Movable roller seat assembly

Abstract

The movable roller seat assembly comprises two roller seats which are used for being connected to a rack in a sliding mode and are in bilateral symmetry, each roller seat comprises two supporting parts which are opposite in the front-back direction and extend downwards, an avoiding groove with the open lower end is formed between the two supporting parts, and bearing blocks are arranged on the inner sides of the supporting parts; two bearing blocks which are opposite front and back on each roller seat form a bearing assembly; the two roller seats can avoid the roller shaft when sliding left and right, so that the bearing assembly forms rigid bearing on the lower brush rollers with different lengths, it is guaranteed that the roller shaft of the lower brush roller does not deform when the lower brush roller is disengaged from the sliding seat and the fixed seat, and the replacement efficiency of the lower brush roller is improved.

Description

Technical Field

[0001] The invention relates to the field of plate and strip grinding, and in particular to a movable roller seat assembly. 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 surface material of the strip is prone to peeling or rusting. In order to remove the rust layer, the strip needs to be polished by the upper and lower brush rollers installed in the steel plate grinding equipment; the upper brush roller and the lower brush roller both include a roller body and roller shafts located at both ends of the roller body; after a long period of grinding, the grinding effect of the brush roller will also decrease, so the brush roller needs to be replaced.

[0003] When replacing the upper brush roller, the roller changing cart can be driven into the brush grinding equipment, but the lower brush roller can usually only be replaced manually. For example, in the oxide scale treatment device with announcement number CN216371592, the oxide scale treatment device includes a movable bearing seat for setting the lower brush roller; two bearing seats are arranged on the bearing seat, one of the two bearing seats is slidable, and the other is fixed, and the two bearing seats can be respectively regarded as a sliding seat and a fixed seat; the roller shafts at both ends of the lower brush roller are respectively inserted into the sliding seat and the fixed seat; when the roller needs to be replaced, since there is no space under the lower brush roller to accommodate the replacement roller cart, the bearing seat needs to be moved out of the equipment, and the lower brush roller is replaced with the assistance of workers, so that the sliding seat and the fixed seat are respectively detached from the roller shafts at both ends of the roller body, which has low efficiency, and the weight of the lower brush roller is large, and the difficulty of replacement is high, which is easy to cause safety hazards.

[0004] In order to improve the efficiency of roller changing, the applicant has conceived a mechanism for changing the roller from above the lower brush roller, including a frame placed on a bearing seat, and a rigid roller seat is prepared to be arranged on the frame to support the roller body of the lower brush roller. However, the design difficulty lies in that the roller seat is located above the lower brush roller, and the roller shafts at both ends of the lower brush roller are respectively stuck in the sliding seat and the fixed seat, and it is difficult for the roller seat to bypass the roller shaft to support the roller body; and the supporting position of the roller seat is different on lower brush rollers of different lengths. Therefore, it is necessary to develop a roller seat assembly, which needs to form a stable support for the roller body of the lower brush rollers of different lengths to ensure that the roller shafts at both ends of the lower brush roller are not deformed when they are detached from the sliding seat and the fixed seat. Summary of the invention

[0005] The present invention provides a movable roller seat assembly, which is slidably connected to two roller seats that can approach or move away from each other and have avoidance grooves at the lower end of a frame, so that the two roller seats can avoid roller shafts when sliding left and right, so that the supporting assembly forms a rigid support for lower brush rollers of different lengths, ensuring that the roller shaft of the lower brush roller is not deformed when the lower brush roller is detached from the sliding seat and the fixed seat, thereby improving the replacement efficiency of the lower brush roller.

[0006] The technical solution of the present invention is achieved in this way: A movable roller seat assembly includes two roller seats that are symmetrical and used for sliding connection on a frame. The roller seats include two supporting parts that are opposite to each other front and back and extend downward. An avoidance groove with an open lower end is formed between the two supporting parts, and a supporting block is provided on the inner side of the supporting part; the two supporting blocks that are opposite to each other front and back on each roller seat constitute a supporting assembly; the two roller seats are separated from each other so that the positions of the two avoidance grooves correspond to the roller axes at the two ends of the corresponding lower brush rollers, and then the two roller seats are close to each other, so that the two supporting assemblies are moved to a predetermined position to support the roller body of the lower brush roller.

[0007] Preferably, a telescopic driving member is connected between the two roller seats and can drive the two roller seats closer to or away from each other by its own telescopic movement; the telescopic driving member can adjust the distance between the two roller seats by its own telescopic movement, so that the beam roller seat can support the lower brush rollers of different length specifications.

[0008] Preferably, the roller seat includes a horizontal plate for sliding connection to the lower end of the frame, two supporting parts are connected to the lower end of the horizontal plate, and a longitudinal plate is provided between the horizontal plate and each supporting part; between the two roller seats, the telescopic drive member is connected between every two left and right opposite longitudinal plates; so that the front and rear ends of the two roller seats can move simultaneously.

