Construction auxiliary device for cement stabilized macadam joint of new and old pavements

Abstract

The utility model relates to the technical field of new and old pavement construction, especially a new and old pavement cement stabilized macadam joint construction auxiliary device, which can realize the cutting of the joint groove of the new and old pavement and the removal of the cement stabilized macadam waste in one time, is convenient to operate and can effectively improve the construction efficiency, comprises a cart, two cutting mechanisms and a removal mechanism installed on the cart, the cart is provided with a through mounting opening, the two cutting mechanisms are symmetrically arranged on the two sides of the through mounting opening, the cutting mechanism comprises a support frame, a telescopic arm installed on the support frame, a cutting assembly installed on the end of the telescopic arm and a telescopic driver installed on the telescopic arm and providing power for the telescopic movement of the telescopic arm, the cutting assembly comprises a driving motor and a cutting saw blade installed on the output shaft of the driving motor, the cutting saw blades on the two cutting mechanisms are arranged in a V shape, the angle of the two cutting mechanisms can be adjusted according to the construction requirement on site, and the removal mechanism is used for removing the cement stabilized macadam in the cut and formed groove.

Description

Technical Field

[0001] This utility model relates to the technical field of new and old road construction, and in particular to an auxiliary device for construction at the junction of cement-stabilized crushed stone and new road surfaces. Background Technology

[0002] Cement-stabilized crushed stone, as a semi-rigid base material, is widely used in infrastructure construction such as highways and urban roads. In road reconstruction, expansion, maintenance, and other projects, the construction quality at the junction of new and old pavements directly affects the overall performance and service life of the road. However, traditional construction methods have many problems at the junction of new and old pavements, necessitating specialized auxiliary devices to improve construction quality and efficiency.

[0003] For example, Chinese invention patent CN101591882B discloses a stress-absorbing strip and its construction method. A stress-absorbing strip is set at the joint between the new and old roads, that is, from the top surface of the roadbed to below the newly paved surface. The stress-absorbing strip is set as an inverted trapezoidal or inverted triangular groove, and the groove is filled with asphalt macadam or modified asphalt macadam. The stress-absorbing strip is set at the junction of the new and old roads, which can absorb and reduce stress and prevent pavement defects caused by stress at the junction of the new and old roads.

[0004] However, when the inventors implemented this device, they found the following defects: the inverted trapezoidal or inverted triangular trenches in the above-mentioned construction process often need to be cut twice at the new and old road surfaces using cutting equipment to form them. After the cutting, the width of the cut surface on the new and old road surfaces is inconsistent, and the dimensional accuracy of the inverted trapezoidal or inverted triangular trenches is difficult to guarantee. After the cutting operation, the cement-stabilized crushed stone waste in the trench also needs to be manually removed, which results in low construction efficiency and prolongs the construction period. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a construction auxiliary device for the junction of old and new road surfaces with cement-stabilized crushed stone, which can achieve trench cutting and removal of cement-stabilized crushed stone waste in a single operation, is easy to operate, and effectively improves construction efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a construction auxiliary device for the junction of cement-stabilized crushed stone and new road surfaces, comprising a trolley, two cutting mechanisms, and a chisel mechanism mounted on the trolley. The trolley has a through-hole, and the two cutting mechanisms are symmetrically arranged on both sides of the through-hole. Each cutting mechanism includes a support frame, a telescopic arm mounted on the support frame, a cutting assembly mounted on the end of the telescopic arm, and a telescopic actuator mounted on the telescopic arm to provide power for its extension and retraction. The cutting assembly includes a drive motor and a cutting mechanism mounted on the output shaft of the drive motor. The saw blades on the two cutting mechanisms are arranged in a V-shape. The chisel mechanism is used to remove cement-stabilized crushed stone within the shaped groove. It also includes an adjusting cylinder, with the fixed end of the telescopic arm rotatably mounted on a support frame. One end of the adjusting cylinder is hinged to a trolley, and the other end is hinged to the fixed end of the telescopic arm. Further, the telescopic actuator is preferably a drive cylinder, with one end hinged to the fixed end of the telescopic arm and the other end hinged to the movable end of the telescopic arm. The chisel mechanism can be a pneumatic pick, electric pick, or other equivalent component capable of removing cement-stabilized crushed stone. The adjusting cylinder can be an electric, pneumatic, or hydraulic telescopic cylinder, and the tilt angle of the cutting saw blade is adjusted by controlling the extension and retraction of the output end of the adjusting cylinder.

