Vibration device with self-adjusting impact bars

Description

[0001] The invention relates to a vibrating device, in particular for a concrete block manufacturing machine or a concrete block manufacturing plant, with self-adjusting impact bars.

[0002] Vibration devices of this type are used to improve the quality of various precast concrete products, such as concrete slabs or blocks, by compacting them during the manufacturing process. Such a vibration device typically features a dynamically moving vibrating table with vibrating table bars, which is driven by electric motors, such as servo motors, and unbalanced shafts. Impact bars are rigidly bolted to the machine frame of the vibration device, counteracting the vibration table bars. This prevents the impact bars from moving during the vibration of the table and, depending on the type of substrate, they are usually positioned between 0 and 1 mm below the vibration table bars.During the compaction process, only the vibrating table slats move together with the vibrating table in an up and down motion, so that the production substrate, which is elastically clamped on it, hits the impact slats in its downward movement.

[0003] Such vibrating table systems have the disadvantage that the impact bars must be checked and readjusted at regular intervals. This readjustment and inspection of the impact bars takes up to three hours of work and involves the partial disassembly of individual components of the vibrating table system and / or the concrete block production machine. The adjustment process is very complex, as a fully equipped concrete block production machine offers the operator very little working space. Therefore, during the readjustment and inspection of the impact bars, the entire concrete block production machine is brought to a standstill, and the positions of the impact bars relative to the vibrating table are manually adjusted one by one to prevent uneven wear of the vibrating table and impact bars, and thus a deterioration in the quality of the precast concrete products.

[0004] CN 104 029 277 A discloses a vibrating device with a vibrating table for a concrete block manufacturing machine for compacting a material to be compacted, according to the preamble of claim 1.

[0005] Therefore, the object of the invention is to provide a vibration device with self-adjusting impact bars that automatically and quickly readjust themselves with respect to the vibration bars.

[0006] This problem is solved by a vibrating device with a vibrating table for a concrete block manufacturing machine for compacting a material to be compacted according to claim 1. Essentially, the vibrating device is at least partially elastically mounted and attached to a machine frame. Preferably, the vibrating table is connected to several rubber buffers, which are attached to the machine frame, preferably by screws. The vibrating device is driven by at least one electric motor, preferably a servo motor. Preferably, the unbalanced masses or unbalanced shafts installed in the vibrating table are driven by at least one electric motor. The vibrating table can be set into a predominantly vertical vibrating motion. Preferably, the unbalanced masses or unbalanced shafts are set into rotation by the servo motor, whereby the vibrating table thereby performs a predominantly vertical up-and-down movement.By changing the rotational speed and / or the angle between the unbalanced masses, the amplitude of the vibrating table during the vibration movement is preferably modulatable. Such a vibrating device has several vibrating table bars arranged parallel to one another and attached to the vibrating table, and impact bars statically attached to the machine frame. According to the invention, all impact bars are displaceable relative to the vibrating table bars and along a displacement axis parallel to the vertical vibration movement by several interconnected drive units driven by adjustment devices, in order to achieve a displacement of all impact bars. Such displacement of the impact bars can, in principle, be synchronous or asynchronous.

[0007] The key feature of the invention is the vertical displacement of impact bars relative to vibrating table bars with adjustment devices, where all adjustment devices are driven by drive units along the displacement axis. This enables automatic adjustment and readjustment of the impact bars in such a vibrating device. According to the invention, each impact bar is individually driven by its own drive unit, allowing each adjustment device to be individually controlled and / or motorized. This minimizes the adjustment time during automatic impact bar adjustment. Furthermore, the entire system can resume the production process immediately after the impact bars are adjusted, without requiring the disassembly of any parts of the concrete block manufacturing machine.This significantly reduces wear on the vibrating table and, in particular, the impact bars, which in turn leads to consistent end-product quality. The readjustment of the impact bars on such vibrating systems is therefore virtually error-free thanks to a fully automatic adjustment mechanism, as human operator error is largely eliminated. Overall, such a vibrating system with self-adjusting impact bars is particularly advantageous in terms of cost savings, as not only does the concrete block production machine experience significantly less wear, but the likelihood of producing defective goods is also reduced many times over.

[0008] According to the invention, such vibrating devices are adjusted along the displacement axis using two adjustment devices per impact bar. The adjustment devices are mounted at opposite ends of the impact bar. This allows the impact bars to be aligned vertically, and wear at one end of the impact bar can be compensated for by an inclination.

