634 results about "Torsional Forces" patented technology

The invention belongs to the technical field of fluid control, and relates to a rotary flow distribution adjusting device and method for aviation. Comprising an inlet shell, an annular impeller, a torsion spring, a valve element, a magnetic damper and an outlet shell. The flow distribution adjusting device is arranged at the pipeline branch position of a liquid pipe network branch system, fluid flows through the annular impeller, the annular impeller generates torsional force to drive the valve element to rotate to change the overflowing sections of the two outlets, continuous adjustment of the flow distribution proportion of different branches is achieved, and the larger the fluid flow speed is, the larger the stress of the annular impeller is. And the valve core is driven to select a larger angle to correspond to different outlet flow distribution conditions. According to the flow distribution adjusting device, the complexity of an adjusting system can be reduced, the flow resistance caused by flow distribution adjustment is reduced, and then the energy consumption of a power source in a liquid system is reduced.

The disclosure relates to an assembly (1) for providing a fastening possibility for a vehicle component to a body component (11). The assembly (1) includes a connecting element (2) and a retaining element (3). The retaining element (3) includes a base body having a retaining region (4), and the connecting element (2) includes a base body having a receiving region (5), in which at least the retaining region (4) of the retaining element (3) is received in a rotatable manner relative to the receiving region (5) about an axis of rotation. The assembly (1) can be transferred from a pre-assembly or deliverable state into an assembled state. In the pre-assembly or deliverable state of the assembly (1), the retaining element (3) lies in a first rotational position relative to the receiving region (5) of the connecting element (2) counter to a torsion torque serving as a biasing force and exerted by a biased torsion spring (6) on the retaining element (3), wherein, in the assembled state of the assembly (1), the retaining element (3) lies in a second rotational position that is different from the first rotational position. Due to an external pulse or trigger exerted on the retaining element (3), the assembly (1) can be transferred from its pre-assembly or deliverable state into its assembled state. When the assembly (1) is transferred from its pre-assembly or deliverable state into its assembled state, the retaining element (3) is at least partially transferred into the second rotational position due to the force of the torsion spring (6).

The invention relates to the technical field of bridge construction, and discloses a bridge prestress tensioning device which comprises a prefabricated box girder, a plurality of tensioning assemblies are arranged on the prefabricated box girder, and the tensioning assemblies are used for applying tensioning force to the prefabricated box girder. The tensioning assembly comprises a corrugated pipe, a fixing clamping block, a first limiting block, a conical clamping sleeve clamping piece, a steel strand, a protective outer cover, a hydraulic driving assembly, a spiral fixing strip, a grouting hole, a second limiting block and a protruding block, and the spiral fixing strip arranged on the conical clamping sleeve clamping piece is in a spiral shape matched with the twisting direction of the steel strand; in this way, when the hydraulic driving assembly abuts against the second limiting block, the conical clamping sleeve clamping piece can exert certain twisting acting force on the steel strand, and therefore the fixing stability of the steel strand is enhanced, and the situation that in a traditional mode, when a clamping piece sleeve with the smooth inner wall is used for fixing, the clamping piece sleeve cannot be fixed easily is avoided. And the problem that the steel strand is difficult to fix stably for a long time due to single clamping force is solved.

A multi-shaft tightening device comprises a device input shaft 10 and a plurality of tightening heads 11, the device is provided with a plurality of transmission units 20, each transmission unit is provided with a first unit output shaft 21, a second unit output shaft 22 and a unit input shaft 23, and the unit input shaft 23 drives the first unit output shaft 21 and the second unit output shaft 22 to rotate. The first unit output shaft 21 and the second unit output shaft 22 of one transmission unit drive the unit input shaft 23 of the other transmission unit or drive the tightening head 11. According to the multi-shaft torque transmission device, the transmission units of the three-shaft structures are adopted, the three shafts of the transmission units can be in associated transmission to form a chain type transmission structure, and the multi-shaft torque transmission device with one input shaft and the multiple output shafts is formed, the multiple output shafts can twist multiple operation objects at the same time, and twisting of the multiple operation objects can be output through one-time input rotating operation; the unscrewed bolts are prevented from being omitted, and the torsion strength of a plurality of torsion objects can be adjusted.

