35results about How to "Ensure lifting safety" patented technology

The invention discloses a reinforcement cage lifting structure, which is welded to the inner ring of the main reinforcement ring of the reinforcement cage, and three steel wire ropes are respectively sleeved on the outside of the reinforcement cage at the lifting point A, the lifting point B and the lifting point C to tighten the reinforcement cage. Both ends of the steel wire rope are provided with collars, one of which passes through the other end collar and hangs on the hook, and the other end collar is locked together with the reinforcing hoop through a shackle. The present invention will be welded on the inner ring of the main reinforcement ring of the reinforcement cage. In this way, when lifting, the steel wire rope is tightened, and its inward side pressure is borne by the reinforcement hoop, and the main reinforcement is not stressed, so that the welding quality of the reinforcement hoop and the main reinforcement can be avoided. Accidents where the main reinforcement is detached from the reinforcement hoop due to poor performance.

The invention provides a safe and practical elevator for middle-aged and aged people without a car shaft and a machine room and relates to an elevator. An elevator car (9) is installed below a car roof cover (6), and a power driving device for mounting the elevator is mounted on the car roof cover (6). A storage battery (15) is connected to a permanent magnet direct current motor (8), the permanent magnet direct current motor (8) is connected with a bevel gear box (5) through a reducer (7), a transmission shaft (12), a coupling (11), a driving chain wheel (14), a chain (13), a driven chain wheel (10), and two cones with opposite rotating directions are mounted at the reversed vertical output shaft end of the bevel gear box (5). According to the safe and practical elevator, the car liftingis achieved through the cone rotation and climbing along a rack; and after the elevator completes user loading, the car lifts to the top end for use and is automatically charged. The shutdown and braking are performed through a linkage mechanism. The elevator is free of the car shaft and the machine room and free of barrier, is at a low speed and has a light load, and the car is suitable for use by middle-aged and aged people.

According to the crane boom, one end of a first limb rod and one end of a second limb rod are hinged to a rotary table, and the other end of the first limb rod makes contact with the other end of thesecond limb rod. A first lifting hook group is arranged at the other end of the first limb rod, and a second lifting hook group is arranged at the other end of the second limb rod. A first variable-amplitude winding mechanism bypasses the top end of a propeller strut, and the two ends of the first variable-amplitude winding mechanism are connected with a first variable-amplitude winch and the other end of the first limb rod respectively and used for driving the first limb rod to rotate around a hinge point in a variable-amplitude mode; a second variable-amplitude winding mechanism bypasses thetop end of the propeller strut, and the two ends of the second variable-amplitude winding mechanism are connected with a second variable-amplitude winch and the other end of the second limb rod correspondingly and used for driving the second limb rod to rotate around the hinge point in a variable-amplitude mode; a first hoisting winding mechanism bypasses the top end of the propeller strut, and two ends of the first hoisting winding mechanism are respectively connected with a first hoisting winch and the first lifting hook group and used for driving the first lifting hook group to lift; and asecond hoisting winding mechanism bypasses the top end of the propeller strut, and two ends of the second hoisting winding mechanism are respectively connected with the first hoisting winch and the second lifting hook group and used for driving the second lifting hook group to lift.

The invention discloses an anti-falling pipe fitting lifting device with a protection structure for aviation equipment production. The anti-falling pipe fitting lifting device comprises a base body, a driving assembly, an abutting part, a butt joint handle and a fixing part, wherein the driving assembly is mounted at the upper end of the base body through a bolt; a lifting rope is mounted at the output end of the driving assembly in a nested manner, and the lower end of the lifting rope is fixedly connected with a supporting part; meanwhile, the supporting part is connected with the outer end of the base body; and a first pull rope is mounted at the outer side of the base body in a nested manner, and the first pull rope is connected with the outer end of the supporting part. According to the anti-falling pipe fitting lifting device with the protection structure for aviation equipment production, the lifting rope drives the supporting part to upwards lift an object, the first pull rope moving to a corresponding state is wound along with the supporting part, then a limiting part at the tail end is driven to move in the opposite direction, so that the inner end of a pipe fitting is subjected to self-adaptive nested contact; and the positioning stability is continuously improved along with the increase of the height, therefore, the lifting safety is ensured.

