Contact type anti-collision system of road roller

Abstract

The utility model discloses a road roller contact type anti-collision system which comprises two mounting bases, a mounting bracket is fixedly mounted at the upper ends of the two mounting bases, a travel switch is fixedly mounted on the inner wall of each mounting bracket, and the travel switches are fixedly mounted on the mounting brackets. A tensioning device is fixedly installed on the back face of each of the two installation supports, a safety protection plate is fixedly installed on the outer surfaces of the two tensioning devices through a connecting rod, and a travel switch is connected with an emergency stop switch through a signal line. And the safety is poor. According to the technical scheme, the contact type anti-collision system of the road roller is provided. The anti-collision device, namely the safety protection plate, is arranged in front of the road roller, so that emergency braking and automatic flameout operation of the road roller are finally achieved, collision accidents are effectively avoided, and the active safety of the road roller in a complex construction environment is greatly improved.

Description

Technical Field

[0001] This utility model relates to a road roller anti-collision device, and more specifically, to a road roller contact anti-collision system. Background Technology

[0002] A road roller is a heavy-duty construction machine primarily used to compact materials such as soil, gravel, and asphalt to ensure that the ground in roads, parking lots, airport runways, and other infrastructure construction projects reaches the required density and flatness. Road rollers apply pressure through their rollers to compact materials, thereby improving the stability and load-bearing capacity of the foundation. As an indispensable key piece of equipment in road construction, road rollers play a crucial role in the compaction operations of various large-scale engineering projects.

[0003] However, in actual use, it presents numerous safety hazards. On the one hand, the road roller's wide body and the position of the cab result in a large blind spot, making it difficult for the driver to fully observe the situation in front of and behind the vehicle. On the other hand, the road roller's braking performance is relatively poor. In addition, the construction environment is often complex and changeable, with many personnel and obstacles on the construction site, poor lighting at night, and operators potentially experiencing fatigue. These factors combine to cause frequent scraping and crushing accidents during operation, posing a serious threat to the personal safety of construction workers and the property safety of construction companies.

[0004] Therefore, developing a contact-type anti-collision system that can brake and shut down the engine of a road roller in a timely manner through mechanical contact is of great practical significance in order to effectively cope with complex and ever-changing construction environments, prevent safety accidents, overcome the shortcomings of existing technologies, and improve the operational safety of road rollers. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a contact-type anti-collision system for road rollers, which aims to solve the problem of frequent scraping and crushing accidents and poor safety of road rollers during operation.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a contact-type anti-collision system for a road roller, including a mounting base, wherein two mounting bases are provided, and mounting brackets are fixedly mounted on the upper ends of the two mounting bases. A limit switch is fixedly mounted on the inner wall of each mounting bracket, and a tensioner is fixedly mounted on the opposite sides of each of the two mounting brackets. A safety guard plate is fixedly mounted on the outer surface of the two tensioners through a connecting rod. An emergency stop switch is connected to the limit switch through a signal line. The emergency stop switch is connected to a brake valve and an engine respectively through a signal line. A rotary switch is connected to the emergency stop switch through a signal line.

[0007] The present invention is further configured such that a positioning bolt is movably inserted and connected at each of the four corners of the upper end of the mounting base.

[0008] The present invention is further configured such that the safety guard plate is installed on the front end of the road roller head by positioning bolts.

[0009] The present invention is further configured such that the mounting bracket is U-shaped.

[0010] In summary, this utility model has the following beneficial effects:

[0011] 1. By installing a collision avoidance device, i.e. a safety guard plate, in front of the road roller, when the road roller encounters an obstacle and triggers the safety guard plate, the limit switch is activated, the emergency stop switch is disconnected, the circuit is cut off, the brake valve is activated, and the engine is shut down, ultimately achieving emergency braking and automatic engine shutdown of the road roller. This effectively avoids collision accidents, greatly improves the active safety of the road roller in complex construction environments, and effectively protects the safety of construction personnel and the surrounding environment. It solves the problem of untimely response that may occur when relying on manual braking in existing technologies, and adds reliable protection for the safe operation of the road roller. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the circuit control structure of this utility model.

[0014] In the diagram: 1. Mounting base; 2. Mounting bracket; 3. Limit switch; 4. Tensioner; 5. Safety guard plate; 6. Emergency stop switch; 7. Brake valve; 8. Engine; 9. Rotary switch; 10. Positioning bolt. Detailed Implementation

[0015] 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 and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0016] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] A contact-type collision avoidance system for road rollers, such as Figures 1 to 2As shown, the system includes two mounting bases 1. Mounting brackets 2 are fixedly mounted on the upper ends of both mounting bases 1. A limit switch 3 is fixedly mounted on the inner wall of each mounting bracket 2. A tensioner 4 is fixedly mounted on the opposite sides of each mounting bracket 2. A safety guard plate 5 is fixedly mounted on the outer surface of both tensioners 4 via a connecting rod. An emergency stop switch 6 is connected to the limit switch 3 via a signal line. The emergency stop switch 6 is connected to the brake valve 7 and the engine 8 via signal lines. A rotary switch 9 is also connected to the emergency stop switch 6 via a signal line. A rotary switch 9 is added in parallel with the normally closed contact of the intermediate relay. In normal operation mode, the emergency stop switch 6 is closed, and the rotary switch 9 is also in the default position (i.e., the safety device is active). At this time, the road roller can start and run normally. When the road roller encounters an obstacle and triggers the guard plate (safety guard plate 5), the limit switch 3 is activated, the emergency stop switch 6 is opened, the circuit is cut off, the brake valve 7 is activated, and the engine 8 is shut down. At this time, the road roller cannot start. The operator manually resets the system by rotating the rotary switch 9, switching it from the default position to the reset position. The action of the rotary switch 9 changes the circuit path, bypassing the normally closed contact of the emergency stop switch 6, restoring the circuit. At this time, the circuit returns to normal, and the engine 8 can be restarted. In addition, the rotary switch 9 can be designed to require a special tool (such as a key) to turn, which can restrict the safety device to authorized personnel, increase safety, and prevent unauthorized personnel from arbitrarily disabling the safety protection. The tensioner 4, usually made of metal (such as steel or aluminum alloy), is used to protect the internal components and provide an installation interface. The tensioner 4 contains a torsion spring, which provides the necessary tension so that the safety guard plate 5 can quickly reset after a collision and provide additional cushioning and energy absorption when the safety guard plate 5 is impacted.

