Leveling instrument probe arm of paver

Abstract

The utility model belongs to the technical field of road paving construction, and particularly relates to a leveling instrument probe arm of a paver, which comprises a lower body, an upper body, a connecting rod and a guide rod. The lower end of the guide rod is fixedly connected with the lower body, the upper end of the guide rod is rotatably connected with the upper body, three tooth-like protrusions are formed at the upper end of the lower body, the lower end face of the upper body is matched with the lower body in shape, and the upper body is provided with three wire lapping rods. When the upper ridge part crosses the lower ridge part, the upper body rotates and ascends under the guide of the convex part, and when the upper ridge part crosses the lower ridge part, the upper body rotates and descends under the action of gravity, so that the other wire lapping rod is switched to be lapped with the datum line, and the three wire lapping rods are alternately lapped with the datum line, so that automatic passing of the leveling instrument probe arm of the paver at the datum line pile is realized; the workload of on-site operators is reduced, the operation task is simplified, and the leveling instrument probe arm of the paver does not need extra energy consumption and is beneficial to energy conservation and environmental protection.

Description

Technical Field

[0001] The utility model belongs to the technical field of road paving construction, and in particular relates to a probe arm of a leveling instrument for a paver. Background Art

[0002] In the paving operation of road engineering construction, in order to effectively control the loose paving thickness and flatness, it is necessary to measure and lay out the baseline before the paving operation. After the baseline is laid out, the paver leveling instrument slide bar is placed on the baseline. The paver leveling instrument senses the height of the baseline by sliding the slide bar on the baseline, and then effectively controls the loose paving thickness and flatness. Accurate baseline laying is the most basic guarantee for paving operations to meet regulatory requirements. In the process of laying out the baseline on site, in order to ensure the accuracy of the baseline, it is necessary to lay out baseline stakes at a certain distance. The baseline stakes will be significantly higher than the baseline during the process of fixing the baseline.

[0003] In the prior art, the sliding bar of the paver leveling instrument will encounter obstacles of the baseline piles during the sliding process on the baseline and cannot pass automatically. In this case, it can only rely on on-site operators to monitor and adjust, and manually move the sliding bar to the baseline on the other side of the baseline pile before continuing the operation. On the surface, this work process is simple and not very intense, but if we look at the entire project volume, this work is not only complicated, but also very labor-intensive for on-site operators. In addition, on-site operators also need to pay close attention to changes in the position of the sliding bar in real time, and make adjustments at any time when problems are discovered. Such high-intensity mental concentration can easily cause fatigue to operators. If a problem occurs, it will not only affect the smooth progress of the construction, but may even cause scratches and damage to the sliding bar.

[0004] With the continuous development and improvement of current road engineering construction technology, traditional construction technology is also gradually changing in the actual construction process to adapt to new development needs. Reducing the number of on-site workers and labor intensity has become the development trend of current road construction technology. The Chinese patent "A paver paving thickness control device" was applied for on August 20, 2021, and the authorization announcement date is January 18, 2022. The authorization announcement number is CN215561713U, which discloses a paver paving thickness control device, including multiple adjustable bolt tripods, multiple adjustable bolt tripods are arranged on both sides of the road along the paving direction, and the elevation is consistent. The adjustable bolt tripods on the same side are connected with a full-length steel cable, and the steel cable is embedded in the top of the adjustable bolt tripod. The steel cable is flush with or exposed at the top of the adjustable bolt tripod. The tripod is firmly supported, the height of the bolt is adjusted to accurately control the paving thickness, a cross slot is opened on the top of the bolt, and the construction steel cable is embedded in the way that the paver sensor passes through at one time.

