685 results about "Traveling block" patented technology

The utility model discloses a lifting row with adjustable lifting point spacing, which relates to the technical field of lifting appliances and comprises a beam body and at least one lifting pulley block, upper lifting points are arranged at two ends of the beam body, the lifting pulley block comprises a plurality of transverse shafts which are transversely and detachably connected onto the beam body, and two ends of a third transverse shaft at the edge position are connected with two rope heads of a steel wire rope. Two fixed pulleys I in the direction of the first plane are arranged below the transverse shaft I at the other edge, fixed pulleys II are arranged at the two ends of the transverse shaft II in the middle, and the fixed pulleys II on the front side of the beam body and the fixed pulleys II on the rear side of the beam body are located on two parallel planes and are perpendicular to the first plane; the steel wire rope is sequentially connected with the second fixed pulleys and the two first fixed pulleys in series, a pulley is hung below the steel wire rope between every two adjacent second fixed pulleys in the same plane, and the distance between the pulleys can be changed by changing the position of the transverse shaft. According to the lifting row, a certain pair of lifting points can be independently adjusted, the operation is convenient and fast, and the stress of the whole group of lifting points is still balanced after the distance between the lifting points is changed.

An energy absorption device for absorbing at least a portion of impact energy occurring in an impact of an impact body in a safety net construction includes at least one cable guiding unit forming at least one cable receiving region for receiving and / or guiding at least one cable, and further includes at least one energy absorption element, arranged in the cable receiving region and forming at least one friction surface for the guided cable, the energy absorption element being configured, if a force inducing movement of the cable across the friction surface is exerted on the cable, to selectively absorb at least a portion of energy the force created via substantial deformation and / or abrasion of the friction surface. A cable brake, particularly a block-and-tackle cable brake, includes an energy absorption element of the energy absorption device, which is arranged at the deflection element on a side facing toward the cable.

The invention discloses a disassembly-free top drive drilling device pulley and guide rail system, relates to the field of petroleum drilling engineering, and solves the problems that a top drive drilling device is too long in assembly and disassembly time and too high in safety risk when applied to a telescopic derrick drilling machine. The derrick is divided into an upper derrick section and a lower derrick section; the slide rail comprises an upper slide rail section and a lower slide rail section; the upper-section sliding rail and the lower-section sliding rail are hooked through a hook; an upper-section sliding rail and a lower-section sliding rail are respectively arranged on two sides of the inner sides of the derrick upper section and the derrick lower section; two ends of the pulley are in contact with the upper-section slide rail and the lower-section slide rail; the working surfaces of the upper-section sliding rail and the lower-section sliding rail in contact with the tackle are on the same plane to form a tackle guide channel; the middle of the pulley is connected with a top drive; the top drive is hung below the traveling block and moves up and down along with the traveling block. According to the disassembly-free top drive well drilling device pulley and guide rail system, the assembly and disassembly time is saved, the danger in the assembly and disassembly process is reduced, and the well drilling efficiency and the construction quality are improved.

The invention discloses electric-drive automatic workover operation equipment for a vertical derrick. The electric-drive automatic workover operation equipment comprises a self-propelled chassis, the vertical self-balancing derrick, a traveling block guide rail, a traveling block, an electric winch, a wellhead automatic platform and a hydraulic pipe conveying machine. The self-propelled chassis is installed at the bottom of the main vehicle and provided with four stepping supporting legs, and a stepping device is arranged below each stepping supporting leg. A balance beam type crown block is mounted at the top end of the upright self-balancing derrick; the traveling block guide rail is arranged along the front side of the upright self-balancing derrick; the traveling block moves up and down along the traveling block guide rail; the wellhead automatic platform is integrated with a hydraulic clamp, a righting manipulator and an automatic hoop finder; the hydraulic pipe conveying machine adopts a horizontal-to-vertical bidirectional lifting mechanism, the vertical self-balancing derrick is configured, a loaded crown block is small in offset, the derrick is configured with a traveling block guide rail, a traveling block moves along with the guide rail and is small in wind load drift, the wellhead pipe column handover processing efficiency is high, and the time for a traveling crane system of the workover rig to participate in pipe column handover is shorter; and the overall efficiency of the automatic tubular column processing operation of the workover rig is improved.

