Sensor support and road roller

Abstract

To provide a technique in which even a road roller provided with a sensor for rearward confirmation on the rear wheel side can be loaded together with other heavy machinery such as a wheel loader on a bed of a truck as in the conventional manner.SOLUTION: A sensor support 20 is provided in a roughly U-shape so as to straddle a rear wheel 11 of a road roller 10. The sensor support 20 in the roughly U-shape axially secures lower end parts 22, 22 of parallel side bars 21, 21 to a main body of the road roller 10. Also, a top bar 25 that connects upper end parts 23, 23 of the side bars 21, 21 has an installation unit 26 for installing a sensor (not shown). The top bar 25 of the sensor support 20 is rotatable between an upper part of the rear wheel 11 of the road roller 10 and a front part of the rear wheel 11.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a heavy machine (road roller) used for paving roads. [Background technology]

[0002] Currently, construction sites are subject to a wide range of restrictions, including restrictions on worker working hours and rising construction costs. Under these circumstances, a variety of heavy machinery is required and used in road construction. Therefore, it is extremely important to be able to transport these heavy machines as efficiently as possible.

[0003] Figure 1 illustrates the "transportation of heavy machinery" that has actually been carried out at road construction sites up until now. As shown in the figure, conventionally, two heavy machines, a road roller 60 and a wheel loader 70, are loaded onto the loading platform 51 of a single truck 50 and transported (first, the road roller 60 is loaded onto the loading platform 51 while being driven under its own power, and then the wheel loader 70 is loaded onto the back of the road roller 60 on the same loading platform 51 while being driven under its own power). At this time, by placing the bucket 71 of the wheel loader 70 on the rear wheels 61 of the road roller 60, it is possible to load two heavy machines together, which would normally be impossible due to space constraints.

[0004] However, road construction sites inevitably involve danger because a large amount of heavy machinery is used. In recent years, in order to ensure safety at construction sites, an increasing number of heavy machinery have been fitted with sensors to detect obstacles (Patent Document 1, etc.).

[0005] For example, road rollers used for road paving at road construction sites must repeatedly move forward and backward to compact the ground. Therefore, it is absolutely essential for the driver to check not only what is ahead but also what is behind. Moreover, since the driver's seat is set facing forward, checking behind is more difficult and challenging than checking ahead.

[0006] Therefore, to assist the driver in checking behind the vehicle, sensors are attached to the road rollers. If there is an obstacle behind the vehicle, the sensors will detect it and alert the driver to the presence of the obstacle or activate the emergency brakes, thereby preventing accidents. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2019-12394 Summary of the Invention [Problem to be solved by the invention]

[0008] However, as road rollers equipped with such sensors have come to be used in road construction, problems such as those shown in Figure 2 have arisen. That is, in the same way as in FIG. 1, FIG. 2 shows two heavy machines, a road roller 60 and a wheel loader 70, being loaded onto the bed 51 of a single truck 50. However, because the road roller 60 has a sensor support 62 for attaching a sensor (not shown) above the rear wheels 61, the bucket 71 of the wheel loader 70 cannot be placed on the rear wheels 61 of the road roller 60.

[0009] As a result, the road roller 60 and wheel loader 70 currently have to be transported on separate trucks, meaning two trucks are now required where previously one truck would have been sufficient. It is no exaggeration to say that this is a serious situation that could worsen work efficiency at construction sites, increase the burden on those involved in the construction, and lead to longer construction costs and time. From a broader perspective, this is also contrary to the SDGs (Sustainable Development Goals).

[0010] Therefore, the inventors of the present invention have completed the objective of making it possible to load a road roller equipped with a rearward-looking sensor on the rear wheel side onto the bed of a truck together with other heavy machinery such as wheel loaders, as in the past. [Means for solving the problem]

[0011] In order to achieve the above object, the first invention of the present invention is a sensor support provided for attaching a rearward-checking sensor to the rear wheel side of a road roller, the support being characterized by being freely rotatable. The second invention is a sensor support according to the first invention, characterized in that the support is provided in a roughly U-shape so as to straddle the rear wheels of the road roller, the lower ends of the parallel side bars are axially fixed to the road roller body, and the top bar, which connects the upper ends of the side bars and has an installation section for installing a sensor, is freely rotatable between above the rear wheels of the road roller and in front of the rear wheels. A third invention is a road roller characterized by including the sensor support according to the first or second invention. [Effects of the Invention]

