107results about How to "Avoid Vibration Damage" patented technology

Provided is an ink-jet recording head that prevents a vibration plate thereof from damage attributed to drive of a piezoelectric element, and an ink-jet recording apparatus. There are provided within a region facing the pressure generating chamber, a piezoelectric active portion, and a piezoelectric non-active portions, the piezoelectric non-active portions being provided on both end portions of the piezoelectric active portion in a longitudinal direction thereof. An electrode wiring is drawn out of an upper electrode which is provided on one end portion in the longitudinal direction of the pressure generating chamber. There is also provided a protection layer on the other end portion in the longitudinal direction of the pressure generating chamber for protecting the vibration plate. Rigidity of the vibration plate is thereby increased.

The invention relates to an LED (Light-Emitting Diode) lamp tube with large light flux and a large light-emitting angle. The LED lamp tube is provided with an insulated connecting sleeve which introduces a power supply to the electricity supply part of a COMMB-LED light source assembly and the heat dissipating and transferring aluminum profile support frame part of a V-shaped structure; the combined body of the heat dissipating and transferring aluminum profile of the V-shaped structure and the COMMB-LED light source assembly is arranged in a glass lamp tube. The LED lamp tube is characterized in that the heat conducting and transferring aluminum profile of the V-shaped structure is arranged in the glass lamp tube of the LED lamp tube along the length direction of the lamp tube; the COMMB-LED light source assembly is arranged on two symmetrical inclined surfaces of the heat conducting and transferring aluminum profile of the V-shaped structure and closely contact with the heat conducting and transferring aluminum profile in an adhering way; both ends of the lamp tube is provided with constant current power supplies; a diffusion membrane or a fluorescent powder adhesive tape which realizes light uniformity, different color temperature and color developing indexes is arranged on the inner wall of the glass tube positioned in the light-emitting direction of the COMMB-LED light source assembly.

A mechanical multidirectional absorber relates to the field of oil and gas well projects and geological exploration drilling and comprises an upper joint. The lower end of the upper joint is connected with a mandrel which comprises a large-outer-diameter mandrel, a medium-outer-diameter mandrel and a small-outer-diameter mandrel. A mud scraping ring seat, a stabilizing cylinder, a spline cylinder and a guide cylinder are arranged outside the mandrels. The stabilizing cylinder comprises a large-inner-diameter stabilizing cylinder and a small-inner-diameter stabilizing cylinder. An upper hydraulic chamber is arranged between the medium-outer-diameter mandrel and the large-inner-diameter stabilizing cylinder. A damping ring gap is arranged between the medium-outer-diameter mandrel and the small-inner-diameter stabilizing cylinder. A piston, a thrust bearing and an upper elastomer are arranged between the mandrel and the spline cylinder as well as the guide cylinder. The piston comprises a piston body and a piston joint. The piston body comprises a large-inner-diameter piston body and a small-inner-diameter piston body and is provided with a torque transforming mechanism. A lower hydraulic chamber is arranged between the small-outer-diameter mandrel and the large-inner-diameter piston body. A guide rod is connected with the lower end of the mandrel. A lower elastomer and a lower joint are arranged between the guide rod and the guide cylinder. The lower joint is connected with the lower end of the guide cylinder. The mechanical multidirectional absorber integrates the functions of damping, vibration attenuation and vibration isolation and has good safety.

The invention discloses a steel arch assembling machine which comprises a heading machine main beam (8). Guiding wheels are arranged on the heading machine main beam (8) and include the upper guiding wheel (2) and the lower guiding wheels (5), a hydraulic motor (4) is arranged on the upper guiding wheel (2), and a circular beam (1) with steel arch supports (3) and a positioning hinge pin (7) is connected with the guiding wheels in a sliding mode. The steel arch assembling machine of the structure is simple in structure and convenient to operate, arch assembling can be conveniently and rapidly carried out in the mode of rotating the circular beam, the shockproof effect is achieved through hydraulic oil cylinders installed on the lower guiding wheels, components of the steel arch assembling machine are prevented from being damaged by vibration, and influences of vibration of a heading machine on the arch assembling machine are reduced.