The invention belongs to the technical field of petroleum drilling machine equipment, and discloses a petroleum drilling machine stepping type translation device and a translation method.The petroleum drilling machine stepping type translation device comprises a mounting frame connected with a drilling machine base, a jacking oil cylinder is connected to the bottom of the mounting frame, the end of a cylinder rod of the jacking oil cylinder is connected with a rotating device, and a sliding device is connected to the lower portion of the rotating device; the installation frame is connected with a drilling machine base through a plurality of sets of pin shafts I, the bottom of the installation frame is connected with the jacking oil cylinder through bolts, the end of a cylinder rod of the jacking oil cylinder is of a threaded structure and is connected to a rotary support of the rotating device, a rotary flange on the rotating device is fixed to a sliding frame of the sliding device through bolts, and a roller chain pulley is arranged in the sliding frame. The bottom of the roller chain pulley is attached to the sliding shoe. Stepping oil cylinders are hinged to the two sides of the sliding frame respectively, the stepping oil cylinders are double-outlet-rod oil cylinders, and the two cylinder rod ends of the stepping oil cylinders are hinged to lug seats on the two sides of the sliding shoes through pin shafts II respectively; the drilling machine can quickly move back and forth or rotate in situ.

The suspended top type releasing and recycling device for the ocean robot comprises a frame body, a first sliding rail device is fixedly connected to the top of the frame body, the first sliding rail device is sequentially and slidably connected with a first mounting frame, a second mounting frame and a traveling block device, the first mounting frame is provided with a first rope guide wheel, and the second mounting frame is provided with a second rope guide wheel; the traveling block device is provided with a third rope guide wheel, a swing stopper and a submarine cable manager; a third sliding rail device is vertically arranged at the bottom of the frame body, and a second sliding rail device is vertically arranged on the second mounting frame close to the traveling block device; the cable storage winch, the friction traction winch, the first rope guide wheel, the second rope guide wheel, the third rope guide wheel, the oscillation stopping device and the submarine cable manager are rotationally connected in sequence through an umbilical cable. According to the suspended top type releasing and recycling device for the ocean robot, the underwater robot is moved to the position close to the water surface or below the water surface by arranging the horizontal track and the vertical track, and the problem of safe releasing and recycling of an ultra-deep water working-stage robot in a limited cabin space is solved.

The invention is suitable for the technical field of traveling block hook testing, and provides a testing device for a traveling block hook and a testing method thereof.The testing device comprises a mounting assembly used for providing rigid support for the whole device and a testing assembly arranged on the mounting assembly, the test assembly is used for applying a simulation load to the hook assembly of the traveling block, the detection assembly is arranged on the mounting assembly and is used for carrying out image acquisition on the hook assembly of the traveling block, and the test assembly comprises a clamping unit and a load simulation unit which are oppositely arranged from top to bottom. The clamping unit comprises a suspension oil cylinder, a first hinge structure and a fixing seat, the load simulation unit comprises a load oil cylinder and a second hinge structure, a friction effect equivalent load is introduced through an equivalent load model, the defect that the friction force of a drilling tool is neglected in an existing test is overcome, the test load better fits the actual drilling working condition, and the test efficiency is improved. The accuracy of a detection result is improved.

The invention belongs to the field of electric power facility maintenance equipment, and particularly relates to an automatic pulley capable of passing through a barrier of double split conductors, which comprises a support, a pulley, a pulley block, a pulley block and a pulley block, and is characterized in that the support comprises four vertical rods which are symmetrically arranged; the number of the walking assemblies is four, the walking assemblies are arranged above the vertical rods, each walking assembly comprises a cross-shaped rod, L-shaped plates are fixed to the four ends of each cross-shaped rod, U-shaped grooves are formed between the L-shaped plates and the cross-shaped rods, rolling wheels are arranged in the U-shaped grooves, and center shafts are fixed to the sides, away from the cross-shaped rods, of the rolling wheels; and a first belt wheel is arranged on the central shaft. Obstacle crossing is achieved in the mode that the cross-shaped rod drives the rolling wheels to turn over, through the height compensation assembly, in the obstacle crossing process, the fluctuation degree of the support is reduced, support jolt is relieved, and the extending length of the electric push rod is flexibly changed by detecting the sag angle of the bearing cable through the total station; the friction force between the roller and the load-bearing cable is flexibly changed according to the sag angle of the load-bearing cable.

