Adjustable non-nail chock

The invention relates to fixing equipment for railway transportation wheel type equipment and belt type equipment, namely, an adjustable non-nail chock. The adjustable non-nail chock comprises an anti-skidding seat. Two ends of a beam are inserted in the anti-skidding seat and slide in the anti-skidding seat. The beam is supported by four connecting rods at two sides. A pair of connecting boards are connected between the four connecting rods at the two sides. A screw rod is connected between the two connecting boards. Each shovel type bottom chock comprises two side upright boards and a shovel board connected between the two side upright boards. The front ends of the two side upright boards are respectively provided with a slope. The shovel type bottom chocks are inserted in two outer sides of the anti-skidding seat through the two side upright boards. According to the adjustable non-nail chock, nails are not required for fixing, pretightening force is adjustable, disassembly and assembly are convenient, spee