[0005] The above-mentioned prior art has solved the problem of the passability of the sliding rod to a certain extent, but there are still some shortcomings. At some construction sites, it is necessary to fill up both sides of the road or have enough space to stably place the adjustable bolt tripod, while the traditional steel bar inserted baseline piles do not need to fill up both sides of the road, and occupy less space, and are more convenient to operate. In addition, in actual construction, the baseline is usually in a straightened state, and the adjustable bolt tripod may be displaced under the action of the tension of the baseline, while the steel bar inserted baseline piles are more stable. Therefore, how to enable the paver leveling instrument to pass through the baseline piles by itself without human intervention is a problem that needs to be solved urgently in this technical field. Utility Model Content

[0006] In order to overcome the defects of the prior art, the utility model provides a paver leveling instrument probe arm, which can replace the paver leveling instrument slide bar in the prior art and pass through the reference line pile automatically without manual intervention. The technical solution of the utility model is as follows:

[0007] A leveling instrument probe arm for a paving machine comprises a lower body, an upper body, a connecting rod and a guide rod.

[0008] The guide rod is arranged vertically, and the connecting rod is connected to the upper end of the guide rod and arranged at a certain angle; a vertically arranged through hole is formed in the inner center of the upper body, and the guide rod passes through the through hole, and the lower end of the guide rod is fixedly connected to the lower body, and the upper body can slide and rotate along the guide rod; three identical, tooth-like protrusions are formed at the upper end of the lower body, and an ascending slope is formed on one side of the protrusion, and a descending slope is formed on the other side of the protrusion. Both the ascending slope and the descending slope are smooth spiral surface structures, and the three protrusions are evenly and equidistantly arranged around the guide rod; the shape of the lower end of the upper body is consistent with the shape of the upper end of the lower body, and the upper body is provided with three wiring rods, and the three wiring rods are radially, horizontally, and evenly arranged with the guide rod as the center.

[0009] An elastic connecting component capable of tightening the upper body and the lower body is arranged between the upper body and the lower body.

[0010] The lower ridge of the lower body is more inclined to the side of the descending slope, that is, the slope of the descending slope is greater than the slope of the ascending slope.

[0011] The outside of the wiring rod is covered with a roller.

[0012] The end of the wiring rod is a spherical structure.

[0013] A limiting component is arranged on the upper part of the guide rod.

[0014] The guide rod and the lower body adopt a detachable connection structure.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a probe arm for a leveling instrument for a spreading machine. When the wiring rod connected to the upper body encounters an obstacle of a reference line pile, the upper body will rotate and rise along the rising slope of the lower body. When the upper ridge passes over the lower ridge, the upper body will rotate and descend along the descending slope under the action of gravity, thereby switching to another wiring rod to overlap the reference line, thereby realizing the automatic passage of the probe arm of the leveling instrument for the spreading machine at the reference line pile. The working process does not require human intervention, which reduces the workload of on-site workers and simplifies work tasks. In addition, the probe arm of the leveling instrument for the spreading machine does not require additional energy consumption, which is beneficial to energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of the probe arm of the leveling instrument for a paver according to the utility model;

[0018] Figure 2 A schematic diagram of the lower body structure of the probe arm of the paver leveling instrument of the utility model;

[0019] Figure 3 A schematic diagram of the upper body structure of the probe arm of the paver leveling instrument of the utility model;

[0020] Figure 4 A schematic diagram of the working principle of the probe arm of the leveling instrument for a paver according to the utility model.

[0021] Reference numerals:

[0022] 10-lower body; 11-convex part; 12-ascending slope; 13-descending slope; 14-lower ridge;

[0023] 20-upper body; 21-through hole; 22-wire rod; 23-weight device; 24-upper ridge;

[0024] 30-connecting rod; 31-guide rod; 32-limiting component;

[0025] 40 - baseline;

[0026] 50-baseline stakes;

[0027] 60-Paver leveler. DETAILED DESCRIPTION

[0028] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] See also Figure 1A paving machine leveling instrument probe arm comprises a lower body 10, an upper body 20, a connecting rod 30 and a guide rod 31. The guide rod 31 is arranged vertically, and the connecting rod 30 is connected to the upper end of the guide rod 31 and arranged at a certain angle. The angle between the connecting rod 30 and the guide rod 31 is set according to the positional relationship between the paving machine leveling instrument 60 and the reference line 40 at the work site and the working requirements of the paving machine leveling instrument 60. A vertically arranged through hole 21 is formed in the center of the upper body 20, and the guide rod 31 passes through the through hole 21, and the lower end of the guide rod 31 is fixedly connected to the lower body 10, and the upper body 20 can slide and rotate along the guide rod 31; the connecting rod 30 is used to connect with the paving machine leveling instrument 60, and transmit the floating changes of the paving machine leveling instrument probe arm along the reference line to the paving machine leveling instrument 60.

