Rock breaking machine and lubricating method

A rock breaking machine comprising:

• a body;
• an impact device inside the body for generating impact pulses in a tool that is connectable to the rock breaking machine;
• bearing members for supporting the tool onto the body of the rock breaking machine;
• a lubricating system for lubricating the bearing members, the lubricating system comprising at least one lubricant channel, and at least one lubricating device for feeding lubricant along the lubricant channel to the bearing members of the tool;
• the lubricating device comprising at least one lubricant container and a transfer device for feeding lubricant,
• the lubricant container being arranged inside the body of the rock breaking machine and being enclosed therein,
• and wherein
• the volume of the lubricant container is divided into a pressure space and a lubricant space by a dividing member, which is arranged to affect the volumes of the pressure space and lubricant space;
• the pressure space is connected to a pressure medium channel, which allows pressurization of the pressure space by feeding pressure medium therein;
• lubricant is storable in the lubricant space;
• the pressure of the pressure medium acting in the pressure space is arranged to pressurize the lubricant in the lubricant space by means of the dividing member;
• and the lubricant space is connected to a transfer device, which is arranged to control the feed of lubricant from the lubricant space into the lubricant channel;
• the transfer device comprises a feed element, which is arranged to receive a predetermined lubricant portion from the lubricant container and is arranged to feed the predetermined lubricant portion into the lubricant channel;
• the transfer device further comprises a control valve for controlling the operation of the feed element and including a first control position and a second control position, with in which the control valve allows the flow of lubricant through it in both control positions, said control valve being moved between the first and second control positions by the pressure of the feed space and lubricant space;
• and when the control valve is in the first control position it controls the loading of the predetermined lubricant portion into the feed element and when it is in the second control position it controls feeding of the predetermined lubricant portion into the lubricant channel.

A rock breaking machine comprising:

• a body;
• an impact device inside the body for generating impact pulses in a tool that is connectable to the rock breaking machine;
• bearing members for supporting the tool onto the body of the rock breaking machine;
• a lubricating system for lubricating the bearing members, the lubricating system comprising at least one lubricant channel, and at least one lubricating device for feeding lubricant along the lubricant channel to the bearing members of the tool;
• the lubricating device comprising at least one lubricant container and a transfer device for feeding lubricant,
• the lubricant container being arranged inside the body of the rock breaking machine and being enclosed therein,
• and wherein
• the volume of the lubricant container is divided into a pressure space and a lubricant space by a dividing member, which is arranged to affect the volumes of the pressure space and lubricant space;
• the pressure space is connected to a pressure medium channel, which allows pressurization of the pressure space by feeding pressure medium therein;
• lubricant is storable in the lubricant space;
• the pressure of the pressure medium acting in the pressure space is arranged to pressurize the lubricant in the lubricant space by means of the dividing member;
• and the lubricant space is connected to a transfer device, which is arranged to control the feed of lubricant from the lubricant space into the lubricant channel, and wherein the transfer device is arranged to feed lubricant at the moment the impact device stops generating impact pulses;
• the transfer device is arranged to control the feed of pressurized lubricant into the lubricant channel;
• the transfer device comprises a feed element including a push member arranged in a cylindrical feed space and arranged to be pushed in a first direction by means of a spring member;
• the transfer device further comprises a control valve for controlling the flow of lubricant from the lubricant space of the lubricant container to the feed element and being movable between a first control position and a second control position;
• and wherein the pressurized lubricant supplied through the control valve in the first control position is arranged to push the push member towards a second direction of movement against the force of the spring member;
• and when the control valve is moved into the second control position the push member driven by the spring member, pushes the lubricant from the feed space through the control valve into the lubricant channel.

