ADJUSTABLE SLIDING TABLE FOR CONVEYOR BELT AND ITS ASSEMBLY METHOD

Abstract

Adjustable sliding table (1) for a conveyor belt, particularly for a conveyor belt transfer point. The sliding table (1) comprises a structure (2) having aligned beams (5), straightening elements (3) at the ends of the sliding table (1) each comprising a means for adjusting the straightness of the sliding table (1) and a means for attaching said straightening elements (3) to the structure (2), and sliding bars (4) comprising at least one buffer (15) and at least one support (16) suitable for being assembled on the beams (5) of the structure (2) and on the straightening elements (3). Figure for the abbreviation: Fig 1A

Description

Title of the invention: ADJUSTABLE SLIDING TABLE FOR CONVEYOR BELT AND ITS ASSEMBLY PROCESS technical field

[0001] The present invention relates to the damping of a conveyor belt, in particular the damping at the transfer point of a conveyor belt transporting ores and metals.

[0002] A conveyor belt forms a hopper in particular when it discharges the materials it carries onto another conveyor belt, in an area called a transfer point.

[0003] The contents of a conveyor belt can be heavy and include large pieces of ore or metal. Therefore, it is important that the hopper properly cushions the contents of the conveyor belt. The structures supporting the conveyor belt must also allow for efficient belt movement, particularly at the transfer points.

[0004] Today, sliding tables are used to provide satisfactory sliding to the conveyor belt and effective cushioning of the contents of the conveyor belt.

[0005] Sliding tables are large and complicated to maintain and / or replace. A sliding table generally includes shock-absorbing sliding bars. To perform maintenance operations, and in particular to replace the bars, considerable force must be applied to the bars to remove them from the table. Furthermore, when the damping of the conveyor belt is not optimal, its contents lead to faster wear of the belt. Ores and metals can create holes and deformations in the conveyor belt, subsequently reducing its efficiency and causing flow problems in the system.

[0006] This results in additional time and costs during the installation and maintenance of the sliding table. Description of the invention

[0007] The present invention aims to overcome the aforementioned problems and, in particular, to offer a simpler solution for installation and maintenance.

[0008] The invention relates to an adjustable sliding table for a conveyor belt, particularly for a conveyor belt transfer point. The sliding table comprises a structure including aligned beams and straightening elements. the ends of the sliding table each comprising a means for adjusting the straightening of the sliding table and a means for fixing said straightening elements to the structure, and sliding bars comprising at least one buffer and at least one support suitable for being assembled on the beams of the structure and on the straightening elements.

[0009] Advantageously, the sliding bars are positioned perpendicular to the beams of the structure.

[0010] According to one embodiment, the means of fixing the straightening elements to the structure includes a bolt.

[0011] Advantageously, the sliding bars each include a means of fixing the pad to the support.

[0012] According to one embodiment, the means for fixing the pad to the support includes a bolt.

[0013] Advantageously, the means for adjusting the straightening comprises two connecting rods suitable for being fixed in different straightening adjustment holes of the sliding table.

[0014] According to one embodiment, the sliding bars each comprise two buffers and a support.

[0015] Advantageously, each straightening element includes a straightening amplitude of the sliding table of between 10° and 50°, preferably between 30° and 40°.

[0016] The invention also relates to a method for assembling a sliding table as defined above. The method comprises the following steps: - assembly of the sliding bars onto the structural beams, - fixing the straightening elements to the beams by means of the means of fixing the straightening elements to the structure, and - assembly of the sliding bars on the straightening elements.

[0017] According to one embodiment, the method includes a step of adjusting the straightening elements in order to adjust the straightening of the sliding table before fixing the straightening elements on the beams of the structure. Brief description of the drawings

[0018] Other objects, features and advantages of the invention will become apparent from the following description, given solely by way of non-limiting example and made with reference to the accompanying drawings in which:

[0019] - Figure 1A is a perspective view of a sliding table for a belt conveyor;

[0020] - Fig. IB is a perspective view of a partially conveyor belt mounting;

[0021] - Figure [Fig. 2] is a perspective view of a straightening element of a table slippage;

[0022] - Figure [Fig. 3] is a perspective view of a sliding bar of a table slippage;

[0023] - Figure 4 is a top view of a sliding bar of a table slippage;

[0024] - Figure 5 is a side view of a sliding bar of a table slippage; and

[0025] - Figure 6 is a bottom view of a sliding bar of a table slippage. Detailed description

[0026] Figures 1 and 2 show a sliding table 1 for a conveyor belt. In particular, it is a sliding table 1 used at a transfer point between two conveyor belts.

