Support mechanism for a conveyor belt of a swing arm conveyor

Abstract

The application discloses a support mechanism for a conveying belt of a swing arm type conveying machine, the swing arm type conveying machine comprising a vertical arm and a horizontal arm, one end of the vertical arm being hinged to one end of the horizontal arm, the conveying belt being rotatably arranged in the vertical arm and the horizontal arm, two first roller groups being arranged at one end of the vertical arm and the horizontal arm respectively, an arc-shaped support section being formed between the two first roller groups, the arc-shaped support section corresponding to a position where the vertical arm and the horizontal arm are hinged, a redirection wheel being arranged at one end of the horizontal arm, the redirection wheel and the arc-shaped support section both being used for supporting the conveying belt, two second roller groups being arranged in the active gap, one side of the two second roller groups being hinged to one end of the vertical arm and the horizontal arm respectively, and the other side of the two second roller groups being hinged to a belt pressing piece. The application solves the problem that, in the prior art, when the vertical arm and the horizontal arm swing relative to each other, the conveying belt cannot be supported at a position corresponding to the hinge position of the vertical arm and the horizontal arm, the length of the suspended conveying belt is relatively long, and the stability of the conveying machine is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveyors, in particular to a support mechanism for a conveying belt of a swing arm type conveyor. BACKGROUND

[0002] At present, a continuous ship unloader using a belt conveyor as a main conveying system comprises a vertical arm and a horizontal arm, one end of the vertical arm is hingedly connected to one end of the horizontal arm, and a plurality of roller members for supporting the belt conveyor are arranged in the vertical arm and the horizontal arm. During unloading operation, the vertical arm needs to swing inwards and outwards relative to the horizontal arm, so that the material taking device at the head of the conveyor reaches each position in the ship cabin, and the bulk material is continuously discharged from the ship cabin, and then conveyed along the arm frame route by the belt conveyor and unloaded to the conveying machinery or system behind the shore.

[0003] The running track of the conveying belt changes at the arc segment due to the change of the swing angle of the vertical arm, that is, the geometric length of the conveying belt at the arc segment changes, resulting in two defects of the belt conveying system, one is that it is difficult to arrange the bottom redirection roller tensioning device, and the conventional tensioning device is not suitable for the continuous change of tension, which is not conducive to the stable operation of the conveyor and the service life of the conveying belt, and the other is that the position corresponding to the hinge connection between the vertical arm and the horizontal arm cannot be supported, which causes the conveying belt to have a long length of suspension, the conveying belt to jump, and the roller to bear a large load. SUMMARY

[0004] The present application aims to overcome the above technical deficiencies and provide a support mechanism for a conveying belt of a swing arm type conveyor, which solves the problem that the position corresponding to the hinge connection between the vertical arm and the horizontal arm cannot be supported when the vertical arm and the horizontal arm swing relative to each other, resulting in a long length of suspension of the conveying belt and a decrease in the stability of the conveyor operation.

[0005] To achieve the above technical purpose, the present application adopts the following technical solutions:

[0006] The application provides a support mechanism for a conveying belt of a swing arm type conveying machine, the swing arm type conveying machine comprising a vertical arm and a horizontal arm, one end of the vertical arm being hinged to one end of the horizontal arm, the conveying belt being rotatably arranged in the vertical arm and the horizontal arm, the support mechanism comprising a first roller set and a redirection wheel, the two first roller sets being respectively arranged at one end of the vertical arm and the horizontal arm, an arc-shaped support section being formed between the two first roller sets, the arc-shaped support section corresponding to a position where the vertical arm and the horizontal arm are hinged, the redirection wheel being arranged at one end of the horizontal arm, the redirection wheel and the arc-shaped support section both being used for supporting the conveying belt, the support mechanism further comprising two second roller sets and a belt pressing piece, the two second roller sets being both arranged in the active gap, one side of the two second roller sets being respectively hinged to one end of the vertical arm and the horizontal arm, the other side of the two second roller sets being both hinged to the belt pressing piece, the two second roller sets and the belt pressing piece being capable of forming a first state of jointly supporting the conveying belt, or the two second roller sets being separated from the conveying belt, the belt pressing piece supporting the conveying belt in a second state.