[0009] Preferably, the chiseling mechanism includes a mounting frame fixedly mounted on a trolley, a lifting frame slidably mounted on the mounting frame, a hammering power mechanism fixedly mounted at the bottom of the lifting frame, and a bucket mounted on the output end of the hammering power mechanism. The mounting frame is equipped with a lifting adjustment component that provides power for the vertical movement of the lifting frame. Further, the bucket has an inverted trapezoidal cross-section; the hammering power mechanism can be an electric hammer or a pneumatic hammer, or other equivalent components with a hammering feed effect; the lifting adjustment component is a threaded screw, rotatably mounted on the mounting frame, and the mounting frame is threadedly connected to the threaded screw; the lifting adjustment component can also be other equivalent components that drive the lifting frame to adjust vertically; the cutting saw blades on the two cutting mechanisms are coplanar with the two side walls of the bucket.

[0010] Preferably, the bucket is provided with a tongue-shaped shovel, which is used to extend into the bottom wall of the cutting groove.

[0011] Preferably, the bucket is provided with an inclined top ramp.

[0012] Preferably, the bucket is detachably installed on the output end of the hammer power mechanism; further, the bucket is threadedly connected to the output end of the hammer power mechanism, or the bucket is fixedly connected to the output end of the hammer power mechanism by bolts.

[0013] Preferably, the trolley is equipped with a counterweight assembly; furthermore, the counterweight assembly can be a single counterweight block or multiple stackable counterweight pieces; the counterweight assembly can also be a power supply device with a certain weight, such as a hydraulic pump station or a diesel generator.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a construction auxiliary device for the junction of new and old road surfaces with cement-stabilized crushed stone, which has the following beneficial effects: by starting the drive motors on the two cutting mechanisms, the drive motors drive the cutting saw blades to rotate, and at the same time, the telescopic driver drives the drive motors to feed towards the junction of the new and old road surfaces, pulling the trolley forward. After the two cutting saw blades feed synchronously, they cut the junction of the new and old road surfaces into inverted triangles, inverted trapezoids, rectangles, or stepped grooves. During the movement of the trolley, the chiseling mechanism gradually chiseles away the cement-stabilized crushed stone in the groove. The cutting of the groove at the junction of the new and old road surfaces and the chiseling away of cement-stabilized crushed stone waste can be achieved in one operation. The operation is convenient and effectively improves the construction efficiency. The groove size and width are consistent, which greatly improves the dimensional cutting accuracy of the groove. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a top view schematic diagram of the structure of this utility model;

[0018] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 4 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0020] The following are labels in the attached diagram: 1. Trolley; 2. Through-mount port; 3. Support frame; 4. Telescopic arm; 5. Telescopic drive; 6. Drive motor; 7. Cutting saw blade; 8. Mounting frame; 9. Lifting frame; 10. Hammering power mechanism; 11. Bucket; 12. Lifting adjustment component; 13. Tongue shovel; 14. Inclined top material ramp; 15. Adjusting cylinder; 16. Counterweight assembly. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figure 1-4 This utility model discloses an auxiliary construction device for the junction of old and new road surfaces with cement-stabilized crushed stone. It includes a trolley 1, two cutting mechanisms, and a chisel mechanism mounted on the trolley 1. The trolley 1 has a through-hole 2. The two cutting mechanisms are symmetrically arranged on both sides of the through-hole 2. Each cutting mechanism includes a support frame 3, a telescopic arm 4 mounted on the support frame 3, a cutting assembly mounted on the end of the telescopic arm 4, and a telescopic actuator 5 mounted on the telescopic arm 4 and providing power for its extension and retraction. The cutting assembly includes a drive motor 6 and a cutting saw blade 7 mounted on the output shaft of the drive motor 6. The cutting saw blades 7 on the two cutting mechanisms are arranged in a V-shape. The chisel mechanism is used to remove cement-stabilized crushed stone from the cut groove. Furthermore, the telescopic actuator 5 is preferably a drive cylinder, with one end hinged to the fixed end of the telescopic arm 4 and the other end hinged to the movable end of the telescopic arm 4. The chisel mechanism can be a pneumatic pick, an electric pick, or other equivalent components capable of removing cement-stabilized crushed stone.

