A V-shaped air cushion conveyor

Abstract

A V-shaped air cushion conveyor, characterized in that it includes a head assembly, a middle section assembly, and a tail assembly connected in sequence, wherein the head assembly, the middle section assembly, and the tail assembly are respectively provided with air chambers that are sealed and connected to each other, and a throttle hole is provided on the top of the air chamber; the air chamber of the middle section assembly is composed of a disc groove plate on the top and a V-shaped bottom plate to form a V-shaped structure, and the surface of the disc groove plate is a downwardly concave arc structure. The beneficial effects of the present invention are as follows: the original roller rolling friction is changed to fluid friction with air as the medium, which greatly reduces the energy consumption of the equipment; during the operation project, the conveyor belt always runs forward stably, and the material loading capacity is high; the conveyor belt does not deviate, does not wear, and has a long service life; there is no hidden danger of roller damage, and the failure point is reduced, the maintenance frequency is reduced, the number of spare parts is reduced, and the maintenance cost is greatly reduced.

Description

Technical Field

[0001] The invention relates to a V-shaped air cushion conveyor, which is suitable for the technical field of long-distance conveying of powdery, granular and small block bulk materials. Background Art

[0002] Roller belt conveyor (hereinafter referred to as roller belt conveyor) is a common general-purpose conveying equipment on the market. It is mainly used for long-distance transportation. It is composed of a single machine or multiple machines to form a conveying system. It is used for horizontal or a certain range of inclined angle transportation of powdery, granular and small block materials. It is widely used in grain, coal, electric power, metallurgy, chemical industry, machinery, light industry and ports and other industries.

[0003] At present, there are several prominent problems in the use of roller belt conveyors:

[0004] 1) There are a huge number of roller groups, many failure points (roller bearing damage, roller wear, etc.), and high maintenance costs;

[0005] 2) This type of belt conveyor is usually used in an open or semi-open type. The load-bearing section cannot be completely sealed, and cannot be fundamentally rainproof and dust-suppressing.

[0006] 3) During the operation of the roller belt conveyor, the conveyor belt runs forward in a wave-like manner, the material is severely bumpy, the belt deviates, wears greatly, and has a short service life. Summary of the invention

[0007] The purpose of the present invention is to provide a V-shaped air cushion conveyor in view of the above-mentioned deficiencies in the prior art.

[0008] The objective of the present invention is achieved through the following technical solutions:

[0009] A V-shaped air cushion conveyor, characterized in that the middle section component of the conveyor, its air chamber is composed of a disc groove plate on the top and a V-shaped bottom plate to form a V-shaped structure, and the surface of the disc groove plate is a downwardly concave arc structure; a support frame assembly is provided at the bottom of the middle section component, and a disc groove bracket assembly matching the V-shaped bottom plate is provided on the support frame assembly, and the disc groove bracket assembly is provided with a V-shaped mounting port matching the V-shaped bottom plate to facilitate supporting the V-shaped bottom plate of the air chamber.

[0010] Preferably, a cover plate or a covering belt structure is provided on the top of the air chamber of the middle section assembly.

[0011] Preferably, the covering belt structure includes flexible shielding surfaces on left and right sides, a supporting frame and a counterweight structure. The flexible shielding surfaces are connected to the conveyor frame through the supporting frame. The counterweight structure is respectively placed on the flexible shielding surfaces on the left and right sides. Under the action of gravity, the counterweight structure makes the flexible shielding surfaces on both sides close at the joint.

[0012] Preferably, a transition section assembly is provided between the middle section assembly and the head assembly and the tail assembly, and the transition section assembly includes a transition air chamber, one end of which is connected to the middle section of the air cushion machine, and the other end is connected to the head or the tail; the transition air chamber includes a disc groove plate with a throttle hole arranged on the top thereof, and the surface of the disc groove plate is smoothly transitioned from a downwardly concave arc surface at one end to a plane structure at the other end; one end of the arc surface of the disc groove plate is connected to the middle section of the air cushion machine, and one end of the plane structure is connected to the head or the tail.

[0013] Preferably, the width of the disc groove plate of the transition air chamber gradually increases from one end of the arc surface to the other end of the plane structure, and the disc groove plate is arranged to be inclined upward, and one end of the disc groove plate plane structure is higher than one end of its arc surface.

