49 results about "Bending joint" patented technology

The invention discloses a forming injection molding device for a medical polymer puncture frame, relates to the technical field of forming injection molding, and aims to solve the technical problem that a traditional guide channel is of an equal-diameter straight pipe structure, and the puncture precision is insufficient. According to the invention, the stepped inner cavity is matched with the embossed concave plate, so that the precise stepped reducing and low-friction inner wall is formed at one time, and the puncture precision is improved; the extrusion mechanism is bidirectionally driven to ensure complete molding and lossless demolding of the convex patterns, so that the product qualification rate is improved; the pressure buffering mechanism reduces micro-convex pattern gaps through pressure regulation and control, so that the integrity and the injection molding quality are improved; the reverse mold mechanism realizes automatic demolding through elastic deformation, the demolding time is shortened, and structural damage is avoided; the bending joints optimize the performance of the embossed concave plate, prolong the service life of the embossed concave plate and reduce the damage rate of the micro-embossed concave plate; through the design, the problems that precision and functionality of traditional equipment are difficult to consider, demolding is prone to damage and the like are solved, production efficiency and product stability are improved, and reliable structural guarantee is provided for puncture operation.

The invention relates to the technical field of medical apparatuses and instruments, and provides a portable electric vibration micro fracture device which comprises a holding part, one end of the connecting rod assembly is connected with the holding part; the first end of the bent connector is detachably connected with the end, away from the holding part, of the connecting rod assembly, the second end of the bent connector is provided with an execution piece used for bone tissue punching, the interior of the bent connector is detachably connected with an axial vibration driving piece, and the axial vibration driving piece acts on the execution piece and is used for driving the execution piece to reciprocate in the axial direction of the axial vibration driving piece; the power supply assembly is embedded in the holding part and is electrically connected with the vibration driving assembly; the elbow connector and the connecting rod assembly are detachably connected, elbow connectors with different bending angles can be rapidly and conveniently replaced, and the operation requirements of different crowds are met; the axial vibration driving part can drive the executing part to do reciprocating motion in the axial direction, progressive punching is achieved through stable axial vibration, the risk caused by out-of-control operation force can be greatly reduced, and the operation safety is improved.

The invention discloses an ultra-short radius directional horizontal well windowing sidetrack drill and a drilling construction method thereof, and relates to the field of drilling construction. According to the ultra-short radius directional horizontal well windowing sidetrack drill and the drilling construction method thereof, a titanium alloy drill rod and a flexible drill rod are connected, a flexible universal joint is arranged between the titanium alloy drill rod and the flexible drill rod, a non-magnetic flexible drill rod is connected with the flexible drill rod, a flexible screw motor is connected with the non-magnetic flexible drill rod, and a centralizer is connected with the flexible screw motor. According to the well drilling construction method, horizontal well drilling is carried out after the bottom of a lateral window is drilled through a drill bit along a whipstock, a new operation instruction is transmitted into an MWD wireless orientator while drilling in a flexible screw motor through a drill bit track adjusting system, and the drill bit is controlled through a bent connector to change the moving track. According to the method, in the horizontal drilling process, the moving track of the drill bit can be changed according to the requirements of customers.

The present application relates to the technical fields of ship engineering, in particular to a wrenching tool for n-bend joint and a using method thereof, the wrenching tool for n-bend joint comprises a sleeve ring and a wrenching rod, the sleeve ring is detachably sleeved on the outside of the locking sleeve, the circumferential side of the sleeve ring is provided with sleeves at positions opposite to each lug, the first end of each sleeve is arranged towards the center of the sleeve ring, and the first end of each sleeve is sleeved on the outside of each lug; the position of the circumferential side of the sleeve ring provided with the sleeve is connected with a locking mechanism for fixing the sleeve at the position; the first end of the wrenching rod is inserted into the second end of one of the sleeves, and the second end of the wrenching rod extends away from the sleeve ring; when in use, the lugs do not need to be knocked, the vibration generated by knocking the lugs is avoided, and the adverse effects of the n-bend joint on the stability of the pipeline caused by the way of installing or dismounting the lugs by knocking are avoided.

