Covered belt press and belt conveyor

Abstract

The application discloses a covering type belt pressing device, which comprises a front support frame, a belt pressing mechanism, a rear support frame arranged higher than the front support frame, the belt pressing mechanism comprises a main frame, a front belt pressing wheel, a rear belt pressing wheel, a floating type belt pressing assembly and a covering belt, the two ends of the main frame are hinged to the top of the front support frame and the rear support frame, the front belt pressing wheel is rotatably arranged at the front end of the main frame, the rear belt pressing wheel is rotatably arranged at the rear end of the main frame, the floating type belt pressing assembly is arranged below the main frame, the lower end of the floating type belt pressing assembly is in contact with the covering belt and can be adjusted according to the material height on the conveying belt, so that the covering belt is always kept in contact with the material on the conveying belt. The front belt pressing wheel and the rear belt pressing wheel drive the covering belt to form a circular rotating track, and the floating type belt pressing assembly presses the covering belt from below, so that the covering belt is always kept in contact with the material on the conveying belt, the belt pressing can be realized, and the material can be prevented from falling off. The application further provides a belt conveyor.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology, and more particularly to a covered belt pressing device and a belt conveyor. Background Technology

[0002] In certain special operating conditions, belt conveyors may develop concave sections due to specific factors. During unloaded operation, the belt may drift away from the idler rollers at these concave points due to the operating tension in that section, a phenomenon commonly known as "belt drift." Belt drift can cause various derivative problems such as belt misalignment and material spillage. During normal or heavy-load operation on the bearing surface, the weight of the material itself will alleviate the "belt drift" phenomenon. However, when no material is being conveyed, the belt pressing device must be used to prevent "belt drift." Currently, commonly used belt pressing devices employ wheel-type pressing, typically using a combination of three evenly arranged sets at a single concave point. Wheel-type pressing involves two pressing rollers pressing the conveyor belt. The pressing rollers are mounted on a single shaft with bearing seats at both ends. The bearing seats are mounted on a bracket, which is then bolted or welded to the intermediate frame of the belt conveyor. The existing wheel-type belt pressing device is passively operated. During the operation of the conveyor belt, the conveyor belt drives the wheel-type belt pressing device to rotate synchronously, which increases the power loss of the belt conveyor. Secondly, for belt conveyors with large tension and large angle changes in the concave arc section, when the belt is loose, it can still be pulled up towards the middle of the two wheels, making the conveyor belt unfolded, causing material to spill on the conveyor belt, which cannot meet the applicable requirements. Summary of the Invention

[0003] In order to solve the technical problems existing in the above-mentioned technology, it is necessary to provide a covered belt pressing device.

[0004] A covered belt pressing device includes a front support frame, a belt pressing mechanism, and a rear support frame that is positioned above the front support frame.

[0005] The belt pressing mechanism includes a main frame, a front belt pressing wheel, a rear belt pressing wheel, a floating belt pressing assembly, and a cover belt. The two ends of the main frame are hinged to the tops of the front and rear support frames, respectively, resulting in an inclined arrangement with the front lower than the rear. The front belt pressing wheel is rotatably mounted at the front end of the main frame, and the rear belt pressing wheel is rotatably mounted at the rear end. The cover belt is wound around the front and rear belt pressing wheels, which can drive the cover belt to form a circular rotation trajectory. The floating belt pressing assembly is positioned below the main frame along its length, with its lower end contacting the cover belt. The height of the floating belt pressing assembly can be adjusted according to the material height on the conveyor belt, ensuring that the cover belt always remains in contact with the material on the conveyor belt.

[0006] Preferably, the front and rear pressure pulleys have the same structure and deform when compressed. The front and rear pressure pulleys press down on the cover belt, so that after the cover belt contacts the material on the conveyor belt, the deformation of the front and rear pressure pulleys adheres the cover belt to the material.