The present invention discloses a pulley that is easy to disassemble and assemble, which includes a hook assembly, a locking assembly and a buckle assembly, wherein the hook assembly includes a left side wall, a right side wall, and a hook arranged between the left side wall and the right side wall; the locking assembly is arranged in the left side wall, including a locking cavity, a limiting buckle arranged in the locking cavity, and a spring connected to the limiting buckle; and the buckle assembly is connected to the locking assembly, including a locking rod and a locking ring sleeved on the locking rod; the hook (103) is sleeved on the outside of the locking rod; the radial diameter of the inner wall of the locking cavity is the same as the radial diameter of the locking rod, and a limiting cavity is further provided on the inner wall of the locking cavity; the easy-to-disassemble and assemble pulley of the present invention can conveniently disassemble, replace and reassemble the hook, so that the pulley can meet more diverse usage requirements, and the sleeve rod can be disassembled and assembled by simply pushing, which is easy to operate, has lower learning cost, is suitable for the structure of most pulleys, and has a wide range of applications.

A tackle special for a top drive device comprises a vertical rail A and a vertical rail B. The vertical rail A and the vertical rail B are connected with each other, and relates to the field of oil exploration, a sliding device is arranged on the vertical rail A, the vertical rail A and the vertical rail B are in sliding connection, the sliding device and the top drive device are connected, the sliding device and the top drive device are fixedly connected, and the sliding device comprises a vertical frame and a transverse frame. The left end and the right end of the transverse frame are each connected with a set of vertical frames, the vertical frames are perpendicular to the transverse frame, the vertical frames are connected with the vertical rails B in a sliding mode, meanwhile, the vertical frames are further connected with the top drive device in a fixed mode, and the transverse frame is connected with the two sets of vertical frames to form a buckled state. The top drive device can be perfectly buckled to the vertical rail A or the vertical rail B through the locking device, meanwhile, the vertical rail A or the vertical rail B is locked through the guiding device, the vertical guiding function of the top drive device can be achieved, the locking function can be achieved, the top drive device is prevented from falling off, the service life of the top drive device is longer, and meanwhile use is safer.

The utility model provides replacement equipment. The replacement equipment comprises two frame bodies arranged side by side, each frame body comprises a stand column, a first cantilever beam and a second cantilever beam, the stand columns are arranged in the height direction and detachably connected to the top of a supporting structure used for installing to-be-maintained equipment, and the first cantilever beams and the second cantilever beams are arranged in the length direction and detachably connected to the top of the supporting structure; the two sides of the stand column are connected in the length direction; the transverse rail is arranged in the width direction, and the two ends of the transverse rail are connected with the two first cantilever beams respectively; the first pulley assembly is arranged on the transverse rail in a sliding mode and used for being connected with equipment to be maintained; one end of the second pulley assembly is slidably arranged on the first cantilever beam along the height direction, and the other end is fixedly connected with the cross rail; and a counter weight matched with the weight of to-be-maintained equipment can be hung on the second cantilever beam. And by arranging the frame body structure of the replacement equipment, the hoisting difficulty is reduced, and the replacement cost is saved.