[0024] For details, please refer to Figure 3 The chiseling mechanism includes a mounting frame 8 fixedly mounted on a trolley 1, a lifting frame 9 slidably mounted on the mounting frame 8, a hammering power mechanism 10 fixedly mounted on the bottom of the lifting frame 9, and a bucket 11 mounted on the output end of the hammering power mechanism 10. A lifting adjustment component 12 is mounted on the mounting frame 8 to provide power for the vertical movement of the lifting frame 9. Furthermore, the bucket 11 has an inverted trapezoidal cross-section; the hammering power mechanism 10 can be an electric hammer or a pneumatic hammer, or other equivalent components with a hammering feed effect; the lifting adjustment component 12 uses a threaded screw, which is rotatably mounted on the mounting frame 8, and the mounting frame 8 is threadedly connected to the threaded screw. The lifting adjustment component 12 can also be other equivalent components that drive the lifting frame 9 to adjust vertically; the cutting saw blades 7 on the two cutting mechanisms are coplanar with the two side walls of the bucket 11, and the hammering power mechanism 10 can be set horizontally or at an angle.

[0025] For details, please refer to Figure 1 The trolley 1 is equipped with a counterweight assembly 16. Furthermore, the counterweight assembly 16 can be a single counterweight block or multiple stackable counterweight pieces. The counterweight assembly 16 can also be a power supply device with a certain weight, such as a hydraulic pump station or a diesel generator.

[0026] For details, please refer to Figure 2 The bucket 11 is provided with a tongue shovel 13, which is used to extend into the bottom wall of the cutting groove.

[0027] For details, please refer to Figure 2 and Figure 3 The bucket 11 is equipped with an inclined top ramp 14.

[0028] The auxiliary device for construction at the junction of old and new road cement-stabilized crushed stone provided in this embodiment, when performing joint cutting construction at the junction of old and new road surfaces, under the hammering action of the hammering power mechanism 10, the tongue 13 of the bucket 11 extends horizontally into the junction of the cement-stabilized crushed stone layer and the soil layer, so that the entire device is in a stable connection with the road surface, to ensure the smooth cutting of the road surface by the subsequent cutting mechanism and the smooth removal of the road surface by the chiseling mechanism; the hammering power mechanism 10 drives the bucket 11 to gradually remove the inverted triangle, inverted trapezoid, rectangular or stepped cement-stabilized crushed stone cut by the cutting saw blade 7, while the inclined top ramp 14 can gradually lift the cement-stabilized crushed stone in the trench, improve the feeding efficiency of the bucket 11, so as to improve the removal efficiency of cement-stabilized crushed stone, and the counterweight can increase the weight of the cart 1, improve the overall stability of the device, prevent the cart 1 from moving synchronously with the hammering power mechanism 10, and make the bucket 11 feed smoothly in the direction of the cart 1's movement.

[0029] Example 2

[0030] The construction auxiliary device for the interface between new and old road cement-stabilized crushed stone provided in Example 1 has been further optimized. For details, please refer to [link / reference needed]. Figure 1 and Figure 4 It also includes an adjusting cylinder 15. The fixed end of the telescopic arm 4 is rotatably mounted on the support frame 3. One end of the adjusting cylinder 15 is hinged to the trolley 1, and the other end of the adjusting cylinder 15 is hinged to the fixed end of the telescopic arm 4. Furthermore, the adjusting cylinder 15 can be an electric telescopic cylinder, a pneumatic telescopic cylinder, or a hydraulic telescopic cylinder. The cutting angle of the cutting saw blade 7 can be adjusted by adjusting the extension of the output end of the adjusting cylinder 15.

[0031] For details, please refer to Figure 3 The bucket 11 is detachably installed at the output end of the hammer power mechanism 10; furthermore, the bucket 11 is threadedly connected to the output end of the hammer power mechanism 10, or the bucket 11 is fixedly connected to the output end of the hammer power mechanism 10 by bolts.

