Adjustable conveyor belt pulley

Abstract

The present invention belongs to the technical field of conveyor belt pulleys, and specifically provides an adjustable conveyor belt pulley, comprising a rotating shaft, two sets of bearing seats symmetrically rotated at both ends of the rotating shaft, two sets of belt pulleys symmetrically and movably mounted on the rotating shaft, a limiting wheel is provided on one side of the belt pulley, two sets of limiting rods are symmetrically provided on one side of the limiting wheel, the limiting rods are plugged into the bearing seats, one end of the limiting rods is fixedly connected to the wheel body, when the conveyor belt is driven, the conveyor belt drives the belt pulley to rotate together with the belt pulley, because the limiting rods are plugged into the bearing seats, the wheel body cannot rotate, and at the same time the conveyor belt will drive several sets of guide posts to rotate, and the rotating guide posts play a guiding and limiting role in the conveyor belt transmission. Compared with the prior art, the rotating guide posts reduce the friction between the side of the conveyor belt and the guide posts, thereby reducing the wear of the side of the conveyor belt and increasing the service life of the conveyor belt.

Description

Technical Field

[0001] The invention belongs to the technical field of conveyor belt pulleys, in particular to an adjustable conveyor belt pulley. Background Art

[0002] The belt conveyor in the upper batching system of a ferroalloy submerged arc furnace is a key piece of equipment in the process. Its safe and stable operation is crucial for ensuring that materials reach the designated silo for production and smelting. Therefore, the operation of the belt and the pressure pulley are crucial components of the upper batching system. The pressure pulley is a component on the belt conveyor that compresses the conveyor belt to ensure its proper operation.

[0003] Publication No. CN218260229U discloses a reversing belt pulley, relating to the field of reversing belt pulleys. The utility model comprises a frame, a conveyor belt, and a rubber corrugated rib. The top of the frame is fixed to a bearing seat via a lifting assembly. The lifting assembly comprises a fixed cylinder, a threaded tube extending through the top of the fixed cylinder, a screw mounted below the interior of the fixed cylinder, a driven bevel gear disposed on the outer surface of the screw, a rotating shaft extending through one side of the fixed cylinder, a driving bevel gear fixed to one end of the rotating shaft, a rotating shaft mounted within the bearing seat, a large wheel fixed to the outer surface of the rotating shaft via an adjustment assembly. The utility model improves the applicability of the reversing belt pulley by flexibly adjusting the height and width of the large and small wheels, facilitating installation on different conveyors and enhancing the versatility of the reversing belt pulley.

[0004] During the actual implementation of the above scheme, the small wheel is pressed on the edge of the conveyor belt, and the large wheel is located on one side of the edge of the conveyor belt. Therefore, the two sets of small wheels are used to press the conveyor belt, and the two sets of large wheels are used to guide and limit the conveyor belt to prevent the conveyor belt from deviating. However, during the conveyor belt transportation process, the conveyor belt will drive the small wheel and the large wheel to rotate together, and the rotating large wheel will generate friction with one side of the conveyor belt edge. The friction will cause the conveyor belt to wear, thereby narrowing the conveyor belt width, which not only reduces the service life of the conveyor belt, but also increases the risk of the conveyor belt deviating. For this reason, the present invention provides an adjustable conveyor belt pressure wheel. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: the adjustable conveyor belt pulley of the present invention comprises a rotating shaft, two sets of bearing seats symmetrically rotated at both ends of the rotating shaft, two sets of belt pulleys symmetrically and movably mounted on the rotating shaft, a limiting wheel is provided on one side of the belt pulley, and two sets of limiting rods are symmetrically provided on one side of the limiting wheel, the limiting wheel comprises: a wheel body, the wheel body is rotated to the belt pulley, a mounting hole is provided on the wheel body, and a plurality of guide columns rotated in the mounting hole, the limiting rod is plugged into the bearing seat, and one end of the limiting rod is fixedly connected to the wheel body;

[0007] Compared with the prior art, the rotating guide post reduces the friction between the side of the conveyor belt and the guide post, thereby reducing the wear of the side of the conveyor belt and increasing the service life of the conveyor belt.

