CN212834938U - Combined asphalt digging device - Google Patents

Abstract

The utility model belongs to the technical field of the pitch is handled, a combination pitch turns over and digs device is disclosed, its adoption has the tool bit structure of blade as equipment for the cutting, and the lower crop of bottom is used for cutting into the structure that the tool bit of being convenient for got into on the pitch layer. Because the process of digging is including cutting into and violently drawing two steps of cutting, then need be through inciting somebody to action end at current engineering machine tool, earlier the slant cuts into again angle of adjustment and along the direction pulling that is on a parallel with the road surface behind the bituminous paving to carry out vertical cutting through inserting the intraformational tool bit of pitch. The utility model discloses a special design's tool bit structure can be directed against bituminous paving and stabilize the broken operation of turning of going into of efficient.

Description

Combined asphalt digging device

Technical Field

The utility model belongs to the technical field of, concretely relates to combination pitch digs device.

Background

The asphalt pavement recycling technology is a whole set of process that old asphalt pavement needing to be renovated or abandoned is re-mixed with a regenerant, new asphalt, new aggregate and the like according to a certain proportion into a mixture after being dug, recovered, heated, crushed and screened by special pavement regeneration equipment, so as to meet certain pavement performance and be re-paved on the pavement. The pavement regeneration can not only satisfy the pavement performance requirement again, save a large amount of material resources and funds, reduce the construction cost, but also avoid the pollution of waste materials to the environment, realize industrial recycling economy and promote the ecological environment protection, is a specific practice for implementing strategic measures of 'conservation-minded society' and has very remarkable social and economic benefits.

Asphalt is considered to be a colloid dispersion system by the theory of asphalt colloid structure, and the dispersed phase of the asphalt is a micelle formed by adsorbing part of colloid by taking asphaltene as a core and is dispersed in a dispersion medium consisting of aromatic hydrocarbon and saturated hydrocarbon. Studies have shown that bitumen has better properties only if the relative proportions of the components in the bitumen satisfy a certain relationship.

The essence of the deterioration of the quality of asphalt pavement is the aging of asphalt binder, i.e. the change of the components of asphalt cement, the reduction of aromatic components and the increase of colloid and asphaltene. The changes in the physical and mechanical properties of the asphalt caused by the "migration" of the chemical components of the asphalt can result in reduced penetration, reduced ductility, increased softening and brittle points, and increased hardening, embrittlement and reduced ductility of the asphalt. According to the theory of component regulation, the lost components are added into the aged asphalt, so that the proportion of the components is reconciled, and the performance of the asphalt can be recovered. Because the fresh soft asphalt contains more soft asphalt components, the performance of the old asphalt reaches a certain level through blending, thereby achieving the aim of asphalt regeneration.

However, since the aged asphalt is still adhered to the road surface, it is first dug or milled by using an engineering machine. The existing planning and milling equipment is large in size and low in efficiency, and has high limit on the road maintenance period of part of road construction with high traffic flow. The soil breaking equipment with a simple structure, stability and high efficiency is adopted for digging, and then the crusher is used for directly crushing, mixing and regenerating on site, so that the construction period is short, and the soil breaking equipment is suitable for various terrains. However, the existing ground breaking equipment is used in soil or hardened soil, and when the existing ground breaking equipment is used for operating a thin asphalt pavement with high viscosity, the resistance is large, and the foundation is easy to damage.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a combined asphalt digging device.

The utility model discloses the technical scheme who adopts does:

a combined asphalt digging device is provided with a smaller tip structure, which is cut into an asphalt layer to cut the asphalt layer, and comprises a connecting component for connecting an external power mechanism and a cutter set arranged at the end part of the connecting component, wherein the cutter set comprises a lower cutting head serving as a cutting tip, a cutter head for cutting and a guiding diffusion part arranged at one side of the cutter head far away from the advancing direction;

the cutter head is connected with the connecting component, and the lower cutting head is arranged at one end of the cutter head, which is far away from the connecting component;

the cross-sectional area of the cutter head decreases from the end in contact with the connecting component to the lower cutter head.

The utility model provides a high-efficient instrument of digging of bituminous paving is exclusively used in, its adoption has the tool bit structure of blade as equipment for the cutting, and the lower cutter head of bottom is used for cutting into the structure that the pitch layer is convenient for the tool bit to get into. Because the process of digging is including cutting into and violently drawing two steps of cutting, then need be through inciting somebody to action end at current engineering machine tool, earlier the slant cuts into again angle of adjustment and along the direction pulling that is on a parallel with the road surface behind the bituminous paving to carry out vertical cutting through inserting the intraformational tool bit of pitch.

