WO2018188431A1

WO2018188431A1 - Cable reel of excavator

Info

Publication number: WO2018188431A1
Application number: PCT/CN2018/078043
Authority: WO
Inventors: 柴庆领; 赵强
Original assignee: 沧州华海风电设备科技技术开发有限公司
Priority date: 2017-04-15
Filing date: 2018-03-05
Publication date: 2018-10-18
Also published as: CN107010493A

Abstract

A cable reel of an excavator, comprising a support (1) and a reel assembly (2). The reel assembly is installed on the lower side of a heading machine by means of the support. The cable reel of the excavator is structurally characterized in that the support is provided thereon with a speed reducer (3) and a cable device assembly (4); the speed reducer is connected to the reel assembly, and the reel assembly is connected to the cable device assembly; the cable device assembly comprises a cable device speed reducer (5) and a cable device unit (6); a transmission chain wheel is provided at the output end of the cable device speed reducer and is connected to the reel assembly by means of a first chain (8); the first chain is provided thereon with a shifting fork (7), and the cable device unit is driven to carry out reciprocating motion by means of the shifting fork. The cable reel of the excavator has a reasonable design and simple structure, wherein cable abrasions may be effectively prevented and movement of the cable may be facilitated, so that the service life of the cable is prolonged, and the work efficiency of the heading machine is increased.

Description

Excavator cable reel

Technical field

The invention belongs to the field of roadheader equipment, and particularly relates to an excavator cable drum.

Background technique

Cable reels are cable winding devices that provide power, control, or control signals for large mobile devices. It is widely used in port cranes, container cranes, ship loaders, tower cranes and other heavy machinery. Cable reels are mainly used in roadheaders, which are machines used to cut straight underground roadways. The roadheader is divided into an open tunneling machine and a shield tunneling machine. Prices generally range from 2 million to 8 million yuan. It is mainly composed of a walking mechanism, a working organization, a shipping organization and a reloading mechanism. As the travel mechanism moves forward, the cutting head in the working mechanism continually breaks the rock and transports the broken rock away. It has the advantages of safety, high efficiency and good quality of the roadway, but it has a large cost, complicated structure and large loss.

At present, China has become the world's largest roadhead manufacturing base and application market. With the rapid growth of domestic urban road traffic, railways, highways, water conservancy, municipal engineering and other construction projects, China's tunneling machinery has also ushered in rapid development. China's tunneling machinery industry has become a key support development industry in China's high-end equipment manufacturing industry and strategic emerging industries.

Moreover, due to the large power demand of the roadheader, the existing roadheader mostly adopts a fuel-type power mechanism, which consumes a large amount of energy and has serious environmental pollution. At present, China has begun to use an electric roadheader, and the electric roadheader needs to be very The long cable can guarantee its working range. The long-distance cable movement requires a lot of manpower, and it is very inconvenient, the work efficiency is very low, and it is easy to damage the cable and the working environment is dangerous. Therefore, a kind of cable is provided. A cable reel that can prevent cable damage and facilitate cable movement has become an urgent problem to be solved.

Summary of the invention

In order to solve the above technical problems, the present invention provides a cable drum for a roadheader which is capable of preventing cable wear and which is convenient for cable movement and has high work efficiency.

In order to achieve the above object, the technical solution adopted by the present invention is an excavator cable reel comprising a bracket and a reel assembly, and the reel assembly is mounted on the boring machine through the bracket, and the structural point is that the bracket is provided The reducer and the cable assembly are connected, the reducer is connected with the reel assembly, the reel assembly is connected with the cable reel, and the cable assembly comprises a cable reducer and a cable assembly, and the cable reducer The output end of the machine is provided with a transmission sprocket, and the transmission sprocket is connected with the reel assembly through the first chain, the first chain is provided with a fork, and the reel is driven by the fork to drive the cable assembly.

As a preferred embodiment of the present invention, the reel assembly is connected to a sealed box body, and a current collector is disposed in the sealed box body, and the cable current is transmitted to the roadheader through the current collector.

As a preferred embodiment of the invention, the output shaft of the reducer is mounted with a small sprocket.

As a preferred embodiment of the present invention, the reel assembly is provided with a large sprocket and a secondary sprocket. The large sprocket is connected to the small sprocket on the reducer through the second chain, and the secondary sprocket is decelerated by the first chain and the cable arranger. Machine connection.

As a preferred embodiment of the invention, a motor is mounted on the reducer.

As a preferred solution of the present invention, the bracket is provided with a bottom alarm assembly, and the bottom alarm assembly is linearly connected with the spool assembly.

As a preferred embodiment of the present invention, the mopping alarm assembly includes an alarm light capable of displaying a red light and a yellow light, the alarm light is connected with a chain break alarm device, and the chain break alarm device is disposed under the first chain and the second chain.

