CN105188941B - Roll crushing device and the drive chain for roll crushing device - Google Patents

Abstract

The drive chain according to the invention for a roller crusher has at least one transmission and a motor, the motor directly drives the drive shaft of the transmission and the output shaft of the transmission directly drives the roller crusher. In the context of the present invention, direct drive means a power transmission without slip, ie without a belt drive or the like. According to the invention, the transmission is designed such that the drive shaft and the output shaft are located on the same transmission side and thus the motor and the roller crusher are also arranged on the same transmission side. It is therefore advantageous to bend the drive chain, whereby the overall length of the shredder can be significantly reduced. It is particularly preferred to arrange a cardan shaft between the motor and the transmission or between the transmission and the roller crusher. It is therefore advantageous that the motor or the breaker can be arranged offset from the transmission and that the breaker can also be made smaller. Furthermore, it is advantageous that the outlay for aligning the motor shaft or the shaft of the crushing roller with the corresponding drive shaft is eliminated.

Description

Roller crushers and drive chains for roller crushers

technical field

The invention relates to a drive chain for a roller crusher and to a roller crusher with a drive chain of this type, wherein the crusher can be used in mining as a pulverizer for minerals.

Background technique

Different types of roll crushers belonging to the group of screens are known. They differ between the number of rollers and the type of drive for the rollers. Twin roll crushers with two crushing rolls are often used. Twin roll crushers have a single-sided drive (ie only one roll is driven) or a double-sided drive. By synchronizing the two breaker shafts, it is possible to drive both breaker shafts with a single-sided drive. In the drive chain, there is usually a transmission mechanism between the motor and the crusher. Such a breaker is eg disclosed in WO 2010/032037A. In addition to the large installation space required for such a breaker, the high complexity for aligning the drive chain is also disadvantageous.

Direct drives are particularly frequently used for pulverizers in mining. Direct drive here means that the drive force is transmitted via a shaft and possibly also a transmission or clutch. Furthermore, roller crushers are known in which the motor is arranged axially parallel to the crushing roller next to the crusher and the force transmission to the crushing roller takes place by means of a belt drive. Furthermore, in this embodiment variant, the axis of one of the crushing rollers is configured to be displaceable parallel to the direction of the axis, whereby overload protection and the adjustability of the crushing gap are ensured. An example of a crusher of this type is disclosed in the product description "C800 series hybrid (C800 series hybrid system)" of the company Sandvik in 2010. A disadvantage is that due to the slip produced by the belt drive, which cannot achieve a defined meshing angle of the two crushing rollers with one another, and also that a continuous grain size cannot be ensured due to the increase in the crushing gap in the event of overload. Furthermore, due to the large pulleys, belt drives require high safety expenditure, must be protected against flying mineral fragments and are also expensive to maintain.

Contents of the invention

It is therefore the object of the present invention to provide a drive chain for a roller crusher which enables a compact design of the roller crusher. Furthermore, the breaker should be simple to construct and easy to assemble.

The drive chain according to the invention for a roller crusher has at least one gear and a motor, wherein the motor directly drives the drive shaft of the gear and the output shaft of the gear directly drives the roller crusher. In the context of the present invention, direct drive means a power transmission without slip, ie without a belt drive or the like. According to the invention, the transmission is designed in such a way that the drive shaft and the output shaft are located on the same transmission side, and thus the motor and the roller crusher are also arranged on the same transmission side. It is therefore advantageous to bend the drive chain, whereby the overall length of the breaker can be significantly reduced.

Rather, it is particularly preferred that a cardan shaft is arranged between the motor and the transmission or between the transmission and the roller crusher. By using a cardan shaft, the motor or the breaker can advantageously be arranged offset relative to the transmission, and thus the breaker can be made smaller. Furthermore, it is advantageous that the effort for aligning the motor shaft or the shaft of the crushing roller with the corresponding gear shaft is eliminated.

