conveyor machine

Abstract

The invention relates to a conveyor machine with a steeply rising support (1), on which a chain (51-55) fastened as the forward and return strands (2) is displaced with buckets (50), on which the chain wheel (4) is attached at the loading point, the chain wheel 3 at the discharge point and a chain wheel (5) at each intermediate stage. Such a conveyor system has several advantages. I'd like to mention a few of them: 1. Due to the series connection, the conveyor has only one loading and unloading process and therefore a much higher efficiency, since there is no friction between the material being conveyed and the conveying element (vane pumps, centrifugal pumps, Archimedes screws, etc.). 2. The conveying direction can be reversed by making minor changes to the discharge unit (5) and the feed unit (4). 3. This feature also allows the hoisting machine to be used in storage power plants. It's not always necessary to pump water up and down (using pumped storage). (A storage power plant always requires a hoisting system.)

Description

The invention relates to a conveyor machine with 2 chain strands, to which are attached at a certain distance buckets Mu(o)lts for material transport, which are driven in all the steps of expansion.In the art, the term bucket is used, but strictly speaking this is not quite correct, since buckets are round bodies, the conveying elements used resemble troughs, troughs, moles or moles (old high-deutsch mu(o)ltene).The conveying machines are intended to be used in quarries and here to replace the conveying of the material with dump trucks.The delivery head can be 300 m, -400 m or more, since the delivery head of the steep conveyor machine is connected in series with drives in several stages. The advantage of a series connection is that the buckets (moles) need only be filled or discharged once. There is also no need for an additional delivery height which would be necessary in the case of a parallel connection.The conveying capacity is on average 2250 tons / hour. The performance can easily be increased to 4500 t / h for 2-bucket webs.The conveyor machine is designed with 2 chains per conveyor line. The buckets (moles) are displaced on the chains. The chains are endless and thus form a front strand and a rear strand. The material is conveyed upward in the forward strand and discharged upward.Chains have the technical property that they cannot transmit any compressive forces; only tensile forces can be transmitted. On the basis of this property, the chains of the steep conveyor are prestressed, as a result of which a plurality of teeth are used on the gearwheels and the chains run much more stably. The prestressing is realized by smaller sprockets.In the course of the height, a plurality of sprockets with drives are installed, the conveying height is divided into a plurality of stages, and the conveying machine is thus connected in seriesFrom the load case, the chain force has its own weight on both the front strand and the rear strand at the upper suspension [max. kN] and at the lower suspension [0 kN]. The load on the sprocket wheel between the front run and the rear run balances, the torque (the kinetic work) is [0 kNm].The chain force from the load case payload (material) only has its maximum [max. kN] on the front run on the upper suspension, its minimum [0 kN] on the lower suspension and is guided by the loading of the buckets. At the upper suspension, the torque (kinetic work) has its maximum and must be driven by a drive at each sprocket and decelerated with a brake at standstill in order to relieve the drive.The chain force is of equal magnitude over the entire chain course from the load case of prestressing.The chain tension force from the load case of filling the buckets (moles) (also called cutting force) is applied solely by the lower drive.The operation of the conveyor machine results in friction on the chain guides. The friction torque (friction work) must be absorbed at each stage by the drive.The sprockets are clamped on a shaft by splines and are displaced on their own structure.The transmission with brake and drive motor are connected to the shaft and displaced on its own construction.The buckets (moles) are shifted on the chain such that the upper loads balance with the lower loads in amount. The first