NL2002804C2

NL2002804C2 - VIBRATOR-SYSTEM AND VIBRATION-BLOCK FORMING PART THEREOF.

Info

Publication number: NL2002804C2
Application number: NL2002804A
Authority: NL
Inventors: Jan Robert Es
Original assignee: Dieseko B V
Priority date: 2009-04-24
Filing date: 2009-04-24
Publication date: 2010-10-26

Description

Vibrator-system and vibration-block forming part thereof

The invention relates to a vibrator-system for sinking an object into the ground by means of a vibration, comprising a series of vibration blocks having at least a first vibration block and a second vibration block, each block being equipped 5 with at least one axle with at least one rotatable eccentric weight for the generation of a vibration, wherein adjacent blocks are provided with an interlink for synchronizing the eccentric weights of such adjacent blocks.

Such a vibrator-system is known from practice and is 10 used to sink an object into the ground. The object may for instance be a tube or wall for constructional purposes or for providing a limitation to the groundwater preventing that the water moves to undesired areas in the ground.

When the vibration of the object to be placed in the 15 ground places high demand on the amount of power to be used, it is at times necessary to apply a vibrator-system having multiple vibration blocks. It is then required to operate the vibration blocks concerted. For this purpose the blocks are provided with interlinks for synchronising the eccentric weights of the blocks 20 forming part of such a series of vibration blocks.

It is possible to apply cardan-joints to provide the interlink between adjacent blocks in order to synchronise the eccentric weights of these blocks. The application of cardan-joints is however cumbersome in view of the labour involved and 25 the necessity to apply additional cardan-axels to provide the interlink between the eccentric weights of the adjacent blocks.

It is therefore an object of the invention to provide another solution that avoids the necessity to apply such cumbersome cardan-joints for the synchronisation of the eccentric 30 weights of adjacent blocks.

In accordance with the invention therefore a vibrator-system and a vibration-block is proposed in accordance with one or more of the appended claims.

The essence of the invention is that the interlink is 35 selected from the group comprising mechanical connection means forming an integral part of the blocks, and electrical connection-means .

A first embodiment according to which the vibrator-system of the invention can be arranged comprises in each of the 2 blocks at least one electrical motor for driving the eccentric weights. The interlink for synchronising the eccentric weights of the adjacent blocks can then be arranged by applying stepping motors for the electrical motors and arranging that the motor's 5 of all blocks are connected to powerlines having the same phase-shift so as to effect that all said motors are driven in synchronism.

In another embodiment, in which each of the blocks comprises a hydraulic motor or an electrical motor for driving the 10 eccentric weights, the invention can be embodied by providing that the at least one axle of the first vibration block is provided with a first gearwheel, and that the at least one axle of the second vibration block is provided with a second gearwheel, which first and second gearwheel are arranged with intermeshing 15 teeth.

Both the first and the second embodiment provide the beneficial effect that the vibrator-system of the invention can be easily supplemented with additional vibration blocks without much ado in terms of labour and without need to apply additional 20 means to provide the interlink for the synchronisation of the eccentric weights of the vibrator-system. On the contrary, the expansion or reduction of the number of vibration-blocks applied in the vibrator-system of the invention, can be easily realised due to the circumstance that no parts external of the vibration-25 blocks need to be handled for the synchronisation of the eccentric weights of the respective blocks.

The synchronisation of the eccentric weights of all blocks of the vibrator-system is preferably carried out such that each of said blocks has a gearwheel co-operating with the 30 gearwheel of an immediately adjacent block.

The ease of assembling of the series of blocks is further promoted by the feature that each of the blocks of the vibrator-system has at least one gearwheel that is freely accessible from a side perpendicular to the axle of the concerning 35 block.

Ά further preferable feature is that each of the blocks of the vibrator-system has at least one gearwheel with teeth that are rounded at the teeth' outer circumference. This feature allows the application of the vibrator system of the invention 40 with tubes of very differing diameters. The rounded shape of the teeth' outer circumference then allows that the neighbouring blocks of the series of vibration blocks occupy an oblique posi- 3 tion with respect to each other so as to match the curvature of the tube, which is to be vibrated into the ground.

From the above description it will be clear that the invention and the scope of protection sought for, is also embod-5 ied in a separate vibration block, which can co-operate with other similar vibration blocks so as to form a vibrator-system as discussed herein.

The invention will hereinafter be further elucidated with reference to the drawing.

