Flexible adjustable belt pressing device of belt conveyor

Abstract

The utility model discloses a flexible adjustable belt conveyor belt pressing device. The flexible adjustable belt conveyor belt pressing device comprises a belt pressing device frame, a span adjusting assembly, an angle adjusting assembly, a tensioning assembly and a belt pressing wheel assembly. A span adjusting assembly extending horizontally is installed on the belt pressing device frame, angle adjusting assemblies are installed on the span adjusting assembly in a bilateral symmetry mode, belt pressing wheel assemblies are installed on the lower portions of the angle adjusting assemblies, and tensioning assemblies are arranged on the side faces of the belt pressing wheel assemblies. According to the technical scheme, the structure is simple, maintenance is convenient, reliability is high, the problem that materials impact the pinch roller due to the unreasonable span is effectively solved, the service life of the pinch roller is prolonged, the maintenance cost of a conveying belt is reduced, production efficiency is improved, flexible contact between the pinch roller and a rubber belt can be achieved, and the service life of the conveying belt is prolonged. Abrasion and cracking of the adhesive tape caused by too large tension of the adhesive tape are avoided, and the compact structure enables the equipment to achieve an efficient function in a limited space.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor system technology, specifically to a belt pressing device for a flexible adjustable belt conveyor. Background Technology

[0002] Material conveying technology is a common technology in modern industrial production, and belt conveyors, as one of the most commonly used pieces of equipment, are widely used in various industries. The operating route of a belt conveyor is designed according to different process requirements and tunnel terrain. When the operating route has concave sections, the belt and idlers may not be completely in contact, necessitating the installation of belt pressing devices to prevent problems such as belt deviation and slippage that could cause material spillage during operation.

[0003] Defects and shortcomings of existing technology:

[0004] Most belt pressing devices on the market are fixed and cannot adjust the span of the pressing rollers according to actual needs. After the belt conveyor carries material, the material impacts the pressing rollers when passing through the pressing device due to the unreasonable span of the pressing rollers, causing the material to spill onto the ground. This requires constant cleaning by workers and reduces conveying efficiency. At the moment of start-up of the belt conveyor, the belt tension is large, and the pressing rollers cannot make flexible contact with the belt, causing the belt to wear and crack, resulting in a shorter belt life and increased equipment maintenance costs. Utility Model Content

[0005] Therefore, this utility model provides a flexible adjustable belt conveyor belt pressing device to solve the above-mentioned problems in the prior art. To achieve the above objective, this utility model provides the following technical solution: According to a first aspect of this utility model, a flexible adjustable belt conveyor belt pressing device includes a pressing device frame, a span adjustment component, an angle adjustment component, a tensioning component, and a pressing wheel assembly; a horizontally extending span adjustment component is installed on the pressing device frame, angle adjustment components are symmetrically installed on the span adjustment component, a pressing wheel assembly is installed at the lower part of the angle adjustment component, and a tensioning component is provided on the side of the pressing wheel assembly.

[0006] Furthermore, the pressing device frame consists of two "gate"-shaped gantry frames connected by crossbeams to form a frame structure, with the span adjustment component set between the two gantry frames.

[0007] Furthermore, the span adjustment assembly includes an optical shaft, a bidirectional trapezoidal lead screw, a slider, a linear bearing, a trapezoidal flange nut, a locking block, a deep groove ball bearing A, and a retaining ring for the bore. A locking block is located in the middle of the bidirectional trapezoidal lead screw. Deep groove ball bearings A are installed at both ends of the locking block through the retaining ring for the bore. Trapezoidal flange nuts are symmetrically installed on both sides of the trapezoidal locking block. The trapezoidal flange nuts are connected to the slider through internal hex bolts. The trapezoidal flange nuts are threadedly connected to the threaded section of the bidirectional trapezoidal lead screw. The optical shaft passes through the locking block and the slider. The locking block is located in the middle of the optical shaft. Two sliders are distributed on both sides of the locking block. A linear bearing is installed between the slider and the optical shaft through the retaining ring for the bore. Both ends of the optical shaft are connected to the gantry frame through external hex bolts.