Further, the upper part of the cutter head extends upwards to form an integrated fixing piece, and the fixing piece is connected with the connecting assembly.

Furthermore, the guiding diffusion part comprises a transition section in smooth transition connection with the cutter head, the transition section is far away from one end surface of the cutter head and extends outwards, and the cross sections of the transition section and the diffusion section are both triangular;

the cross-sectional area of the diffuser section from one end of the connecting transition section to the outer end is gradually increased, the width of the bottom of the diffuser section is unchanged, and the width of the upper portion of the diffuser section is increased.

Further, the end face of the guiding and diffusing part, which is far away from the tool bit, is provided with a cutting groove for reducing low quality.

Furthermore, a support body which extends outwards and bends downwards is arranged on the cutter head, and the cutter head has the maximum cutting depth;

and when the lower end surface of the support body is attached to the cut asphalt layer surface, the cutter head is at the maximum cut depth.

In the embodiment, a structure for increasing stability is added on the cutter head, and the cutter head is suitable for the cutting operation of a thicker asphalt layer, so that the problem of offset or over-deep cut can occur when the cutter head is designed to be wide at the upper part and narrow at the lower part. In order to increase its stability, a support limiting the depth of insertion of the cutting head is provided on the cutting head or on the connecting assembly.

The support body extends outwards from two layers of the cutter head and forms a support structure bent downwards, and a plate-shaped or rod-shaped structure is arranged at the bent end part of the support body, so that the support body can limit the cutter head to further extend by means of larger contact area when the support body is contacted with the ground.

In order to facilitate the cutting of the lower cutting head, the contact part of the support body and the ground can be set to be an arc-shaped structure, and the support body is in contact with the surface of the asphalt layer only when the cutter head is deepest to the design. At the moment, the cutter head is rotated, and due to the arc-shaped structural design, the support body can be adjusted in angle along with the cutter head without influencing the rotation of the support body.

Further, the connecting assembly comprises a connecting part and a supporting arm which are connected with each other;

the connecting part is used for connecting external engineering machinery;

one end of the supporting arm, which is far away from the connecting part, is connected with the fixing part.

Further, the connecting part is provided with a passive hinge point and an active hinge point;

the engineering machinery is an excavator, the passive hinge point is hinged with a mechanical arm at the tail end of the excavator, and the active hinge point is hinged with a hydraulic cylinder at the tail end of the excavator;

the connecting part is pushed to rotate around the passive hinge point through the hydraulic cylinder.

Furthermore, the supporting arm is of a structure with gradually reduced width, and a hollow groove is formed in the side face of the supporting arm.

Furthermore, the fixed part is provided with a U-shaped enclosure, and the inner bottom of the U-shaped enclosure is provided with a connecting groove;

the end part of the supporting arm is provided with a raised lug which is inserted into the connecting groove for limiting.

Further, the cutter head comprises a tangent plane forming a cutter point structure and a polished plane which is integrally connected with the tangent plane and gradually increases in width.

The utility model has the advantages that:

the utility model provides a high-efficient instrument of digging of bituminous paving is exclusively used in, its adoption has the tool bit structure of blade as equipment for the cutting, and the lower cutter head of bottom is used for cutting into the structure that the pitch layer is convenient for the tool bit to get into. Have better digging stability, and can be applicable to thicker pitch layer through narrow structural design under wide and dig, be equipped with the guide diffusion portion of certain length through the afterbody simultaneously and can turn the pitch plate after the cutting to both sides.

Drawings

FIG. 1 is a side schematic view of the present invention showing the entire excavation implement mounted on an excavator;

FIG. 2 is an isometric view of the present invention with the entire excavation implement mounted on an excavator;

fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to the present invention;

fig. 4 is a schematic axial view of the tool bit of the present invention disposed on the connecting assembly;

fig. 5 is a right-view schematic diagram of the tool bit of the present invention disposed on the connecting assembly;

fig. 6 is a schematic front view of the tool bit of the present invention disposed on the connecting assembly;

fig. 7 is a schematic side view of another angle of the tool bit of the present invention disposed on the connecting assembly;

FIG. 8 is a schematic side view of the single-bit of the present invention;

FIG. 9 is a schematic axial view of the bottom view of the single head of the present invention;

FIG. 10 is a right side schematic view of a single bit of the present invention;

fig. 11 is a plan view of the single blade head of the present invention.

