CN219604427U - Rock hammer falls to ground detecting system - Google Patents

Abstract

The utility model discloses a rock drilling hammer landing detection system which comprises a control module and a circuit module, wherein pressure signals in the control module are converted into analog quantities of a PLC (programmable logic controller) by detecting the pressure of a fixed pulley block at the top of a suspension arm, and retraction of a winch is controlled to realize parking control of the rock drilling hammer. The problem that the falling height of the rock drilling hammer is difficult to determine when the sea bed is uneven is solved, the condition of empty smashing occurs, damage to equipment is avoided, and the service life of the steel wire rope is prolonged.

Description

Rock hammer falls to ground detecting system

Technical Field

The utility model relates to the field of rock drilling construction engineering, in particular to a system for detecting the landing of a rock drilling hammer.

Background

The existing underwater rock drill and the existing underwater foundation bed rammer or all-in-one machine are characterized in that a winch of automatic control equipment freely descends a hammer to the seabed, after the descending height of the rock drill hammer is set by a control system, the height is fixed, the hammer is easy to smash when encountering the height with overlarge height difference, the equipment structure is easy to be damaged under the condition, the service life of a steel wire rope is reduced, and the control of work efficiency improvement, cost and energy consumption is not facilitated. Or when the sea bed is uneven, the tamping and rock drilling automatic operation can not control the rock drilling hammer to fall to the bottom every time.

Disclosure of Invention

The utility model aims to overcome the influence of sea bed height difference on rock drilling and tamping operations in the prior art and provides a rock drilling hammer landing detection system.

In order to achieve the above object, the present utility model provides the following technical solutions:

the utility model provides a rock drilling hammer falls to ground detecting system, includes the hoist engine, control the PLC electronic box of hoist engine, the davit, install fixed pulley group on the davit, direction assembly pulley, and rock drilling hammer, wherein wire rope passes through in proper order by the hoist engine the direction assembly pulley the fixed pulley group is connected to the rock drilling hammer, its characterized in that, detecting system still includes install pivot formula pressure sensor in the fixed pulley group when pivot formula pressure sensor's detected value is less than predetermined threshold value, the PLC electronic box stops the action of letting down of hoist engine.

Preferably, the pin-type pressure sensor is communicated with the PLC electronic box through a serial port.

Preferentially, the shaft pin type pressure sensor transmits a pressure signal to a signal module, and the signal module converts the pressure signal into analog quantity and transmits the analog quantity to the PLC electric box.

Preferably, the predetermined threshold is 0.

Preferably, the PLC electric box controls the retraction and lowering actions of the winch.

Preferably, the detection system further comprises an amplitude changing device and an amplitude changing pull rod, wherein the amplitude changing pull rod is arranged on the inner side of the suspension arm, the upper end of the amplitude changing pull rod is hinged with the body of the suspension arm, and the lower end of the amplitude changing pull rod is hinged with the amplitude changing device; the amplitude changing device is arranged on a mounting beam of the chassis frame.

Preferably, the amplitude changing device can move back and forth on the mounting beam, the inclination angle of the amplitude changing pull rod is changed, and the rock drilling hammer is controlled to move in a linear range of 1.5 m-4.5 m.

Compared with the prior art, the utility model has the beneficial effects that:

according to the system for detecting the landing of the rock drilling hammer, provided by the utility model, the down-falling of the rock drilling hammer is stopped when the rock drilling hammer falls to the seabed through pressure detection and PLC control, so that the problem that equipment is damaged due to the fact that the rock drilling hammer is empty when the down-falling height is fixed is avoided, the problem that the rock drilling hammer cannot hammer when the seabed is uneven is solved, the service life of a steel wire rope is prolonged, and the construction safety and the use efficacy are improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic diagram of circuit module connection according to the present utility model.

The marks in the figure: the device comprises a 1-PLC electric box, a 2-winch, a 3-amplitude changing device, a 4-amplitude changing pull rod, a 5-fixed pulley block, a 6-shaft pin type pressure sensor, a 7-suspension arm, an 8-steel wire rope, a 9-rock drilling hammer and a 10-guiding pulley block.

Detailed Description

The present utility model will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present utility model is limited to the following embodiments, and all techniques realized based on the present utility model are within the scope of the present utility model.

Example 1

Referring to fig. 1, the structure of the utility model comprises a PLC electric box 1, a winch 2, a luffing device 3, a luffing pull rod 4, a fixed pulley block 5, a suspension arm 7, a steel wire rope 8, a rock hammer 9 and a guide pulley block 10.