loaded bucket in the chain or the buckets which are not loaded uniformly cannot be equalized.When the empty machine is started, the frictional torque (frictional work) is applied from the lower drive alone.The invention is explained further below with reference to exemplary embodiments and the appended figures (sketches, drawings) relating to these exemplary embodiments. The following are shown: FIGS. 1 to 40 are illustrations for explaining the invention, FIG. 41 shows an example of the arrangement of the sprockets, FIG. 42 shows an example of a possible arrangement of the frame structure in the individual stages when circular conveying shafts are used, FIG. 43 shows an example of a possible arrangement of the frame construction in the individual stages when semicircular conveying shafts are used, FIG. 44 shows an example of a possible arrangement of the frame structures in the height direction of the individual stages when circular conveying shafts are used,If, according to FIG. 1, the conveyor machine is divided into a plurality of stages, both a front run and a rear run are present and one chain wheel with drive per stage, the chain force is distributed to the individual stages. This has the advantage that any desired conveying heights can be achieved.The curve The chain force is graphically shown in FIG. 2 for the load case of dead weight. At the loading station 6 and unloading station 7, the chain force 13 is established in the front strand and in the rear strand; at the intermediate stations, the chain force 14 is established (as before). FIG. 2A shows the construction of FIG. 1 with only the installation of the positions. FIGS. 3A and 4 show the normal force profile [N] in the chain without the pos. FIG. 2C shows the arrangement of the pos. In the example of FIG. 5, the normal force profile [N] is established in the chain, as illustrated in FIG. 2.FIG. 3 shows the load case of the own weight in the view.In FIG. 4, the chain force for the load cases becomes: self-weight Pos. 13 and 14, payload (material) Pos. 15 and 16 in the buckets (molders), bias voltage Pos. 59 and acceleration Pos. 56 is graphically depicted.The loading of the individual buckets (moles) is indicated in FIG. 5 in the lower stage, at the discharge Pos. In FIG. 7, the additional chain force Pos arises. 16.Figure 5A shows the system with the pos. 3, 4, 5, 16 and 17. pos. In the embodiment of FIG. 17, the entire drive torque for the load case comprises payload material conveying. If the entire drive torque is transferred into a drive, the drive torque must be applied to the highest point of the conveying system; in this case, it is the pos. FIG. 5B shows the normal force profile of the chain when the drive torque 17 is in the pos. 3 is to be mounted.FIG. 5C shows the drive torque divided into the pos. 17A, 17B and 17C. The moment 17A for filling the buckets (moles) is put into the pos. In this case, the moment for lifting the payload material Pos is arranged in FIG. 4. 17B is placed in the pos per stage. 5 and the moment from the last stage including throw-off Pos. 17C is placed in the Pos. 5 DEG C. Only by dividing the moment Pos. As shown in FIG. 5C, the normal force profile is established in the chain according to FIG. 5.FIG. 6 shows the height dimension Pos. 12 of the individual stages and the loading force (cutting force) for loading the buckets (moles) which is applied solely by the lower drive.In FIG. 7, the work (moment) Pos. 18 and 19 for the load case friction at the guide elements in the pos. These are illustrated in FIGS. 20 and 21.FIG. 8 shows in Pos, 22 and 25 the displacement of the buckets (molders) and the consequent load transfer. When the upper displacement and the lower displacement of the preceding bucket (mold) are combined into one point and the molds are loaded uniformly, the guide loads Pos neutralize each other. 23 and 24.In the region of the prestressed chain, the load deflection in the prestressed chain is illustrated in FIG. 9.FIG. 10 shows the chain course including the buckets (moles) in the area of the sprockets and the connection of the sprocket Pos. 29 with the shaft Pos. 34, keyed by the pos. 30.FIG. 11 shows the displacement position of the sprocket Pos. 29 and the shaft Pos. 34.In FIGS. 12 to 15, the payload (material) 14 and 15 is additionally illustrated.FIG. 16 shows the displacement of the shaft Pos. 34 with the construction Pos. 32 through the ball bearings Pos. 33. The displacement of the construction becomes Pos. 32 onto the platform Pos. The example of the embodiment is illustrated in FIG. 35. The drive complex Pos is also indicated. 