Width adjusting device for asphalt pavement compaction

Abstract

The utility model discloses a width adjusting device for asphalt pavement compaction, and relates to the technical field of asphalt compaction. The width adjusting device comprises an asphalt compactor and fixing frames symmetrically installed on the asphalt compactor, a main guide roller is connected between the two fixing frames, an adjusting mechanism is arranged on the fixing frames, connecting arms are fixedly connected to the fixing frames, the main guide roller is rotationally connected between the two connecting arms, and the adjusting mechanism is arranged on the main guide roller. The adjusting mechanism comprises an adjusting rail plate connected with the fixing frame, a movable groove is formed in the adjusting rail plate, two auxiliary guide rollers are oppositely arranged at the lower end of the adjusting rail plate, connecting bases slidably connected with the movable groove are arranged at the two ends of each auxiliary guide roller, and a two-way lead screw penetrating through the connecting bases in a threaded mode is rotationally connected into the adjusting rail plate. And the secondary guide roller is driven to move through the two-way screw rod. Adjustability of the compaction width is achieved, the device adapts to different road surface widths, particularly compaction of edge areas is achieved, and the universality of the device is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of asphalt compactors, specifically to an asphalt pavement compaction width adjustment device. Background Technology

[0002] With the rapid development of urban infrastructure construction, asphalt pavement is increasingly widely used in large transportation facilities such as urban roads, airports, and bridges. Small asphalt compactors, as one of the commonly used pieces of equipment in road construction, are widely used in various small and medium-sized asphalt pavement compaction projects due to their high mobility and ease of operation. In asphalt pavement construction, the compaction process is a crucial step in ensuring the pavement's load-bearing capacity and durability.

[0003] In traditional small asphalt compactors, guide rollers are usually installed at the front end to share some of the weight during the compactor's operation. These guide rollers can both share some of the weight and play a role in pre-compaction. However, the structure of the guide rollers is generally fixed, and their size is usually not adjustable. This single size limits their application in compacting asphalt pavements of different widths. Especially when dealing with pavements of different widths, the fixed guide roller design often leads to poor equipment adaptability and difficulty in meeting different construction needs. Because the width of the guide rollers cannot be adjusted, it is difficult to accurately fit the curb or complex boundaries, resulting in insufficient compaction of the edge areas and affecting the smoothness of the road surface.

[0004] Therefore, based on its many years of experience in design, development and actual production in the relevant industry, the applicant has studied and improved the existing structure and its shortcomings, and provided a width adjustment device for asphalt pavement compaction, in order to achieve a more practical purpose. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an asphalt pavement compaction width adjustment device, which solves the problem that the structure of the guide rollers in the background technology is generally fixed and their size is usually not adjustable. This single size limits its application in asphalt pavement compaction operations of different widths.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: an asphalt pavement compaction width adjustment device, comprising an asphalt compactor and fixed frames symmetrically installed on the asphalt compactor, wherein a main guide roller is connected between the two fixed frames;

[0009] An adjustment mechanism is provided on the fixed frame, and a connecting arm is fixedly connected to the fixed frame. The main guide roller is rotatably connected between the two connecting arms.

[0010] The adjustment mechanism includes an adjustment rail plate connected to the fixed frame. The adjustment rail plate has a movable groove. Two auxiliary guide rollers are arranged opposite each other at the lower end of the adjustment rail plate. Both ends of the auxiliary guide rollers are provided with connecting seats that are slidably connected to the movable groove. The adjustment rail plate is rotatably connected to a bidirectional screw threaded into the connecting seat, which forms the basic structure of the device. The bidirectional screw drives the auxiliary guide rollers to move, realizing the adjustability of the compaction width to adapt to different road widths, especially for compaction of edge areas.

[0011] Preferably, one end of the adjusting rail plate is provided with a worm gear assembly connected to the bidirectional lead screw.

[0012] Preferably, the housing of the worm gear assembly is fixedly connected to the side of the adjusting rail plate by bolts.

[0013] Preferably, the worm gear assembly includes a housing and a worm gear rotatably connected inside the housing. A worm gear meshing with the worm gear is disposed inside the housing. The worm gear is sleeved with the bidirectional lead screw. A wheel is fixedly installed at one end of the worm gear. The wheel serves as an operating interface, facilitating manual adjustment. At the same time, the high transmission ratio of the worm gear allows for precise fine-tuning.

[0014] Preferably, a limiting block is installed on the inner side of the adjusting rail plate, and a limiting groove is provided on the connecting seat to slide with the bidirectional lead screw. The secondary guide roller is rotatably connected to the connecting seat. The limiting structure ensures that the connecting seat only makes linear motion when the lead screw rotates, avoiding rotational offset caused by threaded transmission, and ensuring the stability and adjustment accuracy of the secondary guide roller movement.