Provided is a vibration testing method for an airplane braking system. The vibration testing method for the airplane braking system is used for triggering the hidden danger of vibration failures within the service life of the braking system. The vibration testing method comprises the steps of determining the testing time according to the vibration time of the service life requirement, determining the vibration test level according to the highest vibration level within the service life period, eliminating the failures through the technology that the hidden danger of the vibration failures is triggered with a high level and displayed with a low level, mounting all products of the braking system onto an electric vibration platform in a connection mode of the system, and triggering the hidden danger of the vibration failures in the running state of the braking system. By means of the vibration testing method for the airplane braking system, the test cycle is shortened and the test cost is reduced.

The invention discloses a plastic particle screening device. The plastic particle screening device comprises a screening barrel, sieve plates and a rack. The sieve plates are arranged in the screeningbarrel. Valves are arranged on the side wall and the bottom of the screening barrel. A vibration mechanism is arranged at the bottom of the screening barrel and comprises a connecting rod, a crank and a motor. The connecting rod is hinged to the bottom of the screening barrel, one end of the crank is hinged to the connecting rod, and the other end of the crank is connected with the motor fixed tothe rack. An air supply system comprises installing bases and air cylinders, the installing bases are fixedly arranged at the bottom of the screening barrel, and a piston rod is arranged between eachinstalling base and a piston of the corresponding air cylinder. The side wall between the bottom of each air cylinder and the corresponding piston is provided with an air inlet one-way valve and an air outlet one-way valve. An air inlet is formed in the side wall of the screening barrel, and a ventilation pipe is connected between the air inlet and each air outlet one-way valve. By adoption of the scheme, damage to a screening barrel body is little, and large plastic particles blocking sieve holes are more easily separated from the sieve plates.

The invention provides an ultrasonic wave pulper. The ultrasonic wave pulper includes a pulper drum, a drum cover, a motor, a main pipe, an elastic damping pipe and ultrasonic wave emitters. The drum cover is mounted on the pulper drum, the motor is mounted to the lower end of the pulper drum, the motor leads the main pipe out and inserts the main pipe into the pulper drum, and the ultrasonic wave emitters are mounted on the main pipe. The ultrasonic wave pulper is characterized in that the ultrasonic wave ruptures high-pressure bubbles to form a miniature liquid jet flow to impact particles to accelerate disintegration of the particles. Four ultrasonic wave emitters are uniformly disposed at the periphery of upper, middle and lower areas so that ruptured bubble jet flows can be generated in a plurality of areas, the speed of disintegration of particles can be raised. Influence on the ultrasonic wave emitters caused by impact and vibration of bubble rupture can be eliminated by the elastic damping pipe.

The invention relates to the technical field of power batteries, in particular to a non-modular type battery box for square electric forklift electric cores and a power battery pack. The non-modular type battery box for the square electric forklift electric cores comprises a box body, wherein a battery containing cavity is formed in the box body, and a plurality of limiting supporting frames are vertically arranged on a base plate of the box body at intervals; the battery containing cavity is divided into a plurality of electric core plug-in mounting cavities by the limiting supporting frames,and the electric core plug-in mounting cavities are used for mounting the electric cores in a plug-in counterpoint mode; and a cover plate is mounted at the upper end of the box body. According to the non-modular type battery box for the square electric forklift electric cores and the power battery pack, when mounting is carried out, the square electric forklift electric cores are inserted in theelectric core plug-in mounting cavities in a counterpoint mode and are fixed, the electric cores do not need to be fixed into a battery module in advance, and the binding step is omitted; and the limiting of the electric cores in the Z direction is realized, the square electric forklift electric cores are limited on the side edges, the corresponding positions of the square electric forklift electric cores in the electric core plug-in mounting cavities are effectively limited, the overturning and skewing of the square electric forklift electric cores are prevented, and the technical problem that an existing square electric forklift electric core needs to be fixed into a module and then assembled into the box body in the prior art is solved.

The invention discloses a mounting hanging bracket for multi-station conference projection equipment, relates to the technical field of projection fixing brackets, and solves the problems that most oflens dust cover plates of existing mounting hanging brackets are fixedly arranged and cannot be suitable for sealing and covering lenses in different positions of different models of projectors and the application is relatively single. The mounting hanging bracket for the multi-station conference projection equipment comprises a telescopic hanger rod, a clamping fence, a supporting bracket, an electromagnetic push rod and ejection inserting rods, wherein the telescopic hanger rod comprises positioning wedge blocks and is a three-section type piston which is telescopically arranged, the two positioning wedge blocks symmetrically bulge out of the bottom side of the back of a square rod sleeve on the outermost layer of the telescopic hanger rod, and a positioning shaft sleeve is welded and fixed at the bottom of a piston square rod on the innermost side of the telescopic hanger rod. By means of ejection sliding fit of oblique planes of the two ejection inserting rods and the two positioning wedge blocks, the supporting bracket and the square rod sleeve on the outer layer of the telescopic hanger rod can be automatically inserted and positioned together, and the telescopic hanger rodis enabled to keep in a shrinking state.