[0009] In a preferred embodiment, all impact strips have a wear strip connected to a support strip, wherein the support strip is connected to at least one adjustment mechanism by at least one fastening device. Preferably, the wear strip is screwed to the support strip, wherein the support strip is mounted on or in the adjustment mechanism.

[0010] Such vibration devices preferably have two fastening devices per impact bar, wherein the impact bar is adjustable by the synchronous displacement of the fastening devices along the displacement axis.

[0011] Preferably, the fastening device has two fastening elements, preferably an upper and a lower bearing shell, wherein the impact strip is connected to the adjustment device by the two bearing shells. The upper bearing shell is preferably attached to the wear strip with its upward-facing side, and the lower bearing shell is connected to the adjustment mechanism. The upper bearing shell is preferably screwed to the lower bearing shell from below. It is also preferably the case that the lower bearing shell is connected from below to a housing for the adjustment mechanism in order to protect the adjustment mechanism from external influences. The connection between the lower bearing shell and the housing of the adjustment mechanism can essentially be a bearing arrangement.

[0012] Preferably, the support strip is mounted between the upper and lower bearing shells, wherein when the sliding mechanism is actuated, the entire fastening device along the sliding axis can be changed in height and thus the impact strip can be adjusted relative to vibrating table strips.

[0013] It is also conceivable that the impact bars can be tilted by the adjustment devices. According to the invention, the surface of each impact bar can be adjusted to a tilt angle relative to the horizontally aligned vibrating table bars by means of the adjustment devices. The adjustment mechanism includes means for setting the tilt angle of the impact bar's surface in order to position the impact bar at a desired angle. This has the effect that uneven wear of the impact bars can be counteracted by tilting them.

[0014] It is conceivable that such a fastening device allows an impact bar to be adjusted at an angle relative to the vibrating table bars. It is conceivable that the first fastening element is essentially in the shape of a milled cylinder and the second fastening element is essentially in the shape of a cuboid. The first fastening element is preferably rotatable within the second fastening element. The upper bearing shell can preferably be rotated within the lower bearing shell about a central axis of the upper bearing shell. The central axis preferably runs parallel to a propagation direction of the impact bars. Preferably, a rotational movement about the central axis is suitable and intended for adjusting the tilt angle of the impact bar's surface. This allows the impact bar to be adjusted to a desired inclined position particularly easily.

[0015] In a further preferred embodiment, the adjustment mechanism comprises an upper wedge element and a lower wedge element connected to a shaft. By rotating the shaft, the lower wedge element is preferably displaceable along an axis running parallel to the impact strips. This allows the upper wedge element to be adjusted along the displacement axis, with the upper wedge element sliding along an inclined upper surface of the lower wedge element on its inclined lower surface.

[0016] The shaft, preferably a spindle, is provided with a thread to convert a rotary motion into a longitudinal motion.

[0017] Preferably, the lower wedge element has a horizontal surface that is arranged opposite the inclined surface of the lower wedge element. Parallel to the inclined surface of the lower wedge element, an inclined lower surface of the upper wedge element is preferably arranged. The inclined surfaces of the lower and upper wedge elements are preferably connected to each other by friction. It is conceivable that the inclined surfaces of the two wedge elements are coated with a suitable lubricant to improve sliding.

[0018] It is also conceivable that the inclined surfaces of the lower and upper wedge elements can be arranged at an angle to a normal vector of the impact bar in order to achieve an inclined setting of the impact bar. The inclined surfaces of the lower and upper wedge elements are preferably arranged at an angle such that the impact bar can be adjusted at an angle of inclination relative to the at least adjacent horizontally oriented vibrating table bars.

[0019] The lower and upper wedge elements are preferably movable within the housing along an axis perpendicular to the displacement axis. The movement can occur either along the axis parallel to the impact bars (i.e., horizontally) or along the axis perpendicular to the impact bars (i.e., vertically).

[0020] The lower wedge element preferably has a thread which is connected to the shaft or spindle of the adjusting mechanism. By rotating the shaft, the lower wedge element can be set into relative motion with respect to the upper wedge element.

[0021] In another embodiment, the upper wedge element is connected to a fastening element of the mounting device in order to move the impact strips along the displacement axis. It is also conceivable that the upper wedge element is part of the fastening element.

