Hydraulic apparatus for stretching conductors for power lines

A hydraulic apparatus for stretching conductors for power lines comprising:

• a variable displacement hydraulic pump (10) that supplies, by means of a hydraulic fluid, a hydraulic motor (11) with a closed circuit connection;
• a displacement regulation system (15) of said hydraulic pump (10);
• a regulation system (20) of said hydraulic apparatus;
• characterized in that said regulation system (20) comprises:
• an inlet (21) that receives said hydraulic fluid that supplies said hydraulic motor (11);
• a first outlet (22) that supplies said displacement regulation system (15);
• a second discharge outlet (23);
• a flow limiter (30) connected to said inlet (21);
• a regulatable valve (31) connected to said flow limiter (30);
• a tap (36) connected between an outlet of said regulatable valve (31) and said first outlet (22);
• a measurement instrument (33) connected to the outlet of said regulatable valve (31), to measure a regulation pressure of said regulation system (20);
• a safety valve (34) connected to the outlet of said regulatable valve (31), the outlet of which is connected to said second discharge outlet (23);
• wherein said regulation system (20) comprises a single solid hydraulic block.