The invention relates to the technical field of composite robot component control, and discloses a composite robot multi-component compliance control method which comprises the following steps: performing deformation analysis on an image of a to-be-grabbed target to obtain the deformation degree of the to-be-grabbed target; target control parameters of a mechanical arm in the composite robot are generated; a self-adaptive hydraulic impedance compliant control objective function is constructed, and hydraulic impedance parameters of the composite robot are obtained through calculation; and the torque of the composite robot is generated through the hydraulic impedance parameters, and torsional force adjustment is conducted on a mechanical arm in the composite robot. The deformation degree of the to-be-grabbed target is calculated based on the edge gradient change value of the continuous time image, the target control parameters for preventing the to-be-grabbed target from being deformed and completing the operation task as soon as possible are selected in a reinforcement learning mode and converted into the torque of the composite robot, the mechanical arm is subjected to torsional force adjustment, and the mechanical arm is controlled. The stability of force applied by the mechanical arms is improved, and compliant control over the multiple mechanical arms in the composite robot is achieved.

The utility model relates to a drill arm connecting mechanism for a drilling machine in the technical field of drilling machines, which comprises a bottom frame, a drill arm is correspondingly hinged to the top of the bottom frame, a telescopic device capable of adjusting the angle of the drill arm is correspondingly hinged between the bottom frame and the drill arm, and the drill arm connecting mechanism further comprises a locking assembly. The locking assembly comprises a supporting rod and a movable block, the movable block is slidably connected to the drill boom in the length direction, one end of the supporting rod is correspondingly hinged to the bottom frame, and the other end of the supporting rod is correspondingly hinged to the movable block; the locking assembly further comprises a locking piece capable of fixing the movable block to the drill boom. After the telescopic equipment adjusts the angle of the drill arm, the movable block can be fixed on the drill arm through the locking piece, namely, the angle of the drill arm is locked, at the moment, when a drill rod encounters a rock with high hardness, the drill rod can be blocked by the locking assembly in time when the torsional force of the drill arm is sharply increased, uncontrollable rotation of the drill arm can be effectively prevented, and the drill arm can be prevented from being damaged. And the safety coefficient is improved.

The invention relates to the technical field of power distribution cabinets, and discloses an anti-electric shock outdoor power distribution cabinet, which comprises a power distribution cabinet, a power-off switch arranged in the power distribution cabinet, a wiring groove arranged on the power-off switch, and a wiring terminal arranged in the wiring groove, the extension part is fixed below the power-off switch and corresponds to the wiring groove, an insulating strip is mounted on the extension part, a power connection fork is rotationally mounted at the top of the insulating strip through a torsional spring, the torsional spring applies torsional force away from the binding post to the power connection fork, and a wire penetrates through the power connection fork and extends out of the tail end of the power connection fork; an insulating wrapping layer is arranged on the top, away from the binding post, of the insulating strip. According to the invention, when the power is cut off through the power-off switch, the wire can be disconnected from the binding post, and the exposed part of the wire can be wrapped in an insulating manner, so that the risk that the exposed wire possibly carries residual current to cause electric shock to maintenance personnel in subsequent maintenance is avoided, and the potential safety hazard is reduced.

The present invention relates to the technical field of distribution cabinets, and discloses an anti-electric shock outdoor distribution cabinet, including a distribution cabinet, in which a power-off switch is installed. The distribution cabinet further includes: a wiring groove opened on the power-off switch, and a wiring post is arranged in the wiring groove; an extension part fixed below the power-off switch and corresponding to the wiring groove, an insulating strip is installed on the extension part, a power connection fork is rotatably installed at the top of the insulating strip through a torsion spring, and the torsion spring applies a torsional force to the power connection fork to move it away from the wiring post, and a wire is threaded through the power connection fork and extends from its end, and an insulating wrapping layer is provided at the top of the insulating strip away from the wiring post. When the power-off switch cuts off the power, the present invention can not only disconnect the wire from the wiring post, but also insulate and wrap the exposed part of the wire, avoiding the risk of electric shock to the maintenance personnel during subsequent maintenance caused by the residual current that the exposed wire may carry, and reducing potential safety hazards.

