8results about How to "Reduce pressure peaks" patented technology

The invention discloses a cutter head buffering and oil supplementing overflow valve group, which belongs to the technical field of coal mine construction, and comprises an energy accumulator, a valve block and a pressure measuring joint, an oil duct R1-R2 and an oil duct L1-L2 are formed in the valve block, the oil duct R1-R2 comprises an oil port R1 and an oil port R2, the oil duct L1-L2 comprises an oil port L1 and an oil port L2, the oil port R2 and the oil port L2 are used for being connected with a main pump side oil way, and the oil port R1 and the oil port L1 are used for being directly installed on a motor oil port; the energy accumulator is connected with the valve block and used for releasing stored hydraulic oil when the system generates a negative pressure trend, the energy accumulator comprises a first branch communicated with the R1-R2 oil ducts and a second branch communicated with the L1-L2 oil ducts, a first one-way valve is arranged on the first branch, and a second one-way valve is arranged on the second branch; two oil ways are arranged between the R1-R2 oil ways and the L1-L2 oil ways, and a first overflow valve and a second overflow valve are arranged on the two oil ways respectively. According to the invention, the risk of damage to the closed hydraulic system caused by high-frequency impact of the cutter head hydraulic system of the hob type rock tunneling machine can be reduced.

This utility model discloses a filter paperboard punching mechanism, relating to the field of filter paperboard processing technology. It includes a hydraulic punching main unit, with a punching worktable on the front side of the main unit. A lower punching die is fixedly connected to the upper front end of the worktable. A hydraulic telescopic rod is fixedly connected to the upper end of the main unit via a cantilever, positioned directly above the lower punching die. Through the use of elastic heating support pads and elastic pressure pads, the loose fiber structure of the filter paperboard is effectively prevented from being compacted, ensuring the air permeability and filtration efficiency of the filter paperboard. Simultaneously, the elastic heating support pads heat the filter paperboard when in contact with it, softening the fibers and preventing brittle breakage, thus improving the quality of the punching process. Furthermore, the elastic pressure pads further reduce the direct impact of the punching blade on the paperboard, resulting in a smoother punching edge, reducing burrs and fiber damage, and improving the overall quality of the product.

The utility model relates to the technical field of horse tools, in particular to a pressure-reducing anti-skidding saddle pad which comprises a flexible saddle pad body, and one side of the saddle pad body is fixedly connected with a buffering part. The buffering part comprises a front part, a middle part, a rear part and a bending pad used for connecting the front part, the middle part and the rear part, the two sides of the front part and the two sides of the rear part are each connected with an arc-shaped decompression anti-skid pad, the front part and the rear part are each in a tongue shape, the bending pad can be bent to fold the front part and the rear part, and the front part and the rear part are consistent in structure; compared with the prior art, the buffering device has the advantages that the buffering unit can dynamically adjust pressure distribution according to pressure borne by different positions in the horse movement process through the buffering part, the pressure borne by the back of a horse is buffered, the pressure peak value is reduced, the problem that in the horse movement process, local pressure is too large, and discomfort and harm are caused to the horse is solved, and the horse movement safety is improved. The influence of impact force on the horses is effectively reduced, and the pressure borne by the horses can be relieved.

The utility model discloses a water hammer prevention valve which comprises a valve body, a water outlet pipe is fixedly arranged at one end of the valve body, a water inlet pipe is fixedly installed at the other end of the valve body, and meanwhile a water hammer prevention assembly is fixedly arranged on the water inlet pipe. The water hammer prevention assembly comprises a fixing seat, the bottom of the fixing seat is welded and fixed to the surface of the water inlet pipe, a prevention cylinder is installed on the surface of the fixing seat, a buffer seat is movably installed in the prevention cylinder, a guide piece is fixedly installed on the surface of the buffer seat, a guide hole is formed in the upper end of the guide piece, and a guide rod is inserted into the guide hole in the guide piece. According to the water hammer prevention valve, when the buffer seat ascends and descends, the guide rods are installed on the tops of the four sets of guide pieces on the buffer seat, the buffer seat can be limited and guided in the ascending and descending process, and the stability of the buffer seat in the ascending and descending process is guaranteed, the buffer seat cannot incline, and the buffer seat cannot be clamped in the prevention cylinder.

