Operator compartment protecting device for construction vehicles

An operator compartment protecting device, said device being adapted to be mounted beside and above an operator compartment on a vehicle body of a construction vehicle, said device comprising:

• at least one support adapted to extend upwardly from the vehicle body;
• a pair of beam members secured to an upper end portion of said at least one support in such a manner that they extend along opposite sides of the operator compartment, said beam members forming an opening therebetween above the operator compartment with the distance between said beam members being at least slightly greater than the corresponding dimension of the operator compartment;
• a ceiling plate releasably secured to at least said pair of beam members, whereby upon said ceiling plate being released from said at least said pair of beam members the operator compartment can be lifted through the opening between said beam members;
• and
• a plurality of tubular guides fixed to a lower surface of said ceiling plate, each of said tubular guides being adapted to telescopically receive therein a respective one of a plurality of columnar support members mounted at spaced apart locations on an upper surface of the operator compartment.

A construction vehicle having a vehicle body, an operator compartment releasably positioned on said vehicle body, and an operator compartment protecting device mounted to said vehicle body so as to be beside and above said operator compartment, said device comprising:

• at least one support extending upwardly from said vehicle body;
• a pair of beam members secured to an upper end portion of said at least one support in such a manner that they extend along opposite sides of the operator compartment, said beam members forming an opening therebetween above the operator compartment with the distance between said beam members being at least slightly greater than the corresponding dimension of the operator compartment;
• a ceiling plate releasably secured to at least said pair of beam members, whereby upon said ceiling plate being released from said at least said pair of beam members the operator compartment can be lifted through the opening between said beam members;
• and
• at least one laterally extending reinforcing member fixed to a surface of said ceiling plate, each reinforcing member having first and second longitudinally spaced apart end portions, a first force-transmitting adjusting block mounted on said first end portion, a second force-transmitting adjusting block mounted on said second end portion, each said force-transmitting adjusting block making contact with a side surface of a respective one of said beam members, whereby the positions of said first and second force-transmitting adjusting blocks with respect to the associated reinforcing member can be varied.

A construction vehicle having a vehicle body, an operator compartment releasably positioned on said vehicle body, and an operator compartment protecting device mounted to said vehicle body so as to be beside and above said operator compartment, said device comprising:

• at least one support extending upwardly from said vehicle body;
• a pair of beam members secured to an upper end portion of said at least one support in such a manner that they extend along opposite sides of the operator compartment, said beam members forming an opening therebetween above the operator compartment with the distance between said beam members being at least slightly greater than the corresponding dimension of the operator compartment;
• a ceiling plate releasably secured to at least said pair of beam members, whereby upon said ceiling plate being released from said at least said pair of beam members the operator compartment can be lifted through the opening between said beam members;
• and
• a plurality of columnar support members mounted at spaced apart locations on an upper surface of the operator compartment, each columnar support member protruding into a respective one of a plurality of tubular guides fixed to a lower surface of said ceiling plate.