Deceleration transmission mechanism for roller replacement

Abstract

The utility model provides a reduction transmission mechanism for roller replacement, which comprises a first rack and a second rack which are respectively used for being linked with a sliding seat and a roller seat, the first rack and the second rack are connected with a reduction part, and the reduction part comprises a rotating shaft, and a first gear and a second gear which are respectively connected to two ends of the rotating shaft. The outer diameter of the first gear is larger than that of the second gear, and the first gear and the second gear are engaged with the first rack and the second rack correspondingly. The speed reduction transmission mechanism is simple and efficient when used for replacing the roller, the roller seat and the sliding seat can be linked through a gear and rack structure, meanwhile, speed difference is generated, the end of a working brush roller is separated at a time, shaft head deformation is avoided when the brush roller is separated from a roller clamping mechanism, and the roller replacing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of metal rust removal, in particular to a speed reduction transmission mechanism for roller replacement. Background Art

[0002] Steel plates are also called strips. After production, the strips will be rolled up and stored, which is the common steel coil. The steel coil will enter the corresponding product manufacturing plant according to different usage requirements and be made into corresponding parts. During the period from when the strip enters the processing plant to when the strip is cut and processed, the strip will react with moisture and chemicals in the air, causing the surface material of the strip to peel off or rust. In the existing technology, the surface of the strip is usually physically polished by a brush roller installed in the steel plate grinding and brushing equipment. However, this equipment needs to contact the brush roller with the surface of the steel plate during grinding. After long-term use, the grinding effect of the brush roller will decrease. Therefore, the brush roller needs to be placed on the roller changing vehicle and replaced with a new roller.

[0003] For example, in the patent of the roller changing vehicle with announcement number CN110842728, bearing seat 1 and bearing seat 2 are installed at the lower end of the working main beam, and the working brush roller is installed between the two bearing seats. Bearing seat 1 can slide and make the brush roller installed in place or disengaged; the working main beam and the two bearing seats can be regarded as a roller clamping mechanism, and bearing seat 1 and bearing seat 2 can be regarded as a sliding seat and a fixed seat respectively; when changing the roller, the roller changing supporting device extends into the steel plate surface rust remover along the roller changing track, and then the lifting motor drives the lifting mechanism to operate, so that the working main beam descends, and the scale breaking roller falls on the roller seat of the roller changing supporting device. At this time, the sliding seat moves outward along the shaft seat slide rail, so that one end of the scale breaking roller is separated from bearing seat 1, and then the upper beam is driven to slide, so that the other end of the scale breaking roller is also separated from the fixed seat, thereby replacing the old working brush roller from the roller clamping mechanism.

[0004] Although the above-mentioned roller changing method can replace the brush roller, when changing the roller, the sliding seat needs to disengage one end of the brush roller first, and then the fixed seat moves to disengage the other end of the brush roller; but when the brush roller is placed on the roller seat, it is difficult to place it in an absolutely horizontal position due to errors. Therefore, when the sliding seat is disengaged first, the brush roller will tilt downward at a certain angle. At this time, if the fixed seat is moved to disengage from the brush roller shaft end, the brush roller shaft head at the other end of the fixed seat will be stuck, and the shaft head will be easily deformed, which will damage the roller changing equipment and the brush roller and affect the subsequent roller changing efficiency.

[0005] In order to make the sliding seat and the fixed seat disengage the brush roller at one time and improve the reliability and efficiency of roller changing, the current scheme is to make the roller seat and the brush roller on the roller seat slide in the same direction as the sliding seat while the sliding seat slides to disengage the end of the brush roller. At this time, the other end of the brush roller will also be disengaged from the fixed seat; but if the sliding seat directly links the roller seat when sliding, the fixed seat can indeed be disengaged from the end of the brush roller, but the sliding speed of the roller seat and the sliding seat is the same, which causes the sliding seat to still cooperate with the end of the brush roller when sliding. Therefore, when the fixed seat is disengaged from the end of the brush roller, the brush roller shaft head in the sliding seat will also be stuck, which will also cause the problem of shaft head deformation and low roller changing efficiency. Summary of the invention

[0006] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a reduction transmission mechanism for roller replacement, which is simple and efficient for roller replacement, and can generate a speed difference while linking the roller seat and the sliding seat through a gear rack structure, and disengage the end of the working brush roller at one time, thereby avoiding deformation of the brush roller shaft head when the brush roller is disengaged from the clamping roller mechanism, thereby improving the roller replacement efficiency.

[0007] The technical solution of the utility model is achieved in this way:

[0008] A reduction transmission mechanism for roller changing, comprising:

[0009] The first rack is used to move in the same direction as the sliding seat;

[0010] A second rack, used for connecting with the roller seat;

[0011] The reduction assembly includes a rotating support seat and a reduction member, the reduction member includes a rotating shaft that rotates along its own axis, the rotating shaft is connected to the rotating support seat and rotates along its own axis direction, both ends of the rotating shaft pass through the rotating support seat and are respectively connected to a first gear and a second gear, the outer diameter of the first gear is larger than the outer diameter of the second gear, and the first gear and the second gear are respectively meshed with a first rack and a second rack.

