CN201494872U - Long-distance belt conveyor - Google Patents
Long-distance belt conveyor Download PDFInfo
- Publication number
- CN201494872U CN201494872U CN2009203059425U CN200920305942U CN201494872U CN 201494872 U CN201494872 U CN 201494872U CN 2009203059425 U CN2009203059425 U CN 2009203059425U CN 200920305942 U CN200920305942 U CN 200920305942U CN 201494872 U CN201494872 U CN 201494872U
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- Prior art keywords
- belt conveyor
- transfer device
- load
- backhaul
- long belt
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Abstract
The utility model relates to a long-distance belt conveyor which comprises two transmission rollers, a conveying belt enwound on the two transmission rollers, and an upper backhaul bearing structure and a lower backhaul bearing structure which are arranged between the two transmission rollers and support the conveying belt, and a bracket fixed between the upper backhaul bearing structure and the lower backhaul bearing structure. The upper backhaul bearing structure is an upper bearing air chamber and the lower backhaul bearing structure is a lower bearing air chamber. In the utility model, the conveying belt and the lower bearing air chamber of the long-distance belt conveyor have small friction coefficient (only 0.015), and can run under lower friction resistance and at high speed under long distance continuously and stably, thus reducing running cost.
Description
Technical field
The utility model relates to a kind of conveyer, relates in particular to a kind of long belt conveyor, belongs to the mechanical transport field.
Background technology
In the mechanical transport field, the band conveyor tool is one of industrial equipment that arrives commonly used, and especially industry and place all can be used at building materials, chemical industry, mine, harbour, warehouse, station, goods yard, grain distribution station etc., and it is a kind of extensive general-duty conveying machinery.
Air cushion-belt conveyer is the international and domestic new continuous load transfer device that grows up of the eighties, be mainly used in the transportation of bulk material such as sand, stone, coal, iron sand, cement, clay etc., also can be used for the conveying of member such as article such as bagged cement, grain.Its principle of work is: the pressure air from blowing engine enters gas tank, enters between panel and the load-transfer device together with material through the pore on the gas tank panel.Select under the air cushion parameter condition correct, this place can form air cushion, holds up load-transfer device and material.When load-transfer device moves with certain speed, between gas tank panel and load-transfer device lower surface, just form gas friction, the resistance of pull-over gear load-transfer device is greatly reduced, power draw greatly reduces, and energy-saving effect is remarkable.Compare with the carrying roller machine, energy-conservation more than 25%.Secondly, because of resistance is little, and air cushion is continuous along throughput direction, and load-transfer device is stable and do not jolt, so delivery speed can greatly improve, conveying efficiency can be enhanced about more than once.When deviation phenomenon occurs because the air-cushion pressure self-regulation effect, be limited in the belt deflection amount very among a small circle in, general running deviation value only is half of carrying roller machine.Because carrying roller quantity reduces about 90%, maintenance load and corresponding expense reduce more than 60%.
Present Air-cushion Type Belt Conveyer both domestic and external is owing to can't solve down the reasonable air chamber structure and the percent opening of backhaul carrying structure; Load-transfer device at the carrying material uses the air chamber carrying, still adopt carrying roller carrying backhaul load-transfer device in following backhaul, thoroughly do not change the drawback of carrying roller carrying structure, because the vice proper of carrying roller carrying, friction is big, at a high speed incompatible, be difficult to embody the high-revolving characteristics of air cushion conveyer, when long distance is carried, because friction drag is big, tension force to load-transfer device requires height, and the load-transfer device deadweight strengthens, thereby the power consumption of complete machine also increases.
