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46results about How to "Good self-locking performance" patented technology

Active electric power-assisting circulation ball type steering system

The invention relates to an active electric power-assisting circulation ball type steering system, comprising a steering column tube assembly, a screw rod moving device, a circulation ball type steering device, an electric power-assisting device and an automatic control module. A steering column tube is connected with the upper part of a screw rod of the circulation ball type steering device through a sliding spline, and the electric power-assisting device is connected with the lower part of the screw rod through a sliding spline; the screw rod moving device is sleeved on the screw rod; the screw rod has two motion freedoms; a freedom of rotating around the axis is controlled by a steering wheel; and the other freedom of moving along the axis is controlled by a screw rod moving control motor; a steering nut is moved by overlapping the effects of rotation and axial movement of the screw rod, so that a transmission ratio of the steering system is changed in real time, and the active steering is intervened. The steering system not only can meet the requirements on lightness and high sensitivity at a low-speed steering process and on stable operation at a high-speed steering process, but also has the characteristics of security, compact structure, low cost and the like. The active electric power-assisting circulation ball type steering system is applicable to a medium/light passenger bus and a lorry.
Owner:曾忠敏

Clamping device of tensile testing machine suitable for plate-shaped samples

ActiveCN103969119AAmplified locking effectWith self-locking effectStrength propertiesMachineTensile testing
The invention relates to a clamping device of a tensile testing machine suitable for plate-shaped samples, belonging to the technical field of the high-end manufacturing equipment industry and material testing machines. The clamping device comprises a worm gear and worm contraction mechanism, a connecting rod amplification mechanism and a wedge clamping mechanism, wherein the worm gear and worm contraction mechanism adopts a special worm gear with two-way internal threads to drive connecting rods on two sides to contract, the connecting rod amplification mechanism pushes a wedge clamping block to move downwards, and finally the effect of clamping a sample is achieved. The clamping device has the amplification principle of the connecting rod mechanism and the self-locking effect of the wedge mechanism at the same time and can ensure the firm tensile clamping force. The clamping device has the advantage of being simple in structure, adopting a self-centering type clamping way and being suitable for a tensile test for plate-shaped samples being 0.5-5mm in thickness. The special worm gear mechanism with two-way internal threads is adopted for driving connecting rods, so that the clamping torque can be further amplified, and the reliable connecting self-locking performance is provided.
Owner:JILIN UNIV

Quick disassembling machine for nuts for automobile wheel hubs

The invention belongs to the technical field of automobile dismantling, and particularly relates to a quick disassembling machine for nuts for automobile wheel hubs. The quick disassembling machine comprises a base. A driving mechanism is arranged on the upper surface of the base, a gas barrel and a support rod are fixedly connected with the upper surface of the base, a shell is slidably connectedonto a side wall of the gas barrel and is fixedly connected with the base by a lifting mechanism, a side wall of the shell is slidably connected with the gas barrel, a lifting plate which is horizontally arranged is slidably connected into the shell, and a gas bag is fixedly connected with the lower surface of the lifting plate and is communicated with the gas barrel via a gas guide pipe. The quick disassembling machine has the advantages that the nuts for the automobile wheel hubs can be quickly disassembled by the quick disassembling machine in a labor-saving manner; a pedal can be treaded,a piston can be driven by a pull mechanism and a reset mechanism to move in the gas barrel in the up-down directions, gas can be inflated into the gas bag, and accordingly the lifting plate can ascend; a plurality of nut sleeves can be driven by first transmission mechanisms and second transmission mechanisms to rotate, and accordingly the multiple nuts can be simultaneously disassembled; bull gear transmission can be driven by a movable pulley and pinions, and accordingly labor-saving effects can be realized.
Owner:TAIZHOU VOCATIONAL & TECHN COLLEGE

Stepless stroke adjusting disconnecting switch electric device transmission mechanism

ActiveCN104282454ARealize the measurement function of displacementRealize the function of displacement self-testContact driving mechanismsSwitch power arrangementsMiniaturizationEngineering
The invention discloses a stepless stroke adjusting disconnecting switch electric device transmission mechanism which comprises a supporting frame, a motor, a straight gear, a speed reduction device, a screw nut, a bevel gear deviator, a four-bar mechanism, a horizontal power output shaft and a vertical power output shaft. Through a specially-designed mechanical stopping board device and the nut in a screw nut device, a disconnecting switch electric device can be locked in the moving process, and the installation positions of stroke switches installed adjacent to a baffle are modified so that stepless stroke adjustment of the disconnecting switch electric device can be achieved. The transmission mechanism is high in rotating speed, capable of being used for a disconnecting switch with the coincide bus current conversion capacity, stable and adjustable in speed, and capable of being mechanically locked, preventing the stroke from exceeding the limit and making the disconnecting switch turned off and on in place accurately and rapidly. The transmission mechanism is simple, good in reliability, convenient to operate and repair and high in efficiency, and compared with products on the market, the miniaturization characteristic of the mechanism is obvious.
Owner:WUHAN UNIV