45.FIG. 17 shows the pos. 31 denotes the radius of the sprockets Pos. 29 and the pitch of the sprockets Pos. 40 on the axis Pos. 34. At the spring-supported posture. 32, shown in the pose. 35 to 39 can be the chain force Pos. 43 and 44 for both the forward and the return run, which can be used for the control of the machine if necessary.In FIGS. 18-20, chain forces Pos are additionally generated. 42, 42A, 43, 43A and 44 for the forward and return strand.In FIG. 21, the sprocket Pos. 29, the shaft Pos. 34 and the connecting wedge Pos. 30 are additionally illustrated.In FIG. 22, the chain drive Pos. 45 with the transmission Pos. 45A, the brake Pos. 46, the motor Pos. 47, and the torques of support Pos. 48 and 48 A.In FIGS. 23 and 24, the ball bearing Pos. 33 on the shaft Pos. 34 is shown in the view and in the plan view.FIGS. 25, 26 and 27 additionally show the chain links Pos in detail. 51, the displacement Pos. 52 of the buckets (moles) Pos. 50, the bolts Pos. 53, the displacement Pos. 53A of the chain with the sprocket, and the chain guide Pos. 55. with the guide rail.FIGS. 28, 29 and 30 additionally show in detail the guide rail Pos. 54, the chain guide Pos. 55 and chain guide Pos. 53A.FIGS. 31, 32 and 33 additionally show the buckets (molders) Pos in cross section. 50 and the chain strand Pos. 2, wherein FIG. 21 shows the chain strand and FIG. 33 shows the bucket (mole) pos. 50 is a sectional view.In FIG. 34, a possibility for the operation "starting the empty conveyor machine" becomes Pos. As shown in FIG. 17A, the chain force is transmitted over the entire height with the chain force 56- 0 to 56- 12.FIGS. 35 and 35A additionally show the possibility of not prestressing the chain at the discharge, wherein in FIG. 35A the chain forces Pos. 14, 15 and 49.In Fig. 36, the infrastructure of the chain bias is again shown. The force on the chain tensioning wheels Pos. 11 are created with the help of the pos. 64 measured. The Pos. 64A measures the load cases of the dead weight of the chain Pos. 13 and 14 respectively and pretensioning the chain. Pos. 59. The Pos. 64B measures the load cases of the dead weight of the chain Pos. 13 and 14, payload Pos 15 and 16, respectively, and chain biasing. Pos. 59.Figures 37 and 38 additionally show the loads from the load case of prestressing, wherein Figure 38 shows the load case of prestressing the chain in cross section.In FIG. 39, the local occurrence of the pos is once again shown. 64A, B, C and D in an intermediate stage with its displacement Pos. 63 is shown.In FIG. 40, the different effect of the shaft displacement Pos is additionally obtained. 32 caused by dir pos. 64A, B, C and D and the driving unit Pos. 48A.FIG. 41 shows a possibility of displacement of the central support.FIG. 42 shows a possible design of a displacement platform on a round shaft.FIG. 43 shows a possible design of a displacement platform on a semicircular shaft.In FIG. 44, a possible height development of the construction from FIGS. 41 and 42 is shown once again.If reference numerals used in FIGS. 1 to 44 have not yet been mentioned above, their significance can be gathered from the following overall overview. 1 complete machine 2 chain completely in the forward run and return run 3 sprocket in the unloading unit (discharge) 4 sprocket in the loading unit (feed) 5 sprocket in the intermediate stages 6 loading tray 7 unloading tray 8 freely 9 additional chain monitoring (if necessary) 10 optical sensors for determining the loading state of the buckets Mu(o)lt pos. 50 11 Sprocket for prestressing the chains in the individual stages 12 Length of the individual stages (possible between 20 and 50 m) 13 Chain force due to the dead weight of the chain + buckets at the loading station or unloading station 14 Chain force due to the dead weight of the chain + buckets in the intermediate stages 15 Chain force due to the payload in the buckets in the intermediate stages 16 Chain force due to the payload in the buckets at the unloading station 17 Drive torque for the entire load case Payload 