The invention discloses a cable laying pulley load performance test device, and belongs to the technical field of pulley performance test. The sliding rails are symmetrically arranged, the placement platform and the bottom baffle are in sliding fit, the detection assembly is located above the placement platform, the placement platform is used for bearing a tackle, the bottom baffle is used for auxiliary supporting, and the detection assembly is used for applying a vertical load. According to the pulley load performance test device for cable laying, by adjusting the relative positions of the placement platform and the bottom baffle plate on the slide rail, supporting and fixing spaces of cable pulleys with different sizes and structural forms can be flexibly adapted; the special-shaped tackle has the advantages that the special-shaped tackle is matched with the lockable sliding block and the self-centering structure, so that the technical problems that the special-shaped tackle is difficult to fix and the loading center deviates are solved, the lateral displacement or overturning of the tackle when the tackle is pressed is effectively limited, and the stability and safety of load performance detection and the accuracy of data are improved.

A lifting device capable of changing the taking height of a component material box is used for transporting installation materials on an automobile production line, relates to the technical field of design and manufacturing of material transporting box storage devices on the automobile production line and comprises a feeding unit, a discharging unit and a returning device. The feeding unit and the discharging unit are arranged in a frame structure composed of a top frame and a bottom frame, and the returning device is arranged on one side of the frame structure. The feeding unit comprises a feeding linkage table, a handrail, a pulley assembly and a pull wire assembly, the discharging unit comprises a discharging box linkage table, a discharging box platform lifting pulley, a balancing weight, a pull wire assembly and a pulley assembly, and the discharging box linkage table is arranged on a vertical stand column of the frame structure in a sliding and sleeving mode through the discharging box platform lifting pulley; the weight of the empty component box and the weight of the full component box are balanced by means of descending of the empty component box and automatic ascending of the full component box, the component box on the bottom layer is automatically lifted to the height where a human body fetches components comfortably through the linkage platform lifting device, and manual operation is facilitated.

A side storage type pipe string conveying device, comprising: a drill string feeding arm (1) provided with a conveying slide groove for conveying a pipe string; a conveying trolley (2) provided in the conveying slide groove and capable of pushing the pipe string to move in the length direction of the conveying slide groove; at least one storage module provided on the drill string feeding arm (1) and located on one side of the conveying slide groove, wherein the storage module comprises storage mechanisms (3), loading mechanisms (5), and kick-out mechanisms (6) which are provided on the drill string feeding arm (1), the storage mechanisms (3) are used for storing pipe strings, the loading mechanisms (5) can move the pipe strings stored in the storage mechanisms (3) into the conveying slide groove, and the kick-out mechanisms (6) can move the pipe strings in the conveying slide groove into the storage mechanisms (3). The side storage type pipe string conveying device can improve the conveying efficiency of a power catwalk.

The utility model relates to the technical field of tunnel construction equipment, and discloses a double-layer steel bar positioning device for tunnel construction, which comprises a door-shaped frame, a plurality of arched tracks and two power components, pulley assemblies are mounted on the arched tracks, and the power components are used for driving the corresponding pulley assemblies to reciprocate along the arched tracks. The adjacent pulley assemblies are connected through a cross beam, a plurality of pairs of positioning plates are fixed to the cross beam in the extending direction of the cross beam, and two limiting rods are installed between the same pair of positioning plates. The utility model has the beneficial effects that the inner and outer reinforcing steel bars pulled to the top of the door-shaped frame are inserted into the gap between the positioning plates, then the insertion ends of the reinforcing steel bars are fixed with the anchor rods embedded into the ground, and finally the pulley assembly is started, so that when the pulley assembly moves to the other side along the arched track, the reinforcing steel bars are bent to be arc-shaped; finally, after the other end of the steel bar bent into the arc shape is fixed, positioning of the double-layer steel bar is completed, and the labor intensity of workers in the construction process is low.

The invention provides a side storage type pipe column conveying device, and relates to the technical field of oil drilling development, and the side storage type pipe column conveying device comprises a drill column feeding frame body, which is provided with a conveying chute for conveying a pipe column; the transportation tackle is arranged in the transportation sliding groove and can push the pipe column to move in the length direction of the transportation sliding groove; the at least one storage module is arranged on the drill column feeding frame body and located on one side of the conveying sliding groove, the storage module comprises a storage mechanism, a loading mechanism and a kicking-out mechanism which are arranged on the drill column feeding frame body, and the storage mechanism is used for storing pipe columns; the loading mechanism can move the pipe columns stored in the storage mechanism into the conveying sliding groove. The kicking-out mechanism can move the pipe columns in the conveying sliding groove into the storage mechanism. According to the side face storage type pipe column conveying device, the conveying efficiency of a power catwalk can be effectively improved.