[0014] Preferably, the head assembly includes a head shell, which is provided with a material input end and a material output port, and a roller for redirecting the conveyor belt is provided at the material input end of the head shell, and a material gathering structure is provided in the head shell, and the material gathering structure includes a movable material baffle plate, a material baffle plate adjustment shaft, and a locking nut; the movable material baffle plate is an arc-shaped plate, and is arranged in the cavity of the head shell, with its inner arc surface facing the roller; the upper part of the outer arc surface of the movable material baffle plate is rotatably connected to the side wall of the head shell, and the lower part of the outer arc surface of the movable material baffle plate is rotatably connected to one end of the material baffle plate adjustment shaft, and the other end of the material baffle plate adjustment shaft passes through the outside of the head shell and is threadedly connected to the locking nut.

[0015] Preferably, a tensioning mechanism is provided at the tail of the conveyor, and the tensioning mechanism includes a supporting frame and two hydraulic cylinders. The conveyor tail is placed in the supporting frame, and a pair of horizontally arranged and parallel beams are respectively provided on both sides of the supporting frame; the rotating shaft of the conveyor tail roller, its two ends respectively pass through the tail shell body, and are installed between the corresponding pair of beams through bearings, and the two side walls of the tail shell body are respectively provided with strip slide grooves for horizontal displacement of the rotating shaft; a hydraulic cylinder is arranged at each end of the tail roller shaft, and the hydraulic cylinder is horizontally installed between a pair of beams, and its telescopic end is connected to the outer seat of the bearing at the end of the roller shaft; the bearings at both ends of the rotating shaft are respectively supported by two hydraulic cylinders, so that the conveyor belt is in a tensioned state.

[0016] In the present invention, the air chamber bottom plate of the middle section assembly is designed to be a V-shaped structure, which is convenient for replacement with the existing roller-type belt conveyor. At the installation site of the existing belt conveyor, the upper roller is removed and replaced with a V-shaped air chamber and disc groove bracket assembly with a similar appearance.

[0017] When the air source (the equipment comes with a blower system) provides air with a certain pressure and flow rate to the air chamber, the air in the air chamber overflows through the throttle hole on the disc groove, forming a layer of air film (called air cushion) with a certain pressure between the conveyor belt (upper side belt) and the disc groove, supporting the conveyor belt and the material on it. When the main power of the head rotates, it drives the conveyor belt to slide on the air film to realize the transportation of materials. In this way, the rolling friction of the original roller belt conveyor is changed to fluid friction with air as the medium, which reduces the running resistance and brings many advantages. The present invention is suitable for all application fields of the original roller belt conveyor; it is particularly suitable for the transformation of the original roller belt conveyor, and has the advantages of low transformation cost and short cycle.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1) The original roller rolling friction is changed to fluid friction with air as the medium, which reduces the running resistance of the equipment and the energy consumption of the main engine;

[0020] 2) During the operation, the air cushion conveyor belt always runs forward stably with high carrying capacity; the conveyor belt does not deviate or wear out, and has a long service life;

[0021] 3) The air cushion machine has no hidden danger of roller damage, few failure points, low maintenance frequency, and basically no spare parts, which greatly reduces maintenance costs;

[0022] 4) The structure is simple and reliable, can prevent rain and suppress dust, and has strong environmental adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention (cover plate structure);

[0024] Figure 2 It is a schematic diagram of the structure of the present invention (covering belt structure);

[0025] Figure 3 It is a schematic diagram of the air chamber structure of the middle section assembly of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the support frame assembly and the disc slot bracket assembly at the bottom of the middle section assembly of the present invention;

[0027] Figure 5 is a schematic diagram of the cover tape structure of the present invention;

[0028] Figure 6 for Figure 5 Side view of

[0029] Figure 7 for Figure 6 Enlarged view of middle part I;

[0030] Figure 8It is a schematic diagram of the covering belt structure of the present invention (with rainproof structure);

[0031] Fig. 9 for Figure 8 Enlarged view of middle part II;

[0032] Fig.10 for Figure 8 Side view of

[0033] Fig.11 for Fig.10 Enlarged view of middle part III;

[0034] Fig.12 It is a structural schematic diagram of the transition section assembly in the present invention;

[0035] Fig.13 for Fig.12 Schematic diagram of the structure after removing the transition cover;

[0036] Fig.14 for Fig.12 Side view of

[0037] Fig.15 , 16 It is an external schematic diagram of the head aggregate structure of the present invention;

