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39results about How to "Strong closing force" patented technology

Fuel injection valve for internal combustion engines

A fuel injection valve for internal combustion engines, having a housing (1) in which an outer valve needle (20) and an inner valve needle (22) guided in it are disposed in a bore (16). The outer valve needle (20), by a longitudinal motion, controls an outer row (130) of injection openings, and the inner valve needle (22), likewise by means of a longitudinal motion, controls an inner row (230) of injection openings, to which rows (130; 230) of injection openings fuel is delivered at an injection pressure through a high-pressure conduit (10) embodied in the housing (1). A control pressure chamber (52) is embodied in the housing (1); it can be made to communicate with the high-pressure conduit (10), and by means of its pressure, a closing force is exerted at least indirectly on the inner valve needle (22). The high-pressure conduit (10) communicates with a control chamber (50), by whose pressure a closing force is exerted at least indirectly on the outer valve needle (20), and the control chamber (50) communicates with the control pressure chamber (52). A control valve (58) is disposed in a housing (1), and by means of the control valve, the control chamber (50) can be made to communicate with a leak fuel chamber (78) (<cross-reference target="DRAWINGS">FIG. 1< / CROSS-REFERENCE>).
Owner:ROBERT BOSCH GMBH

Sand mixer

The invention discloses a sand mixer which comprises a sand mixer supporting frame. A sand mixing chamber is arranged on the supporting frame and comprises a sand mixing barrel vertically fixed to the supporting frame. A rotary bottom disc is horizontally arranged at the bottom of the sand mixing barrel and provided with a drive device capable of driving the rotary bottom disc to rotate. The sand mixing barrel and the rotary bottom disc are in interference fit. The sand mixer further comprises one or two or more blade rotors with the stirring function. Rotating shafts of the blade rotors vertically downwards stretch into the sand mixing chamber. The upper ends of the rotating shafts of the blade rotors are rotationally connected with the supporting frame. The rotating shafts of the blade rotors are provided with rotating drive devices. The sand mixer further comprises a scraper. A scraper shaft of the scraper vertically downwards stretches into the sand mixing chamber along the axis of the rotary bottom disc. The upper end of the scraper shaft is fixedly connected with the supporting frame. A feeding hopper and a water spraying device are arranged above the sand mixing barrel. The sand mixing barrel is provided with a discharging door structure. The sand mixer has the beneficial effects that no dead corners exist during rotating sand mixing, the sand mixing quality is good, the installed power is small, and energy consumption is low.
Owner:永红保定铸造机械有限公司

Door closer

PendingCN113622776AThe closing process is gentleSafe closing processWing openersWing closersMechanical engineering
The invention discloses a door closer. The door closer comprises a sleeve, an adjusting assembly, a first damping assembly and a second damping assembly; the first damping assembly and the second damping assembly are installed in the sleeve; the adjusting assembly comprises a first adjusting piece and a second adjusting piece; the first damping assembly comprises a first elastic piece; an end of the first elastic piece is connected to the surface of the first adjusting piece; the first adjusting piece is fixed to a rotating shaft; the first elastic piece can rotate around the rotating shaft; the second damping assembly comprises a damping piece; an end of the damping piece is hinged to the second adjusting piece; the second adjusting piece is fixed to the rotating shaft; and the damping piece and the first elastic piece can rotate around the rotating shaft at the same time. Through the adoption of the door closer, effective buffering can be provided, a rotating shaft door can be closed gently, the speed of different door opening and closing processes can be adjusted, and convenient use is achieved.
Owner:GUANGDONG LEHUA HOME FURNISHING CO LTD