In the figure: 1-mechanical arm, 2-hydraulic cylinder, 3-connecting part, 3.1-passive hinge point, 3.2-active hinge point, 4-supporting arm, 4.1-hollowed groove, 5-fixing part, 5.1-U-shaped surrounding, 5.2-connecting groove, 6-cutter head, 6.1-tangent plane, 6.2-polished plane, 7-lower tangent head, 8-guiding diffusion part, 8.1-cutting groove, 8.2-diffusion section and 8.3-transition section.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

for the excavation of the asphalt layer of an asphalt pavement, crushing devices, including roller type crushing devices and cutting bits 6, are often used. The two structures correspond to two different digging modes. The roller type crushing equipment is used for planing and milling the asphalt surface through a roller cutter rotating at a high speed, cutting off an originally bonded asphalt layer through a plurality of cutters and throwing out the asphalt layer to the outside, so that the asphalt pavement passing through can be completely crushed and directly obtained into asphalt particles, and the direct heating and mixing of the asphalt particles on site or returned to a factory are facilitated to carry out asphalt regeneration.

However, since the roller type equipment has a large volume and a complicated structure, the traveling efficiency is low, and the enclosing construction is required for the regeneration engineering of the asphalt pavement and the traffic control is performed on the corresponding road section. If the efficiency is low, the construction period is prolonged, and the local traffic is affected for a long time.

Then in order to raise the efficiency, and because the higher problem of roll-type equipment transportation cost to adopt a simple and easy broken structure, can directly insert below the pitch layer and the cutting of pulling fast, and turn up the pitch plate after will cutting to both sides, thereby obtain a plurality of pitch plates not of uniform size. The method is similar to ploughing, hardened soil blocks are turned over, and the obtained large-volume asphalt plate blocks can be quickly crushed by a double-roller crusher and then new materials can be added for hot mixing.

The existing soil breaking knife structure for turning over a soil layer is mostly a blunt knife, namely the end part of the soil breaking knife structure is a wedge-shaped metal block without a cutting edge, the viscosity between layers of the soil block structure is low due to the structure of the soil block, the hardness is low, and the soil layer is impacted by a metal body with high structural strength to achieve the effect of digging. However, due to the material characteristics of asphalt, the resistance is high when the blunt knife is used for impact, a good cutting effect cannot be achieved, and the foundation layer may be damaged when the existing engineering machinery is matched.

In order to improve the above situation, the present embodiment provides an efficient digging tool specifically for asphalt pavement.

The combined asphalt digging device comprises a connecting component and a cutter set, wherein the connecting component is used for connecting an external power mechanism, the cutter set is arranged at the end part of the connecting component, the cutter set comprises a lower cutter head 7 serving as a cutting tip, a cutter head 6 for cutting and a guide diffusion part 8, the cutter head 6 is arranged on one side, far away from the advancing direction, of the cutter head 6 and is connected with the connecting component, and the lower cutter head 7 is arranged at one end, far away from the connecting component, of the cutter head 6; the cross-sectional area of the cutting head 6 decreases from the end in contact with the connecting assembly to the connecting lower cutting head 7.

It uses the configuration of the cutting head 6 with cutting edges as the cutting device, while the lower cutting head 7 at the bottom is used to cut into the asphalt layer for the easy access of the cutting head 6. Because the digging process comprises two steps of cutting in and transversely pulling and cutting, the equipment of the embodiment is arranged at the action end of the existing engineering machinery, firstly, the equipment is obliquely cut into the asphalt pavement, then, the angle is adjusted, and the equipment is pulled along the direction parallel to the pavement, so that the equipment can be used for vertically cutting through the cutter head 6 inserted into the asphalt layer.

It should be noted that the cutter head 6 of the present embodiment is mainly used for digging an asphalt layer having a certain thickness. The thickness of the asphalt layer is 15-25cm, and the thinner asphalt layer can adopt a wider structural design, which brings less resistance, so that the length of the knife face is shorter, and the fast cutting can be realized. The structural strength of the connecting part 3 is tested if the equal width structure causes the lower resistance of the thick asphalt layer to be too large and the cutter head 6 always tends to twist up and down during cutting.

In the present embodiment, the cutter head 6 is designed to have a structural feature in which the cross-sectional area gradually decreases from top to bottom, so as to cope with the excavation of a thick asphalt layer. Specifically, the optimum thickness is in the range of 20-25cm, and a thinner pitch thickness will cause the entire lower cutting head 7 to cut into the substrate, not only affecting the cutting efficiency, but also damaging the lower cutting head 7.