The invention discloses a portable damping comprehensive security gateway management device. The portable damping comprehensive security gateway management device comprises a host body, the lower surface of the host body is fixedly connected with a bottom plate through a plurality of damping devices; A sliding groove is formed in the left side wall of the bottom plate. A sliding block is slidablyconnected into the sliding groove; two supporting plates are symmetrically and fixedly connected to the side wall of the left side of the sliding block; A same fixing rod is fixedly connected betweenthe two supporting plates. the rod wall of the fixed rod is movably sleeved with a sleeve; Two through holes are symmetrically formed in the pipe wall of the sleeve, the fixing rod penetrates throughthe sleeve through the through holes, a moving rod is slidably connected into the sleeve, a first magnet is fixedly connected to the right end of the sleeve, a second magnet corresponding to the firstmagnet fixedly sleeves the rod wall of the moving rod, and the polarities of the opposite sides of the first magnet and the second magnet are opposite. The host machine can be moved very conveniently, the labor intensity is reduced, the host machine body can be effectively damped, and the host machine is prevented from being damaged by vibration when the host machine is moved.

The invention provides a vertical vibration detection device which comprises a shell. A partition plate is transversely arranged at the upper portion in the shell, an induction area is arranged above the partition plate, a vibration area is arranged below the partition plate, an induction assembly is arranged in the induction area, the induction assembly comprises three layers arranged from top to bottom, the first layer is a first rubber block, the second layer is a resistance strain gauge, the third layer comprises a magnetic control elastic body and second rubber blocks located on the left side and the right side of the magnetic control elastic body respectively, the first rubber blocks, the resistance strain gauges, the second rubber blocks and the magnetic control elastic body are tightly installed together, leads are arranged on the resistance strain gauges, and the tail ends of the leads penetrate through wiring holes in the shell and are led out of the shell; a magnetic vibration mass block located under the magnetic control elastic body is arranged in the vibration area, a spring is connected between the bottom of the magnetic vibration mass block and the bottom of the shell, and guide mechanisms are vertically arranged on the two sides of the magnetic vibration mass block so that the magnetic vibration mass block can only vibrate vertically. And the vertical vibration of the object can be accurately detected.

The invention discloses a large ITO target storage box. The storage box comprises a main box body, a storage cavity body and a moving cabinet. The bottom end of the main box body is fixedly provided with fixed legs, and the surface of the main box body is provided with a sealing door body through hinges. The surface of the sealing door body is provided with a crank handle through a pin roll, and asnap ring is welded on the surface of the main box body on one side of the sealing door body. The main box body is provided with the storage cavity body, a limit door panel is installed on the surface edge of the inner wall of the storage cavity body by hinges, the moving cabinet is movably installed in the storage cavity body, and the surface of the moving cabinet is provided with a groove. Storage separation cavities are uniformly arranged in the moving cabinet, and a transfer rack is movably arranged in each storage separation cavity. By means of the structures, the target storage box canstore large targets and facilitates taking and storage of the targets at the same time. The inside of the storage box can be subjected to shock absorption treatment to fully protect the targets.

The invention belongs to the technical field of mechanical mechanism design, and particularly relates to a chassis structure of a walking robot in a pipeline. The chassis structure comprises power units, a supporting unit and walking units, the two sides of the support unit are each provided with one walking unit, and the power units are arranged on the walking units. The power units are used fordriving the walking units and enabling a chassis to move forwards or backwards, the lower ends of the walking units can swing outwards and are matched with the inner diameter of the pipeline where thewalking units are located, and the supporting unit is used for being provided with detection equipment and can drive the detection equipment to ascend or descend. Besides the chassis structure has the waterproof and dustproof functions, colliding and other hazards caused by the situation that the position of a motor is low in the prior art can be avoided; and when the water level in the pipelineis high, after two electrodes are immersed, a control unit obtains signals, the control unit drives a lifting mechanism to act, a platform plate is lifted until the electrodes of the platform plate are lifted to the position above the water surface, and therefore the detection equipment is actively prevented from being immersed in water.