The invention discloses a metal hose quick-plug connector, which relates to the technical field of pipeline connection, and comprises a male connector and a female connector, at least three clamping pins which are arranged in a circumferential array around the male connector are fixed outside the male connector, a clamping ring which is rotatably clamped with the clamping pins is fixed outside the female connector, and a sealing ring is arranged between the male connector and the female connector. The locking mechanism comprises a sleeve connected to the interior of the female connector in a sliding mode, a positioning pipe is fixed to the male connector, the steel ball clamps the sleeve under the action of the elastic force of the spring, and rotation of the sleeve and the female connector relative to the male connector can be limited within the preset working torque range; therefore, excessive abrasion of an internal sealing ring caused by frequent rotation of the male connector and the female connector is avoided, sealing stability of the quick-plug connector is guaranteed, meanwhile, when torsional force borne by the male connector and the female connector exceeds a preset range, the male connector and the female connector can release torsional stress through relative rotation, and the metal hose is effectively prevented from being damaged due to excessive torsion.

The invention discloses an air spring with multiple bearings, an automobile suspension and an installation method.The air spring comprises a bearing installation base and a lower installation base, the lower installation base is arranged at the bottom of the bearing installation base, an automobile body installation base is arranged outside the bearing installation base, and a first bearing is arranged at the top of the bearing installation base; by the adoption of the air spring with the multiple bearings, the design requirement for bearing lateral force and torsional force of the air spring is met, and the sealing performance is reliable.

The invention relates to the technical field of experiments, in particular to an experimental method and system for testing the torsional rigidity of an aircraft tire, and is used for testing the yaw torsional rigidity of the aircraft tire under various conditions. The aircraft tire is accelerated to the target rotating speed, and then the vertical load is applied to the aircraft tire through the first oil cylinder. And finally, controlling the second oil cylinder to perform yaw torsion control on the aircraft tire according to the yaw torsion angle curve. And yaw torsion moment is collected in the yaw torsion control process. And finally, the torsional rigidity of the aircraft tire can be calculated through the torsional moment and the yaw torsional angle. According to the invention, different deflection angles can be tested under the conditions of different rotating speeds and loads, so that the corresponding torsional rigidity is obtained. In addition, a dynamic real-time stiffness model calculation method is adopted to apply the load, so that the load control is more accurate, and the safety of the aircraft tire is ensured at the same time.

The invention discloses a turnover hoisting device and method for steel pipe pile construction, and relates to the field of hoisting devices.The turnover hoisting device comprises a crane chassis, a cab is movably installed on the crane chassis, a seat is arranged in the cab, a hoisting arm is installed on one side of the cab, and a hoisting hook is installed on the hoisting arm; an emergency push-out device is mounted on the cockpit; and an automatic rotating device is mounted on the emergency push-out device. It needs to be explained that in the embodiment of the invention, through the arrangement of the emergency push-out device, when a steel pipe pile is hoisted for turning over operation, if the inclination angle of the crane chassis is large, the driving push frame drives the seat out of the cab through the sliding push plate, so that a driver can be separated from the cab in time, and meanwhile, under the torsional force of the rotating torsional spring, the driver can turn over the steel pipe pile. The seat is rotated on the supporting shaft, so that the seat is rotated to a state perpendicular to a cab, and a driver can face an open position, so that the driver can quickly escape.

