Two-stage regenerant permeation enhanced raking device

Abstract

The utility model discloses a two-stage regenerant permeation enhancement type raking device which comprises a rake tooth frame. The rake teeth are assembled and fixed on the rake tooth frame and are arranged at intervals; each rake tooth is provided with a rake tooth main body part serving as a main body and rake tooth wing parts arranged on the two sides of the rake tooth main body part; a step surface is formed between the rake tooth wing part and the rake tooth main body part, the raking device forms an old mixture step surface when the old mixture is raked through the step surface of the rake tooth, and a regenerant is scattered on the surface of the old mixture step surface. According to the harrowing device, the harrowing tooth wing part and the harrowing tooth main body part form the step surface, the step surface can be formed on an old mixture in the harrowing process through the harrowing device with the step surface, and compared with a strip-shaped harrowing tooth structure, the surface area of the step surface can be increased, so that the contact area of a regenerant sprayed by a spraying device is increased, and the harrowing effect is improved. Spraying is performed twice, so that the mixing effect is effectively improved, and the mixing uniformity of the regenerant in the regenerant is greatly enhanced.

Description

Technical Field

[0001] This utility model relates to the field of on-site thermal recycling construction technology for asphalt roads, and in particular to a two-stage recycling agent penetration-enhanced loosening device. Background Technology

[0002] In-situ thermal recycling technology, as a green and environmentally friendly road maintenance technology, has been widely used in recent years. This technology involves heating and loosening old road surface materials, adding recycling agents and new materials, and then repaving and compacting them to achieve the recycling of old road surface materials. It has advantages such as saving resources, protecting the environment, quick construction, and minimal traffic disruption.

[0003] However, traditional in-situ thermal recycling technology also has some limitations in practical applications. For example, the old mixture is not well mixed, and the recycling agent is only sprayed on the surface and cannot be mixed into the recycled material.

[0004] The main reason for the above-mentioned defects and problems is that traditional in-situ thermal recycling technology only spreads the regenerant before loosening the material. Therefore, the regenerant only stays on the surface and fails to mix into the lower layers, resulting in poor uniformity of the old mixture. At the same time, the traditional loosening device uses strip-shaped rake teeth, which results in a small contact area between the regenerant and the old mixture, leading to poor mixing effect.

[0005] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a two-stage regenerant-infused rake loosening device. Utility Model Content

[0006] The purpose of this invention is to provide a two-stage regenerator penetration-enhanced rake loosening device. This rake loosening device adopts a novel rake tooth structure. The stepped surface of the novel rake tooth structure forms a stepped surface at the old mixture during rake loosening, thereby increasing the contact area with the regenerator and improving the mixing effect.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model discloses a two-stage regenerant penetration-enhanced rake loosening device, which includes:

[0009] rake frame; and

[0010] Multiple rake teeth are assembled and fixed on the rake tooth frame and spaced apart.

[0011] The rake tooth has a main body portion as the main body and rake tooth wings portion disposed on both sides of the main body portion.

[0012] A stepped surface is formed between the rake tooth wings and the rake tooth body, and the rake loosening device forms a stepped surface of the old mixture when the old mixture is loosened by the stepped surface of the rake tooth, and the regenerating agent is spread on the surface of the stepped surface of the old mixture.

[0013] Furthermore, the rake tooth frame is configured as a mounting rod structure;

[0014] The lower part of the rake tooth body is provided with the rake tooth wing, and the upper end of the rake tooth body is provided with a connecting structure. The rake tooth is assembled and fixed to the rake tooth frame through the connecting structure.

[0015] Furthermore, the main body of the rake teeth is configured as a straight rod with a square cross-sectional shape;

[0016] The height of the rake tooth wing is one-third of the height of the rake tooth body;

[0017] One side of the rake tooth wing in the thickness direction is flush with the surface of the rake tooth body, and the other side of the rake tooth wing in the thickness direction forms a stepped surface between it and the surface of the rake tooth body.

[0018] Furthermore, the rake tooth wings are configured with a structure in which the thickness gradually changes in the height direction, and the rake tooth wings are also configured with a structure in which the width gradually changes in the width direction.

[0019] Furthermore, the rake tooth wing portion is generally wedge-shaped;

[0020] The front of the lower end of the rake tooth wing is flush with the front of the lower end of the rake tooth body, and the back of the lower end of the rake tooth wing is flush with the back of the lower end of the rake tooth body.

[0021] The back side of the upper end of the rake tooth wing is flush with the back side of the rake tooth body, and the front side of the upper end of the rake tooth wing is close to the back side of the rake tooth body.

