10results about How to "Prevent reverse movement" patented technology

This invention belongs to the field of pneumatic control valve technology, specifically providing a pneumatic shut-off valve. The invention aims to solve the problem of excessive noise during operation of existing pneumatic shut-off valves. To this end, the pneumatic shut-off valve of this invention includes a valve body assembly, a valve core assembly, and a sealing ring. This invention defines a distal variable volume cavity and a proximal variable volume cavity located on opposite sides of the axial direction of the movable yoke by having the valve core assembly and the valve body assembly jointly define such cavities. When the valve core assembly moves in one direction along its axial direction, the sealing ring first blocks the annular channel and then opens it. In this way, the initial movement of the valve core assembly is hindered by the air pressure difference, reducing its moment of inertia and speed, thereby weakening the impact force of the valve core assembly on the valve body assembly and reducing the noise during operation of the pneumatic shut-off valve.

This invention discloses an automated warehouse racking system, belonging to the field of warehousing technology. It includes a storage rack and a railcar. The railcar is equipped with a lift, and the output end of the lift is equipped with a loading platform. The output end of the loading platform is equipped with an adjusting rod and a conveying assembly. The storage assembly includes a storage container and a lifting assembly, with several first electric rollers installed inside the storage container. This invention offers two operating modes: single-item direct retrieval and multi-item continuous retrieval. In scenarios involving scattered / urgent items, goods can be directly transferred via the conveying assembly without temporary storage via the storage assembly, resulting in a short operational chain and fast response speed. In scenarios involving batch operations, multiple items can be temporarily stored via the storage assembly, allowing for the retrieval of multiple items in a single round trip, significantly reducing the number of round trips by the stacker crane and improving overall operational efficiency.

The utility model relates to the field of constructional engineering, and discloses a constructional engineering bending auxiliary device which comprises a frame, a placing plate is fixedly installed on the top of the frame, an electric push rod is fixedly installed on the left side of the top of the placing plate, and a mounting frame is fixedly installed at the telescopic end of the electric push rod. And a first rotating wheel is rotatably mounted in the mounting frame, mounting blocks are fixedly mounted on the front side and the rear side of the top of the placing plate correspondingly, second rotating wheels are rotatably mounted on the tops of the mounting blocks, and a protection assembly used for preventing steel bars from outburst is arranged on the top of the placing plate. Through mutual cooperation of the protective cover, the fixing block and the connecting rod, the protective cover can be driven to rotate when the connecting rod is rotated, and at the moment, the bottom of the protective cover is in contact with the bottom of the placing plate, so that reinforcing steel bars at the top of the placing plate can be protected, and the situation that the reinforcing steel bars burst out and hurt a user is avoided.

This invention relates to the field of electric strut technology, and more particularly to an electric strut with a flexible transmission structure. It solves the problems of low applicability and limited position of retraction movement in electric struts. This electric strut with a flexible transmission structure transforms the traditional rigid transmission between the motor and the screw nut into a flexible transmission, thereby significantly reducing the fixed length of the electric strut, improving its installability, and by setting a limiting module to limit the extension and retraction of the electric strut, it prevents reverse movement during extension or retraction, ensuring stability at any position.

This utility model discloses a sealing structure for the stirring shaft of a pre-ash tank in an ammonia stripping tower, including a stirring shaft, a packing seat assembly, a pressure cap assembly, a filling assembly, and a compression structure. The packing seat assembly is welded to the top of the pre-ash tank, and the pressure cap assembly is installed on the packing seat assembly. The stirring shaft passes through the packing seat assembly and the pressure cap assembly. The filling assembly fills the space between the packing seat assembly and the pressure cap assembly. The filling assembly includes a packing block, an inlet pipe, and an outlet pipe. The packing block fills the cavity formed by the packing seat assembly and the pressure cap assembly and contacts the stirring shaft. The inlet pipe and the outlet pipe pass through small holes and are connected to the packing block. This utility model has a simple structure, is easy to install and disassemble on-site, and is easy to maintain, effectively improving the maintainability and operational stability of the equipment.