[0038] Fig.17 It is a cross-sectional view of the head aggregate structure of the present invention;

[0039] Fig.18 , 19 It is a structural schematic diagram of the movable material baffle plate of the present invention;

[0040] Fig. 20 , 21 It is a schematic diagram of the tail tensioning structure of the present invention;

[0041] Fig. 22 for Fig. 20 Internal schematic diagram of

[0042] Fig.23 for Fig. 20 A partial enlarged view of

[0043] In the figure: 1 head assembly, 2 middle section assembly, 3 tail assembly, 4 throttle hole, 5 air chamber, 6 disc groove plate of middle section assembly, 7 V-shaped bottom plate, 8 lower roller, 9 support frame assembly, 10 disc groove bracket assembly, 11 V-shaped mounting port, 12 cover plate of middle section assembly, 13 cover belt, 14 fan system;

[0044] 15 flexible shielding surface, 16 inner lining plate, 17 through-pressing plate, 18 counterweight plate, 19 counterweight plate supporting plate, 20 counterweight plate body, 21 bending portion of counterweight plate, 22 counterweight block, 23 rain shield, 24 press plate, 25 pressing portion, 26 rain shield;

[0045] 27 transition section assembly, 28 transition air chamber, 29 transition air chamber disc groove plate, 30 arc surface end of transition air chamber disc groove plate, 31 plane structure end of transition air chamber disc groove plate, 32 transition cover plate, 33 V-shaped surface end of transition cover plate, 34 plane structure end of transition cover plate;

[0046] 35 machine head housing, 36 material inlet end, 37 material outlet, 38 movable baffle plate, 39 baffle plate adjustment shaft, 40 locking nut, 41 fixed lifting ear, 42 baffle plate support shaft, 43 bearing, 44 baffle plate of movable baffle plate, 45 roller, 46 adjustment lifting ear, 47 observation door;

[0047] 48 support frame, 49 hydraulic cylinder, 50 hydraulic cylinder, 51 crossbeam, 52 rotating shaft, 53 bearing outer seat, 54 strip slide, 55 connecting piece, 56 slot, 57 tail casing. DETAILED DESCRIPTION

[0048] Example 1

[0049] like Figure 1-4 As shown, a V-shaped air cushion conveyor includes a head assembly 1, a middle section assembly 2, and a tail assembly 3 which are connected in sequence. The head assembly, the middle section assembly, and the tail assembly are respectively provided with air chambers which are sealed and connected to each other, and a throttle hole 4 is provided on the top of the air chamber.

[0050] The air chamber 5 of the middle section assembly is formed into a V-shaped structure by a disc groove plate 6 at the top and a V-shaped bottom plate 7, and the surface of the disc groove plate 6 is an arc-shaped structure that is concave downward.

[0051] A support frame assembly 9 with a lower roller 8 is provided at the bottom of the middle section assembly, and a disc slot bracket assembly 10 matching the V-shaped bottom plate is provided on the support frame assembly, and the disc slot bracket assembly is provided with a V-shaped mounting port 11 matching the V-shaped bottom plate to facilitate supporting the V-shaped bottom plate of the air chamber. A cover plate 12 or a covering belt 13 structure is provided on the top of the air chamber of the middle section assembly.

[0052] The air chamber bottom plate of the middle section assembly is designed to be a V-shaped structure, which is convenient for replacement with the existing roller-type belt conveyor. At the installation site of the existing belt conveyor, the rollers are removed and replaced with a V-shaped air chamber with a similar appearance.

[0053] The conveyor belt includes an upper side belt and a lower side belt. The air chamber is used to support the upper side belt, and the lower roller is used to support the lower side belt. When the air source (the equipment comes with a fan system 14) provides air with a certain pressure and flow rate to the air chamber, the air in the air chamber overflows through the throttle hole on the disc groove, and a layer of air film with a certain pressure (called an air cushion) is formed between the conveyor belt (upper side belt) and the disc groove to support the conveyor belt and the material on it. When the main driving force of the head rotates, it drives the conveyor belt to slide on the air film to realize the transportation of materials; the lower side belt of the conveyor belt contacts the lower roller. In this way, the rolling friction of the original roller belt conveyor is changed to fluid friction with air as the medium, which reduces the running resistance and brings many advantages.