[0008] Preferably, the rotating shaft includes: a shaft body, two sets of belt-pressing rollers symmetrically sleeved on the shaft body, a double-threaded screw screwed into the shaft body, two sets of screw sleeves screwed into the double-threaded screws, and a knob assembly fixedly mounted in the middle of the double-threaded screws, the screw sleeves being slidably connected to the inner cavity of the shaft body, and the screw sleeves being fixedly connected to the inner ring of the belt-pressing roller;

[0009] Turning the knob assembly rotates the double-threaded screw. As the double-threaded screw rotates, the two sets of screw sleeves will move toward or away from each other along the inner cavity of the shaft. At the same time, the screw sleeves will drive the belt pressure rollers to slide along the shaft, causing the two sets of belt pressure rollers to move toward or away from each other, thereby adjusting the distance between the two sets of belt pressure rollers, so that the device can be used for conveyor belts of different widths.

[0010] Preferably, the knob assembly includes: a knob housing, the knob housing is sleeved with the middle part of the double-threaded screw, two sets of rotating disks symmetrically screwed on both ends of the knob housing, the rotating disks are fixedly installed in the shaft body, the rotating disks are screwed on the double-threaded screw, a first gear disk fixedly connected to one end of the rotating disk, a second gear disk engaged with the first gear disk, a spring arranged on the back side of the second gear disk, and a fixing plate arranged between the two sets of springs, the fixing plate is fixedly installed in the knob housing, the double-threaded screw is fixedly connected in the fixing plate, two sets of rectangular bars are symmetrically welded in the middle part of the double-threaded screw, two sets of rectangular grooves are symmetrically arranged in the inner ring of the second gear disk, the rectangular grooves are slidably connected to the rectangular bars, and the spring is sleeved on the double-threaded screw;

[0011] Under the action of the rebound force of the spring, the second toothed disc engages with the first toothed disc again. The mutual meshing force between the second toothed disc and the first toothed disc limits the rotation of the double-threaded screw. Without turning the knob assembly, the double-threaded screw cannot rotate easily, thereby avoiding the position deviation of the belt pressure roller.

[0012] Preferably, the bearing seat includes: a support frame, two groups of guide holes are symmetrically provided on the support frame, the guide holes are slidably connected to the limit rods, and the bearing body is embedded in the support frame, the inner ring of the bearing body is fixedly connected to the inner ring of the shaft body, a sealing plate is fixedly installed on one side of the bearing body, a sealing sleeve is fixedly installed on the other side of the bearing body, a movable plate is screwed in the sealing sleeve, a pressure plate for inserting the movable plate, and a screw screwed to the pressure plate, a threaded hole is provided on the pressure plate, a bolt plug is screwed in the threaded hole, a second sealing rubber ring is sleeved on the pressure plate and the movable plate, the pressure plate and the movable plate are both slidably connected to the inner cavity of the sealing sleeve together with the second sealing rubber ring, the movable plate and the second sealing rubber ring are screwed to the inner cavity of the sealing sleeve, a plurality of groups of oil nozzles are arranged at equal angles on one side of the movable plate, a first sealing rubber ring is arranged on the inner ring of the sealing plate, two groups of rotating grooves are symmetrically provided at both ends of the shaft body, the end of the movable plate is screwed to the rotating groove, and one end of the screw is screwed to the bottom of the rotating groove;

[0013] Turn the screw. As the screw rotates, the pressure plate and the second sealing rubber ring move along the inner cavity of the sealing sleeve. As the pressure plate moves, the lubricating oil will be sprayed onto the bearing body through the oil nozzle. Since several groups of oil nozzles are arranged at equal angles on one side of the bearing body, the lubricating oil is sprayed on the bearing body relatively evenly. Secondly, since the sealing sleeve and the sealing plate block both sides of the bearing body, the lubricating oil is prevented from being thrown out, thereby avoiding waste of lubricating oil.

