Novel pinch roller device

Abstract

The utility model relates to a novel pinch roller device. The pinch roller solves the technical problem that an existing pinch roller is prone to causing flange damage and the like. Comprising a belt pressing wheel shaft, the two ends of the belt pressing wheel shaft are rotationally arranged on bearing seats respectively, a belt pressing wheel assembly is arranged on the belt pressing wheel shaft and provided with two outer pressing wheels fixedly arranged at the two ends of the belt pressing wheel shaft through key installation structures, and an inner belt wheel is arranged between the two outer pressing wheels. The inner belt wheel is arranged on the pressing belt wheel shaft in a circumferential rotating mode through a rotating installation structure, the inner belt wheel is of an integrated cylindrical structure, the two ends of the inner belt wheel extend to the sides, close to each other, of the outer pressing wheels respectively, and gaps are formed between the inner belt wheel and the outer pressing wheels. The belt pressing wheel has the advantages that the inner belt wheel is connected with the belt pressing wheel shaft through the rotary mounting structure, so that different instantaneous speeds exist between the inner belt wheel and the outer belt pressing wheel, friction to the flanges is reduced, and the service life is prolonged. The inner belt wheel abuts against the two ends of the flanges through the middle wheel pipe, the rotating speed of the flanges at the two ends can be guaranteed, and damage is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt-pressing wheels, and in particular relates to a novel belt-pressing wheel device. Background Art

[0002] In the material transportation industry, especially for new fuel substitution, cement kilns are using high-angle belt conveyors to transport waste fabrics, straw, bark, etc. to replace coal resources, so as to facilitate comprehensive energy utilization and reduce carbon emissions. In order to reduce the space layout size, high-angle belt conveyors often use a larger inclination, S-shaped, 90-degree layout, which is often the most space-saving, but this type of layout will turn in the concave and convex arc sections, and a belt pressure wheel is needed to press the belt to achieve the purpose of turning; Figure 1 , Figure 2 As shown, in actual applications, the pressure roller assembly 3 is made into an integral structure and connected to the shaft by a chain. As a result, the pressure roller assembly 3 presses the base belt 7 and the skirt of the flange 8. The pressure roller assembly 3 rotates at a certain speed, but when rotating around the pressure roller assembly 3, the base belt 7 and the flange 8 of the wavy flange belt actually have different instantaneous speeds. Therefore, an instantaneous speed difference is generated during the movement. This speed difference will generate a large friction force at the base belt 7 and the flange 8, causing the flange 8 to wear and the belt to be particularly damaged.

[0003] In order to solve the deficiencies of the prior art, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a belt-pressing pulley device for a large-angle belt conveyor [201320001581.1], which is installed on the frame of the conveyor and includes two shaft seats relatively arranged on the frame, and the shaft seats are respectively installed with an inner pressure pulley and an outer pressure pulley, the diameter of the inner pressure pulley is smaller than the diameter of the outer pressure pulley, and the inner pressure pulley and the outer pressure pulley are respectively rotatably installed on the shaft seats.

[0004] The above scheme solves the problem of damage to the flange caused by the existing pressure pulley to a certain extent, but the scheme still has many shortcomings. For example, the inner pressure pulleys are respectively arranged at the two ends of the flange and are independently arranged, which easily leads to inconsistent instantaneous speeds at the two ends of the flange, resulting in damage to the flange and reducing the service life. When the existing inner pressure pulley works in the concave arc section, the material rolls between the inner pressure pulleys, and the dust generated by the rolling of the material will cause the bearing to be contaminated, reducing the service life of the bearing; and when the inner pressure pulley works in the convex arc section, the contact area between the inner pressure pulley and the flange is too small, and when a flange belt with a larger width is used, it may cause belt collapse, reducing the transmission efficiency. Summary of the invention