[0012] Preferably, the ratio of the outer diameter of the second gear to that of the first gear is in the range of 1:4-1:2.

[0013] Preferably, the rotating support seat includes a support and a rotating connecting seat connected to the support, and the rotating shaft is rotatably connected to the rotating connecting seat along its own axial direction; the support can provide stable support for the rotating connecting seat and the rotating shaft connected to the rotating connecting seat.

[0014] Preferably, a center hole connecting the two sides of the rotating connecting seat is provided on the rotating connecting seat, and the rotating shaft is rotatably connected in the center hole along its own axis, and the outer diameters of the first gear and the second gear are both larger than the outer diameter of the rotating shaft; at least one of the first gear and the second gear is detachably connected to the rotating shaft, so that at least one end of the rotating shaft can pass through the center hole and be installed on the rotating connecting seat; it is convenient to install the reduction component and adjust the speed ratio of the first gear and the second gear.

[0015] Preferably, the first gear and the rotating shaft are detachably connected, and the second gear and the rotating shaft are integrally formed; this facilitates the installation of the speed reducer and reduces maintenance costs.

[0016] Preferably, the rotating connecting seat is a cylindrical structure with openings at both ends, and matching holes are symmetrically opened at both ends inside the rotating connecting seat, and the diameter of the matching holes is larger than the diameter of the center hole; an axially fixed bearing is installed in the matching hole, and the rotating shaft is passed through the bearing; the bearing can make the rotating shaft rotate more smoothly.

[0017] Preferably, the bearing includes a bearing inner ring and a bearing outer ring; end covers that seal the opening of the rotating connecting seat are connected to both ends of the rotating connecting seat; the inner side of the bearing outer ring is tightly against the bottom of the matching hole, and the outer side of the bearing outer ring is supported by the end cover, thereby limiting the axial movement of the bearing.

[0018] Preferably, an axial positioning assembly is also installed on the end of the rotating shaft connected to the first gear, the axial positioning assembly includes a pressure plate and a spacer connected to the outer wall of the rotating shaft, the spacer presses against the inner end face of the first gear, and the pressure plate is connected to the corresponding end of the rotating shaft by screws and presses against the outer end face of the first gear to keep the first gear axially fixed.

[0019] Preferably, the rotating shaft includes a main body and a connecting section connected to one end of the main body, the outer diameter of the connecting section is larger than the outer diameter of the main body; the second gear is integrally formed at the outer end of the connecting section; the inner end face of the connecting section abuts against the inner ring of the bearing close to the second gear side, and the opposite end of the spacer sleeve abutting against the first gear passes through the end cover and abuts against the inner ring of the bearing close to the first gear side to limit the axial movement of the rotating shaft.

[0020] The beneficial effects of the utility model using the above technical solution are:

[0021] The utility model provides a reduction transmission mechanism for roller replacement, which, compared with the prior art:

[0022] After the first rack in the reduction transmission mechanism of the utility model is linked with the sliding seat, the first gear will drive the rotating shaft to rotate, and the second gear will rotate at the same time, thereby reducing the sliding speed of the second rack and making the second rack slide with the roller seat. Through the simple mechanism of the gear rack, a speed difference is generated between the roller seat and the sliding seat, leaving a buffer space for the roller seat and the brush roller on the roller seat to move, so that when the two ends of the brush roller can be separated from the sliding seat and the fixed seat, there will be no deformation of the shaft head, thereby improving the efficiency of roller replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the roller clamping mechanism placing the working brush roller onto the roller seat;

[0024] Figure 2 It is a schematic diagram of the two ends of the working brush roller being disengaged from the sliding seat and the fixed seat;

[0025] Figure 3 This is a schematic diagram of the roller clamping mechanism rising after the roller unloading is completed;

[0026] Figure 4 It is a schematic diagram of placing a new brush roller on the roller changing mechanism;

[0027] Figure 5 It is a schematic diagram of the roller changing mechanism carrying a new brush roller into the brush grinding equipment;

[0028] Figure 6 It is a schematic diagram of the new brush roller being installed in place on the clamping roller mechanism after the sliding seat continues to slide;

[0029] Figure 7 This is a schematic diagram of the clamping roller mechanism being reset upward after the new brush roller is installed in place;

[0030] Figure 8 This is an enlarged structural diagram of the roller changing mechanism;

[0031] Fig. 9 This is an enlarged partial cross-sectional view of the support bracket and a schematic diagram of the structure of the cylinder;

[0032] Figure 10a-10c The schematic diagram of the steps of unloading the roller by linkage between the sliding seat and the roller seat;

[0033] Fig.11 It is a partial cross-sectional view of the reduction transmission mechanism;

[0034] Fig.12 It is a structural cross-sectional view of the mounting hole;