[0014] Preferably, two sets of spiral chutes are symmetrically provided in the inner ring of the movable plate, and two sets of pins are symmetrically provided on the end of the pressing plate, and the pins are slidably connected to the spiral chutes;

[0015] The two sets of pins at the end of the pressure plate slide along the two sets of spiral grooves. Under the guidance of the spiral grooves, the movable plate and the second sealing rubber ring rotate in the inner cavity of the sealing sleeve. At the same time, the movable plate drives several sets of oil nozzles to rotate, so that the oil nozzles rotate during the oil injection process, so that the lubricating oil is sprayed on the bearing body more evenly.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. When the conveyor belt is driven, the conveyor belt drives the pressure roller to rotate together with the pressure roller. Since the limit rod is inserted into the bearing seat, the wheel body cannot rotate. At the same time, the conveyor belt will drive several groups of guide columns to rotate. The rotating guide columns play a guiding and limiting role in the conveyor belt transmission. Compared with the existing technology, the rotating guide columns reduce the friction between the side of the conveyor belt and the guide columns, thereby reducing the wear of the side of the conveyor belt and increasing the service life of the conveyor belt.

[0018] 2. When it is necessary to adjust the distance between the two sets of belt pressure rollers, turn the knob assembly to rotate the double-threaded screw. As the double-threaded screw rotates, the two sets of screw sleeves will move toward or away from each other along the inner cavity of the shaft. At the same time, the screw sleeves will drive the belt pressure rollers to slide along the shaft, causing the two sets of belt pressure rollers to move toward or away from each other, thereby adjusting the distance between the two sets of belt pressure rollers, so that the device can be used for conveyor belts of different widths.

[0019] 3. When the knob assembly is turned, the knob housing will rotate together with the fixed plate, and the fixed plate will drive the double-threaded screw to rotate, thereby achieving the above-mentioned adjustment of the spacing between the two sets of pressure rollers. At the same time, the double-threaded screw rotates the second gear plate through the rectangular bar and the rectangular groove. As the second gear plate rotates, the teeth on the second gear plate will squeeze the tooth grooves on the first gear plate. Since the first gear plate is fixed, the extrusion thrust acts on the rotation of the second gear plate, causing the second gear plate to retreat along the double-threaded screw and compress the spring until the second gear plate engages with the first gear plate again under the rebound force of the spring. The mutual meshing force between the second gear plate and the first gear plate limits the rotation of the double-threaded screw. Without turning the knob assembly, the double-threaded screw cannot be easily rotated, thereby avoiding the position deviation of the pressure roller.

[0020] 4. When the bearing body needs to be lubricated, screw the bolt plug to open the threaded hole, and then use the oil gun to press the solidified lubricating oil into the sealing sleeve through the threaded hole, and position it between the movable plate and the pressure plate until the space between the movable plate and the pressure plate is filled with lubricating oil. Then seal the threaded hole with the bolt plug and turn the screw. As the screw rotates, the pressure plate and the second sealing rubber ring move along the inner cavity of the sealing sleeve. As the pressure plate moves, the lubricating oil will be sprayed onto the bearing body through the oil nozzle. Since several groups of oil nozzles are arranged at equal angles on one side of the bearing body, the lubricating oil is sprayed onto the bearing body relatively evenly. Secondly, since the sealing sleeve and the sealing plate block both sides of the bearing body, the lubricating oil is prevented from being thrown out, thereby avoiding waste of lubricating oil.

[0021] 5. When the pressure plate and the second sealing rubber ring move along the inner cavity of the sealing sleeve, the end of the pressure plate will slide along the inner ring of the movable plate. At the same time, the two groups of pins at the end of the pressure plate slide along the two groups of spiral grooves. Under the guidance of the spiral grooves, the movable plate and the second sealing rubber ring rotate in the inner cavity of the sealing sleeve. At the same time, the movable plate drives several groups of oil nozzles to rotate, so that the oil nozzles rotate during the oil injection process, so that the lubricating oil is sprayed on the bearing body more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2It is a schematic diagram of the combination of the pressure wheel, the limiting wheel and the limiting rod of the present invention.