Four-cylinder closed hydraulic bucket for rotary excavating pile machine

The invention relates to a four-cylinder closed hydraulic bucket for a rotary excavating pile machine. The four-cylinder closed hydraulic bucket can drill and excavate a hole and can also be used for a continuous wall excavating project. The problem that when a known hydraulic bucket for the rotary excavating pile machine meets some hard operation layers, two bucket bodies cannot be closed in place and cannot be lifted and unload soil is mainly solved. A stretchable drill rod is inserted into a sleeve groove of a tooth disc occluder to be connected through a plug pin, and the lower end of the tooth disc occluder is connected with a stand column. Two bucket bodies are connected to two bucket hinge shafts at the lower end of the stand column respectively. The upper ends of four hydraulic oil cylinders are connected to four oil cylinder hinge shafts on the stand column respectively, and the lower ends of the four hydraulic oil cylinders are connected to four oil cylinder connecting shafts on the two bucket bodies respectively. The four-cylinder closed hydraulic bucket is good in operation guidance, the perpendicularity of the stretchable drill rod is high, the included angle between the guiding lines of the four hydraulic oil cylinders and the vertical line of the stretchable drill rod is large, the formed closing force of the bucket bodies is large, and the four-cylinder closed hydraulic bucket is convenient to assemble and disassemble.
Owner:高杰

Energy-saving type cabinet door device for electric cabinet

The invention provides an energy-saving type cabinet door device for an electric cabinet for opening and closing an operation window (101) of the electric cabinet (100). The energy-saving type cabinet door device comprises an upper projection part (11), a lower projection part (12), two guide upright posts (13), a cabinet body door sheet (211) and a drive assembly (200), wherein the upper projection part (11), the lower projection part (12) and the electric cabinet (100) are integrally arranged; the two guide upright posts (13) are fixedly arranged between the upper projection part (11) and the lower projection part (12) and are symmetrically distributed at the front end of the operation window (101); the cabinet body door sheet (211) is guided by the two guide upright posts (13) and can slide up and down; the drive assembly (200) is used for driving the cabinet body door sheet (211) to slide up and down; the drive assembly (200) comprises two fixed sleeve upright posts (4) and a fixed connection plate (21); the two fixed sleeve upright posts (4) are bilaterally symmetrically fixed on the upper projection part (11); and the fixed connection plate (21) is located at the lower parts of the two fixed sleeve upright posts (4) and is fixedly connected with the upper edge of the cabinet body door sheet (211).
Owner:黄莉

Electromagnetic pilot pneumatic control valve for opening and closing double-active control

The invention provides an electromagnetic pilot pneumatic control valve for opening and closing double-active control, and solves the problem of difficult meeting of quick closing deceleration requirements of an engine caused by slower closing response due to influence on a traditional engine control valve by gradual reduction of the exhaust speed and the spring loading force. The electromagneticpilot pneumatic control valve comprises a main valve, an opening secondary valve and a closing secondary valve; the main valve comprises a main valve body, a main valve element and a main valve spring; the main valve element is arranged in the main valve body to form two independent air cavities in the main valve body: an opening air cavity and a closing air cavity; the main valve spring is arranged in the closing air cavity; the main valve body is provided with a medium inlet and a medium outlet; the opening secondary valve and the closing secondary valve are both electromagnetic valves; theopening secondary valve is used for controlling inflation and deflation of the opening air cavity and providing opening force to the main valve element; and the closing secondary valve is used for controlling inflation and deflation of the closing air cavity and providing closing force to the main valve element.
Owner:XIAN AEROSPACE PROPULSION INST

Shock absorption type cabinet door device for electrical cabinet

A shock absorption type cabinet door device for an electrical cabinet is used for opening and closing an operation window (101) of the electrical cabinet (100) and comprises an upper protruding part (11), a lower protruding part (12), two guide vertical posts (13), a cabinet door plate (211) and a driving assembly (200), wherein the upper protruding part (11), the lower protruding part (12) and the electrical cabinet (100) are integratedly arranged, the two guide vertical posts (13) are fixedly arranged between the upper protruding part (11) and the lower protruding part (12) and are symmetrically arranged in front of the operation window (101), the cabinet door plate (211) is guided by the two guide vertical posts (13) and can vertically slide, the driving assembly (200) is used for driving the cabinet door plate (211) to vertically slide and comprises two fixed sleeve vertical posts (4) and a fixed connection plate (21), the two fixed sleeve vertical posts (4) are fixed on the upper protruding part (11) in bilateral symmetry, and the fixed connection plate (21) is arranged under the two fixed sleeve vertical posts (4) and is fixedly connected with an upper side edge of the cabinet door plate (211).
Owner:黎钊彬