[0030] See also Figure 2 Three identical tooth-like protrusions 11 are formed at the upper end of the lower body 10, an ascending slope 12 is formed on one side of the protrusion 11, and a descending slope 13 is formed on the other side of the protrusion 11. Both the ascending slope 12 and the descending slope 13 are smooth spiral surface structures, and a lower ridge 14 is formed at the connection between the ascending slope 12 and the descending slope 13. The three protrusions 11 are evenly and equally arranged around the guide rod 31.

[0031] See also Figure 3 The shape of the lower end of the upper body 20 matches the shape of the upper end of the lower body 10 and forms three upper ridges 24. The upper body 20 is provided with three wiring rods 22, which are radially, horizontally, and evenly arranged with the guide rod 31 as the center. When the wiring rods 22 are subjected to external force, they can drive the upper body 20 to rotate with the guide rod 31 as the axis, and the ascending slope 12 converts the rotation of the upper body 20 into the ascending movement of the upper body 20; when the wiring rods 22 are free from the external force, the upper body 20 rotates and descends along the descending slope 13 under the action of its own gravity until it coincides with the lower body 10.

[0032] See also Figure 4During the specific implementation, the connecting rod 30 is connected to the paver leveling instrument 60, and the angles and heights of the three wiring rods 22 are adjusted by the counterweight device 23 to adapt to the pre-arranged reference line 40. The first wiring rod 22 is vertically placed on the reference line 40, and the first wiring rod 22 enters the working state. The first wiring rod 22 slides on the reference line 40 as the paver moves. The paver leveling instrument 60 senses the height of the reference line 40 through the wiring rod 22, and then controls the loose paving thickness and flatness. When the first wiring rod 22 does not touch the reference line pile 50, the upper body 20 has a downward movement tendency under the action of its own gravity, so that the upper body 20 is consistent with the lower body 10. In order to ensure that the wiring rod 22 can be closely connected with the reference line 40 and provide a sufficiently large feedback force for the paver leveler 60, the upper body 20 should be provided with a sufficiently large weight, or an elastic connecting component that can tighten the upper body 20 and the lower body 10 is provided between the upper body 20 and the lower body 10; when the first wiring rod 22 touches the reference line pile 50, it will be hindered by the reference line pile 50, so that the first wiring rod 22 drives the upper body 20 to rotate with the guide rod 31 as the axis, and the upper body 20 rotates and rises under the guidance of the ascending slope 12, and the first wiring rod 22 gradually separates from the reference line 40 as the upper body 20 rotates and rises; at the same time, the second wiring rod 22 rotates with the upper body 20 The upper body 20 rotates and rises and gradually moves to above the baseline 40; when the upper ridge 24 of the upper body 20 reaches the position of the lower ridge 14 of the lower body 10, the height difference between the upper body 20 and the lower body 10 reaches the maximum, and the upper body 20 continues to rotate so that the upper ridge 24 of the upper body 20 passes over the lower ridge 14 of the lower body 10, and then the upper body 20 rotates and slides down along the descending slope 13 under the action of its own gravity until the upper body 20 and the lower body 10 coincide with each other again. At this time, the second wiring rod 22 is placed on the baseline 40 and enters the working state, and the second wiring rod 22 slides forward on the baseline 40 as the paver moves; when the second wiring rod 22 contacts the next baseline pile 50, the upper body 20 again uses the rotational rising and rotating descending actions to make the second wiring rod 22 separate from the baseline 40, and the third wiring rod 22 overlaps the baseline 40 and enters the working state. In this way, the three wiring rods 22 are alternately connected with the reference line 40, so that the paving machine leveling instrument probe arm automatically passes through the reference line pile 50.