[0008] Furthermore, the span adjustment assembly also includes an outer spherical square bearing A and a stainless steel handwheel A; the gantry frame is connected to the outer spherical square bearing A by external hexagonal bolts, and the two ends of the bidirectional trapezoidal screw are respectively inserted into the outer spherical square bearing A, and the stainless steel handwheel A is installed on the end face of the bidirectional trapezoidal screw by external hexagonal bolts.

[0009] Furthermore, the angle adjustment assembly includes a hexagonal bar, flange copper sleeve A, flange copper sleeve B, locking bolts, a gear body, a rack body, a rack base plate, a vertical plate, and a connecting block. The rack body is connected to the rack base plate by internal hexagonal bolts. The outer flange of the gear body is provided with flange copper sleeve A and flange copper sleeve B. The slotted holes at the upper ends of the two vertical plates are respectively inserted into the flange copper sleeves B on the outer sides of the gear body. The side of the vertical plate is connected to the rack base plate by internal hexagonal bolts. The gear body and the rack body mesh and drive each other. The middle position of the vertical plate is connected to the connecting block by external hexagonal bolts. A pressure roller assembly is installed at the lower end of the vertical plate. The hexagonal bar passes through the locking block and the gear body. The locking block is located in the middle position of the hexagonal bar. The gear body is located at the middle opening of the slider. There is a gap between the gear body and the hexagonal bar. A flange copper sleeve B is provided between the outer flange of the slider and the gear body. The locking bolts lock the locking block onto the hexagonal bar.

[0010] Furthermore, the angle adjustment assembly also includes an outer spherical square bearing B and a stainless steel handwheel B. The gantry frame is equipped with the outer spherical square bearing B via external hexagonal bolts. The two ends of the hexagonal bar are respectively inserted into the outer spherical square bearing B, and the stainless steel handwheel B is installed on the end face of the hexagonal bar via external hexagonal bolts.

[0011] Furthermore, the stainless steel handwheel A is connected to the end face of the double-sided trapezoidal screw in a square opening manner, and the stainless steel handwheel B is connected to the end face of the hexagonal bar in a square opening manner.

[0012] Furthermore, the pressure roller assembly includes a pressure roller body, a deep groove ball bearing B, and a pressure roller shaft. The lower end of the upright plate is connected to the pressure roller shaft by external hex bolts. The pressure roller shaft passes through the pressure roller body. Deep groove ball bearings B are installed on both sides of the pressure roller body. A collar of the pressure roller shaft is provided between the deep groove ball bearings B and the upright plate.

[0013] Furthermore, the tensioning assembly includes a tripod, a spring, a trapezoidal tensioning screw, a trapezoidal flange nut, a spherical bearing, and a rotating shaft. The tripod is connected to the slider by hex bolts. One end of the trapezoidal tensioning screw passes through the slot of the tripod and is connected to the vertical plate of the pressure roller body through the spherical bearing. A rotating shaft and a collar are provided between the spherical bearing and the vertical plate. The rotating shaft is connected to the vertical plate by hex bolts. The other end of the trapezoidal tensioning screw is fitted with a spring through a trapezoidal flange nut. Large flat washers are provided at the contact points between the spring and the tripod and the trapezoidal flange nut. A cotter pin is provided at the tail of the trapezoidal tensioning screw.

[0014] Furthermore, the crossbeams are connected to the gantry frame using external hexagonal bolts.

[0015] This utility model has the following advantages:

[0016] 1. The flexible adjustable belt pressing device consists of a frame, a span adjustment device, an angle adjustment device, and a tensioning device. It features a modular design, simple structure, convenient maintenance, and high reliability.

[0017] 2. The pressure rollers are arranged along the belt, and their span, angle, and height are all adjustable. The span is adjusted manually by a two-way trapezoidal screw driving two slider groups. The height is adjusted manually by a gear-driven rack and pinion fixed together with a hexagonal bar. The angle is adjusted manually by a spring tensioning device. This effectively solves the problem of material impact on the pressure rollers caused by unreasonable span, increases the service life of the pressure rollers, reduces the maintenance cost of the conveyor belt, and improves production efficiency.