[0022] Preferably, the lower bearing shell of the fastening device is connected to the upper wedge element. It is conceivable that the lower bearing shell and the upper wedge element are bonded, screwed, or doweled together. Alternatively, it is also conceivable that the lower bearing shell and the upper wedge element are formed as a single fastening element. This requires that the housing of the adjustment mechanism has a recess into which the upper wedge element can be inserted. Preferably, the recess is arranged on an upward-facing side of the housing.

[0023] The upper and lower wedge elements are preferably arranged within the housing in a cavity, the cavity having the basic shape of a cube segment. All lateral walls of the upper wedge element preferably contact the walls of the cavity. In contrast, at least two of the lateral walls of the lower wedge element contact the lateral walls of the cavity. It is conceivable that, at maximum or minimum height adjustment of the impact bar, three of the lateral walls of the lower wedge element contact the lateral walls of the cavity. Preferably, when the impact bars are adjusted, the lower wedge element slides along the lateral walls of the cavity, while the upper wedge element is moved along the inclined side of the lower wedge element.

[0024] In another embodiment, the adjustment mechanism has a worm wheel and a worm shaft, wherein the fastening device connected to the worm wheel can be adjusted along the displacement axis by rotating the worm shaft, wherein the worm wheel is toothed on its end face with the worm shaft.

[0025] The adjustment mechanism is therefore preferably a so-called worm gear, wherein the worm shaft, with its thread, advances one or more teeth of the worm wheel with each revolution. The worm wheel is preferably arranged below the lower bearing shell. Preferably, the worm wheel has an internal thread which meshes with a thread of a screw element, preferably a spindle, to connect the fastening device to the worm wheel. The screw element is supported at least partially within the upper surface of the lower bearing shell. By rotating the worm wheel, the screw element can be adjusted along the displacement axis, whereby the resulting displacement of the impact bar relative to the vibration bars can be continuously adjusted.

[0026] Alternatively, the adjustment mechanism could incorporate a stepping drive, such as a cylindrical cam drive or a globoidal drive. Such stepping drives allow the screw element to be adjusted stepwise along the displacement axis due to the clocked movement of the worm gear. A particular advantage of this is that the resulting displacement of the impact bar relative to the vibrating table bars can then preferably be adjusted incrementally. In principle, all known types of gears are conceivable as adjustment mechanisms.

[0027] In a further preferred embodiment, the adjusting mechanism has a spur gear toothed with a spur gear shaft and connected to the fastening device, wherein the fastening device can be adjusted along the displacement axis by rotating the spur gear shaft.

[0028] The adjustment mechanism can alternatively be a spur gear drive, wherein two spur gears or the spur gear and the spur gear shaft are meshed together. Preferably, the spur gear is arranged below the lower bearing shell, with a screw element, preferably a spindle, meshing with an internal thread of the spur gear within the spur gear to connect the mounting device to the spur gear. By rotating the spur gear shaft, the screw element can be moved along the axis of movement to adjust the impact bar along the axis of movement. The screw element is slidably mounted, at least partially, within the mounting device, preferably within the lower bearing shell.

[0029] It is conceivable that all adjustment devices are mechanically, hydraulically, pneumatically and / or electronically interconnected in order to move the impact bars along the displacement axis and thus adjust them relative to the vibrating table bars.

[0030] According to an unclaimed aspect, the mechanical connection of the individual adjustment devices comprises at least one common connecting element, which, by its shape, is suitable for transmitting a drive movement synchronously to all adjustment devices. According to the invention, the adjustment devices are individually driven by several drive units, the number of drive units corresponding to the number of adjustment devices. The adjustment devices are then preferably electronically interconnected via the setting of the drive units to enable the synchronous displacement of the impact bars. Preferably, the drive units are connected to a common signal source via wired and electronic means, the signal source sending an electrical signal to all drive units to drive the drive units synchronously.

[0031] In a preferred embodiment, the adjusting devices have torque transmission devices which indirectly connect the adjusting mechanisms to the drive units in a holding device arranged laterally and / or below the vibrating table.

[0032] The drive unit is designed to generate torque, which is simultaneously transmitted to the adjustment device. Preferably, the drive unit is an electric motor or another motor that generates a rotary motion.

[0033] The mounting device is preferably at least partially bolted to the machine frame, the sides of a pit, or the foundation beneath the machine frame of the concrete block manufacturing machine, in order to mount the drive unit in a space-saving manner. Preferably, two mounting devices are attached laterally and / or beneath the vibrating table and along an axis perpendicular to the impact bars. In cases of particularly limited installation space within the vibrating unit, it is conceivable that the mounting device is arranged beneath the vibrating table on a side wall of the machine frame.