The utility model discloses an umbrella support rib group and an umbrella. The umbrella support rib group comprises an upper nest, a lower nest, long support ribs and short support ribs, the long branch bones and the short branch bones are arranged in pairs, and a plurality of pairs of long branch bones and short branch bones are arranged; a first bending joint is arranged at the first end of the long supporting rib; a second bending joint is arranged at the first end of the short supporting rib, and a third bending joint is arranged at the second end of the short supporting rib; the first bending connector is provided with a first clamping hook groove, the second bending connector is provided with a second clamping hook groove, the upper nest is provided with a first clamping hook, the lower nest is provided with a second clamping hook, the first clamping hook is matched with the first clamping hook groove in a clamping mode, and the second clamping hook is matched with the second clamping hook groove in a clamping mode. The second end of the short supporting rib is connected with the middle section of the long supporting rib through a third bent connector. According to the umbrella supporting rib set, reliable connection is achieved through matching of the specific clamping hooks and the clamping hook grooves and the structure of the bent connectors, and the stability of the umbrella is improved; the structure is simple and light, assembling is easy, and practicability is high.

The utility model discloses a nodular cast iron pipe fitting elbow joint suitable for complex terrains, which comprises an elbow joint, a pipeline, locking rings and a connecting ring, two ends of the elbow joint are respectively connected with the pipeline through the locking rings, and the locking rings are fixed on the elbow joint through mounting sleeves and locking screws. The connecting ring is connected with the connecting rod in a hanging mode through the hanging groove and matched with the connecting sleeve on the pipeline in a clamped mode, and the connecting rod tensions the connecting ring and the locking ring through the adjusting sleeve and the nut so as to achieve rapid locking. The limiting groove is clamped with a clamping rib on the outer side of the connecting sleeve to limit rotation of the connecting ring, a check ring is arranged on the outer side of the connecting sleeve and used for limiting longitudinal sliding of the connecting ring, the two ends of the bent connector are in sealing fit with a sealing ring through clamping rings to improve the sealing performance, and a reinforced fiber layer is embedded in the sealing ring to enhance the pressure resistance. The bent connector is simple in structure and convenient to install, can achieve rapid locking and efficient sealing of the bent connector and a pipeline, meets the use requirements under the complex terrain environment, and solves the problems that a traditional pipe fitting is loose in connection and poor in sealing performance.

The application provides a self-adaptive grasping dexterous hand thumb, which comprises a side swing joint, a bending joint and a fingertip, the side swing joint comprises a fixed base, a side swing driver and a first reversing transmission assembly; the bending joint comprises a connecting base, a finger joint linkage assembly, a bending driver and a second reversing transmission assembly. The application realizes the three-joint structure of the bionic thumb, can realize multi-directional rotation and bending actions, improves the degree of freedom and action accuracy, realizes the double driving function of side swing and bending through the built-in driving structure, thereby expanding the movable range. The self-adaptive assembly can dynamically adjust the relative position and clamping force of each finger joint of the thumb in real time, so as to realize the self-adaptive enveloping of the object, and further significantly improve the grasping stability of the dexterous hand thumb for objects of different shapes and sizes, effectively expand the application scene, and the application has the advantages of high flexibility, strong grasping adaptability, high action accuracy, fast response speed, high degree of freedom, high space utilization and the like.

The utility model discloses an elbow joint which comprises a first straight pipe and a second straight pipe, threads are arranged on the inner wall of the first straight pipe and the inner wall of the second straight pipe, the first straight pipe and the second straight pipe are connected with two first pipelines needing to be in butt joint respectively, and the elbow joint further comprises a spiral corrugated elbow. The two ends of the spiral corrugated bent pipe are fixedly connected with a first straight pipe and a second straight pipe respectively, reinforcing ribs are arranged on the first straight pipe and the second straight pipe, a first partial pressure pipe is arranged on one side of the first straight pipe, the first partial pressure pipe comprises a corrugated pipe section, and the first partial pressure pipe is connected with a second pipeline needing to be in butt joint or one first pipeline. The threaded corrugated bent pipe is arranged between the first straight pipe and the second straight pipe, so that the threaded corrugated bent pipe can be deformed or bent to a certain extent according to the actual direction condition of the first pipelines when the threaded corrugated bent pipe is in butt joint with the two first pipelines, the butt joint is more flexible, the overall manufacturing precision can be reduced, and the manufacturing cost can be reduced; and the condition that the device cannot be butted with the first pipeline is reduced or avoided.