[0018] 3. The belt pressing device is equipped with a tensioning device, which can achieve flexible contact between the belt pressing wheel and the belt, avoiding belt wear and cracking caused by excessive belt tension.

[0019] 4. The compact structure enables the equipment to achieve efficient functions within a limited space.

[0020] 5. It can be used in oil-resistant and corrosive working environments.

[0021] 6. It can meet the needs of belt conveyor conveying industries such as steel mills, power plants, ports, docks, various metal mines, and coal mines. Attached Figure Description

[0022] Figure 1This is a three-dimensional structural diagram of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of the present invention.

[0023] Figure 2 This is a front view of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of the present invention.

[0024] Figure 3 A side view of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of this utility model.

[0025] Figure 4 This is a partial structural diagram of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of the present invention.

[0026] Figure 5 This is a partial structural diagram of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of the present invention.

[0027] Figure 6 This is a structural diagram of the tensioning component of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of this utility model.

[0028] Figure 7 This is a structural diagram of the tensioning component of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of this utility model.

[0029] Figure 8 This is a structural diagram of an angle adjustment component of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of the present invention.

[0030] Figure 9 This is a top view of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of the present invention.

[0031] Figure 10 This is a structural diagram of the tensioning component of a flexible adjustable belt conveyor belt pressing device provided for some embodiments of this utility model.

[0032] In the diagram, 1. Frame, 2. Grooved roller, 3. Belt, 4. Belt pressing device, 41. Belt pressing device frame, 411. Gantry frame, 412. Crossbeam, 42. Optical shaft, 43. Double-direction trapezoidal lead screw, 431. Outer spherical square bearing A, 432. Stainless steel handwheel A, 44. Hexagonal bar, 441. Outer spherical square bearing B, 442. Stainless steel handwheel B, 45. Slider, 451. Linear bearing, 452. Trapezoidal flange nut, 453. Flange copper sleeve A, 454. Flange copper sleeve B, 46. Locking block, 4 61. Deep groove ball bearing A; 462. Hole retaining ring; 463. Locking bolt; 47. Angle adjustment assembly; 471. Gear body; 472. Rack body; 473. Rack base plate; 474. Vertical plate; 475. Connecting block; 48. Tensioning assembly; 481. Triangular bracket; 482. Spring; 483. Trapezoidal tensioning screw; 484. Trapezoidal nut; 485. Spherical plain bearing; 486. Rotating shaft; 49. Pressure roller assembly; 491. Pressure roller body; 492. Deep groove ball bearing B; 493. Pressure roller shaft. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] Example 1

[0035] like Figures 1 to 10 As shown, a flexible adjustable belt conveyor belt pressing device according to the first aspect embodiment of the present invention includes a belt pressing device frame 41, a span adjustment component, an angle adjustment component 47, a tensioning component 48, and a belt pressing wheel assembly 49; a horizontally extending span adjustment component is installed on the belt pressing device frame 41, the angle adjustment component 47 is symmetrically installed on the span adjustment component, the belt pressing wheel assembly 49 is installed at the lower part of the angle adjustment component 47, and the tensioning component 48 is provided on the side of the belt pressing wheel assembly 49.

[0036] In the above embodiments, it should be noted that the purpose of this application is to address the issue of belt conveyor systems in industries such as mining, ports, power, and cement, where the belt is prone to deflection due to the concave arc section of the belt conveyor. Conventional belt pressing devices cannot adjust the span of the pressing pulleys, resulting in problems such as damage to the pressing pulleys from material impacts, material spillage, hard contact between the pressing pulleys and the belt causing wear and cracking, low versatility, and inconvenient maintenance. The provided flexible adjustable belt pressing device features a simple structure, convenient maintenance, flexible contact between the pressing pulleys and the belt to prevent belt damage, high reliability, and strong adaptability.

