52results about How to "Avoid locking failure" patented technology

The invention discloses a valve clamping device with a locking mechanism and a valve repair system. The valve clamping device comprises a fixed base, one or more pairs of tong arms, a driving assemblyand a locking mechanism, wherein the tong arms are connected with the fixed base and can be opened and closed relative to the fixed base; the driving assembly comprises a driving shaft movably inserted into the fixed base, the driving shaft moves in the axial direction to drive the tong arms to be opened and closed relative to the fixed base, and a positioning part is arranged on the peripheral surface of the driving shaft; and the locking mechanism comprises a locking piece and a pushing piece, wherein the locking piece is provided with a locking hole in the axial direction, the driving shaft is inserted into a locking hole in a penetrating mode, and the pushing piece abuts against the locking piece and is obliquely arranged in the fixed base, so that the edge of the locking hole is clamped to the positioning part. According to the valve clamping device, the locking mechanism can increase friction force and mechanical meshing force between the driving shaft and the locking piece, abrasion caused by local stress of the edge of the locking hole of the locking piece is prevented, the anti-fatigue performance of the valve clamping device is improved, the locking stability is improved, and locking failure is prevented.

The invention discloses a locking and lifting mechanism for a reactor fuel assembly and an operation method thereof. The mechanism comprises a rotating claw, an operation head, a positioning shaft sleeve, a locking rod and a lower grid plate, wherein the rotating claw can move and rotate around a vertical axis; the operation head can be locked together or separated from the rotating claw; the positioning shaft sleeve fixedly connects the operation head together with the fuel assembly; the locking rod runs through the positioning shaft sleeve and the fuel assembly, and can rotate around the vertical axis; a lower-end locking head of the locking rod extends out of the lower end of the fuel assembly; the lower grid plate is fixed at the bottom of a reactor. In an initial state, the rotating claw is locked together with the operation head, and the locking rod is not locked together with the lower grid plate. After the reactor fuel assembly is arranged in place on the lower grid plate, therotating claw is unlocked from the operation head by being rotated by an angle to allow the rotating claw to be separated from the operation head; meanwhile, the lower-end locking head of the lockingrod is locked together with the lower grid plate by being rotated by an angle under the driving action of the rotating claw, so that the fuel assembly is locked on the lower grid plate.

The invention discloses a pulling plug type magnetic lock capable of being locked through automatic spinning. The lock comprises a pull bolt (21), a sleeve (22), a sleeve inner plug (23), a brake ring (24), a rotary piece (25), a plug pin (26) and a plug pin drive assembly (27), wherein the pulling bolt (21) is fixed to one side of the lock, the top end of the pulling bolt (21) is provided with a flange, the sleeve (22) is fixed to the other side of the lock and can be inserted to the pulling bolt, the sleeve inner plug (23) is arranged in the sleeve and can axially move relative to the sleeve, the sleeve (22) is sleeved with the brake ring (24), the rotary piece (25) is arranged between the brake ring and the sleeve and can synchronously rotate with the brake ring, the plug pin (26) extends perpendicular to the axial direction of the brake ring, and one end of the plug pin (26) is matched with the a radial deformed region (24) on the outer wall of the brake ring to lock or release the brake ring. The rotary piece can be driven by the sleeve inner plug to rotate under the action of the downward force of the pulling bolt, and can be driven by the brake ring to rotate back under the action of the upward force of the pulling bolt. The pulling plug type magnetic lock capable of being locked through automatic spinning prevents ineffective locking caused by small electromagnetic force, and can achieve locking and unlocking with very small electromagnetic force; unlocking is achieved with the assist of the mechanical force, the lock structure is simplified, and working is more reliable.

A synchronous memory device having a normal mode and a power down mode includes a power down mode controller for generating a power down mode control signal in response to a clock enable signal, thereby determining onset or termination of a power down mode. A clock buffering unit buffers an external clock signal in response to the power down mode control signal and outputs first and second internal clock signals. A clock selection unit selects one of the first and second internal clock signals based on the power down mode control signal to output the selected signal as an intermediate output clock signal. A phase update unit performs a phase update operation by using the intermediate output clock signal to output a delay locked loop (DLL) clock signal, the first internal clock signal differing in frequency from the second internal clock signal.

The invention relates to the technical field of locking devices and discloses a front locking mechanism for a cargo box. The front locking mechanism comprises a locking handle, wherein the locking handle is hinged to a locking handle base fixed on a cargo box front frame assembly through a handle pin shaft and is hinged to a locking hook ring through a ring hook pin shaft; the locking hook is hooked with a cargo box front plate latch hook for connecting the cargo box front frame assembly with the cargo box side plate assembly; an upper spring mounting bracket is arranged inside the locking handle; a spring is connected between the upper spring mounting bracket and the ring hook pin shaft. The front locking mechanism for the cargo box facilitates the locking operation, and the structure is not easy to wear and is long in service life.

