranged, the structure of the mechanism is greatly simplified, the overall outer diameter size is reduced, miniaturization and compactness of the mechanism are achieved, the mechanism meets the tripping-in requirements of small well diameters, thin-wall sleeves and complex well conditions, meanwhile, lateral extrusion is achieved through elastic deformation of an elastic piece, and the service life of the mechanism is prolonged. Stable extrusion force is guaranteed, and the defects that an existing piston driving structure is complex and large in size are overcome.

The invention discloses a connecting structure of a stand column and a table leg of a lifting table. The connecting structure comprises at least one locking column arranged at the bottom end of the stand column and a single-side locking device arranged in the table leg and used for transversely clamping and vertically extruding the locking column so as to fix the stand column and the table leg. The single-side locking device comprises a locking plate sliding in the length direction of the table leg, at least one long through hole is formed in the locking plate, and each long through hole comprises a space allowing the large end of the locking column to penetrate through, a small hole communicated with the space and allowing the clamping column in the annular groove of the locking column to be clamped so that the stand column and the table leg can be fixed, and a spring pressing the locking plate. The single-side locking device further comprises an inclined face which is arranged on the bottom face of the locking plate and used for vertically pressing the locking column. The one-way locking device further comprises a vertical elastic pressing assembly which locks the locking plate in a locking state or pokes the locking plate to an unlocking state and positions the locking plate. The connecting structure has transverse extrusion force and vertical extrusion force, so that connection is firm and stable, only one-side locking is achieved, the structure is relatively simple, and clamping is relatively convenient.

This invention relates to a dual-power single-shaft straight-line five-link press. The press includes a machine body, a main shaft, a slide block, a worktable, a power unit, a clutch and brake unit, a slide block guide rail, and five sets of connecting rods. The power unit includes two sets of power output motors respectively located on the left and right sides of the machine body. Each power output motor is connected to a flywheel via a pulley and a belt. The flywheel is connected to the clutch and brake unit, which is connected to the main shaft. Five sets of eccentric connecting rods (7a, 7b, 7c, 7d, 7e) are arranged in a straight line along the axial direction on the main shaft. The five sets of connecting rods are connected to the slide block. The two sets of power output motors, the flywheel, and the clutch and brake unit are symmetrically arranged with respect to the machine body. Connecting rod (7c) is located at the center of the main shaft's axial direction, and the other connecting rods (7a, 7b, 7d, 7e) are symmetrically arranged with respect to connecting rod (7c). The symmetrically arranged linkage structure and dual-sided synchronous drive method of this invention enable the slider to be lightweight while maintaining high rigidity, reducing deformation and lateral extrusion force, and improving motion synchronization and stamping accuracy.

The invention discloses a multifunctional welding device for valve machining, and relates to the technical field of valve welding machining, the multifunctional welding device comprises a tool table, the top of the tool table is horizontally provided with a reference positioning table, and the reference positioning table is in butt joint with a flange hole in the bottom of an oblique insertion type gate valve through a positioning pin. According to the welding device for machining the multifunctional valve, the aligning and shaping mechanism for transverse centering and vertical limiting is arranged, so that a valve body and a valve plate which are spliced by an oblique insertion type gate valve are centered and tightly supported from inside to outside and are tightly buckled from top to bottom in a multi-point manner; then the pressing rod adjusted along with the clamping rod is used for driving the spherical positioning block to position the valve bodies on the upper side of the valve plate in the butt joint angle, meanwhile, the anti-loosening mechanism is used for conducting lateral extrusion on the valve plate, edge warping of the inclined valve plate on the inclined opening sides of the two valve bodies can be prevented, the anti-loosening mechanism can further avoid the valve bodies of the inclined inserting type gate valve, and the anti-loosening effect is good. And the problems that the splicing gap of the valve is easy to loosen, deviate and warp edges are solved under the condition of ensuring that the valve is welded without hindrance.

