Emergency stop control system of road roller and road roller

Abstract

The utility model discloses a road roller emergency stop control system and a road roller, the road roller emergency stop control system comprises an emergency stop switch, the emergency stop switch comprises a group of switch normally-open contacts and a group of switch normally-closed contacts, one end of each switch normally-open contact is connected with a power supply of a host and an air valve relay, and the other end of each switch normally-open contact is connected with a handle controller and the air valve relay; one end of the switch normally-closed contact is connected with a power supply of the host, and the other end of the switch normally-closed contact is connected with a power supply end of the engine ECU; the air valve relay comprises a switch end and a control end, the switch end and the control end are connected with the two ends of a switch normally-open contact of the emergency stop switch respectively, the switch end comprises a relay normally-open contact and a relay normally-closed contact, the relay normally-open contact is connected with the brake electromagnetic valve, and the relay normally-closed contact is connected with the release electromagnetic valve. The emergency stop control system for the road roller is simple in structure, low in cost, convenient to maintain, safe and reliable.

Description

Technical Field

[0001] The utility model relates to an emergency stop control system for a roller and a roller, belonging to the field of construction machinery. Background Art

[0002] During the construction process of construction machinery, it is often the case that a group of machines work simultaneously, and the construction period is relatively tight. Long-term operation by the driver is likely to cause fatigue. If not careful, there may be a collision with other machines, resulting in mechanical failures or personal safety losses. Therefore, it is necessary to be able to perform emergency stop control on the roller in case of an emergency. Summary of the Invention

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides an emergency stop control system for a roller and a roller, which can quickly realize the emergency stop of the roller in case of an emergency and ensure construction safety.

[0004] In order to achieve the above purpose, an emergency stop control system for a roller adopted by the utility model includes:

[0005] An emergency stop switch, which includes a set of normally open switch contacts and a set of normally closed switch contacts. One end of the normally open switch contacts is connected to the power supply of the main engine and the air valve relay, and the other end is connected to the handle controller and the air valve relay. One end of the normally closed switch contacts is connected to the power supply of the main engine, and the other end is connected to the power supply terminal of the engine ECU;

[0006] An air valve relay, which includes a switch end and a control end. The switch end and the control end are respectively connected to both ends of the normally open switch contacts of the emergency stop switch. The switch end includes a relay normally open contact and a relay normally closed contact. The relay normally open contact is connected to the brake solenoid valve, and the relay normally closed contact is connected to the release solenoid valve.

[0007] In some embodiments, fuses are installed between the normally open switch contacts, the normally closed switch contacts and the power supply of the main engine.

[0008] In some embodiments, multiple emergency stop switches are provided. The normally open switch contacts of the multiple emergency stop switches are connected in parallel with each other, and the normally closed switch contacts of the multiple emergency stop switches are connected in series with each other.

[0009] In some embodiments, the switch end of the air valve relay includes e contacts, f contacts and g contacts. The e contacts and the f contacts form a relay normally closed contact, and the e contacts and the g contacts form a relay normally open contact.

[0010] In some embodiments, the emergency stop switch is installed beside the operating handle in the cab or on both sides of the fuselage.

[0011] In some embodiments, the air valve relay is installed inside the control box, and the brake solenoid valve and the release solenoid valve are installed on the brake air circuit system.

[0012] In a second aspect of the present utility model, there is provided a road roller on which the emergency stop control system of the road roller is installed.

[0013] Compared with the prior art, the emergency stop control system of the road roller of the present utility model has a simple structure, low cost, convenient maintenance, safety and reliability. In an emergency, pressing the emergency stop switch can cut off the power output of the whole machine gear, turn off the engine and control the braking at the end of the air circuit, ensuring the safety of construction operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the principle structure of the present utility model;

[0016] In the figure: 1, fuse one; 2, fuse two; 3, emergency stop switch; 4, engine ECU; 5, handle controller; 6, air valve relay; 7, release solenoid valve; 8, brake solenoid valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the technical solutions of the present application will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0018] As Figure 1 shown, an emergency stop control system for a road roller includes an emergency stop switch 3, an air valve relay 6, a brake solenoid valve 8 and a release solenoid valve 7;

[0019] The emergency stop switch 3 includes a set of normally open switch contacts and a set of normally closed switch contacts. One end of the normally open switch contacts is connected to the power supply of the host and the air valve relay 6, and the other end is connected to the handle controller 5 and the air valve relay 6. One end of the normally closed switch contacts is connected to the power supply of the host, and the other end is connected to the power supply terminal of the engine ECU 4;

[0020] The air valve relay 6 includes a switch terminal and a control terminal. The control terminal controls the switch terminal. The switch terminal is connected to one end of the normally open contact of the emergency stop switch 3, and the control terminal is connected to the other end of the normally open contact. The switch terminal includes a relay normally open contact and a relay normally closed contact. The relay normally open contact is connected to the braking solenoid valve 8, and the relay normally closed contact is connected to the release solenoid valve 7.

[0021] In some embodiments, multiple emergency stop switches 3 may be provided. The normally open contacts of the multiple emergency stop switches 3 are connected in parallel with each other, and the normally closed contacts of the multiple emergency stop switches 3 are connected in series with each other. As Figure 1 shown, three emergency stop switches 3 can be set, one is installed beside the operating handle in the cab, and one is installed on each side of the fuselage.