Furthermore, it is preferred that a clutch, in particular a hydrodynamic clutch, is arranged between the motor and the transmission. Advantageously, therefore, the motor can build up a first rotational speed and torque at start-up, before establishing a connection with the crushing roller.

Particularly preferably, an intermediate shaft is also arranged between the hydrodynamic clutch and the cardan shaft. The intermediate shaft is preferably supported on the motor base, the base frame or on the breaker housing. As a result, the motor shaft is partially unloaded and does not have to absorb the forces generated by the action of the cardan shaft. The hydrodynamic clutch is thus advantageously supported on the countershaft and the motor bearing.

Furthermore, it is preferred that a clutch, in particular a safety clutch, is likewise arranged between the cardan shaft and the transmission. The clutch releases in the event of an overload and thus advantageously forms an overload protection for the crusher.

Furthermore, it is advantageous if a brake is provided which brakes or blocks the drive chain during actuation. Thus, it can advantageously be ensured that movement of the crushing rollers can be excluded in the crusher during operation. For example, there is a fear that the crushing rollers will rotate due to the change of the center of gravity of the rollers when the crushing tool is removed. For example, the brake can be a disc brake mounted on the transmission or arranged at another point of the drive chain.

The roller crusher according to the invention has at least two crushing rollers, at least one of which is driven by the drive chain according to the invention described above. It is therefore advantageous that the roller crusher can be designed significantly more compact by arranging the motor/motors next to the roller crusher housing.

Particularly preferably, the roller crusher has two crushing rollers which are each driven via a drive chain. In this configuration, both motors are arranged directly next to the housing of the roller crusher. In order to ensure a constant meshing angle of the two crushing rollers with respect to each other, the crushing rollers can also be connected via a synchronizing wheel. In this case, the synchronous wheel is arranged, for example, on the non-driven side of the crushing roller near the bearing in the housing wall of the roller crusher.

In an alternative embodiment, the roller crusher has two crushing rollers, which are connected via a synchronizing wheel, wherein only one crushing roller is driven by a drive chain. The transmission of the drive torque for the second crushing roller then takes place via the synchronous pulley.

The selection of the specific design of the roller crusher (ie alternatively: one or two drive chains or with or without synchronizing device) depends on the requirements of the specific crusher.

Particularly preferably, one or more motors are fastened to the housing of the roller crusher. Furthermore, preferably, one or more transmissions can also be fastened to the housing of the roller crusher. Therefore, it is advantageous to dispense with the use of a base platform, which is very strong due to the large weight and mechanical requirements of the structural components to be arranged and therefore must be implemented cost-intensively, and instead uses very Robustly implemented breaker housing. Advantageously, therefore, the weight of the roller crusher can also be significantly reduced.

Alternatively, the roller crusher, motor and transmission can be arranged on a common base frame. Here, the transmission is preferably displaced in an articulated manner, so that no forcing forces act on the base frame. It is therefore advantageous that the base frame no longer has to be constructed so rigidly, which reduces costs.

Description of drawings

Hereinafter, embodiments of the present invention will be described in conjunction with the accompanying drawings. in:

Figure 1 shows a roller crusher according to the invention with two crushing rollers and two drive chains according to the invention;

Figure 2 shows a detailed view of the drive chain according to the invention; and

Figure 3 shows a top view of the drive chain.

Detailed ways

Figure 1 shows a roller crusher with two drive chains according to the invention. The roller crusher has two crushing rollers 3 which are arranged in a housing 2 . Arranged on the side of the housing 2 perpendicular to the crushing roller 3 are two transmissions 4 , the output shafts of which are arranged coaxially with the crushing roller 3 and are connected to the crushing roller.