The invention discloses an anti-deformation type circulating stirring mechanism and a high-fluidity coal bunker provided with the same, and belongs to the technical field of coal mining auxiliary equipment.The mechanism comprises a stirring shaft and a stirring motor which are transversely arranged, a plurality of main stirring blades extending in the radial direction of the stirring shaft are installed on the stirring shaft, and auxiliary stirring blades are connected to the ends of the main stirring blades; a plurality of protective steel wires completely surrounding the auxiliary stirring blade are wound in the length direction of the auxiliary stirring blade, the head ends and the tail ends of all the protective steel wires are fastened by fastening assemblies installed on the side wall of the main stirring blade, and all the fastened protective steel wires are in a tensioned state. The protective steel wires wrap the auxiliary stirring blades through tensile force to form an external rigid protective layer, impact force generated when coal falls and transverse extrusion force generated when the coal is stacked can be effectively dispersed, meanwhile, the steel wires limit deformation of the auxiliary stirring blades, and the deformation risk of the auxiliary stirring blades is remarkably reduced; and the diameter of the protective steel wire is very small, so that the problem that the stirring resistance is greatly increased due to the reinforcing ribs is avoided.

The application discloses a connecting structure of a stand column and a table leg of a lifting table, which comprises a protrusion fixed on the bottom end of the stand column or the table leg, and a cam pressing assembly fixed on the table leg or the bottom end of the stand column and transversely and vertically extruding the protrusion; the two connecting surfaces of the end and the middle of the protrusion are both inclined surfaces with thick inside and thin outside; the mounting base of the cam pressing assembly is provided with a sliding rod, two pressing strips are slidingly matched on the sliding rod, the mounting base is provided with cavities for the sliding of the respective pressing strips, one side of the mounting base is hingedly provided with a cam for pressing the pressing strips to transversely and vertically extrude the protrusion inserted between the two pressing strips and fix the stand column and the table leg, the matching surfaces of the respective pressing strips and the inclined surfaces of the protrusion are all inclined surfaces with thin inside and thick outside, and a lever type handle is connected to the cam for extruding the pressing strips or releasing the extrusion of the pressing strips.

The utility model discloses a double-layer automatic rope returning and guiding device, and relates to the technical field of rope guiding devices. The rope guiding device comprises a rope guiding ring and an arc-shaped pressing plate mechanism, the rope guiding ring is not connected end to end, the arc-shaped pressing plate mechanism is connected to the head section of the rope guiding ring and comprises a first arc-shaped plate, a long slotted hole is formed in the first arc-shaped plate, rotating grooves are formed in the opposite positions of the two sides of the long slotted hole, limiting plates are rotationally connected in the rotating grooves, and the first arc-shaped plate and the second arc-shaped plate are connected through the limiting plates. According to the utility model, through the arrangement of the arc-shaped pressing plate mechanism, when the electric hoist is obliquely hoisted, the steel wire rope can generate lateral extrusion force on the limiting plate, and the force can firstly act on the limiting plate, so that the limiting plate overcomes the elastic force of the spring to rotate; and the cross rod is pressed through the supporting rod, so that the cross rod is pushed to move to trigger the fire cutoff limiter during continuous movement, and a power supply of the electric hoist can be quickly cut off under the condition of inclined hoisting, so that the electric hoist stops moving.

The utility model discloses a domestic sewage purification tank which comprises a tank body used for purifying domestic sewage, shallow sunken parts which are sunken inwards at intervals are respectively arranged on the outer wall of the periphery of the tank body, and a plurality of outer side vertical convex edges and inner side vertical convex edges which are alternately distributed at intervals are formed on the inner side wall and the outer side wall of the tank body. Each outer side vertical rib is in a trapezoid shape which is gradually reduced from top to bottom, and each inner side vertical rib is in a trapezoid shape which is gradually increased from top to bottom. According to the utility model, the strength of the peripheral side walls of the tank body is increased, the anti-extrusion capability can be effectively improved, deformation or fracture caused by lateral extrusion of peripheral soil can be avoided, and the use safety is ensured.