10 In the drawing: - Fig. 1A en Fig. IB show a perspective and a side-view of a vibrator-block having a single axel with eccentric weights in accordance with the invention, provided with an hydraulic motor; 15 - Fig. 2A and Fig. 2B show a perspective and a side- view of a vibrator-block as in Fig. 1A and Fig. IB, however with two axels, each axel carrying eccentric weights; - Fig. 3A and 3B show a perspective and a side-view of a single vibration-block having a single axel with eccentric 20 weights in accordance with the invention powered by an electrical motor; - Fig. 4A and 4B show a vibrator-block similar to the vibrator-block shown in Fig. 3A and 3B, however with two axels, each axel carrying eccentric weights; 25 - Fig. 5A and 5B show a perspective and a side-view of a single vibration-block with a single axel carrying eccentric weights in accordance with the invention and provided with an electrical stepping motor; - Fig. 6A and 6B shows a vibration-block similar to the 30 block shown in Figs. 5A and 5B, however with two axels, each axel carrying eccentric weights; - Fig. 7A and 7B shows a top- and a side-view of a tube provided with a vibrator-system of the invention assembled from single vibration-blocks as shown in Fig. 3A and 3B; 35 - Fig. 8A and 8B shows a top- and a side-view of a tube provided with a vibrator-system in accordance with the invention

provided with a series of vibration-blocks as shown in Fig. 2A

and Fig. 2B; - Fig. 9A and 9B shows a top-view and a side-view of a 40 tube provided with four vibrator-systems of the invention, each vibrator-system assembled from separate vibration-blocks as shown in Fig. 3A and 3B; 4 - Fig. 10A and 10B shows a top-view and a side-view of a tube provided with four vibration-systems of the invention, each vibrator-system assembled from two vibration-blocks in accordance with the blocks shown in Figs. 2A and 2B; 5 - Fig. 11 shows a vibrator-system of the invention as sembled from two vibration-blocks as shown in Fig. 1A and IB that are placed in line with other; - Fig. 12 shows a vibrator-system in accordance with the invention assembled from four separate vibration-blocks as 10 shown in Fig. 1A and IB that are placed in line with other, and - Fig. 13 shows in detail intermeshing teeth of gearwheels forming part of adjacent vibration-blocks.

Wherever in the figures the same reference numerals are applied these numerals refer to the same parts.

15 With reference to Fig. 7A/7B, Fig. 8A/8B, Fig. 9A/9B

and Fig. 10A/10B a vibrator system is shown in accordance with the invention and indicated with reference numeral 1.

The vibrator-system 1 is shown in assembled condition and placed on top of a tube 2, which is intended to be sunk into 20 the ground by means of vibration.

As the mentioned figures clearly show the vibrator-system 1 is assembled from a series of vibration-blocks, some of which blocks are individually indicated with reference numeral 3.

25 In the minimum configuration the series of vibration- blocks of a vibrator-system comprises at least a first vibration-block 3' and a second vibration-block 3'' as shown in Fig. 10A and 10B, but as the earlier mentioned other figures show, this number of vibration blocks forming a vibrator-system can be 30 easily extended up to the desired amount.

Making now reference to Fig. 1A/1B, Fig. 2A/2B, Fig. 3A/3B, Fig. 4A/4B, Fig. 5A/5B and Fig. 6A/6B it is clearly shown that each block 3 is equipped with at least one axel 4 that is provided with at least one rotatable eccentric weight 5, 6, 35 which can be brought into rotation for the generation of a vibration. The block 3 therefore can be provided with an hydraulic motor 7 as shown in Fig. 1A/1B and Fig. 2A/2B or with an electric motor 8 as shown in Fig. 3A/3B and Fig. 4A/4B.

In Fig. 5A/5B and Fig. 6A/6B the electric motor 8 is a 40 stepping motor.

Further to what is shown in Fig. 5A/5B and Fig. 6A/6B the stepping motor 8 of the blocks 3 shown in these figures are 5 in use connected to power lines having the same phase or phase shift such that these motors are driven in synchronism so as to cause that the eccentric weights that are part of the series of vibration blocks 3 that together form the vibrator system 1 of 5 the invention carry out a concerted rotation. This embodiment requires no further elucidation for the person skilled in the art. Hence, a further discussion of this embodiment can be dispensed with.