The utility model relates to precooling treatment device technical field, concretely is a kind of lychee preservation precooling treatment device.The utility model includes precooling tank, the inner wall of precooling tank is provided with salvage assembly, the salvage assembly includes the installation frame of being arranged in the inner wall of precooling tank, the left end of installation frame is fixedly connected with salvage net, the side of precooling tank is provided with the drive mechanism for driving installation frame to move, the inner wall both sides of installation frame are provided with the flap that is rotatably connected by hinge, the drive mechanism includes the chute that is opened in the inner wall both sides of precooling tank, the inner wall sliding connection of chute has moving rod, by setting salvage assembly, when needing to salvage floating leaf and bad fruit in precooling tank, by drive mechanism, so that installation frame moves, so that salvage net follows movement, to salvage floating leaf and bad fruit in precooling tank to salvage net in this way, to reach the effect of the salvage of floating leaf and bad fruit in precooling tank as far as possible.

The utility model discloses a seat low-friction piston rod convenient to adjust damping, which relates to the technical field of seat piston rods and comprises a hydraulic cylinder and a storage cylinder, the hydraulic cylinder is communicated with the storage cylinder, a piston is slidably arranged in the hydraulic cylinder, the piston is fixedly connected with the piston rod, and the piston rod is fixedly connected with the storage cylinder. The end, away from the piston, of the piston rod penetrates through the hydraulic cylinder and is in sliding connection with the hydraulic cylinder, a damping adjusting mechanism is arranged on the storage cylinder and comprises a rotary knob and a valve element, and the rotary knob controls the valve element to move to adjust the flowing area of hydraulic oil to achieve damping adjustment. Damping is adjusted through the damping adjusting mechanism, the valve element is moved by rotating the rotary knob through mechanical transmission, the opening and closing degree of the oil drainage hole is changed, the area of hydraulic oil flowing through the oil drainage hole is changed, damping adjustment is achieved, the comfort and adjustability of a seat are improved, the seat is suitable for various scenes, and the individual requirements of users are met.

The utility model discloses a kind of waste board locking devices, it is related to die cutting machine technical field, including frame, fixed jaw and rotary changes linear motion mechanism being arranged on the frame, and movable jaw and ratchet mechanism being arranged on the rotary changes linear motion mechanism, the rotary changes linear motion mechanism is used to drive the movable jaw close to the fixed jaw to make the movable jaw cooperate with the fixed jaw and clamps the waste board, the ratchet mechanism is used to lock the rotary changes linear motion mechanism to lock the waste board clamped. The utility model waste board locking device has self-locking function, and simple structure, easy to operate, locking effect is good, low in cost, satisfies the use demand of equipment.

This utility model discloses a gearbox with vibration reduction and noise reduction functions, including a lower housing, an upper housing disposed on top of the lower housing, a gear set disposed inside the lower housing, and a sealing assembly disposed on the lower housing and the upper housing. The lower housing has symmetrically arranged first mounting grooves on both sides of its top. The upper housing is fixed to the top of the lower housing, and the upper housing has symmetrically arranged second mounting grooves on both sides of its bottom, with each second mounting groove corresponding to a first mounting groove. The sealing assembly includes a fixing seat fixed to the lower housing and the upper housing, with a buffer sealing sleeve horizontally disposed at the center of one side of the fixing seat. The gear set includes a rotating shaft with a gear fixed on it, and bearings fixed to both ends of the rotating shaft, the bearings being embedded in a mounting tube. This application reduces the noise generated by vibration during gearbox operation, solving the problem of high gearbox noise.

The invention relates to the technical field of hand mold processing, and discloses an auxiliary demolding device in a hand mold production line based on waste recycling, the auxiliary demolding device comprises a fixed bottom plate, the top end of the fixed bottom plate is provided with a driving assembly, and the top end of the driving assembly is fixedly provided with a sliding assembly; blocking assemblies are fixedly mounted on the left side and the right side of the sliding assembly; the driving assembly comprises a motor, and the motor is fixedly installed at the front end of the fixed bottom plate. The motor drives the rotating shaft and the chain wheel to rotate, so that the top end of the chain can be driven to move back and forth to a specified position, that is, the lifting shaft on the sliding plate can be driven to accurately move to the specified position; the lifting shaft can be moved to the clamping position of a manipulator in the next procedure according to the actual production requirement, when the lifting shaft stretches out to make contact with a die lever, an air cylinder can be accurately stopped at different positions, and the application range of the device is widened.