Electric vibration machine for mineral material processing equipment

Abstract

A belt or chain driven mineral material processing plant vibrator, comprising: a vibrator shaft drive wheel (120) configured to be arranged at least partially in a radial direction around a bearing (102) of a vibrator shaft (104) extending through a plant frame (106) of a mineral material processing plant; and an eccentric (110) configured to be mounted to the vibrator shaft (104) such that the eccentric (110) extends beyond the vibrator shaft drive wheel (120) in an axial direction of the vibrator shaft (104) and outwardly from the equipment frame (106). Also disclosed are a method for vibrating a mineral material processing plant by means of a belt or chain (200), a method for manufacturing a belt or chain driven mineral material processing plant vibrator (300), a method for controlling a belt or chain driven mineral material processing plant vibrator (400), and a mobile mineral material processing apparatus comprising the mineral material processing equipment vibrator.

Description

Technical Field

[0001] The present disclosure relates generally to belt or chain driven mineral material processing equipment vibrators. Background Art

[0002] This section provides useful background information, but does not constitute an admission that any of the techniques described herein represent prior art.

[0003] Vibrators are used to agitate various mineral material processing equipment, such as screens, to facilitate material processing. For example, a screen vibrator is provided to agitate one or more screen media of a screen, thereby conveying oversized fractions along the screen and undersized fractions through the screen. Vibrators may also be provided to facilitate conveying of material through a feeder or along a conveyor.

[0004] The vibrator is usually driven by a rotary drive device that rotates the eccentric system, thereby generating vibrations through the inertia of the eccentric system. The eccentric system includes one or more eccentric members. It is desirable to invoke the vibrating action symmetrically about the center line of the screen machine. For example, the shaft may pass through opposite sides of the screen frame and support one or more eccentric mass blocks. The eccentric mass block may be located between the opposite sides of the screen frame. Alternatively or additionally, the eccentric mass block may sandwich the screen frame outside the screen frame. It may be advantageous to position the eccentric mass block outside the screen frame in order to reduce the space requirement within the screen machine, or to enhance the vibration force depending on the eccentricity of the mass block.

[0005] When driving the shaft that supports the eccentric mass outside the screen frame, the mass is usually supported on the shaft in close proximity to the screen frame to reduce the reaction force on the shaft bearing. In addition, the closer the eccentric is to the screen frame, the less thickness the shaft needs to have in order to obtain sufficient rigidity. Since the purpose is to vibrate the screen surface, any increase in mass in the system will counterproductively reduce the vibration acceleration. Therefore, it is reasonable to position the eccentric mass in close proximity to the screen frame and to position the drive pulley behind the eccentric. However, when the drive of the eccentric is achieved by an electric motor that is longer than the combination of the eccentric and the drive pulley, the drive system of the screen may increase the width of the screen. If the electric motor is radially offset from the horizontal plane of the drive pulley and extends axially, the motor needs to be installed to be separated from the screen frame by the axial length of the eccentric. On the other hand, if the motor is installed in the opposite direction, the tail end of the motor that obstructs the airflow into the motor may affect the cooling of the motor. The shaft needs to be extended so that the drive pulley is in line with the pulley of the motor.

[0006] New improvements or alternatives are desired to enable the manufacture of more compact or alternative drive systems for screen vibrators. Summary of the invention

[0007] The attached claims define the scope of protection. Any examples and technical descriptions of devices, products and / or methods not covered by the claims in the specification and / or drawings are not presented as embodiments of the present invention, but are presented as background technology or examples to help understand the present invention.

[0008] According to a first example aspect, there is provided a belt or chain driven vibrator for use in mineral material processing equipment, comprising:

[0009] a vibrator shaft drive wheel configured to be arranged at least partially in a radial direction around a bearing of a vibrator shaft extending through an equipment frame of the mineral material processing equipment; and

[0010] An eccentric member is configured to be mounted to the vibrator shaft such that the eccentric member extends beyond the vibrator shaft drive wheel in an axial direction of the vibrator shaft and extends outwardly from the screen frame.

[0011] The drive wheel may be a pulley for a belt or a sprocket.

[0012] The bearing may include a bearing housing. The bearing may include a plurality of rollers or balls. The vibrator shaft drive wheel may be configured to be arranged at least partially in a radial direction around the bearing housing. The vibrator shaft drive wheel may be configured to be arranged at least partially in a radial direction around the rollers or balls of the bearing.