The invention discloses an adjustable seat for light aircrafts, which comprises a fixed baseplate (1) and a backrest (2), wherein the front parts of two side plates of the fixed baseplate (1) are respectively provided with a sliding slot (12), and the rear parts of the two side plates of the fixed baseplate (1) are respectively provided with a positioning pin row consisting of at least a positioning pin (6); a fixed plate (3) is respectively fixed below the two sides of the backrest (2), the front part of the fixed plate (3) is provided with a sliding pin (11) which can be clamped in the sliding slot (12), and the rear part of the fixed plate (3) is provided with a positioning slot (13) into which the positioning pin (6) can be clamped; and the fixed plate (3) is provided with an installation locking device by which the positioning pin (6) can be locked in the positioning slot (13). The adjustable seat for light aircrafts disclosed by the invention is small in whole organization volume, simple in structure, light in weight, and easy to adjust, and especially suitable to be used in light aircrafts.

A damping opening and closing structure easy to mount and demount and applicable to a furniture folding door comprises a demountable opening and closing device, sliding grooves and at least two furniture door bodies. The demountable opening and closing device comprises a support element and rotating wheels arranged on a movable element. The at least two furniture door bodies are the first furniture door body and the second furniture door body correspondingly. The first furniture door body and/or the second furniture door body are/is connected with the support element in a matched mode, and thefirst furniture door body and the second furniture door body are hinged to each other and are opened or closed in the sliding grooves in a linked sliding mode through the rotating wheels of the support element when being hinged to each other. The damping opening and closing structure further comprises at least one hinge, and the hinges are connected with the first furniture door body and/or the second furniture door body in a matched mode and provided with dampers, and the first furniture door body and the second furniture door body are opened or closed in the sliding grooves in a damping mode through the dampers of the hinges when being hinged to each other. Through structural improvement, the damping opening and closing structure has high practicability.

The invention relates to a lower tube base buoyancy locking mechanism of a lead-based reactor fuel component. The mechanism comprises a reactor core grid plate, a lower tube base, a floating sliding cylinder and ball anchors, wherein a through pore is formed in the reactor core grid plate; a plurality of locking grooves are formed in the inner wall of the pore along a circumferential direction; the lower tube base is positioned and inserted into the pore of the reactor core grid plate; a plurality of ball anchor holes are formed in the lower tube base along a circumferential direction in an area of the lower tube base inserted into the reactor core grid plate; the floating sliding cylinder is coaxially arranged inside the lower tube base and can make vertical axial movement along with buoyancy; a plurality sections of chutes are formed in the outer wall surface of the lower part of the floating sliding cylinder; and a plurality of ball anchors are respectively limited between the ballanchor holes in the lower tube base and the plurality sections of chutes in the floating sliding cylinder and can only make horizontal axial movement along the ball anchor holes in the lower tube base. According to the mechanism, the ball anchors are externally pushed and clamped into the locking grooves of the reactor core grid plate through a lower tube base through hole through buoyancy under push of the plurality sections of chutes of the floating sliding cylinder, so that the ball anchors are positioned among the reactor core grid plate, the lower tube base and the floating sliding cylinder in a stop pin mode, and mutual movement of the three components can be limited.

The invention discloses an integrated stove with a fast switching mode, and the integrated stove with the fast switching mode used to solve the problem that a large space is occupied because an existing induction cooker and a stove head are separately arranged. The integrated stove comprises a stove body, the stove body comprises a base and a panel installed at the upper end of the base, a throughhole is formed in the panel, the through hole is matches with a heating module for cooking, and the heating module comprises an installation frame, a gas stove head and an induction cooker; and the gas stove head and induction cooker are respectively installed at the upper and lower sides of the installation frame, and a drive mechanism is installed in the base to drive the heating module to rotate and/or lift so that the gas stove head and/or induction cooker can be exposed from the panel for cooking.

The invention discloses a side door opening-closing system of a hopper car. The hopper car is of a side door opening-closing structure; each set of side doors is oppositely provided with a corresponding set of side door opening-closing mechanism along the longitudinal direction of the hopper car; each set of the side door opening-closing mechanisms comprises a worm transmission mechanism and crankand connecting rod mechanisms; each of the worm transmission mechanisms comprises a rotating hand wheel, and a conversion gear set, a transmission rod, a helical gear set, worm gear assemblies and worm gear shafts which are driven by the rotating hand wheel for sequential transmission; the crank and connecting rod mechanisms are two-coupling crank and connecting rod mechanisms with motion dead centers; and each set of the side door opening-closing mechanisms is provided with a corresponding two-stage stop device. The side door opening-closing system of the hopper car utilizes the worm transmission mechanisms with a relatively-large transmission ratio and performs unloading by gravity; two side doors at one end are opened at one time, and the unloading efficiency is high; the stop devicescan realize the stop by stepping on pedal levers while operating the hand wheels; the opening-closing mechanisms realize the self-locking function of the system by virtue of the self-locking characteristic of worm gears and worms with the motion dead centers and the stop devices; and the two-stage stop devices further improve the locking performance and prevent the failure of locking.