The utility model relates to the technical field of batteries, and discloses a battery and a power utilization device, and the battery comprises a box body, an outer cover plate, a battery cell group, an inner cover plate and a pressure relief piece. The battery cell groups are arranged in the accommodating cavity along the second direction, each battery cell group comprises a plurality of battery cells arranged along the first direction, and each battery cell is provided with an anti-explosion valve; the inner cover plate is arranged in the accommodating cavity and is connected with one surface, facing the battery cell group, of the outer cover plate, the inner cover plate comprises a plurality of first pressure relief parts extending along the first direction, and the first pressure relief parts are arranged in the accommodating cavity along the second direction; a first pressure relief channel is arranged between each first pressure relief part and the outer cover plate, and the anti-explosion valve of each battery cell is arranged on one surface, opposite to the first pressure relief part, of the battery cell; and a plurality of first pressure relief holes sealed by pressure relief pieces are formed in the positions, opposite to the anti-explosion valve, of the first pressure relief parts. Diffusion of high-pressure gas and eruptions in the battery can be reduced, and the risk of thermal runaway propagation is reduced.

The utility model relates to ladle technical field, concretely is a kind of safety system of ladle tilting device. Including energy storage system, O type electromagnetic reversing valve, balance valve, hydraulic cylinder, first unloading oil circuit and second unloading oil circuit;The energy storage system is connected with oil tank pipeline, and energy storage system, O type electromagnetic reversing valve are connected with balance valve pipeline;The balance valve is directly integrated in hydraulic cylinder oil port or connected with hydraulic cylinder pipeline;First unloading oil circuit one end is connected with the hydraulic cylinder rodless cavity oil port, and the other end is connected with main oil return pipeline;Second unloading oil circuit one end is connected with the hydraulic cylinder rod cavity oil port, and the other end is connected with main oil return pipeline. Solve the major safety hazard, such as ladle accidental tilting, molten steel pouring interruption or falling, caused by hydraulic system failure, electrical fault or sudden power failure in the prior art, ensure the continuity and safety of steel smelting process.

The utility model relates to the technical field of correcting instruments, and discloses a back supporting and posture correcting belt. The back support comprises a fabric layer and a wing-shaped supporting plate, and the fabric layer is used for making contact with the human body in an attached mode to increase the comfort degree; the number of the wing-shaped supporting plates is two, the two wing-shaped supporting plates are attached to the fabric layer in a bilateral symmetry mode, the wing-shaped supporting plates are used for being attached to and supported on the lower posterior saw muscle and the middle-lower erector spine muscle on the corresponding sides, and the two wing-shaped supporting plates cooperate to jointly support the spine from the two sides of the spine and limit the spine. The middle and lower erector spine muscles of the human body can be covered, the design of the wing shape conforms to the natural radian of the lumbar vertebra and fits the waist curve, necessary supporting force is provided for posterior sawed muscles, erector spine muscles and other peripheral muscular tissues, and the activity in other directions is not limited while the spine is supported and fixed; the supporting structure aims to solve the technical problems that an existing supporting structure of a posture correcting belt is insufficient in supporting strength, insufficient in lumbar vertebra covering and poor in biomechanical adaptability.

The invention provides a method for controlling roll consumption by using roll types of support rolls of a four-roll mill. The method comprises the following steps executed by a computer: collecting equipment, strips and rolling process parameters; determining iteration parameters of the calculation process; calculating a roll shape curve of the support roll through the roll shape parameters; dividing the length of a roller body and the width of a strip, and defining relevant parameters of a calculation process; calculating a load and deflection change influence function and a supporting force and deflection change influence function; calculating an inter-roller pressure value of each segment after segmentation; calculating an inter-roller pressure optimization function value; judging whether the roll shape is not the original roll shape or not and whether the optimization function value difference is smaller than a calculation error value or not; judging whether the height is not the initial shoulder cutting height and whether the difference value of the optimization function values is smaller than a calculation error value; outputting shoulder cutting height and shoulder cutting length results, and calculating the depth of the fatigue hardening layer of the roller. By optimizing the roller shape curve and calculating the depth of the fatigue hardening layer of the roller, the roller consumption of the supporting roller is reduced, and the economic benefit is improved.