[0035] The figures are marked as follows: 1-clamping roller mechanism, 2-roller changing mechanism, 3-power mechanism, 4-working brush roller, 4a-new brush roller, 11-fixed seat, 12-first limit plate, 13-sliding seat, 14-first vertical plate, 15-track, 21-supporting seat, 21a-roller seat, 22-second limit plate, 23-base, 24-second vertical plate, 25-reduction transmission module, 26-cylinder, 27-second guide rail, 28-first guide rail, 29-base, 31-motor, 32-roller shaft, 33-roller, 34-chain, 211-supporting surface, 212-cap body, 213-buffer column, 214-disc spring, 215-step surface, 216-first nut, 216a-second nut, 217-open Pin, 218-mounting hole, 218a-large diameter section, 218b-small diameter section, 251-first rack, 252-rotating shaft, 253-first gear, 254-second gear, 255-second rack, 256-rotating support seat, 256a-rotating connecting seat, 256b-support, 257-first plate, 258-second plate, 259-connecting plate, 261-piston rod, 262-cylinder body, 263-hinge seat, 264-pin shaft, 2521-body, 2522-connecting section, 2561-bearing, 2562-end cover, 2561a-bearing outer ring, 2561b-bearing inner ring, 2563-spacer, 2564-pressure plate, a-center hole, b-matching hole. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the description of the present invention, the term "at least one" refers to one or more than one, unless otherwise clearly defined. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0039] The specific implementation of the utility model is as follows:

[0040] like Figure 1-12 As shown, the utility model provides a reduction transmission mechanism for roller changing, the reduction transmission mechanism is used as a reduction transmission module 25 on the roller changing device, and the roller changing device includes:

[0041] The clamping roller mechanism 1 is located in the steel plate grinding and brushing device and can move in the vertical direction. The clamping roller mechanism 1 includes a fixed seat 11 and a sliding seat 13 for clamping the two ends of the working brush roller 4. The sliding seat 13 can slide along the length direction of the working brush roller 4 to enable the working brush roller 4 to be installed in place or disengaged on the clamping roller mechanism 1.

[0042] Roller changing mechanism 2; located below the roller clamping mechanism 1; the roller changing mechanism 2 comprises a base 23, a roller seat 21a for supporting the working brush roller 4 when the working brush roller 4 falls, the roller seat 21a is slidably connected to the upper end of the base 23 along its own length direction, and the length direction of the roller seat 21a is the same as the length direction of the working brush roller 4; a reduction transmission mechanism is connected between the sliding seat 13 and the roller seat 2 to make the sliding speed of the roller seat 21a smaller than the sliding speed of the sliding seat 13;

[0043] When replacing the working brush roller 4, the sliding seat 13 can slide in a direction away from the working brush roller 4 at a first speed, and link the roller seat 21a to slide in the same direction at a second speed less than the first speed through the reduction transmission mechanism, so that the sliding seat 13 and the fixed seat 11 are disengaged from the two ends of the working brush roller 4 together.

[0044] Furthermore, the reduction transmission mechanism is arranged on the base 23, and the reduction transmission mechanism is located at one end of the roller seat 21a. The reduction transmission mechanism includes an input unit and an output unit arranged at intervals along the width direction of the roller seat 21a, and a reduction member is connected between the input unit and the output unit. The input unit and the output unit are respectively connected to the sliding seat 13 and the roller seat 2; the design of the interval arrangement makes the spatial layout on the base 23 more reasonable, and makes the structure of the entire roller changing mechanism 2 more compact.

[0045] Furthermore, the roller clamping mechanism 1 is located in the steel plate brush grinding equipment, including a sliding seat 13 and a fixed seat 11 clamped at both ends of the working brush roller 4. The specific structure and principle of the roller clamping mechanism 1 can be referred to the roller changing mechanism patent with announcement number CN110842728, which will not be repeated here.

[0046] Further, the two ends of the working brush roller 4 are connected to the fixed seat 11 and the sliding seat 13 through a toothed structure. Taking the sliding seat 13 as an example, an internal gear is provided on the sliding seat 13, and an external gear is provided at the end of the working brush roller 4. The internal gear has long teeth and short teeth. The specific structure can refer to the gear meshing structure patent with announcement number CN211103283, which will not be repeated here. Specifically, when the sliding seat 13 slides at a first speed, the roller seat 21a will slide in the same direction as the sliding seat 13 at a second speed less than the first speed. Therefore, when the sliding seat 13 slides and gradually disengages from one end of the working brush roller 4, The roller seat 21a also slides with the working brush roller 4 and gradually disengages from the fixed seat 13, and the disengagement process is carried out simultaneously; since the sliding speed of the sliding seat 13 is fast and the sliding speed of the roller seat 21a is slow, the outer gear on the sliding seat 13 first disengages from the inner gear at one end of the working brush roller 4. At this time, most of the outer gear at the other end of the working brush roller 4 has been disengaged from the inner gear on the fixed seat 13, so the roller shaft of the working brush roller 4 will not be deformed. At this time, you only need to continue to control the movement of the sliding seat 13, and the roller seat 21a and the working brush roller 4 on the roller seat 21a will disengage from the fixed seat 13, thereby realizing the roller unloading.