[0022] In some embodiments, as Figure 1 shown, each emergency stop switch 3 includes an a contact, a b contact, a c contact, and a d contact. The a contact and the b contact form a normally closed contact of the switch, and the c contact and the d contact form a normally open contact of the switch;

[0023] The a contact in the normally closed contact of the switch is connected to the power supply of the main engine, and a fuse two 2 is installed between the a contact and the power supply of the main engine. The b contact is connected to the power supply terminal of the engine ECU 4;

[0024] The c contact in the normally open contact of the switch is connected to the power supply of the main engine and the switch terminal of the air valve relay 6. A fuse one 1 is installed between the c contact and the power supply of the main engine. The d contact is connected to the handle controller 5 and the control terminal of the air valve relay 6;

[0025] The switch terminal of the air valve relay 6 includes an e contact, an f contact, and a g contact. The e contact and the f contact form a relay normally closed contact. The e contact and the g contact form a relay normally open contact. The e contact is connected to the c contact of the emergency stop switch 3. The f contact is connected to the release solenoid valve 7, and the g contact is connected to the braking solenoid valve 8.

[0026] In some embodiments, the emergency stop switch 3 is installed beside the operating handle in the cab or at a place on both sides of the fuselage that is easily accessible quickly. The air valve relay 6 is installed inside the control box. The braking solenoid valve 8 and the release solenoid valve 7 are installed in the braking air circuit system. The structural design is reasonable, and the installation and use are convenient.

[0027] In the second aspect of the present invention, a road roller is provided, and the road roller is equipped with the above-mentioned road roller emergency stop control system.

[0028] During use, it can be directly installed on the original vehicle, including components such as fuses, multiple emergency stop switches 3 (taking three as an example), air valve relay 6, braking solenoid valve 8, release solenoid valve 7, air pipeline, etc.;

[0029] The normally closed contact of the emergency stop switch 3 is connected to the power supply of the main unit through fuse two 2. The normally closed contacts of multiple emergency stop switches 3 are connected in series. When none of the emergency stop switches 3 are pressed, it is connected to the power supply terminal of the engine ECU 4, and the engine is powered and can operate normally. When any one of the emergency stop switches 3 is pressed, the normally closed contact of the emergency stop switch 3 is disconnected, and the power supply of the engine ECU is disconnected (i.e., the engine shuts down) and cannot operate normally.

[0030] The normally open contacts of multiple emergency stop switches 3 are connected in parallel. While connecting the whole machine gear braking signal, it is also connected to the air valve relay 6. The normally closed contact of the air valve relay 6 is connected to the release solenoid valve 7 to ensure that the whole machine is in a non-braking state and can operate normally. If any one of the emergency stop switches 3 is pressed, the normally open contact of the emergency stop switch 3 closes, the whole machine gear braking signal is powered on, making the whole machine gear shift to neutral (i.e., disconnecting the power output of the whole machine), and at the same time, it is also connected to the air valve relay 6. The normally open contact of the air valve relay 6 then connects to the braking solenoid valve 8, causing air braking and realizing the end braking of the whole machine.

[0031] In an emergency, pressing any one of the emergency stop switches can achieve the control of cutting off the power output of the whole machine gear, engine shutdown, and end braking of the air circuit. The triple function provides safety guarantee and ensures the safety of construction operations. The emergency stop control system of the road roller of the present utility model has a simple structure, low cost, convenient maintenance, and is safe and reliable.

[0032] The above are only the embodiments of the present utility model. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present utility model, several deformations, improvements, or equivalent replacements can be made, and they should all be covered within the scope of the claims of the present utility model. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like can be used to explain the content of the claims.

Claims

1. An emergency stop control system for a road roller, characterized in that, Comprising: An emergency stop switch (3), which includes a set of normally open switch contacts and a set of normally closed switch contacts. One end of the normally open switch contacts is connected to the power supply of the main machine and the air valve relay (6), and the other end is connected to the handle controller (5) and the air valve relay (6). One end of the normally closed switch contacts is connected to the power supply of the main machine, and the other end is connected to the power supply terminal of the engine ECU (4); An air valve relay (6), which includes a switch end and a control end. The switch end and the control end are respectively connected to both ends of the normally open switch contacts of the emergency stop switch (3). The switch end includes a relay normally open contact and a relay normally closed contact. The relay normally open contact is connected to the brake solenoid valve (8), and the relay normally closed contact is connected to the release solenoid valve (7).

2. The emergency stop control system for a road roller according to claim 1, characterized in that, Fuses are installed between the normally open switch contacts, the normally closed switch contacts and the power supply of the main machine.

3. The emergency stop control system for a road roller according to claim 1 or 2, characterized in that, A plurality of emergency stop switches (3) are provided. The normally open switch contacts of the plurality of emergency stop switches (3) are connected in parallel with each other, and the normally closed switch contacts of the plurality of emergency stop switches (3) are connected in series with each other.

4. The emergency stop control system for a road roller according to claim 1, wherein, The switch end of the air valve relay (6) includes an e contact, an f contact and a g contact. The e contact and the f contact form a relay normally closed contact, and the e contact and the g contact form a relay normally open contact.

5. The emergency stop control system for a road roller according to claim 1, characterized in that, The emergency stop switch (3) is installed beside the operating handle in the cab or on both sides of the fuselage.

6. The emergency stop control system for a road roller according to claim 1 or 5, characterized in that, The air valve relay (6) is installed inside the control box, and the brake solenoid valve (8) and the release solenoid valve (7) are installed on the brake air circuit system.

7. A road roller, characterized in that, The road roller is equipped with the road roller emergency stop control system according to any one of claims 1-6.

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