[0022] The thickness of the rake tooth wing gradually decreases from bottom to top in the height direction, and the front of the rake tooth wing is formed as a slope through the positions of its upper and lower ends.

[0023] The rake tooth wing portion forms the stepped surface between the inclined surface and the rake tooth body portion.

[0024] Furthermore, the width of the rake tooth wing is configured such that its width gradually increases from bottom to top.

[0025] Furthermore, the connection structure includes:

[0026] The smooth rod portion connected to the upper end of the rake tooth body portion; and

[0027] A screw portion formed at the upper end of the optical rod portion;

[0028] A through hole is provided at the position where the rake tooth frame mates with the rake tooth, and the connecting structure can pass through the through hole and extend partially to the top of the rake tooth frame;

[0029] The connection structure is assembled and fixed to the rake tooth frame by fastening nuts.

[0030] Furthermore, the thickness of the rake tooth frame is not greater than the length of the smooth rod portion, and the screw portion extends above the rake tooth frame and is assembled and fixed to the rake tooth frame by the fastening nut.

[0031] Furthermore, the length of the connecting structure is no greater than one-half the length of the main body of the rake teeth.

[0032] Furthermore, the distance between adjacent rake teeth on the rake tooth frame is not greater than the thickness of the rake tooth body.

[0033] In the above technical solution, the two-stage regenerant penetration-enhanced rake loosening device provided by this utility model has the following beneficial effects:

[0034] The rake loosening device of this utility model forms a stepped surface through the rake tooth wings and the rake tooth body. This rake loosening device with a stepped surface can form a stepped surface on the old mixture during the rake loosening process. Compared with the strip rake tooth structure, the stepped surface can increase the surface area, thereby increasing the contact area of ​​the regenerator sprayed by the spraying device. After two sprays, the mixing effect is effectively improved, and the uniformity of the regenerator in the recycled material is greatly enhanced. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0036] Figure 1 This is a schematic diagram of the rake teeth of the two-stage regenerant penetration-enhanced rake loosening device disclosed in the embodiments of this application;

[0037] Figure 2 This is a schematic diagram of the connection structure between the rake teeth and the rake tooth frame of the two-stage regenerant penetration enhanced rake loosening device disclosed in the embodiments of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10. Rake teeth; 20. Rake tooth frame; 21. Through hole;

[0040] 1. Main body of the rake teeth; 2. Wings of the rake teeth; 3. Connecting structure;

[0041] 201. Stepped surface;

[0042] 301. Polished rod section; 302. Screw section. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0044] See Figures 1 to 2 As shown;

[0045] This embodiment discloses a two-stage regenerant penetration-enhanced rake loosening device, which includes:

[0046] Rake tooth frame 20; and

[0047] Multiple rake teeth 10 are assembled and fixed on the rake tooth frame 20 and spaced apart;

[0048] The rake tooth 10 has a rake tooth body part 1 as the main body and rake tooth wings 2 provided on both sides of the rake tooth body part 1;

[0049] A stepped surface 201 is formed between the rake tooth wing 2 and the rake tooth body 1, and the rake loosening device forms a stepped surface of the old mixture when the old mixture is loosened by the stepped surface 201 of the rake tooth 10, and the regenerating agent is spread on the surface of the stepped surface of the old mixture.

[0050] Specifically, this embodiment discloses a rake loosening device with a novel rake tooth structure. Specifically, the rake teeth 10 of this embodiment are installed on the rake tooth frame 20. The rake teeth 10 of this embodiment are divided into a main body 1 and two wings 2, symmetrically arranged on both sides of the main body 1. The novel rake teeth 10 of this embodiment have a stepped surface 201 formed on one side of the working surface between the wings 2 and the main body 1. During the rake loosening operation, the stepped surface 201 can form a stepped surface on the surface of the old mixture. Compared with the traditional strip-shaped rake tooth structure, the stepped surface can increase the contact area with the regenerating agent. Simultaneously, the stepped spreading surface can spread the regenerating agent to different locations in the old mixture. Combined with two spraying operations—one before rake loosening and one after rake loosening—the regenerating agent can be fully mixed, effectively improving the regenerating agent penetration by approximately 50%.

[0051] Preferably, in this embodiment, the rake tooth frame 20 is configured as a mounting rod structure;

[0052] The lower part of the rake tooth body 1 is provided with rake tooth wings 2, and the upper end of the rake tooth body 1 is provided with a connecting structure 3. The rake tooth 10 is assembled and fixed with the rake tooth frame 20 through the connecting structure 3.