[0027] The sliding table 1 comprises a main structure 2, eight straightening elements 3 of the ends of the sliding table 1 and twelve sliding bars 4.

[0028] The main structure 2 supports the straightening elements 3 at the ends of the sliding table 1 and the sliding bars 4. According to the embodiment illustrated in the figures, the structure 2 comprises four aligned beams 5, preferably aligned parallel to each other. Each beam 5 includes a longitudinal top layer 6 extending laterally from the edges of the beam 5. In particular, the beams comprise a T-shaped profile. The structure 2 of the sliding table 1 advantageously comprises stainless steel.

[0029] The straightening elements 3 are intended to be fixed to the ends of the beams 5. The straightening elements 3 give the conveyor belt a concave profile. According to the embodiment illustrated in the figures, each end 5a, 5b of each beam 5 comprises a straightening element 3. In particular, a first straightening element 3a is fixed to the first end 5a of a beam 5 and a second straightening element 3b is fixed to the second end 5b of a beam 5.

[0030] The sliding bars 4 are intended to be fixed to the beams 5 of the structure 2. According to the embodiment illustrated in the figures, the sliding bars 4 are positioned perpendicular to the beams 5 of the structure 2.

[0031] Figure 2 illustrates a straightening element 3. The straightening element 3 comprises two plates 6a, 6b assembled by a plate assembly means 6a, 6b comprising a pivot joint 7, a straightening adjustment means for the sliding table 1 and a means for fixing said straightening element 3 to the main structure 2 of the sliding table 1, more particularly a means for fixing said straightening element 3 to an end 5a, 5b of the beam 5 of the main structure 2.

[0032] The means for adjusting the straightening of the sliding table 1 comprises two connecting rods 10 adapted to be fixed in different holes 11 for adjusting the straightening of the sliding table 1. Each plate 6a, 6b includes several adjustment holes 11. The first ends of the connecting rods 10a are fixed to a hole 11 of the first plate 6a, and the second ends of the connecting rods 10b are fixed to a hole 11 of the second plate 6b. The connecting rods 10 are fixed to the holes 11 by means of bolts. The choice of the holes 11 determines the straightening range of the sliding table 1. The straightening element 3 provides a straightening range of the sliding table 1 between 10° and 50°, preferably between 30° and 40°.

[0033] According to the embodiment illustrated in the figures, the means for fixing the straightening elements 3 to the structure 2 comprises a rail 12 and two bolts 13. The first plate 6a of the straightening element 3 is curved to form a rail 12 capable of sliding perfectly on the beams 5 of the sliding table 1 and more specifically on the upper layer 6 of the beams 5 of the sliding table 1. In addition, the first plate 6a of the straightening element 3 and the end 5a, 5b of the beam 5 of the structure 2 comprise two holes 14 to accommodate the bolts 13 of the means for fixing the straightening elements 3 to the structure 2.

[0034] Figures 3, 4, 5, and 6 illustrate a sliding bar 4. The sliding bar 4 comprises two pads 15 and a support 16, said pads 15 being assembled onto the support 16 by means of fastening means 17 of the pads 15 to the support 16. The fastening means 17 of the pad 15 to the support 16 comprises two bolts. Each pad 15 has a first thick lower layer 15a fixed to the support 16 comprising rubber and a second thin upper layer 15b comprising Teflon.

[0035] The support 16 advantageously comprises stainless steel. The support 16 further comprises a means for assembling said sliding bar 4 to the beams 5 of the structure 2 or to the straightening elements 3. The means for assembling said sliding bar 4 to the beams 5 of the structure 2 or to the straightening elements 3 comprises four rails 18, each rail 18 being oriented to slide perfectly on the beams 5 of the sliding table 1 and more specifically on the upper layers 6 of the beams 5 of the sliding table 1, or on the straightening elements 3 and more specifically on the second plates 6b of the straightening elements 3. The sliding direction of the rails 18 is thus oriented in the longitudinal direction of the beams 5 of the structure 2.

[0036] According to the embodiment illustrated in the figures, the sliding bar 4 has a length of 1200 millimeters and a width of 120 millimeters. The sliding bar 4 has a height of 133 millimeters. Each buffer 15 has a length of 600 millimeters and a height of 60 millimeters. Each rail 18 has a length of 120 millimeters and a width of 115 millimeters.