[0025] Figure 3 It is a cross-sectional schematic diagram of the combination of the rotating shaft and the pinch roller of the present invention.

[0026] Figure 4 It is a schematic diagram of the combination of the shaft body, double-threaded screw and cross-section knob assembly of the present invention.

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0028] Figure 6 Schematic diagram of the combination of the second toothed disc and the rectangular bar of the present invention.

[0029] Figure 7 It is a cross-sectional schematic diagram of the shaft body and bearing seat combination of the present invention.

[0030] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0031] Figure 9 This is a schematic diagram of the movable plate, pressure plate and screw assembly of the present invention.

[0032] In the figure: 1, rotating shaft; 2, bearing seat; 3, belt pulley; 4, limiting wheel; 5, limiting rod; 401, wheel body; 402, mounting hole; 403, guide column; 101, shaft body; 1011, rotating groove; 102, double-threaded screw; 1021, rectangular bar; 103, screw sleeve; 104, knob assembly; 1041, knob housing; 1042, rotating disc; 1043, first tooth disc; 1044, second tooth disc; 41, rectangular Groove; 1045, spring; 1046, fixed plate; 201, support frame; 2011, guide hole; 202, bearing body; 203, sealing plate; 2031, first sealing rubber ring; 204, sealing sleeve; 205, movable plate; 2051, fuel injector; 2052, spiral slide; 206, pressure plate; 2061, threaded hole; 2062, bolt plug; 2063, pin; 2065, second sealing rubber ring; 207, screw. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] Example 1

[0035] like Figure 1 and Figure 2As shown, an adjustable conveyor belt pulley described in an embodiment of the present invention includes a rotating shaft 1, two sets of bearing seats 2 are symmetrically screwed on both ends of the rotating shaft 1, two sets of belt pulleys 3 are symmetrically and movably installed on the rotating shaft 1, a limiting wheel 4 is provided on one side of the belt pulley 3, and two sets of limiting rods 5 are symmetrically provided on one side of the limiting wheel 4, and the limiting wheel 4 includes: a wheel body 401, the wheel body 401 is screwed on the belt pulley 3, a mounting hole 402 is provided on the wheel body 401, and a plurality of guide columns 403 are screwed in the mounting hole 402, the limiting rod 5 is inserted into the bearing seat 2, and one end of the limiting rod 5 is fixedly connected to the wheel body 401.

[0036] Specifically, two groups of pressure rollers 3 are symmetrically pressed on the two edges of the conveyor belt, and two groups of limiting rollers 4 are symmetrically distributed on both sides of the conveyor belt. When the conveyor belt is driven, the conveyor belt drives the pressure roller 3 to rotate together with the pressure roller 3. Since the limiting rod 5 is connected to the bearing seat 2, the wheel body 401 cannot rotate. At the same time, the conveyor belt will drive several groups of guide columns 403 to rotate. The rotating guide columns 403 play a guiding and limiting role in the conveyor belt transmission. Compared with the existing technology, the rotating guide columns 403 reduce the friction between the side of the conveyor belt and the guide columns 403, thereby reducing the wear of the side of the conveyor belt and increasing the service life of the conveyor belt.

[0037] like Figure 3 As shown, the rotating shaft 1 includes: a shaft body 101, two sets of belt-pressing rollers 3 symmetrically sleeved on the shaft body 101, a double-threaded screw 102 screwed into the shaft body 101, two sets of screw sleeves 103 screwed to the double-threaded screw 102, and a knob assembly 104 fixedly installed in the middle of the double-threaded screw 102, the screw sleeve 103 is slidably connected to the inner cavity of the shaft body 101, and the screw sleeve 103 is fixedly connected to the inner ring of the belt-pressing roller 3.

