1143 results about "Fixed hinge" patented technology

The invention discloses a claw beam lifting mechanism for a forging manipulator, applied to forging industry. The claw beam lifting mechanism mainly comprises a front lifting part, a rear lifting part, a synchronous connector rod, a lifting cylinder, a pitching cylinder and a buffering part, a front fixing shaft in the front lifting part, a rear fixing shaft in the rear lifting part and the lower end of the lifting cylinder are respectively connected with a large machine frame through hinges, the synchronous connecting rod is arranged overhead and always moves in a range above a connecting line of a front fixing hinge point and a rear fixing hinge point of a claw beam lifting and pitching mechanism and the large machine frame, front ends of two buffering cylinders are respectively connected with tow front lifting connecting rods through hinges, the rear ends of the two buffering cylinders are respectively articulated with two ends of a compensating beam, and the middle part of the compensating beam is connected with the middle part of the large machine frame by a hinge through a beam fixing shaft. The claw beam lifting mechanism has novel and scientific design concept, reasonable stress application, high movement precision, simple structure, low manufacturing cost and is convenient to install, adjust and maintain. The invention not only reduces the manufacturing cost of the lifting mechanism under the condition of ensuring the movement precision, but also thoroughly solves the problems that the front fixing shaft and a shaft sleeve matched with the front fixing shaft are worn easily and a side plate of a machine needs to be thickened specifically.

The present invention relates to a cross-type robot driving articulation based on the shape memory alloy, which has a main structure of a Hooke joint mechanism comprising a fixed hinge mount 1, a cross 6, and a movable hinge mount 7. Four pulleys 5 are respectively fixed on the four shaft shoulders of the cross 6. The four shaft shoulders of the cross 6 are respectively arranged into the circular aperture of the side wall of the fixed hinge mount 1 and the movable hinge mount 7. Four ropes wind on the four pulleys 5 respectively, and each of the two ends of each rope are connected with a SMA spring 3, the other end of the SMA spring is connected to the hinge mount which is positioned at the same side as the spring. The present invention simplifies the structure and the control unit, reduces the error, improves the degree of freedom and the rigidity of the articulation, and improves the combined property of the robot.

The invention discloses a pipeline underwater robot detection device which comprises an underwater robot. The underwater robot comprises a rising propeller and a rear horizontal propeller, a front-facing camera is arranged on the underwater robot, and an umbrella-type fixing support is fixed on a pressure chamber and comprises a camera, a fixing hinge knot, a strut, a push bar and an optical fiber; the fixed hinge knot is fixing on the outer wall of the pressure chamber, one end of the strut is hinged to the pressure chamber through the fixing hinge knot, and the push bar is a telescopic bar with one end hinged to the outer wall of the pressure chamber and the other end hinged to the strut; the camera is fixed in the middle of the strut, power supply and data transmission of the camera are transmitted through the optical fiber, and a pulley is arranged at the top end of the strut. Close-range photographing can be performed on pipelines by the aid of opening and closing angles of the support, problems that water-filled pipelines underwater or with different pipe diameters cannot be observed in details, position offset and the like can be solved. The pipeline underwater robot detection device is simple in structure, convenient to use and clear in observation.

Hinge having a fixed hinge leaf and a moving hinge leaf, each leaf being provided with at least one pivot bearing and a hinge pivot common to the hinge leafs. The hinge pivot is in the form of a hollow pivot. The hollow pivot is connected non-turnably with the moving hinge leaf and is located turnably in the pivot bearing of the fixed hinge leaf. A torsion spring is located in the hollow pivot, whose torsional force acts in one direction of hinge movement, the hollow pivot and the torsion spring being adapted to be inserted as a single component into the pivot bearings of both hinge leafs. The torsion spring is located in the hollow pivot in a pre-tensioned state so as to constitute a force-actuated connection with an inner wall of the hollow pivot.

The invention discloses a bending torsion test loading device for a steel tube concrete pile. According to the bending torsion test loading device for the steel tube concrete pile, two problems that the bending moment condition is not ideal and simple, and the rotation of the steel tube concrete pile is not ideal when the torque is applied in a previous bending torsion test are solved. The bending torsion test loading device comprises two tension jacks, tension sensors, a connection joint, steel wire ropes, round groove discs, a fixed hinge support, a sliding hinge support, two counterforce pillars and rotation supports, wherein the rotation supports are mounted on the fixed hinge support and the sliding hinge support respectively; the two tension jacks are mounted on the outer sides of the two counterforce pillars respectively and located on different sides of the round groove discs on two ends of the steel tube concrete pile; the top ends of the tension jacks are provided with the tension sensors; the tension sensors are connected with the steel wire ropes which are wound on the round groove discs through connection joints. Due to the adoption of the bending torsion test loading device for the steel tube concrete pile, bending torsion test results of the steel tube concrete pile fit with finite element analysis results well. Meanwhile, the bending torsion test loading device for the steel tube concrete pile also has the characteristics of convenience in assembly and recyclability.