A multi-axis tightening device comprises a device input shaft 10 and a plurality of tightening heads 11, the device is provided with a plurality of transmission units 20, each transmission unit is provided with a first unit output shaft 21, a second unit output shaft 22 and a unit input shaft 23, the unit input shaft 23 drives the first unit output shaft 21 and the second unit output shaft 22 to rotate, the first unit output shaft 21 and the second unit output shaft 22 of the transmission unit drive the unit input shaft 23 of another transmission unit or drive the tightening head 11. The application adopts a plurality of three-axis structure transmission units, the three axes of the transmission unit can be associated transmission, constitute a chain transmission structure, constitute a multi-axis torque transmission device of one input shaft and a plurality of output shafts, a plurality of output shafts can twist a plurality of operation objects at the same time, one input rotation operation can output the twist of a plurality of operation objects, avoid missing the bolt that is not tightened, and can adjust the twisting degree of a plurality of twisting objects.

Dome switches can provide inconsistent positive tactile feedback, particularly when depressed around the edges of a corresponding push button as compared to depression at the middle of the push button. Various arrangements intended to render push buttons that incorporate one or more dome switches more consistent in providing positive tactile feedback, while maintaining a reasonable ease and cost of manufacturing, are discussed herein. A push button with consistent edge performance using a single dome switch incorporates a hinge arm that spans button posts. This reduces or eliminates rotation deflection of a button cap caused by the torsional forces on the push button created by depression forces applied by the user at an edge of the push button. As a result, the dome switch provides a predictable and consistent positive tactile feedback to the user similar to that achieved by a centrally applied depression force.

The invention relates to the technical field of pressing rivet nut testing, in particular to a positioning structure for pressing rivet nut torsion testing, which comprises a pressing rivet nut testing, positioning and mounting disc, and a pressing rivet nut workpiece mounting table is fixedly mounted in the middle of the pressing rivet nut testing, positioning and mounting disc; the pressing rivet nut torque testing device has the beneficial effects that the pressing rivet nut workpiece mounting table is matched with the workpiece positioning structure, so that basic positioning and fixing of a pressing rivet nut torque testing workpiece can be achieved, the positioned and fixed workpiece is locked through the locking anti-falling structure, and a torque wrench is fixed through the torque wrench positioning structure; meanwhile, the locking anti-falling structure is in linkage with the locking anti-falling structure through an arc-shaped gear ring, a locking gear and a rack, when the pressing rivet nut is wrenched for torque testing and deflects, the triangular locking frame is reversely pushed for re-locking, position correction is conducted on deflection caused by too large torsional force, and the situation that a workpiece continues to loosen, and the nut torque testing result is affected is avoided.

The utility model discloses a multi-stage internal spiral pump driven by a hole type servo motor, which belongs to the technical field of spiral pumps, a stator is matched with a rotor to realize that the rotor drives a rotating sleeve to rotate in a mounting cavity, and when the rotating sleeve and the rotor synchronously rotate, a spiral cavity is formed between a spiral blade in a liquid conveying hole of an internal spiral sleeve and a core shaft; liquid flows from the liquid inlet hole to the circulation hole through the spiral cavity, and then flows to the liquid outlet hole from the circulation hole; the stator and the rotor of the motor, the rotating sleeve related to the screw pump, the inner spiral sleeve and the mandrel are integrated together to form the inner spiral pump of a special structure, the structure of the spiral pump is more compact, the size of the spiral pump is small, the spiral blades are arranged on the inner side wall of the liquid conveying hole of the inner spiral sleeve, and the rotor drives the rotating sleeve and the inner spiral sleeve to rotate. Compared with a conventional pump shaft, the inner spiral sleeve can bear larger twisting force, high-speed liquid conveying of the inner spiral pump is facilitated, and a high-speed high-pressure power source composed of a stator and a rotor can be adapted.

The invention discloses a vehicle frame type undercarriage in-situ turning moment measurement test verification device which comprises a bottom plate, a vertical module, a torsion module, an undercarriage and a measurement module. The vertical module comprises two triangular supports, a fixed beam, two sliding rails, two sliding blocks, a vertical hydraulic actuator, a loading seat and two connecting pieces; the torsion module comprises a bearing seat, a bearing, a rotating shaft, a torque sensor, two connecting rods and two torsion units, and each torsion unit comprises a fixing frame and a heading hydraulic actuator; the measuring module comprises two mounting plates and 2M measuring units. Each measuring unit comprises a force bearing seat, a six-dimensional force sensor and two flanges. The device can accurately measure the tire load and the torsional moment when the undercarriage turns in situ, is modularized, is easy to maintain and upgrade, can provide stable and reliable measurement data, and reduces the influence of external environmental factors.