[0047] Furthermore, a track 15 is pre-installed in the steel plate brushing equipment, rollers 33 are arranged on both sides of the base 23, a roller shaft 32 is connected between the two rollers 33, the roller shaft 32 is driven by a power mechanism 3, the power mechanism 3 includes a motor 31, the motor is connected to a transmission device, the transmission device and the roller shaft 32 are driven by a chain 34, the power mechanism 3 can drive the roller 33 to rotate on the track 15, so that the base 23 moves forward or backward along its own length direction. Its specific structure can refer to the roller changing mechanism patent CN110842728, which will not be repeated here.

[0048] Furthermore, the sliding seat 13 has a first linkage member, and the input unit is connected to a second linkage member; when the working brush roller 4 is replaced, the first linkage member and the second linkage member form a linkage cooperation, so that the roller seat 21a and the sliding seat 11 slide in the same direction.

[0049] Furthermore, the linkage between the first linkage member and the second linkage member on the sliding seat 13 is a detachable linkage, the first linkage member is the first vertical plate 14, and the second linkage member is the second vertical plate 24. When the clamping roller mechanism 1 moves down along the initial working position, the first vertical plate 14 is located on the side of the second vertical plate 24 facing the roller seat 21a, so that the first vertical plate 14 and the second vertical plate 24 are staggered and form a hooking effect on the second vertical plate 24, so that the sliding seat 13 can slide with the second linkage member in the direction away from the working brush roller 4; when the clamping roller mechanism 1 moves up, the first vertical plate 14 and the second vertical plate 24 are separated to release the linkage; the staggered first vertical plate 14 and the second vertical plate 24 have a simple structure. When unloading the rollers, the two can quickly form a mutual hooking effect and perform linkage. After unloading the rollers, the two can also be quickly separated.

[0050] Further, if Figure 4-7 As shown, after unloading the roller, the new brush roller 4a needs to be installed on the clamping roller mechanism 1, and the process is as follows: control the clamping roller mechanism 1 to move up and release the cooperation between the first linkage member and the second linkage member, and then make the roller changing mechanism 2 move out of the steel plate grinding and brushing equipment in the reverse direction; then send the roller changing mechanism 2 equipped with the new brush roller 4a into the steel plate grinding and brushing equipment, so that the roller seat 21a and the clamping roller mechanism 1 are aligned up and down; then control the clamping roller mechanism 1 to move down and make the sliding seat 13 and the fixed seat 11 align with the two ends of the new brush roller 4a respectively, and then control the sliding seat 13 to slide continuously in the direction close to the end of the new brush roller 4a until the two ends of the brush roller are installed in place on the clamping roller mechanism 1;

[0051] Finally, the clamping roller mechanism 1 is controlled to clamp the new brush roller 4a to move up and return to the initial working position; after the working brush roller 4 is removed, the new brush roller 4a can be quickly installed on the clamping roller mechanism 1 to brush the steel plate, thereby ensuring the efficiency of the steel plate brushing.

[0052] Further, if Figure 1-7 As shown, the base 23 cannot move when the roller is unloaded or replaced with a new roller, otherwise it will cause the roller seat 21a to shift in the roller connection position. The fixed seat 11 has a first locking piece, and the base 23 has a second locking piece for cooperating with the first locking piece; when the roller clamping mechanism 1 moves down along the initial working position, the first locking piece cooperates with the second locking piece to lock, so that the base 23 stays in a predetermined position to limit the base 23 from moving back out of the working brush roller 4 brushing device; when the roller clamping mechanism 1 moves up, the first locking piece and the second locking piece are unlocked, so that the base 23 can move back out of the working brush roller 4 brushing device; the first locking piece and the second locking piece cooperate to lock, so that the base 23 can move back out of the working brush roller 4 brushing device; the first locking piece and the second locking piece cooperate to lock, so that the base 23 can remain stable when the roller is unloaded, and will not affect the accuracy of the roller connection of the roller seat 21a; the first locking piece and the second locking piece after the cooperation is released are equivalent to releasing the restriction on the reverse movement of the base 23, so that the entire roller changing mechanism 2 can move out of the steel plate brushing device.