At present, carry the main following method that adopts for realization is long apart from belt both at home and abroad:
Fig. 1 is the structural representation of prior art middle and long distance belt conveyer.As shown in Figure 1, described long belt conveyor comprises two driving drums 3, be surrounded on the load-transfer device 2 on described two driving drums 3 and be arranged between described two driving drums 3 and be positioned at the last backhaul carrying structure and the following backhaul carrying structure of described load-transfer device 2 lower surfaces, the described backhaul carrying structure of going up is a carrying air chamber 4 on, and described backhaul carrying structure down is the following return idler 6 of a plurality of equidistant distributions.Described material 5 is arranged at the upper surface of described load-transfer device 2.Described return idler 6 down is bigger with the friction coefficient of load-transfer device 2, be 0.03, not only increased the operation total drag of equipment, increased energy consumption, and return idler 6 maximum speed of revolutions are no more than 20 revolution per seconds down, have seriously restricted the high-speed cruising of conveyer, when long distance is carried, the carrying roller fault frequently occurs, and cycle repair and replacement carrying roller causes operating cost higher.
The utility model content
The utility model provides a kind of long belt conveyor at existing long belt conveyor above shortcomings.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of long belt conveyor, comprise two driving drums, be surrounded on load-transfer device on described two driving drums, be arranged between described two driving drums and support the last backhaul carrying structure and the following backhaul carrying structure of described load-transfer device and be fixed in the described support of going up between backhaul carrying structure and the following backhaul carrying structure, described upward backhaul carrying structure is to carry air chamber on one, and described backhaul carrying structure down is for carrying air chamber once.
The beneficial effects of the utility model are:
1) owing to the variation of backhaul carrying structure down, the frictional property of load-transfer device become by the pivoting friction of original and carrying roller and air chamber between the flow friction of air, reduced the operation total drag, also reduced the tension force requirement of belt, make like this and select for use the load-transfer device of inferior grade intensity to become possibility, reduced the expense of load-transfer device.
2) owing to reduced the tension force that load-transfer device bore, therefore, can increase the length of load-transfer device to greatest extent, for long belt conveyor provides advantage.
3) can realize high-speed cruising and since the rotating speed of carrying roller more the high life low more, can not adapt to high-speed cruising, changed carrying structure after, can realize the high-speed cruising of air cushion conveyor.
4) reduce operating cost, because the operation total drag reduces, energy consumption reduces, and has saved the operation expense that the maintenance of carrying roller supporting construction middle idler roller brings simultaneously.
5) down in the carrying air chamber supporting construction because cushion slot is an arc line type, the function at automatically regulating center is arranged, so belt conveyer in operational process, is difficult for sideslip, safe and reliable to operation.
The friction coefficient of load-transfer device and following carrying air chamber is less in the utility model long belt conveyor, only is 0.015, can be under long distance, and at full speed continual and steady and moving hanging down under the friction drag, thus reduced operating cost.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described carrying air chamber down is connected with a blowing engine.
Further, described carrying air chamber down has a cushion slot near the surface of described load-transfer device, and the cross section of described cushion slot is a circular arc.
Further, the radian in described cushion slot cross section and the radian in load-transfer device cross section are complementary.
Further, the angle of the circular arc in described cushion slot cross section is 20 °～120 °.
Further, the surface of described cushion slot is provided with cutoff port, and described cutoff port is interspersed, and four adjacent cutoff ports constitute a rhombus.
Further, the percent opening of the lip-deep cutoff port of described cushion slot on the direction vertical with described load-transfer device, diminishes gradually from two side direction middle part.
Further, the percent opening of both sides, described cushion slot surface is 1.5 times～3 times of middle part percent opening.
Further, the pore size of described cutoff port is 2 millimeters～5 millimeters.
Further, described cushion slot surface throttle hole is along on the direction of transfer of described load-transfer device being equidistant the distribution, spacing size between the center, adjacent two cutoff port holes is 20 millimeters～200 millimeters, institute cushion slot surface throttle hole along with the vertical direction of described load-transfer device on be that unequal-interval distributes.