[0054] Example 2

[0055] Based on Example 1, the covering belt structure of the middle section assembly is improved.

[0056] like Figure 5-7 As shown, the covering belt structure includes flexible shielding surfaces 15 on left and right sides, a supporting frame and a counterweight structure. The flexible shielding surfaces are connected to the conveyor frame through the supporting frame. The counterweight structures are respectively placed on the flexible shielding surfaces on the left and right sides. Under the action of gravity, the counterweight structure makes the flexible shielding surfaces on both sides close at the joint.

[0057] The supporting frame includes an inner lining plate 16 and a pressure plate 17 arranged along the length direction of the flexible shielding surface. The side edges of the inner lining plate are fixedly connected to the conveyor frame. The bottom edge of the flexible shielding surface is covered on the corresponding inner lining plate. The pressure plate is pressed on the flexible shielding surface and cooperates with the inner lining plate to clamp and fix the corresponding flexible shielding surface.

[0058] The counterweight structure includes a plurality of counterweight plates 18 and a counterweight plate support plate 19 arranged at intervals. The counterweight plate is composed of a counterweight plate body 20 and a bent portion 21 arranged at the end of the counterweight plate body. The counterweight plate is arranged along the width direction of the flexible shielding surface, and the bent portion of the counterweight plate extends to the top edge of the flexible shielding surface. The counterweight plate body and the counterweight plate support plate are arranged in pairs to clamp and fix the corresponding flexible shielding surface together. The positions of the counterweight plates on the left and right sides correspond, and the two bent portions at the corresponding positions press the top edges of the flexible shielding surfaces on both sides. A counterweight block 22 is arranged on the counterweight plate, and the counterweight block is arranged slightly upward.

[0059] like Figure 8-11 As shown, a rain shield structure is provided at the joint of the left and right flexible shielding surfaces, and the rain shield structure includes a rain shield plate 23 and a pressure plate 24; the pressure plate is arranged along the length direction of the top edge of one of the flexible shielding surfaces, and the bending part of the counterweight block at the corresponding position presses and fixes the pressure plate; the rain shield plate includes a pressing part 25 and a rain shield part 26, and the pressing part is arranged along the length direction of the top edge of the other flexible shielding surface and corresponds to the position of the pressure plate, and the rain shield part is placed above the joint of the two flexible shielding surfaces. The rain shield plate and the pressure plate are segmented structures arranged in pairs.

[0060] The covering belt structure fixes the corresponding shielding surface on the sheet metal (frame) in the middle section of the conveyor through the inner lining plate and the pressure plate. The top joint of the left and right shielding surfaces is fixed and pressed by the bent part of the counterweight plate through screws. When the ship docks at the shore, the feed port is inserted into the top joint of the left and right shielding surfaces. The position of the feed port can be moved according to the distance of the ship docking. The moving direction is along the normal direction of the covering belt. After the movement, the shielding surface of the track part can be automatically closed due to the counterweight structure, and a rain shield is added to prevent rain.

[0061] The covering belt structure solves the problem of fixing the position of the feed port of the existing cover plate structure, has a simple and reliable structure, can prevent rain and suppress dust, and has strong environmental adaptability.

[0062] Example 3

[0063] On the basis of Embodiment 1 or 2, a transition section assembly 27 is added between the middle section assembly and the nose assembly and the tail assembly.

[0064] like Figure 12-14 As shown, a single-chamber air cushion machine is used, and the transition section assembly includes a transition air chamber 28, one end of which is connected to the middle section of the air cushion machine by a flange seal, and the other end is connected to the head or tail of the machine by a flange seal. The transition air chamber includes a disc groove plate 29 with a throttle hole 4 arranged on the top thereof, and the surface of the disc groove plate is smoothly transitioned from a curved surface 30 with a downward concave end to a plane structure 31 at the other end; one end of the curved surface of the disc groove plate is connected to the middle section of the air cushion machine, and one end of the plane structure is connected to the head or tail of the machine. The width of the disc groove plate gradually increases from one end of the curved surface to the other end of the plane structure, and the disc groove plate is arranged to tilt upward, and one end of the disc groove plate plane structure is higher than one end of its curved surface.

[0065] A transition cover plate 32 is provided on the top of the disc groove plate, and the surface of the transition cover plate is smoothly transitioned from a V-shaped surface 33 convex upward at one end to a plane structure 34 at the other end, and its width gradually increases from one end of the arc surface to the other end of the plane structure; one end of the arc surface of the transition cover plate is connected to the middle section of the air cushion machine, and one end of the plane structure is connected to the head or tail of the machine.

