7results about How to "Avoid force imbalance" patented technology

The invention relates to the technical field of drilling and production equipment testing tools, in particular to a drill rod bidirectional clamping high-temperature testing clamp which comprises a shell, an outer wall clamping mechanism and an inner wall clamping mechanism, and the outer wall clamping mechanism and the inner wall clamping mechanism are arranged in the shell. The outer wall clamping mechanism comprises a contraction elastic clamping sleeve and a first driving device in driving connection with the contraction elastic clamping sleeve, and the inner wall clamping mechanism comprises an expansion elastic clamping sleeve and a second driving device in driving connection with the expansion elastic clamping sleeve. The contraction elastic clamping sleeve and the expansion elastic clamping sleeve are coaxially arranged in a spaced mode, and a clamping channel used for clamping the end of the drill rod is formed between the inner wall of the contraction elastic clamping sleeve and the outer wall of the expansion elastic clamping sleeve. The first driving device can drive the contraction elastic clamping sleeve to contract in the radial direction of the clamping channel, and the contraction elastic clamping sleeve expands and resets in the radial direction of the clamping channel after being undriven; the second driving device can drive the expansion elastic clamping sleeve to expand in the radial direction of the clamping channel, and the expansion elastic clamping sleeve shrinks and resets in the radial direction of the clamping channel after being undriven.

The invention relates to the technical field of shredding machine blade replacement, and discloses a shredding machine blade quick replacement mechanism which comprises a rotating roller, a pre-positioning mechanism is arranged on the outer side of the rotating roller, and a fixing mechanism is arranged in the rotating roller; the pre-positioning mechanism comprises a plurality of fixing frames, the inner wall of each fixing frame is fixedly connected with the outer surface of the rotating roller, two cutter bodies are slidably connected to the inner wall of each fixing frame, positioning columns are fixedly connected to the side faces, close to each other, of each set of cutter bodies, and the outer surface of each positioning column is slidably connected with the inner wall of the corresponding fixing frame. According to the rapid replacement mechanism for the shredder blade, by arranging the fixing frame, a stable mounting and bearing foundation can be provided for the cutter body, meanwhile, pre-positioning of the cutter body is achieved in cooperation with the magnetic attraction effect of a positioning column and a powerful magnet, and when an operator slides the cutter body into the fixing frame, the positioning column can move along the guide track of the fixing frame; and the adsorption force is generated.

This utility model discloses a wetland ecological restoration bank protection device, including two fixed seats and a fixed bank protection frame between the two fixed seats. A first connecting plate is fixedly connected to the front and rear sides of the fixed bank protection frame near the left side. A fixed plate is fixedly connected to the bottom of the first connecting plate. In this wetland ecological restoration bank protection device, when adjusting the height of the movable bank protection frame, a rocker wheel is rotated. The rocker wheel drives a threaded rod to rotate within the inner cavity of the first threaded hole and the bearing. The movable bank protection frame moves up and down relative to the threaded rod under the action of the thread. The movable bank protection frame moves within a defined trajectory through the setting of a limiting groove and a limiting rod. Therefore, the height of the movable bank protection frame within the fixed bank protection frame can be adjusted according to the water level, improving the precision of water blocking. This device places the threaded rod at the center position of the movable bank protection frame to avoid uneven force, thereby achieving height adjustment of the movable bank protection frame.

This invention discloses a dual-station steering gear housing machining fixture in the same direction and its usage method. It includes a base with a first machining position on the base. The first machining position has a first mounting surface (higher on the outside, lower on the inside) and a second mounting surface. The first mounting surface is located on the left side of the first machining position, and the second mounting surface is located on the right side. A left-section positioning mechanism is disposed on the first mounting surface for positioning the left half of the steering gear housing. A middle-section support and clamping mechanism is disposed on the left half of the second mounting surface for supporting, clamping, and positioning the middle section of the steering gear housing. A right-section positioning mechanism is disposed on the right half of the second mounting surface for positioning the right half of the steering gear housing. This invention effectively avoids dimensional deviation problems, improves the stability and accuracy of clamping, effectively reduces production costs, significantly reduces the probability of human error, and significantly reduces equipment modification costs.

The utility model discloses a high-thrust single-acting piston type pneumatic actuator, and relates to the field of pneumatic actuators. An existing piston type pneumatic actuator has the problems of unbalanced spring acting force, poor structural stability, insufficient sealing and the like. The hydraulic cylinder comprises a lower cylinder cover, a cylinder sleeve, a piston, a push rod, an upper cylinder cover, a lower spring seat assembly, a supporting sleeve, an upper spring seat, a lead screw, a hand wheel seat and a hand wheel transmission assembly, and is provided with multiple sealing rings. An independent spring seat structure is adopted, a bearing assembly is matched, the spring does not directly act on the piston any more, stable force transmission is ensured, the stability and reliability in a high-frequency vibration environment are effectively improved, air source leakage is effectively prevented through multiple sealing, the maintenance cost is reduced, and the performance requirement of industrial automation for a high-thrust actuator is met.

The utility model discloses a component locking structure of force plate, and belongs to the technical field of force plate, which comprises a plate body, a through core shaft hole is arranged on one side of the plate body, a core shaft assembly is movably inserted into the core shaft hole, two closed hoisting grooves are formed between the core shaft assembly and the plate body, wherein the core shaft assembly comprises a core shaft base pole, a shaft sleeve is movably sleeved on the end of the core shaft base pole, a rotating rod is movably inserted into the shaft sleeve, and a plurality of clamping blocks are arranged in the form of a ring on the end of the rotating rod and in the shaft sleeve. Advantageous effects: when disassembling, the assembly locking can be released by only pressing the rotating rod and rotating the shaft sleeve, the core shaft assembly can be conveniently taken out, and the overall structure does not need to be disassembled with the aid of complex tools, thereby effectively shortening the maintenance time and reducing the labor cost. In addition, the closed hoisting groove structure enables the load to be evenly distributed on the plate body, optimizes the force transmission path, and reduces the local stress concentration phenomenon.

The utility model discloses carbon fiber automatic deviation correction hot press forming device belongs to the hot press forming field. Including hot press station, this hot press station upper surface is provided with the down pressure station, four sets of deviation correction subassembly, its setting is in the hot press station, every group deviation correction subassembly contains the alignment part for four sides deviation correction of glass board installation in hot press station, is provided with the pressure holding part for the limitation of pre -preg on glass board on alignment part, be provided with the drive part for realizing deviation correction and pressure holding cooperation action on pressure holding part. Carbon fiber automatic deviation correction hot press forming device of the present application, through the alignment part of four sets of deviation correction subassembly can accurate correction glass board center deviation, avoid the unbalance of hot press stress, prevent the thickness uneven of board, resin overflow and solidification not completely, and the pressure holding part is matched with the drive part, avoids when rectifying, holds pre -preg before hot press, offsets the risk of sliding, ensures that pre -preg and glass board position stability, improves quality consistency from stress balance and position stability.