As a preferred embodiment of the present invention, the bobbin is provided with a reel cover which is disposed above the reel assembly.

As a preferred embodiment of the invention, a cable entry port is provided on the cable organizer assembly.

As a preferred embodiment of the present invention, a retaining wheel is provided on the bracket at the position of the spool assembly to prevent the cable from falling into the gap between the spool and the bracket.

The invention has the advantages of reasonable design, simple structure, effective prevention of cable line wear, convenient movement of the cable line, thereby improving the service life of the cable line and improving the working efficiency of the roadheader.

DRAWINGS

Figure 1 is a schematic front view of the present invention;

Figure 2 is a schematic left side view of the present invention;

Among them, 1-bracket, 2-roller assembly, 3-reducer, 4-wire assembly, 5-wire reducer, 6-wire assembly, 7-pull, 8-first Chain, 9-second chain, 10-large sprocket, 11-sub-sprocket, 12-motor, 13-bottom alarm assembly, 14-roll protection cover, 15-sealed enclosure, 16-alarm light, 17 - Chain break alarm device, 18-wheel.

detailed description

The invention will be further explained below with reference to the accompanying drawings, but without limiting the scope of the invention.

An excavator cable reel includes a bracket 1 and a reel assembly 2, and the reel assembly 2 is mounted on the boring machine through the bracket 1, and the bracket 1 is provided with a reducer 3 and a cable arranging assembly 4, the reducer 3 is connected with the reel assembly 2, the reel assembly 2 is connected with the cable assembly 4, the cable assembly 4 includes the cable reducer 5 and the cable assembly 6, the cable arranger The output end of the reducer 5 is provided with a drive sprocket, and the drive sprocket is connected to the reel assembly 2 through the first chain 8, the first chain is provided with a fork 7, and the wire arranging device 6 is driven by the fork 7. For reciprocating motion, the thread pitch can be changed by changing the gear ratio of the sprocket.

The reel assembly 2 is connected with a sealed box 15, a collector is disposed in the sealed box 15, and the cable current is transmitted to the boring machine through the collector.

The current collector is composed of a brush holder, a brush, a compression spring, a high voltage insulator, a collector ring and the like.

The collector ring is composed of 5 copper ring rings, which are fixed by high-voltage insulators. The two ends of the collector ring are supported by bearings. The axis of the main shaft of the collector ring is concentric with the axis of the reel. The collector ring has The reel rotates and the reeling line of the reel passes through the main shaft to the loop, and the line of the excavator is connected to the brush holder.

The tail of the brush holder is fixed on the bracket 1 , the bracket 1 is fixed on the box body, the brush is mounted on the brush holder, the compression spring is fixed on the brush holder, and the pressure is applied to the brush to make the brush and the ring ring tightly contact. To ensure normal conduction.

The output shaft of the reducer 3 is mounted with a small sprocket.

The reel assembly 2 is provided with a large sprocket 10 and a secondary sprocket 11 . The large sprocket 10 is connected to the small sprocket on the reducer 3 via the second chain 9 , and the secondary sprocket 11 passes through the first chain 8 . Connected to the cable reducer 5.

The motor 12 is mounted on the speed reducer 3 described above.

The bracket 1 is provided with a bottom alarm assembly 13, and the bottom alarm assembly 13 is linearly connected with the spool assembly 2.

The mopping alarm component includes an alarm lamp 16 capable of displaying a red light and a yellow light. The alarm light is connected with a chain break alarm device 17, and the chain break alarm device 17 is disposed under the first chain and the second chain. When the chain breaks The warning light 16 will display a red light, and the warning light 16 will display a yellow light when the bottom is clicked.

The bracket is provided with a reel protection cover 14 which is disposed above the reel assembly 2.

The cable arranging unit 6 is provided with a cable inlet.

The bracket 1 is located at the position of the reel assembly 2 and is provided with a retaining wheel 18 capable of preventing the cable from falling into the gap between the reel assembly 2 and the bracket 1.

Because the roadheader is mainly used in projects such as larger buildings, its moving range is large, and because of the large power required, the cable used requires a cable with a large diameter, a large weight, and a large number of cores. Because the cable line is heavier, the traction force required for the cable is relatively large. Therefore, the hydraulic motor is used as the power source in the present invention, and the hydraulic motor is divided into gear type, blade type and column according to the structure type. Plug and other types. According to the rated speed of the hydraulic motor, it is divided into two categories: high speed and low speed. A high-speed hydraulic motor with a rated speed higher than 500r/min is a low-speed hydraulic motor with a rated speed lower than 500r/min. The basic types of high-speed hydraulic motors are gear, screw, vane and axial piston. Their main features are high speed, low moment of inertia, easy start and brake, and high sensitivity for adjustment (speed regulation and commutation). Usually high-speed hydraulic motor output torque is not large, so it is also called high-speed small torque hydraulic motor. The basic type of low-speed hydraulic motor is radial piston type. In addition, there are low-speed structure types in axial piston type, vane type and gear type. The main features of low-speed hydraulic motor are large displacement, large volume and low rotation speed (sometimes It can reach several revolutions per minute or even a few revolutions, so it can be directly connected with the working mechanism; no deceleration device is needed, which greatly simplifies the transmission mechanism. Usually, the output torque of the low-speed hydraulic motor is large, so it is also called low speed and large torque. Hydraulic motor.