Description of drawings
Fig. 1 is the structural representation of prior art middle and long distance belt conveyer;
Fig. 2 is the structural representation of the utility model long belt conveyor;
Fig. 3 is the cross-sectional view of Fig. 1 along the A-A direction;
Fig. 4 is the utility model cushion slot arc chord angle scheme drawing;
Fig. 5 is the distribution schematic diagram in the utility model cushion slot surface throttle hole;
In the accompanying drawing, the list of parts of each label representative is as follows:
1, following carrying air chamber, 2, load-transfer device, 3, driving drum, 4, on carry air chamber, 5, material, 6, carrying roller, 7, support, 8, cutoff port, 9, rhombus.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
Fig. 2 is the structural representation of the utility model long belt conveyor, and Fig. 3 is the cross-sectional view of Fig. 1 along the A-A direction.As shown in Figures 2 and 3, described long belt conveyor comprises two driving drums 3, be surrounded on load-transfer device 2 on described two driving drums 3, be arranged between described two driving drums 2 and support the last backhaul carrying structure and the following backhaul carrying structure of described load-transfer device 2 and be fixed in the described support of going up between backhaul carrying structure and the following backhaul carrying structure 7, the described backhaul carrying structure of going up is a carrying air chamber 4 on, and described backhaul carrying structure down is for carrying air chamber 1 once.Described material 5 is arranged at the upper surface of described load-transfer device 2.Described down carrying air chamber 1 is connected with a blowing engine, under carry air chamber 1 air feed.
The computing formula of described blowing engine pressure P is as follows:
P＝K
1gq
0/(ab)
Wherein, K
1Be reserve factor, can be 1.6～1.8; G is an acceleration due to gravity, is 9.807m/s
2, q
0Be every meter length load-transfer device weight, unit is kg/m; Ab is the chord length of the load-transfer device on cushion slot.
Described carrying air chamber 1 down has a cushion slot near the surface of described load-transfer device 2, and the cross section of described cushion slot is a circular arc.The radian in the radian in described cushion slot cross section and load-transfer device 2 cross sections is complementary.Fig. 4 is the utility model cushion slot arc chord angle scheme drawing.As shown in Figure 4, the angle [alpha] of the circular arc in described cushion slot cross section is 20 °～120 °.The surface of described cushion slot is provided with cutoff port 8, and the gas that is ejected by cutoff port has formed uniform air cushion between described load-transfer device 2 and following carrying air chamber 1, and air cushion can carry and described carrying air chamber 1 corresponding load-transfer device 2 down.
Fig. 5 is the distribution schematic diagram in the utility model cushion slot surface throttle hole.As shown in Figure 5, the percent opening of the lip-deep cutoff port 8 of described cushion slot along on the direction vertical with described load-transfer device 2, diminishes gradually from two side direction middle part.The percent opening of both sides, described cushion slot surface is 1.5 times～3 times of middle part percent opening.Described percent opening is the area of all cutoff ports on the cushion slot surface unit area, as as described in calculating on the one sq m area of cushion slot surface, what cutoff ports are arranged, and the area sum of calculating these cutoff ports again is again divided by the cushion slot skin area of a sq m.Described cushion slot surface throttle hole 8 is along being equidistantly to distribute on the direction of transfer of described load-transfer device 2, and the spacing size between the center, adjacent two cutoff port 8 holes is 20 millimeters～200 millimeters.Institute cushion slot surface throttle hole 8 along with the vertical direction of described load-transfer device 2 on be that unequal-interval distributes.Promptly along on the Y direction, the distance between adjacent two cutoff ports 8 is the value of determining, along on the X-direction, the distance between adjacent two cutoff ports 8 is the value that changes.The pore size of described cutoff port 8 is 2 millimeters～5 millimeters.The described aperture that is positioned at cushion slot surface middle part cutoff port 8 is littler than the aperture that is positioned at the surperficial both sides of cushion slot cutoff port 8.Described cutoff port 8 is for being interspersed, promptly constitute rhombus 9 be along adjacent two cutoff ports 8 of Y direction with along two adjacent cutoff ports 8 of X-direction and described two cutoff ports 8, air-flow produces stable air cushion like the ripples line thereby can help like this forming.In the present embodiment, along on the Y direction, the distance between the center, adjacent two cutoff port 8 holes, the middle part on described cushion slot surface is 100 millimeters, and the distance except that the middle part on described cushion slot surface between the center, adjacent two cutoff port 8 holes is 50 millimeters.The described pore size that is positioned at middle part, cushion slot surface cutoff port 8 is 2 millimeters, and the pore size that is positioned at both sides, cushion slot surface cutoff port 8 is 3 millimeters.
