8results about How to "Solve the limit problem" patented technology

The invention discloses installation equipment of an aluminum alloy conductor cable for photovoltaic power transmission, relates to the technical field of cable installation equipment, and aims to solve the problems that along with continuous enlargement of the scale of a photovoltaic power station and gradual improvement of technical requirements, a traditional installation mode is difficult to meet requirements, laying of the cable mostly depends on a large amount of manual dragging, and the mode is low in efficiency and high in cost. Due to the fact that wire sets of some cables are thick, weighing is large, and manual dragging difficulty is large, through cooperative operation of a fixed pulley, a movable pulley, a belt pulley and the like, the acting force direction is changed and the acting force is reduced according to the pulley block principle, the large-mass cables can be pulled more easily in a labor-saving mode, the labor intensity of workers is greatly relieved, and the working efficiency is improved. The stability and the reliability of paying-off operation are ensured, the paying-off efficiency and the construction quality of the photovoltaic power transmission aluminum alloy conductor cable are remarkably improved, and a powerful guarantee is provided for smooth promotion of related projects.

The utility model discloses a limiting mechanism for fixing a stator core, which relates to the technical field of stator core fixing and limiting, and comprises an annular shell, a plurality of heat dissipation holes are equidistantly arranged on the side surface of the annular shell in the vertical direction, the heat dissipation holes penetrate through the annular shell and are distributed on the equidistant side surface of the annular shell, and limiting grooves are arranged on the periphery of the annular shell. T-shaped grooves are formed in the inner sides of the limiting grooves in an inward penetrating mode, and the annular shells are fixed through clamping. According to the utility model, locking is carried out through the locking and fixing mechanisms among the annular shell, the annular bottom plate and the annular cover plate, so that the stator core on the inner side can be prevented from moving, the stability of the stator core is improved, the function of fixing the stator core can be realized, and a T-shaped groove formed in the inner side of the annular shell is clamped with a stator core plate, so that the stability of the stator core is improved. The stator iron core can be conveniently limited, the use efficiency of the stator iron core is improved, the function of limiting the stator iron core can be further achieved, and finally the problems of fixing and limiting the stator iron core are solved.

The utility model relates to the field of clamping of tensile testing machine, concretely relates to a kind of adjustable rectangular sample limiting device for tensile testing machine.A kind of adjustable rectangular sample limiting device for tensile testing machine is applied to upper clamp and lower clamp, including connecting base and limiting rod, the limiting rod is connected on connecting base by bolt;The side of the upper clamp, lower clamp is all provided with pin hole, the connecting base is provided with pin shaft, the pin shaft is inserted in the pin hole.The limiting rod is L type, including connecting portion and limiting portion, and long hole is provided on connecting portion;The top of connecting base is provided with clamping groove, and bolt hole is provided in clamping groove;The connecting portion is placed in clamping groove and detachably connected on the top of connecting base by bolt.The utility model reduces the clamping difficulty of rectangular cross-section sample, improves detection efficiency.

The invention relates to the technical field of silicon carbide furnaces. A furnace cover rotation limiting mechanism comprises a limiting mounting seat fixedly arranged relative to a furnace body, the limiting mounting seat comprises a fixing seat and a limiting pin, the fixing seat is connected with the limiting pin through a spring, and the top of the limiting pin is of a hemispherical structure; the limiting bracket is fixedly arranged relative to the furnace cover and moves synchronously with the furnace cover; the limiting support comprises a movable seat and a roller, the movable seat is rotatably connected with the roller through a rotating shaft, the movable seat comprises a mounting plate and a limiting plate which are arranged left and right, the roller is rotatably mounted between the mounting plate and the limiting plate, the lowest position of the roller is higher than the lowest position of the limiting plate, and the lowest position of the roller is lower than the lowest position of the mounting plate. The device is simple in structure, and locking of the unscrewed furnace cover is facilitated.

The utility model discloses an automatic carton packaging device, which belongs to the technical field of cartons and comprises a workbench, a connecting frame is arranged at one end of the workbench, a third motor is arranged at one end of the connecting frame, a third screw is coaxially and fixedly connected to the output end of the third motor, an adjusting frame is connected to the outer wall of the third screw in a screwed manner, and the adjusting frame is fixedly connected to the workbench. A second motor is arranged at one end of the adjusting frame, due to the fact that the third motor can control the rotating direction of the third screw, the third screw regulates and controls the moving direction of the adjusting frame, the second motor can control the rotating direction of the second screw, the second screw regulates and controls the moving direction of the driving frame, and in addition, the first motor can control the rotating direction of the first screw. According to the carton sealing device, the moving direction of the fixing frame is controlled through the first screw rod, the carton sealing device can be adjusted up and down, left and right and front and back, the position of the carton sealing device can be automatically adjusted, the problem that the carton sealing efficiency is low when carton packaging is conducted at present is solved, carton sealing is rapidly achieved, and practicability is improved.

The invention discloses a bicycle speed regulator, comprising a speed regulating ratchet, a shift-up push rod, a shift-down push rod and a limiting structure, wherein the limiting structure comprises a limiting member and a limiting spring, wherein the limiting member is provided with a raised limiting pawl; a driving pawl is provided on the rotating driving end of the shift-up push rod, and a release driving end of the shift-down push rod extends to a side of the limiting member away from the original position of the driving pawl; wherein a synchronous driving boss is provided at one end of the limiting member close to the original position of the driving pawl, and the shift-down operation end of the shift-down push rod is toggled to push the limiting member in the direction of the driving pawl, and the synchronous driving boss pushes the driving pawl to move synchronously with the limiting pawl in the direction of release, and respectively away from the outer ratchet groove and the inner ratchet groove. The bicycle speed regulator can not only solve the problem of the driving pawl limiting the speed regulating ratchet, but also eliminate the virtual stroke, so that the gear adjustment operation can be completed accurately and conveniently, and the user experience is improved.

This application discloses a hinge for a vehicle windshield protection assembly and the windshield protection assembly itself. The hinge includes a first hinge member and a second hinge member, which are rotatably connected via a pivot. The first hinge member is provided with a limiting member, and the second hinge member has a first limiting portion and a second limiting portion. When the second hinge member rotates relative to the first hinge member, it can selectively drive the first and second limiting portions to rotate around the pivot, so that either the first or second limiting portion can be selectively moved to a limited position. The limiting member moves relative to the first hinge member in a direction parallel to the pivot, so that it can selectively engage with the first or second limiting portion in the limited position. The hinge of this application realizes two limiting states, which can be applied to windshield protection assemblies, enabling them to maintain a stable shape in both open and closed states. The shape switching operation is simple and quick, and the structure is lightweight, meeting the needs of windshield protection assemblies.

The invention provides a system and method for dynamically regulating and controlling the limit size of a platform wall, by arranging a pull rope between the platform wall and a platform canopy column foundation, the problem of limit invasion in the operation and maintenance process of the platform wall is solved more conveniently, the system comprises a foundation pit, the pull rope, the canopy column foundation and the platform wall, and the canopy column foundation is arranged at the bottom in the foundation pit; the platform wall is arranged at the bottom in the foundation pit and located on the side, close to the train track, of the canopy column foundation. A concrete cushion layer is arranged at the bottom of the platform wall, a cushion plate assembly is arranged on the upper portion of the platform wall in the thickness direction, one end of the pull rope is fixed to the canopy column foundation, and the other end of the pull rope penetrates through the cushion plate assembly and then is fixedly connected to the outer side of the platform wall. The foundation pit is filled with backfill soil, and a platform plate is assembled at the top end of the foundation pit.