[0037] Figure 2 and Figure 3 In the middle, the frame 1 is used to support the trough roller 2, the trough roller 2 is used to support the belt 3, and the belt 3 is equipped with a belt pressing device 4.

[0038] The technical effects achieved by the above embodiments are as follows: Through the flexible adjustable belt conveyor belt pressing device of this embodiment, the flexible adjustable belt pressing device is installed at the slope change point of the belt conveyor. It adjusts the span of the pressing roller according to the material condition of the conveyor belt, avoiding direct impact of material on the pressing roller, which could cause damage to the pressing roller and material spillage. It adjusts the tension of the pressing roller according to the belt tension, preventing excessive belt tension from causing belt wear and cracking. It boasts high reliability, stable operation, and long service life. It is highly adaptable, allowing for adjustments based on changes in load and belt tension, thus improving production efficiency. It reduces abnormal downtime caused by material impact, improving production efficiency. It reduces damage to the belt from structural components, extending the belt's service life. It reduces the labor intensity of on-site personnel, reducing the labor and time costs required for manual adjustments. It improves the operating environment, meeting environmental protection requirements.

[0039] Example 2

[0040] like Figures 1 to 10 As shown, a flexible adjustable belt conveyor pressing device includes all the contents of Embodiment 1. In addition, the pressing device frame 41 is two "gate" type gantry frames 411 connected by a crossbeam 412 to form a frame structure, and the span adjustment component is set between the two gantry frames 411.

[0041] The technical effect achieved by the above embodiments is that the pressing device frame 41, including the gantry frame 411 and the crossbeam 412, enhances the stability of the device.

[0042] Example 3

[0043] like Figures 1 to 10As shown, a flexible adjustable belt conveyor belt pressing device includes all the contents of Embodiment 2. In addition, the span adjustment component includes an optical shaft 42, a bidirectional trapezoidal lead screw 43, a slider 45, a linear bearing 451, a trapezoidal flange nut 452, a locking block 46, a deep groove ball bearing A461, and a retaining ring 462. A locking block 46 is provided at the middle position of the bidirectional trapezoidal lead screw 43. Deep groove ball bearings A461 are installed at both ends of the locking block 46 through the retaining ring 462. The trapezoidal locking block 46 is symmetrically installed on both sides. There is a trapezoidal flange nut 452, which is connected to the slider 45 by an internal hex bolt. The trapezoidal flange nut 452 is threadedly connected to the threaded section of the double trapezoidal lead screw 43. The optical shaft 42 passes through the locking block 46 and the slider 45. The locking block 46 is located in the middle of the optical shaft 42. The two sliders 45 are distributed on both sides of the locking block 46. A linear bearing 451 is installed between the slider 45 and the optical shaft 42 through a hole using a retaining ring 462. The two ends of the optical shaft 42 are connected to the gantry frame 411 by external hex bolts.

[0044] Optionally, the span adjustment assembly also includes an outer spherical square bearing A431 and a stainless steel handwheel A432; the gantry frame 411 is connected to the outer spherical square bearing A431 by an outer hexagonal bolt, the two ends of the double trapezoidal screw 43 are respectively inserted into the outer spherical square bearing A431, and the stainless steel handwheel A432 is installed on the end face of the double trapezoidal screw 43 by an outer hexagonal bolt.

[0045] The technical effect achieved by the above embodiment is as follows: the adjusting handwheel is fixed together with the bidirectional trapezoidal screw. When the handwheel is turned forward or backward, the slider group is synchronously separated or merged with the forward or reverse rotation of the bidirectional trapezoidal screw, thereby satisfying the synchronous separation and merging of the pressure roller group, and thus realizing the span adjustment of the pressure roller.