[0013] Advantageously, by arranging the vibrator shaft drive wheel at least partially around the bearing, the vibrator shaft drive wheel and the eccentric can be brought closer to the machine frame. The eccentric load on the bearing is then reduced.

[0014] The vibrator shaft drive wheel may include two peripheral flanges defining a belt groove. The belt groove may be located axially between the screen frame and the center of mass of the eccentric. The belt groove is axially closer to the screen frame than the center of mass of the eccentric.

[0015] The vibrator may be belt driven. The belt groove may be suitable for multi-ribbed belts. The belt groove may be suitable for double-ribbed belts. The flange may extend radially from the cylindrical part. The cylindrical part may be flush with one of the peripheral flanges facing inward. The flange may be attached to the cylindrical part, for example by welding. The cylindrical part may extend outward from the outer flange of the peripheral flange by a length that is greater than the width occupied by the flange and the groove. The vibrator may also include a belt. The vibrator may include two belts. Two belts may allow the use of relatively cheap belts while retaining a narrow axial space in the direction of the vibrator axis. The vibrator may include three belts. Three belts may allow the use of more reasonably priced belts or extend the life of the belts while still keeping the total axial space within reasonable limits. The vibrator may include four belts. Taking into account the centrifugal forces caused by the eccentric, four belts may still keep the required axial space within the permissible tolerance of the vibrator bearing. If there are four belts, operation can continue even if one of the belts is damaged. The vibrator may include 1 to 4 belts. Alternatively, the vibrator may be chain driven. The vibrator may include a chain. The vibrator may alternatively include two or three chains. Advantageously, by using two or three chains, redundancy may be increased, thereby reducing the requirements for chain strength and reducing faults in manufacturing by enabling the vibrator to operate even if one of the chains is damaged.

[0016] The mineral material processing equipment may be a screen, a feeder and / or a conveyor.

[0017] The vibrator shaft drive wheel may be integrated with the eccentric. The vibrator shaft drive wheel may be attached to the eccentric. The eccentric may be recessed to at least partially accommodate the outer side of the vibrator shaft drive wheel. The eccentric may include a recess configured to radially align the vibrator shaft drive wheel with the eccentric. The recess may be semicircular. The recess may further bring the eccentric closer to the device frame.

[0018] Having the eccentric closer to the machine frame may be particularly useful for multi-ribbed belts which require a greater width than a single-ribbed belt.

[0019] The eccentric member may include a shaft attachment structure. The shaft attachment structure may include a clamp configured to attach the eccentric member to the vibrator shaft. The shaft attachment structure may also couple the vibrator shaft drive wheel to the vibrator shaft.

[0020] The eccentric member may include a semicircular plate member. The plate member may define a slot. The plate member may be integrally formed with the shaft attachment structure. The eccentric member may include an arcuate member. The arcuate member may be attached to the plate member. The arcuate member may be semicircular. The arcuate member and the plate member may be radially aligned. The arcuate member may be integrally formed with the plate member.

[0021] The eccentric may be mounted so that its centrifugal force vector is formed at the closest distance to the support point of the bearing. The closest distance may be at most 115 mm. The closest distance may be at most 110 mm. The closest distance may be at least 108 mm. The closest distance may be at least 110 mm.

[0022] The mineral material processing equipment vibrator may also include a bracket for an electric motor. The bracket may be attached to the equipment frame. The bracket may be made of sheet metal. The metal may be or include steel; aluminum; or an alloy of a plurality of different metals. The bracket may be attached to the outside of the equipment frame. The bracket may be attached to the equipment frame by bolts, rivets, or welding. The bracket may define at least a portion of a drive wheel box. The bracket may include a drive wheel tensioner. The drive wheel fastening mechanism may include a motor attachment plate. The motor attachment plate may be a slidable or rotatable connector configured to connect the motor attachment plate to an opposing structure included in the bracket. The bracket may include a belt tensioner. The belt tensioner may include a rotatable tension adjustment element. The bracket may include a chain tensioning mechanism. The chain tensioning mechanism may include a rotatable tension adjustment element. The rotatable tension adjustment element may be threaded. The opposing structure may be defined by a drive wheel box. The bracket may be configured to attach an electric motor from its front end, through which the electric motor provides rotational drive. The bracket can be configured to attach the electric motor to the device frame so that the shaft of the electric motor is spaced apart from the device frame by a motor gap. The motor gap can be at least 1 mm, 2 mm, 5 mm, or 10 mm. The motor gap can be at most 2 mm, 5 mm, 10 mm, 20 mm, or 40 mm. The motor can have a motor shaft. The motor shaft can drive the device vibrator through a belt. The motor shaft can drive the device vibrator through a chain. The motor shaft can extend axially beyond the bearing.