The construction method comprises the steps that before a cast-in-place pile reinforcement cage is installed and concrete is poured, an isolation pipe is installed in a to-be-broken section of the cast-in-place pile head, the outer diameter of the isolation pipe is matched with the inner diameter of the reinforcement cage, and the length of the isolation pipe is not smaller than the height of the to-be-broken section; the bottom of the isolation pipe is flush with the bottom of the to-be-broken section; after the isolation pipe is installed, concrete is poured into the cast-in-place pile reinforcement cage to the top of the cast-in-place pile reinforcement cage, and the concrete formed in the isolation pipe of the to-be-broken section is a cast-in-place pile head; after the strength of the concrete meets the breaking requirement, a plurality of wedge holes are evenly formed in the bottom of the pile head of the cast-in-place pile in the circumferential direction, and a wedge is driven into each wedge hole till the pile head of the cast-in-place pile is broken by the wedges; and the broken cast-in-place pile head is hoisted out, and breaking of the cast-in-place pile head is completed. The main reinforcement of the cast-in-place pile head is effectively prevented from being damaged in the breaking process, and the time for breaking the cast-in-place pile head is remarkably prolonged.

The invention discloses an auxiliary device for disassembling and assembling an electric pole, which comprises a rope receiving machine, a first base, a guide frame, a second base, a support rod device and a limit device, and the first base is docked and locked with the second base , the first base is provided with a rope receiving machine, and the wire rope used to pull the utility pole is wound on the said rope receiving machine, and the end of the first base close to the second base is provided with a limit device, and the limit device and A support frame for supporting the steel wire rope is provided between the rope receiving machines, a support rod device corresponding to the position of the limit device is provided on the second base, a hydraulic cylinder is provided on the second base, and the support rod device Under the action of the hydraulic cylinder, it is slidingly connected with the second base. The disassembly and assembly process of the utility pole is realized through the cooperation of the rope receiving machine and the supporting rod device, which solves the problems of high cost and limited space of the current crane. The device can safely and quickly realize the upright and down of the utility pole. The safety of use is guaranteed.

The invention discloses a single-hoisting-ring hoisting prevention device and belongs to the technical field of oil drilling equipment. The single-hoisting-ring hoisting prevention device comprises stopping blocks arranged in lower slots of hoisting lugs, and is characterized in that the stopping blocks are fixed in the lower slots through first rotating shafts and provided with sensing components for monitoring the positions of hoisting rings, and trigger blocks are arranged on the inner walls of the lower slots; and the device further comprises a single-hoisting prevention component which comprises a controller, and the controller is connected with the sensing components in a radio mode and used for receiving signals sent by the sensing components to control starting and stopping of traveling blocks. The device can accurately judge whether hoisting rings on the two sides of a lift sub enter hoisting lug holes or not and then send commands for hoisting or non-hoisting, single-hoisting-ring hoisting can be effectively prevented, and hoisting safety is improved.

The invention discloses a safety protection device for controlling a self-discharging vehicle carriage. The safety protection device comprises a carriage lifting control rod and a limiting mechanism matched with the control rod to limit the control rod in controlling carriage descending. The limiting mechanism is provided with a limiting part for controlling the control rod. Based on a self-discharging vehicle power part, to guarantee carriage lifting safety, an oil line hydraulic oil flow control structure is installed on an oil line generally; by limiting the power machine control rod, the oil line control structure can well serve the effect of preventing hydraulic oil from flowing, abrupt change of the carriage position is avoided, and use safety of a whole vehicle is enhanced; when the carriage is lifted or descended, operation on the control rod can be facilitated, the carriage can be lifted or descended according to the operation requirements, operation procedures and labor intensity of operators are reduced, and the safety protection device is flexible and convenient to operate and can perform safety protection on the carriage which is at a random overturning angle.

The invention discloses a construction method of a large-span through type rigid tied bar steel arch bridge. The steel arch bridge comprises a bridge superstructure, a bridge substructure and a bridgebearing. The construction method comprises the following steps that construction of the bridge substructure is conducted; sectional prefabrication of the bridge superstructure is conducted; integralassembling of the bridge superstructure is conducted; the bridge superstructure is overall hoisted through a floating crane; tugboats abreast tow the floating crane to sail in a main channel; the floating crane is subjected to load movement in a narrow river channel; and the bridge superstructure is overall mounted through position adjusting. According to the construction method, segmented-transporting of the bridge superstructure to a bridge site for overall assembling is not required, overall assembling of the overall assembling is completed in an overall assembling site of a wharf, and thenone floating crane is adopted to overall hoist the bridge superstructure to the bridge site for overall hoisting; and the scheme does not require building of a temporary support, the requirement of conditions of a construction site is low, impact on the surrounding environment is low, and the construction period is short.