[0038] Specifically, the threads in the two sets of screw sleeves 103 have opposite rotation directions. Since the widths of the conveyor belts are different in actual use, if the spacing between the two sets of pressure rollers 3 cannot be adjusted, the device will not be suitable for conveyor belts of different widths. When it is necessary to adjust the spacing between the two sets of pressure rollers 3, the knob assembly 104 is turned to rotate the double-threaded screw 102. As the double-threaded screw 102 rotates, the two sets of screw sleeves 103 will move toward or away from each other along the inner cavity of the shaft body 101. At the same time, the screw sleeves 103 will drive the pressure rollers 3 to slide along the shaft body 101, causing the two sets of pressure rollers 3 to move toward or away from each other, thereby realizing the adjustment of the spacing between the two sets of pressure rollers 3, so that the device is suitable for conveyor belts of different widths.

[0039] like Figures 3 to 6As shown, the knob assembly 104 includes: a knob housing 1041, the knob housing 1041 is sleeved on the middle part of the double-threaded lead screw 102, two sets of rotating discs 1042 are symmetrically screwed on both ends of the knob housing 1041, the rotating discs 1042 are fixedly installed in the shaft body 101, the rotating discs 1042 are screwed on the double-threaded lead screw 102, a first toothed disc 1043 fixedly connected to one end of the rotating disc 1042, a second toothed disc 1044 engaged with the first toothed disc 1043, and a second toothed disc 1044 is arranged on the second toothed disc 1044. The spring 1045 on the back side and the fixed plate 1046 arranged between the two groups of springs 1045 are fixedly installed in the knob housing 1041. The double-threaded screw 102 is fixedly connected inside the fixed plate 1046. Two groups of rectangular bars 1021 are symmetrically welded in the middle of the double-threaded screw 102. Two groups of rectangular grooves 41 are symmetrically arranged in the inner ring of the second toothed disc 1044. The rectangular grooves 41 are slidingly connected to the rectangular bars 1021. The spring 1045 is sleeved on the double-threaded screw 102.

[0040] Specifically, the above adjustment of the distance between the two groups of belt-pressing rollers 3 is achieved by rotating the double-threaded screw 102. Since the device is installed on the conveyor, vibration will be generated during the operation of the conveyor, and the vibration will cause the engagement of the double-threaded screw 102 and the screw sleeve 103 to loosen. In the case that the double-threaded screw 102 has no limit, the risk of position deviation of the belt-pressing roller 3 will increase. Therefore, when the knob assembly 104 is turned, the knob housing 1041 will rotate together with the fixed plate 1046, and the fixed plate 1046 will drive the double-threaded screw 102 to rotate, thereby achieving the above adjustment of the distance between the two groups of belt-pressing rollers 3. At the same time, the double-threaded screw 102 rotates the second toothed disc 1044 through the rectangular bar 1021 and the rectangular groove 41. As the second toothed disc 1044 rotates, As the toothed disc 1044 rotates, the teeth on the second toothed disc 1044 squeeze the tooth grooves on the first toothed disc 1043. Since the first toothed disc 1043 is fixed, the extrusion thrust acts on the rotation of the second toothed disc 1044, causing the second toothed disc 1044 to retreat along the double-threaded screw 102 and compress the spring 1045 until the second toothed disc 1044 engages with the first toothed disc 1043 again under the rebound force of the spring 1045. The mutual engagement force between the second toothed disc 1044 and the first toothed disc 1043 limits the rotation of the double-threaded screw 102. Without turning the knob assembly 104, the double-threaded screw 102 cannot rotate easily, thereby avoiding the position offset of the pressure roller 3.