[0009] Preferably, a support is provided at the lower end of the horizontal plate, and the middle position of the lower end of the support is concave inward, thereby forming two supporting parts and an avoidance groove located between the two supporting parts.

[0010] Preferably, the support includes at least two vertical plates spaced apart on the left and right, the middle parts of the lower ends of the two vertical plates are concave inward, thereby forming two support parts and an avoidance groove located between the two support parts; a connecting plate is fixedly installed between every two adjacent vertical plates, and the support having a hollow structure is formed between the connecting plate and the two vertical plates; while ensuring the structural strength, the entire roller seat is made lightweight.

[0011] Preferably, the supporting block is provided with a supporting groove open outward, the supporting groove includes a supporting surface for supporting the roller body of the lower brush roller and a limiting surface perpendicular to the supporting surface. When the two supporting components are moved to a predetermined position, the distance between the limiting surfaces on the left and right sides is the same as the distance between the two ends of the roller body of the corresponding lower brush roller, so as to form a restriction on the two ends of the roller body to prevent the lower brush roller from moving laterally in the left and right directions.

[0012] Preferably, the supporting surface is an arcuate surface that matches the roller body of the corresponding lower brush roller; the arcuate surface can fit the outer periphery of the roller body more closely to ensure the supporting effect.

[0013] Preferably, a supporting plate for contacting the end face of the roller body of the lower brush roller is provided on the inner side of the supporting portion, and a supporting surface is provided on the supporting plate, and the supporting surface and the limiting surface are in the same vertical plane; the supporting surface can increase the contact area with the end face of the roller body, thereby forming sufficient limiting force on the lower brush roller.

[0014] Preferably, the telescopic driving member is a driving cylinder, which includes a cylinder body respectively connected to two roller seats and a telescopic rod movable in the cylinder body.

[0015] Preferably, two driving cylinders are arranged between the two roller seats, and the piston rod and cylinder body of each driving cylinder are respectively hinged on two left and right opposite longitudinal plates; the hinged design can prevent the piston rod from getting stuck when it is extended or retracted.

[0016] Preferably, the two roller seats are connected by a telescopic driving member and can move synchronously in the left and right directions; one of the roller seats is provided with a pushing cylinder for acting with the fixed seat and driving the two roller seats to move away from the fixed seat synchronously; when the pushing cylinder is in action, it can provide driving force for the two roller seats and the lower brush roller to move away from the fixed seat at the same time.

[0017] The beneficial effects of the present invention using the above technical solution are: The present invention connects two roller seats that are moved closer to or away from each other through a telescopic driving member in a sliding manner at the lower end of a frame, and two supporting parts with supporting blocks are arranged on the roller seats, and an avoidance groove with an open lower end is formed between the two supporting parts, so that the roller seat can avoid the roller shaft when it moves left and right. When changing the roller, the two roller seats can move away from each other through the telescopic driving member to adjust the spacing, so that the two roller seats are located on both sides of the lower brush roller of corresponding length. After the adjustment is completed, the two roller seats can move closer to each other again through the telescopic driving member, so that the supporting assembly forms a rigid support for the roller body of the lower brush roller of corresponding length, ensuring that the roller shaft of the lower brush roller is not deformed when the lower brush roller is detached from the sliding seat and the fixed seat, thereby improving the replacement efficiency of the lower brush roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the structural diagram of the roller changing assembly; Figure 2 is a structural schematic diagram of the roller changing assembly at another angle; Figure 3 A cross-sectional view of a roller body of a lower brush roller supported by two front and rear opposing support blocks; Figure 4 A schematic diagram of a roller changing assembly placed on the upper end of a bearing seat; Figure 5 It is a schematic diagram of the sliding seat disengaging from the roller shaft at one end of the lower brush roller after the roller body of the lower brush roller is supported; Figure 6 A schematic diagram showing the action of the oil cylinder to push the roller shaft at the other end of the lower brush roller off the fixed seat; Figure 7 This is the structural diagram of the gap compensation mechanism after the support frame is hidden; Figure 8 is a cross-sectional view of the clearance compensation mechanism; Fig. 9 It is an enlarged cross-sectional view of the matching position between the upper end of the connecting rod and the transmission shaft; Fig.10 It is an enlarged view of the pointer and dial on the support frame; Fig.11 It is a structural schematic diagram of the eccentric sleeve; Fig.12 It is a structural schematic diagram of the positioning and adjusting component; Fig.13 The structural diagram is that two roller seats hold the lower brush roller; Fig.14 It is a structural schematic diagram of the roller seat; Fig.15 A schematic diagram of the principle of roller changing assembly at the upper end of the bearing seat; Fig.16 It is a comparison diagram when the preset gap exists and when the preset gap is eliminated; The reference numerals of the drawings are: 1-support frame, 1a-bearing seat, 2-roller seat, 3-push cylinder, 4-gap compensation mechanism, 5-roller body, 51-circular boss, 11-first lifting ear, 12-second lifting ear, 13-first lifting hole, 13a-second lifting hole, 14-sliding seat, 15-fixed seat, 16-guide seat, 17-guide wheel, 18-hydraulic station, 21-driving cylinder, 22-supporting block, 23-control hand wheel, 24-support part, 25-transverse plate, 26-longitudinal plate, 27-reinforcement plate, 41-drive shaft, 42-worm gear transmission box, 43-eccentric adjustment assembly, 221-supporting surface, 222-limiting surface, 231-adjusting rack, 232-adjusting gear, 241-avoiding groove, 242-rest surface, 251-connecting seat, 252-rotating sleeve, 261-fixing plate, 411-adjusting hand wheel, 412-pointer, 413-dial, 431-driving gear, 432-transmission wheel, 432a-transmission shaft, 433-connecting rod, 434-lifting plate, 435-guide plate, 436-eccentric sleeve, 4361-eccentric hole, 4362-retaining ring groove, 4363-annular groove, 437-spherical bearing, 438-output shaft, 439-linkage rod, s-preset clearance. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. 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.