[0053] Furthermore, there are many ways for the first locking member and the second locking member to cooperate to lock or separate, but their structure should meet the requirements of being simple and practical, low cost, and easy to cooperate or separate at any time. The first locking member is the first limit plate 12, and the second locking member is the second limit plate 22. When the clamping roller mechanism 1 moves down along the initial working position, the first limit plate 12 is located on the side of the second limit plate 22 facing the roller seat 21a, so that the first limit plate 12 and the second limit plate 22 are staggered and form a hooking effect on the second limit plate 22, limiting the base 23 from sliding out of the working brush roller 4 brushing device in the opposite direction; when the clamping roller mechanism 1 moves up, the first limit plate 12 and the second limit plate 22 are separated, so that the base 23 can be driven out of the working brush roller 4 brushing device in the opposite direction; the staggered first limit plate 12 and the second limit plate 22 have a simple structure. When unloading the roller, the two can quickly form a mutual hooking effect to limit the sliding of the base 23. After unloading the roller, the two can also be quickly separated.

[0054] Further, if Figure 8-11 As shown, the input unit includes a first rack 251 connected to the second linkage member and slidable on the base 23, and the first rack 251 is used to be linked with the sliding seat 13; the output unit includes a second rack 255 connected to the roller seat 21a and slidable on the base 23, and the second rack 255 is used to be linked with the roller seat 21a; a speed reducer is connected between the first rack 251 and the second rack 255; the speed reducer includes a rotating shaft 252 that can rotate along its own axis direction, a first gear 253 and a second gear 254 connected at both ends of the rotating shaft 252, the outer diameter of the first gear 253 is larger than the outer diameter of the second gear 254, and the first gear 253 and the second gear 254 are respectively meshed with the first rack 251 and the second rack 255; the rotating shaft 252 is connected to a rotating support seat 25 6; when the sliding seat 13 slides in the direction away from the working brush roller 4, the first rack 251 slides at a first speed and drives the rotating shaft 252 to rotate, so that the second rack 255 slides in the same direction as the first rack 251 at a second speed less than the first speed; by connecting the two first gears 253 and the second gear 254 to the two ends of the rotating shaft 252, and making the first gear 253 and the second gear 254 mesh with the first rack 251 and the second rack 255 respectively, so that the first rack 251 and the second rack 255 form different sliding speeds, so that when the sliding seat 13 is disengaged from the end of the brush roller, the roller seat 21a can also slide in the same direction with the fallen working brush roller 4 at a speed less than the sliding seat 13, so that the fixed seat 11 and the sliding seat 13 are disengaged from the end of the working brush roller 4 together.

[0055] Furthermore, it is well known that for a rotating part, the linear velocity is equal to the product of the angular velocity and the radius of the part. In the reduction transmission mechanism 25, the first gear 253 and the second gear 254 are connected to the same rotating shaft 252, so the angular velocities of the two are the same. Then, the radii of the first gear 253 and the second gear 254 are made different to produce a reduction transmission effect, thereby achieving the linkage and reduction effect of the sliding seat 13 on the roller seat 21a.

[0056] Furthermore, considering the actual speed ratio of the first gear 253 and the second gear 254, the ratio of the outer diameter of the second gear 254 to the first gear 253 is in the range of 1:4-1:2; this ratio range can make the linkage speed of the sliding seat 13 to the roller seat 21a moderate, making the roller changing process smoother.

[0057] Further, if Fig.11 As shown, the rotating support seat 256 provides an installation carrier and rotation support for the rotating shaft 252, wherein the rotating support seat 256 includes a support 256b and a rotating connecting seat 256a connected to the support 256b, and the support 256b is arranged on the base 23, which can provide stable support for the rotating connecting seat 256a and the rotating shaft 252 connected to the rotating connecting seat 256a; the rotating shaft 252 is rotatably connected to the rotating connecting seat 256a along its own axial direction.

[0058] Furthermore, a center hole a is provided on the rotating connecting seat 256a, which connects the two sides of the rotating connecting seat 256a. The rotating shaft 252 is rotatably connected in the center hole a along its own axis, and the outer diameters of the first gear 253 and the second gear 254 are both larger than the outer diameter of the rotating shaft 252. In order to facilitate the installation and adjustment of the speed ratio of the first gear 253 and the second gear 254, at least one of the first gear 253 and the second gear 254 is detachably connected to the rotating shaft 252, so that at least one end of the rotating shaft 252 can pass through the center hole a and be installed on the rotating connecting seat 256a.

[0059] Furthermore, the first gear 253 has a large outer diameter and a large mass. If it is integrally formed on the rotating shaft 252, it will be difficult to install. In addition, the first gear 253 with a large outer diameter is more expensive. Once damaged, the entire rotating shaft 252 and the first gear 253 need to be replaced together. Therefore, in this mechanism, the first gear 253 and the rotating shaft 252 are detachably connected, and the second gear 254 and the rotating shaft 252 are integrally formed. This not only facilitates the disassembly and replacement of the first gear 252, but also reduces the maintenance cost of the mechanism.

[0060] Furthermore, in order to make the rotation of the rotating shaft 252 smoother, the rotating connecting seat 256a is a cylindrical structure with openings at both ends, and matching holes b are symmetrically opened at both ends inside the rotating connecting seat 256a, and the diameter of the matching hole b is larger than the diameter of the center hole a; an axially fixed bearing 2561 is installed in the matching hole b, and the rotating shaft 252 is passed through the bearing 2561.