Be appreciated that if load-transfer device is longer, can be with a plurality of described carrying air chambers down by being welded together.
The utility model is the carrying air chamber structure under backhaul place is provided with down, can demonstrate fully the advantage of air cushion-belt conveyer, the friction of air chamber and load-transfer device is littler, thereby reduced the suffered maximum tension of load-transfer device at places, belt conveyer two ends, can the load-transfer device making is longer, freight volume is bigger, the link of parallel roll in the middle of can reducing simultaneously, reduced the maintenance failure rate of complete machine, reduction equipment and operating cost.
Be appreciated that, following carrying air chamber in the utility model can be used as the following backhaul carrying structure of non-air-cushion type belt conveyer, the described air chamber structure of carrying down also can mix use with the carrying structure of carrying roller, for the belt conveyer of high-speed operation, the following backhaul between can the driving drum of at both ends uses the structure of air chamber carrying can realize the purpose of this utility model.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. long belt conveyor, comprise two driving drums (3), be surrounded on load-transfer device (2) on described two driving drums (3), be arranged between described two driving drums (2) and support the last backhaul carrying structure and the following backhaul carrying structure of described load-transfer device (2) and be fixed in the described support of going up between backhaul carrying structure and the following backhaul carrying structure (7), it is characterized in that, described upward backhaul carrying structure is to carry air chamber (4) on one, and described backhaul carrying structure down is for carrying air chamber (1) once.
2. long belt conveyor according to claim 1 is characterized in that, described carrying air chamber (1) down is connected with a blowing engine.
3. long belt conveyor according to claim 2 is characterized in that, described carrying air chamber (1) down has a cushion slot near the surface of described load-transfer device (2), and the cross section of described cushion slot is a circular arc.
4. long belt conveyor according to claim 3 is characterized in that, the radian in the radian in described cushion slot cross section and load-transfer device (2) cross section is complementary.
5. long belt conveyor according to claim 4 is characterized in that, the angle of the circular arc in described cushion slot cross section is 20 °～120 °.
6. long belt conveyor according to claim 5 is characterized in that, the surface of described cushion slot is provided with cutoff port (8), and described cutoff port (8) is interspersed, and adjacent four cutoff ports (8) constitute a rhombus (9).
7. long belt conveyor according to claim 6 is characterized in that, the percent opening of the lip-deep cutoff port of described cushion slot (8) on the direction vertical with described load-transfer device (2), diminishes gradually from two side direction middle part.
8. long belt conveyor according to claim 7 is characterized in that, the percent opening of both sides, described cushion slot surface is 1.5 times～3 times of middle part percent opening.
9. according to arbitrary described long belt conveyor in the claim 6 to 8, it is characterized in that the pore size of described cutoff port (8) is 2 millimeters～5 millimeters.
10. according to arbitrary described long belt conveyor in the claim 6 to 8, it is characterized in that, described cushion slot surface throttle hole (8) is along on the direction of transfer of described load-transfer device (2) being equidistant the distribution, spacing size between adjacent two cutoff ports (8) center, hole is 20 millimeters～200 millimeters, institute cushion slot surface throttle hole (8) along with the vertical direction of described load-transfer device (2) on be that unequal-interval distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203059425U CN201494872U (en) | 2009-07-10 | 2009-07-10 | Long-distance belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203059425U CN201494872U (en) | 2009-07-10 | 2009-07-10 | Long-distance belt conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201494872U true CN201494872U (en) | 2010-06-02 |
Family
ID=42438080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203059425U Expired - Lifetime CN201494872U (en) | 2009-07-10 | 2009-07-10 | Long-distance belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201494872U (en) |
-
2009
- 2009-07-10 CN CN2009203059425U patent/CN201494872U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100602 |