[0020] 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.

[0021] like Figure 1-16 As shown, the specific implementation of the present invention is as follows: This embodiment provides a movable roller seat assembly, which is used in a roller changing mechanism. The roller changing mechanism includes: The bearing assembly includes a bearing seat 1a and a sliding seat 14 and a fixed seat 15 which are arranged on the bearing seat 1a and are used to clamp the roller shafts at both ends of the lower brush roller. The sliding seat 14 can slide along the length direction of the lower brush roller. The sliding seat 14 and the fixed seat 15 are arranged in a box body with a single-side opening on the bearing seat 1a. Roller changing assembly, the roller changing assembly comprises a support frame 1 placed on the upper end of the bearing seat 1a, in this embodiment, the support frame 1 is placed on the upper end of the box; the lower end of the support frame 1 is slidably connected to a movable roller seat assembly, and the movable roller seat assembly comprises two roller seats 2 that are symmetrical on both sides; the roller seat 2 comprises two support parts 24 that are opposite to each other and extend downward, and an avoidance groove 241 with an open lower end is formed between the two support parts 24, and a supporting block 22 is provided on the inner side of the support part 24; the two supporting blocks 22 that are opposite to each other on each roller seat 2 constitute a supporting assembly; a telescopic driving member that can drive the two roller seats to move closer to or away from each other by its own telescopic movement is connected between the two roller seats 2; When unloading the roller, the telescopic drive member drives the two roller seats 2 away from each other so that the positions of the two avoidance grooves 241 correspond to the roller shafts at both ends of the corresponding lower brush roller. Then the telescopic drive member drives the two roller seats 2 closer to each other again, so that the two supporting components move to the predetermined position to support the roller body 5 of the lower brush roller, so that the roller shaft will not be deformed when the sliding seat 14 and the fixed seat 15 fall off the two ends of the lower brush roller.

[0022] Furthermore, the roller body 5 of the lower brush roller includes a roller for arranging brush strips, and the outer diameter of the roller is much larger than the outer diameter of the roller shaft. If the brush strips are not taken into account, the supporting block 22 can be supported on the roller, but in order to avoid the supporting block 22 from contacting the brush strips on the roller and causing deformation of the brush strips, circular bosses 51 for setting the roller shaft are concentrically installed on both ends of the roller, and the outer diameter of the circular boss 51 is smaller than the outer diameter of the roller; after the two roller seats 2 approach each other to a predetermined position, the supporting block 22 in this embodiment supports the roller body 5, which means that after the supporting block 22 moves into place as the roller seat 2, it forms a support for the outer periphery of the circular boss 51 to ensure that the brush strips of the lower brush roller are not squeezed and deformed by the supporting block 22.

[0023] Furthermore, the structure of the roller seat 2 is as follows; the roller seat 2 includes a horizontal plate 25 for sliding connection to the support frame 1, the lower end of the horizontal plate 25 is connected to a support, the middle position of the lower end of the support is concave to form two front and rear opposite support parts 24 and an avoidance groove 241 between the two support parts 24, and a longitudinal plate 26 is provided between the horizontal plate 25 and each support part 24; the telescopic driving member is a driving cylinder 21, and the driving cylinder 21 includes a cylinder body respectively connected to the two roller seats 2 and a telescopic rod movable in the cylinder body; the longitudinal plate 26 is a carrier for installing the driving cylinder 21, and also serves to strengthen the connection between the horizontal plate 25 and the support part 24 Function: The telescopic driving member is connected between every two left and right opposite longitudinal plates 26; so that the front and rear ends of the roller seat 2 can move synchronously; wherein two connecting ears are provided at the head end of the piston rod and the tail end of the cylinder body, and the width between the two connecting ears is greater than the thickness of the longitudinal plate 26. To ensure that it is hinged in place, a fixed plate 261 is connected to the longitudinal plate 26, and hinge holes are processed on the longitudinal plate 26 and the fixed plate 261 at the same time. The fixed plate 261 can increase the thickness of the longitudinal plate 26 to make up for the gap between the longitudinal plate 26 and the connecting ears, so that after the driving cylinder 21 is hinged in place, the driving cylinder 21 remains stable in the front and rear directions.