[0033] As a first improvement of this embodiment, a roller is sleeved on the outside of the wiring rod 22, and the end of the wiring rod 22 is a spherical structure. The roller can reduce the friction resistance between the wiring rod 22 and the reference line 40, and the spherical structure at the end of the wiring rod 22 can ensure that the end of the wiring rod 22 and the reference line 40 overlap smoothly, and can also limit the roller to prevent the roller from falling off the wiring rod 22.

[0034] As the second improvement of this embodiment, the lower ridge 14 of the lower body 10 is more inclined to the side of the descending slope 13, that is, the slope of the descending slope 13 is greater than the slope of the ascending slope 12, so that the upper body 20 can fall faster, and the upper body 20 and the lower body 10 can restore the matching state faster.

[0035] As a third improvement of this embodiment, a limiting component 32 is provided on the upper portion of the guide rod 31, and the limiting component 32 limits the rising height of the upper body 20 to prevent the upper body 20 from exceeding the allowed rising height during operation.

[0036] As a fourth improvement of this embodiment, the guide rod 31 and the lower body 10 adopt a detachable connection structure to facilitate the installation, disassembly and maintenance of the device, such as threaded connection, bolt connection, clamping connection and other connection structures.

[0037] It should be noted that in actual on-site paving operations, it is usually necessary to set up a paver leveler 60 on both sides of the road to control the paving thickness and flatness. When the line pole 22 encounters the obstruction of the reference line pile 50, the paver leveler probe arms on both sides rotate in opposite directions, so it is necessary to set the paver leveler probe arm structures on the left and right sides as mirror images of each other. The present application is not limited to the described implementation mode, and there is no fixed restriction on the scope of use, and it can be applied in combination with the actual situation on site.

Claims

1. A leveling instrument probe arm for a paver, characterized in that: It comprises a lower body (10), an upper body (20), a connecting rod (30) and a guide rod (31); The guide rod (31) is arranged vertically, and the connecting rod (30) is connected to the upper end of the guide rod (31) and arranged at a certain angle; a vertically arranged through hole (21) is formed in the center of the upper body (20), the guide rod (31) passes through the through hole (21), and the lower end of the guide rod (31) is fixedly connected to the lower body (10), and the upper body (20) can slide and rotate along the guide rod (31); three identical tooth-like protrusions (11) are formed on the upper end of the lower body (10), and the protrusions ( A rising slope (12) is formed on one side of the convex portion (11), and a descending slope (13) is formed on the other side of the convex portion (11); both the rising slope (12) and the descending slope (13) are smooth spiral surface structures; the three convex portions (11) are evenly and equidistantly arranged around the guide rod (31); the shape of the lower end of the upper body (20) matches the shape of the upper end of the lower body (10); the upper body (20) is provided with three wiring rods (22); the three wiring rods (22) are radially, horizontally and evenly arranged with the guide rod (31) as the center.

2. The probe arm of the leveling instrument for a paver according to claim 1, characterized in that: An elastic connecting component capable of tightening the upper body (20) and the lower body (10) is provided between the upper body (20) and the lower body (10).

3. The probe arm of the leveling instrument for a paver according to claim 1, characterized in that: The lower ridge (14) of the lower body (10) is more inclined to the side of the descending slope (13), that is, the slope of the descending slope (13) is greater than the slope of the ascending slope (12).

4. A leveling instrument probe arm for a paver according to any one of claims 1 to 3, characterized in that: The wiring rod (22) is covered with a roller on the outside.

5. A leveling instrument probe arm for a paver according to any one of claims 1 to 3, characterized in that: The end of the wiring rod (22) is a spherical structure.

6. A leveling instrument probe arm for a paver according to any one of claims 1 to 3, characterized in that: A limiting component (32) is arranged on the upper part of the guide rod (31).

7. A leveling instrument probe arm for a paver according to any one of claims 1 to 3, characterized in that: The guide rod (31) and the lower body (10) adopt a detachable connection structure.

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