40 results about "Guardrail height" patented technology

The invention discloses a rotary car top guard. A vertical rod and a movable rod are arranged separately with one being above the other, so that the movable rod of the guard can rotate to drive a second cross rod to be folded to be coincident with a first cross rod, so that the height of the guard is lowered and the guard can be adapted to the condition that the space between a car top and a host is small when a machine-room-less elevator stops at a top floor and meets the arrangement condition that the space above the car top is small without influencing normal operation of a car. The movable rod of the guard can be opened to reach the place above the vertical rod through rotation, thus the height of the guard is increased to meet the requirement on the height of the guard in the standard; and a limit switch inhibits the elevator car from operating, thus the safety of a worker carrying out overhaul or other operations at the elevator car top is ensured.

The invention discloses a height-adjustable crane guardrail which comprise a pillar fixed to a bottom plate, wherein a fixing guardrail part is arranged at the upper end of the pillar, and is in a rectangular frame structure; sliding rails are arranged at the left and right inner walls of the fixing guardrail part; sliding blocks are arranged on the sliding rails; a cross rod is arranged between the sliding blocks; a plurality of stop rods arranged in a spaced manner are fixed at the upper end of the cross rod; the stop rods penetrate through the upper end of the fixing guardrail part and is connected with a lifting rod at the upper end of the fixing guardrail part; a plurality of rectangular grooves are uniformly formed in the two stop rods positioned at the outer sides; dead locking devices matched with the rectangular grooves are arranged at the upper end of the fixing guardrail part; and a plurality of auxiliary stop rods are arranged at the lower end of the cross rod, and penetrate through the lower end of the fixing guardrail part to extend into grooves of the pillar. The height-adjustable crane guardrail is simple in structure, reasonable in design and convenient to use; the height of the height-adjustable crane guardrail can be adjusted freely; the requirement on the protection height is met; the safe fixing function is exerted; and the height-adjustable crane guardrail is applicable to various working occasions of various cranes.

The invention provides a construction hanging basket with negative bending moment in the limited space of the middle girder of a T-beam and its use method. There are foldable third guardrails and second guardrails on the side. There are multiple steel wire ropes on the third guardrail and the second guardrail. The ends of the steel ropes are equipped with hooks. Foldable guardrails are used to facilitate the hanging basket to enter the T beam. In the limited space of the beam, the screw rod is used to support the beam shoe of the T-beam, and the hook is hung on the stirrup of the T-beam. The upper-hanging and lower-bracing structure makes the basket more stable as a whole. The adjusting screw uses T-beams of different widths. Beam boots have a wide range of applications, and the height of the guardrails on both sides is different, which is convenient for tensioning equipment to enter and exit. It has multiple protections, is stable and reliable, and has low cost. It is suitable for popularization and use.

The invention discloses a semi-rigid composite beam anti-collision barrier and a construction method thereof. The semi-rigid composite beam anti-collision barrier comprises a main body made of ecological nano-particle reinforced cement-based composite material and an ultra-high ductility cement-based composite material. The prepared protective layer is formed by composite pouring of the main body and the protective layer through a construction method. The main body accounts for 2 / 3-3 / 4 of the cross-sectional height of the composite beam anti-collision barrier, and the protective layer accounts for 1 / 4-1 / 3 of the cross-sectional height of the composite beam anti-collision barrier. The semi-rigid composite beam anti-collision guardrail of the present invention has extremely high strength and durability, can better exert the safety function of the anti-collision guardrail, reduce the maintenance times of the anti-collision guardrail, and prolong the service life. Small cracks will produce a self-healing effect after the load disappears, which greatly improves the service life of the semi-rigid composite beam crash barrier.

The invention provides a medical trolley with a segmented guardrail. The medical trolley comprises a trolley body, the segmented guardrail and at least one extension interface part; the segmented guardrail is fixedly arranged on the upper end surface of a table board of the trolley body; a yielding notch allowing installation of each extension interface part is formed in the segmented guardrail, and each extension interface part is fixedly arranged on the table board and located in the corresponding yielding notch in the segmented guardrail; and the top of the highest part of the segmented guardrail is higher than each extension interface part. According to the medical trolley, the guardrail is arranged on the table board of the trolley body, on one hand, objects on the table board are prevented from falling off during using, and on the other hand, each extension interface part lower than the guardrail is protected from being broken off in a transporting process. With adoption of the medical trolley with the segmented guardrail, on one hand, production cost is reduced, on the other hand, product quality is guaranteed, use demands of a hospital are met, and on the other hand, packing volume is reduced and transporting cost is reduced.

The present invention provides a method of using a liftable safety guardrail device, which adopts a guardrail arranged between adjacent fixed columns and a guardrail height locking mechanism. The guardrail includes a fixed guardrail and a movable guardrail, and the movable guardrail is arranged on the Above the fixed guardrail, the height of the movable guardrail can be adjusted according to the needs. When there is soil borrowing and excavation at the edge of the foundation pit or on the trestle, there is no need to install the guardrail to provide operating space for the normal use of machinery and equipment. When the device is removed, it is only necessary to lower the movable guardrail to the required height, and use the guardrail height locking mechanism to lock the movable guardrail on the fixed column; during the operation of the mechanical equipment, the lowered height of the movable guardrail can still be used. The function of the guardrail is maintained; after the operation of the mechanical equipment is completed, the normal height of the movable guardrail can be quickly, conveniently and safely restored, thereby effectively avoiding the operation state of the edge without a guardrail and reducing the safety risk of the edge operation.

The invention relates to highway guardrail height rapid detection equipment and a detection method thereof. The highway guardrail height rapid detection equipment includes a moving base, and further includes a height adjustment part and a dynamic detection part which are arranged on the moving base; the dynamic detection part includes a telescopic probe, a guide sleeve, a sliding column, a guide wheel, a driving resistor, a driven resistor, a reminding component and an energy component, wherein the telescopic probe is arranged on the height adjustment part and abuts against the inner side faceof a guardrail, the guide sleeve is arranged on the height adjustment part, the sliding column is slidably connected with the guide sleeve, the guide wheel is arranged at the lower end of the slidingcolumn and abuts against the top face of the guardrail, the driving resistor is arranged on the sliding column, the driven resistor is arranged on the guide sleeve and is in contact with the drivingresistor, and the reminding component and the energy component are arranged on the height adjustment part; and both the telescopic probe and the reminding component are connected with the energy component, and the driven resistor is connected with the reminder component. The moving base is pushed to move along the guardrail during detection, by observing the working state of the reminding component, whether the guardrail meets the requirements or not can be determined, the detection time is short, the detection speed is high, and the detection efficiency can be effectively improved.

The invention relates to a bridge with guardrail height adjustable. The bridge with the guardrail height adjustable comprises a bridge matrix (1) and multiple guardrail units (2) arranged on the bridge matrix (1), wherein each guardrail unit (2) comprises two fixed sleeve upright posts (4) which are bilaterally and symmetrically fixed on the bridge matrix (1) as well as an upper cross beam (21) and a lower cross beam (22) which cross over, extend and exceed the two fixed sleeve upright posts (4) for half of the length between the two fixed sleeve upright posts (4), the upper cross beam (21) and the lower cross beam (22) are respectively provided with a circuit device and are fixedly connected by virtue of a vertical handrail (23); and a screw hole matched with a vertical stud (43) by virtue of a screw thread is formed in each of the two fixed sleeve upright posts (4), and the upper end of the vertical stud (43) is inserted into the upper cross beam (21) to be axially and fixedly connected with the upper cross beam (21) by virtue of an upper thrust bearing (431) and a lower thrust bearing (432).