[0053] In this embodiment, the rake teeth 10 are assembled and fixed to the rake tooth frame 20 through the connecting structure 3 on them. The number and spacing of the rake teeth 10 can be adjusted according to the actual operation and construction conditions. At the same time, it is also convenient to maintain the rake teeth 10. If a single tooth is damaged, it can be directly replaced without causing the entire rake loosening device to become unusable.

[0054] Preferably, in this embodiment, the rake tooth body 1 is configured as a straight rod with a square cross-sectional shape;

[0055] The height of the rake tooth wing 2 is one-third of the height of the rake tooth body 1. The height design of the rake tooth wing 2 is mainly to avoid affecting the normal operation of the rake tooth 10, and to allow material to pass through the space between the upper end of the rake tooth wing 2 and the rake tooth body 1 without causing excessive resistance, making the operation more time-saving and labor-saving. Secondly, in this embodiment, one side of the rake tooth wing 2 in the thickness direction is flush with the surface of the rake tooth body 1, and a stepped surface 201 is formed between the other side of the rake tooth wing 2 in the thickness direction and the surface of the rake tooth body 1.

[0056] The following embodiments further define the structure of the rake tooth wing 2 and the structural principle of the stepped surface 201 formed between the rake tooth wing 2 and the rake tooth body 1. Specifically, the rake tooth wing 2 in this embodiment is configured to have a structure in which the thickness gradually changes in the height direction, and the rake tooth wing 2 is also configured to have a structure in which the width gradually changes in the width direction.

[0057] More specifically, in this embodiment, the rake tooth wing 2 is generally a wedge-shaped structure;

[0058] Among them, the front of the lower end of the rake tooth wing 2 is flush with the front of the lower end of the rake tooth body 1, and the back of the lower end of the rake tooth wing 2 is flush with the back of the lower end of the rake tooth body 1; at the same time, the back of the upper end of the rake tooth wing 2 is flush with the back of the rake tooth body 1, and the front of the upper end of the rake tooth wing 2 is close to the back of the rake tooth body 1.

[0059] The thickness of the rake tooth wing 2 gradually decreases from bottom to top in the height direction, and the front of the rake tooth wing 2 is formed as a slope through the positions of its upper and lower ends.

[0060] The rake tooth wing 2 forms a stepped surface 201 between the inclined surface and the rake tooth body 1.

[0061] Secondly, in this embodiment, the width of the rake tooth wing 2 is configured such that the width gradually increases from bottom to top.

[0062] In summary, the rake tooth wing 2 of this embodiment has a wedge-shaped structure that is thicker at the bottom and thinner at the top, and narrower at the bottom and wider at the top. The rear side of the rake tooth wing 2 is flush with the rake tooth body 1, while the front side of the rake tooth wing 2, i.e., the working surface, forms a stepped surface 201 between the working surface and the rake tooth body 1 through the inclined surface of the wedge-shaped structure. During operation, when the working surface passes over the surface of the old mixture, the stepped surface 201 forms a stepped surface on the surface of the old mixture, thereby increasing the contact area with the regenerating agent and improving the mixing effect.

[0063] Preferably, this embodiment further defines the assembly structure of the rake teeth 10 and the rake tooth frame 20. The connection structure 3 of this embodiment includes a smooth rod portion 301 connected to the upper end of the rake tooth body portion 1; and a screw portion 302 formed on the upper end of the smooth rod portion 301.

[0064] A through hole 21 is provided at the position where the rake tooth frame 20 mates with the rake tooth 10. The connecting structure 3 can pass through the through hole 21 and extend partially to the top of the rake tooth frame 20. The connecting structure 3 is assembled and fixed to the rake tooth frame 3 by fastening nuts.

[0065] In this embodiment, the thickness of the rake tooth frame 3 is no greater than the length of the smooth rod portion 301, and the screw portion 302 extends above the rake tooth frame 20 and is assembled and fixed to the rake tooth frame 20 by a fastening nut. The length of the connecting structure 3 is no greater than half the length of the rake tooth body portion 1. The distance between adjacent rake teeth 10 on the rake tooth frame 20 is no greater than the thickness of the rake tooth body portion 1.

[0066] The connection between the rake teeth 10 and the rake tooth frame 20 is as described above. The rake teeth 10 are used as independent units and are assembled and fixed with fastening nuts, which facilitates later maintenance and easy replacement.