Specifically, one end of the steel wire rope 8 is connected with the winch 2, then passes through the guide pulley block 10 and the fixed pulley block 5, and the other end is connected with the rock drilling hammer 9.

The detection system comprises a shaft pin type pressure sensor 6 arranged in a fixed pulley block 5, the detection value of the shaft pin type pressure sensor 6 is received by the PLC electric box 1, and then the winding machine 2 is controlled to wind and unwind a steel wire rope 8, so that the lowering and stopping of a rock hammer 9 are controlled. When the detection value of the shaft pin type pressure sensor 6 reaches a preset threshold value, the PLC electric box 1 controls the winch 2 to stop the down of the rock hammer 9.

The utility model also comprises an amplitude changing device 3 and an amplitude changing pull rod 4, wherein the amplitude changing pull rod 4 is arranged on the inner side of the suspension arm 7, the upper end of the amplitude changing pull rod 4 is hinged with the frame body of the suspension arm 7, and the lower end of the amplitude changing pull rod is hinged with the amplitude changing device 3; the amplitude changing device (3) is arranged on a mounting beam of the chassis frame. The amplitude changing device 3 can move back and forth on the mounting beam, the inclination angle of the amplitude changing pull rod 4 is changed, and the rock hammer is controlled to move in a linear range of 1.5 m-4.5 m.

Referring to fig. 2, the pin-type pressure sensor 6 of the present utility model is connected to a PLC electronic box through a signal module. The pins 0# and 1# of the signal module are voltage output, and positive and negative excitation of the pin-type pressure sensor 6 is returned to supply power; the pins 2# and 3# of the signal module are digital signal inputs and receive detection signals of the shaft pin type pressure sensor 6; the 4# pin and the 5# pin of the signal module are analog signal output, the 4# pin outputs a low-level signal, and the 5# pin outputs a high-level signal; the 6# pin of the signal module is a power input, and the 7# pin is a ground pin.

Specifically, the analog quantity of the PLC electric box 1 is input into a V+ port, a wire inlet end is connected with a resistor in parallel, wherein an input end L is connected with a 220V fire wire, an input end N is connected with a zero wire, and an input end PE is grounded.

The working principle of the detection system is that a preset threshold value is set to be 0, the value is set to be fed back to the PLC electric box, and when the detection value of the shaft pin type pressure sensor 6 reaches the preset threshold value, the PLC electric box controls the winch to stop the lowering action of the steel wire rope. When the rock hammer is normally suspended and lowered, the pressure signal is normal, and the PLC electric box can control the winch to be lowered and retracted.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (7)

1. The utility model provides a rock drilling hammer falls to ground detecting system, includes hoist engine (2), control PLC electronic box (1) of hoist engine (2), davit (7), install fixed pulley group (5) on davit (7), direction assembly pulley (10), and rock drilling hammer (9), wherein wire rope (8) by hoist engine (2) are passed through in proper order direction assembly pulley (10) fixed pulley group (5) are connected to rock drilling hammer (9), its characterized in that, detecting system still includes install pivot formula pressure sensor (6) in fixed pulley group (5) when the detected value of pivot formula pressure sensor (6) reaches predetermined threshold value, PLC electronic box (1) is stopped the action of letting down of hoist engine (2).

2. A rock hammer fall detection system according to claim 1, characterized in that the pin pressure sensor (6) communicates with the PLC electronic box (1) using a serial port.

3. A rock drill hammer fall detection system according to claim 1, characterized in that the pin pressure sensor (6) transmits a pressure signal to a signal module, which converts the pressure signal into an analog quantity, which is transmitted to the PLC electronic box (1).

4. A rock drill hammer fall detection system according to claim 1, wherein the predetermined threshold value is 0.

5. A rock drill hammer landing detection system according to claim 1, characterized in that the PLC box (1) controls the retraction and lowering actions of the hoisting machine (2).

6. A rock hammer landing detection system as claimed in claim 1, characterized in that the detection system further comprises a luffing device (3), a luffing pull rod (4), wherein the luffing pull rod (4) is arranged on the inner side of the suspension arm (7), the upper end of the luffing pull rod is hinged with the frame body of the suspension arm (7), and the lower end of the luffing pull rod is hinged with the luffing device (3); the amplitude changing device (3) is arranged on a mounting beam of the chassis frame.

7. A system for detecting the landing of a rock drill hammer according to claim 6, characterized in that the amplitude changing device (3) can move back and forth on the mounting beam, the inclination angle of the amplitude changing pull rod (4) is changed, and the rock drill hammer is controlled to move in a linear range of 1.5-4.5 m.