The invention discloses an aircraft tire rigidity testing device and a testing method thereof, and belongs to the technical field of aircraft tire testing. The rigidity change characteristic of the aircraft tire is obtained by simulating the real loading condition of the aircraft tire. Comprising a test bed, a force measuring platform, a test piece, a flange, a force bearing wall, a vertical force loading mechanism, a lateral force loading mechanism, a longitudinal force loading mechanism and a torsional force loading mechanism, the force bearing wall comprises a first force bearing wall and a second force bearing wall which are arranged on the test bed and are oppositely arranged, and a flange for fixing a test piece is also fixedly arranged between the first force bearing wall and the second force bearing wall; and a vertical force loading mechanism, a lateral force loading mechanism, a longitudinal force loading mechanism and a torsional force loading mechanism are used for respectively applying a vertical force, a lateral force, a longitudinal force and a torsional force to the force measuring platform. According to the invention, the rigidity test of the aircraft tire is completed in a laboratory.

The invention relates to a self-adaptive variable-pitch blade which comprises a skin and a spar with anisotropy, the skin wraps the spar to form the blade, the thickness direction of the spar is arranged in the vertical direction, the width direction of the spar is arranged in the horizontal direction, and the thickness of the end, close to a blade root of the blade, of the spar is larger than the width of the end, close to the blade root, of the spar. When the rotating speed of the blades is changed, the bending moment force borne by the blades is also changed, under the action of the bending-torsion coupling effect, the wing spar can convert the borne bending moment force into torsion force, then the propeller pitch of the blades is promoted to be changed, synchronous change of the propeller pitch and the rotating speed of the blades is achieved, and the influence trends of the propeller pitch and the rotating speed on the flight state are the same; therefore, the flight state of the aircraft can be rapidly adjusted.

The present invention relates to a main hand force feedback mechanism of a vascular intervention robot, comprising a box body and a panel, wherein the panel is fixed on the box body, a control button is provided on the outer side of the panel, and a force feedback device is installed on the inner side of the panel, the force feedback device comprises a guide wire force feedback mechanism and a catheter force feedback mechanism, the guide wire force feedback mechanism and the catheter force feedback mechanism have the same structure and are symmetrically distributed; the guide wire force feedback mechanism comprises a driving wheel 1, a driven wheel 1, a belt 1 and a belt pressing mechanism 1, the guide wire forward and backward movement knob drives the driving wheel 1 to rotate, the driving wheel 1 drives the driven wheel 1 to move, the belt pressing mechanism 1 adjusts the degree of compression of the belt 1, thereby feeding back the compression force of the belt 1 to the torsional force of the driving wheel 1, and feeding back the force to the guide wire forward and backward movement knob through the driving wheel 1; the present invention maps the force conditions of the guide wire and the catheter in the blood vessel to the main end operating mechanism, restores the doctor's on-the-spot feeling during operation, thereby reducing the surgical risk and improving the surgical accuracy.

Disclosed are a window covering and a window covering operation mechanism. The window covering operation mechanism includes a driving connector fixed to a roller, a base, a torsional direction switching mechanism, a driving member, a driven member, a reversal cord, and a lift cord. When the reversal cord is dragged, the driving member is driven to rotate, whereby plural bumps of the driving member are guided by plural guiding rails of the base, making the driving member drive the driven member to move together while rotating. When the lift cord is dragged, the driven member is driven to rotate with respect to the driving member, driving the driving connector directly or through the torsional direction switching mechanism according to the position of the driven member for outputting a torsional force in the forward or reverse direction to the roller, thereby controlling retraction or extension of the window covering.