[0007] Preferably, the front pressure pulley includes a shaft, an elastic element, and a hub; the two ends of the shaft are rotatably mounted on the main frame, the hub is symmetrically fixed on the shaft with the center line of the conveyor belt as a reference, the lower end of the hub abuts against the cover belt, and the elastic element is arranged between the two hubs along the axial direction of the shaft, and the elastic element is evenly distributed along the circumferential direction of the hub.

[0008] Preferably, the edge of the hub away from the elastic element is arc-shaped.

[0009] Preferably, the front pressure pulley is further provided with a power mechanism that can drive the front pressure pulley to rotate.

[0010] Preferably, the floating belt pressing assembly includes a left belt pressing section and a right belt pressing section; the left and right belt pressing sections are symmetrically arranged below the main frame with the center line of the conveyor belt as a reference, the lower ends of the left and right belt pressing sections abut against the cover belt, and the left and right belt pressing sections can float up and down according to the height of the material on the conveyor belt, so that the cover belt is always in contact with the material on the conveyor belt.

[0011] Preferably, the left pressure band and the right pressure band have the same structure, and the left pressure band and the right pressure band are arranged in an inverted V shape.

[0012] Preferably, the left pressing section includes a bracket and a pressing roller; the hinged end of the bracket is installed at the right end below the main frame, the other end of the bracket faces the left end of the bracket, and the pressing roller is rotatably installed at the non-hinged end of the bracket along the axial direction of the bracket.

[0013] Preferably, a return spring is provided above the non-hinged end of the bracket, and the upper end of the return spring is connected to the main frame.

[0014] It is also necessary to provide a belt conveyor.

[0015] A belt conveyor includes the aforementioned covered belt pressing device.

[0016] Compared with the prior art, the covered belt pressing device and belt conveyor provided by the present invention include a front support frame, a belt pressing mechanism, and a rear support frame set higher than the front support frame; the belt pressing mechanism includes a main frame, a front pressing pulley, a rear pressing pulley, a floating belt pressing assembly, and a cover belt; the two ends of the main frame are respectively hinged to the top of the front support frame and the rear support frame, so that the main frame is arranged in an inclined manner with the front lower and the rear higher; the front pressing pulley is rotatably installed at the front end of the main frame, and the rear pressing pulley is rotatably installed at the rear end of the main frame; the cover belt is wound around the front pressing pulley and the rear pressing pulley, and the front pressing pulley and the rear pressing pulley can drive the cover belt to form a circular rotation trajectory; the floating belt pressing assembly is set below the main frame along the length direction of the main frame, the lower end of the floating belt pressing assembly abuts against the cover belt, and the height of the floating belt pressing assembly can be adjusted according to the height of the material on the conveyor belt, so that the cover belt always keeps in close contact with the material on the conveyor belt. The main frame is arranged at an angle, with the front support frame and the rear support frame being higher than the front support frame. This allows the front and rear pressure pulleys to form a better downward pressure angle. The front and rear pressure pulleys drive the cover belt to form a circular rotation trajectory, allowing the cover belt to better fit with the material on the conveyor belt. Furthermore, a floating belt pressing assembly is used between the front and rear pressure pulleys to press down on the cover belt, ensuring that the cover belt always keeps in contact with the material on the conveyor belt in the rising section. This achieves both belt pressing and prevents material from spilling off the conveyor belt. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the present invention installed on a belt conveyor.

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the structure along direction A.

[0021] Figure 4 For the present invention Figure 2 A schematic diagram of the structure along direction B.

[0022] Figure 5 For the present invention Figure 2 A schematic diagram of the structure of CC.