[0005] The purpose of the utility model is to provide a new belt pressing wheel device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a new type of belt-pushing roller device, including a belt-pushing roller shaft, wherein the two ends of the belt-pushing roller shaft are respectively rotatably arranged on the bearing seats, and the belt-pushing roller shaft is provided with a belt-pushing roller assembly, and the belt-pushing roller assembly has two outer pressure wheels fixedly arranged at the two ends of the belt-pushing roller shaft by a key mounting structure, and an inner belt wheel is arranged between the two outer pressure wheels, and the inner belt wheel is rotatably arranged on the belt-pushing roller shaft by a rotating mounting structure, and the inner belt wheel is an integrated cylindrical structure, and the two ends of the inner belt wheel respectively extend to the side where the outer pressure wheel is close to each other and there is a gap between the inner belt wheel and the outer pressure wheel, and the gap can prevent friction between the inner belt wheel and the outer pressure wheel, thereby ensuring rotation stability.

[0007] In the above-mentioned new type of belt pulley device, the two outer belt pulleys are of the same size and shape, and the diameter of the outer belt pulley is larger than the diameter of the inner belt pulley, which can ensure that the outer belt pulley is stably set on the base belt, and the inner belt pulley is stably rotated on the rib, ensuring the rotation stability of the outer belt pulley and the inner belt pulley.

[0008] In the above-mentioned new type of belt pressure roller device, the two outer pressure rollers are symmetrically arranged with the axial midpoint of the belt pressure roller, and the gaps between the two outer pressure rollers and the inner belt roller are equal. The equal gaps can control the spacing between the two outer pressure rollers, ensuring that the outer pressure rollers only rotate on the base belt and do not affect the rotation of the retaining edge, thereby improving the service life of the high-angle conveyor belt.

[0009] In the above-mentioned new type of belt pressure roller device, the outer pressure roller includes an outer pressure roller hub sleeve mounted on the belt pressure roller shaft, and the outer circumferential outer side of the outer pressure roller hub sleeve is fixedly sleeved with adjacent wheel discs and hub discs, the wheel disc is located on the side of the outer pressure roller close to the inner belt roller and the hub disc is located on the side of the outer pressure roller away from the inner belt roller, and the hub disc is provided with a plurality of through holes, and an outer pressure roller rim is provided between the circumferential outer side of the wheel disc and the circumferential outer side of the hub disc, and ventilation can be improved through the through holes, thereby improving the heat dissipation efficiency of the outer pressure roller, and the hollow structure between the wheel disc and the hub disc can further reduce weight and improve work efficiency.

[0010] In the above-mentioned new belt pressure roller device, the two sides of the outer pressure wheel rim are flush with the wheel disc and the hub respectively, and the outer pressure wheel hub sleeve, wheel disc, hub and outer pressure wheel rim are fixedly connected or connected as an integrated structure, which can effectively improve the structural strength and increase the service life.

[0011] In the above-mentioned new type of belt pulley device, the key mounting structure includes a first keyway arranged on the outside of the belt pulley shaft, and a second keyway corresponding to the first keyway is arranged on the circumferential inner side of the outer pressure wheel hub sleeve, and the first keyway is connected to the second keyway via a connecting key. The first keyway, the second keyway and the connecting key can improve the synchronous rotation accuracy between the belt pulley shaft and the outer pressure wheel, and can facilitate the loading and unloading efficiency between the outer pressure wheel and the belt pulley shaft.

[0012] In the above-mentioned new belt pulley device, the inner pulley includes a cylindrical intermediate wheel tube, and an annular inner plate is provided on the inner side of both ends of the intermediate wheel tube, and the inner plate is rotatably arranged on the belt pulley shaft through the above-mentioned rotating mounting structure. The inner plate can improve the stability of the intermediate wheel tube and ensure the rotation stability of the inner pulley.