[0034] In this case, the drive units and the holding device preferably form a common connecting element to mechanically connect the adjustment devices. Preferably, the holding device includes means for transmitting torque to the torque transmission devices. For example, such means can be a chain, a driveshaft, or a toothed belt. Particularly preferably, the holding device can have a chain or a toothed belt flanged to it. In this way, the drive unit can preferably drive the chain or toothed belt to rotate, and this rotational movement is transmitted to the gears. According to an unclaimed alternative, the holding device can have deflection pulleys that transmit the torque of the drive unit to all the torque transmission devices, thus indirectly connecting the drive unit to the adjustment mechanisms.

[0035] According to an unclaimed aspect, the number of gears corresponds to the number of adjustment devices arranged at one end of the impact bar, so that two drive units are required for synchronous adjustment of all impact bars. According to an unclaimed alternative, the adjustment of the impact bars can also be carried out with one or more drive units by tensioning another chain or toothed belt between the two ends of all impact bars. In an unclaimed embodiment, the adjustment of the impact bars at both ends would be possible with one drive unit.

[0036] In a preferred embodiment, the torque transmission device has a cardan shaft which is suitable and intended for transmitting torque to the adjusting devices.

[0037] In a further preferred embodiment, the torque transmission device comprises a toothed belt which is suitable and intended for transmitting torque to the adjusting devices.

[0038] In another embodiment, the adjusting device has an angle gear which transmits the torque specified by the drive unit to the adjusting mechanism by an angle, wherein the angle gear is connected to the torque transmission device.

[0039] It is conceivable that the bevel gear could be, for example, a bevel gear or a hypoid gear. In principle, any type of bevel gear is possible with regard to the type of gearing or a combination of different gearing types. Preferably, the bevel gear is used in combination with the spur gear and the toothed belt or cardan shaft to transmit the rotary motion to the spur gear and thus move the impact bars in height and along the axis of displacement via the adjusting device.

[0040] In a further preferred embodiment, the vibration device is adjustable such that, in a rest state, the impact bars are arranged below the vibration table bars or span a common plane. Alternatively, it would also be conceivable to adjust the vibration device so that, in the rest state, the impact bars are arranged above the vibration table bars.

[0041] The position of the impact strips along the displacement axis depends on the material of the manufacturing base used in the production process. When using a wooden manufacturing base, the impact strips are preferably positioned between 1.2 mm and 0.7 mm, preferably 1 mm, below the vibrating table rails. When using a plastic manufacturing base, the impact strips are positioned between 0.7 mm and 0.3 mm, preferably 0.6 mm, below the vibrating table rails. When using steel manufacturing bases, the impact strips are positioned so that they form a common plane with the vibrating table rails.

[0042] The present invention further relates to concrete block manufacturing machines for compacting a material to be compacted. The previously described vibrating table device is considered part of the concrete block manufacturing machine.

[0043] Further objectives, advantages, features and application possibilities of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawings.

[0044] This shows: Fig. 1 in a perspective view, a concrete block production plant with a vibrating device and a plurality of impact bars adjustable by means of adjusting devices; Fig. 2 in a perspective view, an adjustment device of an impact bar according to a first embodiment of the invention; Fig. 2a in a perspective cross-sectional view, an adjustment device of an impact bar according to a first embodiment of the invention; Fig. 2b in a schematic representation, an adjustment device of an impact bar according to a first embodiment of the invention in a first position; Fig. 2cin a schematic representation, an adjustment device of an impact bar according to a first embodiment of the invention in a second position; Fig. 3 in a perspective view, an adjustment device of an impact bar according to a second embodiment of the invention; Fig. 3a in a schematic representation, an adjustment device of an impact bar according to a second embodiment of the invention in a first position; Fig. 3b in a schematic representation, an adjustment device of an impact bar according to a first embodiment of the invention in a second position; Fig. 4 in a perspective cross-sectional view, an adjustment device of an impact bar according to a third embodiment of the invention; Fig. 5 in a perspective view, adjustment devices with torque transmission devices according to an embodiment of the invention; Fig. 6in a perspective view, adjustment devices with torque transmission devices according to a further embodiment of the invention; Fig. 7a in a perspective transparent representation, an adjustment device of an impact bar according to a further embodiment of the invention; Fig. 7b in a perspective view, an adjustment device of an impact bar according to a in Fig. 7a The embodiment shown is a solid body.