[0007] In some embodiments, the first roller set comprises a plurality of first support rollers, the plurality of first support rollers being spaced apart and rotatably arranged at one end of the vertical arm and the horizontal arm, and the arc-shaped support section being formed between the plurality of first support rollers.

[0008] In some embodiments, the second roller set comprises a plurality of second support rollers and connecting seats, the plurality of second support rollers being spaced apart and rotatably arranged between the two connecting seats, one side of the connecting seats being hinged to the vertical arm or the horizontal arm, the other side of the connecting seats being hinged to the belt pressing piece, and the plurality of second support rollers being arranged across the vertical arm or the horizontal arm and capable of supporting the conveying belt.

[0009] In some embodiments, the belt pressing piece comprises two buffer portions and a third support roller, the two buffer portions being hinged between the other side of the two connecting seats, the third support roller being rotatably connected between the two buffer portions, and the third support roller supporting the conveying belt.

[0010] In some embodiments, the buffer portion comprises a guide rod, two connecting rods, two transmission rods, two return springs, a first sliding block and two second sliding blocks, one end of the guide rod and one end of the two connecting rods being hinged to one end of the third support roller, the first sliding block being slidably connected to the guide rod, the two second sliding blocks being respectively slidably connected to the two connecting rods, and the two second sliding blocks being respectively hinged to the other side of the two connecting seats, one end of the two transmission rods being respectively hinged to the two second sliding blocks, the other end of the two transmission rods being both hinged to the first sliding block, and the two return springs being slidably sleeved on the two connecting rods, when the plurality of second support rollers are separated from the conveying belt, the two second sliding blocks can respectively slide towards one end of the two connecting rods and press the return springs.

[0011] In some embodiments, two compression belt roller sets are further included, and the two compression belt roller sets are respectively arranged at one end of the vertical arm and the horizontal arm and located on opposite sides of the movable gap, each of the compression belt roller set includes a fourth supporting roller, two compression rollers and two mounting seats, the two mounting seats are fixedly arranged at one end of the vertical arm or the horizontal arm, the fourth supporting roller is rotatably connected between the two mounting seats, the two compression rollers are arranged above the fourth supporting roller and are rotatably connected with the two mounting seats, and two limiting spaces are formed between the fourth supporting roller and the two compression rollers, the fourth supporting roller supports the conveying belt, and the edges on both sides of the conveying belt extend into the two limiting spaces.

[0012] In some embodiments, a plurality of fifth supporting rollers are further included, and the plurality of fifth supporting rollers are spaced apart and rotatably arranged at one end of the vertical arm and opposite to the plurality of first supporting rollers, the plurality of fifth supporting rollers support the conveying belt.

[0013] In some embodiments, the first supporting roller, the second supporting roller, the third supporting roller, the fourth supporting roller and the fifth supporting roller are all rubber rollers.

[0014] In some embodiments, the swing arm type conveyor further includes a telescopic member connected to one end of the vertical arm and the horizontal arm, and the vertical arm is driven to rotate around the horizontal arm through the telescopic member.

[0015] In some embodiments, the conveying belt is a bucket conveyor belt.

[0016] Compared with the prior art, the supporting mechanism for the conveying belt of the swing arm type conveyor provided by the present application is hinged at one end of the vertical arm and one end of the horizontal arm, the conveying belt is rotatably arranged in the vertical arm and the horizontal arm, two first supporting roller sets are arranged at one end of the vertical arm and the horizontal arm, an arc-shaped supporting section is formed between the two first supporting roller sets, the arc-shaped supporting section corresponds to a movable gap at the hinged position of the vertical arm and the horizontal arm, a redirection wheel is arranged at one end of the horizontal arm, the redirection wheel and the arc-shaped supporting section are both used for supporting the conveying belt, two second supporting roller sets are arranged in the movable gap, one side of each of the two second supporting roller sets is hinged to one end of the vertical arm and the horizontal arm, and the other side of each of the two second supporting roller sets is hinged to a compression belt member, when the vertical arm swings outward around the horizontal arm, the two second supporting roller sets can be driven to separate from the conveying belt, the compression belt member always supports the conveying belt, and the conveying belt can effectively avoid having a suspended section at the hinged position of the vertical arm and the horizontal arm, thereby improving the stability of the conveyor during operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the supporting mechanism for the conveying belt of the swing arm type conveyor provided by the present application;