The utility model provides a kind of packing structure for air conditioner wall-hanging machine, including packing main body with containing cavity, it is set three avoidance structure in containing cavity, is pipe slot avoidance groove, air guide avoidance groove and panel body avoidance groove respectively.Pipe slot avoidance groove is set to the pipe slot of air conditioner wall-hanging machine, can effectively buffer edge drop impact, prevent pipe slot root cracking;Air guide avoidance groove and air baffle contour adaptation, avoid extrusion leading to air baffle drop;Panel body avoidance groove provides support space for lower panel body, prevent deformation caused by long-term lateral extrusion.The packing main body is made of foam and other cushioning materials, the air conditioner wall-hanging machine is coated at both ends, and the bottom is also provided with a convenient operation of the handle slot and weight reduction perforation.The structure significantly improves the protection performance in transportation and warehousing process, which can effectively avoid the damage of air conditioner components.

A cutting and crushing system for PC film production includes a cutting device and an edge material crushing device located below the discharge end of the cutting device. The cutting device includes a conveyor table and a pair of cutting components installed above the conveyor table. The cutting components include a movable seat, a blade holder fixing seat, a blade holder, and a blade holder adjusting motor. The advantages of this invention are: during the cutting process, the blade holder can move up and down intermittently with the blade, avoiding prolonged work on the same part of the blade and extending the blade's service life; the blade holder fixing seat can be flipped, allowing blade replacement without stopping the machine; after the edge material enters the crushing box, it first passes through the transverse extrusion feeding roller to create multiple vertical indentations, and then enters the longitudinal extrusion feeding roller to create multiple transverse indentations, forming crisscrossing indentations. When passing through the crushing roller, the crushing rod can easily break up the edge material from each indentation, resulting in uniform particle size of the crushed material.

The utility model relates to the field of corrugated paper, and discloses high-strength double-corrugated-paper-core corrugated paper which comprises two side plates and a middle plate located between the two side plates, a plurality of sets of middle supporting assemblies are arranged between the middle plate and the side plates, and the middle supporting assemblies, the middle plate and the side plates are the same in length. The middle supporting assembly is composed of two mirrored C-shaped supporting plates, and when the middle supporting assembly is pressed, pressure can be dispersed through ingenious deformation of the middle supporting assembly. When the side plates bear pressure, deformation of the C-shaped supporting plates enables the end protrusions in the same rectangular recess or the middle plate groove to slide and be attached to each other, then transverse extrusion force is generated, part of vertical pressure is effectively counteracted, the compressive strength of the whole structure is greatly improved, and compared with common double-corrugated paper, the double-corrugated paper has the advantages of being simple in structure and convenient to use. Stacking pressure of goods with multiple weight can be borne, and sinking and damage are avoided.

The utility model discloses a four -way inspection well, including the main pipe and two cross and with the branch of main pipe intercommunication, and the branch both ends all have the pipe mouth, and each branch is crossed and is divided into two pipe sections, and the first reinforcing rib of the pipe mouth transverse deformation can be hindered is established between the adjacent pipe section of intersection, and the second reinforcing rib of the pipe mouth external expansion can be hindered is established in the root joint of adjacent pipe section of intersection. The utility model can control the longitudinal tensile and transverse extrusion of the branch mouth through the setting reasonable reinforcing structure, restrains the deformation trend in the bearing process of inspection well, and then improves the bearing capacity of inspection well.

The present application relates to a kind of methods for restoring porosity evolution of clastic reservoirs under tectonic extrusion, belonging to the technical field of oil and gas exploration and development.The method comprises the following steps: calculating the total compaction and pore loss of clastic rock samples, selecting samples with similar burial depth, similar rock structure and different maximum paleo-tectonic stress as selected samples, obtaining the lateral compaction and pore loss of the one with larger maximum paleo-tectonic stress by the difference of total compaction and pore loss corresponding to the two selected samples adjacent to the maximum paleo-tectonic stress, and establishing the functional relationship between lateral compaction and pore loss and maximum paleo-tectonic stress;calculating the lateral compaction and pore loss of each lateral extrusion in multiple lateral extrusions;calculating the vertical compaction and pore loss according to the total compaction and pore loss and lateral compaction and pore loss, and establishing the relationship chart between vertical compaction and pore loss and burial depth;using the inverse back stripping method, combining lateral compaction and pore loss and vertical compaction and pore loss, and drawing the porosity evolution curve of clastic reservoirs in geological history under tectonic extrusion.This method solves the problem of being unable to quantitatively calculate lateral and vertical compaction and pore loss in the process of restoring porosity evolution of foreland basin reservoirs.