[0023] In the diagram: front support frame 01, belt pressing mechanism 02, main frame 21, front belt pressing pulley 22, rotating shaft 221, elastic element 222, hub 223, rear belt pressing pulley 23, floating belt pressing assembly 24, left belt pressing section 241, bracket 2411, belt pressing roller 2412, return spring 2413, right belt pressing section 242, cover belt 25, idler roller 26, rear support frame 03, power mechanism 04, guide groove 05, adjusting rod 06, conveyor belt 07. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0026] Please refer to Figures 1 to 5 In one embodiment, the present invention provides a covered belt pressing device, including a front support frame 01, a belt pressing mechanism 02, and a rear support frame 03 positioned higher than the front support frame 01. The belt pressing mechanism 02 includes a main frame 21, a front pressing pulley 22, a rear pressing pulley 23, a floating belt pressing assembly 24, and a cover belt 25. The two ends of the main frame 21 are respectively hinged to the tops of the front support frame 01 and the rear support frame 03, so that the main frame 21 is inclined with the front lower and the rear higher. The front pressing pulley 22 is rotatably mounted on the front end of the main frame 21, and the rear pressing pulley 23 is rotatably mounted on the rear end of the main frame 21, thereby allowing the front pressing pulley 22 and the rear pressing pulley 23 to form a better pressing angle, which can better adapt to belt conveyors with concave arc sections. The cover belt 25 is wound around the front pressing pulley 22 and the rear pressing pulley 23, and the front pressing pulley 22 and the rear pressing pulley 23 can drive the cover belt 25 to form a circular rotation trajectory. The floating belt pressing assembly 24 is arranged below the main frame 21 along the length of the main frame 21. The lower end of the floating belt pressing assembly 24 abuts against the cover belt 25, and the height of the floating belt pressing assembly 24 can be adjusted according to the height of the material on the conveyor belt 07, so that the cover belt 25 always keeps in contact with the material on the conveyor belt 07.

[0027] In one embodiment, the front pressure pulley 22 and the rear pressure pulley 23 have the same structure and deform after being squeezed. The front pressure pulley 22 and the rear pressure pulley 23 press down on the cover belt 25, so that after the cover belt 25 contacts the material on the conveyor belt 07, the deformation of the front pressure pulley 22 and the rear pressure pulley 23 will adhere the cover belt 25 to the material. When material is carried on conveyor belt 07, the front pressure pulley 22 presses down on the cover belt 25 and squeezes the cover belt 25. Due to the reaction force of the material, the front pressure pulley 22 deforms, which causes the cover belt 25 to squeeze the material on conveyor belt 07. This can repair and level the height of the material on conveyor belt 07, making the height of the material on conveyor belt 07 more uniform. This not only makes it easier to prevent spillage when the conveyor belt 07 is in the rising section, but also allows the cover belt 25 to better adhere to the material. Secondly, by squeezing the cover belt 25 through the front pressure pulley 22 and the rear pressure pulley 23, the cover belt 25 is completely adhered to the material and the conveyor belt 07. At this time, friction is generated between the cover belt 25 and the surface of the material and the conveyor belt 07. As the cover belt 25 moves synchronously with the conveyor belt 07, it can also provide a certain amount of conveying power to the conveyor belt 07, which is beneficial for the conveyor belt 07 to climb slopes after carrying material.

[0028] Specifically, the front pressure pulley 22 includes a rotating shaft 221, an elastic element 222, and a hub 223. The two ends of the rotating shaft 221 are rotatably mounted on the main frame 21. The hub 223 is symmetrically fixed on the rotating shaft 221 with the center line of the conveyor belt 07 as a reference. The lower end of the hub 223 abuts against the cover belt 25. The elastic element 222 is arranged between the two hubs 223 along the axial direction of the rotating shaft 221, and the elastic element 222 is evenly distributed along the circumferential direction of the hub 223. The elastic element 222 can be a spring or a spring bar, that is, a part with deformation recovery capability. After the hub 223 contacts the cover belt 25, the elastic element 222 deforms under the reaction force of the material, exerting a downward pressure on the cover belt 25. At this time, the hub 223 also squeezes the cover belt 25. In this way, the elastic element 222 and the hub 223 can squeeze the cover belt 25 into an approximately W shape, so that the cover belt 25 always adheres to the conveyor belt 07 carrying the material. Secondly, after the cover belt 25 contacts the material, some material impurities will stick to the cover belt 25. When the elastic element 222 is no longer squeezed by the material, due to the restoring force of the elastic element 222, it will bounce and touch the cover belt 25, causing the cover belt 25 to vibrate, which can remove the impurities stuck to the cover belt 25, thereby maintaining the cleanliness of the cover belt 25 and reducing the wear of the cover belt 25.