[0046] Example 4

[0047] like Figures 1 to 10As shown, a flexible adjustable belt conveyor belt pressing device includes all the contents of Embodiment 3. In addition, the angle adjustment component 47 includes a hexagonal bar 44, flange copper sleeve A453, flange copper sleeve B454, locking bolt 463, gear body 471, rack body 472, rack base plate 473, upright plate 474, and connecting block 475. The rack body 472 is connected to the rack base plate 473 by internal hexagonal bolts. The outer flange portion of the gear body 471 is provided with flange copper sleeve A453 and flange copper sleeve B454. The slotted holes at the upper ends of the two upright plates 474 respectively pass through the flange copper sleeves B454 on the outer sides of both ends of the gear body 471. The gear body 471 is connected to the rack base plate 472 by internal hex bolts. The gear body 471 meshes with the rack body 472 for transmission. The middle position of the vertical plate 474 is connected to the connecting block 475 by external hex bolts. The lower end of the vertical plate 474 is equipped with a pressure roller assembly 49. The hexagonal bar 44 passes through the locking block 46 and the gear body 471. The locking block 46 is located in the middle position of the hexagonal bar 44. The gear body 471 is located at the middle opening of the slider 45. There is a gap between the gear body 471 and the hexagonal bar 44. A flange copper sleeve B454 is provided between the outer flange of the slider 45 and the gear body 471. The locking bolt 463 locks the locking block 46 onto the hexagonal bar 44.

[0048] Optionally, the angle adjustment assembly 47 also includes an outer spherical square bearing B441 and a stainless steel handwheel B442. The gantry frame 411 is equipped with the outer spherical square bearing B441 by external hexagonal bolts. The two ends of the hexagonal bar 44 are respectively inserted into the outer spherical square bearing B441, and the stainless steel handwheel B442 is installed on the end face of the hexagonal bar 44 by external hexagonal bolts.

[0049] Optionally, the stainless steel handwheel A432 and the double-sided trapezoidal lead screw 43 are connected by a square opening at their ends, and the stainless steel handwheel B442 and the hexagonal bar 44 are connected by a square opening at their ends.

[0050] The technical effects achieved by the above embodiments are as follows: After the pressure roller height is adjusted to the correct position, the compression of the spring is adjusted by rotating the trapezoidal nut of the tensioning device in both directions, so that the pressure roller makes soft contact with the conveyor belt to match the belt tension. At the same time, the spring device can, to a certain extent, avoid the risk of belt wear and cracking caused by excessive instantaneous tension in the conveyor.

[0051] Example 5

[0052] like Figures 1 to 10As shown, a flexible adjustable belt conveyor belt pressing device includes all the contents of Embodiment 4. In addition, the belt pressing wheel assembly 49 includes a belt pressing wheel body 491, a deep groove ball bearing B492, and a belt pressing wheel shaft 493. The lower end of the upright plate 474 is connected to the belt pressing wheel shaft 493 by external hex bolts. The belt pressing wheel shaft 493 passes through the belt pressing wheel body 491. Deep groove ball bearings B492 are installed on both sides of the belt pressing wheel body 491. A collar of the belt pressing wheel shaft 493 is provided between the deep groove ball bearings B492 and the upright plate 474.

[0053] Optionally, the tensioning assembly 48 includes a tripod 481, a spring 482, a trapezoidal tensioning screw 483, a trapezoidal nut 484, a spherical bearing 485, and a rotating shaft 486. The tripod 481 is connected to the slider 45 by an external hex bolt. One end of the trapezoidal tensioning screw 483 passes through the slot of the tripod 481 and is connected to the upright plate 474 of the pressure roller body 491 through the spherical bearing 485. A rotating shaft 486 and a collar are provided between the spherical bearing 485 and the upright plate 474. The rotating shaft 486 is connected to the upright plate 474 by an external hex bolt. The other end of the trapezoidal tensioning screw 483 is fitted with a spring 482 through the trapezoidal nut 484. Large flat washers are provided at the contact points between the spring 482 and the tripod 481 and the trapezoidal nut 484. A cotter pin is provided at the tail of the trapezoidal tensioning screw 483.

[0054] Optionally, the crossbeam 412 and the gantry frame 411 are connected together by external hex bolts.

[0055] The flexible adjustable belt conveyor belt pressing device adopts a modular design, which can adjust the span and tension of the pressing rollers according to the on-site operating conditions of the belt conveyor to meet the needs of different materials, different carrying capacities, and different slope angles.