[0024] Furthermore, in order to ensure the structural strength of the roller seat 2, the roller seat 2 is a welded structural member. For efficient welding, a support is provided at the lower end of the horizontal plate 25, and the middle position of the lower end of the support is concave inward to form two support parts 24 and an avoidance groove 241 located between the two support parts 24; compared with welding two support parts 24 at the lower end of the horizontal plate 25, this design can effectively reduce the welding time; the support includes at least two vertical plates 243 spaced apart on the left and right, and the middle positions of the lower ends of the two vertical plates 243 are concave inward to form two support parts 24 and an avoidance groove 241 located between the two support parts 24; a connecting plate 244 is fixedly installed between every two adjacent vertical plates 243, and the connecting plate 244 and the two vertical plates 243 form the support with a hollow structure; while ensuring the structural strength of the roller seat 2, the entire roller seat 2 is made lightweight.

[0025] Further, if Figure 13-14As shown, in order to ensure that the lower brush roller remains stable when it is disengaged from the sliding seat 14 and the fixed seat 15, a supporting groove open to the outside is provided on the supporting block 22, and the supporting groove includes a supporting surface 221 for supporting the roller body 5 of the lower brush roller, and a limiting surface 222 perpendicular to the supporting surface 221. In order to further fit the outer periphery of the circular boss 51 of the roller body 5, when the two supporting components move to the predetermined position, the distance between the limiting surfaces 222 on the left and right sides is the same as the distance between the two ends of the roller body 5 of the corresponding lower brush roller; so as to form a restriction on the two ends of the roller body 5 to prevent the lower brush roller from moving laterally in the left and right directions. Here, the end face of the roller body 5 refers to the outer end faces of the two circular bosses 51; when the two limiting surfaces 222 are in contact with the outer end faces of the two circular bosses 51 respectively, the supporting block 22 can effectively prevent the lower brush roller from moving laterally.

[0026] Furthermore, the area of ​​the limiting surface 222 on the supporting block 22 is relatively small, and there are only two supporting blocks 22 on each roller seat 2. The two limiting surfaces 222 of the two supporting blocks 22 can only form two limiting points on the outer end surface of the roller body 5. Therefore, in order to increase the stability of the roller body 5, the inner side of the support portion 24 is provided with a supporting plate for contacting the end surface of the roller body 5 of the lower brush roller, and the supporting plate is provided with a supporting surface 242, and the supporting surface 242 and the limiting surface 222 are in the same vertical plane; the supporting surface 242 can increase the contact area with the end surface of the roller body 5, and together with the limiting surface 222, form four limiting points on the end of the roller body 5, so as to form sufficient limiting force on the lower brush roller.

[0027] Furthermore, two driving cylinders 21 are provided between the two roller seats 2, and the piston rod and cylinder body of each driving cylinder 21 are respectively hinged on two left and right opposite longitudinal plates 26; the hinged design can prevent the piston rod from getting stuck when it is extended and retracted.

[0028] Further, when the supporting block 22 holds the roller body 5 of the lower brush roller and the sliding seat 14 slides and disengages from one end of the lower brush roller, in order to ensure that the other end of the lower brush roller quickly disengages from the fixed seat 15, the two roller seats 2 are connected by a telescopic driving member and can move synchronously in the left and right directions; one of the roller seats 2 is provided with a pushing cylinder 3 for acting with the fixed seat 15 and driving the two roller seats 2 to move synchronously away from the fixed seat 15; when the pushing cylinder 3 is actuated, it can provide a driving force for the two roller seats 2 and the lower brush roller to move away from the fixed seat 15 at the same time, and when the pushing cylinder 3 is actuated, it can act on the fixed seat 15 to make the two roller seats 2 slide in the direction away from the fixed seat 15, so that the roller shaft at the other end of the lower brush roller is disengaged from the fixed seat 15.

[0029] Further, if Figure 6-7As shown, the driving cylinder 21 and the pushing cylinder 3 need hydraulic oil to drive when working, so the support frame 1 in this embodiment is a frame structure, and a hydraulic station 18 connected to the driving cylinder 21 and the pushing cylinder 3 through hydraulic oil pipes is provided in the frame structure; the hydraulic station 18 can output hydraulic oil to drive the driving cylinder 21 and the pushing cylinder 3 to move, and the hydraulic station 18 is an existing hydraulic component, and its specific principle is no longer repeated; wherein the frame structure has a plurality of connected windows on the surrounding side walls and the upper and lower end surfaces, and the windows on the upper end surface and the surrounding side walls are connected and sealed by a cover plate, and the hydraulic oil pipe can be penetrated from the lower end window close to the driving cylinder 21 and the pushing cylinder 3 and connected to the hydraulic station 18, ensuring the movement of the driving cylinder 21 and the pushing cylinder 3 while optimizing the layout space.

