BULLDOZER EQUIPMENT FOR WHEELED VEHICLES

Abstract

This utility model pertains to road construction machinery, specifically to earthmoving machines such as wheeled bulldozers, and can be used for both road construction and earthmoving, including in the mining industry. The bulldozer attachment for wheeled machines comprises a blade, a push frame pivotally connected to the blade, hydraulic cylinders for lifting the equipment, connected at one end via a pivot joint to the push frame and at the other end via a pivot joint to the base machine's load frame, and hydraulic cylinders for adjusting the blade's angle, pivotally connected at one end to the blade and at the other end to its push beams.The pushing frame consists of a solid crossbeam located between the front and rear wheels of the base machine and connected by a bolted connection to its load frame, two pusher beams located on the outer side of the wheels and connected to the crossbeam by hinge joints at its ends, and a central beam rigidly connected to the pusher beams. The blade is connected to the pushing frame by three hinges located on the same horizontal line; it is connected by one hinge to the central beam of the pushing frame and by two hinges to its pusher beams. Diagonals are installed on the pushing frame, hinged at one end to the blade, and at the opposite ends to its pusher beams. The connection of the hydraulic cylinders for lifting the equipment to the pushing frame is realized by means of hinges fixed on its central beam. The technical result consists in increasing the reliability of bulldozer equipment for wheeled machines. 2 fig.

Description

[0001] Field of technology to which the utility model belongs

[0002] The utility model relates to road construction machinery, namely to earthmoving machines such as wheeled bulldozers, and can be used for both road construction and earthmoving work, including in the mining industry.

[0003] Technology Level

[0004] A bulldozer equipment is known, comprising a blade, push bars, struts, pivotally connected to each other and located in the same plane, one of the struts is made of two pivotally connected rods, located respectively parallel and at an angle to the blade, and the second strut is in the form of a single rod, located at an angle to the blade, the rods of the struts, located at an angle to the blade, are pivotally connected to the push bars, while it is equipped with an adjusting mechanism installed on the free end of the rod, parallel to the blade, and connected to the blade bracket (RU 23887 U1, 20.07.2002, Bulletin No. 20, E02F 3 / 76).

[0005] A disadvantage of this bulldozer attachment is the hinged connection of the struts to the push beams, making this design insufficiently reliable under combined lateral and vertical loads. Furthermore, this design lacks elements that allow this bulldozer attachment to be mounted on vehicles with wheeled drive.

[0006] A bulldozer equipment is known, including a blade, a pushing frame connected to the blade by means of a hinge joint consisting of a horizontal pin installed in the eyes of the blade, from a shackle connected to the horizontal pin and having a vertical pin, pushers made in the form of hydraulic cylinders, the axes of the hinge fastening of which to the blade are located above the axis of the horizontal pin, hydraulic cylinders for lifting the blade, while it is equipped with a hydraulic cylinder for tilting the blade, the connection of the pushing frame with the blade is located from the longitudinal axis of the machine, in the pushing frame a socket is made with a trunnion mounted in the latter with the ability to rotate around its longitudinal axis and axially move, connected to the vertical pin, and on the shackle there are stops located with the ability to interact with the stops made on the blade (RU 2004706 C1, 15.12.1993, E02F 3 / 76, Bulletin No. 45-46).

[0007] The disadvantage of this bulldozer attachment is its lack of reliability. This is due to the fact that lateral forces concentrate the load on the central hinges, which can lead to failure of the metal structure near the pusher frame socket.

[0008] In addition, the location of the push frame on the inside between the wheels when moving, for example in mining conditions in quarries, does not provide protection for the wheels.

