| 摘要 |
A hurdle includes two base parts, each base part having a hollow space; a counterweight; a gear transmission arranged in each base part to displace the counterweight; tubular elements that include first second tubes displaceable telescopically relative to one another, each of the first tubes being fixed to one of the base parts; locking elements that lock the first and second tubes relative to one another; a bar connecting upper ends of the second tubes; a force-transmitting unit that extends from the hollow space in each base part and is connected to an associated second tube; and guides arranged in each base part, where the gear transmission engages both with the force-transmitting unit and with a driver for the counterweight, where the force-transmitting unit is received in the guides, and where the gear transmission is adapted to cooperate with openings provided in the force transmitting unit. |
| 主权项 |
1. A hurdle for hurdle racing, comprising:
two hollow base parts (1) arranged at a distance from one another and adapted to rest on a supporting surface, each base part comprising a hollow space; a counterweight (25) displaceably arranged in each base part (1); a driver means (21) for the counterweight (25); a gear transmission (22, 23, 40) arranged in each base part (1) and operatively connected to displace the counterweight (25); tubular elements (2, 3), each tubular element comprising a first tube (2) and a second tube (3) displaceable telescopically relative to one another, the first tube (2) and the second tube (3) extending vertically in relation to the supporting surface, each of the first tubes (2) being fixed to one end of an associated one of the base parts (1); locking elements (9, 10, 13, 15) that lock the first and second tubes (2, 3) relative to one another; a bar (4) connecting upper ends of the second tubes (3) situated furthest away from the associated base part (1); a strip-type force-transmitting means (20) that extends from the hollow space in each base part (1) and is connected to an associated second tube (3), the strip-type force transmitting means (20) provided with openings (29); and guides (24, 28) arranged in each base part (1), wherein the gear transmission (22, 23, 40) engages both with the strip-type force-transmitting means (20) and with the driver means (21) for the counterweight (25), wherein the strip-type force-transmitting means (20) is received in the guides (24, 28), and wherein the gear transmission (22, 23, 40) is adapted to cooperate with the openings (29) provided in the strip-type force transmitting means (20). |
