Cutting device for chap cutting in ground

FIELD: dredgers or soil-shifting machines for special purposes, particularly to cut chaps in ground.

SUBSTANCE: device comprises at least one cutter brought into rotation and at least one the first cutting member to cut ground during cutter rotation in the first direction. At least one the second cutting member for ground cutting rotated in the second direction opposite to the first one is installed on the cutter. At least one of the cutting members may be shifted from the first ground cutting position to the second diverted position. Executive tool to shift the cutting member between the first and the second positions is also provided.

EFFECT: increased cutting ability in both rotational directions, prevention of excessive cutting member wear.

12 cl, 2 dwg

 

The technical field to which the invention relates.

The present invention relates to a milling device for milling cracks in the ground in accordance with the restrictive part of paragraph 1 of the claims. Milling device of this type includes at least one driven in rotation of the cutter and at least one located on the first cutter of the milling element for the development of soil material during the rotation of the cutter in a first direction of rotation.

The level of technology

Milling device of this type is known from patent document FRG No. 3715977 C2. In this known milling device for circumferential periphery of the cutters are rigidly fixed milling teeth or cutters, which are used for development of soil material during the rotation of the cutter. In addition, the cutter are hinged teeth, which in its tilted position to hit clay material before the base platform installation cutters. While milling the teeth mounted on the cutter so that their impact milling is optimal only in a certain direction of rotation.

The invention

The problem to which the present invention is directed, is to create a milling device of the specified type that can be used as possible multilateral what follows.

In accordance with the invention the solution of this problem is achieved by creating a milling device having signs of a distinctive part of paragraph 1 of the claims. This milling device differs in that the cutter is at least one of the second milling element for the development of soil material during rotation in a second opposite direction of rotation, at least one milling element is mounted for permutation between the first position for the development of soil material and the second designated position, and a control device for shifting the milling element between the first and second position.

The basic idea of the invention is that the cutter rotating about an axis of rotation that is set as the first milling element and the second milling element, whereby during the rotation of the cutters in the first direction of the development of soil material produces a first milling element, and at its rotation in a second, opposite direction the development of soil material produces a second milling element. At least one milling element is mounted for swap with actuator between a first position in which it can razrabatyvayutsya material on the wall of the slit, in the designated second position, in which preferably, the ground is not possible.

Preferably the milling elements are arranged one behind the other in the direction of the circumferential periphery of the cutter. Further, preferably mounted with the possibility of replacing the milling element is located so that at least one part is in the first position radially farther away from the axis of rotation of the cutter than the second position. In particular, the milling elements are arranged in such a way that you installed with the possibility of replacing the milling element in the first position at least partially protrudes farther in the radial direction of the cutter in comparison with the corresponding second milling element. In contrast, in the second position corresponds to a different milling element at least partially protrudes radially farther compared to reinstall milling element. Due to this, depending on the position you want the milling element primer on the wall cracks is developed or resetting milling element, or other milling element. This is achieved by particularly multilateral possibility of using cutters.

Permutation of the milling element that is installed with the possibility of permutations, preferably Ave is performed depending on the direction of rotation of the cutter. If you want to reset is the first milling element, then the permutation is preferably such that during the rotation of the cutter in a first direction of rotation of the first milling element is in the first position for the development of soil material, and when rotated in an opposite second direction of rotation it is allocated to the second position. If you want to reset is the second milling element, when rotating in the second direction of rotation it preferably means in its first position. Such shift depending on the direction of rotation creates the possibility that when reversing the rotation of the cutter in contact with the wall of the slit and is developing her soil is always only one milling element, which is provided for the direction of rotation. Corresponds to a different milling element at this time is in the designated position, where it is protected from the effects usually very solid soil material subject development. This ensures operation of the cutter with good milling capacity in both directions of rotation and at the same time prevents excessive wear of the milling elements.

In accordance with the invention, the milling device in the preferred exemplary embodiment differs in that the first milling element and the second milling element is made with the possibility of rearrangement. This ensures the creation of a milling device, particularly flexible in use. This preferably with actuator in the first permutation of the milling element of the second milling element was transferred to another position. This ensures the possibility that the machine in the first position for the development of soil material is only one of the milling elements, while the other milling element is allocated in a secured second position.

Further, in accordance with the invention, the milling device in the preferred exemplary embodiment differs in that the actuating device has an actuator for shifting the milling elements. This drive can be performed, for example, in the form of a hydraulic drive, a drive with a toothed rack or a Cam drive. However, particularly preferably, the actuator was performed with actuator activated by a force generated when milling the development of soil. In particular, this force may be the force of friction created between the at least one milling element and entirely developed ground and/or between the execution unit and fully developed ground. This results in a particularly reliable perestanovki the milling elements depending on the direction of rotation.

In a particularly preferred exemplary embodiment of the milling device, the actuating device comprises at least one rocker performed at the district peripheral surface of the cutter. Rocker arm preferably has a rotation axis located parallel to the axis of rotation of the cutter. It is preferable that the rocker was made symmetrical with respect to the axis of rotation, in particular, was made mirror-symmetrical relative to the plane passing through the axis of rotation.

Preferably next to the first and second milling elements were located on the rocker pair. Preferably while milling elements can also be located symmetrically relative to the axis of rotation, in particular mirror-symmetrically relative to the plane passing through the axis of rotation. Due to this arrangement is achieved in a particularly reliable alternating permutation of the milling elements mounted on the yoke. Thus preferably the Cam is rotated depending on the direction of rotation under the action of the friction force generated between the cutter elements and the whole of the developed soil.

