Leveling control system of engineering service vehicle operation platform

Abstract

The utility model discloses a leveling control system of an engineering service vehicle operation platform, belongs to the field of leveling control of operation platforms, and solves the problems that the existing engineering service vehicle operation platform is easy to tip over and high in potential safety hazard during high-altitude operation. The device comprises a working platform and an executing mechanism, the executing mechanism comprises a lower leveling oil cylinder, an upper leveling oil cylinder and a lifting oil cylinder, the lower leveling oil cylinder and the lifting oil cylinder are connected between a large arm and a base, the upper leveling oil cylinder is connected between the large arm and the working platform, an inclination angle switch is arranged on the working platform and is communicated with a detection circuit, and the detection circuit is connected with the upper leveling oil cylinder. The execution mechanism is communicated with the detection circuit through the electromagnetic proportional valve, the electromagnetic proportional valve is connected with the lifting oil cylinder, and a rod cavity of the lower leveling oil cylinder is connected with a rod cavity of the upper leveling oil cylinder through an oil pipe. The mine safety monitoring system is stable in operation, can help workers to be in a safe operation environment during underground operation, can give an alarm in time when potential safety hazards exist, and is of great significance for maintaining safe production of mines.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of operation platform leveling control, specifically relates to a leveling control system of engineering service vehicle operation platform. BACKGROUND

[0002] The engineering service vehicle is the main auxiliary equipment of the trackless mining equipment of the underground mine, and is mainly used for lifting the operation personnel to the required height by the operation platform in the underground operation environment to carry out various high-altitude operations such as charging, drilling, edge hole finding, geophysical hole finding and roof stone treatment.

[0003] At present, since the engineering service vehicle is mainly used in the underground operation environment, the space is dim, the operation platform is manually operated when being lifted, the over-regulation condition exists, the operation platform is overturned, and the workers in the operation platform are in danger. Meanwhile, the poor underground operation environment and the high height also cause the operation platform to be easily overturned, the overall danger is high, and there is great safety hidden danger in production. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a leveling control system of engineering service vehicle operation platform to solve the problems that the existing engineering service vehicle operation platform is prone to overturning accidents and has high safety hidden danger when operating in the high altitude.

[0005] The technical scheme of the utility model is as follows: a leveling control system of engineering service vehicle operation platform, including an operation platform and an executing mechanism, the executing mechanism includes a lower leveling oil cylinder, an upper leveling oil cylinder and a lifting oil cylinder, the lower leveling oil cylinder and the lifting oil cylinder are connected between a large arm and a base, the upper leveling oil cylinder is connected between the large arm and the operation platform, an inclination switch is arranged on the operation platform, the inclination switch is communicated with a detection circuit, the executing mechanism is communicated with the detection circuit through an electromagnetic proportional valve, the electromagnetic proportional valve is connected with the lower leveling oil cylinder, the upper leveling oil cylinder and the lifting oil cylinder, and the rod cavity of the lower leveling oil cylinder and the rod cavity of the upper leveling oil cylinder are connected through an oil pipe.

[0006] As a further improvement of the utility model, an audible and visual alarm is arranged on the detection circuit, and the audible and visual alarm is composed of a buzzer and a flash lamp. When the inclination of the operation platform is greater than the threshold range set by the inclination switch, the audible and visual alarm works to remind the worker to manually level the operation platform.

[0007] As a further improvement of the utility model, the inclination switch is a single-shaft double-way inclination switch of the relay output type, the alarm threshold range set by the inclination switch is -5° to +5°, and the lock threshold range set by the inclination switch is -8° to +8°.

[0008] The utility model discloses beneficial effect: the utility model discloses through the inclination switch on the operation platform and the sound-light alarm of detection circuit linkage, when the operation platform produces the deviation, exceeds the threshold range, timely remind leveling operation platform. The utility model discloses still through the rod cavity of lower leveling oil cylinder and upper leveling oil cylinder of the execution mechanism both sides is connected, makes the hydraulic oil of any rod cavity to flow timely injects another rod cavity, and lower leveling oil cylinder and upper leveling oil cylinder jointly act, keep the balance of big arm all the time, and the lifting oil cylinder of execution mechanism links together, and when exceeding the threshold, will lock the direction, avoid the danger that platform deviation causes. The utility model discloses stable operation, can help staff in the downhole operation, is in the safe operation environment, and timely alarm reminds when having the security risk, and it is of great significance to keep the safe production of mine. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the structural schematic diagram of the utility model;

[0010] Figure 2 It is the structural schematic diagram of the utility model execution mechanism;

[0011] Figure 3 It is the action timing chart of the utility model inclination switch.

[0012] In the drawing: 1-lower leveling oil cylinder;2-upper leveling oil cylinder;3-lifting oil cylinder;4-execution mechanism;5-electromagnetic proportional valve;6-operation platform;7-inclination switch;8-detection circuit;9-sound-light alarm;10-big arm;11-base. DETAILED DESCRIPTION

[0013] The utility model will be further explained in detail below combining with the drawings and specific embodiment.

