Carriage lifting and braking joint control device

Abstract

The utility model provides a carriage lifting brake joint control device, which comprises a control brake cylinder, a hand brake valve, a normally open solenoid valve group and a position sensor, the hand brake valve is connected with the control brake cylinder through a brake gas circuit, and the hand brake valve is used for opening and closing the gas circuit of the brake control brake cylinder; the normally open solenoid valve group is in signal connection with a power supply of a position sensor, the position sensor is arranged at the bottom of the carriage and used for controlling the normally open or close of the normally open solenoid valve group, and the normally open solenoid valve group is further in wire connection with a voice buzzer in a cab. The utility model provides a carriage lifting and braking joint control device which can avoid collision between a brim of a carriage and a building above due to the fact that the carriage is in gear for driving under the condition that no hopper falls into the carriage.

Description

Technical Field

[0001] This utility model relates to the field of controlling the lifting height of the cargo box of a wide-body dump truck, specifically to a cargo box lifting and braking control device, which is mainly used to control the lifting height of the cargo box during the unloading process of a wide-body dump truck. Background Technology

[0002] During the unloading process of wide-body dump trucks, due to the high lifting height of the truck bed, if the driver is not focused during operation, he may engage gear and drive without lowering the truck bed, causing the truck bed hood to hit the building above (dust canopy, roller shutter door, height restriction, etc.), which poses a significant safety hazard. Utility Model Content

[0003] Therefore, in order to address the above problems, a lifting and braking control device for the truck bed is proposed. The purpose of this utility model is to provide a control device for the lifting height of the truck bed during the unloading process of a wide-body dump truck, so as to avoid the truck bed being engaged in gear and driving without the truck bed being lowered, which could lead to a collision between the truck bed's hood and the building above.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vehicle lifting and braking control device, comprising a control brake caliper, a handbrake valve, a normally open solenoid valve assembly, and a position sensor. The handbrake valve is connected to the control brake caliper via a brake air circuit, and the handbrake valve is used to open and close the air circuit of the control brake caliper. The normally open solenoid valve assembly is connected to the power signal of the position sensor, and the position sensor is located at the bottom of the vehicle compartment and is used to control the normally open or closed state of the normally open solenoid valve assembly. The normally open solenoid valve assembly is also connected to a voice buzzer in the driver's cab.

[0005] A further improvement is that a relay is also connected between the normally open solenoid valve assembly and the voice buzzer in the driver's cab.

[0006] A further improvement is that the relay line is connected to a position switch and an emergency switch.

[0007] A further improvement is that the relay is also wired to a carriage lifting indicator.

[0008] This utility model installs a position sensor at the bottom of the carriage. The power signal of the position sensor is connected to the normally open solenoid valve group, which controls the normally open or closed solenoid valve group. When the carriage falls back to the parallel position, the position sensor disconnects the signal power P of the normally open solenoid valve, and the normally open solenoid valve group is normally open at port A. At this time, the air circuit of the handbrake valve brake control brake cylinder is opened, so that the brake is released and the vehicle can be normally engaged and started.

[0009] When the truck bed is raised (without the bucket lowered), a power signal is sent to the normally open solenoid valve group via the position sensor. At this time, the normally open solenoid valve group P closes at port A, and a signal is sent to the voice alarm device installed in the cab. The voice alarm device emits a voice alarm prompt, and the handbrake valve closes the air circuit of the brake control brake cylinder, preventing the brake control cylinder from disengaging the vehicle from gear and preventing normal starting. This avoids driving in gear when the truck bed is not lowered, which could lead to a collision between the truck bed hood and the building above. Attached Figure Description

[0010] Figure 1 This is a diagram of the control system for the lifting and braking linkage device of the vehicle compartment of this utility model. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] like Figure 1 As shown, a vehicle compartment lifting and braking control device includes a control brake caliper, a handbrake valve, a normally open solenoid valve assembly, and a position sensor. The handbrake valve is connected to the control brake caliper via a brake air circuit, and is used to open and close the air circuit of the control brake caliper. The normally open solenoid valve assembly is connected to the power signal of the position sensor, which is located at the bottom of the vehicle compartment and is used to control the normally open or closed state of the normally open solenoid valve assembly. The normally open solenoid valve assembly is also wired to a voice buzzer in the driver's cab. A relay is also wired between the normally open solenoid valve assembly and the voice buzzer in the driver's cab.

[0013] The specific working process of this utility model is as follows: By installing a position sensor at the bottom of the carriage, the power signal of the position sensor is connected to the normally open solenoid valve group, which controls the normally open or closed solenoid valve group. When the carriage falls back to the parallel position, the position sensor disconnects the signal power P of the normally open solenoid valve, and the normally open solenoid valve group is normally open at port A. At this time, the air circuit of the handbrake valve brake control brake cylinder is opened, so that the brake can be released and the vehicle can be normally shifted into gear and started.

[0014] When the truck bed is raised (without the bucket lowered), a power signal is sent to the normally open solenoid valve group via the position sensor. At this time, the normally open solenoid valve group P closes at port A, and a signal is sent to the voice alarm device installed in the cab. The voice alarm device emits a voice alarm prompt, and the handbrake valve closes the air circuit of the brake control brake cylinder, preventing the brake control cylinder from disengaging the vehicle from gear and preventing normal starting. This avoids driving in gear when the truck bed is not lowered, which could lead to a collision between the truck bed hood and the building above.

[0015] In one embodiment, the relay line is connected to a position switch and an emergency switch, and the relay line is also connected to a car lift indicator. Considering the variable environment of the transport site, some operations require the car to be lifted forward to unload the materials inside the car. The position switch and emergency switch mainly limit the lifting position of the car, and the car lift indicator is mainly used to indicate whether the car has started to lift. The control mode can be flexibly adjusted according to the working conditions at any time.

Claims

1. A vehicle carriage lifting and braking control device, characterized in that, It includes a control brake caliper, a handbrake valve, a normally open solenoid valve assembly, and a position sensor. The handbrake valve is connected to the control brake caliper via a brake air circuit, and is used to open and close the air circuit of the control brake caliper. The normally open solenoid valve assembly is connected to the power signal of the position sensor, which is located at the bottom of the vehicle compartment and is used to control the normally open or closed state of the normally open solenoid valve assembly. The normally open solenoid valve assembly is also connected to a voice buzzer in the driver's cab.

2. The vehicle lifting and braking control device according to claim 1, characterized in that, A relay is also connected to the normally open solenoid valve group and the voice buzzer in the driver's cab.

3. The vehicle carriage lifting and braking control device according to claim 2, characterized in that, The relay line is connected to a position switch and an emergency switch.

4. The carriage lifting and braking control device according to claim 2, characterized in that, The relay is also connected to a carriage lifting indicator.

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