[0030] Furthermore, the driving cylinder 21 is not only a linkage part for the two roller seats 2 to move closer to or away from each other, but also a connecting part between the two roller seats 2; the two roller seats 2 are connected to form a synchronously movable roller seat assembly through a telescopic driving part; specifically, two guide rails spaced front and back are provided on the support frame 1, and a corresponding connecting seat 251 is installed on the upper end of the cross plate 25 of the roller seat 2, and a sliding sleeve is installed on the connecting seat 251, and the sliding sleeve is slidably connected to the corresponding guide rail; in order to adjust the positions of the two roller seats 2 at any time, the two roller seats 2 are symmetrical with the lower brush roller as the reference when changing the rollers, so as to ensure that the two roller assemblies can simultaneously support the circular bosses 51 at both ends of the roller, such as Fig.12 As shown, a positioning assembly is provided between the support frame 1 and the roller seat assembly, and the positioning assembly includes an adjusting rack 231 and an adjusting gear 232 respectively arranged on the support frame 1 and the roller seat assembly; a control rod is installed on the adjusting gear 232, and a rotating shaft sleeve 252 is installed on the corresponding roller seat 2, and a control rod is installed on the adjusting gear 232, the control rod is in the rotating shaft sleeve 252, and both ends of the control rod pass out of the rotating shaft sleeve 252, one end of the inner side of the control rod is connected to the adjusting gear 252, and the outer end of the control rod is installed with a control hand wheel 23 exposed on the support frame 1; the control hand wheel 23 is turned and the two roller seats 2 are driven to move synchronously in the left and right directions and then stop at the corresponding position, so that before changing the rollers, the two roller seats 2 are symmetrical with respect to the lower brush roller as the reference. Avoid the phenomenon that one end of the roller body 5 of the lower brush roller is supported and the other end is not supported.

[0031] Furthermore, in order to place the roller changing assembly on the upper end of the bearing seat 1a, a hoisting method is adopted in this embodiment, wherein the sling needs to be first hoisted on the hook of the crane, and then the two ends of the sling are respectively hoisted on the support frame 1. In order to ensure that the hoisted roller changing assembly remains horizontal, a hoisting and leveling assembly is provided on the support frame 1. The hoisting and leveling assembly includes a first hoisting ear 11 and a second hoisting ear 12 that are horizontally opposite, the first hoisting ear 11 is provided with a single first hoisting hole 13, and the second hoisting ear 12 is provided with a plurality of horizontally spaced second hoisting holes 13a. One end of the flexible sling is hoisted in the first hoisting hole 13, and the other end of the flexible sling is hoisted in one of the plurality of second hoisting holes 13a. That is to say, the operator can switch the hoisting end of the sling in the plurality of second hoisting holes 13 until the first hoisting ear 11 and the second hoisting ear 12 are at the same height position to keep the hoisted roller changing assembly horizontal.

[0032] Furthermore, in order to ensure that the roller changing assembly is placed in place on the upper end of the bearing seat 1a, a front and rear guiding mechanism and a left and right guiding mechanism are provided between the support frame 1 and the bearing seat 1a. The front and rear guiding mechanism includes an elastic guide wheel 17 arranged on the support frame 1, and a guide block arranged on the bearing seat 1a. The left and right guiding mechanism includes a guide seat 16 arranged on the support frame 1, and a guide column arranged on the bearing seat 1a. Through the cooperation between the elastic guide wheel 17 and the guide block, and the cooperation between the guide seat 16 and the guide column, the roller changing assembly in the hoisting state can be guided in position so that it can be stably placed in the corresponding position on the upper end of the bearing seat 1a; the specific structure of the front and rear guiding mechanism and the left and right guiding mechanism can refer to the corresponding content in the roller device patent with announcement number CN221821042, which will not be repeated here.

[0033] Further, if Fig.16As shown, in an ideal state, after the two front-to-back opposite supporting blocks 22 move into position with the roller seat 2, the supporting blocks 22 should be aligned with the roller body 5 and close to the outer peripheral position of the circular boss 51. However, due to errors, it is difficult to ensure that the position of the supporting blocks 22 is absolutely accurate. Therefore, in order to avoid the supporting blocks 22 interfering with the roller body 5 of the lower brush roller when moving, when the two roller seats 2 approach each other to a predetermined position, a preset gap s is formed between the supporting blocks 22 and the roller body 5 of the lower brush roller; the preset gap s can prevent the supporting blocks 22 from colliding and interfering with the circular boss 51 after moving into position; but the reserved preset gap s will make it difficult for the supporting blocks 22 to contact the circular boss 51 on the roller body 5. Therefore, a gap compensation mechanism 4 is also provided on the support frame 1. The gap compensation mechanism 4 includes a driving assembly and an eccentric adjustment assembly 43 symmetrically arranged on the support frame 1. The eccentric adjustment assembly 43 includes a lifting compensation assembly and a transmission assembly. The transmission assembly includes a group of front-to-back oppositely arranged on the support frame 1 For the transmission wheel 432, the lifting and compensating assembly includes a lifting plate 434 and a group of connecting rods 433 arranged between the lifting plate 434 and the two front and rear opposite transmission wheels 432, the lower end of each connecting rod 433 is hinged on the lifting plate 434, and the upper end of the connecting rod 433 forms an eccentric rotation connection with the corresponding transmission wheel 432; the driving assembly can drive the two groups of left and right opposite transmission wheels 432 to rotate synchronously by a predetermined angle, so that the two lifting plates 434 act downward on the bearing seat 1a and then lift the support frame 1 to a predetermined height to eliminate the preset gap s between the supporting block 22 and the roller body 5; when the transmission wheel 432 rotates, the driving assembly can drive the lifting plate 434 to act on the bearing seat 1a through the eccentric adjustment assembly, thereby forming an upward reaction force on the support frame 1, and lifting the support frame 1 to a predetermined height. The size of the predetermined height is the size of the preset gap s. After eliminating the preset gap s, the supporting block 22 can be close to the outer periphery of the circular boss 51 and support the roller body 5.