In accordance with the invention, the milling device in a particularly preferred exemplary embodiment differs in that the rocker contains at least about is in focus, which is in thrust contact with the circumferential peripheral surface of the cutter stops moving the rocker.

As the milling elements can be provided by scrapers or cutters. However, particularly preferably, at least one milling element was made in the form of a milling tooth or cutter with one cutting edge. Such milling element provides high cutting force and good cut transportation of soil material along the walls of the slit.

In a particularly preferred example of execution selectnode milling device provides several cutters with parallel axes of rotation, and the number of cutters can be anything. In a particularly preferred exemplary embodiment is provided with four cutters, arranged in pairs, with the cutters of each pair mounted for rotation on the same axis. Cross-section of the cut slit is preferably rectangular.

List of figures

Next, with reference to the accompanying drawings will be described in detail embodiments of the invention. In the drawings:

figure 1 depicts the milling device in front view with a partial cut

figure 2 depicts the front view of the milling cutter in accordance with the invention.

Information confirming the capacity is the invention, Figure 1 depicts the front view of the milling device in one of the examples of execution. On the frame 20, which is made in the form of a carrier plate by means of a support platform mounted for rotation two cutters 12, 12'. The cutters 12, 12' are located directly next to each other, with their axes of rotation are parallel. The frame 20 has an actuator 15, 15' for each of the cutters 12, 12', made in the form of the motor and kinematically associated with the corresponding cutter.

On the cutters 12, 12' are the first milling elements 16 and the second milling elements 18 made in the form of milling teeth one-sided cut. However, for clarity, shows the milling elements 16, 18 of the same type. An additional circumferential periphery of the blades 12, 12' are hinged to the sides of the teeth 14, intended for excavation under the reference area.

Figure 2 shows the cutter in accordance with the invention in one example implementation. On the yoke 5 are first and second milling elements 16, 18 with the rearrangement of their position. Shown in figure 2 the state of the second milling element 18 is in its first position cutting or development of soil material, and the first milling element 16 is in its allotted to the second position. In this mounted position of the second milling element 18 protrudes in the radial direction for the first milling element 16. This location provided the Reno for the development of soil material during the rotation of the cutter in a clockwise direction.

The first and second milling elements 16, 18 are made in the form of a milling teeth one-sided cut and have a cutting edge 19. Each milling element is connected with a yoke 5 in two points of attachment.

The rocker arm 5 pivotally mounted on the cutter 12 to rotate or swing around the axis 45 of rotation. The axis 45 of rotation runs parallel to the axis 42 of rotation of the cutter 12. On the reverse of the milling elements 16, 18 side of the rocker arm 5 has a stop 7, made in the form of hard surface. In the shown adjusted position clockwise rotation resistant surface to the left of the axis 45 of rotation depends on the surface 9 of a circumferential periphery of the cutter 12. The rocker 5 and the first and second milling elements 16, 18 are made and arranged mirror-symmetrically relative to the plane passing through the axis 45 of rotation. Resistant surface, forming a stop 7 has an arcuate cross-section.

On a circumferential periphery of the cutter 12, as shown in figure 2, with ten of the same rocker arm 5.

1. Milling device (10) for milling cracks in the ground, containing at least one cutter (12, 12'), driven in rotation, and at least one located on the cutter (12, 12') of the first milling element (16) for the development of soil material during the rotation of the cutter (12, 12') in the first direction of rotation, the ex is different, however, on the cutter (12, 12') is at least one of the second milling element (18) for the development of soil material during rotation in a second opposite direction of rotation, with at least one of milling elements (16, 18) is mounted for permutation between the first position for the development of soil material and the second designated position and provided by the Executive unit for shifting the milling element (16, 18) between the first and second position.

2. The device according to claim 1, characterized in that the first milling element (16) and the second milling element (18) is made with the possibility of rearrangement.

3. The device according to claim 2, characterized in that the first permutation of the milling element (16) with the assistance of the Executive device of the second milling element (18) is moved to another position.

4. Device according to any one of claims 1 to 3, characterized in that the actuating device has an actuator for shifting the milling elements (16, 18).

5. Device according to any one of claims 1 to 3, characterized in that the control device is configured to drive action through force generated during the milling of the soil.

6. Device according to any one of claims 1 to 3, characterized in that the actuating device comprises at least one rocker arm (5)is performed on the outer peripheral surface (9) of the cutter (12, 12').

7. The device according to claim 6, characterized in that the rocker (5) has an axis (45) of rotation that is located parallel to the axis (42) of rotation of cutter (12, 12').

8. The device according to claim 6, characterized in that the rocker (5) is made symmetrical with respect to an axis (45) of the rotation.

9. The device according to claim 7, characterized in that the rocker (5) is made symmetrical with respect to an axis (45) of the rotation.

10. Device according to any one of claims 7 to 9, characterized in that the first and second milling elements (16, 18) are a couple on the yoke (5).

11. Device according to any one of claims 7 to 9, characterized in that the rocker (5) contains at least one stop (7), which is in thrust contact with the circumferential peripheral surface (9) of the cutter (12, 12') for limiting the stroke of the movement of rocker arm (5).

12. Device according to any one of claims 1 to 3, characterized in that at least one of milling elements (16, 18) is made in the form of a milling cutter with one cutting edge (19).



 

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