[0061] Furthermore, the axial positioning of the bearing 2561 is achieved as follows: the bearing 2561 includes a bearing inner ring 2561b and a bearing outer ring 2561a; the two ends of the rotating connecting seat 256a are connected with end covers 2562 for sealing the opening of the rotating connecting seat 256a, and the end cover 2562 seals the opening to seal and prevent dust; the inner side of the bearing outer ring 2561a is tightly against the bottom of the matching hole b, and the outer side of the bearing outer ring 2561a is supported by the end cover 2562, thereby limiting the axial movement of the bearing 2561.

[0062] Furthermore, the axial positioning of the first gear 253 is achieved as follows: an axial positioning assembly is also installed on the end of the rotating shaft 252 connected to the first gear 253, and the axial positioning assembly includes a pressure plate 2564 and a spacer 2563 connected to the outer wall of the rotating shaft 252, the spacer 2563 abuts against the inner end face of the first gear 253, and the pressure plate 2564 is connected to the corresponding end of the rotating shaft 252 by screws and abuts against the outer end face of the first gear 253, so that the first gear 253 remains axially fixed.

[0063] Furthermore, the axial positioning of the rotating shaft 252 is achieved as follows: the rotating shaft 252 includes a main body 2521 and a connecting section 2522 connected to one end of the main body 2521, and the outer diameter of the connecting section 2522 is larger than the outer diameter of the main body 2521; the second gear 254 is integrally formed at the outer end of the connecting section 2522; the inner end surface of the connecting section 2522 abuts against the bearing inner ring 2561b close to the second gear 254, and the opposite end of the spacer 2563 abutting against the first gear 253 passes through the end cover 2562 and abuts against the bearing inner ring 2561b close to the first gear 253 to limit the axial movement of the rotating shaft 252; the axial positioning of the first gear 253 and the rotating shaft 252 is achieved by using the connecting end 2522 at one end of the rotating shaft 252 to abut against the bearing inner ring 2561b, and the spacer 2563 at the other end of the rotating shaft 252 to abut against the bearing inner ring 2561b and the first gear 253 at the same time, which has a simple structure and ingenious design.

[0064] like Figure 8-9As shown, the first rack 251 and the second rack 255 need to slide along the length direction of the base 23, and directly connecting the two racks to the base 23 will cause wear of the racks and the base 23, affecting the accuracy and structural strength of the racks. Therefore, the base 23 has a first plate 257 and a second plate 258 that slide along the length direction of the roller seat 21a. The first rack 251 and the second linkage are both connected to the first plate 257, and the second rack 255 is connected to the second plate 258. When the first linkage is linked to the second linkage, the first plate 257 drives the first rack 251 to slide and The rotating shaft 252 is driven to rotate, and then the second plate 258 drives the second rack 255 to slide in the same direction as the first rack 251 at a second speed which is less than the first speed; the first plate 257 is the mounting carrier of the first rack 251 and the second linkage member, and the second plate 258 is the mounting carrier of the second rack 255, and is also the intermediate carrier connecting the second rack 255 and the roller seat 21a; the two plates are slidably connected to the base 23, which can not only ensure the linkage effect of the sliding seat 13 on the roller seat 21a, but also provide support for the corresponding rack, without the need for the rack to be directly slidably connected to the base 23.

[0065] Further, if Fig. 9 As shown, the base 23 is a frame structure composed of two long horizontal beams and two short longitudinal beams. The base 23 is symmetrically provided with a first guide rail 28 extending along the length direction of the base 23. The roller seat 21a, the connecting plate 257, and the flat plate 258 are all slidably connected to the first guide rail 28; the first guide rail 28 can provide sliding guidance for each sliding component to ensure smooth roller replacement.

[0066] Furthermore, after the roller changing mechanism 2 enters the brushing equipment, the roller seat 21a may have a position deviation, resulting in the roller seat 21a being unable to be aligned with the clamping roller mechanism 1. Therefore, along the width direction of the roller seat 21a, the first flat plate 257 has a connecting plate 259 extending toward the middle of the base 23, and the second linkage is arranged on the connecting plate 259; the base 23 is connected with a driving member, and the driving member is connected to the connecting plate 259; the driving member acts on the connecting plate 259 through its own telescopic action and triggers the reduction transmission mechanism 25 to drive the roller seat 21a to slide along its own length direction until the roller seat 21a is aligned with the clamping roller mechanism 1 up and down; the driving member can slide the roller seat 21a through its own telescopic action when the roller seat 21a is not completely aligned with the clamping roller mechanism 1, so as to make the roller changing process more accurate and efficient.

