CN-224213075-U - Mechanical anti-collision reset system and tyre road roller

CN224213075UCN 224213075 UCN224213075 UCN 224213075UCN-224213075-U

Abstract

The utility model relates to the field of engineering equipment, in particular to a mechanical anti-collision resetting system and a pneumatic tyre roller. The mechanical anti-collision reset system comprises a mechanical travel switch, a parking electromagnetic valve, a general relay, a reset switch and a reset switch, wherein the general relay is provided with a first passage and a second passage connected with the mechanical travel switch, the first passage is provided with a normally closed contact and a normally open contact, the normally closed contact is configured to be connected with the parking electromagnetic valve when the second passage is powered off, the normally open contact is configured to be selectively connected with the second passage when the second passage is powered on, and the reset switch is provided with a zero gear for communicating the normally open contact with the second passage and a first gear for disconnecting the normally open contact from the second passage. The mechanical anti-collision reset system utilizes the universal relay and the reset switch to realize safe reset of the parking electromagnetic valve, so that the parking electromagnetic valve is prevented from being parked after the mechanical travel switch is reset, and secondary injury and even repeated injury to injured personnel are avoided.

Inventors

HE YONGJUN
ZHAO CHENGLONG
HUANG GUODONG
DU HAIDONG
LI JIANPING
HUANG CHENG

Assignees

山推工程机械股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250331

Claims (6)

1. A mechanical anti-collision reset system, comprising: a mechanical travel switch (1) connected to the pull wire and configured to change a normally open state when the pull wire is touched; A parking electromagnetic valve (2) connected with the braking system; A general relay (3) having a first passage (31) and a second passage (32) connected to the mechanical travel switch (1), the first passage (31) having a normally closed contact (311) and a normally open contact (312), the normally closed contact (311) being configured to be connected to the parking solenoid valve (2) when the second passage (32) is de-energized, the normally open contact (312) being configured to be selectively connected to the second passage (32) when the second passage (32) is energized; a reset switch (4) having a zero gear that communicates the normally open contact (312) with the second passage (32), and a first gear that opens the normally open contact (312) with the second passage (32).
2. A mechanical anti-collision reset system according to claim 1, characterized in that the mechanical travel switch (1) is arranged in parallel with a plurality.
3. A mechanical anti-collision reset system according to claim 1, characterized in that the first path (31) and the mechanical travel switch (1) are connected with a fuse (5).
4. A mechanical anti-collision reset system according to claim 1, wherein the second passage (32) is connected with an anti-collision indicator light (6).
5. The mechanical anti-collision reset system according to claim 4, wherein the second path (32) comprises a first connecting wire (321) connected with the mechanical travel switch (1), a second connecting wire (322) connected with the first connecting wire (321) and the reset switch (4), and a third connecting wire (323) connected with the reset switch (4) and a normally open contact (312), the reset switch (4) is connected with a fourth connecting wire (33) connected with the anti-collision indicator lamp (6), and the third connecting wire (323) is connected with the fourth connecting wire (33).
6. A pneumatic tire roller, comprising: The vehicle body is provided with a stay wire; a brake system mounted in the vehicle body, and A mechanical anti-collision reset system according to any one of claims 1-5, wherein a mechanical travel switch (1) of the mechanical anti-collision reset system is connected to the pull wire, and a parking solenoid valve (2) of the mechanical anti-collision reset system is connected to the brake system.

Description

Mechanical anti-collision reset system and tyre road roller Technical Field The utility model relates to the field of engineering equipment, in particular to a mechanical anti-collision resetting system and a pneumatic tyre roller. Background The tyre road roller is one kind of road surface machine in engineering machine, and several pneumatic tyres densify road. The tyre roller has 3-5 tyres in front and 4-6 tyres in back, and is suitable for compacting various materials, including foundation layer, secondary foundation layer, asphalt layer, etc. and is one kind of compacting machine for highway, city and national defense construction. Because the external dimension of the pneumatic tire roller is relatively wide, the pneumatic tire roller is designed to be operated by two persons in consideration of the convenience of operation of drivers, namely one left and one right, and two drivers operate simultaneously, so that the construction in four directions of front, rear, left and right of the vehicle and the safety of personnel are considered. However, the same tyre roller is often driven and operated by one person on the construction site, and because the external dimension of the tyre roller is relatively wide, a very large visual field blind area exists on the front, back, left and right sides of a driver, and other reasons, such as mechanical failure of a vehicle, fatigue driving of the driver, misoperation, carelessness and the like, are added, the safety of constructors around the vehicle is often endangered on the construction site, and the casualties of the constructors are easily caused. Accordingly, there is a need in the art for a new solution to the above-mentioned problems. Disclosure of Invention In order to improve or solve the technical problem that the safety of constructors around a vehicle is easily endangered by a pneumatic tire roller in the prior art, the utility model provides a mechanical anti-collision reset system. The mechanical anti-collision reset system comprises a mechanical travel switch, a parking electromagnetic valve, a general relay, a normally closed contact and a normally open contact, wherein the mechanical travel switch is connected with a pull wire and is configured to change a normally open state when the pull wire is touched, the parking electromagnetic valve is connected with a braking system, the general relay is provided with a first passage and a second passage connected with the mechanical travel switch, the first passage is provided with the normally closed contact and the normally open contact, the normally closed contact is configured to be connected with the parking electromagnetic valve when the second passage is powered off, the normally open contact is configured to be selectively connected with the second passage when the second passage is powered on, and the reset switch is provided with a zero gear for communicating the normally open contact with the second passage and a first gear for disconnecting the normally open contact from the second passage. The utility model relates to a mechanical anti-collision reset system which comprises a mechanical travel switch, a parking electromagnetic valve, a general relay and a reset switch. The mechanical travel switch is connected with a stay wire on the pneumatic tire roller, and is converted from a normally open state to a normally closed state when the stay wire is touched. The parking solenoid valve is connected with a braking system of the pneumatic tyre roller, the vehicle is not parked for braking when the parking solenoid valve is electrified, and the vehicle is parked for braking when the parking solenoid valve is deenergized. The general relay is provided with a first passage and a second passage, the first passage is provided with a normally-closed contact and a normally-open contact, the second passage is used for controlling the contact connection of the first passage, when the mechanical travel switch is in a normally-open state, the second passage is disconnected, the normally-closed contact of the first passage is connected with the parking electromagnetic valve, the parking electromagnetic valve is electrified, and when the mechanical travel switch is in a normally-closed state, the second passage is closed, the parking electromagnetic valve is disconnected with the normally-closed contact, and the parking electromagnetic valve is powered off. The reset switch is provided with a zero gear and a first gear, when the reset switch is in the zero gear, the normally open contact of the first passage is connected with the second passage through the reset switch to supply power to the second passage, even if the mechanical travel switch is changed from a normally closed state to a normally open state, the second passage is still closed, the parking electromagnetic valve is in a power-off state, when the reset switch is in the first gear, the normally open contact of the first passage is disconnected wi