[0013] In the above-mentioned new type of belt pulley device, the rotating mounting structure includes an inner bearing seat arranged on the circumferential inner side of the inner plate, the belt pulley shaft is passed through the inner bearing seat and is rotatably connected to the inner bearing seat through a bearing, and an inner cover is provided on one side of the inner bearing seat through mounting bolts. The inner cover can improve the loading and unloading efficiency of the bearing, and the bearing can enable the inner pulley and the belt pulley shaft to have different instantaneous speeds, which can effectively reduce the friction damage of the inner pulley to the retaining edge and improve the service life.

[0014] In the above-mentioned novel belt pulley device, the intermediate wheel tube, inner web plate and inner bearing seat are fixedly connected or connected as an integrated structure, which can improve the overall structural strength of the inner pulley, ensure rotation stability and increase service life.

[0015] In the above-mentioned novel belt-pressing roller device, the bearing seats are symmetrically arranged with respect to the middle point of the belt-pressing roller axis, and the diameter of the belt-pressing roller axis gradually decreases from the middle to both ends.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. There is a gap between the outer pressure wheel and the inner pulley, which can ensure that the outer pressure wheel rotates on the base belt without friction with the flange, thereby improving the service life of the flange.

[0018] 2. The outer pressure wheel rotates synchronously with the belt pulley shaft through the key installation structure, and the inner belt pulley is connected to the belt pulley shaft through the rotating installation structure, which can make the inner belt pulley and the outer pressure wheel have different instantaneous speeds, further reduce the friction on the rib and improve the service life.

[0019] 3. The inner pulley is against the ribs at both ends of the high-angle conveyor belt through the middle wheel tube, which can ensure the rotation speed of the ribs at both ends, ensure the rotation stability and reduce damage.

[0020] 4. The intermediate wheel tube can protect the bearing, ensure the lubrication effect of the bearing and increase its service life.

[0021] 5. The intermediate wheel tube can increase the contact area with the rib, effectively preventing belt collapse and ensuring operational stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the prior art.

[0023] Figure 2 It is a structural schematic diagram of an existing large-angle conveyor belt.

[0024] Figure 3 It is a structural schematic diagram of the utility model.

[0025] Figure 4 It is a structural sectional view of the utility model.

[0026] Figure 5 It is a structural explosion diagram of the utility model.

[0027] In the figure: a belt pressure wheel shaft 1, a bearing seat 2, a belt pressure wheel assembly 3, an outer pressure wheel 31, an outer pressure wheel hub sleeve 311, a wheel disc 312, a hub disc 313, a through hole 314, an outer pressure wheel rim 315, an inner belt wheel 32, an intermediate wheel tube 321, an inner web 322, a key mounting structure 4, a first keyway 41, a second keyway 42, a connecting key 43, a rotating mounting structure 5, an inner bearing seat 51, a bearing 52, a mounting bolt 53, an inner cover 54, a gap 6, a base belt 7, and a rib 8. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figure 2 , Figure 3 , Figure 4As shown, a novel belt-pressing roller device comprises a belt-pressing roller shaft 1, both ends of which are rotatably arranged on a bearing seat 2, a belt-pressing roller assembly 3 is arranged on the belt-pressing roller shaft 1, and the belt-pressing roller shaft 1 can be rotated by the bearing seat 2, and the belt-pressing roller shaft 1 can drive the belt-pressing roller assembly 3 to rotate, the belt-pressing roller assembly 3 has two outer pressure wheels 31 fixedly arranged at both ends of the belt-pressing roller shaft 1 by a key mounting structure 4, the key mounting structure 4 can transmit the rotation force of the belt-pressing roller shaft 1 to the outer pressure wheels 31, the rotation accuracy can be improved, and the loading and unloading efficiency can be improved, the outer pressure wheels 31 are rotatably arranged on the base belt 7 of the large-angle conveyor belt, an inner belt wheel 32 is arranged between the two outer pressure wheels 31, and the inner belt wheel 3 The rotating mounting structure 5 is circumferentially rotatably arranged on the belt-pressing roller shaft 1, and the rotating mounting structure 5 can make the inner belt pulley 32 and the belt-pressing roller shaft 1 have different instantaneous speeds. The inner belt pulley 32 is an integrated cylindrical structure, which can ensure that the instantaneous speeds of the two ends of the inner belt pulley 32 are consistent, and the inner belt pulley 32 is rotatably arranged on the rib 8. The different instantaneous speeds between the inner belt pulley 32 and the belt-pressing roller shaft 1 can effectively reduce the wear of the rib conveyor belt and improve the service life. The two ends of the inner belt pulley 32 extend to the side of the outer pressure wheel 31 close to each other, and there is a gap 6 between the inner belt pulley 32 and the outer pressure wheel 31. The gap 6 can prevent friction between the inner belt pulley 32 and the outer pressure wheel 31, thereby ensuring the rotation stability.

