CN113816073A - Lower centering idler set of duplicate gear and mounting method - Google Patents

Abstract

Provided are a lower centering idler set of a duplex gear and an installation method. Under normal conditions, the aligning carrier roller group is automatic to the conveyer belt and adjusts partially, and the accent partial mechanism of automatic aligning carrier roller can take place wearing and tearing, the deformation after the long-term operation, jam, circumstances such as crooked. The invention comprises the following components: the double-gear centering device comprises an underframe (1), two centering bases, a duplicate gear centering device and two symmetrically arranged carrier roller frames, wherein the two centering bases are fixed on the underframe; the dual-gear aligning device is provided with two adjusting racks, the two adjusting racks are distributed on two sides of the pinions of the two aligning bases and are respectively meshed with the pinions of the two aligning bases, and the tooth directions of the two adjusting racks are opposite and are used for adjusting the two aligning bases to rotate synchronously and in the same direction. The invention relates to a lower centering idler set for a duplicate gear and an installation method.

Description

Lower centering idler set of duplicate gear and mounting method

Technical Field

The invention belongs to the technical field of belt conveyors, and particularly relates to a lower centering idler set of a duplicate gear and an installation method.

Background

A belt conveyor generally consists of a drive unit, a drum, a conveyor belt, a carrier roller, a tensioner, a belt frame, safety accessories, etc. The driving device rotates to drive the roller to rotate, the roller drives the conveying belt to rotate on the belt rack in a circulating mode through friction, and the conveying belt drives materials borne on the surface to run and convey the materials from one place to another place. The belt conveyor is influenced by factors such as manufacturing and installation, and the deviation problem is inevitable. At present, the deviation rectifying method for the deviation of the conveying belt is multiple, and for a belt conveyor, the most common and effective mode is to adopt a self-aligning carrier roller.

Under normal conditions, aligning carrier roller group is automatic to the conveyer belt and carries out the tuningout, and the tuningout mechanism of automatic aligning carrier roller can take place wearing and tearing, deformation, jam, the circumstances such as crooked after long-term the use, and aligning carrier roller group becomes poor even loses the effect of tuningout to the aligning effect variation of belt, and what is more, the tuningout mechanism of aligning carrier roller group damages, causes whole aligning carrier roller group can not work, only can change a whole set of aligning carrier roller group, so aligning mechanism performance and life have decided the life-span of whole aligning carrier roller group.

A connecting rod mechanism is adopted between two rotating shafts, pin shafts at two ends of the connecting rod mechanism are loosely matched with holes, so that poor transmission accuracy and sensitivity are caused, and the connecting rod can also bend, deform and the like, so that the service life of the whole aligning carrier roller group is shortened. 2. The design idea is changed, and the oil filling nozzle is not designed to cause dry grinding damage of the bearing. 3. The dustproof and waterproof design is not carried out, so that the rotating mechanism is stuck and rusted, and the use is influenced.

Disclosure of Invention

The invention aims to solve the existing problems and provides a double-gear lower centering carrier roller group which is meshed by gears and racks and improves the accuracy, reliability and sensitivity of deviation correction and an installation method.

The above purpose is realized by the following technical scheme:

a duplex gear lower centering carrier roller group comprises an underframe, two centering bases, a duplex gear centering device and two symmetrically arranged carrier roller frames, wherein the two centering bases are fixed on the underframe;

the dual-gear aligning device comprises two pinions and two adjusting racks, wherein the two pinions and the two adjusting racks are connected between the vertical rotating shafts of the aligning bases through keys, the two adjusting gears are distributed on two sides of the two pinions and are respectively meshed with the two pinions, and the tooth directions of the two adjusting racks are opposite and are used for adjusting the two aligning bases to rotate synchronously and in the same direction.

And the double-gear lower centering carrier roller group is characterized in that limiting devices for controlling the rotation angle of the centering base are respectively fixed at two ends of the double-rack centering device in the chassis.

The double-gear lower centering idler set comprises limiting plates fixed inside the underframe, each limiting plate is connected with two adjusting bolts in a threaded manner, and the positions of the two adjusting bolts are opposite to the ends of two adjusting racks of the double-rack centering device.