The drive shaft is arranged on the same side of the transmission 4 as the output shaft, but further outside, so that the axis of the shaft is shown next to the roller crusher housing 2 . Furthermore, next to the housing 2 two motors 6 are arranged as far as possible axially parallel to the crushing roller 3 , which are each driven via a cardan shaft 8 of one of the transmissions 4 . A hydraulic clutch 7 is also connected between the cardan shaft 8 and the motor 6 respectively. The hydraulic clutch significantly improves the start-up behavior in the case of overfilled roll crushers. Articulations 9 are present at both ends of the cardan shaft 8 .

Figure 2 shows a detailed view of the drive train according to the invention. The motor 6 is connected to the cardan shaft 8 via a hydraulic clutch 7, wherein a safety clutch 11 is arranged between the cardan shaft 8 and the transmission mechanism for overload protection. A synchronous wheel 10 is fastened to the end of the crushing roller 3 facing away from the drive mechanism 4 . The transmission mechanism 4 is arranged on the transmission mechanism base 41 , and the motor 6 is arranged on the motor base 61 .

Furthermore, a brake 5 , which is designed as a disk brake, is arranged between one of the motors 6 and one of the hydrodynamic clutches 7 . Since the two crushing rollers 3 are synchronized via a synchronizing wheel (not visible in FIG. 1 ), it is possible to lock the entire system with only one brake 5 in the drive chain.

FIG. 3 shows the drive chain in plan view. A lateral offset between the drive shaft of the transmission 4 and the shaft of the motor 6 can be seen, which is compensated by the cardan shaft 8 .

The motor 6 has a power of 560 kW at a voltage of 6 kV and operates at a rated speed of 1500 rpm and a torque of 3.6 kNm. The transmission 4 is designed as a three-stage spur gear cartridge. The crushing roller 3 has a diameter of approximately 1.8 m and a length of 2.6 m.

List of reference signs

1 Basic frame

2 housing

3 crushing rollers

4 transmission mechanism

41 Transmission base

5 brakes

6 motors

61 Motor base

7 hydraulic clutch

8 cardan shaft

9 hinges

10 synchronous wheel

11 safety clutch

Claims (9)

1. a kind of drive chain for roll crushing device, the drive chain has at least one transmission mechanism and motor, wherein, institute The drive shaft that motor directly drives the transmission mechanism is stated, and the output shaft of the transmission mechanism directly drives the roll-type and breaks Millstone, it is characterised in that the transmission mechanism is designed to make drive shaft and output shaft be arranged on identical transmission mechanism side, And motor and roll crushing device also is disposed on identical transmission mechanism side, wherein, motor and transmission mechanism it Between be disposed with universal shaft, and not only between universal shaft and motor, but also be disposed between universal shaft and transmission mechanism Clutch, and supported jackshaft is disposed between the clutch and the universal shaft of motor-side, and wherein, motor Axis is abreast arranged in beside the broken roller of the roll crushing device as far as possible.

2. drive chain according to claim 1, it is characterised in that be provided with brake, the brake is made in operation Move the drive chain.

3. a kind of roll crushing device, the roll crushing utensil has at least two broken rollers, wherein, at least one broken roller By being driven according to the drive chain any one of claim 1 and 2.

4. roll crushing device according to claim 3, it is characterised in that the roll crushing utensil has two breaker rolls Son, described two broken rollers are respectively driven by a drive chain.

5. roll crushing device according to claim 4, it is characterised in that the broken roller is connected by synchronizing wheel.

6. roll crushing device according to claim 3, it is characterised in that the destroyer has two broken rollers, institute State broken roller to connect by synchronizing wheel, and only one crushes roller by drive chain to drive.

7. the roll crushing device according to any one of claim 3 to 6, it is characterised in that one or more motor fastenings On the housing of the roll crushing device.

8. the roll crushing device according to any one of claim 3 to 6, it is characterised in that the transmission mechanism is fastened on On the housing of the roll crushing device.

9. the roll crushing device according to any one of claim 3 to 6, it is characterised in that destroyer, motor and driver Structure is arranged on common basic framework.