[0056] Pressure roller span adjustment: The adjustment handwheel is fixed together with the bidirectional trapezoidal screw. When the handwheel is turned forward or backward, the slider group separates or merges synchronously with the forward or reverse rotation of the bidirectional trapezoidal screw, thereby satisfying the synchronous separation and merging of the pressure roller group and realizing the span adjustment of the pressure roller.

[0057] Pressure roller tension adjustment: The tension of the pressure roller is achieved by adjusting its height and angle.

[0058] Pressure roller height adjustment: The adjustment handwheel is fixed together with the hexagonal bar. There is a gap between the hexagonal bar and the hexagonal hole in the gear. When the handwheel is turned forward or backward, the rack moves relative to the gear as the gear rotates, so as to meet the synchronous raising and lowering of the pressure roller assembly, thereby realizing the height adjustment of the pressure roller.

[0059] Pressure roller angle adjustment: After the pressure roller height is adjusted to the correct position, the compression of the spring is adjusted by rotating the trapezoidal nut of the tensioning device clockwise / counterclockwise, so that the pressure roller makes soft contact with the belt tension. At the same time, the spring device can, to some extent, avoid the risk of belt wear and cracking caused by excessive instantaneous tension in the conveyor.

[0060] In the description of this utility model, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0065] In the description of this specification, the references to terms such as "Embodiment 1," "Embodiment 2," "Example," "Specific Example," or "Some Examples," etc., indicate that the specific method, apparatus, or feature described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, methods, apparatus, or features described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A belt pressing device for a flexible adjustable belt conveyor, characterized in that, It includes a belt pressing device frame (41), a span adjustment assembly, an angle adjustment assembly (47), a tensioning assembly (48), and a belt pressing wheel assembly (49); a horizontally extending span adjustment assembly is installed on the belt pressing device frame (41), an angle adjustment assembly (47) is symmetrically installed on the span adjustment assembly, a belt pressing wheel assembly (49) is installed at the lower part of the angle adjustment assembly (47), and a tensioning assembly (48) is provided on the side of the belt pressing wheel assembly (49).

2. The belt pressing device for a flexible adjustable belt conveyor according to claim 1, characterized in that, The pressing device frame (41) is formed by two "gate" type gantry frames (411) connected by a crossbeam (412) to form a frame structure, and the span adjustment component is set between the two gantry frames (411).

3. The belt pressing device for a flexible adjustable belt conveyor according to claim 2, characterized in that, The span adjustment assembly includes an optical axis (42), a double-acting trapezoidal lead screw (43), a slider (45), a linear bearing (451), a trapezoidal flange nut (452), a locking block (46), a deep groove ball bearing A (461), and a retaining ring (462). A locking block (46) is located at the middle of the double-acting trapezoidal lead screw (43). Deep groove ball bearings A (461) are mounted on both ends of the locking block (46) via retaining rings (462). Trapezoidal flange nuts (452) are symmetrically installed on both sides of the trapezoidal locking block (46). The optical shaft (42) is connected to the slider (45) by internal hex bolts, and the trapezoidal flange nut (452) is threaded to the threaded section of the double trapezoidal screw (43). The optical shaft (42) passes through the locking block (46) and the slider (45). The locking block (46) is located in the middle of the optical shaft (42). The two sliders (45) are distributed on both sides of the locking block (46). A linear bearing (451) is installed between the slider (45) and the optical shaft (42) through a retaining ring (462). The two ends of the optical shaft (42) are connected to the gantry frame (411) by external hex bolts.

4. The belt pressing device for a flexible adjustable belt conveyor according to claim 3, characterized in that, The span adjustment assembly also includes an outer spherical square bearing A (431) and a stainless steel handwheel A (432); the gantry frame (411) is connected to the outer spherical square bearing A (431) by an outer hexagonal bolt, and the two ends of the double trapezoidal screw (43) are respectively inserted into the outer spherical square bearing A (431), and the stainless steel handwheel A (432) is installed on the end face of the double trapezoidal screw (43) by an outer hexagonal bolt.