[0041] Example 2

[0042] like Figures 7 to 9As shown, compared with Example 1, another embodiment of the present invention is: the bearing seat 2 includes: a support frame 201, two groups of guide holes 2011 are symmetrically opened on the support frame 201, the guide holes 2011 are slidably connected to the limit rod 5, a bearing body 202 embedded in the support frame 201, the inner ring of the bearing body 202 is fixedly connected to the inner ring of the shaft 101, a sealing plate 203 is fixedly installed on one side of the bearing body 202, a sealing sleeve 204 is fixedly installed on the other side of the bearing body 202, a movable plate 205 screwed into the sealing sleeve 204, a pressure plate 206 inserted into the movable plate 205, and a screw 207 screwed into the pressure plate 206. A threaded hole 2061 is provided on the pressure plate 206, and a bolt plug 2062 is screwed into the threaded hole 2061. A second sealing rubber ring 2065 is sleeved on both the pressure plate 206 and the movable plate 205. The pressure plate 206 and the second sealing rubber ring 2065 are slidably connected to the inner cavity of the sealing sleeve 204. The movable plate 205 and the second sealing rubber ring 2065 are screwed into the inner cavity of the sealing sleeve 204. Several groups of fuel nozzles 2051 are arranged at equal angles on one side of the movable plate 205, and a first sealing rubber ring 2031 is arranged on the inner ring of the sealing plate 203. Two groups of rotating grooves 1011 are symmetrically arranged at both ends of the shaft body 101. The end of the movable plate 205 is screwed into the rotating groove 1011, and one end of the screw 207 is screwed into the bottom of the rotating groove 1011.

[0043] Specifically, the blocking sleeve 204 and the blocking plate 203 are fixedly mounted on both sides of the support frame 201 respectively. The blocking sleeve 204 and the blocking plate 203 are made of transparent plastic. A bearing is arranged in the existing bearing seat 2, and the rotation connection with the rotating shaft 1 is achieved through the bearing. In actual use, the bearing needs to be smeared with lubricating oil. The existing lubricating oil is directly applied to the bearing by hand. However, during the rotation of the rotating shaft 1, the rotating shaft 1 will drive the inner ring of the bearing and the steel ball to rotate. The centrifugal force generated by the rotation will throw the lubricating oil out of the bearing, so that the applied lubricating oil cannot lubricate the bearing for a long time, resulting in a large amount of lubricating oil being wasted. Therefore, when it is necessary to lubricate the bearing body 202, the bolt plug 2062 is screwed to open the threaded hole 2061, and then the oil gun will pass the solidified lubricating oil through the threaded hole 206 1 is pressed into the sealing sleeve 204 and located between the movable plate 205 and the pressure plate 206 until the space between the movable plate 205 and the pressure plate 206 is filled with lubricating oil. Then, the bolt plug 2062 is used to seal the threaded hole 2061. The screw rod 207 is rotated. As the screw rod 207 rotates, the pressure plate 206 and the second sealing rubber ring 2065 move along the inner cavity of the sealing sleeve 204. As the pressure plate 206 moves, the lubricating oil is sprayed onto the bearing body 202 through the oil nozzle 2051. Since several groups of oil nozzles 2051 are arranged at equal angles on one side of the bearing body 202, the lubricating oil is sprayed onto the bearing body 202 relatively evenly. Secondly, since the sealing sleeve 204 and the sealing plate 203 block both sides of the bearing body 202, the lubricating oil is prevented from being thrown out, thereby avoiding the waste of lubricating oil.

[0044] Furthermore, two groups of spiral grooves 2052 are symmetrically provided in the inner circle of the movable plate 205 , and two groups of pins 2063 are symmetrically provided on the end of the pressure plate 206 , and the pins 2063 are slidably connected to the spiral grooves 2052 .

[0045] Specifically, when the pressure plate 206 and the second sealing rubber ring 2065 move along the inner cavity of the sealing sleeve 204, the end of the pressure plate 206 will slide along the inner ring of the movable plate 205. At the same time, the two groups of pins 2063 at the end of the pressure plate 206 slide along the two groups of spiral grooves 2052. Under the guidance of the spiral grooves 2052, the movable plate 205 and the second sealing rubber ring 2065 rotate in the inner cavity of the sealing sleeve 204. At the same time, the movable plate 205 drives several groups of oil nozzles 2051 to rotate, so that the oil nozzles 2051 rotate during the oil injection process, so that the lubricating oil is sprayed on the bearing body 202 more evenly.