[0045] Figure 1Figure 1 shows, in a perspective view, a concrete block production plant 28 with a vibrating device 1 and a plurality of impact bars 5 that are adjustable by means of adjusting devices 6. The vibrating device shown has a vibrating table 2 with vibrating table bars 4, which are bolted to a machine frame 3 of the concrete block production plant 28. The height of the impact bars 5 shown is adjustable relative to the vibrating table bars 4 by means of the adjusting devices 6.

[0046] Typically, a vibration device 1 of the same type has a total of five impact bars 5 and ten vibration table bars 4. Each impact bar 5 is arranged between two vibration table bars 4. Other numbers of impact bars 5 and vibration table bars 4 are also conceivable.

[0047] The illustrated adjustment devices 6 have fastening devices 11 and adjustment mechanisms 7. The adjustment mechanisms 6 are mechanically connected to drive units 20 via torque transmission devices 19. In the illustrated embodiment of the concrete block production device 28, the torque devices 19 are designed as cardan shafts 21.

[0048] The drive units 20 are mounted below a common mounting device 8. The mounting device 8 is preferably mounted laterally to the vibrating device 1 in a pit.

[0049] Figure 2Figure 1 shows, in a perspective view, an adjustment device 6 for an impact strip 5 according to a first embodiment of the invention. The adjustment device shown has an upper part, which is designed as a fastening device 11 for the impact strip 5, and a lower part, which is designed as an adjustment mechanism 7. The fastening device is intended for fastening the impact strip and has an upper bearing shell 23a and a lower bearing shell 23b, the latter having an upper wedge element 12, between which the impact strip 5 can be at least partially inserted. Both bearing shells each have a recess 24, the recesses together having a round shape when the bearing shells are screwed together.In the illustrated embodiment of the adjusting device, the lower bearing shell is shown together with an upper part of the adjusting mechanism 7, which is shown as an upper wedge element 12, as a single component.

[0050] The adjustment mechanism 7 is protected from external influences by a housing 23 and comprises an upper wedge element 12, a lower wedge element 14, and a shaft 13. The adjustment mechanism is designed to move the fastening device along a displacement axis z by rotating the shaft 13, thereby setting a desired position of the impact strip. For this purpose, the upper wedge element 12 has an inclined lower surface 12a, and the lower wedge element 14 has an inclined upper surface 14a, the two inclined surfaces being complementarily connected, in contact with each other, and preferably guided by a T-slot. The lower wedge element 14 is further connected by a thread (shown in Fig. 2a ) mechanically connected to the shaft 13 in a rotating manner.

[0051] The housing 23 for the adjusting mechanism 7 has a cavity 27 in which the wedge elements and the shaft are inserted. The cavity 27 preferably has a cube shape, in which the upper wedge element 12, with its similarly cube-like base shape, slides along the vertical sides during a displacement movement. The lower wedge element 14 is arranged in the lower region of the cavity 27 and slides along the two parallel vertical sides of the cavity during a relative movement caused by the rotation of the shaft. The housing 23 further has two parallel recesses 28a, 28b (shown in Fig. 2a ) on the vertical sides of the housing for the shaft and a further recess 28c (shown in Fig. 2a) on a top surface of the housing for the upper wedge element. The cavity 27 of the housing 23 forms the recess for the upper wedge element 12.

[0052] Figure 2a shows, in a perspective cross-sectional view, the adjustment device 6 from the Figure 2 The lower wedge element 14 has a thread 14a on its underside, into which a thread 13a of the shaft 13 is inserted. It is also conceivable that the lower wedge element 14 has a recess which is provided with a thread. In such a case, the shaft can be inserted into the recess of the lower wedge element 14 to mesh the shaft with the lower wedge element. Preferably, the shaft is designed as a spindle, which is inserted into the recesses 28a of the housing 23, with the thread 13a of the shaft being arranged predominantly within the cavity 27.

