Chimney demolition vehicle
A demolition apparatus including a main chassis, first and second front arms pivotally connected to the main chassis and comprising first and second wheel assemblies, respectively, a rear telescoping arm fixedly connected to the main chassis and comprising a third wheel assembly, first, second and third boom sections and a telescoping catwalk assembly, the first and second boom sections interconnected by a first hydraulic cylinder and the second and third boom sections interconnected by a second hydraulic cylinder, the first and second hydraulic cylinders comprising first and second resistances to movement, respectively, and, an excavator assembly pivotally connected to the main chassis, wherein the first, second and third wheel assemblies comprise first, second and third hydraulic motors, respectively, the first, second and third hydraulic motors are balanced and adapted to rotate the first, second and third wheel assemblies at a common speed, the first and second hydraulic cylinders are balanced and adapted to selectably extend and retract according to the smaller of the first and second resistances at a time when a pressure change is directed to the first and second cylinders.
1. A demolition apparatus comprising:
a main chassis;
first and second front arms pivotally connected to the main chassis and comprising first and second wheel assemblies, respectively;
a rear telescoping arm fixedly connected to the main chassis and comprising a third wheel assembly; and,
an excavator assembly pivotally connected to the main chassis, wherein the first, second and third wheel assemblies comprise first, second and third hydraulic motors, respectively, the first, second and third hydraulic motors are balanced and adapted to rotate the first, second and third wheel assemblies at a common speed.
2. The demolition apparatus of claim 1 wherein the first, second and third hydraulic motors are balanced by fluid communication between the first, second and third hydraulic motors.
3. The demolition apparatus of claim 1 wherein each of the first, second and third wheel assemblies are attached to the first front arm, the second front arm and the rear telescoping arm, respectively, via a combination yoke and spindle assembly, and each combination yoke and spindle assembly is adapted to permit movement of a wheel assembly in a vertical plane and a horizontal plane.
4. The demolition apparatus of claim 1 wherein the rear telescoping arm further comprises first, second and third boom sections and a telescoping catwalk assembly, the first and second boom sections interconnected by a first hydraulic cylinder and the second and third boom sections interconnected by a second hydraulic cylinder, the first and second hydraulic cylinders comprising first and second resistances to movement, respectively, the first and second hydraulic cylinders are balanced and adapted to selectably extend and retract according to the smaller of the first and second resistances at a time when a pressure change is directed to the first and second cylinders.
5. The demolition apparatus of claim 4 wherein the first and second hydraulic cylinders are balanced by forming a fluid connection between the first and second hydraulic cylinders.
6. A demolition apparatus comprising:
a main chassis;
first and second front arms pivotally connected to the main chassis and comprising first and second wheel assemblies, respectively;
a rear telescoping arm fixedly connected to the main chassis and comprising a third wheel assembly and first, second and third boom sections, the first and second boom sections interconnected by a first hydraulic cylinder and the second and third boom sections interconnected by a second hydraulic cylinder, the first and second hydraulic cylinders comprising first and second resistances to movement, respectively;
a telescoping catwalk assembly secured to the rear telescoping arm and adapted to extend and retract synchronously with the rear telescoping arm; and,
an excavator assembly pivotally connected to the main chassis, wherein the first and second hydraulic cylinders are balanced and adapted to selectably extend and retract according to the smaller of the first and second resistances at a time when a pressure change is directed to the first and second cylinders.
7. The demolition apparatus of claim 6 wherein the first and second hydraulic cylinders are balanced by forming a fluid connection between the first and second hydraulic cylinders.
8. The demolition apparatus of claim 6 wherein the first, second and third wheel assemblies comprise first, second and third hydraulic motors, respectively, the first, second and third hydraulic motors are balanced and adapted to rotate the first, second and third wheel assemblies at a common speed.
9. The demolition apparatus of claim 8 wherein the first, second and third hydraulic motors are balanced by fluid communication between the first, second and third hydraulic motors.
10. The demolition apparatus of claim 8 wherein each of the first, second and third wheel assemblies are attached to the first front arm, the second front arm and the rear telescoping arm, respectively, via a combination yoke and spindle assembly, and each combination yoke and spindle assembly is adapted to permit movement of a wheel assembly in a vertical plane and a horizontal plane.
11. A demolition apparatus comprising:
a main chassis;
first and second front arms pivotally connected to the main chassis and comprising first and second wheel assemblies, respectively;
a rear telescoping arm fixedly connected to the main chassis and comprising a third wheel assembly, first, second and third boom sections and a telescoping catwalk assembly, the first and second boom sections interconnected by a first hydraulic cylinder and the second and third boom sections interconnected by a second hydraulic cylinder, the first and second hydraulic cylinders comprising first and second resistances to movement, respectively; and,
an excavator assembly pivotally connected to the main chassis, wherein the first, second and third wheel assemblies comprise first, second and third hydraulic motors, respectively, the first, second and third hydraulic motors are balanced and adapted to rotate the first, second and third wheel assemblies at a common speed, the first and second hydraulic cylinders are balanced and adapted to selectably extend and retract according to the smaller of the first and second resistances at a time when a pressure change is directed to the first and second cylinders.
12. The demolition apparatus of claim 11 wherein the first, second and third hydraulic motors are balanced by fluid communication between the first, second and third hydraulic motors.
13. The demolition apparatus of claim 11 wherein each of the first, second and third wheel assemblies are attached to the first front arm, the second front arm and the rear telescoping arm, respectively, via a combination yoke and spindle assembly, and each combination yoke and spindle assembly is adapted to permit movement of a wheel assembly in a vertical plane and a horizontal plane.
14. The demolition apparatus of claim 11 wherein the first and second hydraulic cylinders are balanced by forming a fluid connection between the first and second hydraulic cylinders.
15. A demolition apparatus comprising:
a main chassis;
first and second front arms pivotally connected to the main chassis and comprising first and second wheel assemblies, respectively;
a rear arm fixedly connected to the main chassis and comprising a track and a third wheel assembly adapted for displacement within the track; and,
an excavator assembly pivotally connected to the main chassis, wherein the first, second and third wheel assemblies comprise first, second and third hydraulic motors, respectively, the first, second and third hydraulic motors are balanced and adapted to rotate the first, second and third wheel assemblies at a common speed.
16. The demolition apparatus of claim 15 wherein the first, second and third hydraulic motors are balanced by fluid communication between the first, second and third hydraulic motors.
17. The demolition apparatus of claim 15 wherein each of the first, second and third wheel assemblies are attached to the first front arm, the second front arm and the rear arm, respectively, via a combination yoke and spindle assembly, and each combination yoke and spindle assembly is adapted to permit movement of a wheel assembly in a vertical plane and a horizontal plane.
18. The demolition apparatus of claim 15 wherein the rear arm further comprises a wheel mount and first and second hydraulic cylinders, the third wheel assembly rotatably secured to the wheel mount, the first hydraulic cylinder connected to the main chassis and the second hydraulic cylinder, the second hydraulic cylinder connected to the first hydraulic cylinder and the wheel mount, the first and second hydraulic cylinders comprising first and second resistances to movement, respectively, the first and second hydraulic cylinders are balanced and adapted to selectably extend and retract according to the smaller of the first and second resistances at a time when a pressure change is directed to the first and second cylinders.
19. The demolition apparatus of claim 18 wherein the first and second hydraulic cylinders are balanced by forming a fluid connection between the first and second hydraulic cylinders.
20. The demolition apparatus of claim 15 wherein the third wheel assembly is adapted for linear displacement within the track.