The invention relates to a compartment door locking mechanism of a side-door compartment and belongs to the field of goods vehicles. A compartment body is provided with a compartment door body on the lateral side. Pull hooks are fixed to two ends of the lower edge of the compartment door body. Each pull hook consists of a first hook arm, a second hook arm and a hook shaft. The compartment door locking mechanism comprises a lock hook, a tension spring adjusting seat, a pull rod, a reversing device and a hydraulic device. The tension spring adjusting seat is disposed in the middle of the pull rod. One end of the pull rod, facing to the corresponding pull hook is connected with the middle of the lock hook. One end of the lock hook forms a hook head matching with a hook shaft. One end of the pull rod, facing to the reversing device, is connected with the reversing device. The reversing device is connected to a compartment floor beam and the hydraulic device. The compartment door locking mechanism is characterized by further comprising a lock hook seat. The lock hook seat is fixed to the compartment floor beam at the position corresponding to the lock hook. The lock hook seat is provided with a lock hook seat cavity. The lock hook corresponds to the inside of the lock hook seat cavity. The other end of the lock hook is connected with the lock hook seat. The compartment door locking mechanism has the advantage that the compartment door body can be reliably locked to prevent goods from coming out.

The invention provides a connector, a contact member thereof and a lock sleeve of the contact member. The connector comprises a shell and the contact member; the contact member is arranged in the shell and comprises the lock sleeve; the lock sleeve comprises a center channel through which a cable passes from front to back; and a lateral channel for enclosing and taking out the cable in a direction vertical to the axis of the center channel is formed in the lateral wall of the lock sleeve. The lateral channel for enclosing and taking out the cable in the direction vertical to the axis of the center channel is formed in the lateral wall of the lock sleeve of the connector provided by the invention, so that the cable in the center channel can be taken out through the lateral channel when the lock sleeve is damaged and needs to be replaced or repaired; separation of the lock sleeve and the cable is facilitated; the lock sleeve is relatively convenient to maintain and replace; the cable does not need to be cut off; the use cost is also reduced; and waste is avoided.

A horn nozzle anti-loosening apparatus and an anti-loosening method. The apparatus comprises a first lock body (1) and a second lock body (2) with semicircular cylindrical inner walls; locking components arranged on the first lock body (1) and the second lock body (2); locking rings (4) arranged on the inner walls of the first lock body (1) and the second lock body (2); a communicating joint (9) that matches the inner walls of the first lock body (1) and the second lock body (2); a horn nozzle (8) connected to the communicating joint (9); and anti-slip pads (6) installed on the inner walls of the first lock body (1) and the second lock body (2). An installation slot is formed between a front end of the communicating joint (9) and a horn side wall (82); or a bump (81) is arranged on the horn mouth, and an installation slot is formed between the bump and the horn side wall (82) or the front end of the communicating joint (9). The installation slot is used for clamping the lock rings (4). The anti-loosening method corresponds to the horn nozzle anti-loosening apparatus. The horn nozzle anti-loosening method and the apparatus are convenient and useful, and can effectively prevent an electrical device losing its explosion-resistance protection due to a horn nozzle being loosened by hand or by means of a non-specific tool.

The invention relates to the field of offshore oil drilling and production equipment, and particularly discloses an underwater Christmas tree mounting and recovery tool. The underwater Christmas treemounting and recovery tool comprises a tool inner barrel, a tool outer barrel, a guide barrel, a locking block outer sleeve, a bottom plate, a driving ring and a locking block. The spiral descending of the guide barrel can be realized through the matching between spiral guide holes in the guide barrel and guide pins on the tool outer barrel, therefore, the driving ring is driven to descend axially, and locking blocks are driven to extend out, so that locking between the tool and a Christmas tree is achieved; and according to the underwater Christmas tree mounting and recovery tool, the lockingblocks extend out through a mechanical structure, so that locking between the mounting and recovery tool and the Christmas tree is achieved, the problem that locking fails due to the fact that hydraulic work is abnormal when a traditional tool drives the locking blocks to be locked through hydraulic oil is solved, and therefore, the locking safety between the underwater Christmas tree mounting and recovery tool and the Christmas tree is improved.

The invention discloses a rear door locking device of a self-unloading muck truck and relates to the technical field of special vehicle manufacturing. The rear door locking device comprises a lock hook used for locking a rear door, wherein the rear door is hinged to the upper portion of a compartment, the lock hook is connected with a rigid linear reciprocating mechanism installed at the bottom of the compartment, and the motion direction of the linear reciprocating mechanism is the same as the width direction of the compartment; a lock catch capable of being buckled with or separated from the lock hook is arranged at the bottom of the rear door; a sealing rubber strip in press fit with the rear door is fixed to the tail of the compartment. The problems that an existing rear door locking device of the self-unloading truck loses efficacy easily, and a rear door is not sealed tightly are solved.