[0053] Figures 2b and 2c show, in a schematic representation, which is in Figure 2The adjustment device 6 is shown in a first P1 and a second P2 setting position. The adjustment device shown is displaceable along a displacement axis z. Position P1 represents a starting position, and position 2 a desired setting position of the adjustment device. Position 2 is characterized by the fact that the fastening device 11 can be adjusted higher overall compared to position 1 by a relative movement RB2, measured along the displacement axis z. This relative movement RB2 is a direct reaction to the relative movement RB1 of the lower wedge element 14 and the rotational movement D of the shaft 13. While the shaft 13 is rotated about its shaft axis WA, this rotational movement D is transmitted through its thread 13a to the thread 14b of the lower wedge element 14 as a translational movement TB along an axis y perpendicular to the displacement axis.The translational movement TB of the lower wedge element 14 is transferred via its inclined upper surface 14a to the upper wedge element 12 by sliding along the inclined lower surface 12a. This creates a relative movement RB1 between the upper wedge element 12 and the lower wedge element 14, which leads to a relative movement RB2.

[0054] Figure 3 Figure 1 shows, in a perspective view, an adjustment device 6 of an impact strip 5 according to a second embodiment of the invention. The adjustment device 6 shown here comprises a fastening device 11 with two bearing shells 23a, 23b, an adjustment mechanism 7, and a bearing element 25. It is conceivable that the bearing element 25 is a sliding bearing.

[0055] A baffle strip can be at least partially arranged and screwed in place between the bearing shells. The fastening device 11 is fundamentally similar to that in Figure 2shown fastening device. The only difference is that the lower bearing shell 23b is fitted with a screw element 26 (in Figure 3a (shown) is connected via the bearing element 25.

[0056] The adjustment mechanism 7 is a so-called worm gear and comprises a worm shaft 16 with a thread 16a, a worm wheel 15 with several teeth 15a, and the screw element 26 located within the worm wheel. The thread 16a is meshed with the teeth 15a, and the worm wheel 15 is screwed to the screw element 26 (in Fig. 3a (shown). The adjustment mechanism 7 is housed in a cavity 27 of a housing 23, which protects the components of the adjustment mechanism located therein from contamination, external forces and moisture.

[0057] Figures 3a and 3b show, in a schematic representation, which is in Figure 3The illustrated adjustment device of an impact bar is shown in a first adjustment position P1 and a second adjustment position P2. Positions P1 and P2 correspond to those in Figures 2b and 2c The defined starting position and desired adjustment position of the adjusting device 6. Position P2 can be set by rotating the worm shaft 16 about its own shaft axis WA, whereby the worm shaft 16, through its toothing with the worm wheel 15, rotates the latter about its own wheel axis RWA. The wheel axis RWA and the shaft axis WA are arranged perpendicular to each other, with the wheel axis running parallel to the displacement axis z.

[0058] When the worm shaft 16 is rotated, a first rotational movement D1 is generated, which is transmitted via the thread 16a to the teeth 15a of the worm wheel 15. This causes the worm wheel 15 to rotate about its axis RWA, resulting in a second rotational movement D2. This second rotational movement D2 displaces a screw thread 15b located inside the worm wheel 15, a screw thread 26a of the screw element 26, upwards in a relative movement RB along the displacement axis z.

[0059] Figure 4Figure 1 shows, in a perspective cross-sectional view, an adjusting device 6 of an impact bar 5 according to a third embodiment of the invention. The adjusting device 6 has an adjusting mechanism 7, which is a spur gear drive. The adjusting mechanism 7 has a spur gear shaft 17 and a spur gear 18, wherein the spur gear shaft 17 is meshed with the teeth 18b of the spur gear 18 via its teeth 17a. The adjusting device 6 shown is similar to the one in Figure 1. Figure 3 The adjustment device shown. A key difference is that the spur gear shaft 17 rotates about a shaft axis that runs parallel to the spur gear axis RWA. The spur gear axis RWA and the shaft axis WA both run parallel to a displacement axis z.

[0060] Figure 5 shows, in a perspective representation, which in Figure 1The illustrated adjustment devices 6 with torque transmission devices 19. In the figure shown, the torque transmission devices 19 represent toothed belts 21. The adjustment devices 6 are driven by a drive unit 20 via toothed belt pulleys or toothed belt wheels 8a and a torque transmission device 19. Preferably, the holding device 8 has several vibration dampers 8b, which protect the individual components from vibrations during the production process. The second torque transmission device, the idler gears 8a, and the drive unit 20 could be attached to a holding device 8. The number of toothed belt pulleys or toothed belt wheels 8a corresponds to the number of adjustment devices 6, so that each adjustment device 6 has its own torque transmission device 19 and the toothed belt pulleys or toothed belt wheels 8a.The toothed belt pulleys 8a adjust the adjustment mechanisms 7 to achieve a displacement of the impact bars 5 relative to the vibrating table bars 4. In the illustrated embodiment of the invention, ten drive units 20 are arranged below the holding device 8.