[0023] Mineral material processing equipment vibrators may fit within the transport width defined by other parts of the equipment.

[0024] The vibrator may also include a vibrator shaft. The belt or chain driven vibrator may also include a second eccentric. The second eccentric may be configured to be mounted to an opposite end of the vibrator shaft. The vibrator may include two eccentrics configured to operate on opposite sides of the device frame. The two eccentrics may be identical. The two eccentrics may be mounted at the same distance from the device frame. The second eccentric may be attached closer to the device frame than the first eccentric. The vibrator shaft drive wheel may be configured to drive the first eccentric by an interconnection connecting the vibrator shaft drive wheel and the first eccentric. The vibrator shaft drive wheel may be configured to drive the second eccentric through the vibrator shaft.

[0025] According to a second example aspect, there is provided a method for vibrating a mineral material processing plant by means of a belt or chain, comprising:

[0026] supporting a vibrator shaft drive wheel at least partially in a radial direction of a bearing about a vibrator shaft, the vibrator shaft extending through an equipment frame of the mineral material processing equipment;

[0027] supporting the eccentric member on the vibrator shaft so that the eccentric member extends beyond the vibrator shaft drive wheel in an axial direction of the vibrator shaft and extends outwardly from the apparatus frame; and

[0028] The eccentric is rotated by the vibrator shaft drive wheel.

[0029] The method may further include coupling the vibrator shaft drive wheel and the eccentric member such that the vibrator shaft drive wheel and the eccentric member are at least partially staggered.

[0030] According to a third example aspect, there is provided a method for manufacturing a mineral material processing equipment vibrator, the method comprising:

[0031] mounting a vibrator shaft drive wheel at least partially in a radial direction about a bearing of a vibrator shaft extending through an equipment frame of the mineral material processing equipment; and

[0032] An eccentric is mounted to the vibrator shaft such that the eccentric extends beyond the vibrator shaft drive wheel in an axial direction of the vibrator shaft and extends outwardly from the apparatus frame.

[0033] According to a fourth example aspect, there is provided a method for controlling a vibrator of a mineral material processing equipment, comprising:

[0034] measuring the speed of the vibrator or obtaining the current drive target of the vibrator; and

[0035] The driving of the vibrator is controlled based on at least one of the measured vibrator speed or the obtained current driving target of the vibrator.

[0036] The control of the drive may include adjusting the power or speed of the motor driving the vibrator. The control of the drive may include starting the motor driving the vibrator. The control of the drive may include shutting down the motor driving the vibrator.

[0037] According to a fifth example aspect, there is provided a mineral material processing plant comprising a mineral material processing plant vibrator.

[0038] According to a sixth example aspect, there is provided a screening machine comprising a (belt or chain driven) mineral material processing equipment vibrator.

[0039] According to a seventh example aspect, there is provided a mobile mineral material processing apparatus comprising a mineral material processing equipment vibrator.

[0040] The mineral material processing apparatus may be mobile. The mineral material processing apparatus may be self-propelled. The mineral material processing apparatus may be towable.

[0041] Different non-binding example aspects and implementations have been described above. The foregoing implementations are only used to explain selected aspects or steps that can be used in different implementations. Some implementations may be presented with reference to only certain example aspects. It should be understood that the corresponding implementations may also be applied to other example aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Some exemplary embodiments will be described with reference to the accompanying drawings, in which:

[0043] Figure 1a schematically illustrates, from one angle, a belt driven mineral material processing equipment vibrator according to an exemplary embodiment;

[0044] Figure 1b schematically illustrating a belt driven mineral material processing equipment vibrator according to an exemplary embodiment from another angle;

[0045] Figure 1c shows a cross section of an eccentric according to an exemplary embodiment;

[0046] Figure 2 A block diagram showing a method of vibrating a mineral material processing device by means of a belt or chain according to one embodiment;

[0047] Figure 3 A block diagram showing a method for manufacturing a belt or chain driven mineral material processing equipment vibrator according to one embodiment;

[0048] Figure 4 A block diagram showing a method for controlling a belt or chain driven mineral material processing equipment vibrator according to one embodiment; and

[0049] Figure 5 A system according to one embodiment is schematically shown. DETAILED DESCRIPTION