[0020] like Figure 1 As shown, a positioning bolt 10 is movably inserted and connected at each of the four corners of the upper end of the mounting base 1. The mounting base 1 is fixed to the frame by the high-strength positioning bolts 10, thereby stably installing the safety guard plate 5 on the front side of the road roller head.

[0021] like Figure 1 As shown, the safety guard plate 5 is installed on the front end of the roller head by positioning bolts 10.

[0022] Mounting bracket 2 is U-shaped.

[0023] Working Principle: Installation Process: Holes are pre-drilled on the frame of the road roller head to ensure accurate hole positioning. The mounting base 1 is fixed to the frame using high-strength positioning bolts 10, thereby stably installing the safety guard plate 5 on the front side of the road roller head. Anti-loosening washers are inserted and moved on the positioning bolts 10 to prevent them from loosening. The use of positioning bolts 10 facilitates disassembly and adjustment, providing high flexibility. The safety guard plate 5 is customized according to the specific dimensions of the road roller and the operating environment. The safety guard plate 5 is usually a flat structure to cover the critical areas in front of and behind the road roller. The safety guard plate 5 is usually made of high-strength, impact-resistant metal materials (such as steel plates) to ensure that it can effectively absorb and disperse energy during a collision.

[0024] Triggering Process: By connecting the normally closed contact of an intermediate relay in series with the emergency stop switch 6 of the equipment, and using four limit switches 3 connected in parallel to jointly control the circuit, when an obstacle hits the anti-collision device, i.e., the safety guard plate 5, the safety guard plate 5 moves backward. This displacement triggers the limit switches 3. After the limit switches 3 are triggered, their normally open contacts close, forming an electrical signal path. This signal is transmitted to the intermediate relay, energizing its coil. After the intermediate relay is energized, its normally open contacts close, forming a new electrical signal path. This new electrical signal path is connected to the control circuit of the emergency stop switch 6. In the road, the emergency stop switch 6 is usually a normally closed switch, which remains closed under normal circumstances. When the normally open contact of the intermediate relay closes, the control circuit of the emergency stop switch 6 receives a signal, causing the emergency stop switch 6 to open, thereby cutting off the main power supply or control signal of the equipment. After the emergency stop switch 6 opens, it directly cuts off the power supply to the solenoid coil of the brake valve 7, causing the brake valve 7 to close and start the braking system. After the emergency stop switch 6 opens, it cuts off the power supply or control signal to the fuel pump of the engine 8, causing the fuel pump to stop working and the engine 8 to shut down, ultimately achieving the emergency braking and automatic shutdown operation of the road roller.

[0025] In summary, by installing a collision avoidance device, namely the safety guard plate 5, in front of the road roller, when the road roller encounters an obstacle and triggers the safety guard plate 5, the limit switch 3 is activated, the emergency stop switch 6 is disconnected, the circuit is cut off, the brake valve 7 is activated, and the engine 8 is shut down, ultimately achieving emergency braking and automatic engine shutdown of the road roller. This effectively avoids collision accidents, greatly improves the active safety of the road roller in complex construction environments, effectively protects the safety of construction personnel and the surrounding environment, solves the problem of untimely response that may occur when relying on manual braking in existing technologies, and adds reliable protection for the safe operation of the road roller.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A contact-type anti-collision system for road rollers, comprising a mounting base (1), characterized in that: There are two mounting bases (1). Mounting brackets (2) are fixedly installed on the upper ends of the two mounting bases (1). A limit switch (3) is fixedly installed on the inner wall of each mounting bracket (2). A tensioner (4) is fixedly installed on the opposite back of each of the two mounting brackets (2). A safety guard plate (5) is fixedly installed on the outer surface of the two tensioners (4) through a connecting rod. An emergency stop switch (6) is connected to the limit switch (3) through a signal line. The emergency stop switch (6) is connected to the brake valve (7) and the engine (8) through signal lines respectively. A rotary switch (9) is connected to the emergency stop switch (6) through a signal line.

2. The roller contact collision avoidance system according to claim 1, characterized in that: Each of the four corners of the upper end of the mounting base (1) is movably connected with a positioning bolt (10).

3. The contact-type anti-collision system for road rollers according to claim 2, characterized in that: The safety guard plate (5) is installed on the front end of the roller head by positioning bolts (10).

4. The contact-type anti-collision system for road rollers according to claim 1, characterized in that: The mounting bracket (2) is U-shaped.

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