As can be seen in the figure, the whole cutter head 6 is designed into an integral structure, and the lower cutter head 7 is in a triangular sheet structure, so that the lower cutter head 7 is kept horizontal with the road surface during transverse movement, and the generation of large resistance is avoided. The back of the cutter head 6 is provided with a guiding and diffusing part 8 which is smoothly and transitionally connected with the outer edge of the cutter head 6, has the characteristics of wide top and narrow bottom when viewed from the front, and is provided with a guiding structure which guides the asphalt blocks cut and separated by the cutter head 6 to turn over towards two sides at the tail part of the guiding structure. Because the setting is at the 6 backs of tool bit, has same structural feature with tool bit 6 simultaneously, then can strengthen the effect of stirring to both sides when cutting apart thicker pitch layer, the easy independent pitch plate of acquireing of user of being convenient for.

Example 2:

the embodiment also discloses a combined asphalt digging device, which comprises a connecting component for connecting an external power mechanism and a cutter set arranged at the end part of the connecting component, wherein the cutter set comprises a lower cutting head 7 serving as a cutting tip, a cutter head 6 for cutting and a guiding diffusion part 8, the cutter head 6 is arranged at one side of the cutter head 6 far away from the advancing direction, the cutter head 6 is connected with the connecting component, and the lower cutting head 7 is arranged at one end of the cutter head 6 far away from the connecting component; the cross-sectional area of the cutting head 6 decreases from the end in contact with the connecting assembly to the connecting lower cutting head 7.

The upper part of the cutter head 6 extends upwards and forms an integrated fixing piece 5, and the fixing piece 5 is connected with the connecting component.

The guiding diffusion part 8 comprises a transition section 8.3 in smooth transition connection with the tool bit 6, the transition section 8.3 is a diffusion section 8.2 extending outwards away from one end face of the tool bit 6, and the cross sections of the transition section 8.3 and the diffusion section 8.2 are both similar to a triangle; the diffuser section 8.2 has a cross-sectional area that increases from one end of the connecting transition section 8.3 to the outer end, with the width at the bottom increasing without changing the width at the top. The end surface of the guiding diffuser portion 8 on the side remote from the cutting head 6 is provided with a cut-out 8.1 for reducing the mass.

Wherein, a support body which is expected to extend outside and is bent downwards is arranged on the tool bit 6, and the tool bit 6 has the maximum cutting depth; the cutting head 6 is at the maximum depth of cut when the lower end face of the support body is fitted to the cut-in asphalt layer surface.

In the embodiment, a structure for increasing stability is added on the cutter head 6, and the cutter head 6 is suitable for the cutting operation of a thicker asphalt layer, so that the design of the structure with the wide upper part and the narrow lower part can cause the problems of deviation or over-deep cut in the cutting process. In order to improve its stability, a support limiting the depth of insertion of the cutting head 6 is provided on the cutting head 6 or on the connecting assembly.

The support body is a support structure extending outwards from two layers of the cutter head 6 and bent downwards, and is provided with a plate-shaped or rod-shaped structure at the bent end part, so that the support body can limit the cutter head 6 to further extend by means of larger contact area when the support body is contacted with the ground.

In order to facilitate the cutting of the lower cutting head 7, the contact part of the support body and the ground can be provided with an arc-shaped structure, and the support body is in contact with the surface of the asphalt layer only when the cutter head 6 is deepest to the design. At this time, the cutter head 6 is rotated, and due to the arc-shaped structural design, the support body can be adjusted in angle along with the cutter head 6 without influencing the rotation of the support body.

As shown in fig. 4-6, the connecting assembly is shown to include a connecting portion 3 and a support arm 4 connected to each other; the connecting part 3 is used for connecting external engineering machinery; one end of the supporting arm 4 far away from the connecting part 3 is connected with the fixing part 5.

The connecting part 3 is provided with a passive hinge point 3.1 and an active hinge point 3.2; the engineering machinery is an excavator, a passive hinge point 3.1 is hinged with a mechanical arm 1 at the tail end of the excavator, and an active hinge point 3.2 is hinged with a hydraulic cylinder 2 at the tail end of the excavator; the connecting part 3 is pushed to rotate around the passive hinge point 3.1 by the hydraulic cylinder 2.

The supporting arm 4 is a structure with gradually reduced width, and a hollow groove 4.1 is arranged on the side surface of the supporting arm. The fixed part 5 is provided with a U-shaped enclosure 5.1, and the inner bottom of the U-shaped enclosure 5.1 is provided with a connecting groove 5.2; the end of the supporting arm 4 is provided with a convex lug which is inserted into the connecting groove 5.2 for limiting.

The cutting head 6 comprises a cutting surface 6.1 forming a blade structure and a polished surface 6.2 which is integrally connected with the cutting surface 6.1 and gradually increases in width.