The carrier roller group of centering under duplex gear, the aligning base be bearing aligning base, it includes square bottom plate, rack sealing cover, pivot, bearing frame and two bearings, square bottom plate be fixed in the chassis on, the rack sealing cover with bearing frame welding hookup, the bearing frame with square bottom plate welding hookup, the pivot with the bearing frame between through two the bearing connect, the adjustment rack be located the rack sealing cover in and with rack sealing cover sliding fit.

The double-gear lower centering carrier roller set is characterized in that the adjusting rack comprises two circular racks and an adjusting rod, one end of the adjusting rod is provided with a positive screw hole, the other end of the adjusting rod is provided with a negative screw hole, the two circular racks are located at two ends of the adjusting rod, and the end parts of the two circular racks are in threaded connection with the screw holes of the adjusting rod.

The double-gear lower centering carrier roller group is characterized in that an underframe sealing plate is further fixed at the bottom of the underframe.

A method for mounting a lower centering idler set of a duplicate gear comprises the following steps:

(1) oppositely welding a left inclined plate and a reinforcing plate to form a left roller frame, and welding a bending inclined clamping plate and a conical roller on the left roller frame for later use;

(2) assembling the aligning base;

(3) installing a left circular rack, a locking nut, an adjusting rod, a locking nut, a right circular rack and a right pinion, adjusting the positions to enable the center positions of the toothed parts of the left pinion and the right circular rack to be opposite to the central line of a rotating shaft, finely adjusting the adjusting rod again to enable the left pinion and the left circular rack, the right circular rack and the right pinion to be well meshed after a flat key and an outer snap spring are well arranged, enabling the actions to be light and free of jamming, adding butter to the meshed parts to ensure lubrication, well arranging a sealing cover, and then well arranging an inner snap spring;

(4) welding a limiting seat on the underframe, installing an adjusting bolt, rotating the installed rotating part and the duplicate gear adjusting rod part while adjusting the position of the adjusting bolt, enabling the rotating part to rotate by a maximum angle of 15-30 degrees, and locking an adjusting nut;

(5) welding a guide sleeve on a bracket bottom plate, then penetrating the guide sleeve on a rotating shaft, adjusting the direction of the bracket bottom plate to be parallel to the underframe, and welding the bracket bottom plate and the rotating shaft;

(6) welding the prepared left carrier roller frame component and the bracket bottom plate, adjusting the straight edge direction of a left carrier roller frame reinforcing plate to be parallel to the underframe before welding, adjusting the oblique edge direction of a reinforcing plate to be parallel to the axial direction of the conical roller, welding the right carrier roller frame component and the bracket bottom plate, adjusting the straight edge direction of the carrier roller frame reinforcing plate to be parallel to the underframe before welding, and adjusting the oblique edge direction of a reinforcing plate to be parallel to the axial direction of the conical roller;

(7) conical rollers are arranged on the left roller frame and the right roller frame, and the axes of the conical rollers are parallel to the inclined bracket.

Has the advantages that:

1. the invention adopts a gear and rack meshing mode to carry out deviation adjustment, and the adjusting rod is used for keeping the rack and the gear close to each other all the time, thereby improving the accuracy, reliability and sensitivity of deviation adjustment.

2. The chassis of the invention adopts a full-sealed design, so that the interior of the equipment can be prevented from being polluted by dust and corroded by rainwater even in a humid and high-dust working environment, and lubricating grease can be prevented from flowing onto a conveying belt in a failure state.

3. The aligning carrier roller group under the duplex gear has obvious deviation rectifying effect, accurate and reliable positioning and transmission of the duplex rack and the gear, long service life, small maintenance amount, stable operation, low abrasion to a conveying belt, good implementation effect and high application value.

4. The correcting device can automatically adjust the circular rack to remove the clearance if the correcting device is worn after being used for a period of time, the circular rack has adjustability and is used for a longer time, and the aligning idler set adopts a connecting rod type, so that the adjustability is not available after the friction, and the whole set of equipment needs to be replaced if the aligning idler set is damaged.