The utility model belongs to the technical field of detection equipment, and particularly relates to a clamping device for a torsion test of a plane piece. The clamping device comprises a frame part, a first clamping part and a second clamping part, the first clamping part is connected with the frame part, the second clamping part and the first clamping part are oppositely arranged, the second clamping part is rotatably connected with the frame part, the rotating axis of the second clamping part is arranged in the first direction, the first clamping part is used for being connected with one side of the plane part, and the second clamping part is used for being connected with the other side of the plane part. The second clamping part is used for being connected with the other side of the plane piece. According to the clamping device provided by the embodiment of the utility model, when a torsion performance test is carried out, the relative position between the first clamping part and the frame part is fixed and the second clamping part is rotated, so that a torsion force can be accurately applied to the plane piece, and the torsion performance of the plane piece is tested. And the testing flexibility and accuracy are also improved.

The invention relates to the technical field of transfer devices, in particular to a transfer device for bearing ring machining, which comprises a control box and a rotating frame, the rotating frame is rotatably arranged in the control box, the transfer device further comprises a winding device, a plurality of lifting ropes, a lifting hook, a top plate and an expanding and supporting mechanism, the winding device is arranged on the rotating frame, and the lifting ropes are annularly arranged on the rotating frame at intervals; the lifting hook is arranged below the lifting rope, the top plate is arranged under the rotating frame, the top plate is connected with the rotating frame through a top extension structure, the expanding mechanism is arranged on the bottom wall of the top plate, and the expanding mechanism can contract or expand in the radial direction of the top plate when the top plate moves up and down, so that the twisting force above the lifting rope is quickly transmitted to the lower side; according to the transfer device for bearing ring machining, when a bearing ring is quickly twisted to the angle needing to be adjusted, the top plate and the expanding and supporting mechanism eliminate inertia generated after the bearing ring is twisted, and therefore the efficiency of adjusting the placing direction during bearing ring transfer is improved.

The utility model discloses a filter, aiming at solving the technical problem that the internal sealing of a filter assembly fails. Comprising a shell assembly and a filter element assembly, a second pressing mechanism is arranged in the shell assembly, an inner pull rod assembly of the second pressing mechanism comprises an inner pull rod, an inner pull rod first end axial pulling structure and an inner pull rod second end axial pulling structure, and the inner pull rod first end axial pulling structure comprises a jacking sleeve, an inner pull rod first end locking nut and a jacking sleeve anti-torsion structure. The locking nut at the first end of the inner pull rod is assembled on the outer side of the shell assembly and connected with a corresponding screw section on the inner pull rod in a threaded fit mode or connected with a threaded hole in the shell assembly in a threaded fit mode, and the anti-torsion structure of the jacking sleeve comprises an isolation component pressed between the jacking sleeve and the locking nut at the first end of the inner pull rod. And the isolating component is easy to transmit axial force applied to the isolating component by the locking nut at the first end of the inner pull rod, but is not easy to transmit torsional force applied to the isolating component by the locking nut at the first end of the inner pull rod.

A dematerialized information handling system display stand supports a display assembly with vertical adjustments using a single injection molded polyoxymethylene (POM) sliding member inserted in an extruded aluminum riser. A compression spring locks the sliding member in place with torsional force that releases to enable vertical movement. A hinge member couples to the sliding member to accept a display support that extends out of the riser and couples to the display assembly. Vertical sliding movement is provided with an assembly that uses only one screw for ease of assembly and disassembly.

The invention discloses a fatigue testing device for a high-temperature alloy sealing spring for an aero-engine, relates to the technical field of spring fatigue testing, and aims to solve the technical problems that an existing fatigue testing machine is relatively single in testing content and is difficult to carry out fatigue testing on torsional force and bending force borne by the spring. A push-pull assembly and a reciprocating driving assembly are arranged at the top of the workbench, a positioning assembly is arranged between the push-pull assembly and the reciprocating driving assembly, an adjusting assembly is arranged at the bottom of the workbench, and the reciprocating driving assembly is used for applying reciprocating torsional force or reciprocating bending force to a test spring and carrying out torsional force fatigue test or bending force fatigue test on the test spring. The device has the advantages that an elastic force fatigue test, a torsional force fatigue test and a bending force fatigue test can be respectively performed on the test spring, and possible stretching, compression, torsion and bending forces of the test spring in practical application can be simulated.