[0029] The edge of the hub 223 away from the elastic element 222 is arc-shaped, which makes it easier for the hub 223 to squeeze the cover belt 25, so that the cover belt 25 fits better with the conveyor belt 07.

[0030] The front pressure pulley 22 is equipped with a power mechanism 04 that can drive it to rotate. The power mechanism 04 can drive the front pressure pulley 22 to rotate, providing a certain amount of conveying power to the conveyor belt 07, which is beneficial for the conveyor belt 07 to climb slopes after carrying materials. Of course, to provide more sufficient power, a power mechanism 04 can also be added to the rear pressure pulley 23.

[0031] In one embodiment, a guide groove 05 is provided on the main frame 21 at one end away from the front pressure pulley 22. The guide groove 05 is arranged along the main frame 21, and both ends of the rear pressure pulley 23 are placed in the guide groove 05, so that the rear pressure pulley 23 can move along the guide groove 05 to adjust the distance between the front pressure pulley 22 and the rear pressure pulley 23. An adjusting rod 06 is provided on the main frame 21 in the same direction as the guide groove 05. The adjusting rod 06 is threadedly connected to the main frame 21, and the movement of the rear pressure pulley 23 can be controlled by rotating the adjusting rod 06 to adjust the tension of the cover belt 25.

[0032] In one embodiment, the floating belt pressing assembly 24 includes a left belt pressing part 241 and a right belt pressing part 242. The left belt pressing part 241 and the right belt pressing part 242 are arranged below the main frame 21 with the center line of the conveyor belt 07 as a reference. The lower ends of the left belt pressing part 241 and the right belt pressing part 242 abut against the cover belt 25. The left belt pressing part 241 and the right belt pressing part 242 can float up and down according to the height of the material on the conveyor belt 07, so that the cover belt 25 is always in contact with the material on the conveyor belt 07.

[0033] Specifically, the left pressure belt section 241 and the right pressure belt section 242 have the same structure. The left pressure belt section 241 and the right pressure belt section 242 are arranged in an inverted V shape, which allows the left pressure belt section 241 and the right pressure belt section 242 to rely on the conical stacking structure of the material to keep the cover belt 25 in close contact with the material. Due to the squeezing action of the left pressure belt section 241 and the right pressure belt section 242, the edge of the cover belt 25 is forced to fit tightly with the conveyor belt 07, so that the cover belt 25 forms a W-shaped structure above the conveyor belt 07. This not only creates a closed conveying environment to prevent material spillage, but also uses the friction generated between the cover belt 25 and the conveyor belt 07 to provide a certain amount of auxiliary power to the conveyor belt 07, so that the conveyor belt 07 can form a more powerful climbing force in the rising section.

[0034] Specifically, the left pressure section 241 includes a bracket 2411 and a pressure roller 2412; the hinged end of the bracket 2411 is installed at the right end below the main frame 21, and the other end of the bracket 2411 faces the left end of the bracket 2411; the pressure roller 2412 is rotatably installed at the non-hinged end of the bracket 2411 along the axial direction of the bracket 2411.

[0035] Specifically, a return spring 2413 is provided above the non-hinged end of the support 2411, and the upper end of the return spring 2413 is connected to the main frame 21. After the pressure roller 2412 is subjected to the reaction force of the material, the support 2411 will move upward. Through the action of the return spring 2413, a downward elastic force can be formed on the pressure roller 2412, forcing the pressure roller 2412 to adhere the cover belt 25 to the material.