[0015] Preferably, the upper end of the adjusting rail plate is detachably connected to a cover, and a reinforcing plate connected to the fixing frame is fixedly installed on the outside of the adjusting rail plate. The cover facilitates maintenance and repair of internal components and prevents debris from entering the movable groove.

[0016] (III) Beneficial Effects

[0017] This utility model provides a practical width adjustment device for asphalt pavement compaction, which has the following advantages compared with the prior art:

[0018] 1. This width adjustment device drives the secondary guide roller to move via a bidirectional screw, thereby achieving adjustable compaction width to adapt to different road widths, especially for compaction of edge areas, significantly improving the versatility of the device;

[0019] 2. The width adjustment device features a reinforcing plate to enhance the connection between the adjustment rail and the fixed frame, and a limiting block and a limiting groove to prevent the connecting seat from shifting, ensuring the synchronization and stability of the main and auxiliary guide rollers during the compaction process and avoiding uneven compaction caused by vibration. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the adjusting rail plate of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the auxiliary guide roller of this utility model;

[0023] Figure 4 A schematic diagram of the cross-sectional structure of the adjustable track plate;

[0024] In the diagram: 1. Asphalt compactor; 2. Fixed frame; 3. Main guide roller; 31. Connecting arm; 4. Adjusting mechanism; 41. Adjusting rail plate; 411. Two-way lead screw; 412. Limiting block; 413. Cover; 42. Worm gear assembly; 43. Wheel disc; 44. Secondary guide roller; 441. Connecting seat; 442. Limiting groove; 45. Reinforcing plate. Detailed Implementation

[0025] 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.

[0026] like Figures 1-4 As shown, this utility model provides a technical solution: the width adjustment device includes an asphalt compactor 1 and fixed frames 2 symmetrically installed on the asphalt compactor 1, with a main guide roller 3 connected between the two fixed frames 2;

[0027] An adjustment mechanism 4 is provided on the fixed frame 2, and a connecting arm 31 is fixedly connected to the fixed frame 2. The main guide roller 3 is rotatably connected between the two connecting arms 31.

[0028] The adjustment mechanism 4 includes an adjustment rail plate 41 connected to the fixed frame 2. The adjustment rail plate 41 has a movable groove. Two auxiliary guide rollers 44 are arranged opposite each other at the lower end of the adjustment rail plate 41. Both ends of the auxiliary guide rollers 44 are provided with connecting seats 441 that are slidably connected to the movable groove. The interior of the adjustment rail plate 41 is rotatably connected with a bidirectional lead screw 411 that is threaded through the connecting seat 441.

[0029] Specifically, the adjusting rail plate 41 in the adjusting mechanism 4 is installed on the fixed frame 2. The secondary guide roller 44 is slidably connected to the movable groove of the adjusting rail plate 41 through the connecting seats 441 at both ends. The bidirectional screw 411 passes through the connecting seat 441 and is threadedly engaged with it. When the bidirectional screw 411 rotates, the connecting seats 441 on both sides will move closer or further away synchronously because the threads are opposite, thereby adjusting the spacing of the secondary guide roller 44 and changing the compaction width of the combination of the main guide roller 3 and the secondary guide roller 44. The main guide roller 3 is located at the front end, and the two secondary guide rollers 44 are located on both sides of the rear end of the main guide roller 3. During the process of the main guide roller 3 pre-compacting the asphalt on the path, the secondary guide rollers 44 can compact both sides of the path compacted by the main guide roller 3, thereby forming an adjustment of the compaction width.

[0030] One end of the adjusting rail plate 41 is provided with a worm gear assembly 42 connected to the bidirectional lead screw 411.

[0031] More specifically, the worm gear assembly 42 is connected to the double-acting lead screw 411. Through the meshing transmission of the worm gear, the rotational motion of the wheel 43 is transmitted to the double-acting lead screw 411. By utilizing the self-locking characteristics and deceleration function of the worm gear, a stable and labor-saving wide-range adjustment can be achieved.

[0032] The housing of the worm gear assembly 42 is fixedly connected to the side of the adjusting rail plate 41 by bolts. The worm gear assembly 42 includes a housing and a worm wheel rotatably connected inside the housing. A worm is provided inside the housing and meshes with the worm wheel. The worm wheel is sleeved with a bidirectional lead screw 411. A wheel 43 is fixedly installed at one end of the worm.

[0033] Furthermore, the worm gear assembly 42 is fixed to ensure structural stability during power transmission and to avoid vibration or displacement affecting adjustment accuracy. The worm wheel of the worm gear assembly 42 is sleeved on the bidirectional lead screw 411, and the worm and worm wheel mesh. The wheel 43 is installed at one end of the worm. When the wheel 43 is rotated, the worm drives the worm wheel to rotate, which in turn drives the bidirectional lead screw 411 to rotate.