The application relates to a method for installing and constructing an offshore wind turbine jacket, which can quickly determine whether the jacket is blocked during lowering by judging whether the sling is not stressed, the jacket is not lowered to the design elevation or the jacket is inclined; if the jacket is blocked, a tugboat is controlled to apply a transverse force to the low point of the jacket, so that the lateral extrusion surface of the pile wall of the pile of the insertion tip and the foundation pile is directly separated, the static friction balance is broken, and the gap between the insertion tip and the pile wall is enlarged; the main hook synchronously applies a vertical lifting force, and the jacket is quickly pulled out of the blocking position after the gap is formed. The combined effect of the lateral separation and the vertical pulling of the application can more efficiently break through the blocking threshold, reduce the hard friction damage between the pile wall and the insertion tip, and shorten the unblocking time. The scheme of the application uses two types of conventional offshore construction equipment, i.e., a crane ship main hook and a tugboat, without the need of customizing special devices, and the cooperative operation of the tugboat and the crane ship does not need complex linkage control, so that the equipment investment cost is reduced.

The application discloses a cement stabilized macadam base longitudinal joint extrusion compaction tool and method, and relates to the technical field of road construction. The tool comprises a back plate, one side of the back plate is provided with an extrusion bearing plate for abutting a first cement stabilized base loose mixture area edge joint vertical surface, the other side is provided with a guide operation plate inclined towards a second cement stabilized base paving area, the inside of the back plate is provided with multiple groups of high-frequency vibration generating devices, the excitation end of the high-frequency vibration generating devices is abutted to the back of the guide operation plate, and the non-excitation end is connected to the extrusion bearing plate. The application forms cooperation between the force directional conversion of the guide operation plate and the drag reduction of the high-frequency vibration device, converts the longitudinal pushing force of the paver into longitudinal joint transverse extrusion force, solves the defects of no effective transverse compaction of the longitudinal joint in the traditional process and easy displacement of the baffle, realizes synchronous extrusion and vibration compaction of the longitudinal joint in the paving process, and improves the joint compactness and structural stability.

The utility model provides a heating plate inclination angle adjusting device and a heating plate. The device for adjusting the inclination angle of the heating plate comprises a first flange which is fixedly connected with the heating plate and a first steel ball retainer respectively, and the lower side of the first flange is provided with a first guide inclined plane; the second flange is connected with an external fixing device, a second guide inclined plane is arranged on the lower side of the second flange, the upper side of the second flange is connected with the first guide inclined plane on the lower side of the first flange through a plurality of first steel balls, and the second guide inclined plane on the lower side of the second flange is connected with the upper side of the first steel ball retainer through a plurality of second steel balls; the first steel ball retainer and the first flange clamp the second flange together so as to stabilize the angle adjusting device; and the adjusting part is used for transversely extruding the side surface of the first flange and providing a transverse offset for the first flange so as to adjust the inclination angles of the first flange and the first steel ball retainer.

The utility model discloses a kind of waste washing machine metal shell compression devices, the device includes base, the base is provided with compression box, compression box is a side or the square box of opposite pair of side open, multiple compression mechanism is set in compression box, multiple compression mechanism includes transverse compression component and longitudinal compression component, transverse compression component has symmetric distribution two groups, respectively set in the two sides of adjacent side of compression box opening side, longitudinal compression component is set in the upper portion of compression box, transverse compression component includes transverse extrusion plate and the transverse hydraulic cylinder of being set in the rear of transverse extrusion plate, longitudinal compression component includes downward extrusion longitudinal extrusion plate and the longitudinal hydraulic cylinder of being set in the above of longitudinal extrusion plate.The utility model is compressed to waste washing machine metal shell by transverse, longitudinal and rotation three directions simultaneously, compression efficiency is high, the density of compressed metal square is uniform, metal recovery rate is high, easy to operate, effect is remarkable.