The invention discloses a curtain electric tackle, a curtain track and a curtain tackle track set, and relates to the technical field of curtain opening and closing equipment, the curtain electric tackle comprises a driving element, a gear transmission assembly, a walking element, a limiting element and a hooking element, the power output end of the driving element is connected with the power input end of the gear transmission assembly, and the power output end of the gear transmission assembly is connected with the hooking element; the power output end of the gear transmission assembly is connected with the walking element, the walking element is connected with the hanging element and used for walking in a curtain rail, the lower end of the hanging element is used for stretching out of the curtain rail and being connected with one side of the upper end of a curtain, and the limiting element is connected to the hanging element and used for limiting the hanging element. The limiting element is electrically connected with the driving element, and the limiting element can control the driving element to stop driving when the hooking element moves in place. The curtain electric tackle, the curtain track and the curtain tackle track set are simple in structure, long in service life and low in manufacturing cost.

The utility model discloses a large cantilever bent cap bottom die sliding device. The large cantilever bent cap bottom die sliding device comprises a bent cap body, a bent cap bottom die, a pulley and a suspension assembly. The cover beam body is formed above the cover beam bottom die in a pouring mode. A sliding rail is integrally poured above the capping beam main body; the pulley can slide on the slide rail; the bent cap bottom die comprises a plurality of split bottom die units; the suspension assembly is provided with a suspension rod and a lifting driving piece, and the lifting driving piece can suspend the bottom die unit through the suspension rod. By the adoption of the mode that the sliding rail, the tackle and the suspension assembly are embedded in the bent cap, the bottom die unit can be suspended and slid to a closed construction area to be disassembled, the construction step that hoisting operation is directly carried out above a traffic lane is avoided, the difficulty and occupied space of disassembling the large cantilever bent cap bottom die can be reduced, and the construction efficiency is improved. And the influence on the normal passing of social vehicles due to interference is prevented, so that the safety risk level is reduced.

A drilling control system may access a drilling plan for a borehole comprising one or more of planned path for the borehole, drill string information, mud properties, drill bit properties, formation properties, and drill rig properties. The system may receive a plurality of operating parameters from a rig for the borehole including one or more of an observed toolface, a spindle setting, a rate of penetration, a differential pressure, and a weight-on-bit. The system may receive one or more propagation functions for the borehole determined by a model of the drill string. The system may determine one or more spindle changes or block speed changes based at least in part on the propagation functions and the plurality of operating parameters. The system may generate one or more predicted drill properties from a simulator using the one or more spindle changes or the one or more block speed changes.

The invention relates to the technical field of power transmission line construction, in particular to a power transmission line wire laying construction method which comprises the steps of dividing a wire laying section and arranging a tension field and a traction field. A paying-off tackle is hung; the second guide rope is unfolded in a one-traction-three traction unfolding mode; the traction rope is unfolded in a one-traction-one traction unfolding mode; the lead is spread in a one-traction-two traction spreading mode, and efficient and safe spreading of the six-split large-cross-section lead is achieved through the six-split large-cross-section lead spreading device.

