11results about How to "Reduce contact force" patented technology

A detachable fastener includes a fastening cylinder and a fastening pin. The fastening cylinder includes a cylindrical portion and a stop head. The stop head is provided with at least two separation grooves. The stop head has a stop ring arranged at the end of the cylindrical portion and extending along the central axis of the cylindrical portion. The fastening pin includes a stop section. The stop section has at least one groove for clamping the stop ring. The groove has a contact surface for contacting the stop surface. The contact surface has a profile line which forms an angle with the central axis of the fastening cylinder smaller than the angle between the profile line of the stop surface and the central axis of the fastening cylinder, so that the stop surface and the contact surface are in line contact. The detachable fastener is used in such a way that the stop surface and the contact surface are in line contact instead of surface contact, so that the detachable fastener is achieved.

The invention relates to a six-degree-of-freedom underactuated parallel variable-stiffness platform which mainly structurally comprises a six-degree-of-freedom industrial robot and a parallel variable-stiffness robot, and the parallel variable-stiffness robot is mainly composed of a lead screw sliding block linear actuator, a variable-stiffness branch chain, a fixed bottom plate, a movable platform and a baffle. Wherein the three lead screw sliding block linear actuators and the three variable stiffness branched chains are core mechanisms. Movement of the six-degree-of-freedom underactuated parallel variable-stiffness platform is achieved through large structural deflection of the flexible connecting rods, and due to passive Cartesian flexibility generated by inherent elasticity of the flexible connecting rods, contact stiffness can be changed, so that contact force is reduced, assembly deviation is treated in time, and the service life of the six-degree-of-freedom underactuated parallel variable-stiffness platform is prolonged. Reliable multi-task assembly tasks of the robot are efficiently completed, a robot controller adopts a rigidity / motion hybrid control method, expected force can be obtained, and expected directional deformation is achieved.

The invention discloses a novel three-phase imbalance compensation device which comprises a three-phase imbalance compensation structure, a displacement structure, a fine adjustment structure and a heat dissipation structure, and clamping of a telegraph pole by a main clamping plate and an auxiliary clamping plate is completed through threaded connection of a second screw and a nut. Then a first screw rod is rotated clockwise to be matched with a pressing ring to drive one side of a gasket to increase the contact force with the bottom frame, so that the length of the sliding arms on the two sides is fixed, a third screw rod is rotated anticlockwise to be loosened, the outer side of the outer frame is held, fine adjustment on the horizontal position of the outer frame is carried out in cooperation with a U-shaped second limiting hole, and after the outer frame is finely adjusted to the needed horizontal position, the outer frame is fixed. The outer frame is connected with the distribution box, so that the shaking amplitude generated by the three-phase imbalance compensation device when the three-phase imbalance compensation device is hoisted in an outdoor environment and then is butted with the distribution box can be effectively reduced, and the efficiency and the stability during installation are improved.

The utility model relates to the technical field of cooking equipment, and provides a packaging structure, a packaging assembly and a cooking equipment assembly.The cooking equipment comprises an equipment body, a door body and an outer frame, the door body is arranged on the front side of the equipment body, the outer frame is arranged on the periphery of the door body, the packaging structure comprises an annular shell and a protection plate, and the annular shell is provided with a containing groove and a mounting opening; the mounting opening penetrates through the front side of the accommodating groove to correspond to the outer frame, and the cooking equipment is arranged in the accommodating groove; the protection plate is arranged at the installation opening. According to the packaging structure of the cooking equipment, the packaging assembly and the cooking equipment assembly, stress deformation of the outer frame can be reduced.

The present invention relates to the field of cutting technology, specifically to a fixed-length cutting device for thermally conductive silicone sheets, comprising: a frame fixedly connected to a machine body; a mounting frame slidably connected to the front and rear sides of the frame, an opening being arranged on the mounting frame on one side facing the frame; a spring A fixedly connected between the mounting frame and the frame; a processing knife slidably connected to the opening of the mounting frame, at least five processing knives being arranged on the front and rear mounting frames; and a spring B fixedly connected between the processing knife and the mounting frame. The present invention solves the problem of residual debris affecting the cutting knife by arranging a processing knife to process the residual debris on the cutting knife, thereby improving the cutting quality of the thermally conductive silicone sheet of the present invention; the present invention divides the processing range of the processing knife into parts, reduces the influence of the reaction of the residual debris on the processing knife, ensures the processing effect of the processing knife, and enables each processing knife to be replaced independently, thereby reducing the maintenance cost.