The invention discloses a missile lifting appliance with a quick state regulation function and an automatic locking function. The missile lifting appliance comprises a lifting appliance girder, a positioning device, a lifting ring, a front lifting block and a rear safety device, wherein the positioning device is arranged below the lifting ring, and is used for fixing the lifting ring at a specific position of the lifting appliance girder; a plurality of positioning holes are formed in one side of the lifting appliance girder and respectively correspond to the centre-of-gravity positions of missiles of different types; the front lifting block and the rear safety device are respectively arranged at two ends of the lifting appliance girder. The missile lifting appliance is easy to operate and high in lifting safety, and has the advantage that quick regulation is realized.

The invention provides a double-protection pipe hoisting limit device for construction hoisting machinery, relates to the technical field of pipe hoisting, and includes a main assembly and an auxiliary assembly; a synchronous gear is installed inside the main assembly, and the main The mounting parts are respectively connected with the auxiliary mounting parts and the movable auxiliary frame through sliding rods; the peripheral of the auxiliary mounting parts is circular, and the peripheral of the auxiliary mounting parts is surrounded by six hoisting holes, and the flexible buffer block is connected with the side baffles The auxiliary parts are connected; the gear rod is connected to the inside of the main part, and the auxiliary part is connected to the movable auxiliary frame through the gear rod; the center part of the movable auxiliary frame is hollow, and the external part of the movable auxiliary frame is connected to the manual bolt; In the present invention, after the pipe fittings are respectively placed in the storage holes inside the main fitting through the loading and unloading openings, the left and right ends of the pipe fittings are respectively inserted into the limit inner holes set by the auxiliary fittings at both ends, and the two ends of the pipe fittings are connected by the auxiliary fittings The end is limited to prevent the pipe fittings from falling out of the loading and unloading port during hoisting, causing damage to the ground construction personnel, and making the pipe fittings loading and unloading more convenient.

The invention discloses a single-hoisting-ring hoisting prevention device and belongs to the technical field of oil drilling equipment. The single-hoisting-ring hoisting prevention device comprises stopping blocks arranged in lower slots of hoisting lugs, and is characterized in that the stopping blocks are fixed in the lower slots through first rotating shafts and provided with sensing components for monitoring the positions of hoisting rings, and trigger blocks are arranged on the inner walls of the lower slots; and the device further comprises a single-hoisting prevention component which comprises a controller, and the controller is connected with the sensing components in a radio mode and used for receiving signals sent by the sensing components to control starting and stopping of traveling blocks. The device can accurately judge whether hoisting rings on the two sides of a lift sub enter hoisting lug holes or not and then send commands for hoisting or non-hoisting, single-hoisting-ring hoisting can be effectively prevented, and hoisting safety is improved.

The invention relates to a suspension apparatus of a ship main engine. The suspension apparatus comprises wire ropes, and further comprises a suspension frame. A left end on the top of the suspension frame is connected with a first traction part through a first wire rope (111). A right end on the top of the suspension frame is connected with a second traction part through a second wire rope (211). A left end on the bottom of the suspension frame extends to a first suspension point (A) of a main engine (5) through a third wire rope (112). A right end on the bottom of the suspension frame extends to a fourth suspension point (D) of the main engine (5) through a fourth wire rope (212). A middle portion of the suspension frame is provided with space, wherein a middle wire rope passes through the middle portion of the suspension frame from top to bottom, and extends to a corresponding second suspension point (B) and a corresponding third suspension point (C) in the space. An upper end of the middle wire rope is connected with a third traction part. Compared to the prior art, the apparatus provided by the present invention has the following advantages that: the structure of the apparatus is simple; the pulley block is not required; the apparatus is easy to be used; the production cost of the apparatus is low; the suspension beam structure of the apparatus is solid and stable so as to provide longer service life.