The invention relates to an elevator, in particular for a motor vehicle, comprising at least one lane (2); two legs (4, 4 ') hinged to the at least one lane (2) and each leg (4, 4') consisting of a single arm; at least one actuator (18, 18 ') associated with each leg (4, 4') and configured to vary the inclination of each leg (4, 4 ') with respect to the horizontal so as to raise and lower the at least one lane (2); and a synchronous control unit of all the actuators (18, 18 '); characterized in that: the two legs (4, 4 ') hinged to the at least one lane (2) are arranged symmetrically with respect to the transverse median plane of the elevator; -the lower end of each leg (4, 4 ') is hinged to the base (8) in connection with a fixed transverse shaft (10) to be anchored to the floor; -the upper end of each leg (4, 4 ') is articulated to the respective lane (2) by connecting to a transverse axis (12, 12') which is connected to a trolley (14) sliding along the lane itself; the upper end of each supporting leg (4, 4 ') is hinged to two sliding frames (14); the two carriages (14) are connected to each other by a pair of flexible traction elements (22, 22 ', 22' '), each traction element being connected to the two carriages (14) at the ends and each traction element being returned by a respective transmission member (24, 24') idling mounted on the lane (2), all of which generally define a substantially closed ring-shaped structure such that, as the inclination of the legs (4, 4 ') varies, the traction elements (22, 22', 22 '') are driven by the respective transmission member (24, 24 '). Each lane (2) is translated longitudinally towards the legs that are at this time slightly inclined with respect to the horizontal plane.

A top drive drilling device relates to the field of petroleum drilling and comprises a drilling platform, a derrick is mounted on the drilling platform, a traveling block is assembled on the derrick, a top drive system is further movably mounted in the vertical direction of the derrick, and an adjusting component and an elevator component are further assembled on the top drive system. Secondly, by means of the elevator assembly, when the drill rod needs to be connected, the adjusting assembly can rapidly adjust the position of the elevator assembly, the drill rod is automatically checked through the driving plate arranged in the shape of the Chinese character'ba ', the two bushings are opened in a linkage mode, and when the drill rod is completely located in the bushings, the elevator assembly can automatically adjust the position of the elevator assembly; the drill rod can be locked through the dual effects of the locking disc and the pre-tightening spring, so that the elevator assembly works more stably; and the interior of the lining is gradually expanded from bottom to top, the drill rod is prevented from integrally falling down in the receiving or pulling-out process, and finally abrasion caused in the drill rod entering and exiting process can be avoided through the pin rollers.

The invention relates to the technical field of guide mechanisms, and discloses a translation mechanism which comprises two longitudinal rails parallel to each other and a tackle arranged between the two rails, and a longitudinal rolling groove is formed in the side, facing the tackle, of each rail; the pulley comprises a frame and two wheel sets arranged on the two sides of the frame respectively, the two wheel sets correspond to the two rolling grooves respectively, each wheel set comprises at least three wheels which are sequentially arranged in the longitudinal direction, the wheels are all rotationally connected with the frame, and the wheels are located in the corresponding rolling grooves respectively. When the pulley moves longitudinally, the wheels roll along the rolling grooves, and the rolling friction force is very small, so that the resistance is very small when the workbench moves, and the movement is more flexible. Even if dust enters the rolling groove, the wheel rolls in the rolling groove, so that abrasion to the edge of the wheel is very small and can be almost ignored, and the service life of the wheel is prolonged.

The utility model discloses a quick detachable pulley, including first baffle, second baffle, a plurality of first pulley assembly, a plurality of second pulley assembly, quick detach assembly, first baffle, second baffle is vertically left and right and is placed, a plurality of first pulley assembly all are from front to back array rotation connection between the lower end of first baffle and second baffle, a plurality of second pulley assembly all are from front to back array rotation connection between the upper end of first baffle and second baffle, the left side of a plurality of second pulley assembly all with the left side rotation connection of first baffle, a plurality of second pulley assembly right side and second baffle fixed connection, quick detach assembly is fixed in the top of first baffle and second baffle. The utility model has the advantages of convenient rope through pulley, and the wide use scene.

The present invention discloses a cylindrical foundation hole internal steel bar binding corrector and its application method. The corrector includes an inner ring guide rail, an outer ring guide rail, a pulley, a main steel bar fixture, and a pulley positioning fixture. The inner ring guide rail and the outer ring guide rail are concentrically arranged and connected into one body through radial connecting members. The pulley can slide along the inner ring guide rail and the outer ring guide rail simultaneously. The main steel bar fixture is connected to the pulley in a radially movable manner. The pulley positioning fixture can lock the two ends of the pulley. After the main steel bar passes through the pulley and the main steel bar fixture, it is locked by the main steel bar fixture. It can ensure the control of the elevation difference, spacing, and diameter of the main steel bar when the main steel bar is suspended, and complete the binding of the inner and outer stirrups in the lifted state, which can ensure that the steel reinforcement cage has high verticality, uniform joints, and is neat and beautiful after binding. It can also meet the binding requirements of steel reinforcement cages with different designed diameters, different specifications, and different numbers of main steel bars, and can be applied to various situations where the foundation types of overhead lines are diverse and the pile diameters, main steel bar specifications, and quantities are not unified.