The invention discloses a device for testing a limited soil mass rigid retaining wall soil pressure model. The device comprises a model box, loading systems, a retaining wall and a measuring system. Toughened glass is fixedly embedded in the side face of the model box, and a rigid cushion block is welded to a model box base plate. A reaction frame is arranged on the loaded side, and eight groups of clamping steel blocks are welded to a frame. The two loading systems which can work independently are installed on the reaction frame and connected with a movable retaining wall through a fixed hinge support, and fixed boundaries are installed on the specific clamping steel blocks according to the earth filling width requirements. A micro soil pressure box is embedded in the retaining wall, and a dial gage is installed at the rear of the movable retaining wall. A digital camera is placed in front of the side face of the model box. Different earth filling widths, wall soil contact surfaces and retaining wall displacement and shifting modes are simulated, changes of active or passive soil pressure are monitored, and a soil mass displacement field and slip crack faces are studied. According to the device for testing the limited soil mass rigid retaining wall soil pressure model, effective test data support can be provided for studying the soil pressure problems on the conditions of limited soil mass, and help is provided for a follow-up theoretical analysis model.

The present invention relates to open-close equipment for a door of a refrigerator wherein a pair of doors are provided and opened or closed individually or integrally at a time. The open-close equipment of the present invention comprises right and left doors 60 and 70 for opening and closing each storage space 52 defined in a main body 50 of the refrigerator; a fixed hinge 62 provided at a right end of the right door 60 and serving as a pivot center of the right door 60; and a movable hinge 72 provided at a left end of the right door 70 and serving as a selective pivot center of the right door 70. Further, the right and left doors 60 and 70 are either pivoted individually on the fixed and movable hinges 62 and 72, respectively, or pivoted integrally and simultaneously on the fixed hinge 62 such that the doors are opened and closed. According to the present invention so configured, there are advantages in that convenience of use of the refrigerator is improved and electric power consumption is reduced.

The invention adopts the dowel pressing process, presses the metal screw into the center hole of the plastic dowel, the outer diameter of the screw is slightly larger than the diameter of the center hole of the dowel, and utilizes the elastic deformation and plastic deformation of the plastic dowel to make the screw and the dowel Tightly combined, so that it is firmly fixed on the fixed pocket of the hinge, and at the same time, the quantitative oil injection process is adopted to automatically inject the lubricating grease into the lubricating point quantitatively. The automatic assembly equipment of the present invention includes a dowel grasping mechanism, a dowel vibrating feeding mechanism, a dowel pre-installing mechanism, a screw vibrating feeding mechanism, a grease injection mechanism, a movable clamp cycle stepping and carrying mechanism and a microcomputer control system. Action sequence is controlled by microcomputer control system. The invention realizes the fully automatic assembly of dowel pre-installation and oil injection process, improves the assembly production efficiency and ensures the assembly quality.

The invention discloses a small-size self-centering one-way loading biaxial tension-compression test device. The device is characterized by comprising a loading transmission device and a combined type framework, wherein the combined framework is composed of a main framework 1 and a suspension framework 2, the loading transmission device comprises transverse loading shafts (12 and 13), vertical loading shafts (10 and 15), inclined rigid rods (9, 11, 14 and 16), transverse sliding rods (3 and 7), sliding connectors (4 and 8), stepping motors (5 and 6), fixing and sliding dual-use hinged supports (23 and 24) and fixing hinged supports (25 and 26). According to the small-size self-centering one-way loading biaxial tension-compression test device, the function of biaxial tension and compression can be achieved by means of one-way loading; and simultaneously, problems that the fluctuation process that the center of a test piece is deviated and goes back to the center of the loading device happens in the test process always and the test piece is difficult to clamp and adjust are solved.