Intelligent rubber tensile testing device and testing method thereof

The invention belongs to the technical field of rubber industry, particularly relates to an intelligent rubber tensile testing device and a testing method thereof, and aims to solve problems that thereplacement process of a sample is complicated and an internal sample clamp needs to be disassembled and assembled for multiple times, two ends of the rubber sample need to be tightly clamped and fixed in the testing process, and clamping parts are always broken firstly in the tensile process, and thus the testing result is inaccurate. According to the scheme, the device comprises a base, a supporting shell is fixedly installed at the top of the base, a partition plate is fixedly installed in the middle of the inner wall of the supporting shell, and a testing rotating shaft is installed at thebottom end of the interior of the supporting shell through a bearing. When a rubber strip sample is subjected to tensile detection, the impact inertia of parts at the two ends can be effectively reduced when the rubber strip is broken, the displacement of the fixing seats at the two ends is controlled more accurately, cracks and tensile states on the surface of the sample can be observed more visually in the tensile test process, and the accuracy and safety of a detection result are improved.
Owner:SHEN ZHEN SQUARE BOTTLE CO LTD

Stacking machine

The invention discloses a stacking machine. The stacking machine comprises a base, a portal frame mechanism, an object carrying table mechanism and a lifting driving mechanism, and the base is provided with a walking mechanism; the portal frame mechanism is mounted on the base; the object carrying table mechanism is mounted on the inner side of the portal frame mechanism and can ascend and descend relative to the portal frame mechanism; the lifting driving mechanism is in transmission connection with the object carrying table mechanism to drive the object carrying table mechanism to move up and down, and comprises a driving assembly and a transmission part connected with the driving assembly and the object carrying table mechanism; a broken rope detection mechanism and an anti-falling mechanism are arranged on one side, away from the portal frame mechanism, of the object carrying table mechanism; the broken rope detection mechanism is fixedly connected with the transmission part; and the anti-falling mechanism comprises a triggering assembly and a locking assembly, the triggering assembly comprises a lever mounted on the locking assembly, an elastic assembly connecting the first end of the lever and the locking assembly, and a connecting rod assembly connecting the first end of the lever and the broken rope detection mechanism. The stacking machine is good in safety.
Owner:SAFE RUN & HISCENT MACHINERY SUZHOU

Mortise and tenon type scaffold inclined strut system

InactiveCN104790641ASafe and reliable structureGood force transmission performanceBuilding scaffoldsMortise and tenonLocknut
The invention discloses a mortise and tenon type scaffold inclined strut system. The system comprises a short threaded rod connecting inclined strut and a long threaded rod connecting inclined strut which is arranged to intersect with the short threaded rod connecting inclined strut, and the long threaded rod connecting inclined strut is located at the outer side of the short threaded rod connecting inclined strut; short threaded rods which are perpendicular to the short threaded rod connecting strut penetrate through the upper end and the lower end of the short threaded rod connecting inclined strut respectively, a tenon I is fixedly connected with the inner end of the short threaded rod, the tenon I is assembled in a corresponding central mortise groove plugging seat, and a locking nut I is connected with the outer end of the short threaded rod; long threaded rods which are perpendicular to the long threaded rod connecting inclined strut penetrate through the upper end and the lower end of the long threaded rod connecting strut respectively, a tenon II is fixedly connected with the inner end of the long threaded rod, the tenon II is assembled in a corresponding central mortise groove plugging seat, a locking nut II is connected with the outer end of the short threaded rod, and a limiting nut is connected to the middle of the long threaded rod; the short threaded rod connecting inclined strut and the long threaded rod connecting inclined strut are connected through a central connecting screw at the intersection. The system can be matched with a mortise and tenon scaffold, the bearing capacity and safety of the entire scaffold are enhanced, and a mortise and tenon type scaffold system is improved.
Owner:TIANJIN UNIV