The invention relates to the technical field of coal mine soft rock roadway supporting, in particular to a seismic mitigation and isolation supporting support for a soft rock roadway and a using method of the seismic mitigation and isolation supporting support, and the seismic mitigation and isolation supporting support comprises a two-stage bottom plate, stand columns, tensile anchor pipes, a roadway top beam, high-strength damping springs, short anchors, rod bodies, supporting plates, anchoring plates, a middle shaft and nuts. And the roadway top beam is in lap joint with the stand columns through the high-strength damping springs and the stand column grooves, the three sets of high-strength damping springs are arranged between the two stages of bottom plates and are in lap joint with the stand columns in a transverse extrusion mode, and therefore a freely movable structure is formed. When soft rock roadway supporting is carried out, different degrees of mine pressure appearance impact can be effectively coped, the personal and property safety of underground workers is guaranteed, meanwhile, aiming at the problem of large deformation of a soft rock roadway, the two-stage bottom plate can be continuously used under the condition that the bottom plate slightly heaves, the structure is simple, design is reasonable, practicability is high, and popularization is easy. And the method has a relatively great application prospect.

The invention discloses a welding spot flaw detection system and method based on a fabricated steel member, and relates to the technical field of welding spot flaw detection. The welding spot flaw detection system based on the assembly type steel member comprises a first bottom box, one side of the first bottom box communicates with a second bottom box, the side wall of the second bottom box is connected with a clamping piece through a second spring, a moving plate is slidably connected with a baffle, side plates are placed at the two ends of a to-be-detected piece, and the two ends of each side plate are connected with end plates; and a material guide channel and a liquid storage cavity are formed in the side plate in a penetrating manner. According to the welding spot flaw detection system and method based on the assembly type steel member, the to-be-detected area is limited and selected through the frame plate, the flowing range of the coupling liquid is reduced through pressure sealing, redundant coupling liquid at the edge of the to-be-detected area is recycled, the thickness of the coupling liquid at all positions of the to-be-detected area is kept uniform, and the pressure of the probe and the surface of a to-be-detected piece is appropriate; and middle liquid loss caused by lateral extrusion or adhesion carrying is reduced.

The invention discloses a connecting structure for a stand column and a table leg of a lifting table, which comprises a lug fixed at the bottom end of the stand column or the table leg, and a cam pressing assembly fixed on the table leg or the bottom end of the stand column and used for transversely and vertically pressing the lug, two connecting surfaces of the end part and the middle part of the bump are inclined surfaces which are thick inside and thin outside; a sliding rod is arranged on an installation base of the cam pressing assembly, two pressing strips are arranged on the sliding rod in a sliding fit mode, cavities for the pressing strips to slide are formed in the installation base, and a cam is hinged to one side of the installation base and used for pressing the pressing strips to transversely and vertically extrude a protruding block inserted between the two pressing strips so that the stand column and the table legs can be fixed to each other. The matching faces of the pressing strips and the inclined faces of the protruding blocks are all inclined faces which are thin inside and thick outside, and the cam is connected with a lever type pulling rod used for extruding the pressing strips or loosening extrusion on the pressing strips. The connecting structure does not need tools, is high in mounting speed, has transverse extrusion force and vertical extrusion force at the same time, and is firm and stable in connection.

