60results about How to "Compact and simplified drive structure" patented technology

A municipal bridge with guardrails capable of ascending and descending comprises a bridge base (1) and a plurality of guardrail units (2) installed on the bridge base (1). Each guardrail unit (2) comprises two fixing sleeve stand columns (4), an upper cross beam (21) and a lower cross beam (22), wherein the two fixing sleeve stand columns (4) are fixed to the bridge base (1) in a bilaterally symmetrical mode, the upper cross beam (21) and the lower cross beam (22) stretch across and extend beyond the two fixing sleeve stand columns (4), the upper cross beam (21) and the lower cross beam (22) are provided with circuit devices and are fixedly connected through vertical railings (23), screw holes in thread fit with vertical studs (43) are formed in the two fixing sleeve stand columns (4), and the upper ends of the vertical studs (43) stretch into the upper cross beam (21) and are axially and fixedly connected with the upper cross beam (21) through upper thrust bearings (431) and lower thrust bearings (432).

The invention relates to a bridge with liftable guardrails and capable of preventing over travel. The bridge comprises a bridge matrix (1) and a plurality of guardrail units (2) mounted on the bridge matrix (1), wherein each of the guardrail units (2) comprises two fixing sleeve vertical columns (4), an upper crossbeam (21) and a lower crossbeam (22), wherein the fixing sleeve vertical columns (4) of each guardrail unit (2) are fixed to the bridge matrix (1) in a left-right symmetrical manner; the upper crossbeam (21) and the lower crossbeam (22) of each guardrail unit (2) cross and extend to exceed the positions of the two corresponding fixing sleeve vertical columns (4); circuit devices are separately arranged on each upper crossbeam (21) and each lower crossbeam (22) and are fixedly connected by vertical guardrails (23); a screw hole being matched with a vertical screw column (43) is formed in each of every two fixing sleeve vertical columns (4); and the upper end of each of the vertical screw columns (43) extends into the corresponding upper crossbeam (21) to be axially and fixedly connected with the corresponding upper crossbeam (21) through an upper thrust bearing (431) and a lower thrust bearing (432).

A novel guardrail structure applicable to a bridge comprises a bridge base (1) and multiple guardrail units (2) installed on the bridge base (1). Each guardrail unit (2) comprises two fixed sleeve stand columns (4) bilaterally symmetrically fixed on the bridge base (1), and an upper beam (21) and a lower beam (22) crossed and extended to exceed the two fixed sleeve stand columns (4), and the upper beams (21) and the lower beams (22) are provided with circuit devices and fixedly connected by vertical railings (23); each of the two fixed sleeve stand columns (4) is internally provided with a screw hole in screw-thread fit with a vertical stud (43), and the upper ends of the vertical studs (43) extend into the upper beam (21) and are axially fixedly connected with the upper beam (21) through upper thrust bearings (431) and lower thrust bearings (432).

A bridge with lifting guard bars comprises a bridge body (1) and a plurality of guard bar units (2) installed on the bridge body (1). Each guard bar unit (2) comprises two fixing sleeving columns (4) fixed to the bridge body (1) in left and right symmetry, an upper cross beam (21) and a lower cross beam (22); the upper cross beam (21) and the lower cross beam (22) stretch across and extend beyond the two fixing sleeving columns (4); the upper cross beam (21) and the lower cross beam (22) are both provided with circuit elements and fixedly connected with each other through vertical handrails (23); each fixing sleeving column (4) is provided with a screw hole matched with a corresponding vertical screw column (43) in a threaded mode; and one end of each vertical screw column (43) extends into the upper cross beam (21) and is fixedly connected with the upper cross beam (21) through an upthrust bearing (431) and a downthrust bearing (432).