[0009] The closest to the declared bulldozer equipment for wheeled vehicles is the bulldozer equipment consisting of a bulldozer blade, a pushing frame connected through two hinge joints to the bulldozer frame, hydraulic cylinders for lifting the bulldozer equipment, connected at one end, through a hinge joint, to the pushing frame, at the other end, through a hinge joint, to the bulldozer frame, a hydraulic cylinder for turning the blade in a horizontal plane, connected at one end, through a hinge joint, to the blade, at the other end, through a hinge joint, to the pushing frame, a hydraulic cylinder for tilting the blade in a transverse vertical plane, connected at one end, through a hinge joint, to the blade, at the other end, through a hinge joint, to the pushing frame, a hydraulic cylinder for changing the cutting angle, connected at one end, through a hinge joint, to the blade, at the other end, through a hinge joint, with a pushing frame,wherein the bulldozer blade is connected to the pushing frame via a hinge joint with a hinge bearing mounted on a vertically located connection pin (RU 183089 U1, 11.09.2018, E02F 3 / 76, Bulletin No. 26).,

[0010] The disadvantage of this bulldozer attachment is its lack of reliability. This disadvantage stems from the fact that when lateral forces, as well as combined lateral and vertical forces, act on the blade, the load is concentrated at the point where the blade is directly attached to the push frame, which can lead to failure of the metal structure near the push frame socket. Another disadvantage is that when the end of the blade encounters an insurmountable obstacle, a large load is concentrated in the eyes of the blade rotation hydraulic cylinder, which can lead to their failure.

[0011] In addition, the location of the push frame on the inside between the wheels when moving, for example in mining conditions in quarries, does not provide protection for the wheels.

[0012] Disclosure of the essence of the utility model

[0013] The utility model is based on a technical problem consisting in the creation of bulldozer equipment for wheeled vehicles, characterized by the possibility of its installation on the cargo frame of the base machine between the front and rear wheels, the use of a pushing frame, ensuring the implementation of the maximum force of the blade during the development of various soils, including during the development of more durable soils, without damaging the main units, mechanisms and parts of the equipment and preventing possible deformations of the equipment elements under the maximum lateral component of the force acting on the blade.

[0014] The technical result is an increase in the reliability of bulldozer equipment for wheeled vehicles.

[0015] Achieving the above technical result is ensured by the fact that in the bulldozer equipment for wheeled machines, including a blade, a pushing frame pivotally connected to the blade, hydraulic cylinders for lifting the equipment, connected at one end, through a pivot joint, to the pushing frame, and at the other end, through a pivot joint, to the cargo frame of the base machine, the pushing frame consists of a solid cross beam located between the front and rear wheels of the base machine and connected by a bolted connection to its cargo frame, two pushing bars located on the outside of the wheels and connected to the cross beam by pivot joints at its ends, and a central beam rigidly connected to the pushing bars, while the blade is connected to the pushing frame by three hinges located on the same horizontal line, it is connected by one hinge to the central beam of the pushing frame and it is connected by two hinges to its pushing bars,The pushing frame is equipped with diagonals, hinged at one end to the blade and at the opposite end to its pushing beams, the connection of the hydraulic cylinders for lifting the equipment with the pushing frame is carried out by means of hinges fixed on its central beam.

[0016] Due to the implementation of a pushing frame consisting of a solid cross beam located between the front and rear wheels of the base machine and connected by a bolted connection to its cargo frame, two pushing bars located on the outside of the wheels and connected to the cross beam by hinged joints at its ends, and a central beam rigidly connected to the pushing bars, connecting the blade to the pushing frame by three hinges located on the same horizontal line, connecting the blade with one hinge to the central beam of the pushing frame and connecting with two hinges to its pushing bars, installing diagonals on the pushing frame, pivotally connected at one end to the blade, and at the opposite ends to its pushing bars, connecting the hydraulic cylinders for lifting the equipment to the pushing frame by means of hinges fixed on its central beam, the maximum force of the blade is realized when developing various soils,including when developing more durable soils, without damaging the main components, mechanisms and parts of the equipment, and also preventing possible deformations of equipment elements under the maximum lateral component of the force acting on the blade.