The invention relates to the technical field of automobile grilles, in particular to a heat dissipation structure of an automobile front bumper grille and an implementation method thereof.The heat dissipation structure comprises a connecting base, a grille body is fixedly connected to the front end of the connecting base, a supporting base A is fixedly connected to the position, located on the inner wall of the connecting base, of the center of the rear portion of the grille body, and buffer blocks are arranged on the two sides of the supporting base A; the two buffering blocks are distributed at the two ends of the grille body, and buffering assemblies are fixedly connected to the front ends of the supporting seats A and the buffering blocks; when the low-temperature starting or high-speed cruising working condition is detected, the blocking net is controlled to be unfolded to reduce the air inflow, the engine warming-up speed is increased, and wind resistance is reduced; under the working condition of high temperature or rapid acceleration, the blocking net is automatically withdrawn, the air inlet area is increased, the cooling efficiency is improved, when low-speed collision occurs, the grating strips are pressed to push the buffer blocks to move backwards, longitudinal impact force is converted into transverse extrusion motion of the force unloading blocks through the inclined face ejector blocks, multidirectional energy dispersion and absorption are achieved, and local impact stress is effectively relieved.

The invention discloses a cutter, a cutter device and a material dicing forming method, the cutter comprises an inner cavity and a flexible wall, at least part of the inner cavity is surrounded by the flexible wall, and the flexible wall is suitable for deviating from the inner cavity to deform when the pressure of the inner cavity is increased and is suitable for being recovered when the pressure of the inner cavity is reduced. According to the technical scheme, by means of deformation of the flexible wall, lateral extrusion of the cut blocks can be achieved, the mechanical occlusal force and cohesive force between particles on the side faces of the cut blocks are enhanced, a stable structure is formed, vibration in the follow-up conveying process is effectively resisted, the cut mark retention rate is greatly increased, and the service life of the cut blocks is prolonged. The collapse of the blocks is effectively prevented, and the density gradient in the blocks can be reduced by laterally extruding the blocks, so that the density of the material is more uniform, and the subsequent uniform sintering of the material is more facilitated.

The invention relates to the technical field of medical instruments, in particular to a bone cavity forming instrument, system and method for dental implant.The system comprises a bone cavity forming instrument, a driving handle integrated with a driving piece and a control unit, and a thread forming part of the instrument is provided with first thread teeth with the thickness smaller than that of target implant thread teeth; and the lead is equal to that of the target implant, so that an under-size spiral path is firstly formed, and the target implant can laterally extrude sclerotin when being screwed into the under-size spiral path. The driving part comprises an ultrasonic driving part and a rotary driving part which are coaxial, and the control unit senses the acoustic impedance value of the alveolar bone in real time by utilizing a piezoelectric transducer in the ultrasonic driving part and regulates the ultrasonic amplitude and the rotary speed in a closed loop according to the acoustic impedance value so as to switch working modes in a self-adaptive manner. According to the application, by combining'first forming and then extruding 'with real-time sensing closed-loop control, the initial stability and the synostosis effect of the implant are remarkably improved.

The invention provides a subway station main body foundation pit structure in a complex environment and a construction method, and belongs to the technical field of subway station main body foundation pit structures. The subway station main body foundation pit structure structurally comprises a main body foundation pit formed in the complex environment of a three-face-ring building and a one-face-ring hillside, and a foundation pit structure is arranged in the main body foundation pit; the foundation pit structure comprises a pit edge base platform structure poured on the peripheral edge of the pit bottom of a foundation pit body, a plurality of water collecting pits are formed in the four corners of the inner side of the pit edge base platform structure, a pit-in-pit base platform structure is poured in the middle of the pit bottom of the foundation pit body, and a plurality of foundation pit side wall structures are poured on the top face of the pit edge base platform structure in the direction corresponding to a three-face ring building. And a water diversion filling layer structure is backfilled in the water accumulation prevention inclined pit in a layered non-tamping manner, so that the transverse extrusion stress on an outer drainage wall structure is reduced, and the problems that in the prior art, the side wall of the foundation pit structure is transversely extruded by soil-water pressure, and the side wall of the foundation pit structure is prone to water seepage and cracking are effectively solved.