[0012] The present invention has the following effects. (1) The sensor support provided for attaching a rearward-view sensor to the rear wheel side of the road roller is rotatable, so that even if other heavy machinery such as a wheel loader is loaded onto the truck bed, the sensor and sensor support do not interfere with the other heavy machinery, making it possible to load them together. (2) The support body is arranged in a roughly U-shape so as to straddle the rear wheels of the road roller, and the lower ends of the parallel side bars are pivoted to the road roller body. The top bar, which connects the upper ends of the side bars and has an installation section for installing the sensor, is freely rotatable between above the rear wheels of the road roller and in front of the rear wheels. This allows the sensor support body (and the sensor) to move from above the rear wheels of the road roller to the front by rotating, so that part of the other heavy machinery to be stacked can be placed on the rear wheels of the road roller, making it possible to stack the machinery on one truck in the same way as before. (3) By making it possible to load multiple pieces of heavy machinery onto the bed of a truck, the efficiency of transporting heavy machinery will be improved, which will lead to solving the following problems and issues: Issues regarding the "Work Style Reform (Overtime Restrictions)" that came into effect in April 2024 in the transportation and construction industries Addressing the driver shortage in the transportation industry Addressing SDG Goal 7 (Affordable and Clean Energy) Goal 7.3: "By 2030, double the global rate of improvement in energy efficiency." [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 10 is an explanatory diagram illustrating a conventional example. [Figure 2] FIG. 1 is an explanatory diagram illustrating current problems. [Figure 3] FIG. 1 is an explanatory diagram (1) illustrating an embodiment of the present invention. [Figure 4] FIG. 2 is an explanatory diagram (2) for explaining an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] An embodiment of the present invention will be described with reference to FIGS. FIG. 3 illustrates a sensor support 20 provided on the road roller 10. The sensor support body 20 is provided in a roughly U-shape so as to straddle the rear wheels 11 of the road roller 10. The roughly U-shaped sensor support body 20 pivots the lower end portions 22, 22 of parallel side bars 21, 21 to the main body of the road roller 10. In addition, a top bar 25 connecting the upper end portions 23, 23 of the side bars 21, 21 is provided with an installation portion 26 and a protective frame 27 for installing and protecting a sensor (not shown).

[0015] The top bar 25 of the sensor support 20 can be freely rotated between above the rear wheels 11 of the road roller 10 (as shown in Figure 3(a)) and in front of the rear wheels 11 (as shown in Figure 3(b)). FIG. 3(a) shows a state in which the top bar 25 is positioned above the rear wheels 11 of the road roller 10, and the road roller 10 is in a state in which it can operate the sensor and check behind it during road construction. Figure 3(b) shows a state in which the top bar 25 is positioned in front of the rear wheels 11 of the road roller 10, and the road roller 10 does not need to activate the sensor to check behind it (for example, when being transported by truck or stored in a warehouse).

[0016] 3(b), the road roller 10 is provided with side bar holders 21a and protective frame holders 27a for supporting the sensor support 20 when the sensor support 20 is rotated and tilted forward. In the illustration, the side bar holders 21a are provided on both the left and right sides, but they may be provided on only one side. The side bar 21 is also provided with a cylindrical insertion portion 28, into which a bar (not shown) can be inserted and operated to safely and reliably rotate the sensor support 20. In addition to the bar, a hydraulic damper (jack) may be attached to further improve safety and reduce the workload. In this way, even if the sensor support 20 is made rotatable, the capacity and function of the installed sensor is not reduced in any way compared to conventional fixed sensor supports, and safe and quick work (rotation of the sensor support 20) can be achieved.

[0017] FIG. 4 illustrates a state in which the road roller 10 and the wheel loader 70 are loaded together on the loading platform 51 of the truck 50. As shown in the figure, the road roller 10 rotates the sensor support 20 and moves it so that the top bar 25 is positioned in front of the rear wheels 11 of the road roller 10. This allows the bucket 71 of the wheel loader 70 to be placed on the rear wheels 11 of the road roller 10. As a result, it is now possible to load two heavy machines (the road roller 10 and the wheel loader 70) together on one truck, just like in the conventional case (Figure 1). [Industrial Applicability]

[0018] The present invention can be widely used in road rollers that have a sensor support provided on the rear wheel side for mounting a rearward-checking sensor. [Explanation of symbols]

[0019] 10 Road Roller 11 Rear wheel 20 Sensor support (rotating type) 21 Sidebar 21a Side bar holder 22 Lower end 23 Upper end 25 Top Bar 26 Installation part 27 Protective Frame 27a Protective frame holder 28 Insertion part 50 tracks 51 Cargo bed 60 Road Roller 61 rear wheel 62 Sensor support (fixed type) 70 Wheel Loader 71 Bucket

Claims

1. A sensor support provided for attaching a rearward confirmation sensor to the rear wheel side of a road roller, The sensor support is characterized in that the support is rotatable.

2. The sensor support according to claim 1, wherein the support is provided in a roughly U-shape so as to straddle the rear wheels of the road roller, the lower ends of parallel side bars are axially fixed to the road roller body, and a top bar connecting the upper ends of the side bars and equipped with an installation section for installing a sensor is rotatable between above the rear wheels of the road roller and in front of the rear wheels.

3. A road roller comprising the sensor support according to claim 1 or 2.

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