[0034] Furthermore, in order to make the lifting plate 434 move downward more stably and smoothly, a lifting guide assembly is provided between the support frame 1 and the lifting plate 434, and the lifting guide assembly includes two front and rear opposite guide blocks arranged on the support frame 1, and guide plates 435 arranged at the front and rear ends of the lifting plate 434, and the guide plates 435 are made of plastic; the two guides form a guide groove, and the two guide plates 435 are in contact with the corresponding inner walls of the guide groove and can move up and down to guide the lifting plate 434.

[0035] Furthermore, the driving assembly needs to drive two groups of front-to-rear opposite transmission wheels 432 in the two eccentric adjustment assemblies to rotate simultaneously. To meet this requirement, the transmission wheel 432 is a transmission gear. The driving assembly includes a driving shaft 41 and two driving gears 431, and a linkage rod 439 is connected between the two driving gears 431; the corresponding driving gears 431 are meshed with every two front-to-rear opposite transmission gears at the same time; the driving shaft 41 is directly or indirectly connected to one of the driving gears 431, and an adjusting hand wheel 411 is connected to the outer end of the driving shaft 41. By rotating the adjusting hand wheel 411, multiple transmission wheels 432 are synchronously rotated to a predetermined angle and stopped at the corresponding position to eliminate the preset gap s between the supporting block 22 and the roller body 5, so as to ensure that the supporting block 22 supports the roller body 5.

[0036] Furthermore, in an ideal state, the drive shaft 41 can be directly connected to one of the drive gears 431. However, in order to prevent the lifting plate 434 from accidentally resetting upward and causing the preset gap s to appear again, the drive shaft 41 in this embodiment acts indirectly on one of the drive gears 431. Specifically, a self-locking transmission member is provided between the drive shaft 41 and the corresponding drive gear 431. The self-locking transmission member is a worm gear transmission box 42. The worm gear transmission box 42 has a worm wheel and a worm gear connected in a transmission manner. Its specific structure is similar to The structure in the worm gear reducer is similar and belongs to the prior art, so it will not be repeated here; the worm gear transmission box 42 has an input end and an output end, and an output shaft 438 is provided at the output end. The drive shaft 41 is connected to the input end of the worm gear transmission box 42, and the corresponding drive gear 431 is connected to the output end of the worm gear transmission box 42; after the drive gear 431 rotates into place, due to the self-locking characteristics of the worm gear, the worm gear transmission box 42 limits the reverse rotation of the drive gear 431, so that the two drive wheels 432 stop at a predetermined position. Prevent the lifting plate 434 from retracting upward due to the reverse rotation of the drive wheel 432.

[0037] Furthermore, a common structure for the transmission connection between the transmission wheel 432 and the connecting rod 433 is to open an eccentric through hole on the transmission wheel 432, and then hinge the connecting rod 433 at the position of the eccentric through hole through a rotating shaft. However, this structure will cause uneven stress distribution of the entire transmission wheel 432, and long-term use will affect the structural strength and service life of the transmission wheel 432. Therefore, in order to reduce maintenance costs, this embodiment improves the structure of the eccentric rotating connection, wherein a rotating shaft hole is provided at the upper end of the connecting rod 433, and an eccentric component is installed in the rotating shaft hole. The eccentric component includes a transmission shaft 432a and an eccentric sleeve 436, and the eccentric sleeve 436 is provided with The eccentric hole 4361 is not concentric with the rotating shaft hole, and one end of the transmission shaft 432a is connected to the transmission wheel 432 in transmission connection, and the other end of the transmission shaft 432a is inserted into the eccentric hole 4361 and is circumferentially fixed with the eccentric sleeve 436; the transmission wheel 432 rotates to drive the lifting plate 434 to act downward on the supporting seat 1a; the eccentric sleeve 436 can rely on the transmission wheel 432 to rotate and form an eccentric drive for the connecting rod 433, and there is no need to open an eccentric through hole on the transmission wheel 432, thereby ensuring that the stress distribution of the transmission wheel 432 is uniform. While driving the lifting plate 434 to move downward, the damage probability and maintenance cost of the transmission wheel 432 are reduced.