The invention provides a bilateral double-spring driving unfolding mechanism. The unfolding mechanism comprises moving hinges, fixed hinges, concentric shafts, volute spiral springs, spring blocks, spring outer end covers, spring inner ring fixing sleeves, spring outer ring fixing shafts, spring outer ring fixing sleeves, spring outer ring fixing sleeve pressing covers, locking hooks, locking hook rotating shafts, locking hook locating sleeves, locking hook locating torsional springs, locking hook locating torsional spring pressing rods, limiting screws and a microswitch. The fixed hinges and the moving hinges achieve connection and a relative rotating function through the concentric shafts, four sets of bilateral plane volute spiral springs act on the fixed hinges and the moving hinges at the same time, the locking hook locating torsional pressing rods are matched with the locking hook locating torsional springs to enable locking shafts at the tail ends of the locking hooks to slide into the bottom faces of bosses on sliding rails of the fixed hinges, so that locking locating is finished, and meanwhile the microswitch is triggered to send a successfully arriving signal to a control system. The bilateral double-spring driving unfolding mechanism is relatively simple in achievement form, achieves a driving source redundant backup function, and is light in weight, compact in structure, high in reliability and strong in bearing capacity under the same driving capacity.

There is provided a slide hinge device for guiding a slide of a slide part on a main part. The slide hinge device includes: a slide hinge unit installed in the rear of the slide part, for guiding a slide of the slide part; a fixed hinge unit installed in the front of the main part; and a lift hinge unit rotatably installed to the fixed hinge unit and engaged with the slide hinge unit to guide a slide of the slide hinge unit. In the case the slide part is opened, the lift hinge unit rotates to the fixed hinge unit and raises the slide part to be slanted towards the main part, thereby enabling a microphone and a receiver of a personal portable device to be close to the mouth and an ear of a user, respectively.

The invention provides an autonomous circular launching and landing device for an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle systems. By using the autonomous circular launching and landing device, the unmanned aerial vehicle can carry out catapult-assisted taking-off, net-collision landing, posture adjusting and intermediate conveying. By using the autonomous circular launching and landing device, the unmanned aerial vehicle can launch and land in an unattended operation manner or in a severe environment, so that the automation degree of the unmanned aerial vehicle system is further improved. The autonomous circular launching and landing device comprises an elastic ejection mechanism, a landing mechanism and a posture adjusting and conveying mechanism, wherein the elastic ejection mechanism comprises a supporting mechanism, an ejection sliding track mechanism and an unmanned aerial vehicle carrier; the supporting mechanism consists of a triangular rack and a fixed hinged support; the ejection sliding track mechanism consists of a linear guide track, a spring, a rope, a pulley block, a sliding track supporting plate and a driving mechanism; the driving mechanism consists of a first driving motor, a wheel shaft, a magnetic switch, a belt wheel and a belt; and the posture adjusting and conveying mechanism comprises a posture adjusting mechanism, a primary conveying mechanism and a secondary conveying mechanism.

The present invention discloses a grill, comprising an upper shell, a lower shell and a hinge mechanism for controlling the relative position of the two shells; the hinge mechanism comprises a first hinge unit and a second hinge unit; the first hinge unit comprises a rotating shaft, and the rotating shaft comprises a horizontal shaft connected to the upper shell and a vertical shaft connected to the lower shell; the second hinge unit comprises a fixed hinge part on the lower shell and a detachable hinge part on the upper shell, and the detachable hinge part is removablly hinged to the fixed hinge part. Compared to the conventional technique, the upper shell and the lower shell could be easily arranged side by side when they are opened to 180°, and the upper grill pan and the lower grill pan are near to the user so that the grill is easy to operate and is designed humanized.

A knob structure of a glove box for a vehicle according to an exemplary embodiment of the present invention includes: a push-type knob unit which is coupled to a glove box by a first fixed hinge, and operated by being pushed; a pull-type knob unit which is coupled to the glove box by a second fixed hinge, and operated by being pulled; and a rod unit which is connected to the push-type knob unit and the pull-type knob unit, and converts rotational motion by an operation of the push-type knob unit or the pull-type knob unit into rectilinear motion so as to open and close the glove box.

A molded clip for closing bags and the like includes a pair of claws with a latch and a hinge at opposed ends. The hinge extends rearwardly from the jaws and includes a hinge bearing with a rearwardly facing opening of restricted diameter thereto. The other jaw includes a fixed hinge pin which may be snap engaged into the bearing by resilient passage through the opening. Where the jaws are relatively large, they may be provided with cooperating shoulders that restrict axial movement of the jaws under reactively generated forces. In accordance with one embodiment, one of the jaws is double sided, and the clip may be assembled with either of these sides confronting the other jaw to provide different clip functions.