[0050] In the following description, the same reference numerals denote the same elements or steps. Figure 1a and 1b A belt driven mineral material processing equipment vibrator 100 is shown. Figure 1a and Figure 1b The same belt driven mineral material processing equipment vibrator is shown from two different angles. The belt driven mineral material processing equipment vibrator 100 comprises an eccentric 110 and a vibrator shaft drive wheel 120. Figure 1a and 1bIn an exemplary embodiment of the present invention, the vibrator shaft drive wheel 120 is a vibrator shaft pulley. The vibrator 100 includes a vibrator shaft 102 and a bearing 102 for rotatably supporting the vibrator shaft. The vibrator shaft 102 supports an eccentric 110 and a vibrator shaft drive wheel 120. The vibrator shaft drive wheel 120 is configured to be arranged at least partially in a radial direction around the bearing 102. The vibrator shaft 104 extends through the screen frame 106. In another embodiment (not shown), the screen vibrator is chain driven and the vibrator shaft drive wheel 120 is a sprocket.

[0051] The eccentric 110 is configured to be mounted on the vibrator shaft 104. The eccentric 110 extends in the axial direction of the vibrator shaft 104 beyond the vibrator shaft drive wheel 120 and extends outward from the screen frame 106. The center of the drive medium (belt, chain) of the vibrator shaft drive wheel 120 is configured to be closer to the screen frame 106 than the center of mass of the eccentric 110 in the axial direction of the vibrator shaft 104. The vibrator shaft drive wheel 120 is attached to the eccentric 110.

[0052] In one embodiment, the bearing 102 includes a bearing housing. In one embodiment, the vibrator shaft drive wheel 120 is configured to be arranged at least partially in a radial direction around the bearing housing.

[0053] The vibrator shaft drive wheel 120 includes a cylindrical part 122 and two peripheral flanges 124 ( Figure 1b ), a belt groove is defined between the two peripheral flanges 124. In an exemplary embodiment, the belt groove is configured to be located between the screen frame 106 and the eccentric 110. In an exemplary embodiment, the belt groove is configured to be closer to the screen frame 106 than (the mass of) the eccentric 110. In other words, the eccentric of the vibrator 100 can exceed the belt groove in the axial direction of the vibrator shaft 104 and generate vibration outward from the screen frame 106 by its overall mass.

[0054] The belt grooves are suitable for double-ribbed belts. Double-ribbed belts are relatively durable and strong, although they require more axial space than single-ribbed belts. Due to the increased axial space requirements, Figure 1a and Figure 1b The vibrator 100 shown is particularly advantageous in bringing the center of mass of the eccentric 110 closer to the bearing 102. The vibrator may alternatively include one belt. The vibrator may include two belts. The vibrator may include three belts. The vibrator may include four belts. The vibrator may include 1-4 belts. The vibrator may be chain driven. If more than one chain is used to drive the vibrator, the vibrator may include one chain or multiple chains.

[0055] The eccentric member 110 includes a semicircular plate member 112 and an arc-shaped member 114 attached or integrated together. In the exemplary embodiment, the plate member 112 defines a recess 118. Figure 1a In the embodiment, the plate member 112 is integrally formed with the shaft attachment structure. The arc member 114 is attached to the plate member 112. Figure 1a In the embodiment, the arc-shaped part 114 is semicircular and the arc-shaped part 114 and the plate part 112 are radially aligned.

[0056] Figure 1b It is also shown that the eccentric 110 defines a recess 118. For clarity, the recess is shown in FIG. Figure 1b The recess 118 is configured to align the vibrator shaft drive wheel 120 with the eccentric 110 in a radial direction. The recess 118 is semicircular. The recess further brings the eccentric 110 closer to the screen frame 106.

[0057] Figure 1c A cross section of the cylindrical portion 122 of the arcuate portion 114 of the eccentric is shown partially recessed.

[0058] In an exemplary embodiment, the eccentric 110 includes a shaft attachment structure, such as a clamp 116. The clamp 116 is configured to attach the eccentric 110 to the vibrator shaft 104. The shaft attachment structure also couples the vibrator shaft drive wheel 120 to the vibrator shaft 104.

