The object of the present invention is to provide a bridge cutting machine with a relatively long service life.
In order to achieve the above purpose, the present invention adopts the following technical solutions:
A bridge cutting machine includes a base, wherein the base is provided with a longitudinal moving assembly and a table, the longitudinal moving assembly is provided with a lateral moving assembly, and the lateral moving assembly is provided with a cutting assembly. The cutting assembly is located above the workbench, and the longitudinal movement assembly includes a longitudinal movement motor, a transmission rod drivingly connected to the longitudinal movement motor, and support bases located on both sides of the workbench, respectively. The support bases are provided with longitudinal moving racks and wheel rails arranged in parallel with each other. The driving rods are fixedly connected with the longitudinal moving gears which are respectively engaged with the longitudinal moving racks, and the driving rods are rotated. The track wheels are respectively matched with the wheel tracks.
As an improvement of the present utility model, a trapezoidal groove or a V-shaped groove is provided on a rim of the track wheel, and the wheel rail is inserted into the trapezoidal groove or the V-shaped groove.
As an improvement of the present utility model, the longitudinal shift assembly further includes a longitudinal rail box located above each of the support seats, and each of the longitudinal shift gears and each of the rail wheels are respectively located on the corresponding longitudinal rails. In the box, two push rods arranged in parallel with the transmission rods are fixedly connected to the inner cavity of the longitudinal rail box, and the two push rods are respectively located on two sides of the corresponding rail wheels and abut against each other. Corresponding on the track wheel.
As an improvement of the present invention, the push rod is a rubber rod.
As an improvement of the present utility model, the traverse assembly includes a cross beam fixedly connected to the corresponding longitudinal rail box at both ends and a carriage slidingly connected to the cross beam. The cross beam is provided with the cross beam. A traverse rack arranged in parallel with the cross beam, a traverse motor is disposed on the carriage, and an traverse gear is directly or indirectly connected to the output shaft of the traverse motor, and the traverse gear and the The traverse racks mesh with each other.
As an improvement of the present utility model, a limit assembly for limiting the sliding travel of the carriage on the cross beam is provided on the cross beam, and the limit assembly includes a fixed connection to the cross beam and a distance from the cross beam. The guide bar arranged in parallel with the cross beam, the first limit block and the second limit block which are slidably connected to the guide bar, two first pulleys which are rotatably connected to the cross beam, and two respectively rotatably connected. A second pulley on the beam, a first steel rope wound between two of the first pulleys, and a second steel rope wound between two of the second pulleys, two of the The connection between the first pulley and the connection between the two second pulleys are respectively arranged in parallel with the guide bar, and the first steel rope is fixedly connected to the first limiting block and is inserted between On the second limit block, the second steel rope is fixedly connected to the second limit block and interspersed with the first limit block. A first locking screw that presses the second steel rope on the guide bar, and the second limiting block is provided with To the first rope guide bar pressing on the second locking screw.
As an improvement of the utility model, the cutting assembly includes a lifting cylinder with a cylinder fixedly connected to the carriage and a piston arranged vertically, and a lifting frame fixedly connected to a piston rod of the lifting hydraulic cylinder. A cutting motor fixedly installed on the lifting frame and a cutting piece drivingly connected to the cutting motor, the lifting frame has a guide post slidingly connected to the sliding frame.
As an improvement of the present utility model, the cutting motor and the cutting blade are drivingly connected to each other through a pulley assembly.
With the above technical solution, the utility model has the following beneficial effects:
1. The longitudinal movement assembly of the present utility model is provided with a longitudinal movement gear and a track wheel, which effectively reduces the friction during the longitudinal movement and has a relatively long service life. At the same time, compared with the screw rod, the gear can withstand the relative thrust Larger, further improving the service life of the bridge cutting machine.
2. By setting a limit assembly, when one of the limit blocks shifts under the impact of the carriage, the position of the other limit block will also change accordingly, ensuring that the limit stroke is always the same, which effectively improves Cutting accuracy.