An electric wire with terminal (1) includes an electric wire (2) including a conductor (3) and an insulating layer (4) covering the conductor (3), and a terminal (5) including a hollow portion (7) into which the conductor (3) exposed at an end portion of the electric wire (2) is inserted. The terminal (5) is connected to the conductor (3) by compressing the hollow portion (7) with the conductor (3) being inserted into the hollow portion (7). A tensile strength of a material used for the conductor (3) is greater than a tensile strength of a material used for the terminal (5). The terminal (5) includes at least three compressed portions (10) in a longitudinal direction of the conductor (3). When a cross-sectional area of the conductor (3) is S (mm2), a compression width which is a length in the longitudinal direction of the compressed portion (10) is W (mm), and a compression interval which is a length in the longitudinal direction of a non-compressed portion (11) located between adjacent compressed portions (10) is L (mm), the compression width W and the compression interval L, respectively, satisfy formulas (1) and (2): 0.01×S+2.5≤W≤0.07×S+3.5 and −1.0≤L≤0.145×S+3.75

The invention relates to the technical field of ball valves, in particular to an air cooler ball valve which comprises a valve body, a valve ball is rotatably connected to the inner wall of the valve body, a flexible sealing assembly is fixedly connected to the valve ball, a valve rod is fixedly connected to the valve ball, a handle is installed at the top end of the valve rod, and an inflation positioning assembly is fixedly connected to the lower portion of the handle. An adjusting assembly is arranged on the outer wall of the inflation positioning assembly in a sliding fit mode, two limiting sleeves are arranged on the valve body, the flexible sealing assembly is arranged on the valve ball, after the valve ball stops rotating, the adjusting assembly can drive the inflation positioning assembly to automatically inflate an annular air bag in the flexible sealing assembly, the annular air bag is made of a flexible material, and therefore the sealing effect is improved. After being inflated, the valve ball can be tightly attached to the gap between the valve ball and the valve body, self-adaptive sealing is achieved, the sealing reliability is further improved, the problems of unstable system pressure and out-of-control flow caused by medium leakage can be effectively solved, and the operation efficiency of the air cooler is ensured.

The present invention belongs to the field of engine hood detection, and provides a multifunctional engine hood inspection tool, including a workbench, a support frame is fixedly connected to the workbench, and positioning mechanisms capable of horizontally positioning the engine hood are arranged on both sides of the support frame, a sliding seat is slidably connected to the inner top surface of the support frame, and a driving component for driving the sliding seat to move horizontally is arranged on the support frame, and the sliding seat is fixedly connected to a lifting rod that can be lifted vertically, and the telescopic end of the lifting rod is fixedly connected to a fixed plate, and the end of the fixed plate is fixedly connected to a dust removal mechanism, and the dust removal mechanism is connected to a sensing component. In the present invention, when the pressure value of the pressure sensor exceeds the preset pressure threshold in the processing module, the control module controls the driving rod to contract, reduces the abutment force between the No. 4 spring and the box body, and avoids deformation of the contact pin and the raised part of the engine hood.

This invention relates to the field of visual inspection technology for sealing rings, specifically to an optical inspection device and method for sealing rings based on internal support rotation. The device includes: a stepping rotating frame with multiple tensioning structures connected to each tensioning structure, and a detection drive wheel with a recessed portion in the center of each drive wheel; a visual inspection module for inspecting the sealing ring tensioned by the drive wheel; the visual inspection module can perform multiple inspection actions on the sealing ring, and the traction structure, in conjunction with a guide groove, allows the sealing ring to be twisted at a certain angle, repositioning it so that it faces the inspection module, allowing the visual inspection module to perform inspection actions again, ensuring a more comprehensive inspection of the sealing ring and improving the inspection effect.

The invention discloses a coal mining filling and transporting device which comprises a bottom plate, two side plates are fixedly connected to the upper side of the bottom plate, two roll shafts are rotationally connected between the two side plates, a conveying belt is in transmission connection with the two roll shafts, and the two ends of each roll shaft penetrate through the side walls of the side plates. A mounting plate is fixedly connected to the side wall of the side plate, a motor is fixedly connected to the upper side of the mounting plate, and an output shaft of the motor is fixedly connected with one end of a roller shaft. A plurality of vertically staggered magnet plates are arranged to fully unload and slowly descend coal gangue to guide the coal gangue to roll onto a conveying belt, so that smooth connection of mineral aggregate transfer is realized, the contact impact force between the conveying belt and mineral aggregate is reduced, and meanwhile, an electrostatic dust collection effect can be generated by utilizing induced current generated by cutting magnetic induction lines through vertical vibration of the magnet plates; a large amount of dust generated during feeding of the coal gangue is collected and treated, and the situation that the dust escapes into air and pollutes the environment is avoided.

The invention discloses a water level detection emergency broadcasting device which comprises a mounting frame fixedly mounted at the top of one side of a water level dam, a supporting frame is fixedly mounted at the top of the mounting frame, and a supporting disc is fixedly mounted at the top of the supporting frame. According to the invention, the emergency loudspeaker broadcast work can be automatically started, so that residents can take preventive measures in advance or evacuate emergently after being notified by the broadcast, and the situation of flood hidden dangers caused by rising of water level can be effectively prevented; the adjustment of the circumferential direction of the emergency loudspeaker broadcast body and the adjustment of the left-right elevation angle position of the emergency loudspeaker broadcast body can be carried out at the same time, so that the range of the emergency broadcast can be expanded, and the situation that some resident address positions cannot be notified by broadcast due to remote places can be effectively prevented; therefore, the emergency situation that the water level rises can be spread to each resident home more efficiently, the limitation that the emergency broadcast range is small in the past is greatly reduced, and popularization and use are facilitated.