Description of the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a bottom view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a schematic view of the clamp plate and idler shaft ends;

in the figure: 1. a chassis; 2. a left carrier roller frame; 3. a left aligning base; 4. a left fuel filler neck; 5. a right aligning base; 6. a right refueling nozzle; 7. a right idler frame; 8. bending the oblique clamping plate; 9. a left sloping plate; 10. a reinforced panel; 11. a middle clamping plate; 12. a conical roller; 13. a hanger; 14. a reinforcing plate; 15. an underframe sealing plate; 18. a limiting plate; 19. adjusting the bolt; 21. A left circular rack; 22. a flat bond; 23. a left pinion gear; 24. locking the nut; 25. an adjusting lever; 26. locking the nut; 27. a right circular rack; 28. 31, a rotating shaft; 32. a bracket bottom plate; 33. a guide sleeve; 34. a bearing seat; 35. a square bottom plate; 36. a rack seal cover; 37. an inner snap spring; 38. sealing the cover; 39. the sealing cover is welded with the handle; 40. an upper bearing; 41. a lower bearing; 42. a backstop retainer ring; 43. a round nut is arranged; 44. a lower round nut; 45. an outer snap spring; 51. and (4) bolts.

The specific implementation mode is as follows:

example 1:

a duplex gear lower centering carrier roller group comprises an underframe 1, two centering bases, a duplex gear centering device and two symmetrically arranged carrier roller frames, wherein the two centering bases are fixed on the underframe;

the dual-gear aligning device is provided with two adjusting racks, two adjusting gears are distributed on two sides of the pinion of the aligning base and are respectively meshed with the two pinions of the aligning base, the tooth directions of the adjusting racks are opposite, the adjusting racks are used for adjusting two aligning bases to rotate synchronously and in the same direction, and after the dual-gear aligning device is used for a long time, the adjusting racks are used for adjusting the meshing tightness between the gears and the racks, so that the accuracy, the reliability and the sensitivity of the aligning action are ensured.

Example 2:

according to the double-gear lower centering idler set in the embodiment 1, limiting devices for controlling the rotation angle of the centering base are respectively fixed at two ends of the double-rack centering device in the underframe.

Example 3:

according to the idler set under the duplicate gear of embodiment 1 or 2, stop device including be fixed in the inside limiting plate 18 of chassis, every limiting plate on all threaded connection have two adjusting bolt 19, two adjusting bolt's position with the tip of two adjusting racks of duplicate rack aligning ware just right.

Example 4:

according to embodiment 1 or 2 or 3 under the duplicate gear centering bearing roller group, the centering base be bearing centering base, it includes square bottom plate 35, rack sealed cowling 36, pivot 31, bearing frame and two bearings 34, square bottom plate be fixed in the chassis on, rack sealed cowling with bearing frame welded coupling, bearing frame with square bottom plate welded coupling, the pivot with the bearing frame between connect through two the bearings, the adjustment rack be located the rack sealed cowling in and with rack sealed cowling sliding fit.

Example 5:

according to the lower centering idler set of the duplex gear in the embodiment 1, 2, 3 or 4, the adjusting rack comprises two circular racks and an adjusting rod 25, one end of the adjusting rod is provided with a positive thread screw hole, the other end of the adjusting rod is provided with a negative thread screw hole, the two circular racks are located at two ends of the adjusting rod, and the end parts of the two circular racks are in threaded connection with the screw holes of the adjusting rod.

Example 6:

the idler roller group under the duplicate gear according to embodiment 1 or 2 or 3 or 4 or 5, wherein the bottom of the underframe is also fixed with an underframe sealing plate 15.