[0018] Figure 2is a structure schematic view of two compression belt roller groups provided by the embodiment of the present application;

[0019] Figure 3 is a connection schematic view of the second roller group and the compression belt provided by the embodiment of the present application;

[0020] Figure 4 is a schematic view when the conveying belt swings provided by the embodiment of the present application;

[0021] Figure 5 is a schematic view of the conveying belt running track optimization design provided by the embodiment of the present application;

[0022] Figure 6 is a fitting curve diagram of the conveying belt arc segment wrap angle provided by the embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0024] In order to solve the technical problem that the conveying belt cannot be supported at the position corresponding to the hinge of the vertical arm and the horizontal arm in the prior art when the vertical arm and the horizontal arm swing relative to each other, so that the length of the suspended conveying belt is relatively long and the stability of the conveyor is reduced, the present application provides a support mechanism for the conveying belt of the swing arm conveyor, which can avoid the suspended section when the vertical arm rotates around the horizontal arm, and ensure the stability of the conveyor during operation.

[0025] Please refer to Figures 1-6 ​The supporting mechanism for the conveying belt of a swing arm type conveying machine in an embodiment of the present application, the swing arm type conveying machine 1 comprising a vertical arm 11 and a horizontal arm 12, one end of the vertical arm 11 being hinged to one end of the horizontal arm 12, the conveying belt 13 being rotatably arranged in the vertical arm 11 and the horizontal arm 12, the supporting mechanism 2 comprising a first roller set 21 and a redirecting wheel 22, two first roller sets 21 being respectively arranged at one end of the vertical arm 11 and the horizontal arm 12, an arc-shaped supporting section being formed between the two first roller sets 21, the arc-shaped supporting section corresponding to the position where the vertical arm 11 and the horizontal arm 12 are hinged, the redirecting wheel 22 being arranged at one end of the horizontal arm 12, the redirecting wheel 22 and the arc-shaped supporting section both being used for supporting the conveying belt, the supporting mechanism further comprising two second roller sets 23 and a belt pressing member 24, the two second roller sets 23 both being arranged in the active gap 20, one end of the two second roller sets 23 being respectively hinged to one end of the vertical arm 11 and the horizontal arm 12, the other end of the two second roller sets 23 both being hinged to the belt pressing member 24, the two second roller sets 23 and the belt pressing member 24 being capable of forming a first state of jointly supporting the conveying belt, or the two second roller sets 23 being separated from the conveying belt, the belt pressing member 24 supporting the conveying belt in a second state.

[0026] Further, referring to Figure 1 , the swing arm type conveying machine 1 further comprises a telescopic member 14, the telescopic member 14 being connected to one end of the vertical arm 11 and the horizontal arm 12, the vertical arm 11 being driven to rotate around the horizontal arm 12 through the telescopic member 14. Wherein, the telescopic member 14 is an electric cylinder, of course, in other embodiments, the telescopic member 14 can also be a pneumatic cylinder or a hydraulic cylinder, in addition, the conveying belt 13 is a bucket type conveying belt.

[0027] In the specific embodiment, referring to Figure 1 and Figure 4 , the first roller set 21 comprises a plurality of first supporting rollers 211, the plurality of first supporting rollers 211 being spaced apart and rotatably arranged at one end of the vertical arm 11 and the horizontal arm 12, the arc-shaped supporting section being formed between the plurality of first supporting rollers 211, it should be noted that the active gap 20 is formed between the two first supporting rollers 211 which are close to each other at one end of the vertical arm 11 and the horizontal arm 12, when the vertical arm 11 swings outward around the horizontal arm 12, a suspended section will appear at the position of the active gap 20, the conveying belt in the suspended section is supported by the belt pressing member 24, thereby improving the stability of the conveying belt.