A rock breaking machine comprising:

• a body;
• an impact device inside the body for generating impact pulses in a tool that is connectable to the rock breaking machine;
• bearing members for supporting the tool onto the body of the rock breaking machine;
• a lubricating system for lubricating the bearing members, the lubricating system comprising at least one lubricant channel, and at least one lubricating device for feeding lubricant along the lubricant channel to the bearing members of the tool;
• the lubricating device comprising at least one lubricant container and a transfer device for feeding lubricant,
• the lubricant container being arranged inside the body of the rock breaking machine and being enclosed therein,
• and wherein
• the volume of the lubricant container is divided into a pressure space and a lubricant space by a dividing member, which is arranged to affect the volumes of the pressure space and lubricant space;
• the pressure space is connected to a pressure medium channel, which allows pressurization of the pressure space by feeding pressure medium therein;
• lubricant is storable in the lubricant space;
• the pressure of the pressure medium acting in the pressure space is arranged to pressurize the lubricant in the lubricant space by means of the dividing member;
• and the lubricant space is connected to a transfer device, which is arranged to control the feed of lubricant from the lubricant space into the lubricant channel, and wherein the transfer device is arranged to feed lubricant at the moment the impact device stops generating impact pulses;
• wherein the transfer device is arranged to control the feed of pressurized lubricant into the lubricant channel;
• the transfer device comprises a feed element provided with a feed space for receiving a predetermined lubricant portion from the lubricant container as the transfer device is loaded for feeding lubricant;
• and the feed element comprises a push member arranged to push the lubricant portion provided in the feed space into the lubricant channel as the feed element is triggered according to a predetermined control strategy;
• and
• wherein the impact device is pressure medium operated;
• the transfer device is arranged to be loaded as the impact device is pressurized;
• and wherein the transfer device is triggered at the moment the impact device stops generating impact pulses and the pressure discharges therefrom;
• the transfer device further comprises a control valve for controlling the operation of the feed element and including a first control position and a second control position, in which both control positions the flow of lubricant through the control valve is allowed, said control valve being moved between the first and second control positions by the pressure of the feed space and lubricant space;
• and when the control valve is in the first control position it controls the loading of the predetermined lubricant portion into the feed element and when it is in the second control position it controls feeding of the predetermined lubricant portion into the lubricant channel.

A rock breaking machine comprising:

• a elongated body;
• an impact device inside the elongated body for generating impact pulses in a tool that is connectable to the rock breaking machine;
• bearing members for supporting the tool onto the elongated body of the rock breaking machine;
• a lubricating system for lubricating the bearing members, the lubricating system comprising at least one lubricant channel, and at least one lubricating device for feeding lubricant along the lubricant channel to the bearing members of the tool;
• the lubricating device comprising at least one lubricant container and a transfer device for feeding lubricant,
• the lubricant container being arranged inside the elongated body of the rock breaking machine and being enclosed therein,
• and wherein
• the volume of the lubricant container is divided into a pressure space and a lubricant space by a dividing member, which is arranged to affect the volumes of the pressure space and lubricant space;
• the pressure space is connected to a pressure medium channel, which allows pressurization of the pressure space by feeding pressure medium therein;
• lubricant is storable in the lubricant space;
• the pressure of the pressure medium acting in the pressure space is arranged to pressurize the lubricant in the lubricant space by means of the dividing member;
• and the lubricant space is connected to a transfer device, which is arranged to control the feed of lubricant from the lubricant space into the lubricant channel, and wherein the transfer device is arranged to feed lubricant at the moment the impact device stops generating impact pulses;
• the lubricant container and the transfer device are arranged one after another in the lubricating device, and the lubricating device is arranged transversely to the elongated body of the breaking machine;
• the transfer device comprises a feed element, which is arranged to receive a predetermined lubricant portion from the lubricant container and is arranged to feed the predetermined lubricant portion into the lubricant channel;
• the transfer device further comprises a control valve for controlling the operation of the feed element and including a first control position and a second control position, in which both control positions the flow of lubricant through the control valve is allowed, said control valve being moved between the first and second control positions by the pressure of the feed space and lubricant space;
• and when the control valve is in the first control position it controls the loading of the predetermined lubricant portion into the feed element and when it is in the second control position it controls feeding of the predetermined lubricant portion into the lubricant channel.