The invention relates to a tongue-and-groove-steel sleeve-prestress connection anti-bending joint for a full-fabricated concrete beam. The tongue-and-groove-steel sleeve-prestress connection anti-bending joint comprises a prefabricated concrete notch beam section, an externally-wrapped thin steel sleeve and post-tensioned prestressed steel bars. The two sections of precast beams are connected into a whole through transverse rabbets at the ends of the beam sections, steel-encased sleeves arranged at the end connecting areas, prestressed steel bars in prestressed ducts and the like to form the node overall connecting rigidity, and the rigidity of the whole-span beam structure and the continuity of internal force transmission are achieved. The technical advantages of flexibility, repeatability, replaceability and the like of tongue-and-groove structures, bolt joints, steel-encased sleeves and prestress connection construction are fully utilized, the comprehensive performance is good, longitudinal stressed steel bars at the beam end of the vertical joint face of the tongue-and-groove are discontinuous and do not appear or are embedded or overlapped, and the problems that in the prior art, the standardization degree is low, the structure is complex, and the construction cost is high can be effectively solved. The problems of low bearing capacity, high assembly precision requirement, high quality control difficulty, poor recoverability, repeatability and replaceability, incapability of adapting to extreme weather conditions and the like are solved.

An augment device includes a hollow sleeve surrounding a channel extending through the hollow sleeve from a top to a bottom of the hollow sleeve, the hollow sleeve comprising a wall having an inner face and an outer face. The hollow sleeve includes at least one bending joint, the bending joint being configured for compressing the channel. Thereby the hollow sleeve may be compressed under an external force, leading to a decreased circumference and width of the hollow sleeve. This leads to a gap between the perimeter of the augment device and surrounding bone material, breaking any connections. By virtue of this, a much facilitated removal of the augment device can be achieved. Further, an extraction tool includes grippers for engaging and compressing the augment device, and further instruments, particularly a jig, for achieving an effective removal.

A method for assembling pipe joints in an aircraft actuator hydraulic system assembly block is disclosed to achieve precise assembly between the bent pipe joint and the assembly block base. First, a measurement reference conversion component is used to derive the vertical distance from the intersection of the two central axes of the first and second bent joints to the upper reference plane of the assembly block base. Then, based on the derived values, a measurable assembly dimension B is determined. This measurable assembly dimension B is then used as the reference dimension, and the assembly of the upper bent joint of the assembly block is completed using an aircraft actuator hydraulic system assembly block assembly fixture. This method for assembling pipe joints in an aircraft actuator hydraulic system assembly block meets the assembly dimension requirements for upper bent pipe joints during aircraft maintenance, thus ensuring aircraft maintenance quality and safe flight.

The application provides a kind of elbow joint turning equipment, including workbench, processing chamber, numerical control turning assembly, holder and stopper, processing chamber is fixed on the upper side of workbench, numerical control turning assembly and stopper are fixed at the opposite ends of processing chamber respectively, holder is installed in the middle of processing chamber and is coaxially arranged with stopper, for clamping workpiece, adjusting the inclination angle of workpiece and driving workpiece to rotate;The stopper includes a limiting ring, a plurality of arc-shaped push plates and an adjuster, the push plates are placed in the limiting ring and are coaxially arranged with the limiting ring, a plurality of elastic plates are fixed on the concave surface of the push plates along the radial direction, the adjuster is fixed in the middle of the convex surface of the push plate, the free end of the adjuster penetrates through the inside and outside of the limiting ring, for adjusting the distance between the push plate and the limiting ring.The application solves the problem that it is difficult to overcome centrifugal force in the prior art, which leads to unstable clamping.