[0030] Specifically, the two outer pressure wheels 31 are of the same size and shape, and the diameter of the outer pressure wheel 31 is larger than the diameter of the inner belt wheel 32, which can ensure that the outer pressure wheel 31 is stably set on the base belt 7, and the inner belt wheel 32 is stably rotated on the retaining edge 8, thereby ensuring the rotation stability of the outer pressure wheel 31 and the inner belt wheel 32.

[0031] Among them, the two outer pressure wheels 31 are symmetrically arranged with the belt pressure wheel shaft 1 toward the midpoint, and the gap 6 between the two outer pressure wheels 31 and the inner belt wheel 32 is equal. The equal gap 6 can control the spacing between the two outer pressure wheels 31, ensuring that the outer pressure wheels 31 only rotate on the base belt 7 and do not affect the rotation of the retaining edge 8, thereby improving the service life of the high-angle conveyor belt.

[0032] like Figure 3 , Figure 4 , Figure 5As shown, the outer pressure wheel 31 includes an outer pressure wheel hub sleeve 311 sleeved on the pressure wheel shaft 1, and the outer pressure wheel hub sleeve 311 is fixedly sleeved on the circumferential outer side with a wheel disc 312 and a hub 313 arranged adjacently, the wheel disc 312 is located on the side of the outer pressure wheel 31 close to the inner pulley 32 and the hub 313 is located on the side of the outer pressure wheel 31 away from the inner pulley 32, and a plurality of through holes 314 are provided on the hub 313, and an outer pressure wheel rim 315 is provided between the circumferential outer side of the wheel disc 312 and the circumferential outer side of the hub 313, and the through holes 314 can improve ventilation and improve the heat dissipation efficiency of the outer pressure wheel 31, and the hollow structure between the wheel disc 312 and the hub 313 can further reduce weight and improve work efficiency.

[0033] Furthermore, the two sides of the outer pressure wheel rim 315 are flush with the wheel disc 312 and the hub 313 respectively, ensuring the rotation stability of the outer pressure wheel 31, and the outer pressure wheel hub sleeve 311, the wheel disc 312, the hub 313 and the outer pressure wheel rim 315 are fixedly connected or connected as an integrated structure, which can effectively improve the structural strength and increase the service life.

[0034] Among them, the key installation structure 4 includes a first key groove 41 arranged on the outside of the belt pulley shaft 1, and a second key groove 42 corresponding to the first key groove 41 is arranged on the circumferential inner side of the outer pressure wheel hub sleeve 311, and the first key groove 41 is connected to the second key groove 42 by a connecting key 43. The first key groove 41 and the second key groove 42 and the connecting key 43 can improve the synchronous rotation accuracy between the belt pulley shaft 1 and the outer pressure wheel 31, and can facilitate the loading and unloading efficiency between the outer pressure wheel 31 and the belt pulley shaft 1.