The blade type motor, due to the action of the pressure oil, causes the rotor to generate torque due to the unbalanced force. The output torque of the vane type hydraulic motor is related to the displacement of the hydraulic motor and the pressure difference between the inlet and outlet of the hydraulic motor, and the rotational speed is determined by the flow rate of the input hydraulic motor. Since the hydraulic motor generally requires positive and negative reversal, the blades of the vane hydraulic motor are placed radially. In order to make the root of the blade always have pressure oil, a check valve should be arranged on the passage of the back and pressure oil passage to the root of the blade. In order to ensure that the blade type hydraulic motor can start normally after the pressure oil is passed, the top of the blade must be The inner surface of the stator is in intimate contact to ensure a good seal, so a preloaded spring should be placed at the root of the blade. The blade type hydraulic motor has small volume, small moment of inertia and sensitive action, and can be applied to occasions with high commutation frequency; however, the leakage amount is large and unstable at low speed. Therefore, the blade type hydraulic motor is generally used in applications where the rotation speed is high, the torque is small, and the action requirements are sensitive.

In order to adapt to the requirements of forward and reverse rotation, the gear motor has the same inlet and outlet ports, has symmetry, and has a separate external oil drain port, which leads the leakage oil of the bearing part out of the housing; in order to reduce the starting friction torque, a rolling bearing is adopted; Moment pulsation, gear hydraulic motor has more teeth than the pump.

The gear hydraulic motor has poor dry sealing performance, low renting efficiency, and the input oil pressure cannot be too high, and cannot generate large torque. And the instantaneous speed and torque change with the position of the meshing point, so the gear hydraulic motor is only suitable for high speed and small torque. Generally used in construction machinery, agricultural machinery and mechanical equipment that does not require high torque uniformity.

High-speed motors, motors with rated speeds higher than 500r/min are high-speed motors. The basic forms of high speed motors are gear, vane and axial piston. Their main features are high speed, small moment of inertia, easy to start, brake, speed and commutation.

Low-speed motors, hydraulic motors with speeds below 500 r/min are low-speed hydraulic motors. Its basic form is a radial plunger. The main features of the low-speed hydraulic motor are: large displacement, large volume, low speed, which can be directly connected with the working mechanism, no need for a reduction gear, which greatly simplifies the transmission mechanism. The output torque of the low-speed hydraulic motor is large, up to several thousand. Tens of thousands of Nm, so it is also known as low-speed high-torque hydraulic motor.

Radial piston type hydraulic motor: working principle, when the pressure oil enters the bottom of the plunger in the cylinder through the window of the fixed oil distribution shaft 4, the plunger protrudes outwardly and tightly against the inner wall of the stator due to the stator There is an eccentricity from the cylinder. At the point where the plunger is in contact with the stator, the reaction of the stator to the plunger is. The force can be broken down into two components. When the oil pressure acting on the bottom of the plunger is p, the plunger diameter is d, and the angle between the force and the force is X, the force generates a torque to the cylinder to rotate the cylinder. The cylinder body is further outputted by the end face of the drive shaft to output torque and speed.

In the case where the plunger of the above analysis generates torque, since a plurality of plungers act on the pressure oil zone, the torque generated on these plungers causes the cylinder to rotate and output torque. Radial piston hydraulic motors are often used in low speed and high torque situations.

The radial piston hydraulic motor is further divided into:

1. Single acting connecting rod type radial piston motor

The connecting rod motor diagram, the shaft distribution hydraulic motor diagram, and the five-corner radial motor assembly animation show the working principle diagram of the single-acting rod type radial piston motor. The shape is a pentagonal star shape, and the shell, the crankshaft and the distribution shaft Components such as connecting rods, plungers, and eccentric wheels.

Advantages: Simple structure and reliable operation.

Disadvantages: large volume, heavy weight, twisting and pulsating, low speed stability is poor.

2. Multi-function inner curve plunger motor

The motor is composed of a distribution shaft, a cylinder block, a plunger, a beam, a roller, a stator, and an output shaft. This motor has a displacement that is doubled compared to a single-stroke motor. Equivalent to 21 plungers. As the number of equivalent plungers increases, the output torque increases correspondingly at the same working pressure, and the torque ripple rate decreases. Sometimes such a motor is made into a plurality of rows of plungers, the number of plungers is larger, the output torque is further increased, and the torque ripple rate is further reduced. Therefore, the motor can be made to have a large displacement and can be smoothly operated at a low rotational speed. Since the motor requires bidirectional rotation, the vane slots are arranged radially.