If not an electrical stepping motor but a general elec-10 trical motor is applied, or if a hydraulic motor is applied then again with reference to Fig. 1A/1B, Fig. 2A/2B, Fig. 3A/3B and Fig. 4A/4B the vibrator block 3 of the invention is provided with a gearwheel 9. This enables that by assembling the vibrator system 1 of the invention from a series of individual vibrator 15 blocks 3 the gearwheels of neighbouring vibrator blocks are brought into mutual contact by arranging that these neighbouring gearwheels have intermeshing teeth as shown in Fig. 13. In this Fig. 13 a first gearwheel 9.1 is shown that is provided on at least one axel of a first vibration block and a second gearwheel 20 9.2 is shown that is provided on at least one axel of a second vibration block. For purposes of clarity the said cooperating first and second gearwheels 9.1 and 9.2 are shown in isolation whereby the remainder of the vibrator blocks 3 is not shown. However, it will be clear for the artisan that this first and 25 second gearwheel 9.1 and 9.2 cooperate as a part, for instance of the neighbouring vibrator blocks 3' and 3'' as shown in Fig. 10A and Fig. 10B.

With reference again to Figs. 1-6 it is clear that the individual blocks 3 that may form part of the series of vibra-30 tion blocks have the gearwheels 9 freely accessible from a side of the blocks 3 that is perpendicular to the axels 4 of the concerning blocks 3.

There is a specific requirement for the mechanical connections by the gearwheels 9 that form an integral part of the 35 blocks 3 in order to suit their assembling into a vibrator system 1 as shown in Figs. 7-10, being that the gearwheels 9.1 and 9.2 have teeth that are rounded at the outer circumference of these teeth. This is clearly shown in Fig. 13A showing a top view of the cooperating gearwheels.

40 Finally, reference is made to Fig. 11 and Fig. 12, re spectively, illustrating the flexibility of the vibrating system of the invention.

6

In Fig. 11 different views are shown of a vibrator system 1 of the invention, which in the shown case is assembled from two separate vibrator blocks 3 that are placed in line with each other rather than to follow a particular curvature.

5 In Fig. 12 a further vibrator system 1 of the invention is shown in which the number of individual vibrator blocks is doubled and wherein four vibrator blocks are applied that are placed in line with each other. One thing and another illustrates that contrary to the prior art it is with the vibrator-10 system of the invention very easy to provide same with any desired power, making it easy to answer to any practical circumstance at which an object has to be vibrated into the ground.

Claims

A vibration system (1) for introducing an object (2) into the ground by means of vibration, comprising a series of vibration blocks (3) with. at least a first vibration block 5 (3 ') and a second vibration block (3 "), wherein each block is provided with at least one shaft (4) with at least one rotatable eccentric weight (5,6) for generating a vibration, wherein adjacent blocks are provided with a coupling for synchronizing the eccentric weights of such adjacent blocks, characterized in that the coupling is selected from the group comprising mechanical connecting means which form an integral part of the blocks, and electrical connection means.

Vibration system according to claim 1, wherein each of the blocks comprises at least one electric motor (8) for driving the eccentric weights, characterized in that the at least one electric motor (8) is a stepping motor and that the motors (8) of all blocks (3) are connected to supply lines which have the same phase shift such that said motors run synchronously.

3. Vibration system according to claim 1, wherein each of the blocks comprises a hydraulic or electric motor (7,8) for driving the eccentric weights, characterized in that the at least one axis of the first vibration block (3 ') is provided with a first gear (9), and the at least one axis of the second vibration block (3 ") is provided with a second gear (9), which first and second gear are arranged with interlocking teeth.

4. Vibration system according to claim 1 or 3, characterized in that each block (3, 3 ', 3 ") of the series of vibration blocks has a gear (9.1) which cooperates with a gear (9.2) of an immediately adjacent block (3, 3 ', 3 ").

Vibration system according to claim 1 or 3 or 4, characterized in that each of the blocks (3, 3 ', 3 ") of the series of vibration blocks has at least one gear wheel which is freely accessible from one side in a direction perpendicular on the axis (4) of the relevant block (3, 3 ', 3 ").

Vibration system according to claim 1 or one of claims 3-5, characterized in that each of the blocks (3, 3 ', 40 ") of the series of vibration blocks has at least one gear wheel with teeth rounded to the outer circumference of the teeth.

Vibration block (3) as described as part of a vibration system according to one of claims 1-6.