[0059] In the exemplary embodiment, the vibrator 100 also includes a bracket 130 for the electric motor 140. The bracket 130 is attached to the outside of the screen frame 106, such as by bolts. Figure 1a In the embodiment of the present invention, bracket 130 defines a portion of the drive wheel box. An electric motor 140 is attached to bracket 130 by its front end through which the electric motor 140 provides rotational drive. Bracket 130 attaches the electric motor 140 to the screen frame 106 so that the shaft of the electric motor is separated from the screen frame 106 by a motor gap (not shown). Bracket 130 is included in Figure 1a The pulley tensioning mechanism is implemented using two pulley tensioners 132. Figure 1a In the embodiment, the pulley tensioning mechanism also includes a motor attachment plate 134. Figure 1a , the motor attachment plate 134 slidably attaches the electric motor 140 to the opposing surface provided by the bracket 130. In an exemplary embodiment, the motor attachment plate 134 includes a pivot attachment configured to pivotally attach the electric motor 140 to the opposing surface. The opposing structure can be defined by a pulley box.

[0060] In an exemplary embodiment, the carriage includes a belt tensioner. In an exemplary embodiment, the belt tensioner includes a rotatable tension adjustment element, which may be threaded. In an alternative embodiment (not shown), the carriage includes a chain tensioning mechanism. In another alternative example, the chain tensioner includes a rotatable tension adjustment element, which may be threaded.

[0061] The motor may include a motor shaft (not shown). The motor shaft may drive the eccentric 110 via a belt. The motor may alternatively drive the eccentric 110 via a chain. The motor shaft may extend beyond the bearing 102 in the axial direction.

[0062] Figure 2 A block diagram of a method 200 for vibrating a mineral material processing device by means of a belt is shown. The mineral material processing device may be a screen, a feeder or a conveyor. In an alternative embodiment, the mineral material processing device is vibrated by means of a chain. The method 200 comprises a first step 210 of supporting a vibrator shaft drive wheel at least partially in a radial direction around a bearing of a vibrator shaft, the vibrator shaft extending through a device frame of the mineral material processing device; and a second step 220 of supporting an eccentric member on the vibrator shaft such that the eccentric member extends beyond the vibrator shaft drive wheel in an axial direction of the vibrator shaft and extends outwardly from the device frame. The method 200 may comprise a step 230 of coupling the vibrator shaft drive wheel and the eccentric member such that the vibrator shaft drive wheel and the eccentric member are at least partially staggered. Finally, the method 200 comprises a step 240 of rotating the eccentric member by means of the vibrator shaft drive wheel.

[0063] Figure 3 A block diagram of a method 300 for manufacturing a belt or chain driven mineral material processing equipment vibrator is shown. The method 300 comprises a first step 310 of mounting a vibrator shaft drive wheel at least partially in a radial direction around a bearing of a vibrator shaft, the vibrator shaft extending through an equipment frame of the mineral material processing equipment. Finally, the method 300 comprises a step 320 of mounting an eccentric member on the vibrator shaft such that the eccentric member extends beyond the vibrator shaft drive wheel in an axial direction of the vibrator shaft and extends outwardly from the equipment frame.

[0064] Figure 4A block diagram of a method 400 for controlling a belt or chain driven mineral material processing equipment vibrator is shown. The method 400 comprises a first step 410 of measuring the speed of the vibrator, or alternatively a first step 411 of obtaining a current drive target for the vibrator. The method 400 comprises a second step 420 of controlling the drive of the belt or chain driven mineral material processing equipment vibrator based on at least one of the measured speeds of the vibrator, or alternatively a second step 421 of controlling the drive of the vibrator based on the obtained current drive target for the vibrator. Finally, the method 400 may comprise any one of the following steps: a step 430 of adjusting the power or speed of the motor driving the vibrator; a step 431 of starting the motor driving the vibrator; or a step 432 of shutting down the motor driving the vibrator.

[0065] Figure 5 A system according to one embodiment is shown. The system comprises a mobile mineral material processing device 500 comprising a mineral material screen 510 and a belt driven screen vibrator 100. The mineral material processing device 500 may be self-propelled. The mineral material processing device 500 may be towable. The belt driven screen vibrator 100 may vibrate the screen 510.

[0066] Without limiting the scope and interpretation of the patent claims, certain technical effects of one or more exemplary embodiments disclosed herein are listed below. A technical effect is a smaller transport width and improved space saving of a mineral material processing device, due to the fact that the vibrator shaft drive wheel is configured to be arranged at least partially in a radial direction of the bearing around the vibrator shaft. Another technical effect of some embodiments is weight reduction and a more compact design compared to prior art solutions. Another technical effect of some embodiments is a reduction in dynamic forces occurring in the bearings during operation of the mineral material processing device under vibration. Another technical effect of some embodiments is a reduction in eccentric loads on the bearings. Yet another technical effect of some embodiments is a reduction in complexity and / or manufacturing costs.