The invention relates to a drilling and repairing integrated iron roughneck which comprises a spinning clamp assembly, a floating assembly, a C-shaped frame, a punching clamp assembly, a centering clamp assembly, a telescopic arm assembly, a lifting pulley and a stand column. The spinning clamp assembly is movably installed at the top of the C-shaped frame through the floating assembly, the punching clamp assembly and the centering clamp assembly are arranged in the C-shaped frame, and the punching clamp assembly is located above the centering clamp assembly; one end of the telescopic arm assembly is rotatably mounted on the lifting pulley, the rotating axis of the telescopic arm assembly is transversely oriented, the C-shaped frame is rotatably mounted at the other end of the telescopic arm assembly, and the rotating axis of the C-shaped frame is transversely oriented; the lifting tackle is installed on the stand column in an up-down moving mode. The floating assembly can drive the spinning clamp assembly to float up and down so as to perform displacement compensation on the pipe in the vertical direction when the spinning clamp assembly performs spinning, and the floating assembly has the beneficial effects that the displacement of the pipe in the vertical direction when the spinning clamp assembly performs spinning is effectively compensated, so that the risk of pipe thread damage is reduced, and the sealing integrity and the structural stability of pipe connection are improved.

The invention discloses a soft lock device of a traveling block type drill string heave compensation system, which is characterized in that the on-off of a high-pressure pipeline of a compensation cylinder of a compensation device is controlled through a pneumatic control ball valve, an angle actuator, a proximity switch and a pneumatic control electromagnetic valve, and the pneumatic control electromagnetic valve and the angle actuator are controlled through a control box, so that the pneumatic control ball valve is controlled; the control box achieves the function that a driller remotely monitors the locking state of the upper frame and the lower frame of the compensation device by displaying the feedback of the displacement sensor of the locking oil cylinder, achieves the purpose that the compensation cylinder of the compensation device is locked to hover at any position by combining the feedback of the position sensor in the compensation cylinder, and improves the drilling operation efficiency.

The utility model discloses a reciprocating passenger cableway suitable for indoor amusement scene, comprising: the near end steel frame and the far end steel frame of keeping preset interval, drive arrangement, install on the near end steel frame and the far end steel frame, including motor, the first transmission part and the second transmission part of motor drive and the traction belt of closed loop setting, and the traction belt is around the first transmission part and the second transmission part, the load part includes the trolley main body and the suspension basket, and the traction belt both ends fixed connection trolley main body, the load cable is fixed respectively on the near end steel frame and the far end steel frame on both ends, and the trolley main body cooperates and guides the load part moving path, replace traditional steel wire rope through the traction belt, and its elastic property can effectively absorb the vibration energy in operation, reduce the noise of metal friction and resonance generation, satisfy the low decibel mute demand of indoor amusement scene, and the drive arrangement cooperates the transmission mode of traction belt, need not special tool to dismantle replacement, shorten maintenance time, improve maintenance efficiency.

A ladder trolley includes a trolley frame having an upper end longitudinally spaced apart from a lower end. The trolley frame has longitudinally extending laterally spaced apart first and second side flanges; webbing connecting the first and second side flanges; and a ladder travel channel extending from the upper end to the lower end. The channel is defined by at least the first and second side flanges and the webbing and is open at the upper and lower ends. The ladder trolley includes at least one pair of ladder side rollers moveably connected to the trolley frame. Each pair of ladder side rollers has first and second ladder side rollers being laterally moveable and resiliently biased laterally into the channel. The ladder trolley includes a payload support connected to the trolley frame exterior to the ladder travel channel.