The application relates to the technical field of submarine optical cable connection, and discloses an injection-molding top-pressing type submarine optical cable joint box, which comprises a cable rubber anti-bending device, one end of the cable rubber anti-bending device is fixedly connected with a metal anti-bending device adapter, one end of the cable rubber anti-bending device is fixedly installed with a metal anti-bending joint through the metal anti-bending device adapter, one end of the metal anti-bending joint is fixedly installed with an injection-molding cable joint insert, the inside of the injection-molding cable joint insert is fixedly provided with an injection-molding joint, the inner wall of the cable rubber anti-bending device is fixedly installed with a PU pipe body, and one end of the PU pipe body is sleeved with one end of the injection-molding joint. The injection-molding process is used to inject an injection-molding colloid to the connection interface, the colloid is filled and solidified in a No.1 annular groove, a No.2 annular groove and a thread groove of a submarine cable outer sheath, and a connection structure with mechanical interlocking and sealing integration is formed. Meanwhile, the anti-bending chain formed by the cable rubber anti-bending device and the metal anti-bending joint and the weight-reducing framework jointly improve the anti-bending capacity and the structural stability of the joint box.

The invention relates to the technical field of ultrasonic detection, and provides a controllable ultrasonic detection device which comprises a handle, a bendable sheathing canal, a straight sheathing canal, a controllable bending connector, an ultrasonic probe, an intra-sheath control kit and a quick release base, the handle is connected with the bendable sheathing canal, the bendable sheathing canal is connected with the straight sheathing canal, the straight sheathing canal is connected with the controllable bending connector, and the controllable bending connector is connected with the ultrasonic probe. A bendable sleeve is arranged outside the controllable bending joint and is controlled by the intrathecal control kit, and meanwhile, the controllable bending joint can be connected with the ultrasonic probe through the quick release base. The angle of the ultrasonic probe is controlled through the control suite so that the ultrasonic probe can be attached to the surface of a detected organ, and effectiveness and accuracy of ultrasonic detection in minimally invasive surgery are improved. The bendable sheathing canal is connected with the straight sheathing canal and the handle, the bendable sheathing canal is manually controlled to adapt to different surgical operations, the operation difficulty is reduced, and the surgical efficiency is improved. The ultrasonic probe is designed to be of a quick release structure, the probe can be controlled through the device, and the ultrasonic probe can be quickly installed on the robot to achieve robot control.

The present application provides a kind of elastic bending section type coal mine casing device underground, comprising: a plurality of head-to-tail connection casing body, each casing body includes elastic member, sealing portion, first joint, second joint, first joint, second joint is located at the both ends of elastic member, sealing portion is arranged on the surface of elastic member and covers elastic member, the both ends of sealing portion are connected with first joint and second joint respectively, two casing bodies connected adjacently are connected by first joint and second joint, elastic member 2 is used as the framework structure of casing body, sealing portion 3 is arranged on the surface of elastic member 2 to seal elastic member 2, which plays the role of water isolation and pressure resistance, the casing body has certain flexibility in axial direction, and can be lowered into along the long distance of curved borehole;It has enough compressive strength in radial direction, can withstand hole wall surrounding rock stress, water pressure, gas pressure and the like, the elastic members of the casing bodies arranged adjacently are connected by first joint 1 and second joint 5, and the working efficiency of casing in raise hole is improved.