[0067] Various embodiments have been presented. It should be understood that in this document, the words include; contain; and contain are used as open-ended expressions, not exclusive.

[0068] The above description has provided a complete and informative description of the best mode currently contemplated by the inventor for implementing the present invention through non-limiting examples of specific embodiments and embodiments. However, it is clear to those skilled in the art that the present invention is not limited to the details of the embodiments given above, but can be implemented in other embodiments using equivalent means or in different combinations of embodiments without departing from the features of the present invention. In addition, some features of the exemplary embodiments disclosed above can be used advantageously without the need to use other features accordingly. Therefore, the above description should be considered as merely an illustration of the principles of the present invention, rather than a limitation of the present invention. Therefore, the scope of the present invention is only limited by the attached patent claims.

Claims

1. A vibrator (100) for use in a mineral material processing device, comprising: a vibrator shaft drive wheel (120) configured to be arranged at least partially in a radial direction around a bearing (102) of a vibrator shaft (104) extending through an equipment frame (106) of a mineral material processing equipment; and An eccentric member (110) is configured to be mounted to the vibrator shaft (104) such that the eccentric member (110) extends in an axial direction of the vibrator shaft (104) beyond the vibrator shaft drive wheel (120) and extends outwardly from the screen frame (106).

2. The vibrator (100) according to claim 1, wherein the drive wheel is a pulley for a belt or a sprocket.

3. The vibrator (100) according to any one of the preceding claims, wherein the bearing (102) comprises a bearing housing.

4. The vibrator (100) of any one of the preceding claims, wherein the eccentric (110) comprises a recess (118) configured to radially align the vibrator shaft pulley (120) with the eccentric (110).

5. The vibrator (100) according to any one of the preceding claims, wherein the vibrator shaft pulley (120) comprises a cylindrical part (122) and two peripheral flanges (124) supported by the cylindrical part (122) and configured to define a groove.

6. The vibrator (100) according to any one of the preceding claims, wherein the device is a screen, a feeder and / or a conveyor.

7. The vibrator (100) according to any one of the preceding claims, wherein the eccentric (110) comprises a semi-circular plate member (112).

8. The vibrator (100) according to any one of the preceding claims, wherein the eccentric (110) comprises an arc-shaped part (114).

9. The vibrator (100) according to any one of the preceding claims, wherein the eccentric (110) comprises a shaft attachment structure.

10. The vibrator (100) according to any one of the preceding claims, wherein the eccentric (110) is mounted so that its centrifugal force vector is formed at a closest distance to the support point of the bearing (102), the closest distance being at most 115 mm.

11. A method for vibrating mineral material processing equipment by means of a belt or chain (200), comprising: supporting a vibrator shaft drive wheel at least partially in a radial direction about a bearing of a vibrator shaft extending through an equipment frame (210) of the mineral material processing equipment; supporting the eccentric member to the vibrator shaft so that the eccentric member extends in the axial direction of the vibrator shaft beyond the vibrator shaft drive wheel to the outside of the device frame (220); and The eccentric is rotated by the vibrator shaft drive wheel (240).

12. A method for manufacturing a belt or chain driven mineral material processing equipment vibrator (300), comprising: mounting a vibrator shaft drive wheel at least partially in a radial direction about a bearing of a vibrator shaft extending through an equipment frame of a mineral material processing equipment (310); as well as An eccentric is mounted to the vibrator shaft so that the eccentric extends in the axial direction of the vibrator shaft beyond the vibrator shaft drive wheel to the outside of the screen frame (320).

13. A method for controlling a belt or chain driven screen mineral material processing equipment vibrator (400), comprising: measuring (410) the speed of the belt or chain driven screen vibrator or obtaining (411) the current drive target of the belt or chain driven screen vibrator; and performing at least one of the following: controlling (420) a drive of the belt or chain driven screen vibrator based on at least one of the measured speeds of the belt or chain driven screen vibrator; or The driving of the belt or chain driven screen vibrator is controlled (421) based on the obtained current driving target of the belt or chain driven screen vibrator.

14. Mineral material processing equipment comprising a vibrator according to any one of claims 1 to 10.

15. A mobile mineral processing device comprising a mineral material processing equipment vibrator according to any one of claims 1 to 10.

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