[0028] Specifically, the second roller set 23 comprises a plurality of second supporting rollers 231 and connecting seats 232, the plurality of second supporting rollers 231 are arranged at intervals and rotatably arranged between the two connecting seats 232, one side of the connecting seat 232 is hinged with the vertical arm 11 or the horizontal arm 12, the other side of the connecting seat 232 is hinged with the belt pressing piece 24, and the plurality of second supporting rollers 231 are arranged across the vertical arm 11 or the horizontal arm 12 and can support the conveying belt.

[0029] It should be noted that when the axes of the vertical arm 11 and the horizontal arm 12 are perpendicular to each other, the plurality of first supporting rollers 211 and the plurality of second supporting rollers 231 support the conveying belt, when the vertical arm 11 rotates around the horizontal arm 12, the two connecting seats 232 can be driven to rotate, so that the plurality of second supporting rollers 231 are separated from the conveying belt, at this time, the rotation of the two connecting seats 232 can drive the belt pressing piece 24 to always support the conveying belt.

[0030] It should be noted that the belt pressing piece 24 is not limited to a specific structure, as long as it can always support the conveying belt and avoid the conveying belt from having a suspended section at the position where the vertical wall and the horizontal wall are hinged.

[0031] In the specific embodiment, the belt pressing piece 24 comprises two buffer portions 241 and a third supporting roller 242, the two buffer portions 241 are hinged between the other sides of the two connecting seats 232, the third supporting roller 242 is rotatably connected between the two buffer portions 241, and the third supporting roller 242 supports the conveying belt.

[0032] Specifically, the buffer portion 241 comprises a guide rod 2411, two connecting rods 2412, two transmission rods 2413, two return springs 2414, a first sliding block 2415 and two second sliding blocks 2416, one end of the guide rod 2411 and one end of the two connecting rods 2412 are hinged with one end of the third supporting roller 242, the first sliding block 2415 is slidingly connected with the guide rod 2411, the two second sliding blocks 2416 are respectively slidingly connected with the two connecting rods 2412, and the two second sliding blocks 2416 are respectively hinged with the other sides of the two connecting seats 232, one end of the two transmission rods 2413 is respectively hinged with the two second sliding blocks 2416, the other end of the two transmission rods 2413 is hinged with the first sliding block 2415, and the two return springs 2414 are slidingly sleeved on the two connecting rods 2412, when the plurality of second supporting rollers 231 are separated from the conveying belt, the two second sliding blocks 2416 can respectively slide towards one end of the two connecting rods 2412 and press the return springs 2414.

[0033] It should be noted that when the vertical arm 11 swings outward around the horizontal arm 12, the two connecting seats 232 are driven to rotate, and the two second sliders 2416 are driven to slide towards one end of the two connecting rods 2412 and press the return springs 2414, and the first slider 2415 is driven to move towards one end of the guide rod 2411, so that the third supporting roller 242 can always support the conveying belt.

[0034] On the basis of the above-mentioned scheme, two belt pressing roller sets 3 are further included, the two belt pressing roller sets 3 are respectively arranged at one end of the vertical arm 11 and the horizontal arm 12 and located on opposite sides of the movable gap 20, the belt pressing roller set 3 includes a fourth supporting roller 31, two pressing rollers 32 and two mounting seats 33, the two mounting seats 33 are fixedly arranged at one end of the vertical arm 11 or the horizontal arm 12, the two fourth supporting rollers 31 are rotationally connected between the two mounting seats 33, the two pressing rollers 32 are both located above the fourth supporting roller 31 and rotationally connected with the two mounting seats 33, respectively, two limiting spaces are formed between the two pressing rollers 32 and the fourth supporting roller 31, the fourth supporting roller 31 supports the conveying belt, and the edges on both sides of the conveying belt extend into the two limiting spaces, respectively.