3. Plunger type high speed hydraulic motor

Plunger type high speed hydraulic motors are generally axial.

In addition to the valve type distribution, the axial piston pump can be used as a hydraulic motor in principle, that is, the axial piston pump and the axial piston motor are reversible. The working principle of the axial piston motor is that the oil distribution plate and the swash plate are fixed, and the motor shaft is rotated together with the cylinder body. When the pressure oil enters the plunger hole of the cylinder through the window of the oil distribution plate, the plunger protrudes under the action of the pressure oil, and is close to the swash plate, and the swash plate generates a normal reaction force p to the plunger, and the force can be decomposed It is the axial component and the vertical component Q. Q is balanced with the hydraulic pressure on the plunger, and Q causes the plunger to generate a torque to the center of the cylinder, which drives the motor shaft to rotate counterclockwise. The instantaneous total torque produced by the axial piston motor is pulsating. If the motor pressure oil input direction is changed, the motor shaft rotates clockwise. The change in the inclination angle a of the swash plate, that is, the change in displacement, affects not only the torque of the motor but also its rotational speed and steering. The greater the inclination of the swashplate, the greater the torque generated and the lower the rotational speed.

Through the above comparison, the present invention employs a low speed high torque hydraulic motor as the power source of the present invention, but in the technical solution of the present invention, the classification selection of the hydraulic motor is not limited.

The structure of the current collector in the invention adopts the latest structure of the HH patent, and is suitable for the condition that the reel is in strong vibration, and has the advantages of good electrical conductivity.

Moreover, the current collector is sealed in the box body and has good sealing property, and can ensure the normal operation of the reel under various conditions.

Since the current collector works in a confined space, the general conductor cannot work normally in this state due to insufficient oxygen. The conductor of the reel uses an aviation process, and can work normally in this state, and the life is greatly increased. improve

It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of the equivalents are included in the invention, and any reference signs in the claims should not be construed as limiting the claims.

In addition, it should be understood that although the description is described in terms of embodiments, not every embodiment includes only one independent technical solution. The description of the specification is merely for the sake of clarity, and those skilled in the art should regard the specification as a whole. The technical solutions in the respective embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

Claims

An excavator cable reel includes a bracket and a reel assembly, and the reel assembly is mounted on the boring machine through a bracket, wherein the bracket is provided with a reducer and a cable arranging assembly, and is decelerated The machine is connected with the reel assembly, the reel assembly is connected with a cable arranger, the cable arranging assembly comprises a cable reamer reducer and a cable arranging device, and the output end of the cable reamer is provided with a driving sprocket. The drive sprocket is connected to the reel assembly through a first chain, the first chain is provided with a fork, and the reel is driven by the fork to drive the cable assembly.
The excavator cable reel according to claim 1, wherein the reel assembly is connected with a sealed box body, and a collector is provided in the sealed box body, and the cable current is transmitted to the collector through the current collector. Roadheader.
[Correct according to Rule 26 21.03.2018]
The excavator cable reel according to claim 1, wherein said reducer output shaft is mounted with a small sprocket.
[Correct according to Rule 26 21.03.2018]
The excavator cable reel according to claim 1, wherein said reel assembly is provided with a large sprocket and a secondary sprocket, and the large sprocket passes through the second chain and a small chain on the reducer. The wheel is connected, and the secondary sprocket is connected to the cable reducer through the first chain.
[Correct according to Rule 26 21.03.2018]
A drum cable for an excavator according to claim 1, wherein said reducer is mounted with a motor.
[Correct according to Rule 26 21.03.2018]
The excavator cable reel according to claim 1, wherein the bracket is provided with a bottom alarm assembly, and the bottom alarm assembly is linearly connected with the reel assembly.
[Correct according to Rule 26 21.03.2018]
The excavator cable reel according to claim 5, wherein the mopping alarm assembly comprises an alarm light capable of displaying a red light and a yellow light, and the alarm light is connected with a chain breaking alarm device, and the chain break alarm The device is disposed below the first chain and the second chain.
[Correct according to Rule 26 21.03.2018]
The excavator cable reel according to claim 1, wherein the bracket is provided with a reel protection cover, and the reel protection cover is disposed above the reel assembly.
[Correct according to Rule 26 21.03.2018]
The excavator cable reel according to claim 1, wherein the cable arranging unit is provided with a cable inlet.
[Correct according to Rule 26 21.03.2018]
The excavator cable reel according to claim 1, wherein said bracket is located at a position of the reel assembly and is provided with a retaining wheel capable of preventing a cable from falling into a gap between the reel and the bracket.