17A Cutting torque for loading the buckets Pos. 50 17B moment for the payload in one stage 17C moment for the payload in the upper stage including shedding 17D acceleration moment for starting the chains 18 friction moment between Pos. 54 and 55 at the loading or unloading station 19 frictional moment between pos. 54 and 55 at intermediate stations 20 chain force caused by Pos. 18 at the loading or unloading station 21, chain force caused by Pos. 19 at the intermediate stations 22, payload in the buckets Mu(o)lts 23, upper force from the local moment of the buckets Mu(o)lts from the payload 24, lower force from the local moment of the buckets Mu(o)lts from the payload 25, center-of-gravity distance of the payload in the buckets Mu(o)lts from the chain guide 26, distance of the buckets Mu(o)lt displacement in the chain 27, chain force above the buckets Mu(o)lt displacement 27A, chain force below the buckets Mu(o)lt displacement 28, distance of the chain deflection due to pos. 11 29 sprocket generally 30 sprocket attachment wedges Pos. 29 with the shaft Pos. 34 31 Distance of chain to center in the area of the sprockets 32 Displacement device of the shaft Pos. 34 33 Rotary bearing of the shaft Pos. 34 34 shaft 35 shaft displacement platform Pos. 34 plus drive Pos. 45 to 48 36 displacement bolts 1 for the shaft displacement Pos. 32 37 Displacement bolt 2 for shaft displacement Pos. 32 38 Displacement bolt 3 for shaft displacement Pos. 32 39 displacement bolts 4 for the shaft displacement Pos. 32 40 Distance of the sprockets from the center 41 Chain forces everywhere on the conveying stages from Pos. 59 42 chain forces at the conveying stages from Pos. 59 + Pos. 13 42A chain forces at the conveying stages from Pos. 59 + Pos. 13+Pos. 15 + Pos. 16 43 chain forces at the conveying stages from Pos. 59 + Pos. 14 43A chain forces at the conveying stages from Pos. 59 + Pos. 14+Pos. 15 44 chain forces at the conveying stages from Pos. 59 + Pos. 13+Pos. 15 45 Gear box generally 46 Brake on the gear box 47 Drive of the gear box 48 Displacement carrier of the gear box 48A Displacement carrier of the counterpart of the gear box 49 Distance of gear box displacement to the shaft 50 Buckets Mu(o)llt generally 51 Chain links 52 Displacement structure of buckets to the chain 53 Chain pin 53A Guide roller of chain with the sprocket 54 Guide rail of guide roller of chain Pos. 55 Guide roller of chain with guide rail 56 Pos. 0 to 12 chain force due to activation of the chain Pos. 17A 57 Spacing of bolts in chain 58 Chains Horizontal force due to Pos bias. 11 59 chain force due to the load case pretension 60 distance of the chain pretension 61 distance of the chain pretension 62 distance of the chain to the center in the region of the chain pretension 63 displacement construction of the chain pretension 64 tensioning device + measuring device generally 64A return run at the top 64B forward run at the top 64C forward run at the bottom 64D return run at the bottom

Claims

Conveying machine equipped with the feed point (6) and discharge point (7) at which the drive torque (17) is applied to the discharge (3) by the drive (45, 46, 47 and 48).Conveyor machine according to claim 1, characterised in that the drive torque (17) is divided, the torque (17A) is applied at the feed point (6) by a smaller drive (45-48), the torque (17B) is applied at the intermediate stages (5) by a smaller drive (45-48) and the torque 17C) is applied at the discharge point (7) by a smaller drive (45-48).Conveyor machine according to claim 1 or 2, characterised in that devices for better chain adhesion of the chain (2) to the chain wheels (3 to 5) are ensured.Conveyor machine according to claim 3, characterised in that the device (9) for chain monitoring is fitted.Conveyor machine according to claim 4, characterised in that the device (10) for monitoring the filling of the buckets (Mu(o)lten and thereby for optimum control of the drive torques (17B and 17C).Conveyor according to Claim 5, characterized in that the means (36 to 39) for monitoring the displacement of the shaft (34) ensure optimum control of the drives (17B and 17C).Conveyor machine according to claim 6, characterised in that the devices (64A to D) for monitoring the chain forces and thereby additionally ensures optimum control of the drives (17B and 17C).

Images