[0034] Limiting blocks 412 are installed on the inner side of the adjusting rail plate 41, and a limiting groove 442 is provided on the connecting seat 441 to slide with the bidirectional lead screw 411. The auxiliary guide roller 44 is rotatably connected to the connecting seat 441.

[0035] It should be noted that the limiting block 412 on the inner side of the adjusting rail plate 41 cooperates with the limiting groove 442 of the connecting seat 441 to restrict the circumferential rotation of the connecting seat 441, so that it can only slide linearly along the movable groove.

[0036] The upper end of the adjusting rail plate 41 is detachably connected to a cover 413, and a reinforcing plate 45 connected to the fixing frame 2 is fixedly installed on the outside of the adjusting rail plate 41.

[0037] It is worth mentioning that the cover 413 is detachably connected to the upper end of the adjusting rail plate 41 to close the movable groove, protect the internal bidirectional lead screw 411 and connecting seat 441, and the reinforcing plate 45 increases the connection rigidity between the adjusting mechanism 4 and the fixed frame 2 to avoid deformation due to load during the compaction process.

[0038] In the first embodiment, during operation, an adjusting rail plate 41 is installed on the fixed frame 2, and two relatively distributed auxiliary guide rollers 44 are installed on the adjusting rail plate 41 by the connecting seat 441. The distance between the two auxiliary guide rollers 44 can be adjusted by rotating the bidirectional screw 411. When the two auxiliary guide rollers 44 are close together, the compaction width of the main guide roller 3 and the auxiliary guide rollers 44 becomes narrower. When the two auxiliary guide rollers 44 are far apart, the compaction width of the main guide roller 3 and the auxiliary guide rollers 44 becomes wider. Through this adjustment method, the main guide roller 3 and the auxiliary guide rollers 44 can adapt to various road surfaces of different widths, and the asphalt in the edge area is compacted according to the adjustment of the auxiliary guide rollers 44.

[0039] In summary, this width adjustment device, by driving the secondary guide roller to move through a bidirectional screw, achieves adjustable compaction width, adapting to different road widths, and is particularly effective for compacting edge areas, significantly improving the device's versatility.

[0040] This wide-range adjustment device features a reinforcing plate to enhance the connection between the adjustment rail and the fixed frame, and a limiting block and a limiting groove to prevent the connecting seat from shifting. This ensures the synchronization and stability of the main and auxiliary guide rollers during compaction and avoids uneven compaction caused by vibration.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A width adjustment device for asphalt pavement compaction, comprising an asphalt compactor (1) and fixed frames (2) symmetrically mounted on the asphalt compactor (1), wherein a main guide roller (3) is connected between the two fixed frames (2), characterized in that: An adjustment mechanism (4) is provided on the fixed frame (2), and a connecting arm (31) is fixedly connected to the fixed frame (2). The main guide roller (3) is rotatably connected between the two connecting arms (31). The adjustment mechanism (4) includes an adjustment rail plate (41) connected to the fixed frame (2). The adjustment rail plate (41) has a movable groove. Two auxiliary guide rollers (44) are arranged opposite each other at the lower end of the adjustment rail plate (41). Both ends of the auxiliary guide rollers (44) are provided with connecting seats (441) that are slidably connected to the movable groove. The interior of the adjustment rail plate (41) is rotatably connected with a bidirectional lead screw (411) that is threaded through the connecting seat (441).

2. The asphalt pavement compaction width adjustment device according to claim 1, characterized in that: One end of the adjusting rail plate (41) is provided with a worm gear assembly (42) connected to the bidirectional lead screw (411).

3. The asphalt pavement compaction width adjustment device according to claim 2, characterized in that: The housing of the worm gear assembly (42) is fixedly connected to the side of the adjusting rail plate (41) by bolts.

4. The asphalt pavement compaction width adjustment device according to claim 3, characterized in that: The worm gear assembly (42) includes a housing and a worm gear rotatably connected inside the housing. A worm gear meshing with the worm gear is provided inside the housing. The worm gear is sleeved with the bidirectional lead screw (411). A wheel disc (43) is fixedly installed at one end of the worm gear.

5. The asphalt pavement compaction width adjustment device according to claim 4, characterized in that: The inner side of the adjusting rail plate (41) is fitted with a limiting block (412), and the connecting seat (441) is provided with a limiting groove (442) that is slidably sleeved with the bidirectional lead screw (411). The auxiliary guide roller (44) is rotatably connected to the connecting seat (441).

6. The asphalt pavement compaction width adjustment device according to claim 1, characterized in that: The upper end of the adjusting rail plate (41) is detachably connected to a cover (413), and a reinforcing plate (45) connected to the fixing frame (2) is fixedly installed on the outside of the adjusting rail plate (41).

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