High-precision eccentricity eliminating focusing mechanism suitable for universal optical system

The invention discloses a high-precision eccentricity eliminating focusing mechanism suitable for a universal optical system. The device is specifically characterized in that a rotating disc fixing seat is fixedly mounted on a substrate flat plate; a rotating disc is rotationally arranged on the rotating disc fixing seat; at least three thrust bearing seats and three springs are connected to a lens seat in the circumferential direction; each thrust bearing seat is provided with one bearing; the bearings abut against wedge surfaces of wedge blocks; the wedge blocks are fixedly connected to therotating disc; the springs are further connected with the rotating disc fixing seat, and the springs are in a stretching state all the time; at least three elastic sheet fixing columns are fixed on the rotating disc fixing seat along the circumferential direction of the rotating disc fixing seat; one end of each elastic sheet is fixed at the top of the corresponding elastic sheet fixing column, and the other end of each elastic sheet presses the upper end face of the lens seat. According to the invention, micro compensation is carried out on image quality change caused by insufficient measurement precision of the refractive index, the spherical radius, the lens thickness and the air interval in the optical system.
Owner:ZHEJIANG UNIV

Clamp type self-lock equipment

The invention discloses clamp type self-lock equipment which comprises a housing, a connecting rod transmission structure and a component force transmission structure, wherein the housing is provided with a fixed housing wall and a movable housing wall; the connecting rod transmission structure comprises a rocker arm, a steering connecting rod, a horizontal connecting rod and a horizontal sleeve, wherein one end of the rocker arm is connected to the outer wall of the fixed housing wall opposite to the movable housing wall; one end of the steering connecting rod is connected to the rocker arm, and the other end is movably connected with the first end of the horizontal connecting rod; the horizontal connecting rod is sleeved with the horizontal sleeve; the horizontal sleeve is fixed on the outer wall of the fixed housing wall opposite to the movable housing wall; the component force transmission structure comprises a scissor connecting rod, a movable clamp and a braking component, wherein one end of the scissor connecting rod is movably connected with the movable clamp, and the other end is movably connected with a second end of the horizontal connecting rod through a rotating shaft; and the braking component is fixedly connected to the end part of the movable clamp. Therefore, the clamp type self-lock equipment has a more reliable self-lock effect.
Owner:CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD

A mechanical folding attic open and close on both sides

The invention discloses a two-sided opening and closing mechanical folding attic, which belongs to the field of building attics. The opening and closing type mechanical folding attic on both sides of the present invention, the attic is designed as a two-sided opening and closing structure of two sets of interlayer half-frames. On the two uprights, the inner sides of the half-frames of the partitions are respectively installed horizontally on two guide beams, and the driving mechanism is used to drive the outer lifting movement of the two sets of half-frames of the partitions to control the movement of the two sets of half-frames of the partitions. The rectangular frame structure is folded vertically to both sides or horizontally aligned inward to form a compartment. After the attic is folded, the half-frame of the compartment is stored on the left and right sides, which does not occupy the space in the height direction, and overcomes the disadvantages of the lift-type attic , and the structure of the two sets of compartment half-frames is simple and stable, the control of the unfolding and folding of the attic is convenient, and the operation is flexible; moreover, the driving mechanism for unfolding and folding of the attic is simple to manufacture, the transmission is stable and reliable, and the overall production cost is low.
Owner:CHANGZHOU INST OF TECH

A rubber tensile intelligent testing device and testing method thereof

The invention belongs to the technical field of the rubber industry, in particular to a rubber tensile intelligent testing device and a testing method thereof. The replacement process of the sample is cumbersome, and the internal sample fixture needs to be disassembled many times. Secondly, during the testing process, the rubber The two ends of the sample need to be tightly clamped and fixed. During the stretching process, the clamped part is often broken first, resulting in inaccurate test results. The following scheme is proposed, including the base, and the top of the base is fixedly installed with a support shell. In addition, a partition is fixedly installed in the middle of the inner wall of the support housing, and a test rotating shaft is installed at the inner bottom of the support housing through a bearing. The present invention can effectively reduce the impact inertia of the parts at both ends when the rubber strip is broken when performing tensile testing on the rubber strip sample. Secondly, the displacement control of the fixing seats at both ends is more accurate, and it can be more intuitive during the tensile test process. It can accurately observe the surface crack and tensile state of the sample, and improve the accuracy and safety of the test results.
Owner:SHEN ZHEN SQUARE BOTTLE CO LTD
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