The proposal relates to devices for drilling, preferably blast holes in quarries, namely moves to crawler drill rig. The drilling machine includes a frame 1 mounted on the frame of the machine room 2 and the mast 3, attached to the frame 4. The crawler crawler stroke comprises driving trolleys 5, each of which has a frame 6 crawler belt 7 connected to the frame balancers 8, actuator 9 to the drive wheel, the backup rolls 10 and the idler wheel balancer 11 is supported on the inside of the crawler belt 7, is involved in the movement of the machine and the stress arising from the movement of the machine, which are transmitted on their crawler belt 7. The balance is composed of two to tkov 12 mounted on bracket 13 Mounts 14 balance bar to the frame are formed as the axis 15 and placed in the frame coaxially to the axis of sleeves 16, 17. Each of the nodes is provided with the balancer attachment bonded to the axis and arranged along the edges for engagement with bogie frame the guides 18, 19 of longitudinal axis movement. On the frame 6 and the guides 18, 19 are fixed with the possibility of an interaction between the stops respectively 20, 21 and 22, 23. When moving the machine, especially when running at the drilling point with the raised mast, is required in many cases produce a reversal of the machine to reach the desired drilling point. When turning the machine inhibit caterpillar of one of the trucks. Thus on load balancers are as shown in the diagram figure 3. limiters 18, 19 prevent longitudinal movement of the axis of deformation and "disclosure" balancer attachment assembly from impact forces F (Fig. 6-7) preclude love spell axis relative to the frame and the bushing 6 and provide only balance the rotation about the axis. Thus, the proposed technical solution will improve the reliability and durability of the crawler.
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