[0067] In the above technical solution, the two-stage regenerant penetration-enhanced rake loosening device provided by this utility model has the following beneficial effects:

[0068] The rake loosening device of this utility model forms a stepped surface 201 by means of the rake tooth wing 2 and the rake tooth body 1. The rake loosening device with the stepped surface 201 can form a stepped surface on the old mixture during the rake loosening process. Compared with the strip rake tooth structure, the stepped surface can increase the surface area, thereby increasing the contact area of ​​the regenerator sprayed by the spraying device. After two sprays, the mixing effect is effectively improved, and the uniformity of the regenerator in the recycled material is greatly enhanced.

[0069] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A two-stage rejuvenator penetration-enhanced harrow apparatus, characterized by, The loosening device includes: Rake tooth frame (20); and Multiple rake teeth (10) are assembled and fixed on the rake tooth frame (20) and spaced apart; The rake tooth (10) has a rake tooth main body (1) as the main body and rake tooth wings (2) disposed on both sides of the rake tooth main body (1); A stepped surface (201) is formed between the rake tooth wing (2) and the rake tooth body (1), and the rake loosening device forms an old mixture stepped surface when the old mixture is loosened by the stepped surface (201) of the rake tooth (10), and the regenerating agent is spread on the surface of the old mixture stepped surface.

2. The two-stage regenerant penetration-enhanced rake loosening device according to claim 1, characterized in that, The rake tooth frame (20) is configured as a mounting rod structure; The rake tooth wing (2) is provided at the lower part of the main body (1) of the rake tooth, and a connecting structure (3) is provided at the upper end of the main body (1). The rake tooth (10) is assembled and fixed to the rake tooth frame (20) through the connecting structure (3).

3. The two-stage regenerant penetration-enhanced rake loosening device according to claim 2, characterized in that, The main body (1) of the rake teeth is configured as a straight rod with a square cross-sectional shape; The height of the rake tooth wing (2) is one-third of the height of the rake tooth body (1); The thickness direction of the rake tooth wing (2) is flush with the surface of the rake tooth body (1), and the other side of the thickness direction of the rake tooth wing (2) is formed between the rake tooth body (1) and the surface of the rake tooth body (1).

4. The two-stage regenerant penetration-enhanced loosening device according to claim 3, characterized in that, The rake tooth wing (2) is configured with a structure in which the thickness gradually changes in the height direction, and the rake tooth wing (2) is also configured with a structure in which the width gradually changes in the width direction.

5. The two-stage regenerant penetration-enhanced loosening device according to claim 4, characterized in that, The rake tooth wing (2) is a wedge-shaped structure as a whole; The front of the lower end of the rake tooth wing (2) is flush with the front of the lower end of the rake tooth body (1), and the back of the lower end of the rake tooth wing (2) is flush with the back of the lower end of the rake tooth body (1). The back side of the upper end of the rake tooth wing (2) is flush with the back side of the rake tooth body (1), and the front side of the upper end of the rake tooth wing (2) is close to the back side of the rake tooth body (1). The thickness of the rake tooth wing (2) gradually decreases from bottom to top in the height direction, and the front of the rake tooth wing (2) is formed as an inclined surface through the positions of its upper and lower ends; The rake tooth wing (2) forms the stepped surface (201) between the inclined surface and the rake tooth body (1).

6. The two-stage regenerant penetration-enhanced loosening device according to claim 5, characterized in that, The width of the rake tooth wing (2) is configured such that its width gradually increases from bottom to top.

7. The two-stage regenerant penetration-enhanced loosening device according to claim 2, characterized in that, The connection structure (3) includes: The smooth rod portion (301) connected to the upper end of the rake tooth body portion (1); and A screw portion (302) is formed at the upper end of the smooth rod portion (301); The rake tooth frame (20) has a through hole (21) at the position where it mates with the rake tooth (10), and the connecting structure (3) can pass through the through hole (21) and extend partially to the top of the rake tooth frame (20); The connecting structure (3) is assembled and fixed to the rake tooth frame (20) by fastening nuts.

8. The two-stage regenerant penetration-enhanced loosening device according to claim 7, characterized in that, The thickness of the rake tooth frame (20) is not greater than the length of the smooth rod portion (301), and the screw portion (302) extends above the rake tooth frame (20) and is assembled and fixed to the rake tooth frame (20) by the fastening nut.

9. The two-stage regenerant penetration-enhanced rake loosening device according to claim 7 or 8, characterized in that, The length of the connecting structure (3) is no more than half the length of the rake tooth body (1).

10. The two-stage regenerant penetration-enhanced rake loosening device according to claim 7 or 8, characterized in that, The distance between adjacent rake teeth (10) on the rake tooth frame (20) is not greater than the thickness of the rake tooth body (1).

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