Example 7:

a method for mounting a lower centering idler set of a duplicate gear comprises the following steps:

(1) oppositely welding a left inclined plate and a reinforcing plate to form a left roller frame, and welding a bending inclined clamping plate and a conical roller on the left roller frame for later use;

(2) assembling the aligning base;

(3) installing a left circular rack, a locking nut, an adjusting rod, a locking nut, a right circular rack and a right pinion, adjusting the positions to enable the center positions of the toothed parts of the left pinion and the right circular rack to be opposite to the central line of a rotating shaft, finely adjusting the adjusting rod again to enable the left pinion and the left circular rack, the right circular rack and the right pinion to be well meshed after a flat key and an outer snap spring are well arranged, enabling the actions to be light and free of jamming, adding butter to the meshed parts to ensure lubrication, well arranging a sealing cover, and then well arranging an inner snap spring;

(4) welding a limiting seat on the underframe, installing an adjusting bolt, rotating the installed rotating part and the duplicate gear adjusting rod part while adjusting the position of the adjusting bolt, enabling the rotating part to rotate by a maximum angle of 15-30 degrees, and locking an adjusting nut;

(5) welding a guide sleeve on a bracket bottom plate, then penetrating the guide sleeve on a rotating shaft, adjusting the direction of the bracket bottom plate to be parallel to the underframe, and welding the bracket bottom plate and the rotating shaft;

(6) welding the prepared left carrier roller frame part and the bracket bottom plate, adjusting the direction of the left carrier roller frame to be parallel to the underframe before welding, welding the right carrier roller frame part and the bracket bottom plate, and adjusting the direction of the right carrier roller frame to be parallel to the underframe before welding;

(7) conical rollers are arranged on the left roller frame and the right roller frame, the axes of the conical rollers are parallel to the axes of the inclined bracket, and the axes of the horizontal rollers are parallel to the axes of the horizontal rollers.

If the deviation correcting device is worn after being used for a period of time, the circular rack can be automatically adjusted to remove gaps, and the circular rack can slide due to the adjustability of the circular rack, so that teeth on the circular rack are abutted to teeth meshed with the pinion, and the adjusting function is achieved.

The two ends of the underframe are provided with oblong holes which can be connected with the frame of the belt conveyor by bolts;

the roller frame is arranged above the underframe and comprises a left roller frame 2 and a right roller frame 7;

the left roller frame 2 comprises a bending inclined clamping plate 8, a left inclined plate 9, 2 reinforcing plates 10 and a middle clamping plate 11;

the left inclined plate 10 and the right inclined plate 10 are welded at two ends with bent inclined clamping plates 8 and middle clamping plates 11, the thicknesses of the two clamping plates are 6-12 mm, and the clamping plates are milled with clamping grooves, the distance between the left middle clamping plate and the right middle clamping plate is 20-30 mm, so that the left carrier roller frame 2 and the right carrier roller frame 7 are ensured not to interfere with each other when rotating, and the clamping plates 8 are provided with guide oblique angles, so that carrier rollers can be conveniently replaced;

the right roller frame 7 is the same as the left roller frame 2 in structure and is symmetrically arranged with the left roller frame.

The bearing roller group includes 2 awl rollers 12, and awl roller pivot both ends have all milled the draw-in groove to both ends card is gone into in above-mentioned cardboard draw-in groove, the awl roller axis is parallel with left swash plate 9.

Left bearing roller frame 2 is fixed on chassis 1 through left aligning base 3:

the left self-aligning base 3 comprises a rotating shaft 31, a bracket bottom plate 32, a guide sleeve 33, a bearing seat 34, a square bottom plate 35, a rack sealing cover 36, an inner clamp spring 37, a sealing cover 8, a sealing cover welding handle 39, an upper bearing 40, a lower bearing 41, a backstop retainer ring 42, an upper round nut 43, a lower round nut 44 and an outer clamp spring 45;

the left roller frame 2 is welded on the bracket bottom plate 32;

the rotating shaft 31 and the guide sleeve 33 are welded on the bracket bottom plate 32, namely the left roller frame 2, the rotating shaft 31, the bracket bottom plate 32 and the guide sleeve 33 are welded into a whole, and when the left roller frame 2 and the conical roller 12 fixed on the left roller frame rotate, the rotating shaft 31 rotates at the same angle.