[0061] The impact strips 5 each have a support strip 9 and a wear strip 10, the support strips 9 being screwed within the fastening devices 11 between two bearing shells 23a, 23b. The wear strips 10 are screwed in place above the fastening devices 11.

[0062] Figure 6 shows, in a perspective representation, which in Figure 3The illustrated adjusting devices 6 with torque transmission devices 19 according to a further embodiment of the invention. In the figure shown, the torque transmission devices 19 represent cardan shafts 22. Advantageously, the cardan shafts 22 are combined with the spur gears as adjusting devices 6.

[0063] Figure 7a Figure 1 shows, in a perspective transparent view, an adjustment device 6 of an impact bar 5 according to a further embodiment of the invention. Figure 7b Figure 6 shows the same adjusting device 6 as a solid body. The adjusting device 6 shown is essentially similar to the adjusting device from the Figure 2 The adjusting device 6 therefore also has a fastening device 11 for the impact strip 5 and an adjusting mechanism 7, which is installed in a housing 23.

[0064] The fastening device 11 preferably comprises a first fastening element 23a and a second fastening element 23b, wherein the second fastening element 23b has a bore 23c, preferably a partially open bore, into which the first fastening element 23a can be inserted. The second fastening element 23b is essentially cuboid in shape, which can be partially inserted into a housing 23. The portion of the second fastening element 23b that can be inserted into the housing 23 preferably has a wedge element 12 with an inclined lower surface 12a. This surface 12a is, as shown in Figure 2 explained, part of the adjustment mechanism 7. The first fastening element 23a can be inserted at least partially into the part of the second fastening element 23b located outside the housing 23.

[0065] Preferably, the first fastening element 23a has a substantially cylindrical shape. It is conceivable that the lateral surface of the first fastening element 23a has a flat surface 23d which can be arranged outside the second fastening element 23b.

[0066] It is conceivable that such a fastening device 6 allows an impact bar 5 to be adjusted at an angle relative to the vibrating table bars 6 by rotating the first fastening element 23a within the second fastening element 23b about a central axis M of the first fastening element 23a. Preferably, such a rotational movement D4 about the central axis M is suitable and intended for adjusting an inclination angle of the surface of the impact bar 5. This allows the impact bar 5 to be adjusted to a desired inclined position particularly easily. Reference symbol list

[0067] 1 Vibration device 2 Vibration table 3 Machine frame 4 Vibration table slats 5 Impact bars 6 Adjustment device 7 Adjustment mechanism 8 Holding device 8a Toothed belt pulley / Toothed belt wheel 9 Support strip of an impact bar 10 Wear strip of an impact bar 11 Fastening device 12 Upper wedge element 12a Slanted lower surface of the upper wedge element 13 Shaft 13a Thread of the shaft 14 Lower wedge element 14a Slanted upper surface of the lower wedge element 14b Thread of the lower wedge element 15 Worm wheel 15a Teeth of the worm wheel 15b Screw thread inside the worm wheel 16 Worm shaft 16a Thread of the worm shaft 17 Spur gear shaft 17a Gears of the spur shaft 18 Spur gear 18a Teeth of the spur gear 19 Torque transmission device 20 Drive unit 21 Cardan shaft 22 Timing belt 23 Housing 23a Upper bearing shell / first fastening element 23b Lower bearing shell / second fastening element 23c ¾ bore 24 Recess in fastening device 25 Bearing element 26 Screw element 26a Screw threadof the screw element 27 Cavity in the housing 28 Concrete block manufacturing machine Z Displacement axis Y Axis parallel to the impact bar X Axis perpendicular to the impact bar and the displacement axis D1 First rotational movement D2 Second rotational movement D4 Rotational movement about the central axis M Central axis of the upper bearing shell WA Shaft axis RWA Wheel axis RB1 First relative movement RB2 Second relative movement P1 First setting position of the adjusting device / starting position P2 Second setting position of the adjusting device / desired setting position