[0036] In one embodiment, the height of the main frame 21 can be adjusted; the height of the main frame 21 can be adjusted according to the height of the material carried by the conveyor belt 07, thereby adjusting the downward pressure of the front pressure roller 22, the rear pressure roller 23, and the floating pressure belt assembly 24 on the cover belt 25.

[0037] In one embodiment, a support roller 26 is provided above the main frame 21. The support roller 26 can provide a certain support for the covering belt 25 and prevent the covering belt 25 from sagging.

[0038] In one embodiment, the present invention provides a belt conveyor including a covered belt pressing device.

[0039] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A covered belt pressing device, characterized in that: It includes a front support frame, a pressing mechanism, and a rear support frame that is positioned higher than the front support frame; The belt pressing mechanism includes a main frame, a front belt pressing wheel, a rear belt pressing wheel, a floating belt pressing assembly, and a cover belt. The two ends of the main frame are respectively hinged to the top of the front support frame and the rear support frame, so that the main frame is inclined with the front lower and the rear higher. The front belt pressing wheel is rotatably installed at the front end of the main frame, and the rear belt pressing wheel is rotatably installed at the rear end of the main frame. The cover belt is wound around the front and rear belt pressing wheels, and the front and rear belt pressing wheels can drive the cover belt to form a circular rotation trajectory. The floating belt pressing assembly is set below the main frame along the length direction of the main frame. The lower end of the floating belt pressing assembly abuts against the cover belt, and the height of the floating belt pressing assembly can be adjusted according to the height of the material on the conveyor belt, so that the cover belt always keeps in close contact with the material on the conveyor belt. The front and rear pressure rollers have the same structure and deform when squeezed. The front and rear pressure rollers press down on the cover belt, so that after the cover belt contacts the material on the conveyor belt, the deformation of the front and rear pressure rollers will adhere the cover belt to the material.

2. The covering-type pressing device according to claim 1, characterized in that: The front pressure pulley includes a shaft, an elastic element, and a hub; the two ends of the shaft are rotatably mounted on the main frame, the hub is symmetrically fixed on the shaft with the center line of the conveyor belt as a reference, the lower end of the hub abuts against the cover belt, and the elastic element is arranged between the two hubs along the axial direction of the shaft, and the elastic element is evenly distributed along the circumferential direction of the hub.

3. The covered belt pressing device according to claim 2, characterized in that: The edge of the hub away from the elastic element is arc-shaped.

4. The covered belt pressing device according to claim 1 or 2, characterized in that: The front pressure pulley is also equipped with a power mechanism that can drive the front pressure pulley to rotate.

5. The covered belt pressing device according to claim 1 or 2, characterized in that: The floating belt pressing assembly includes a left belt pressing section and a right belt pressing section. The left and right belt pressing sections are symmetrically arranged below the main frame with the center line of the conveyor belt as the reference. The lower ends of the left and right belt pressing sections abut against the cover belt. The left and right belt pressing sections can float up and down according to the height of the material on the conveyor belt, so that the cover belt is always in contact with the material on the conveyor belt.

6. The covered belt pressing device according to claim 5, characterized in that: The left and right pressure band sections have the same structure, and are arranged in an inverted V-shape.

7. The covered belt pressing device according to claim 6, characterized in that: The left pressing section includes a bracket and a pressing roller; the hinged end of the bracket is installed at the right end below the main frame, and the other end of the bracket faces the left end of the bracket. The pressing roller is rotatably installed at the non-hinged end of the bracket along the axial direction of the bracket.

8. The covered belt pressing device according to claim 7, characterized in that: A return spring is provided above the non-hinged end of the bracket, and the upper end of the return spring is connected to the main frame.

9. A belt conveyor, characterized in that: Includes the covered belt pressing device as described in any one of claims 1-8.

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