[0066] A lower roller support frame with several lower rollers is arranged at the bottom of the transition air chamber. The length and height of the lower rollers are adapted to the size change of the disc groove plate, and gradually become longer and higher from the end connected to the middle section of the air cushion machine to the end connected to the tail of the machine. When in use, the transition air chamber is used to support the upper side belt of the conveyor belt, and the lower rollers are used to support the lower side belt of the conveyor belt.

[0067] Normally, the disc groove of the air cushion machine is designed to be "U"-shaped to load as much material as possible, while the redirecting rollers at the head and tail are all "U"-shaped. The transition air chamber can realize the conversion of the conveyor belt between "U" and "U" shapes, and the throttle holes are opened on the disc groove plate according to a certain pattern, and the transition air chamber is connected to the conveying section air chamber. When working, the transition air chamber and the conveying section air chamber maintain the same gas pressure, and the air flow is discharged from the throttle hole to form an air film to support the conveyor belt. The conveyor belt slides on the air film and completes the forming conversion at the same time.

[0068] The conveyor belt has contoured transition (i.e. the transition air chamber disc groove plate is arranged obliquely, the height gradually increases, and the width gradually changes and the surface of the smooth transition constitutes a contoured transition), with no contact wear, no local extension, and extended belt service life; the material flow is more stable, without the risk of leakage or spillage.

[0069] Example 4

[0070] On the basis of Embodiment 1, 2 or 3, a head material gathering structure is added to the head assembly.

[0071] ,like Figure 15-19 As shown, the head material gathering structure includes a head shell 35 and a material gathering structure. The head shell is provided with a material inlet end 36 and a material outlet 37, and is a shell with a cavity formed by connecting an upper shield assembly and a lower shield assembly. A roller 45 for redirecting the conveyor belt is provided at the material inlet end of the head shell. The material gathering structure includes a movable baffle plate 38, a baffle plate adjustment shaft 39, and a locking nut 40.

[0072] The movable baffle plate is an arc plate and is arranged in the cavity of the head housing, with its inner arc surface facing the incoming material end, and its two side walls are respectively provided with baffles 44. The inner arc surface of one end of the movable baffle plate faces the incoming material end, and the other end extends to the discharge port.

[0073] The upper part of the outer side of the movable baffle plate is provided with a fixed lifting lug 41, which is rotatably connected to the side wall of the head housing through the baffle plate support shaft 42. The two ends of the baffle plate support shaft are connected to the side wall of the head housing through bearings 43.

[0074] The lower part of the outer side of the movable baffle plate is provided with an adjusting lug 46, and one end of the baffle plate adjusting shaft is rotatably connected with the adjusting lug. The other end of the baffle plate adjusting shaft passes out of the machine head housing and is threadedly connected with a locking nut.

[0075] The machine head housing is also provided with an observation door 47 for observing the internal working conditions of the machine head housing. In particular, an observation door for observing the position of the movable baffle plate can be arranged on the side wall of the machine head housing.

[0076] When in use, the material is thrown out from the conveyor belt and enters the head material gathering structure of the present invention before it is dispersed, forming a material column that falls along the curved surface of the head material gathering structure (along the inner curved surface of the arc-shaped baffle plate) to the discharge port. The material receiving angle of the movable baffle plate can be adjusted according to the characteristics of the material and the belt speed. The specific operation method is: loosen the locking nut, pull the movable baffle plate through the baffle plate adjustment shaft, make the movable baffle plate to a suitable angle, and fix the baffle plate adjustment shaft through the locking nut.

[0077] The head material gathering structure is suitable for all belt conveyor head discharging, and its beneficial effects are as follows:

[0078] 1) Optimize the head structure size of the belt conveyor, which is beneficial to the overall layout of the equipment and reduces the equipment cost;

[0079] 2) Gather the materials thrown from the conveyor belt into a continuous column to reduce dust concentration;

[0080] 3) The thrown materials are gathered through the gathering structure to form a continuous material column, which avoids the impact of materials on other parts of the machine head, reduces wear and reduces the material breakage rate;

[0081] 4) The structure is simple and reliable, and the collection angle can be adjusted according to the characteristics of the material;

[0082] 5) Materials are collected internally, and no external collection bucket is required during installation, saving installation space.

