32results about How to "Radial dimensions are compact" patented technology

The invention relate to a double-action multistage hydraulic oil cylinder with a solid piston rod. The hydraulic oil cylinder comprises a first-stage cylinder sleeve, pistons, the piston rod and a plurality of stages of inner cylinder sleeves including a tail-stage cylinder sleeve. The piston rod is arranged in the tail-stage cylinder sleeve and is a solid rod. An oil feeding hole is arranged at the bottom end of the first-stage cylinder sleeve, and an oil discharging hole is arranged at the other end. A piston is fixed outside one end of each stage of inner cylinder sleeve close to the oil feeding hole, each stage of inner cylinder sleeve is provided with an oil guide hole which is a through hole communicating the inside and the outside of the inner cylinder sleeve, two outlets are located on the same side of the pistons and arranged , the outlet on the outer wall is close to the pistons, and the outlet arranged on the inner wall is arranged at the end far away from the piston. An oil pipe of the oil cylinder is not stretched, shortened or bended with reciprocating movement of the tail-stage piston rod, so that the oil cylinder prevents the oil pipe from being collided and interfered with the tail-stage piston rod in reciprocating movement and being abraded. The piston rod is of a solid structure, and is better in rigidity, low in processing cost and compact in radial size.

A steering device is provided with support arms (40, 41) on a tilt shaft (32) provided on a bracket (30) of an outboard motor. An electric actuator (50) is mounted between the support arms (40, 41). The electric actuator (50) includes: a cover member (51); a first motor (52) and a second motor (53) arranged at both ends of the cover member (51); Feed screw (54); nut member (70) that moves in the direction of the axis (X1) by rotation of the feed screw (54); moves in the width direction of the hull (11) integrally with the nut member (70) drive arm (71); and protective covers (80, 81). The driving arm (71) is connected to the steering arm (35) via an engaging member (73). When the driving arm (71) moves along the cover member (51) in the axis (X1) direction, the steering angle of the steering arm (35) changes according to the amount of movement of the driving arm (71).

The invention discloses an L-band three-cavity high-power microwave device, which comprises a circular waveguide sleeve and an inner conductor coaxial with the circular waveguide sleeve; one end of the circular waveguide sleeve is provided with a cathode coaxial with the circular waveguide sleeve, and the cathode The opening of the cathode is ring-shaped, the inner diameter of the cathode is 60mm, and the outer diameter is 69mm; the circular waveguide sleeve is sequentially provided with a reflection cavity, a resonant cavity and an extraction cavity with the same inner diameter along the electron beam transmission direction, and the reflection cavity, the resonant cavity and the extraction cavity are The annular groove is set on the circular waveguide sleeve; the axial length of the microwave device is 130mm, the maximum diameter is 150mm, and the diameter of the inner conductor is 40mm; the intensity of the cathode emission beam is 7.0kA under the voltage of 400KV, the inner diameter is 60mm, and the outer diameter is 69mm The circular electron beam is transmitted in the microwave device under the guidance of the axial magnetic field of 0.4T, and the L-band high-power microwave with a frequency of 1.92GHz is radiated within a pulse time. The L-band three-cavity high-power microwave device of the present invention has the advantages of miniaturization, light weight and easy adjustment.

The invention discloses a high-frequency and high-power microwave device, which comprises a circular waveguide sleeve and an inner conductor coaxial with the circular waveguide sleeve. An electronic device with an inner diameter of 8mm and an outer diameter of 14.6mm is formed between the inner conductor and the circular waveguide sleeve. Beam transmission channel; the high-frequency structure is provided with a coaxial reflection area, a beam pre-modulation area, a phase modulation area and a beam conversion area in sequence along the electron beam transmission direction; after the beam conversion area, a radially inwardly protruding annular collector is set ;Reflective area, beam pre-modulation area, phase modulation area and beam conversion area, respectively set annular groove-shaped reflection cavity, beam pre-modulation cavity, phase modulation cavity and beam conversion cavity on the circular waveguide sleeve; inner diameter 12mm , an outer diameter of 12.6mm, a voltage of 400kV, and a beam intensity of 7.3kA are transmitted in a high-frequency structure under the guidance of an axial magnetic field with a magnetic field strength of 1.5T, generating high-frequency and high-power microwaves with a frequency of 67.4GHz. The high-frequency and high-power microwave device of the present invention has the advantages of simple structure size, miniaturization, light weight and easy assembly.

The invention relates to a radial roller screw and a variable-speed transmission thereof. A rotary disc (3), a toothed disc (15), a slide block (4) and a roller (5) are used for sheathing and rotation; when a differential gear is engaged by a clutch, the rotary disc (3) rotates relative to the toothed disc (15), the slide block (4) drives a small center shaft (6) and planetary wheels (24) to do radial displacement, the output rotation speed is gradually increased and decreased, and the stepless variable-speed transmission is realized; a spline shaft (28) is connected with a plurality of pairs of driving wheels (27) to respectively drive several planetary wheels (24); an outer press ring (30) and an outer disc spring (23) are fixedly connected and are arranged in a radial floating sleeve ring to form single-line transmission; the planetary wheels (24) are movably matched and parallelly connected with the small center shaft (6) to form a multi-line distribution beam type cage-shaped revolving body; the planetary wheels (24) are pressed by an inner disc spring and the outer disc spring, and the contact transmission force and torque are proportionally increased and decreased, and are consistently adjusted; the clutch (9) and a shift rod (29) synchronously move left and right at equal amount, and the small center shaft (6) parallelly displaces. Each line of planetary wheels (24) bears the load, so the contact stress is decreased, and the slip rate is reduced. The transmission effect of the high-power and high-efficiency stepless variable speed in automobiles and numerical control machining tools is obvious.