[0035] Combination Figure 2 , Figure 3 , Figure 4 As shown, the inner pulley 32 includes a cylindrical intermediate wheel tube 321, and an annular inner plate 322 is provided on the circumferential inner side of both ends of the intermediate wheel tube 321, and the inner plate 322 is rotatably set on the belt pulley shaft 1 through the above-mentioned rotating mounting structure 5. The inner plate 322 can improve the stability of the intermediate wheel tube 321 and ensure the rotation stability of the inner pulley 32. The intermediate wheel tube 321 can ensure the contact area between the inner pulley 32 and the retaining edge 8 when the inner pulley 32 works in the convex arc section, thereby effectively avoiding the belt collapse phenomenon and improving the operation stability.

[0036] Among them, the rotating installation structure 5 includes an inner bearing seat 51 arranged on the inner side of the inner plate 322 in the circumferential direction. The belt pulley shaft 1 is inserted into the inner bearing seat 51 and is rotatably connected to the inner bearing seat 51 through the bearing 52. The bearing 52 can be easily installed through the inner bearing seat 51, and an inner cover 54 is provided on one side of the inner bearing seat 51 through a mounting bolt 53. The inner cover 54 can improve the loading and unloading efficiency of the bearing 52. The bearing 52 can make the inner pulley 32 and the belt pulley shaft 1 have different instantaneous speeds, which can effectively reduce the friction damage of the inner pulley 32 to the retaining edge 8 and improve the service life. The intermediate wheel tube 321 can make the material roll on the outside of the intermediate wheel tube 321 when the inner pulley 32 works in the concave arc section, which can protect the bearing 52 in the intermediate wheel tube 321, ensure the lubrication effect of the bearing 52, and improve the service life of the bearing 52.

[0037] Specifically, the intermediate wheel tube 321, the inner web 322 and the inner bearing seat 51 are fixedly connected or connected as an integrated structure, which can improve the overall structural strength of the inner pulley 32, ensure rotation stability, and increase service life.

[0038] Combination Figure 3 , Figure 4 As shown, the bearing seat 2 is symmetrically arranged with the belt pulley shaft 1 toward the middle point, and the diameter of the belt pulley shaft 1 gradually decreases from the middle to both ends.

[0039] The principle of this embodiment is: Figure 2 , Figure 3 , Figure 4 As shown, the outer pressure wheel 31 rotates synchronously with the belt pulley shaft 1 through the key mounting structure 4, and the outer pressure wheel 31 rotates while pressing on the base belt 7, and there is a gap 6 between the inner pulley 32 and the outer pressure wheel 31, and the inner pulley 32 is rotatably set on the belt pulley shaft 1 through the rotating mounting structure 5, and the inner pulley 32 is rotatably set on the retaining edge 8, and the rotating mounting structure 5 can make the inner pulley 32 and the outer pressure wheel 31 have different instantaneous speeds, which can effectively reduce the wear on the retaining edge 8 and improve the service life, and the contact area between the inner pulley 32 and the retaining edge 8 can be increased through the intermediate wheel tube 321, thereby improving the running stability, and the cylindrical intermediate wheel tube 321 can effectively protect the bearing 52 in the intermediate wheel tube 321, thereby improving the service life of the bearing 52.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0041] Although the present invention uses more terms such as the belt pressure roller shaft 1, the bearing seat 2, the belt pressure roller assembly 3, the outer pressure roller 31, the outer pressure roller hub sleeve 311, the wheel disc 312, the hub disc 313, the through hole 314, the outer pressure roller rim 315, the inner belt pulley 32, the intermediate wheel tube 321, the inner web plate 322, the key installation structure 4, the first keyway 41, the second keyway 42, the connecting key 43, the rotating installation structure 5, the inner bearing seat 51, the bearing 52, the mounting bolt 53, the inner cover 54, the gap 6, the base belt 7, the rib 8, etc., the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A novel belt-pressing roller device, comprising a belt-pressing roller shaft (1), wherein both ends of the belt-pressing roller shaft (1) are rotatably arranged on a bearing seat (2), and a belt-pressing roller assembly (3) is arranged on the belt-pressing roller shaft (1), characterized in that: The belt pulley assembly (3) comprises two outer pressure wheels (31) fixedly arranged at the two ends of the belt pulley shaft (1) by a key mounting structure (4), an inner belt pulley (32) is arranged between the two outer pressure wheels (31), the inner belt pulley (32) is rotatably arranged on the belt pulley shaft (1) by a rotating mounting structure (5), the inner belt pulley (32) is an integrated cylindrical structure, the two ends of the inner belt pulley (32) respectively extend to the side of the outer pressure wheel (31) close to each other, and there is a gap (6) between the inner belt pulley (32) and the outer pressure wheel (31).