[0067] Furthermore, the connecting plate 259 extends toward the middle of the base 23 to form a force arm. Therefore, when the driving member acts on the connecting plate 259, it will generate a torque on the first flat plate 257, which may easily cause the first flat plate 257 and the first guide rail 28 to get stuck. Therefore, in order to avoid this phenomenon, a second guide rail 27 corresponding to the connecting plate 259 is provided in the middle of the base 23. The second guide rail 27 is located in the moving buffer area 232 and extends along the length direction of the base 23; the connecting plate 259 is slidably connected to the second guide rail 27; the second guide rail 27 can provide a sliding guide for the connecting plate 259, so that the first flat plate 257 and the connecting plate 259 connected as one have double guidance, and there will be no sliding jamming caused by torsion.

[0068] Further, if Fig. 9 As shown, in order to ensure the efficiency of roller changing, the driving member is a cylinder 26, which includes a cylinder body 261 and a piston rod 262 that can be extended and retracted in the cylinder body 261. The cylinder body 261 is connected to the base 23, and the piston rod 262 is connected to the connecting plate 259; the piston rod 262 can be extended and retracted in the cylinder body 261 and act on the connecting plate 259 to drive the roller seat 21a to slide along its own length direction until the roller seat 21a is aligned with the roller clamping mechanism 1 up and down; the cylinder 26 can be quickly extended and retracted to quickly align the roller seat 21a with the roller clamping mechanism 1.

[0069] Furthermore, the cylinder body 261 is hinged to the base 23, and the piston rod 262 is hinged to the connecting plate 259; the hinged connection method can be direct hinged connection or indirect hinged connection. In the present embodiment, the cylinder body 261 and the piston rod 262 are indirectly hinged. A hinge seat 263 is provided on the base 23, and a pin shaft 263 is passed between the cylinder body 262 and the hinge seat 263 to realize the hinge; a corresponding rotating connecting seat is connected to the connecting plate 259, and the head of the piston rod 261 is hinged to the rotating connecting seat; when the piston rod 262 is extended and retracted in the cylinder body 261, the cylinder body 261 and the piston rod 262 rotate to prevent the piston rod 262 from getting stuck when extending and retracting.

[0070] Further, if Fig. 9 , Fig.12 As shown, the roller seat 21a includes a base 29 and a supporting seat 21 at both ends of the base 29 for supporting the end of the working brush roller 4. The supporting seat 21 includes a supporting surface 211 with its upper end facing the working brush roller 4. The supporting surface 211 is provided with a plurality of inwardly recessed mounting holes 218. The mounting holes 218 have buffer columns 213 protruding from the supporting surface 211 and elastically retractable. The buffer columns 213 abut against the end of the working brush roller 4 and produce elastic contraction in the mounting holes 218, thereby forming an elastic buffer for the working brush roller 4. This is to prevent the working brush roller 4 from having an impact on the supporting seat 21 due to excessive gravity, causing the working brush roller 4 or the supporting seat 21 to deform, thereby making the roller replacement process safer and more economical.

[0071] Specifically, the elastic expansion and contraction of the buffer column 213 is achieved as follows: the supporting surface 211 is arc-shaped, and along the extension direction of the arc, a plurality of mounting holes 218 are evenly distributed on the supporting surface 211 and penetrate the supporting seat 21 in a direction perpendicular to the supporting surface 211. The mounting hole 218 includes a large diameter section 218a and a small diameter section 218b which are sequentially opened downward, and a step surface 215 is formed at the junction of the large diameter section 218a and the small diameter section 218b; the outer diameter of the buffer column 213 is equal to The outer diameter of the small diameter section 218b matches; a plurality of disc springs 214 are sleeved on the buffer column 213, one end of the buffer column 213 is connected to a cap body 212, the top end of the cap body 212 protrudes upward from the supporting surface 211, and a plurality of disc springs 214 are located between the bottom end of the cap body 212 and the step surface 215; when the specification or weight of the working brush roller 4 changes, the buffer elastic force formed by the buffer column 213 on the working brush roller 4 can be changed by disassembling and assembling the number of disc springs 214 sleeved on the buffer column 213.

[0072] Furthermore, the other end of the buffer column 213 passes through the through hole 218b, and the column body of the buffer column 213 passing through the through hole 218b has a threaded section. In order to prevent the buffer column 213 from slipping out of the mounting hole 218 upward, a first nut 216 is threadedly connected to the threaded section, and the first nut 216 abuts against the lower end of the supporting seat 21.

[0073] Furthermore, in addition to limiting the buffer column 213 , the first nut 216 can also slightly adjust the elastic force of the buffer column 213 , that is, by rotating the first nut 216 , the length of the cap body 212 protruding from the supporting surface 211 is changed to adjust the elastic force generated by the multiple disc springs 214 .

[0074] Furthermore, when the working brush roller 4 is not supported, the first nut 216 abuts against the lower end of the supporting seat 21 and puts the multiple disc springs 214 in an elastic compression state, thereby providing an elastic pre-tightening force for the buffer column 213.

[0075] Furthermore, a second nut 216a is threadedly connected to the column body of the buffer column 213 passing through the through hole 218b, and the end face of the second nut 216a abuts against the first nut 216 to prevent the first nut 216 from loosening; the first nut 216 and the second nut 216a constitute a top nut structure, thereby playing an anti-loosening role.