The invention belongs to the field of vibration control, and particularly relates to a spring damping vibration isolator for isolating vibrations. The spring damping vibration isolator comprises an upper support plate, an elastic element and a lower support plate, wherein the elastic element is positioned between the upper support plate and the lower support plate; a damping cylinder is arranged below the lower support plate; a liquid damping material is arranged in the damping cylinder; a movable body linked with the upper support plate or lower support plate is arranged in the damping cylinder; and at least part of the movable body is arranged in the liquid damping material. In the invention, the damping cylinder and the movable body are independently arranged under the elastic element,thereby greatly enhancing the system damping, and overcoming the defect of limited contact area of spring and damping material restricted by the space in the damping cylinder in the prior art; and the invention strengthens the sealing performance, thereby greatly enhancing the waterproof property of the vibration isolator. The invention has the advantages of simple structure, stable property and strong applicability, can be widely used for damping in the fields of machinery, rail transportation, bridges, architectural structures and the like, and has obvious economic and social benefits.

An integrated bellows mechanical seal device for a pump comprises a bellows type moving ring assembly (1), a static ring assembly (2), a shaft sleeve (3), a press cover (4) and a stopping clamping matching mechanism (5) arranged between the outer side of the press cover and the shaft sleeve. The integrated bellows mechanical seal device is characterized in that a fixed seat (18) is arranged at the rear end of a moving ring tailstock (12). A seal groove (13), a seal ring (14), a check ring (15), a clamping ring (17) and an anti-rotating pin screw (31) are arranged, and the moving ring assembly (1) is connected with the shaft sleeve (3). A connecting protruded ring (32), a seam allowance seal groove (33), a seal ring (34), a press ring (35) and a fastening screw (38) are arranged at the front end of the shaft sleeve (3), and the shaft sleeve (3) is connected with a shaft. The integrated bellows mechanical seal device is good in structure, overcomes the problem of deformation of the shaft sleeve (3) caused by the fastening screw and is compact in radial dimensions, convenient to install and reliable to use.

The invention discloses an S-band three-cavity high-power microwave device, which includes a circular waveguide sleeve, and the circular waveguide sleeve is sequentially provided with a reflection cavity, a resonant cavity and an extraction cavity with the same inner diameter along the electron beam transmission direction. The cavity, resonant cavity and extraction cavity are annular grooves arranged on the circular waveguide sleeve; the annular electron beam with a voltage of 400kV and a beam intensity of 7.0kA is transmitted in the microwave device under the guidance of an axial magnetic field of 0.4T. One pulse time Internal radiation generates S-band high-power microwaves with a frequency of 2.4GHz. The S-band three-cavity high-power microwave device of the invention has the advantages of miniaturization, light weight and easy adjustment.

The invention discloses a welding process of a corrugated pipe assembly and an application device thereof. The welding process steps include: a. welding to form a master piece; b. welding to form a corrugated tube core; c. welding to form a corrugated tube; d. welding to form a corrugated tube Tube assembly; leak test. A bellows sealing device, characterized in that it includes a bellows assembly, a casing, a static ring and a moving ring, wherein: the left end of the casing is embedded in a groove surface, the static ring is arranged in a step surface, and the The moving ring is arranged close to the end face of the static ring, and the contact surface forms a sealing end face. High welding efficiency, good precision, stable elastic compensation and long service life.

The invention discloses a three-component force sensor for measuring the load at the joint of the automobile suspension bushing. It includes a tubular connector, an annular connector and four Y-shaped elastic elements. The four Y-shaped elastic elements are elastic elements with the same structure, and are arranged symmetrically at intervals of 90° along the circumferential direction. The Y-shaped elastic element includes an internal fixed end, a strain beam, a Y-shaped connecting beam, and an external fixed end. Strain gauges are fixed on the strain beam. The tubular connecting piece includes an internal connection hole, an internal groove, and top wire holes on both sides. The annular connecting piece includes an external groove connected with the Y-shaped elastic element and a threaded hole connected with the test piece. The invention has the advantages of improving the level of local measurement stress while ensuring the connection rigidity, and at the same time eliminating the collection error caused by the misalignment of the load.

The invention discloses a dual-frequency three-cavity high-power microwave device, which comprises a circular waveguide sleeve and an inner conductor coaxial with the circular waveguide sleeve; one end of the circular waveguide sleeve is provided with a cathode coaxial with the circular waveguide sleeve, and the cathode The opening of the cathode is ring-shaped, the inner diameter of the cathode is 60mm, and the outer diameter is 70mm; the circular waveguide sleeve is sequentially provided with a reflection cavity, a resonant cavity and an extraction cavity with the same inner diameter along the electron beam transmission direction, and the reflection cavity, the resonant cavity and the extraction cavity are The annular groove set on the wall of the circular waveguide sleeve; the axial length of the microwave device is 130mm, the maximum diameter is 150mm, and the diameter of the inner conductor is 40mm; the cathode emits an annular electron beam with a beam intensity of 7.0kA at a voltage of 400KV. The beam is transmitted in the microwave device under the guidance of the axial magnetic field of 0.4T, and the dual-frequency high-power microwaves with frequencies of 1.92GHz and 2.2GHz can be radiated simultaneously within one pulse time. The dual-frequency three-cavity high-power microwave device of the present invention has the advantages of miniaturization, light weight and easy adjustment.