2. A new belt-pressing roller device according to claim 1, characterized in that: The two outer pressure wheels (31) are of the same size and shape, and the diameter of the outer pressure wheel (31) is greater than the diameter of the inner belt wheel (32).

3. A new belt-pressing roller device according to claim 1, characterized in that: The two outer pressure wheels (31) are symmetrically arranged with the belt pressure wheel shaft (1) toward the middle point, and the gaps (6) between the two outer pressure wheels (31) and the inner belt wheel (32) are equal.

4. A new belt-pressing roller device according to claim 1, 2 or 3, characterized in that: The outer pressure wheel (31) comprises an outer pressure wheel hub sleeve (311) sleeved on the pressure wheel shaft (1); the outer circumferential outer side of the outer pressure wheel hub sleeve (311) is fixedly sleeved with a wheel disc (312) and a hub (313) arranged adjacent to each other; the wheel disc (312) is located on a side of the outer pressure wheel (31) close to the inner belt wheel (32) and the hub (313) is located on a side of the outer pressure wheel (31) away from the inner belt wheel (32); the hub (313) has a plurality of through holes (314); and an outer pressure wheel rim (315) is arranged between the outer circumferential sides of the wheel disc (312) and the outer circumferential sides of the hub (313).

5. A new belt-pressing roller device according to claim 4, characterized in that: The two sides of the outer pressure wheel rim (315) are flush with the wheel disc (312) and the hub (313), respectively, and the outer pressure wheel hub sleeve (311), the wheel disc (312), the hub (313) and the outer pressure wheel rim (315) are fixedly connected or connected to form an integrated structure.

6. A new belt-pressing roller device according to claim 4, characterized in that: The key mounting structure (4) comprises a first key groove (41) arranged on the outer side of the belt pressure wheel shaft (1); a second key groove (42) corresponding to the first key groove (41) is arranged on the circumferential inner side of the outer pressure wheel hub sleeve (311); and the first key groove (41) and the second key groove (42) are connected via a connecting key (43).

7. A new belt-pressing roller device according to claim 1, characterized in that: The inner pulley (32) comprises a cylindrical intermediate wheel tube (321), and an annular inner plate (322) is provided on the inner side of both ends of the intermediate wheel tube (321), and the inner plate (322) is rotatably mounted on the belt pulley shaft (1) via the above-mentioned rotating mounting structure (5).

8. A new belt-pressing roller device according to claim 7, characterized in that: The rotating mounting structure (5) includes an inner bearing seat (51) arranged on the inner side of the inner plate (322) in the circumferential direction, the belt pulley shaft (1) is passed through the inner bearing seat (51) and is rotatably connected to the inner bearing seat (51) via a bearing (52), and an inner cover (54) is provided on one side of the inner bearing seat (51) via mounting bolts (53).

9. A new belt-pressing roller device according to claim 8, characterized in that: The intermediate wheel tube (321), the inner web plate (322) and the inner bearing seat (51) are fixedly connected or connected to form an integrated structure.

10. A novel belt-pressing roller device according to claim 1, characterized in that: The bearing seat (2) is symmetrically arranged with the belt pulley shaft (1) toward the middle point, and the diameter of the belt pulley shaft (1) gradually decreases from the middle to both ends.

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