[0032] The construction auxiliary device for the junction of old and new road cement-stabilized crushed stone provided in this embodiment can adjust the tilt angle of the telescopic arm 4 by adjusting the cylinder 15, thereby adapting the width of the cut trench and the tilt angle of the trench side arm to meet the cutting needs of trenches of various sizes. When removing cement-stabilized crushed stone in trenches of different sizes, the corresponding shaped bucket 11 is replaced, and the size of the bucket 11 matches the size of the trench. In another embodiment, during the trench excavation process, the trench can be cut layer by layer from top to bottom by the cutting saw blade 7. After each layer is cut, the bucket 11 of different sizes is replaced. By controlling the extension of the adjusting cylinder 15 and the telescopic arm 4, the tilt angle of the two saw blades 7 and the width between the two cutting saw blades 7 are adjusted. The replaced bucket 11 matches the cutting size of the two cutting saw blades 7, so that the cutting saw blades 7 cut the two side walls of the trench into a stepped working surface from top to bottom.

[0033] During use, under the hammering action of the hammering power mechanism 10, the tongue 13 of the bucket 11 extends horizontally or at an angle to the junction of the cement-stabilized crushed stone layer and the soil layer. By starting the drive motors 6 on the two cutting mechanisms, the drive motors 6 drive the cutting saw blades 7 to rotate. At the same time, the telescopic driver 5 drives the drive motors 6 to feed towards the junction of the new and old road surfaces, pulling the trolley 1 forward. After the two cutting saw blades 7 feed synchronously, they cut the junction of the new and old road surfaces into inverted triangles, inverted trapezoids, rectangles, or stepped trenches. During the movement of the trolley 1, the hammering power mechanism 10 drives the bucket 11 to move back and forth. During the reciprocating movement, the bucket 11 gradually removes the cement-stabilized crushed stone in the trench, so as to quickly excavate the inverted triangle, inverted trapezoid, rectangular, or stepped trenches at the junction of the cement-stabilized crushed stone and the new and old road surfaces.

[0034] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A new and old pavement cement stabilized macadam joint construction auxiliary device, characterized in that, The utility model provides a kind of cutting and chiseling mechanism, including trolley (1), two cutting mechanisms and chiseling mechanism installed on trolley (1), the through installation port (2) is equipped on trolley (1), two cutting mechanisms are symmetrically arranged in the through installation port (2) two sides, the cutting mechanism includes support frame (3), telescopic arm (4) installed on support frame (3), cutting assembly installed on the end of telescopic arm (4) and telescopic drive (5) installed on telescopic arm (4) and provide telescopic power for telescopic arm (4), the cutting assembly includes driving motor (6) and cutting saw blade (7) installed on the output shaft of driving motor (6), cutting saw blade (7) on two cutting mechanisms is arranged in V type, the chiseling mechanism is used for cutting cement stabilized macadam in cutting and forming groove; Further comprising adjusting cylinder (15), the fixed end of telescopic arm (4) is rotatably installed on support frame (3), one end of adjusting cylinder (15) is hinged with trolley (1), the other end of adjusting cylinder (15) is hinged with the fixed end of telescopic arm (4), can adjust the angle of two cutting mechanisms with the demand of on-site construction.

2. The construction auxiliary device for new and old pavement cement stabilized macadam joint according to claim 1, characterized in that, The chiseling mechanism includes mounting bracket (8) fixedly installed on trolley (1), lifting frame (9) slidingly installed on mounting bracket (8), hammering power mechanism (10) fixedly installed on the bottom of lifting frame (9) and shovel (11) installed on the output end of hammering power mechanism (10), lifting adjusting part (12) for providing power for the up-down movement of lifting frame (9) is installed on mounting bracket (8).

3. The construction auxiliary device for new and old pavement cement stabilized macadam joint according to claim 2, characterized in that, The shovel (11) is provided with tongue shovel part (13), and the tongue shovel part (13) is used for extending into the bottom wall of cutting and forming groove.

4. The construction auxiliary device for new and old pavement cement stabilized macadam joint according to claim 3, characterized in that, The shovel (11) is provided with inclined material top slope (14).

5. The construction auxiliary device for new and old pavement cement stabilized macadam joint according to claim 4, characterized in that, The shovel (11) can be detachably installed on the output end of hammering power mechanism (10).

6. The construction auxiliary device for new and old pavement cement stabilized macadam joint according to claim 1, characterized in that, The trolley (1) is provided with counterweight assembly (16).

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