[0035] It should be noted that in order to prevent the conveying belt from deviating during rotation, the two pressing rollers 32 are in contact with the edges on both sides of the conveying belt, and the distance between the axis of the fourth supporting roller 31 and the axes of the two pressing rollers 32 is arranged in a decreasing manner.

[0036] In the specific embodiment, a plurality of fifth supporting rollers 4 are further included, the plurality of fifth supporting rollers 4 are arranged at one end of the vertical arm 11 in a spaced and rotating manner and arranged opposite to the plurality of first supporting rollers 211, and the plurality of fifth supporting rollers 4 support the conveying belt. It should be noted that the first supporting roller 211, the second supporting roller 231, the third supporting roller 242, the fourth supporting roller 31 and the fifth supporting roller 4 are all rubber rollers.

[0037] On the basis of the above-mentioned scheme, the present application further provides a design method for optimizing the running track of the conveying belt, that is, for the arc segment of the conveying belt rotating around the horizontal arm through the vertical arm, the change of the length of the conveying belt is designed as a target function, the position of the vertical arm to the hinge point of the horizontal arm is optimized, so that the change of the length of the running track of the arc segment of the conveying belt in the whole working angle range is minimized, thereby reducing the influence of the swing of the vertical arm relative to the horizontal arm on the conveying system.

[0038] Specifically, the radius R of the deflection wheel, the radius r of the fifth supporting roller, the swing angle θ of the vertical arm (the angle with the vertical line), the wrap angle β of the conveying belt on the deflection wheel, the coordinates (x0, y0) of the hinge point A of the vertical arm and the horizontal arm, the coordinates (x1, y1) of the center B of the fifth supporting roller, the coordinates (x2, y2) of the intersection point C of the conveying belt and the deflection wheel, and the distance L between the hinge point A and the center B of the fifth supporting roller are set. The change of the length of the conveying belt is designed as a target function, the position of the vertical arm to the hinge point of the horizontal arm is optimized, so that the change of the length of the running track of the arc segment of the conveying belt in the whole working angle range is minimized, thereby reducing the influence of the swing of the vertical arm relative to the horizontal arm on the conveying system. , the distance from the center B to the tangent point C , the coordinates (x4, y4) of the tangent point D of the conveying belt and the fifth supporting roller.

[0039] Then the wrapping angle β of the conveying belt on the deflection roller is determined according to the fitting curve under different swing angles:

[0040]

[0041] The coordinates of the center B of the fifth supporting roller:

[0042] The coordinates of the tangent point C:

[0043] The distance from the center B to the tangent point C

[0044] The distance from the tangent point C to the tangent point D

[0045] The total length of the conveying belt length change section (the tangent line section of the lower belt surface + the arc line section)

[0046] The vertical arm is set to be in the vertical state, i.e. is the initial state, wherein , the objective function is optimized to obtain the solution when the minimum value is obtained, i.e. the optimal solution of the coordinates (x0, y0) of the hinge point A.

[0047] The specific embodiments of the application described above do not constitute a limitation on the protection scope of the application. Any various other corresponding changes and modifications made according to the technical concept of the application shall be included in the protection scope of the claims of the application.