5. The belt pressing device for a flexible adjustable belt conveyor according to claim 4, characterized in that, The angle adjustment assembly (47) includes a hexagonal bar (44), flange copper sleeve A (453), flange copper sleeve B (454), locking bolt (463), gear body (471), rack body (472), rack base plate (473), upright plate (474), and connecting block (475). The rack body (472) is connected to the rack base plate (473) by internal hexagonal bolts. The outer flange of the gear body (471) is provided with flange copper sleeve A (453) and flange copper sleeve B (454). The slotted holes at the upper ends of the two upright plates (474) are respectively inserted into the flange copper sleeves B (454) on the outer sides of both ends of the gear body (471). The side of the upright plate (474) is connected to the rack base plate (473) by internal hexagonal bolts. At the beginning, the gear body (471) meshes with the rack body (472) for transmission. The middle position of the vertical plate (474) is connected to the connecting block (475) by an external hexagonal bolt. The lower end of the vertical plate (474) is equipped with a pressure roller assembly (49). The hexagonal bar (44) passes through the locking block (46) and the gear body (471). The locking block (46) is located in the middle position of the hexagonal bar (44). The gear body (471) is located at the middle opening position of the slider (45). There is a gap between the gear body (471) and the hexagonal bar (44). A flange copper sleeve B (454) is provided between the outer flange of the slider (45) and the gear body (471). The locking bolt (463) locks the locking block (46) onto the hexagonal bar (44).

6. The belt pressing device for a flexible adjustable belt conveyor according to claim 5, characterized in that, The angle adjustment assembly (47) also includes an outer spherical square bearing B (441) and a stainless steel handwheel B (442). The gantry frame (411) is equipped with the outer spherical square bearing B (441) by external hexagonal bolts. The two ends of the hexagonal bar (44) are respectively inserted into the outer spherical square bearing B (441). The end face of the hexagonal bar (44) is equipped with the stainless steel handwheel B (442) by external hexagonal bolts.

7. The belt pressing device for a flexible adjustable belt conveyor according to claim 6, characterized in that, The stainless steel handwheel A (432) is connected to the double trapezoidal lead screw (43) with a square opening at the end face, and the stainless steel handwheel B (442) is connected to the hexagonal bar (44) with a square opening at the end face.

8. The belt pressing device for a flexible adjustable belt conveyor according to claim 7, characterized in that, The pressure roller assembly (49) includes a pressure roller body (491), a deep groove ball bearing B (492), and a pressure roller shaft (493). The lower end of the upright plate (474) is connected to the pressure roller shaft (493) by an external hex bolt. The pressure roller shaft (493) passes through the pressure roller body (491). Deep groove ball bearings B (492) are installed on both sides of the pressure roller body (491). A collar of the pressure roller shaft (493) is provided between the deep groove ball bearings B (492) and the upright plate (474).

9. The belt pressing device for a flexible adjustable belt conveyor according to claim 8, characterized in that, The tensioning assembly (48) includes a tripod (481), a spring (482), a trapezoidal tensioning screw (483), a trapezoidal nut (484), a spherical bearing (485), and a rotating shaft (486). The tripod (481) is connected to the slider (45) by an external hex bolt. One end of the trapezoidal tensioning screw (483) passes through the slot of the tripod (481) and is connected to the upright plate (474) of the pressure roller body (491) through the spherical bearing (485). A rotating shaft (486) and a collar are provided between the spherical bearing (485) and the upright plate (474). The rotating shaft (486) is connected to the upright plate (474) by an external hex bolt. A spring (482) is installed at the other end of the trapezoidal tensioning screw (483) through a trapezoidal nut (484). Large flat washers are provided at the contact positions of the spring (482) with the tripod (481) and the trapezoidal nut (484). A cotter pin is provided at the tail of the trapezoidal tensioning screw (483).

10. The belt pressing device for a flexible adjustable belt conveyor according to claim 9, characterized in that, The crossbeam (412) and the gantry frame (411) are connected together by external hex bolts.

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