[0014] As Figures 1-2 Shown, a kind of engineering service vehicle operation platform's leveling control system, including operation platform 6 and execution mechanism 4, execution mechanism 4 includes lower leveling oil cylinder 1, upper leveling oil cylinder 2 and lifting oil cylinder 3, lower leveling oil cylinder 1 and lifting oil cylinder 3 are connected between big arm 10 and base 11, upper leveling oil cylinder 2 is connected between big arm 10 and operation platform 6, operation platform 6 is equipped with inclination switch 7, inclination switch 7 is communicated with detection circuit 8, execution mechanism 4 is communicated with detection circuit 8 by electromagnetic proportional valve 5, electromagnetic proportional valve 5 is connected with lower leveling oil cylinder 1, upper leveling oil cylinder 2 and lifting oil cylinder 3, the rod cavity of lower leveling oil cylinder 1 and the rod cavity of upper leveling oil cylinder 2 are connected by oil pipe, and lower leveling oil cylinder 1 and upper leveling oil cylinder 2 work synchronously.

[0015] Detection circuit 8 is equipped with sound-light alarm 9, and sound-light alarm 9 is composed of buzzer and flash lamp.When the inclination of operation platform 6 is greater than the threshold range set by inclination switch, sound-light alarm works, for reminding staff to manually level operation platform.

[0016] The tilt switch 7 is a single-axis dual-channel tilt switch with relay output. The alarm threshold range set for the tilt switch 7 is -5° to +5°, and the lock-up threshold range set for the tilt switch 7 is -8° to +8°.

[0017] In use, the tilt switch 7 is used to detect the tilt angle of the work platform 6. It is a single-axis dual-channel tilt switch with relay output. When the work platform 6 is horizontal or the tilt angle is within the alarm threshold range of -5° to +5° set by the tilt switch 7, the audible and visual alarm 9 is silent. When the tilt angle of the work platform 6 is greater than the alarm threshold range of -5° to +5° set by the tilt switch 7, but within the lockout threshold range of -8° to +8°, ​​the tilt switch 7 outputs a switching signal. At this time, the detection circuit 8 will not drive the electromagnetic proportional valve 5 to restrict the movement of the boom 10. That is, the operator can still control the boom 10 to move in the direction that increases the tilt angle of the work platform 6, but the audible and visual alarm will be activated. Alarm 9 reminds the operator to level the work platform 6. When the tilt angle of the work platform 6 is greater than the locking threshold set by the tilt switch 7 (-8° to +8°), the tilt switch 7 outputs a switching signal. At this time, the detection circuit 8 drives the electromagnetic proportional valve 5 to control the actuator 4 to stop the boom 10 from moving. That is, the operator cannot control the boom 10 to move in the direction that increases the tilt angle of the work platform 6, but can only move in the direction that decreases the tilt angle of the work platform 6. At the same time, the audible and visual alarm 9 is activated to remind the operator to level the work platform 6.

[0018] When the lifting cylinder 3 raises the boom 10, it causes the lower leveling cylinder 1 to extend, and the hydraulic oil in the rod chamber of the lower leveling cylinder 1 is squeezed out. The squeezed hydraulic oil enters the rod chamber of the upper leveling cylinder 2 through the oil pipe, and the upper leveling cylinder 2 retracts. Due to the precise arrangement of the hinge points of the entire leveling mechanism, the lower leveling cylinder 1 and the upper leveling cylinder 2 can work precisely synchronously. The upper leveling cylinder 2 retracts by the same amount as the lower leveling cylinder 1 extends. No matter how the boom 10 pitches, the working platform 6 can remain level.

[0019] like Figure 3 As shown, when the horizontal or tilt angle of the work platform 6 is within the alarm threshold range set by the tilt switch 7, the tilt switch 7 does not operate, and the relay output is normally open (1NO). When the tilt angle of the work platform 6 is greater than the set alarm threshold range, but within the lock-up threshold range, the relay output changes from normally open (1NO) to normally closed (1NC), the audible and visual alarm 9 sounds, but the electromagnetic proportional valve 5 does not restrict the movement of the boom 10 of the engineering service vehicle. When the tilt angle of the work platform 6 is greater than the set lock-up threshold range, the relay output changes from normally open (2NO) to normally closed (2NC), the audible and visual alarm 9 sounds, and at the same time, the electromagnetic proportional valve 5 drives the actuator 4 to restrict the movement of the boom 10 of the engineering service vehicle.

Claims

1. A leveling control system for an engineering service vehicle work platform, comprising a work platform (6) and an actuator (4), the actuator (4) comprising a lower leveling cylinder (1), an upper leveling cylinder (2) and a lifting cylinder (3), the lower leveling cylinder (1) and the lifting cylinder (3) being connected between the boom (10) and the base (11), and the upper leveling cylinder (2) being connected between the boom (10) and the work platform (6), characterized in that: The work platform (6) is equipped with a tilt switch (7), which is connected to the detection circuit (8). The actuator (4) is connected to the detection circuit (8) through an electromagnetic proportional valve (5). The electromagnetic proportional valve (5) is connected to the lower leveling cylinder (1), the upper leveling cylinder (2), and the lifting cylinder (3). The rod chamber of the lower leveling cylinder (1) and the rod chamber of the upper leveling cylinder (2) are connected through an oil pipe.

2. The leveling control system for an engineering service vehicle operating platform according to claim 1, characterized in that: The detection circuit (8) is equipped with an audible and visual alarm (9).

3. The leveling control system for an engineering service vehicle operating platform according to claim 1 or 2, characterized in that: The tilt switch (7) is a single-axis dual-channel tilt switch with relay output.

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