Claims

1. A support mechanism for a conveying belt of a swing arm type conveying machine, the swing arm type conveying machine comprising a vertical arm and a horizontal arm, one end of the vertical arm being hingedly connected to one end of the horizontal arm, the conveying belt being rotatably arranged in the vertical arm and the horizontal arm, the support mechanism comprising a first group of idlers and a deflection roller, the two first groups of idlers being respectively arranged at one end of the vertical arm and the horizontal arm, an arc-shaped support section being formed between the two first groups of idlers, the arc-shaped support section corresponding to a position of the hinged connection of the vertical arm and the horizontal arm, the deflection roller being arranged at one end of the horizontal arm, the deflection roller and the arc-shaped support section both being used for supporting the conveying belt, characterized in that, The supporting mechanism further comprises two second roller sets and a belt pressing member, the two second roller sets are arranged in the movable gap, one end of each of the two second roller sets is hingedly connected to one end of the vertical arm and the horizontal arm, and the other end of each of the two second roller sets is hingedly connected to the belt pressing member, the two second roller sets and the belt pressing member can form a first state of jointly supporting the conveying belt, or the two second roller sets are separated from the conveying belt, and the belt pressing member supports the conveying belt in a second state; The second roller set comprises a plurality of second supporting rollers and a connecting seat, the plurality of second supporting rollers are arranged in an interval and rotatably arranged between the two connecting seats, one side of the connecting seat is hingedly connected to the vertical arm or the horizontal arm, and the other side of the connecting seat is hingedly connected to the belt pressing member, and the plurality of second supporting rollers are arranged in the vertical arm or the horizontal arm and can support the conveying belt; The belt pressing member comprises two buffer portions and a third supporting roller, the two buffer portions are hingedly connected between the other sides of the two connecting seats, and the third supporting roller is rotatably connected between the two buffer portions, and the third supporting roller supports the conveying belt; The buffer portion comprises a guide rod, two connecting rods, two transmission rods, two return springs, a first sliding block and two second sliding blocks, one end of the guide rod and one end of the two connecting rods are hingedly connected to one end of the third supporting roller, the first sliding block is slidably connected to the guide rod, the two second sliding blocks are slidably connected to the two connecting rods respectively, and the two second sliding blocks are hingedly connected to the other sides of the two connecting seats respectively, one end of the two transmission rods is hingedly connected to the two second sliding blocks respectively, the other end of the two transmission rods is hingedly connected to the first sliding block, and the two return springs are slidably sleeved on the two connecting rods, when the plurality of second supporting rollers are separated from the conveying belt, the two second sliding blocks can slide towards one end of the two connecting rods respectively and press the return springs.

2. The support mechanism for a conveying belt of a swing arm type conveying machine according to claim 1, characterized in that, The first roller set comprises a plurality of first supporting rollers, the plurality of first supporting rollers are arranged in an interval and rotatably arranged at one end of the vertical arm and the horizontal arm, and the plurality of first supporting rollers form the arc-shaped supporting section therebetween.

3. The support mechanism for a conveying belt of a swing arm type conveying machine according to claim 2, characterized in that, Further comprising two belt pressing roller sets, the two belt pressing roller sets are arranged at one end of the vertical arm and the horizontal arm respectively and located at opposite sides of the movable gap, the belt pressing roller set comprises a fourth supporting roller, two pressing rollers and two mounting seats, the two mounting seats are fixedly arranged at one end of the vertical arm or the horizontal arm, the two fourth supporting rollers are rotatably connected between the two mounting seats, the two pressing rollers are arranged above the fourth supporting roller and rotatably connected to the two mounting seats respectively, two limiting spaces are formed between the two pressing rollers and the fourth supporting roller, the fourth supporting roller supports the conveying belt, and the edges of the conveying belt at two sides extend into the two limiting spaces respectively.

4. The support mechanism for a conveying belt of a swing arm type conveying machine according to claim 3, wherein Further comprising a plurality of fifth supporting rollers, the plurality of fifth supporting rollers are arranged in an interval and rotatably arranged at one end of the vertical arm and arranged opposite to the plurality of first supporting rollers, and the plurality of fifth supporting rollers support the conveying belt.

5. The support mechanism for a conveying belt of a swing arm type conveying machine according to claim 4, wherein The first supporting roller, the second supporting roller, the third supporting roller, the fourth supporting roller and the fifth supporting roller are rubber rollers.

6. The support mechanism for a conveying belt of a swing arm type conveying machine according to claim 1, wherein The swing arm type conveyor further comprises a telescopic member connected to one end of the vertical arm and the horizontal arm, and the vertical arm is driven to rotate around the horizontal arm through the telescopic member.

7. The support mechanism for a swing arm conveyor belt according to claim 1, wherein The conveyor belt is a bucket conveyor belt.

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