[0046] Working principle: when the conveyor belt is driven, the conveyor belt drives the pressure roller 3 to rotate together with the pressure roller 3. Since the limiting rod 5 is connected to the bearing seat 2, the wheel body 401 cannot rotate. At the same time, the conveyor belt will drive several groups of guide columns 403 to rotate. The rotating guide columns 403 guide and limit the conveyor belt transmission. When it is necessary to adjust the distance between the two groups of pressure rollers 3, turn the knob assembly 104, the knob housing 1041 will rotate together with the fixing plate 1046, and the fixing plate 1046 will drive the double-threaded screw 102 to rotate. As the double-threaded screw 102 rotates, the two groups of screw sleeves 103 will move toward or away from each other along the inner cavity of the shaft body 101. At the same time, the screw sleeves 10 3 will drive the belt pressure roller 3 to slide along the shaft 101, so that the two groups of belt pressure rollers 3 move toward or away from each other, thereby adjusting the distance between the two groups of belt pressure rollers 3. In this process, the double-threaded screw 102 rotates the second toothed disc 1044 through the rectangular bar 1021 and the rectangular groove 41. As the second toothed disc 1044 rotates, the teeth on the second toothed disc 1044 squeeze the tooth grooves on the first toothed disc 1043. Since the first toothed disc 1043 is fixed, the thrust of the squeezing acts on the rotation of the second toothed disc 1044, causing the second toothed disc 1044 to retreat along the double-threaded screw 102 and compress the spring 1045 until the second toothed disc 1044 is moved back under the action of the rebound force of the spring 1045. The second toothed disc 1044 meshes with the first toothed disc 1043 again. The mutual meshing force between the second toothed disc 1044 and the first toothed disc 1043 limits the rotation of the double-threaded screw 102. Without turning the knob assembly 104, the double-threaded screw 102 cannot be easily rotated. When it is necessary to lubricate the bearing body 202, screw the bolt plug 2062 to open the threaded hole 2061, and then the oil gun presses the solidified lubricating oil into the sealing sleeve 204 through the threaded hole 2061 and locates it between the movable plate 205 and the pressure plate 206 until the space between the movable plate 205 and the pressure plate 206 is filled with lubricating oil, and then the bolt plug 2062 is tightened. 62 blocks the threaded hole 2061, and rotates the screw 207. As the screw 207 rotates, the pressure plate 206 and the second sealing rubber ring 2065 move along the inner cavity of the sealing sleeve 204. As the pressure plate 206 moves, the lubricating oil will be sprayed onto the bearing body 202 through the oil nozzle 2051. At the same time, the two groups of pins 2063 at the end of the pressure plate 206 slide along the two groups of spiral grooves 2052. Under the guidance of the spiral grooves 2052, the movable plate 205 and the second sealing rubber ring 2065 rotate in the inner cavity of the sealing sleeve 204. At the same time, the movable plate 205 drives several groups of oil nozzles 2051 to rotate, so that the oil nozzles 2051 rotate during the oil injection process.