[0083] Example 5

[0084] Based on Embodiment 1, 2, 3 or 4, a tail tensioning structure is added to the tail assembly.

[0085] The tail tensioning structure includes a support frame 48, two hydraulic cylinders 49, and a hydraulic tank 50 connected to the hydraulic cylinders (providing a power source for the hydraulic cylinders), and the tail of the aircraft is placed in the support frame.

[0086] A pair of horizontally arranged and mutually parallel beams 51 are respectively provided on the two sides of the support frame. The two ends of the rotating shaft 52 of the conveyor belt at the tail pass through the tail housing 57 respectively and are installed between the corresponding pair of beams through bearings. The two side walls of the tail housing are respectively provided with strip slide grooves 54 for horizontal displacement of the rotating shaft.

[0087] A pair of cross beams is equipped with a hydraulic cylinder, which is horizontally installed between the pair of cross beams, and its telescopic end is connected to the corresponding bearing outer seat 53.

[0088] The output shaft of the hydraulic cylinder is connected to the outer ring of the bearing at the corresponding position through a connecting piece 55. The upper and lower ends of the connecting piece are respectively provided with a clamping groove 56. The clamping groove is a U-shaped structure, which is convenient for the corresponding crossbeam to be placed and slided.

[0089] The present invention uses two hydraulic cylinders to respectively support the bearing outer seats at both ends of the tail drum shaft, so that the conveyor belt is always in a tensioned state. When the conveyor belt is loose, the hydraulic cylinder automatically compensates and drives the shaft to move backward along the strip slide groove to tension the conveyor belt.

[0090] Before the equipment is turned on, start the hydraulic system, the hydraulic cylinder works, and its telescopic end drives the connector, which slides between the two beams through its slot. The front end of the connector drives the corresponding bearing outer seat forward, and then drives the roller shaft to slide forward in the strip chute to achieve conveyor belt tensioning. After the conveyor belt is extended, the hydraulic cylinder automatically compensates for the extension stroke, so that the conveyor belt is always in a tensioned state to ensure the normal operation of the belt conveyor. The length of the strip chute on both sides of the tail shell determines the conveyor belt tensioning stroke. After the equipment is shut down, the hydraulic system stops working, the hydraulic cylinder is recovered, and the conveyor belt is relaxed to avoid forced extension in a non-working state.

[0091] Example 6

[0092] A V-shaped air cushion conveyor is equipped with the middle section assembly, head assembly, tail assembly, transition section assembly, head material gathering structure, tail tensioning mechanism, and covering belt structure of the above structure, and its working method is as follows:

[0093] 1) When the material enters the head assembly

[0094] The material is thrown out from the conveyor belt and enters the head material gathering structure before it scatters, forming a material column that falls along the curved surface of the head material gathering structure (along the inner curved surface of the arc-shaped baffle plate) to the discharge port of the head housing. The material receiving angle of the movable baffle plate can be adjusted according to the characteristics of the material and the belt speed. The specific operation method is: loosen the locking nut, pull the movable baffle plate through the baffle plate adjustment shaft to make the movable baffle plate to a suitable angle, and fix the baffle plate adjustment shaft through the locking nut.

[0095] 2) The material enters the middle section assembly from the die assembly (i.e., through the die transition air chamber)

[0096] During operation, the transition air chamber and the conveying section air chamber maintain the same gas pressure, and the air flow is discharged from the throttle hole to form an air film to support the conveyor belt. The conveyor belt slides on the air film and completes the molding conversion at the same time.

[0097] The conveyor belt contour transition (i.e. the transition air chamber disc groove plate is arranged obliquely, the height gradually increases, and the width gradient and the smooth transition surface constitute a contour transition). The transition air chamber can realize the conversion of the conveyor belt between "I" type (head redirection roller) and "U" type (middle conveying section), and throttling holes are opened on the disc groove plate according to a certain pattern, and the transition air chamber is connected to the air chamber of the middle section component.

[0098] 3) Materials enter the middle section components

[0099] When the ship docks at the shore, the feed port is inserted into the top junction of the left and right shielding surfaces. The position of the feed port can be moved according to the distance of the ship docking. The moving direction is along the normal direction of the covering belt. After the movement, the shielding surface of the track part can be automatically closed due to the action of the counterweight structure, and a rain shield is added to prevent rain, thereby solving the problem of fixing the position of the feed port of the existing cover plate structure, which can prevent rain and suppress dust.