It should be noted that, as shown in the drawing, if the excavator is used for forward movement, the excavator is used for backward movement, and the concave design of the cutter head 6 can reduce cutting resistance compared with the propelling mode of the bulldozer from the force angle analysis, and is suitable for the propelling mode of the excavator for backward movement. If a bulldozer is used, a convex cut surface 6.1 design may be used.

It should be further noted that, because the existing earth-breaking cutter head 6 is a blunt cutter, the main action object is a soil layer, and the earth-breaking cutter head does not need a cutter point structure with a good cutting effect, but only needs to have a long end. And blunt sword structure can guarantee that it has higher structural strength when breaking ground, can break through the mode of striking when meetting the secret stereoplasm structure. The object of this embodiment effect is the asphalt material that has certain viscosity, then need have better cutting effect, and can follow the regular action of certain direction during the operation, and the broken soil cutter head 6 then can control the operation area and unordered action in this operation area, then can't be directly used in the digging of bituminous paving with broken soil cutter head 6.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims (10)

1. The utility model provides a combination pitch digs device, has most advanced structure and cuts the pitch layer in cutting into the pitch layer, its characterized in that: the cutting device comprises a connecting component used for connecting an external power mechanism and a cutter set arranged at the end part of the connecting component, wherein the cutter set comprises a lower cutting head (7) used as a cutting tip, a cutter head (6) used for cutting and a guiding diffusion part (8) arranged on one side of the cutter head (6) far away from the advancing direction;

the cutter head (6) is connected with the connecting component, and the lower cutting head (7) is arranged at one end, far away from the connecting component, of the cutter head (6);

the cross-sectional area of the cutter head (6) is reduced from the end which is in contact with the connecting component to the lower cutting head (7).

2. The combined asphalt digging device according to claim 1, characterized in that: the upper part of the cutter head (6) extends upwards to form an integrated fixing piece (5), and the fixing piece (5) is connected with the connecting component.

3. The combined asphalt digging device according to claim 2, wherein: the guiding and diffusing part (8) comprises a transition section (8.3) connected with the cutter head (6) in a smooth transition mode, one end face, far away from the cutter head (6), of the transition section (8.3) extends outwards to form a diffusing section (8.2), and the cross sections of the transition section (8.3) and the diffusing section (8.2) are both triangular;

the cross-sectional area of the diffuser section (8.2) from one end of the connecting transition section (8.3) to the outer end is gradually increased, the width of the bottom part is unchanged, and the width of the upper part is increased.

4. The combined asphalt digging device according to claim 3, wherein: the end surface of one side of the guide diffusion part (8) far away from the tool bit (6) is provided with a cutting groove (8.1) for reducing low quality.

5. The combined asphalt excavating device according to any one of claims 2 to 4, wherein: the cutter head (6) is provided with a support body which extends outwards and bends downwards, and the cutter head (6) has the maximum cutting depth;

the cutter head (6) is at the maximum cutting depth when the lower end surface of the support body is attached to the cut asphalt layer surface.

6. The combined asphalt digging device according to claim 5, wherein: the connecting assembly comprises a connecting part (3) and a supporting arm (4) which are connected with each other;

the connecting part (3) is used for connecting external engineering machinery;

one end of the supporting arm (4) far away from the connecting part (3) is connected with the fixing part (5).

7. The combined asphalt digging device according to claim 6, wherein: the connecting part (3) is provided with a passive hinge point (3.1) and an active hinge point (3.2);

the engineering machinery is an excavator, the passive hinge point (3.1) is hinged with a mechanical arm (1) at the tail end of the excavator, and the active hinge point (3.2) is hinged with a hydraulic cylinder (2) at the tail end of the excavator;

the connecting part (3) is pushed to rotate around the passive hinge point (3.1) through the hydraulic cylinder (2).

8. The combined asphalt digging device according to claim 6, wherein: the supporting arm (4) is of a structure with gradually reduced width, and a hollow groove (4.1) is formed in the side face of the supporting arm.

9. The combined asphalt digging device according to claim 6, wherein: the fixed part (5) is provided with a U-shaped surround (5.1), and the inner bottom of the U-shaped surround (5.1) is provided with a connecting groove (5.2);

the end part of the supporting arm (4) is provided with a convex lug which is inserted into the connecting groove (5.2) for limiting.

10. The combined asphalt digging device according to claim 6, wherein: the cutter head (6) comprises a tangent plane (6.1) forming a cutter point structure and a polished surface (6.2) which is integrally connected with the tangent plane (6.1) and gradually increases in width.

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