[0038] Furthermore, an eccentric distance is formed between the center of the eccentric hole 4361 and the center of the shaft hole. Considering the change in the outer diameter of the roller body 51 of the lower brush roller of different specifications, the size range of the eccentric distance in this embodiment is 3mm-12mm; in order to facilitate determining whether the preset gap s is eliminated in place, the size of the eccentric distance in this embodiment is equal to half of the predetermined height; and the predetermined angle size of the synchronous rotation of the multiple transmission wheels 432 is 180 degrees; in the initial state, the center of the shaft hole is located directly above the center of the center hole 432b; when the multiple transmission wheels 432 rotate synchronously ... When the wheel 432 rotates synchronously by 180 degrees, the center of the shaft hole moves to be directly below the center of the center hole 432b, and the center of the shaft hole moves in the vertical direction by a distance twice the eccentricity, which is the same as the predetermined height and the width of the preset gap s; for example, when the width of the preset gap s is 10 mm and the eccentricity is 5 mm, then in the initial state, the center of the shaft hole of the connecting rod 433 is located at the uppermost end of the center hole. At this time, the preset gap s can be eliminated by controlling the transmission wheel 432 to rotate 180°.

[0039] Furthermore, the design can also ensure that the roller shaft of the lower brush roller will not deform. Specifically, when the preset gap s is eliminated, the supporting surface 221 of the supporting block 22 has been in contact with the circular boss 51 of the roller body 5. However, if the eccentricity is greater than the width of the preset gap s, the worker accidentally exceeds the preset angle when turning the control hand wheel 41, which will exert an upward force on the roller body 5, causing the roller shaft stuck in the sliding seat 14 and the fixed seat 15 to deform. For example, when the width of the preset gap s is 10 mm and the eccentricity is also 10 mm, the preset gap s can be eliminated by rotating the entire transmission wheel 432 by 90°. When the operator mistakenly rotates the transmission wheel 432 by more than 90°, the lifting plate 434 will also It will continue to move downward and press the bearing seat 1a, causing slight deformation of the roller shaft, affecting the service life of the lower brush roller; however, this situation will not occur when the eccentricity in this embodiment is used. In this embodiment, when the preset gap s is eliminated, the center of the rotating shaft hole is already at the bottom of the center of the center hole. When the angle of synchronous rotation of multiple transmission wheels 432 is greater than 180 degrees, the center of the rotating shaft hole rotates around the center of the center hole 432b and approaches the initial position, and drives the two lifting plates 434 that have been extended downward to reset upward. Even if the rotation angle of the transmission wheel 432 is mistakenly made to exceed 180°, it will not cause the supporting block 22 to exert excessive force on the roller body 5, thereby ensuring the structural strength and service life of the lower brush roller.

[0040] Furthermore, in order to facilitate the operator to confirm whether the preset gap s is eliminated, Fig.10 As shown, the outer end of one of the transmission shafts 432a is connected to a pointer 412 exposed on the support frame 1, and a dial 413 corresponding to the position of the pointer 412 is provided on the support frame 1, and a plurality of scale values ​​are evenly distributed along the circumference on the dial 413: the scale value is usually an angle value. For example, when the width of the preset gap s is 10mm and the size of the eccentricity is 5mm, an angle value of 0-180° can be set on the dial 413; after the transmission shaft 432a rotates a corresponding angle and stops at a corresponding position, the scale value variation range of the pointer 412 on the dial 413 is visually inspected, that is, whether the pointer 412 is visually inspected to see if it has rotated 180°, to confirm that the preset gap s between the support block 22 and the roller body 5 has been eliminated.

[0041] Furthermore, the eccentric hole 4361 and the transmission shaft 432a, and the center hole and the transmission shaft 432a are connected by keys so that the transmission wheel 432 and the eccentric sleeve are circumferentially fixed to the transmission shaft 432a; the key connection can be a flat key connection or a spline connection.

[0042] Further, if Fig. 9As shown, in an ideal state, the transmission shaft 432a always maintains a concentric state with the eccentric hole 4361 when rotating. However, due to manufacturing and installation errors, a slight relative displacement will be generated in the lateral direction with the eccentric hole 4361 when the transmission shaft 432a rotates, which is the so-called misalignment phenomenon. In order to prevent the misalignment phenomenon from generating a lateral force on the connecting rod 433 and affecting the smooth movement of the connecting rod 433, a spherical bearing 437 is installed in the rotating shaft hole, and the spherical bearing 437 is sleeved on the outer wall of the eccentric sleeve 436; the contact surface between the inner ring and the outer ring of the spherical bearing 437 is spherical, and its inner ring is sleeved on the outer wall of the eccentric sleeve 436. While ensuring the smooth rotation of the transmission shaft 432a in the circumferential direction, the connecting rod 433 is allowed to swing relative to the transmission shaft 432a in the lateral direction to prevent the connecting rod 433 from being subjected to excessive lateral force.