The invention provides an electric welding machine equipped with an adjustable hydraulic fastening mechanism, which includes a second support rod, a hydraulic cylinder, a pressure rod, a telescopic baffle, a pressure relief knob, an oil cylinder supporting slide plate and a push rod, which are arranged close to the top plate Five shock-absorbing springs are arranged equidistantly on the top end faces of the two left-right symmetrical slide rails, and the above-mentioned two slide rails are connected and fixed together with the top plate through the five shock-absorbing springs at their tops; the electric welding machine Two rectangular slide plates protrude up and down symmetrically on the side walls of the left and right sides of the main body, and the welding machine body slides through the above slide plates and is placed inside the chute of the four slide rails. The setting of the welding rod holding box in the present invention, the welding rod holding box can store welding rods of different materials in categories, so that the welding rods can be integrated and stored together with the electric welding machine, which is convenient for taking and using the welding rods, and at the same time, the heat generated during electric welding can heat the welding rods Store the welding rod inside the box to avoid excessive humidity of the welding rod from affecting the welding effect.

The invention discloses a power distribution cabinet convenient to move. The power distribution cabinet comprises a power distribution cabinet shell and a cabinet door, wherein the cabinet door is moveably connected with the power distribution cabinet shell through a hinge; two sliding rods are arranged in parallel on the upper side and the lower side inside the power distribution cabinet shell; the two sliding rods are sleeved by first sliding sleeves; a mounting plate is welded between the two first sliding sleeves. Due to adoption of the sliding rods and the first sliding sleeves, displacement of the mounting plate in a vertical direction can be inhibited, and structural stability can be ensured; due to adoption of a damping spring, transverse vibration energy can be absorbed, then electric elements on the mounting plate can be protected, and the electronic elements can be prevented from vibration damage; in addition, due to cooperation of a first limiting block and a second limiting block, switching of moving wheel bearing and base bearing can be easily completed, then free movement of the power distribution cabinet can be ensured, in addition, the power distribution cabinet can be stably placed, and the power distribution cabinet is reliable and practical in structure.

The invention belongs to the technical field of specimen transfer, particularly relates to a microbial specimen transfer device, and provides the following scheme for solving the problem of poor storage environment: the microbial specimen transfer device comprises an equipment box and a transfer box, a placement plate is horizontally and slidably connected in the transfer box, and a placement groove is formed in the surface of the placement plate; the equipment box comprises a draught fan chamber, a heating chamber, a condensation chamber, a backflow chamber and a water storage chamber, a heating pipe is vertically installed in the heating chamber, a condenser is installed at the bottom in the condensation chamber, a water pump is installed on one side of the bottom in the water storage chamber, and a temperature sensor and a humidity sensor are installed in the middle of the top in the transfer box side by side. A bottom plate is arranged below the transfer box, and a damping structure is arranged between the transfer box and the bottom plate. The optimal temperature and humidity of microorganism survival are kept, the survival state of microorganisms in the transfer process is guaranteed, shock absorption can be conducted on the transfer box, the shock absorption effect is good, and test tubes or cultured mediums are prevented from vibrating and being damaged.

The invention discloses a mobile device for facilitating transportation of a warship electromagnetic rail gun. The mobile device comprises a device shell, a lifting device, a rotating device, a buffering device, the electromagnetic gun and protection devices. The lifting device is fixed into the device shell, and the rotating device is fixed to the top of the lifting device. The buffering device is arranged at the top of the rotating device, and the buffering device is fixedly connected with the rotating device. The electromagnetic gun is disposed at the top of the buffering device, and the electromagnetic gun is fixedly connected with the buffering device. The protection devices are symmetrically arranged on both sides of the device shell, and the protection devices are slidably connectedwith the device shell. According to the mobile device for facilitating the transportation of the warship electromagnetic rail gun, the lifting device and the protection devices can be used for realizing lifting and lowering of the electromagnetic gun on a deck of a warship, protecting the electromagnetic gun and preventing the enemy from launching an attack against the electromagnetic gun to destroy the electromagnetic gun due to detection of the electromagnetic gun, the combat power is saved, furthermore, a sudden blow can be delivered to the enemy, and the rotating device is used for increasing the attack angle of the electromagnetic gun.