Controllable cabinet door device for electrical cabinet

A controllable cabinet door device for an electrical cabinet is used for carrying out opening and closing on an operation window (101) of the electrical cabinet (100) and comprises an upper protruding portion (11), a lower protruding portion (12), two guide stand columns (13), a cabinet body door plate (211) and a drive assembly (200). The upper protruding portion (11) and the lower protruding portion (12) are integrally arranged with the electrical cabinet (100), the two guide stand columns (13) are fixedly arranged between the upper protruding portion (11) and the lower protruding portion (12) and are symmetrically distributed at the front end of the operation window (101), the cabinet body door plate (211) is guided by the two guide stand columns (13) and can vertically slide, the drive assembly (200) is used for driving the cabinet body door plate (211) to vertically slide, and comprises two fixed sleeve stand columns (4) and a fixed connecting plate (21), the fixed sleeve stand columns (4) are fixed to the upper protruding portion (11) in a left-and-right symmetric manner, and the fixed connecting plate (21) is located below the two fixed sleeve stand columns (4) and fixedly connected with the upper edge of the cabinet body door plate (211).
Owner:黄莉

Energy-saving type cabinet door device for electrical cabinet

The invention relates to an energy-saving type cabinet door device for an electrical cabinet. The energy-saving type cabinet door device for the electrical cabinet is used for opening and closing an operation window (101) of an electrical cabinet (100). The energy-saving type cabinet door device includes an upper protruding portion (11), a lower protruding portion (12), two guide columns (12), a cabinet body door plate (211) which can be guided by the two guide columns (12) so as to slide up and down, and a driving assembly (200) for driving the cabinet body door plate (211) to slide up and down, wherein the upper protruding portion (11) and the lower protruding portion (12) are integrally arranged on the electrical cabinet (100), the two guide columns (12) are fixedly disposed between the upper protruding portion (11) and the lower protruding portion (12) and symmetrically distributed at the front end of the operation window (101), and the driving assembly (200) comprises two fixed sleeve upright columns (4) which are in bilateral symmetry and fixed to the upper protruding portion (11), and connecting plates (21) which are located below the fixed sleeve upright columns (4) and are fixedly connected with the upper edge of the cabinet body door plate (211).
Owner:诸暨市柯晶机械技术开发有限公司

Pulse dust collection device

The invention relates to a pulse dust collection device. The pulse dust collection device comprises a fuel gas pipeline, a working air pipeline, a purging air pipeline and a pulse generation pipeline, wherein the pulse generation pipeline sequentially comprises a first connecting pipe, a mixing tank, a second connecting pipe, an ignition tank, a third connecting pipe, a pulse tank and a pulse nozzle; the fuel gas pipeline is connected and communicated with the mixing tank; the working air pipeline and the purging air pipeline are respectively connected and communicated with the pipe wall of the first connecting pipe. Since the mixing tank is arranged on the pulse generation pipeline, the fuel gas pipeline is connected and communicated with the mixing tank; the working air pipeline and the purging air pipeline are respectively connected and communicated with the pipe wall of the first connecting pipe, by firstly feeding working air and purging air into the first connecting pipe at the front end of the mixing tank and directly feeding fuel gas into the mixing tank, the working air, the purging air and the fuel gas can be uniformly mixed through the mixing tank, the ignition efficiency of the ignition tank is greatly improved and the equipment stability is improved.
Owner:CHONGQING KEZHONG MACHINERY
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