Claims

1. A vibrating device (1) comprising a vibrating table (2) for a concrete block manufacturing machine for compacting a material to be compacted, wherein the vibrating device (1) is mounted on a machine frame (3) with at least partial elastic support and driven by at least one electric motor, thereby causing the vibrating table (2) can be set in a predominantly vertical vibrating motion, wherein the vibrating device (1) comprises several vibration table strips (4) arranged parallel to one another and secured to the vibration table (2) vibrating table strips (4) arranged parallel to one another and fixed to the vibrating table (2), and impact strips (5), wherein the impact strips (5) are displaceable relative to the vibrating table strips (4) and along a displacement axis (z) running parallel to the vertical vibrating motion by means of adjustment devices (6), wherein the vibrating device (1) comprises two adjustment devices (6) per impact strip (5), which are each mounted at the opposite ends of the impact strip, wherein the vibrating device (1) is configured to adjust the surface of each impact bar (5) by means of the adjustment devices (6) to an angle of inclination relative to the horizontally aligned vibrating table bars (4), characterized in that all impact bars (5) are displaceable relative to the vibrating table bars (4) and along the displacement axis (z) by means of adjustment devices (6) driven by a plurality of interconnected drive units (20) to achieve displacement of all impact bars (5), and that the adjustment devices (6) are driven individually by a plurality of drive units (20), wherein the number of drive units corresponds to the number of adjustment devices (6).

2. A vibrating device (1) according to claim 1, characterized in that all impact strips (5) comprise a wear strip (10) connected to a support strip (9), each adjustment device (6) comprises a fastening device (11) and an adjustment mechanism (7), wherein the support strip (9) is connected to the adjustment mechanism (11) to the adjustment mechanism (7).

3. Vibrating device (1) according to claim 2, characterized in that the adjustment mechanism (7) comprises an upper wedge element (12) and a lower wedge element (14) connected to a shaft (13), wherein the rotation of the shaft (13) causes the lower wedge element (14) to move along an axis (y) parallel to the impact strips (5) and thereby the upper wedge element (12) is adjustable along the displacement axis (z), wherein the upper wedge element (12) is guided on its underside slides along an inclined upper surface (14a) of the lower wedge element (14).

4. Vibrating device (1) according to claim 3, characterized in that the upper wedge (12) is connected to a fastening element (23b) of the fastening device (11) to displace the impact strips (5) along the displacement axis (z).

5. A vibrating device (1) according to claim 2, characterized in that the adjustment mechanism (7) comprises a worm wheel (15) and a worm shaft (16), wherein the rotation of the worm shaft (16) allows the fastening device (11), which is connected to the worm wheel (15), to be adjusted along the displacement axis (z), wherein the worm wheel (15) is connected at its end face to the worm shaft (16).

6. A vibrating device (1) according to claim 2, characterized in that the adjustment mechanism (7) comprises a spur gear (18) meshed with a spur gear shaft (17) and connected to the fastening device (11), wherein the fastening device (11) is adjustable along the displacement axis (z) by the rotation of the spur gear shaft (17).

7. A vibrating device (1) according to any one of claims 2-6, characterized in that the adjustment device (6) comprises a torque transmission device (19) that indirectly connects the adjustment mechanisms (7) to the drive unit (20) via a mounting device (8) arranged to the side and / or below the vibrating table (2).

8. A vibrating device (1) according to claim 7, characterized in that the torque transmission device (19) comprises a cardan shaft (22) which is suitable and intended for transmitting torque to the adjustment devices (6).

9. Vibrating device (1) according to claim 7, characterized in that the torque transmission device (19) comprises a toothed belt (21) which is suitable and intended for transmitting torque to the adjustment devices (6).

10. A vibrating device (1) according to claim 7 or 9, characterized in that the adjustment device comprises an angular gear mechanism that transmits the torque provided by the drive unit to the adjustment mechanism by an angle, wherein the angular gear mechanism is connected to the torque transmission device.

11. A vibrating device (1) according to any of the preceding claims, characterized in that the vibrating device (1) is adjustable such that, in a rest state, the impact strips (5) are arranged below the vibrating table strips (4) or span a common plane.

12. A vibrating device (1) according to claim 2, characterized in that the fastening device (11) comprises a first fastening element and a second fastening element, wherein the first fastening element has the shape of a milled cylinder and the second fastening element has the shape of a cuboid.

13. Concrete block manufacturing machine (28) for compacting a material to be compacted, wherein the concrete block manufacturing machine (28) comprises a vibrating device (1) according to the preceding claims.