The invention discloses a quick dismounting device for an elbow joint of a directional coring drilling tool, and relates to the technical field of drilling tool dismounting. The quick dismounting device for the elbow joint of the directional coring drilling tool comprises a drilling tool horizontal adjusting assembly, a drilling tool dismounting assembly and a drilling tool fixing assembly. The horizontal adjusting assembly comprises a track, a moving trolley, a first conveying roller and a second conveying roller. The moving trolley is arranged on the track and can move along the track; the first conveying roller is rotationally arranged at one end of the track, the second conveying roller is rotationally arranged on the moving trolley, and the two conveying rollers are collinear in conveying direction and identical in height; and the second conveying roller is connected with a driving mechanism. The dismounting assembly comprises a mounting seat, a telescopic piece and a holding piece; the mounting base is arranged on the moving trolley, the fixed end of the telescopic piece is hinged to the mounting base, and the holding piece is hinged to the telescopic end of the telescopic piece. The drilling tool fixing assembly is arranged on the moving trolley and located between the enclasping piece and the second conveying roller. The device can be rapidly deployed in complex terrains, the bent connector is rapidly disassembled, the labor intensity is reduced, and the operation efficiency is improved.

The invention relates to a while-drilling adjustable bent connector device which comprises an upper shell, a liquid storage device, a driving device and a liquid conveying pipeline are arranged in the upper shell, and the driving device is connected with the liquid storage device; the piston part is arranged in the upper shell in a manner of moving up and down, a piston cavity is formed between the outer wall of the piston part and the inner wall of the upper shell, and the piston cavity is connected with the liquid storage device through a liquid conveying pipeline; the bending assembly comprises a ball sleeve and a ball head, the ball sleeve is arranged in the upper shell, a second spherical surface on the upper portion of the ball head is rotatably embedded in a first spherical surface on the inner wall of the lower portion of the ball sleeve, and one side of the piston piece abuts against one side of the top of the ball head; and the lower part of the ball head extends to the lower part of the upper shell and is connected with the lower shell, so that the lower shell and the lower drilling tool connected with the lower shell are driven to turn through the ball head. According to the invention, the technical problems that the control accuracy of the existing underground bending connector is low and the requirement of underground accurate orientation cannot be met are solved.

The utility model belongs to the technical field of medical instruments, and particularly relates to a disposable endoscope suturing device which is used for tissue suturing in a surgical operation. Comprising a fixed handle, a locking screw, a needle mounting button, a rotating assembly, a sleeve, a forceps head assembly protective cap, a bending shifting wheel, a movable handle, a suture steel wire, a pressing plate steel wire, a rotating connecting rod, a bending joint assembly, a forceps head short pipe and a suture needle forceps head assembly. A movable handle mounting hole is formed in the upper end of the movable handle, the movable handle mounting hole and a movable handle mounting column at the corresponding position of the fixed handle are mounted in a matched mode, the movable handle mounting hole can rotate in the axial direction of the movable handle mounting column, the movable handle is provided with a suture steel wire mounting hole, and the near end of the sleeve penetrates through a sleeve hole in the far end of the fixed handle. The far end of the sleeve pipe is connected with the bending joint assembly; the near end of the forceps head short tube is connected with the bending joint assembly, and the far end of the forceps head short tube is connected with the suture needle forceps head assembly.

The invention relates to the technical field of power transmission equipment, in particular to a cable connecting piece which is used for being connected with a cable connector sleeved with a corrugated pipe, an annular protruding part coaxial with a cavity axis is arranged in an end sleeve body to divide a containing cavity, an axial stopping shoulder part is formed on the first side, and the end of the corrugated pipe obtains a definite axial reference; a corrugated pipe locking structure in the first containing section is matched with an annular groove in the periphery of the corrugated pipe in a locking mode, and axial and circumferential positioning of the corrugated pipe is achieved. The end sleeve body and the bending joint body are detachably connected through the connection coupling structure and jointly define a through cavity from the first accommodating section to the bending channel through the second accommodating section, and continuous guiding of steering leading-out is kept; a cable locking piece is arranged in a cable locking cavity formed by the second containing section and the cavity section on the inner side of the connecting end of the bending connector body, the periphery of the cable is clamped in the radial direction, and the axial position of the cable is limited.