The utility model discloses a handheld wireless exploder with a mistaken touch prevention structure, and relates to the technical field of exploders, the handheld wireless exploder comprises an exploder body, and the surface of the exploder body is provided with a mounting groove. When the detonation button drives the abutting column to slide, due to the fact that the positioning structure is not matched, the downward sliding distance of the abutting column is smaller than the distance between the movable trigger piece and the fixed trigger piece, detonation signals cannot be generated, the good mistaken touch prevention effect is achieved, the effect is stable and reliable, uncontrollable deformation caused by large external force is avoided, and supporting is more stable; and the elastic supporting piece has the functions of elastic supporting and torsional springs, so that the extrusion force and torsional force of mistaken touch can be absorbed, and the detonation button is not easy to rotate when mistaken touch occurs, so that the mistaken touch prevention effect of the handheld wireless detonator is improved, and the operation during detonation is simpler and more convenient.

The present disclosure describes sensor devices that can be readily integrated with prosthetic devices to provide sensing of force and torque applied to the prosthetic device during use. The sensor device includes an adaptor section that readily connects to standard prosthetic components and a base section. The base section has a deflectable portion and a fixed portion. Cantilevers in the deflectable portion house magnets and corresponding Hall effect sensors are housed in the fixed portion. When axial and / or torsional forces are applied, the cantilevers deflect relative to the fixed section and the Hall effect sensors provide a corresponding output that correlates to the axial and / or torsional forces applied.

The invention discloses a robot branched chain body torsional rigidity testing device and method, and the device comprises a horizontal iron which is used for movably connecting a torsional rigidity testing module and two bases; the two bases are respectively used for fixing the supporting module and the test connecting piece; the supporting module is used for slidably connecting and fixing a sliding block and a sliding rail of a tested piece; the test connecting piece comprises a shaft connecting piece and a branched chain body connecting piece which are coaxially connected; the branch chain body connecting piece is used for being coaxially connected with a tested piece, and the shaft connecting piece is used for being coaxially connected with the torsion module; the torsional rigidity testing module comprises a loading module, a torsion module, a measuring module and a controller; the loading module applies a load to the torsion module; the torsion module is rotationally connected with the shaft connecting piece and converts the load of the loading module into a torsion force on the tested piece; the measuring module is used for detecting the transverse and longitudinal displacement of the branched chain body connecting piece; the controller obtains the load of the loading module and the displacement detected by the measuring module. The torsional rigidity of the robot branched chain body can be tested.

The utility model discloses a power-off self-locking electric air-drop device, and belongs to the technical field of lifting hooks. Comprising a frame body, a lifting hook assembly is arranged in the frame body and comprises a pair of symmetrically-distributed lifting hooks, the lifting hooks are rotationally installed in the frame body, each lifting hook is provided with a lifting position and a releasing position in the movement stroke, each lifting hook comprises a lifting part and a driving part, the rotating directions of the lifting parts and the driving parts are opposite, and the driving parts can be relatively fixed through locking pieces. The locking piece is controlled by the electric driving piece, the locking piece is provided with a locking position and a loosening position on the movement stroke, the locking piece is used for fixing the driving part of the lifting hook when the locking piece is located at the locking position, and the locking piece is used for avoiding the driving part of the lifting hook when the locking piece is located at the loosening position. The automatic unhooking device has the advantages that through a brand new structural design, the bearing capacity of the automatic unhooking device is improved, the requirement for torsional force of an electric driving piece is lowered, the overall reliability of the device is improved, the power-off self-locking capacity is improved, and the risk that goods fall accidentally in the construction process of the dispenser is lowered.