The invention discloses a hardware part welding positioning tool capable of being adjusted at multiple angles, and relates to the technical field of welding positioning tools. The device comprises a bottom plate, a mounting structure is fixedly connected to the upper end face of the bottom plate, a longitudinal driving structure is arranged in the middle of an inner cavity of the mounting structure, longitudinal clamping structures are transversely and symmetrically arranged in the inner cavity of the mounting structure, a limiting structure is arranged in the middle of the lower end face of each longitudinal clamping structure, and transverse extrusion structures are longitudinally and symmetrically arranged in the inner cavity of the mounting structure; a lifting structure is fixedly connected to the middle of the upper end face of the bottom plate, a longitudinal driving structure on a mounting structure is adopted, a power transmission chain of a motor, a belt pulley, a rotating rod and a longitudinal sliding block is adopted in the using process, linear feeding of an extrusion rotating disc is matched, and a clamping system with high repeated positioning precision is formed; and then through double guarantee of belt transmission anti-backlash design and a limiting structure, micro-displacement caused by vibration is eradicated, and the requirement of the welding technology for positive and negative zero-point one-millimeter-level precision is met.

This invention provides a replacement structure for the initial support of a small-section water diversion tunnel with large deformation and its construction method. The structure includes a horseshoe-shaped steel arch frame with grouting anchor pipes extending into the surrounding rock. A double-row of advanced grouting guide pipes extending into the surrounding rock are installed on the arched top of the horseshoe-shaped steel arch frame. The web of the arched top has perforations arranged along its arc. The pre-reinforcement system effectively controls the expansion of large deformation, ensuring the safety of the arch replacement construction. The horseshoe-shaped closed structure replaces the original portal-type design, fundamentally solving the lateral extrusion problem from a mechanical perspective. The differential expansion locking mechanism achieved by shear sleeves and sliding wedge arrays solves the problem of asymmetric gap locking under oblique insertion conditions of the guide pipes, enabling the guide pipes and steel arch frame to couple to form a high-strength shear nail structure, significantly improving the overall stiffness, deformation resistance, and construction efficiency of the small-section tunnel support system.

The invention relates to the field of cable production, and discloses electric wire production adjustable cutting equipment which comprises a base. A pay-off assembly; a positioning assembly; a traction assembly; a reciprocating motion assembly and a cutting assembly. By installing the reciprocating motion and cutting assembly, the second motor is started to drive the rotating disc to rotate, the circular shaft eccentrically arranged on the front side of the rotating disc does circular motion along with the rotating disc, the circular shaft is sleeved with the limiting frame, and the rotating motion of the rotating disc can be converted into the reciprocating linear motion of the rotating disc; when the toothed part of the half gear is meshed with the rack, the rack is driven to move on the T-shaped plate in the horizontal direction, so that the cutting assembly can do reciprocating motion, and when the cutting assembly and the electric wire are synchronous in speed, the hydraulic rod acts immediately to push the two cutters which are arranged in a staggered mode to be rapidly combined to conduct vertical shearing; therefore, friction and lateral extrusion force between the cutting edge of the cutter and the surface of the electric wire are reduced.

The utility model relates to the technical field of building engineering, and disclose a kind of self-leveling auxiliary flattening device, comprising: vehicle body, the side wall of vehicle body is rotatably connected with pull rod;Scrape flat structure, scrape flat structure includes big arm, scraper, vertical shaft and press bar, big arm liftable setting is at the top of vehicle body, vertical shaft is fixedly connected with scraper, vertical shaft is rotatably connected with big arm, press bar elastically sets on the top surface of big arm, press bar can be connected with the angle of scraper and lock the scraper, by lifting press bar, press bar drives plug rod to move up, after rotating scraper and adjusting to appropriate position, loosen press bar, press bar resets and makes plug rod be clamped into the thrust hole of another corresponding position, and further realize the angle adjustment and lock of scraper, cooperate pull rod and push or pull vehicle body to move, by the angle change of scraper, push and pull vehicle body, guarantee the convenience of construction and the scraping effect of material, since the lateral extrusion of inclined scraper to material, promote material flow and then improve the self-leveling effect.