[0100] 4) The material enters the tail assembly from the middle section assembly (through the tail transition air chamber)

[0101] Same as step 2), during operation, the transition air chamber and the conveying section air chamber maintain the same gas pressure, the air flow is discharged from the throttle hole, and an air film is formed to support the conveyor belt. The conveyor belt slides on the air film, and the molding conversion is completed at the same time;

[0102] The conveyor belt contour transition (i.e. the transition air chamber disc groove plate is arranged obliquely, the height gradually increases, and the width gradient and the smooth transition surface constitute a contour transition). The transition air chamber can realize the conversion of the conveyor belt between "U" type (middle conveying section) and "I" type (tail redirection roller), and throttling holes are opened on the disc groove plate according to a certain pattern, and the transition air chamber is connected to the air chamber of the tail assembly.

[0103] 5) Belt tensioning

[0104] Before the equipment is turned on, start the hydraulic system, the hydraulic cylinder works, and its output shaft drives the connector, which slides between the two beams through its slot. The front end of the connector drives the corresponding bearing forward, and then drives the rotating shaft to slide forward in the strip chute to achieve conveyor belt tensioning. After the conveyor belt is extended, the hydraulic cylinder automatically compensates for the extension stroke, so that the conveyor belt is always in a tensioned state to ensure the normal operation of the belt conveyor. The length of the strip chute on both sides of the tail shell determines the conveyor belt tensioning stroke. After the equipment is shut down, the hydraulic system stops working, the hydraulic cylinder is recovered, and the conveyor belt is relaxed to avoid forced extension in a non-working state.