The invention relates to the technical field of medical instruments, in particular to a bendable smoke suction snake bone electric hook. Comprising a handle assembly, an attraction conductive assembly, a bending assembly, an adjusting assembly, a tool bit assembly and a power line. The attraction conductive assembly is arranged in the handle assembly and extends in the axial direction of the handle assembly, an extending part comprises a push-pull inner pipe and an outer functional pipe, and the end of the push-pull inner pipe is fixedly connected with the push-pull movable pipe; the bending assembly comprises a first bending connecting block, a second bending connecting block and a plurality of bending joints arranged between the two connecting blocks, and the bending assembly is fixedly connected with the tool bit assembly through the first bending connecting block and fixedly connected with the extending end of the push-pull inner pipe through a push-pull piece. The adjusting assembly comprises a rotating adjusting piece and a bending adjusting piece which are sequentially arranged at the end of the handle assembly and used for controlling rotation and bending of the tool bit assembly respectively. Under the condition that the electric hook can be bent and rotated, the requirement for effective suction of operation smoke can be met, and the operation accuracy is improved.

This invention provides a polymer anti-buoyancy anchoring device and method, relating to the field of geotechnical anchoring technology. Addressing the current problems of poor synergistic stress distribution between polymer anchors and reinforced concrete structures, and the susceptibility of polymer anchors to failure, this invention utilizes a bending joint and a stabilizing sleeve to wrap and protect the outer anchoring section, thereby improving its bending resistance and reducing failures caused by offset stress during construction and use. The bending joint establishes a connection between the anchoring steel and the polymer anchor, enhancing the polymer anchor's pull-out resistance and achieving synergistic stress distribution with the reinforced concrete structure.

1. The name of the design product: flange bend joint (G12FM). 2. The use of the design product: pipe connecting parts for gas valve. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

A water pipe connector that rotates in both horizontal and oblique directions includes a horizontally arranged connecting pipe and an obliquely arranged bend connector. One end of the bend connector is coaxially connected to the connecting pipe via a spherical rotary joint, and the bend connector rotates around the axis of the connecting pipe. The other end of the bend connector is inclined relative to the axis of the connecting pipe and has a rotatable nut. The spherical rotary joint includes a first hemispherical shell and a second hemispherical shell, and a rotary connector is provided between the first hemispherical shell and the second hemispherical shell. The rotary connector includes a radially movable joint assembly threaded to the connecting pipe and a retaining ring assembly that cooperates with the radial rotation of the bend connector. This invention achieves the rotational performance of being inclined relative to the axis of the rotary joint by rotating the bend connector around the axis of the rotary joint and using a rotary nut, thus achieving the technical purpose of bidirectional rotation in both horizontal and oblique directions and expanding the connection angle adaptability range of the water pipe connector.

This utility model discloses a plastic-coated steel pipe bend joint suitable for low-temperature conditions, comprising a bend section and straight pipe sections welded to both ends, forming a bend structure. It also includes: a stress buffer device comprising a corrugated compensator welded to the junction of the bend section and the straight pipe section, and a flow-damping orifice plate connected to the other end face of the corrugated compensator; and a damping sliding pair comprising a damping sliding tube fixed to the outer wall of the flow-damping orifice plate and a fixed damping kit fitted into the inner wall of the straight pipe section. The end face of the corrugated compensator connected to the flow-damping orifice plate is a free end that slides axially along the straight pipe section, and the damping sliding tube and the fixed damping kit achieve a sliding seal through an elastic seal. This utility model uses the sealing gas, the elastic material in the corrugated compensator, and the friction generated by the relative sliding of the damping sliding tube and the fixed damping kit to jointly counteract the pressure caused by frost heave, making the joint fully adaptable to low-temperature conditions.