[0017] This allows to increase the reliability of bulldozer equipment for wheeled vehicles.

[0018] The design of the pushing frame, consisting of a solid cross beam, two pushing bars located on the outside of the wheels and connected to the cross beam by hinged joints at its ends, and a central beam rigidly connected to the pushing bars, makes it possible to create a powerful spatial pushing frame that ensures the implementation of maximum force by the blade when developing various soils.

[0019] At the same time, the location of the solid cross beam between the front and rear wheels of the base machine and the bolted connection to its cargo frame allows this equipment to be installed on a wheeled bulldozer.

[0020] In addition, the presence of two push bars located on the outside of the wheels, connected to the cross beam and the center beam, ensures that the sidewall of the wheel tires is protected from cuts or damage by sharp pieces of rock, construction debris or other objects, for example, when working in mining conditions.

[0021] By creating a power spatial pushing frame consisting of a solid cross beam, two pushing bars located on the outer side of the wheels and connected to the cross beam by hinged joints on it, and a central beam rigidly connected to the pushing bars, possible deformations of equipment elements under the maximum lateral component of the force acting on the blade are also prevented.

[0022] Due to the direct connection of the blade with the pushing frame by three hinges located on the same horizontal line, one of which connects the blade to the central beam of the pushing frame, and the other two connect it to its pushing bars, the most uniform distribution of forces transmitted to the power spatial pushing frame from the blade is ensured.

[0023] The braces, mounted on the push frame and pivotally connected at one end to the blade and at the other end to its push bars, allow for adjustment of the blade's tilt angle, securely holding the blade in position. When mounted on a push frame, which is a space-frame structure, the braces are less susceptible to deformation under the maximum lateral force acting on the blade.

[0024] When connecting the hydraulic cylinders for lifting the equipment to the pushing frame by means of hinges fixed on its central beam, they and their connection units are also least susceptible to deformation under the maximum lateral component of the force acting on the blade.

[0025] Brief description of drawings

[0026] The essence of the utility model is explained by the following drawings. Fig. 1 shows bulldozer equipment for wheeled vehicles, top view; Fig. 2 - bulldozer equipment for wheeled vehicles, side view.

[0027] Implementation of a utility model

[0028] The bulldozer attachment for wheeled machines includes a blade 1, a pushing frame, hydraulic cylinders 2 for lifting the equipment, and diagonals 3. Adjustable screw diagonals or hydraulic diagonals in the form of hydraulic cylinders are used as diagonals 3. The pushing frame consists of a solid cross beam 4 located between the front and rear wheels of the base machine and connected by a bolted connection to its load frame 5, two pushing beams 6 located on the outer side of the wheels, and a central beam 7 rigidly connected to the pushing beams 6. The pushing beams 6 are connected to the cross beam 4 by hinged joints at its ends. The diagonals 3 are hingedly connected at one end to the blade 1, and at the opposite ends to the pushing beams 6 of the pushing frame. The blade 1 is connected to the pushing frame by three hinges 8 located on one horizontal line, it is connected by one hinge to the central beam 7 of the pushing frame and by two hinges it is connected to its pushing bars 6.The hydraulic cylinders 2 for lifting the equipment are connected at one end, via a hinge joint, to the pushing frame, and at the other end, via a hinge joint, to the cargo frame 5 of the base machine. The connection of the hydraulic cylinders 2 for lifting the equipment to the pushing frame is accomplished by means of hinges 9, secured to its central beam 7. The bulldozer equipment for wheeled machines is mounted on the cargo frame 5 of the wheeled machine by means of a bolted connection of the cross beam 4 of the pushing frame to the said cargo frame 5.

[0029] The bulldozer equipment for wheeled vehicles operates as follows.

[0030] Bulldozer equipment for wheeled vehicles is used for both road construction and earthmoving work, including in the mining industry.