The invention belongs to the technical field of building installation, in particular to a prestressing method for installing a large-span double-layer latticed shell structure, which comprises the following steps of: firstly, assembling one initial segment of a latticed shell on the ground, fixing one end of the initial segment on a support at one side through hinging, and hanging the other end with a crane; and assembling member bars by steps to extend till the support at the other side of a single latticed shell structure toward the other side of the support. The length of each extension segment equals to the length of 3-4 standard member bars. Whenever the latticed shell is extended by assembly, steel wire ropes are used for connecting the fixed hinge support and installed latticed shell tail nodes, and a prestressing force is applied so that the latticed shell and the steel wire ropes form a structure similar to a beam string structure. The installation method can avoid setting up a high altitude platform so as to increase working efficiency and reduce construction cost, and can also ensure construction safety.

The invention belongs to the technical field of aerospace spaceborne antennas and particularly relates to an unfolding release device of a rod antenna. According to the technical scheme, the unfolding release device comprises the rod antenna (3), a compression release mechanism (2) and an unfolding locking mechanism (1); the compression release mechanism (2) comprises an installation base (201), a compression base assembly (202), a swing frame (203), an installation frame (204), a limiting supporting plate (205), a locking reed (206), a compression screw (207) and a pyrotechnic cutter (209); the unfolding locking mechanism (1) comprises an installation frame (101), a fixed hinge support (102), a volute spring (103), a limiting block (104), a locking leaf spring (105) and a rotating hinged head (106). According to the unfolding release device of the rod antenna, the rod antenna (3) can be unfolded to a fixed angle and can be effectively locked before and after the release.

The invention relates to a hinging mechanism for multi-section connection of an urban low-floor rail vehicle. A multi-section low-floor vehicle is connected by the hinging mechanism formed by a fixing hinge, an elastic hinge, a free hinge and oil pressure dampers, and requirements of a vehicle passing through a small-radius horizontal curve and a vertical curve are met when the transmission requirement of a traction force and braking force of the vehicle is met. The hinging mechanism has the advantages that the fixing hinge is matched with the elastic hinge and the free hinge up and down, so that the vehicle can pass through the small-radius horizontal curve and the vertical curve when transmitting the traction force and the braking force; and the elastic hinge and the free hinge can guarantee the stability of the vehicle in a straight line because the elastic hinge and the free hinge are assisted by the oil pressure damper at the two sides. The hinging mechanism has simple structure, reliable operation and convenient disassembly, replacement and maintenance and can effectively solve the problem in connecting and marshalling the multi-section urban low-floor rail vehicle.

The invention relates to a high-redundancy beam-string truss structure and an implementation method. The high-redundancy beam-string truss structure comprises an upper string truss, a plurality of stay bars, a plurality of stay ropes, a fixed hinged support and a sliding hinged support, wherein the upper string truss is a positively arranged triangular cone space arch truss formed by mutually connecting a plurality of upper string truss rod pieces; two ends of each stay rope are connected with two spherical joints at the lower part of the upper string truss at an interval, and parts of the plurality of stay ropes are alternatively arranged; the plurality of stay bars are vertically connected among the lower part of the upper string truss and the plurality of stay ropes at intervals; the upper end of the fixed hinged support is connected with the spherical joint at the lower part of one side of the upper string truss, and the lower end of the fixed hinged support is arranged on a supporting structure on one side of the upper string truss in a fixing manner; and the upper end of the sliding hinged support is connected with another spherical joint at the lower part of the other side of the upper string truss, and the lower end of the sliding hinged support is arranged on a supporting structure at the other side of the upper string truss in a sliding manner. The high-redundancy beam-string truss structure and the implementation method have the advantages of high structure redundancy, good collapse resistance, simplicity and convenience in construction, excellent safety and the like.

The invention discloses a device for changing a route range of a jogged positioning platform. The device is composed of a base, a variable magnification time lever, a composite parallel four-rod guiding mechanism and a movable platform. Two parallel grooves are arranged below the base and two piezoelectric ceramic drivers are respectively placed in the respective grooves; the variable magnification time lever is downwards arranged in the middle of the base; and output hinges arranged at the upper part of the variable magnification time lever are hinged with the middle parts of two parallel flexible hinge parts and respectively enable two input hinges of the lower part of the variable magnification time lever to be contacted with the two piezoelectric ceramic drivers through a pre-fastening screw. The variable magnification time lever is provided with a fixed hinge to be connected with the base; and the two input hinges can independently receive input displacements of the piezoelectricceramic drivers to transmit the amplified displacements to the movable platform, and an output displacement of the platform has two route ranges, so that a composite route range function with a smallroute and a high precision or low precision requirements and greater route requirements are realized.