Claims

1. A V-shaped air cushion conveyor, characterized in that: The middle section assembly of the conveyor has an air chamber which is formed of a V-shaped structure by a disc groove plate at the top and a V-shaped bottom plate, and the surface of the disc groove plate is an arc-shaped structure that is concave downwards; a support frame assembly with a lower roller is provided at the bottom of the middle section assembly, and a disc groove bracket assembly matching the V-shaped bottom plate is provided on the support frame assembly, and the disc groove bracket assembly is provided with a V-shaped mounting port matching the V-shaped bottom plate, so as to facilitate supporting the V-shaped bottom plate of the air chamber; A transition section assembly is provided between the middle section assembly and the head assembly and the tail assembly, and the transition section assembly includes a transition air chamber, one end of which is connected to the middle section of the air cushion machine, and the other end is connected to the head or the tail; the transition air chamber includes a disc groove plate with a throttle hole provided on the top thereof, and the surface of the disc groove plate is formed by a smooth transition from an arc surface with one end concave downward to a plane structure at the other end; one end of the arc surface of the disc groove plate is connected to the middle section of the air cushion machine, and one end of the plane structure is connected to the head or the tail; The width of the disc groove plate of the transition air chamber gradually increases from one end of the arc surface to the other end of the plane structure. The disc groove plate is arranged upwardly tilted, and one end of the disc groove plate plane structure is higher than one end of its arc surface. The conveyor belt includes an upper side belt and a lower side belt. The air chamber is used to support the upper side belt, and the lower roller is used to support the lower side belt. When the fan system provides air with a certain pressure and flow rate to the air chamber, the air in the air chamber overflows through the throttle hole on the disc groove, forming an air film with a certain pressure between the upper side belt and the disc groove of the conveyor belt to support the conveyor belt and the material on it. When the main driving force of the head rotates, it drives the conveyor belt to slide on the air film to realize the transportation of materials. The lower side belt of the conveyor belt contacts the lower roller. In this way, the rolling friction of the original roller belt conveyor is changed to fluid friction with air as the medium, reducing the running resistance. The head assembly comprises a head shell, which is provided with a material input end and a material output port, a roller for redirecting the conveyor belt is provided at the material input end inside the head shell, and a material gathering structure is provided inside the head shell, and the material gathering structure comprises a movable material baffle plate, a material baffle plate adjustment shaft, and a locking nut; the movable material baffle plate is an arc-shaped plate, and is arranged in the cavity of the head shell, with its inner arc surface facing the roller; the upper part of the outer arc surface of the movable material baffle plate is rotatably connected to the side wall of the head shell, the lower part of the outer arc surface of the movable material baffle plate is rotatably connected to one end of the material baffle plate adjustment shaft, and the other end of the material baffle plate adjustment shaft passes through the outside of the head shell and is threadedly connected to the locking nut; The tail of the conveyor is provided with a tensioning mechanism, which includes a support frame and two hydraulic cylinders. The tail of the conveyor is placed in the support frame, and a pair of horizontally arranged and mutually parallel beams are respectively provided on both sides of the support frame; the rotating shaft of the tail roller of the conveyor passes through the tail housing at both ends, and is installed between the corresponding pair of beams through bearings, and the two side walls of the tail housing are respectively provided with strip slides for horizontal displacement of the rotating shaft; a hydraulic cylinder is provided at each end of the tail roller shaft, and the hydraulic cylinder is horizontally installed between the pair of beams, and its telescopic end is connected to the outer seat of the bearing at the end of the roller shaft; the bearings at both ends of the rotating shaft are respectively supported by the two hydraulic cylinders, so that the conveyor belt is in a tensioned state; The working method of V-type air cushion conveyor is as follows: 1) When the material enters the head assembly; The material is thrown out from the conveyor belt and enters the head material gathering structure before it is scattered, forming a material column that falls along the curved surface of the head material gathering structure to the discharge port of the head shell; the material receiving angle of the movable baffle plate can be adjusted according to the characteristics of the material and the belt speed. The specific operation method is: loosen the locking nut, pull the movable baffle plate through the baffle plate adjustment shaft to make the movable baffle plate to a suitable angle, and fix the baffle plate adjustment shaft through the locking nut; 2) The material enters the middle section assembly from the die assembly, that is, passes through the die transition air chamber; During operation, the transition air chamber and the conveying section air chamber maintain the same gas pressure, and the air flow is discharged from the throttle hole to form an air film to support the conveyor belt. The conveyor belt slides on the air film and completes the molding conversion at the same time; Conveyor belt contour transition, that is, the transition air chamber disc groove plate is arranged obliquely, the height gradually rises, and the width gradually changes and the smooth transition surface constitutes a contour transition. The transition air chamber can realize the conversion of the conveyor belt between "I" type and "U" type, and the disc groove plate is provided with throttling holes according to a certain rule, and the transition air chamber is connected to the air chamber of the middle section component; 3) The material enters the middle section component; When the ship docks at the shore, the feed port is inserted into the top joint of the left and right shielding surfaces. The feed port position can be moved according to the distance of the ship docking. The moving direction is along the normal direction of the covering belt. After the movement, the shielding surface of the track part can be automatically closed due to the counterweight structure, and a rain shield is added to prevent rain, which solves the problem of the feed port position fixing of the existing cover plate structure, and can prevent rain and suppress dust. 4) The material enters the tail assembly from the middle section assembly and passes through the tail transition air chamber; Same as step 2), except that the transition air chamber is connected to the air chamber of the tail assembly to realize the conversion of the conveyor belt between "U" shape and "I" shape; 5) Belt tensioning; Before the equipment is turned on, the hydraulic system is started, the hydraulic cylinder works, and its output shaft drives the connecting piece, which slides between the two beams through its slot. The front end of the connecting piece drives the corresponding bearing forward, and then drives the rotating shaft to slide forward in the strip slide groove to achieve conveyor belt tensioning; after the conveyor belt is extended, the hydraulic cylinder automatically compensates for the extension stroke, so that the conveyor belt is always in a tensioned state to ensure the normal operation of the belt conveyor; the length of the strip slide grooves on both sides of the tail shell determines the conveyor belt tensioning stroke; after the equipment is shut down, the hydraulic system stops working, the hydraulic cylinder is recovered, and the conveyor belt is relaxed to avoid forced extension in a non-working state.

2. A V-shaped air cushion conveyor according to claim 1, characterized in that: A cover plate or a covering belt structure is provided on the top of the air chamber of the middle section assembly.

3. A V-shaped air cushion conveyor according to claim 2, characterized in that: The covering belt structure includes flexible shielding surfaces on left and right sides, a supporting frame and a counterweight structure. The flexible shielding surfaces are connected to the conveyor frame through the supporting frame. The counterweight structure is respectively placed on the flexible shielding surfaces on the left and right sides. Under the action of gravity, the counterweight structure causes the flexible shielding surfaces on both sides to close at the joint.

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