[0043] Furthermore, end covers are provided at both ends of the shaft hole of the connecting rod 433 to seal the shaft hole, thereby ensuring that the components in the shaft hole are isolated from the outside world. At the same time, the end covers can also limit the movement of the joint bearing 437. Specifically, two retaining ring grooves 4362 corresponding to the positions of the two ends of the joint bearing 437 are provided on the outer wall of the eccentric sleeve 436. Retaining rings are provided in the retaining ring grooves 4362. The two retaining rings are respectively supported by two end covers to limit the axial movement of the joint bearing 437.

[0044] Furthermore, the position where the eccentric sleeve 436 sets the joint bearing 437 also has an annular groove 4363, which can accommodate lubricant to make the rotation of the transmission shaft 432a smoother, and can also serve as an installation mark so that the joint bearing 437 can be quickly installed in place.

[0045] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A movable roller seat assembly, characterized in that: The invention comprises two roller seats (2) which are symmetrical and are used for sliding connection to a frame (1), the roller seats (2) comprising two supporting parts (24) which are opposite to each other in the front and rear and extend downward, an avoidance groove (241) with an open lower end is formed between the two supporting parts (24), and a supporting block (22) is provided inside the supporting part (24); the two supporting blocks (22) which are opposite to each other in the front and rear on each roller seat (2) constitute a supporting assembly; The two roller seats (2) are moved away from each other so that the positions of the two avoidance grooves (241) correspond to the roller shafts at the two ends of the corresponding lower brush rollers, and then the two roller seats (2) are moved closer to each other so that the two supporting assemblies are moved to a predetermined position to support the roller body (5) of the lower brush roller.

2. A movable roller seat assembly according to claim 1, characterized in that: A telescopic driving member is connected between the two roller seats (2) and can drive the two roller seats to move closer to or farther from each other through its own telescopic movement.

3. A movable roller seat assembly according to claim 2, characterized in that: The roller seat (2) comprises a transverse plate (25) for being slidably connected to the lower end of the frame (1), two support parts (24) being connected to the lower end of the transverse plate (25), and a longitudinal plate (26) being provided between the transverse plate (25) and each support part (24); and the telescopic driving member is connected between each two longitudinal plates which are opposite to each other on the left and right between the two roller seats (2).

4. A movable roller seat assembly according to claim 3, characterized in that: A support is provided at the lower end of the transverse plate (25), and the middle portion of the lower end of the support is concave inwardly, thereby forming two support portions (24) and an avoidance groove (241) located between the two support portions (24).

5. The movable roller seat assembly according to claim 4, characterized in that: The support comprises at least two vertical plates (243) spaced apart from each other, wherein the middle parts of the lower ends of the two vertical plates (243) are concave inwards, thereby forming two support portions (24) and an avoidance groove (241) located between the two support portions (24); a connecting plate (244) is fixedly installed between every two adjacent vertical plates (243), and a hollow structure of the support is formed between the connecting plate (244) and the two vertical plates (243).

6. The movable roller seat assembly according to claim 1, characterized in that: The supporting block (22) is provided with a supporting groove open outwards, the supporting groove comprising a supporting surface (221) for supporting the roller body (5) of the lower brush roller, and a limiting surface (222) perpendicular to the supporting surface (221); when the two supporting components move to a predetermined position, the distance between the limiting surfaces (222) on the left and right sides is the same as the distance between the two ends of the roller body (5) of the corresponding lower brush roller.

7. A movable roller seat assembly according to claim 6, characterized in that: The supporting surface (221) is an arc-shaped surface that matches the roller body (5) of the corresponding lower brush roller.

8. The movable roller seat assembly according to claim 6, characterized in that: The inner side of the support portion (24) is provided with a contact plate for contacting the end surface of the roller body (5) of the lower brush roller, and the contact plate is provided with a contact surface (242), and the contact surface (242) and the limiting surface (222) are located on the same vertical plane.

9. The movable roller seat assembly according to claim 3, characterized in that: The telescopic driving member is a driving oil cylinder (21), and the driving oil cylinder (21) comprises a cylinder body respectively connected to two roller seats (2) and a telescopic rod movable in the cylinder body.

10. The movable roller seat assembly according to claim 8, characterized in that: Two driving oil cylinders (21) are arranged between the two roller seats (2), and the piston rod and cylinder body of each driving oil cylinder (21) are respectively hinged on two longitudinal plates (26) opposite to each other on the left and right.

11. The movable roller seat assembly according to claim 2, characterized in that: The two roller seats (2) are connected via a telescopic drive member and can move synchronously in the left-right direction; one of the roller seats (2) is provided with a pushing cylinder (3) for acting with the fixed seat (15) and driving the two roller seats (2) to synchronously move away from the fixed seat (15).

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