41results about How to "Avoid free fall" patented technology

A stockhouse arrangement for a metallurgical furnace comprises a set of storage bins (12) for granular material; a material feeding device (14) associated with said set of storage bins (12), the material feeding device (14) being arranged above said set of storage bins (12) and allowing to selectively fill each of the storage bins with granular material; and a raw material feed system (22) to convey raw granular material to the material feeding device (14). A respective weighing hopper (32) is arranged downstream of each storage bin (12) and comprising an outlet associated with a feeding gate(34). A charge conveying system (30) is provided for collecting and conveying material selectively discharged from the weighing hoppers through their respective feeding gate. The material feeding device (14) is configured to screen raw granular material arriving from said raw material feed system such that only material with desired granulometry is forwarded to the respective bin(s).

The invention includes a display positioning assembly comprising a support, a display supported by the support, and a balance mechanism carried by the display and operatively connected to the support. The invention also includes an article for selectively exposing a display comprising a generally planar support surface having a first side and a second side opposite the first side. A balance mechanism operatively connected to a display may be positionable between a storage position proximate the first side of the generally planar support surface and an exposed position proximate the second side of the generally planar support surface. The invention also includes an assembly for arresting the free fall of an object. The assembly may comprise an outer slide in sliding or rolling engagement with an inner slide, and a brake comprising at least one pivot member may be coupled to the inner slide.

A hydraulic cylinder having a rod safety device is provided, which can prevent a free falling of an arm and a bucket by fastening members when a welding part is broken to protect a cab and an operator. The hydraulic cylinder having a rod safety device which includes a cylinder rod (1) sliding within a set stroke range in a tube and composed of a rod head (1a) and a rod body (1b) joint-connected to the rod head (1a); a cover (3) connected by weld joint to one end part of the tube (2); an end cover (4) connected by weld joint to the other end part of the tube (2); a piston (5) fastened to one end part of the cylinder rod (1) to reciprocate along an inner periphery of the tube; and a connection means composed of a screw engagement part (10) formed in center parts of mutual contact surfaces of the rod head (1a) and the rod body (1b) in a shaft direction to joint-connect the rod head (1a) and the rod body (1b) by screw-engaging the rod head (1a) and the rod body (1b), and a weld joint part joint-connecting the rod head (1a) and the rod body (1b) by welding outer peripheries of the contact surfaces of the rod head (1a) and the rod body (1b).

The invention relates to a novel cigarette discharging and guiding device for a cigarette storage device. A cigarette shunting block (hereinafter referred to as a cigarette distributing block) fixed in a cigarette discharging storehouse of a YF17 cigarette storage device is transformed as a foldable and deformable assembly body, wherein the cigarette distributing block is divided into a left block and a right block along a vertical center line; the top of the cigarette distributing block is connected with a pin shaft; two plates are rotatably assembled and disassembled by taking the pin shaft as a center or are opened and closed by a bracket linkage mechanism; the two plates are folded and used as the cigarette distributing block; the two plates are unfolded and used as a cigarette receiving device support plate; the cigarette distributing block is driven by a belt which is arranged on the rear surface of a cigarette discharging channel; movement limit positions of the cigarette distributing block comprise positioning rods which are arranged on the upper end surface of the cigarette discharging channel and a packer hopper. The novel cigarette discharging and guiding device for the cigarette storage device is simple in structure; the cigarettes are received and guided between the discharging channel and a buffering channel by a telescopic plate; the cigarette discharging channel and the packer hopper extend along with the change of the width of the channel to receive and guide the cigarettes. By virtue of the novel cigarette discharging and guiding device for the cigarette storage device, the technical problem of automatically receiving the cigarettes by the whole channel when the cigarette receiving and packing unit is started can be solved.