The bearing seat 34 is provided with a rotating shaft 31, an upper bearing 40 and a lower bearing 41, the upper bearing 40 and the lower bearing 41 adopt thrust bearings, and the rotating shaft 31 is provided with a backstop retainer ring 42, an upper round nut 43 and a lower round nut 44 to lock the bearings on the rotating shaft 31;

the rotating shaft 31 is connected with a left pinion 23 through a flat key 22 and is positioned by an outer snap spring 45;

the rack sealing cover 36 seals the rack part of the left circular rack and the tail end of the rotating shaft 31 of the left pinion 23, and the like, a sealing cover 38 and an inner snap spring 37 are designed at the bottom of the rack sealing cover 36, a sealing cover handle 39 is welded on the sealing cover 38, and the sealing cover handle 39 is used for facilitating disassembly and assembly;

the rack sealing cover 36 is welded and connected with the bearing seat 34, the bearing seat 34 is welded and connected with the square bottom plate 35, the square bottom plate 35 is in threaded connection with the underframe 1 through a bolt 54, a nut 55, a flat gasket 56 and an elastic gasket 57, and an oil filling nozzle 4 is arranged on the square bottom plate 35 and can be filled with lubricating grease through the oil filling nozzle;

the right aligning base 5 has the same structure as the left aligning base 3 and is symmetrically arranged with the left aligning base 3;

the duplex gear transmission mechanism comprises 2 left circular racks 21, 1 left pinion 23, 2 locking nuts 24, 2 adjusting rods 25, 2 locking nuts 26, 2 right circular racks 27 and 1 right pinion 28;

the left round rack 21 is made of No. 45 steel round strips, the left end is not machined, the middle part is machined into a 2-modulus rack, the other end is machined into a positive thread, and the hardness of the rack after heat treatment is equal to that of the left pinion 23;

the left pinion 23 is machined into a gear with the modulus of 2 and the tooth number of 36 by adopting No. 45 steel, and the hardness of the gear after heat treatment is HRG 58-62;

the utility model discloses a round bar adjustment, adjusting rod 25, adjusting rod 25 one end is processed into the positive silk screw, and the other end is processed into the contrary silk screw, and adjusting rod middle part processing has two intervals to be greater than 10mm, becomes the adjusting hole that 90 degrees were arranged, and the size in hole should be greater than 1/3 of adjusting rod diameter and be less than 1/2 of adjusting rod diameter, and many insert the use of round bar adjustment, and adjusting rod middle part mills has two intervals to be greater than 50mm and become the plane that 90 degrees were arranged, supplies to use the wrench adjustment usefulness.

The right round rack 27 is made of No. 45 steel round strip, the right end of the right round rack is not machined, the middle part of the right round rack is machined into a 2-modulus rack, the other end of the right round rack is machined into reverse-thread threads, and the hardness of the rack after heat treatment is equal to that of the right pinion (28).

The right pinion 28 is machined into a module 2 gear with the number of teeth of 36 by adopting No. 45 steel, and the hardness of the gear after heat treatment is HRG 58-62.

The left circular rack 21 enters the left rack seal cover 36 and is engaged with the left pinion 23 in the seal cover.

The right circular rack 27 enters the right rack seal housing and engages the right pinion 28 within the seal housing.

The left circular rack 21 and the right circular rack 27 are connected through an adjusting rod 25, the tightness can be adjusted through the adjusting rod 25 before installation, and the locking nut 24 and the locking nut 26 are used for locking;

the number of the adjusting bolts 19 and the number of the adjusting nuts 20 are respectively 2, the adjusting bolts and the adjusting nuts are installed on the limiting seat 18, the limiting seat is directly welded on the bottom frame, and the adjusting bolts and the adjusting nuts 20 of the adjusting bolts and the adjusting nuts 19 can limit the rotating angles of the left roller frame 2 and the right roller frame 7;

the underframe sealing plate 15 is fixed on the underframe 1 through a bolt 51 and plays a role in dust prevention and water prevention;

the hanger 13 is provided with a reinforcing plate 14 and 4 oblong holes, and is connected with the frame of the belt conveyor by bolts, nuts, flat pads and elastic pads, and the hanger 13 is connected with the underframe 1 by welding.