[0031] The bulldozer attachment for wheeled vehicles is mounted on the load frame 5 of the wheeled vehicle by means of a bolted connection of the cross beam 4 of the pushing frame with the said load frame 5. In this case, the cross beam 4 of the pushing frame is located between the front and rear wheels of the base vehicle, and the pushing bars 6 are located on the outer side of the wheels and are connected to the cross beam 4 by hinge joints at its ends. The hydraulic cylinders 2 for lifting the equipment are connected at one end, through a hinge joint, to the pushing frame, and at the other end, through a hinge joint, to the load frame 5 of the base vehicle. The connection of the hydraulic cylinders 2 for lifting the equipment with the pushing frame is performed by means of hinges 9, fixed on its central beam 7. The hydraulic cylinders 2 for lifting the equipment perform the lifting and lowering of the blade 1, rotating it and the pushing bars 6.Diagonal arms 3, pivotally connected at one end to blade 1 and at the other end to the pusher bars 6 of the pushing frame, adjust the tilt angle of blade 1 and lock it in place. Adjustable screw-type diagonal arms 3 are used for mechanically adjusting the tilt angle of blade 1, or hydraulic diagonal arms in the form of hydraulic cylinders.

[0032] When the wheeled vehicle is moving, the lower edge of the blade 1 is pressed into the ground by hydraulic cylinders 2 for lifting the equipment to the required depth, approximately 20-30 cm. When the movement continues with the blade 1 buried, the resistance from the cutting of the soil creates a stress in the blade 1, which is transmitted through three hinges 8 to the pushing frame. Due to the connection of the blade 1 to the pushing frame by three hinges 8 located on the same horizontal line, one of which is connected to the central beam 7 of the pushing frame and the other two it is connected to its pushing bars 6, an even distribution of the forces transmitted to the pushing frame from the blade 1 is ensured. Then, the force is transmitted through the crossbeam 4 of the pushing frame to the cargo frame 5 of the wheeled vehicle.In this case, thanks to the implementation of a pushing frame consisting of a solid cross beam 4, two pushing bars 6 located on the outer side of the wheels and connected to the cross beam 4 by hinged joints at its ends, and a central beam 7 rigidly connected to the pushing bars 6, a powerful spatial pushing frame is created, ensuring the implementation of the maximum force by the blade 1 when developing various soils.

[0033] During the curvilinear movement of a wheeled machine with a deep blade 1, a lateral force is generated acting on the blade 1, due to the use of a power spatial pushing frame consisting of a solid cross beam 4, two pushing bars 6 connected to the cross beam 4, and a central beam 7 rigidly connected to the pushing bars 6, possible deformations of the equipment elements are prevented at the maximum lateral component of such a force acting on the blade 1.

[0034] When a wheeled vehicle is in operation, for example, in mining conditions, the presence of two push bars 6 located on the outside of the wheels, connected to the cross beam 4 and the central beam 7, ensures protection of the side part of the wheel tires from cuts or damage by sharp pieces of rock, construction debris or other objects.

Claims

A bulldozer equipment for wheeled vehicles comprising a blade, a pushing frame pivotally connected to the blade, hydraulic cylinders for lifting the equipment connected at one end, through a pivot joint, to the pushing frame, and at the other end, through a pivot joint, to the load frame of the base machine, characterized in that the pushing frame consists of a solid cross beam located between the front and rear wheels of the base machine and connected by a bolted connection to its load frame, two pushing bars located on the outside of the wheels and connected to the cross beam by pivot joints at its ends, and a central beam rigidly connected to the pushing bars, wherein the blade is connected to the pushing frame by three hinges located on the same horizontal line, it is connected by one hinge to the central beam of the pushing frame and by two hinges it is connected to its pushing bars, diagonals are installed on the pushing frame,hinged at one end to the blade and at the opposite end to its pushing beams, the connection of the hydraulic cylinders for lifting the equipment with the pushing frame is made by means of hinges fixed on its central beam.

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