[0076] Furthermore, in order to provide a transverse through hole near the second nut 216a on the threaded section, a cotter pin 217 is installed in the through hole to limit the loosening of the second nut 216a; the cotter pin 217 can prevent the second nut 216a from loosening and block the second nut 216a from escaping from the threaded section.

[0077] Furthermore, the cap body 212 and the buffer column 213 are integrally formed; the integral forming method has good structural strength and is easy to assemble.

[0078] Furthermore, considering the specification and weight variation range of the working brush roller 4 in actual use, the number of disc springs 214 sleeved on the buffer column 213 ranges from 6 to 10.

[0079] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A reduction transmission mechanism for roller changing, characterized in that: include: A first rack (251) is used to move in the same direction as the sliding seat (13); A second rack (255) used for connecting to the roller seat (21a); The reduction assembly comprises a rotating support seat (256) and a reduction member, wherein the reduction member comprises a rotating shaft (252) rotating along its own axis, the rotating shaft (252) being connected to the rotating support seat (256) in a rotating manner along its own axis, two ends of the rotating shaft (252) passing through the rotating support seat (256) and being respectively connected to a first gear (253) and a second gear (254), the outer diameter of the first gear (253) being larger than the outer diameter of the second gear (254), and the first gear (253) and the second gear (254) being respectively meshed with a first rack (251) and a second rack (255).

2. A reduction transmission mechanism for roller changing according to claim 1, characterized in that: The ratio of the outer diameter of the second gear (254) to the outer diameter of the first gear (253) is in the range of 1:4-1:

2.

3. A reduction transmission mechanism for roller changing according to claim 1, characterized in that: The rotating support seat (256) comprises a support seat (256b) and a rotating connection seat (256a) connected to the support seat (256b), and the rotating shaft (252) is rotatably connected to the rotating connection seat (256a) along its own axis direction.

4. A reduction transmission mechanism for roller changing according to claim 3, characterized in that: The rotating connection seat (256a) is provided with a center hole (a) that connects two sides of the rotating connection seat (256a); the rotating shaft (252) is rotatably connected along its own axis in the center hole (a); and the outer diameters of the first gear (253) and the second gear (254) are both larger than the outer diameter of the rotating shaft (252); at least one of the first gear (253) and the second gear (254) is detachably connected to the rotating shaft (252), so that at least one end of the rotating shaft (252) can pass through the center hole (a) and be mounted on the rotating connection seat (256a).

5. A reduction transmission mechanism for roller changing according to claim 4, characterized in that: The first gear (253) and the rotating shaft (252) are detachably connected, and the second gear (254) and the rotating shaft (252) are integrally formed.

6. A reduction transmission mechanism for roller changing according to claim 5, characterized in that: The rotating connection seat (256a) is a cylindrical structure with openings at both ends, and matching holes (b) are symmetrically opened at both ends inside the rotating connection seat (256a), and the diameter of the matching hole (b) is larger than the diameter of the center hole (a); an axially fixed bearing (2561) is installed in the matching hole (b), and the rotating shaft (252) is inserted into the bearing (2561).

7. A reduction transmission mechanism for roller changing according to claim 5, characterized in that: The bearing (2561) comprises a bearing inner ring (2561b) and a bearing outer ring (2561a); end covers (2562) for sealing the opening of the rotating connecting seat (256a) are connected to both ends of the rotating connecting seat (256a); the inner side of the bearing outer ring (2561a) is tightly attached to the bottom of the matching hole (b), and the outer side of the bearing outer ring (2561a) is supported by the end cover (2562), thereby limiting the axial movement of the bearing (2561).

8. A reduction transmission mechanism for roller changing according to claim 7, characterized in that: An axial positioning assembly is also installed on one end of the rotating shaft (252) connected to the first gear (253). The axial positioning assembly includes a pressure plate (2564) and a spacer sleeve (2563) connected to the outer wall of the rotating shaft (252). The spacer sleeve (2563) abuts against the inner end surface of the first gear (253). The pressure plate (2564) is connected to the corresponding end of the rotating shaft (252) by screws and abuts against the outer end surface of the first gear (253), so that the first gear (253) remains axially fixed.

9. A reduction transmission mechanism for roller changing according to claim 8, characterized in that: The rotating shaft (252) comprises a body (2521) and a connecting section (2522) connected to one end of the body (2521), wherein the outer diameter of the connecting section (2522) is larger than the outer diameter of the body (2521); the second gear (254) is integrally formed at the outer end of the connecting section (2522); the inner end surface of the connecting section (2522) abuts against the inner ring (2561b) of the bearing close to the second gear (254); the opposite end of the spacer (2563) abutting against the first gear (253) passes through the end cover (2562) and abuts against the inner ring (2561b) of the bearing close to the first gear (253), so as to limit the axial movement of the rotating shaft (252).

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