Claims (7)

1. The utility model provides a centering bearing roller group under duplicate gear, characterized by: the dual-gear automatic centering device comprises an underframe, two centering bases, a duplicate gear centering device and two symmetrically arranged carrier roller frames, wherein the two centering bases are fixed on the underframe;

the dual-gear aligning device comprises two pinions and two adjusting racks, wherein the two pinions and the two adjusting racks are connected between the vertical rotating shafts of the aligning bases through keys, the two adjusting gears are distributed on two sides of the two pinions and are respectively meshed with the two pinions, and the tooth directions of the two adjusting racks are opposite and are used for adjusting the two aligning bases to rotate synchronously and in the same direction.

2. The set of dual gear down-center idler rollers of claim 1, wherein: and limiting devices for controlling the rotation angle of the aligning base are respectively fixed at two ends of the duplex rack aligning device in the underframe.

3. The set of dual gear down-center idler rollers of claim 2, wherein: the limiting device comprises limiting plates fixed inside the underframe, each limiting plate is connected with two adjusting bolts in a threaded mode, and the positions of the two adjusting bolts are opposite to the end portions of the two adjusting racks of the duplex rack centering device.

4. The set of dual gear down-center idler rollers of claim 1, wherein: the aligning base be bearing aligning base, it includes square bottom plate, rack sealing boot, pivot, bearing frame and two bearings, square bottom plate be fixed in the chassis on, the rack sealing boot with bearing frame welded connection, the bearing frame with square bottom plate welded connection, the pivot with the bearing frame between through two the bearing connect, the adjustment rack be located the rack sealing boot in and with rack sealing boot sliding fit.

5. The set of dual gear down-center idler rollers of claim 1, wherein: the adjusting rack comprises two circular racks and an adjusting rod, one end of the adjusting rod is provided with a positive screw hole, the other end of the adjusting rod is provided with a negative screw hole, the two circular racks are positioned at two ends of the adjusting rod, and the end parts of the circular racks are in threaded connection with the screw holes of the adjusting rod.

6. The set of double-pinion lower centering idler rollers according to claim 1 or 4, wherein: and a bottom frame sealing plate is fixed at the bottom of the bottom frame.

7. A method of mounting a set of idler rollers under a duplicate gear according to any of claims 1 to 6, wherein: the method comprises the following steps:

(1) oppositely welding a left inclined plate and a reinforcing plate to form a left roller frame, and welding a bending inclined clamping plate and a conical roller on the left roller frame for later use;

(2) assembling the aligning base;

(3) installing a left circular rack, a locking nut, an adjusting rod, a locking nut, a right circular rack and a right pinion, adjusting the positions to enable the center positions of the toothed parts of the left pinion and the right circular rack to be opposite to the central line of a rotating shaft, finely adjusting the adjusting rod again to enable the left pinion and the left circular rack, the right circular rack and the right pinion to be well meshed after a flat key and an outer snap spring are well arranged, enabling the actions to be light and free of jamming, adding butter to the meshed parts to ensure lubrication, well arranging a sealing cover, and then well arranging an inner snap spring;

(4) welding a limiting seat on the underframe, installing an adjusting bolt, rotating the installed rotating part and the duplicate gear adjusting rod part while adjusting the position of the adjusting bolt, enabling the rotating part to rotate by a maximum angle of 15-30 degrees, and locking an adjusting nut;

(5) welding a guide sleeve on a bracket bottom plate, then penetrating the guide sleeve on a rotating shaft, adjusting the direction of the bracket bottom plate to be parallel to the underframe, and welding the bracket bottom plate and the rotating shaft;

(6) welding the prepared left carrier roller frame component and the bracket bottom plate, adjusting the straight edge direction of a left carrier roller frame reinforcing plate to be parallel to the underframe before welding, adjusting the oblique edge direction of a reinforcing plate to be parallel to the axial direction of the conical roller, welding the right carrier roller frame component and the bracket bottom plate, adjusting the straight edge direction of the carrier roller frame reinforcing plate to be parallel to the underframe before welding, and adjusting the oblique edge direction of a reinforcing plate to be parallel to the axial direction of the conical roller;

(7) conical rollers are arranged on the left roller frame and the right roller frame, and the axes of the conical rollers are parallel to the inclined bracket.

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