[0037] To assemble the sliding table just described, it is necessary, in a first assembly step, to assemble the sliding bars 4 onto the beams 5 of the structure 2. The first step is done by sliding the rails 18 of the first four sliding bars 4 onto the beams 5 of the structure 2.

[0038] The method includes a second step of adjusting the straightening elements 3, in particular adjusting the connecting rods 10 in the holes 11 of the plates 6a, 6b of the straightening elements 3. The choice of the holes 11 for fixing the connecting rods 10 is made according to the desired amplitude of straightening of the sliding table 1.

[0039] Next, the method includes a third step of attaching the eight straightening elements 3 to the beams 5 of the structure 2. Each straightening element 3 is attached to one end 5a, 5b of a beam 5 by means of the fastening means 9 of the straightening elements 3 to the structure 2. The straightening elements 3 thus slide along the beams 5 until they are in contact with the first bars 4 assembled to the beams 5. The straightening elements 3 are then tightened onto the beams 5 by means of the bolts 13 of the fastening means 9 of the straightening elements 3 to the structure 2. The combination of the rail 12 and the bolts 13 of the fastening means 9 of the straightening elements 3 to the structure 2 makes it possible to hold the straightening elements 3 in place on the beams 5.

[0040] Adjusting the amplitude of the straightening of the straightening elements 3 gives a concave profile to the sliding table 1, allowing the contents of the conveyor belt to be collected as best as possible.

[0041] The straightening elements 3 are adjustable at any time, even once mounted on the structure 2, facilitating the use and maintenance operations of the sliding table 1.

[0042] The process finally includes a fourth step of assembling the sliding bars 4 onto the straightening elements 3. The fourth step is done by sliding the rails 18 of the last eight sliding bars 4 onto the straightening elements 3. Each straightening element 3 thus receives four rails 18 of four different sliding bars 4.

[0043] Once assembled, the sliding table 1 helps to cushion the shocks from the contents of the conveyor belt at the transfer points.

[0044] Of course, we do not depart from the scope of the invention when the sliding table 1 presents a different composition. It is therefore possible to design a sliding table 1 with a different number of beams 5, straightening elements 3, and sliding bars 4. A sliding table 1 can also be designed with sliding bars 4 of a different size.

Claims

Demands

1. Adjustable conveyor belt sliding table (1), in particular for conveyor belt transfer point, characterized in that it comprises a structure (2) having aligned beams (5), straightening elements (3) of the ends of the sliding table (1) each comprising a means for adjusting the straightening of the sliding table (1) and a means for fixing (9) said straightening elements (3) to the structure (2), and sliding bars (4) comprising at least one buffer (15) and at least one support (16) suitable for being assembled on the beams (5) of the structure (2) and on the straightening elements (3).

2. Sliding table (1) according to claim 1, in which the sliding bars (4) are positioned perpendicular to the beams (5) of the structure (2).

3. Sliding table (1) according to any one of claims 1 and 2, wherein the means for fixing (9) the straightening elements (3) to the structure (2) comprises a bolt (13).

4. Sliding table (1) according to any one of claims 1 to 3, wherein the sliding bars (4) each comprise a means for fixing the pad (15) to the support (16).

5. Sliding table (1) according to claim 4, wherein the means for fixing the pad (15) to the support (16) includes a bolt (17).

6. Sliding table (1) according to any one of claims 1 to 5, wherein the straightening adjustment means comprises two connecting rods (10) suitable for being fixed in different straightening adjustment holes (11) of the sliding table (1).

7. Sliding table (1) according to any one of claims 1 to 6, wherein the sliding bars (4) each comprise two buffers (15) and a support (16).

8. Sliding table (1) according to any one of claims 1 to 7, wherein each straightening element (3) comprises a straightening amplitude of the sliding table (1) of between 10° and 50°, preferably between 30° and 40°.

9. A method for assembling the sliding table (1) according to any one of claims 1 to 8, characterized in that it comprises the following steps:

10. - assembly of the sliding bars (4) onto the beams (5) of the structure (2), - fixing the straightening elements (3) to the beams (5) by means of the fixing means (9) of the straightening elements (3) to the structure (2), and - assembly of the sliding bars (4) on the straightening elements (3). Method according to claim 9, comprising a step of adjusting the straightening elements (3) in order to adjust the straightening of the sliding table (1) before fixing the straightening elements (3) on the beams (5) of the structure (2).

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