The invention relates to a push rod type automatic turning device for legs, belonging to the technical field of turning of the legs of a lorry-mounted crane. The invention provides the push rod type automatic turning device for the legs, which is capable of realizing automatic turn of a leg cylinder within the range of 180 degrees in the vertical direction by using the retracting force of a piston rod of the leg cylinder of the lorry-mounted crane as a power. The invention has the technical scheme that the lower end of the piston rod of the leg cylinder is fixed with a piston rod bottom plate; a hand-pull beam is fixed with an idler; the idler is fixed on the shaft; a first wire rope fixating point is arranged below the idler and fixed on the hand-pull beam; the middle of the cylinder barrel of the leg cylinder is fixed with a guide plate; the guide plate is provided with a second wire rope fixating point; the middle of the guide plate is provided with a square hole; a square push rodis sheathed in the square hole of the guide plate; a stop plate of the push rod is fixed on the push rod; a second pulley is fixed on the upper end of the push rod; and a first pulley is arranged on the cylinder barrel of the leg cylinder and above the guide plate. The invention is applicable to the technical field of leg turning.

The invention particularly relates to a double-roller clip-rail anti-falling scaffold; a connecting frame is fixedly connected with a brake box; a guide rail is fixedly arranged on one side of the scaffold body; the guide rail is inserted in the brake box; a guide groove is arranged on the lateral wall of the brake box; a brake wheel shaft is arranged in the guide groove; a brake wheel is arranged on the brake wheel shaft; a back pressing wheel is erected on the brake box on the same side where the brake wheel is arranged; the back pressing wheel leans on one side wall body of the guide rail; a friction block is arranged on the other lateral side of the brake wheel; a ratchet wheel is fixed on the end surface of the brake wheel; the lateral wall of the brake box is hinged with a pawl; the bottom of the pawl is supported on the operating end surface of the ratchet wheel; the bottom end of the pawl is connected with a tension spring; the other end of the tension spring is connected on the external wall of the brake wall; the top end of the pawl is connected with a traction rope; the other end of the traction rope is extended out of the brake box and hung with an operating hammer on the end part; a vertical brake tension spring is arranged outside the brake box; the top end of the brake tension spring is fixed and the bottom end is connected on the brake wheel shaft.

A wire rope type fall arrester, including a rotating part, a braking device and a steel cable, the first end of the steel cable is connected to the rotating part; the steel cable includes a first winding ring and a second winding ring wound around the On the piece; the first restricting part of the restricting beam ring is sleeved on the first winding ring, and the second restricting part of the restricting beam ring is sleeved on the second winding ring, so that the steel rope is in the second restricting part and the first winding ring. One end has a fixed length and is wound on the rotating part; when the free end of the steel cable is pulled by an external force, and the steel cable wound on the rotating part is released in a direction away from the rotating part, the restraining beam ring is broken , to release the fixed length of the cable; where the external force is greater than or equal to the tension generated by the free fall of an adult. By releasing the fixed length of the steel cable, the rotating part is rotated and the braking device is driven to act, so that the rotation of the rotating part is slowed down or stopped.

The present invention provides a high safety factor anti-falling structure for a hopper, wherein the structure is used for a top packing type gasifier, and is provided for eliminating hidden danger caused by hopper falling due to rope breakage. The hopper anti-falling structure comprises a hopper and a pulling support. The hopper is connected with a pulling rope, such that the hopper can be lifted or lowered under the rope pulling effect. The pulling support is provided with vertical guide rails, wherein the guide rails are intervally provided with a plurality of snapping concave portions or snapping through holes. Pin passing through holes are arranged on side walls of the hopper, wherein the position of the pin passing through hole is corresponding to the guide rail. Locking pins are arranged inside the hopper, wherein the locking pins can snap into the snapping concave portions or the snapping through holes. When the rope is pulled to perform a pulling action, the locking pin can be driven to exit from the driving portion of the snapping concave portion or the snapping through-hole, and when the rope is broken, the locking pin can be driven to pass through the pin passing through hole to extend to the reposition portion of the snapping concave portion or the snapping through-hole. According to the hopper anti-falling structure of the present invention, the match of the locking pins and the guide rails is adopted, such that the hopper can be fixed on the guide rails when the pulling rope is broken so as to avoid free falling of the hopper.