An adjustable-while-drilling bent sub device, which comprises: an upper housing (1), a liquid storage device (4), a driving device (5) and liquid delivery piping (6) being arranged in the upper housing (1), and the driving device (5) being connected to the liquid storage device (4); a piston member (3), wherein the piston member (3) is arranged in the upper housing (1) and can move vertically therein, a piston cavity (301) is formed between the outer wall of the piston member (3) and the inner wall of the upper housing (1), and the piston cavity (301) is connected to the liquid storage device (4) by means of the liquid delivery piping (6); a bending assembly (7), the bending assembly (7) comprising a ball joint sleeve (701) and a ball joint (702), wherein the ball joint sleeve (701) is arranged inside the upper housing (1), a second spherical surface of the upper portion of the ball joint (702) is rotatably embedded in a first spherical surface of the inner wall of the lower portion of the ball joint sleeve (701), and one side of the piston member (3) abuts against one side of the top of the ball joint (702); and a lower housing (2), the lower portion of the ball joint (702) extending below the upper housing (1) and being connected to the lower housing (2), so as to drive, by means of the ball joint (702), the lower housing (2) and a lower drilling tool connected to the lower housing (2) to bend. The device solves the technical problem of existing downhole adjustable bent subs suffering from low control accuracy and being unable to meet the requirements of precise downhole directional control.

This invention belongs to the field of medical device technology, specifically relating to a delivery device. The delivery device of this invention includes a sheath assembly, a bending assembly, a moving assembly, and a clutch sleeve. The sheath assembly includes a sheath and a traction wire connected to the distal end of the sheath. The bending assembly includes a bending handle and a bending connector. The bending handle is sleeved outside the sheath, and the bending connector is rotatably connected to the bending handle and can move relative to the sheath along the axial direction of the sheath. The moving assembly is arranged back-and-forth along the axial direction of the sheath with the bending assembly. The moving assembly includes a moving handle and a moving connector. The moving handle is sleeved outside the sheath, and the moving connector is fixed relative to the sheath but rotatably connected to the moving handle. The clutch sleeve is disposed between the bending handle and the moving handle and can move back-and-forth along the axial direction of the sheath. The clutch sleeve has a first state where the bending handle and the moving handle are separated before movement and a second state where the bending handle and the moving handle are engaged after movement.

The utility model discloses a novel box-type house folding beam which is characterized in that a beam body assembly is of a quadrilateral structure, and a bending combination part is arranged in the middle of the top surface of the beam body assembly; a vertical extending edge is arranged on the outer side face and is arranged in a double-layer pressing mode. And a concave-convex matching part is arranged on the top surface or the bottom surface. Through the structural arrangement, the bending joint part is designed in the middle of the top surface, so that the bending joint part cannot be separated in the transverse direction when being stressed in the vertical hoisting process; furthermore, the bending combination part is arranged on the top surface combined with the wall plate, so that the vertical deformation can be controlled at the minimum amplitude, and the situation that the combination point is loosened or separated due to overlarge deformation is prevented. According to the utility model, the vertical extension edge with the double-layer press-fit structure is only arranged on the outer side, and the wallboard is riveted on one side, so that when the thickness of the wallboard exceeds or is smaller than the width of the beam body, the assembly of the wallboard and the beam body is not influenced; the upper beam body assembly and the lower beam body assembly are combined through concave-convex matching of the upper beam body assembly and the lower beam body assembly, and dislocation and deviation during up-and-down lap joint matching are avoided.

This invention belongs to the field of oil and gas field development and relates to an integrated system and method for abrasive jet casing window opening and sidetracking. The system includes a drill pipe, the top of which is connected to the drive unit of the drilling rig, and the bottom of which is connected to a window opening and sidetracking tool string. The window opening and sidetracking tool string is composed of an electro-hydraulic orienting device, a bend joint, a connecting sub, a shaping milling tap, and a hydraulic drill bit connected in sequence. Both the drill pipe and the window opening and sidetracking tool string have abrasive slurry passage chamber inside. The method utilizes abrasive jets to perform non-contact window opening in the casing section, and continuously enters the sidetracking stage during the same tool string operation. The orienting of the tool string is controlled by the electro-hydraulic orienting device, and the small-angle geometric offset provided by the bend joint ensures that the sidetracked wellbore extends along a predetermined direction. When necessary, the window is milled and shaped by the shaping milling tap, which reduces the frequency of process switching, reduces operational risks, and improves the controllability of the window opening position and wellbore trajectory. It is suitable for engineering applications in old well stimulation and complex well conditions.