[0047] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable conveyor belt pulley, comprising a rotating shaft (1), characterized in that: Two sets of bearing seats (2) are symmetrically connected to the two ends of the rotating shaft (1), two sets of belt-pressing rollers (3) are symmetrically and movably installed on the rotating shaft (1), a limiting wheel (4) is provided on one side of the belt-pressing roller (3), and two sets of limiting rods (5) are symmetrically provided on one side of the limiting wheel (4); The limiting wheel (4) comprises: A wheel body (401), the wheel body (401) being rotatably connected to the belt pressing wheel (3); A mounting hole (402) is provided on the wheel body (401); as well as, A plurality of groups of guide posts (403) screwed into the mounting holes (402); The limiting rod (5) is inserted into the bearing seat (2), and one end of the limiting rod (5) is fixedly connected to the wheel body (401); The rotating shaft (1) comprises: A shaft body (101), wherein the two sets of belt-pressing rollers (3) are symmetrically sleeved on the shaft body (101); A double-threaded lead screw (102) screwed into the shaft (101); Two sets of threaded sleeves (103) threadedly connected to the double-threaded lead screw (102); as well as, A knob assembly (104) fixedly mounted in the middle of the double-threaded lead screw (102); The bearing seat (2) comprises: A support frame (201), wherein two groups of guide holes (211) are symmetrically provided on the support frame (201), and the guide holes (211) are slidably connected to the limiting rod (5); A bearing body (202) is embedded and mounted on the support frame (201), wherein the inner ring of the bearing body (202) is fixedly connected to the inner ring of the shaft body (101); a blocking plate (203) fixedly mounted on one side of the bearing body (202); a sealing sleeve (204) fixedly mounted on the other side of the bearing body (202); A movable plate (205) screwed into the sealing sleeve (204); A pressure plate (206) plugged into the movable plate (205); as well as, A screw rod (207) screwed to the pressing plate (206); A threaded hole (2061) is provided on the pressure plate (206), a bolt plug (2062) is screwed to the threaded hole (2061), a second sealing rubber ring (2065) is sleeved on both the pressure plate (206) and the movable plate (205), the pressure plate (206) and the second sealing rubber ring (2065) are slidably connected to the inner cavity of the sealing sleeve (204), and the movable plate (205) and the second sealing rubber ring (2065) are screwed to the inner cavity of the sealing sleeve (204).

2. The adjustable conveyor belt pulley according to claim 1, characterized in that: The screw sleeve (103) is slidably connected to the inner cavity of the shaft body (101), and the screw sleeve (103) is fixedly connected to the inner ring of the belt pressure wheel (3).

3. The adjustable conveyor belt pulley according to claim 2, characterized in that: The knob assembly (104) includes: A knob housing (1041), wherein the knob housing (1041) is sleeved on the middle portion of the double-threaded lead screw (102); Two sets of rotating discs (1042) are symmetrically screwed on both ends of the knob housing (1041), the rotating discs (1042) are fixedly installed in the shaft body (101), and the rotating discs (1042) are screwed on the double-threaded lead screw (102); A first toothed disc (1043) fixedly connected to one end of the rotating disc (1042); a second toothed disc (1044) engaging the first toothed disc (1043); a spring (1045) disposed on the back side of the second toothed disc (1044); as well as, A fixing plate (1046) is provided between the two groups of springs (1045).

4. The adjustable conveyor belt pulley according to claim 3, characterized in that: The fixing plate (1046) is fixedly mounted in the knob housing (1041), and the double-threaded lead screw (102) is fixedly connected in the fixing plate (1046).

5. The adjustable conveyor belt pulley according to claim 4, characterized in that: Two groups of rectangular bars (1021) are symmetrically welded in the middle of the double-threaded lead screw (102), two groups of rectangular grooves (41) are symmetrically arranged in the inner ring of the second toothed disc (1044), the rectangular grooves (41) are slidably connected to the rectangular bars (1021), and the spring (1045) is sleeved on the double-threaded lead screw (102).

6. The adjustable conveyor belt pulley according to claim 1, characterized in that: A plurality of groups of oil spray nozzles (2051) are arranged at equal angles on one side of the movable plate (205), a first sealing rubber ring (2031) is arranged on the inner ring of the blocking plate (203), two groups of rotating grooves (1011) are symmetrically arranged at both ends of the shaft (101), the end of the movable plate (205) is rotated to the rotating groove (1011), and one end of the screw rod (207) is rotated to the bottom of the rotating groove (1011).

7. The adjustable conveyor belt pulley according to claim 6, characterized in that: Two groups of spiral chutes (2052) are symmetrically provided in the inner ring of the movable plate (205), and two groups of pins (2063) are symmetrically provided on the end of the pressure plate (206), and the pins (2063) are slidably connected to the spiral chutes (2052).

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