Carrier roller mechanism for replacing lower brush roller

Abstract

The carrier roller mechanism 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 utility model relates to the field of plate strip polishing, in particular to a carrier roller mechanism for replacing a lower brush roller. BACKGROUND

[0002] Steel plate is also called plate strip, and the plate strip is rolled up for storage after being manufactured, that is, a common steel coil. The steel coil enters a corresponding product manufacturing and processing plant according to different use requirements and is manufactured into corresponding parts. During the period from when the plate strip enters the processing plant to when the plate strip is cut and processed, the surface material of the plate strip is prone to peeling or rusting. To remove the rust layer, the plate strip needs to be polished by the upper brush roller and the lower brush roller installed in the steel plate brushing equipment in opposite directions. The upper brush roller and the lower brush roller each include a roller body and roller shafts located at both ends of the roller body. After a long time of polishing, the polishing effect of the brush roller will also decrease, so the brush roller needs to be replaced.

[0003] When the upper brush roller is replaced, the roller replacement vehicle can be opened into the brushing equipment, but the lower brush roller can usually only be replaced manually. For example, in the scale treatment device disclosed in the announcement No. CN216371592, the scale treatment device includes a movable bearing seat for setting the lower brush roller. The bearing seat is provided with two bearing seats, one of which is slidable, and the other is fixedly arranged. 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 clamped into the sliding seat and the fixed seat. When the roller needs to be replaced, there is no space to accommodate the roller replacement vehicle below the lower brush roller, so the bearing seat needs to be moved out of the equipment. With the assistance of workers, the lower brush roller is replaced, so that the sliding seat and the fixed seat are respectively separated from the roller shafts at both ends of the roller body. The efficiency is low, and the weight of the lower brush roller is large, so the replacement is difficult and safety hazards are easily caused.

[0004] To improve the roller replacement efficiency, the applicant conceives a mechanism for replacing the roller from above the lower brush roller, which includes a rack for being placed on the bearing seat and is prepared to set a rigid roller seat to support the roller body of the lower brush roller on the rack. However, the difficulty in design 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 clamped in the sliding seat and the fixed seat, so it is difficult for the roller seat to bypass the roller shafts to form support for the roller body. Moreover, the support positions of the roller seat are different on lower brush rollers of different length specifications, so a roller seat assembly needs to be developed. The roller seat assembly needs to stably support the roller body of the lower brush roller of different length specifications to ensure that the roller shafts at both ends of the lower brush roller will not be deformed when the roller shafts are separated from the sliding seat and the fixed seat. SUMMARY

[0005] The utility model provides a kind of for the replacement of lower brush roller roller mechanism, by being slidably connected with two mutually close or far away, and with the roller seat of avoiding slot in the lower end of rack, two roller seats can avoid roller shaft when sliding left and right, to make rigid support of support assembly to different length lower brush roller, guarantee the roller shaft of lower brush roller when lower brush roller is disconnected from sliding seat and fixed seat, improve the replacement efficiency of lower brush roller.

[0006] The technical scheme of the utility model is as follows:

[0007] A kind of for the replacement of lower brush roller roller mechanism, including for sliding connection in rack, and two roller seats symmetrical left and right, roller seat includes two front and rear opposite and downwardly extending support part, open lower end avoiding slot is formed between two support parts, support block is equipped in support part inside;Two support blocks opposite in each roller seat constitute support assembly;Two roller seats are mutually far away, to make the position of two avoiding slots with the roller shaft of corresponding lower brush roller both ends correspond, then two roller seats are mutually close, to make two support assemblies move to predetermined position, to form support to the roller body of lower brush roller.

[0008] As preferred, the two roller seats are connected with the telescopic drive that can drive the two roller seats to be close or far away by itself telescopic;Telescopic drive can adjust the distance between two roller seats by itself telescopic, so that beam roller seat forms support to lower brush roller of different length specifications.

[0009] As preferred, the roller seat includes a horizontal plate for sliding connection at the lower end of the rack, the two support parts are connected at the lower end of the horizontal plate, and a vertical plate is provided between the horizontal plate and each support part;Between the two roller seats, the telescopic drive is connected between every two left and right vertical plates;The front and rear ends of the two roller seats can be moved simultaneously.

[0010] As preferred, the lower end of the horizontal plate is provided with a support, and the middle part of the lower end of the support is concave inward, thereby forming two support parts and an avoiding slot between the two support parts.

[0011] As preferred, the support includes at least two left and right spaced vertical plates, the middle part of the lower end of the two vertical plates is concave inward, thereby forming two support parts and an avoiding slot between the two support parts;A connecting plate is fixedly installed between every two adjacent vertical plates, and the connecting plate and the two vertical plates form the hollow structure of the support;While ensuring the structural strength, the entire roller seat is lightweight.

[0012] As preferred, the support block is provided with an outwardly open support slot, the support slot includes a support surface for supporting the roller body of the lower brush roller and a limiting surface perpendicular to the support surface, when the two support assemblies move to the 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;To limit the two ends of the roller body, prevent the lower brush roller from moving transversely in the left and right directions.

[0013] Preferably, the supporting surface is an arc surface matching the roller body of the corresponding lower brush roller; the arc surface can better match the outer periphery of the roller body, thereby ensuring the supporting effect.

[0014] Preferably, the inner side of the supporting part is provided with an abutting plate for contacting the end surface of the roller body of the lower brush roller, and the abutting plate is provided with an abutting surface, which is in the same vertical plane as the limiting surface; the abutting surface can increase the contact area with the end surface of the roller body, thereby forming sufficient limiting force on the lower brush roller.

[0015] Preferably, the telescopic driving member is a driving oil cylinder, which includes a cylinder body connected to the two roller seats respectively and a telescopic rod movably arranged in the cylinder body.

[0016] Preferably, two driving oil cylinders are arranged between the two roller seats, and the piston rod and the cylinder body of each driving oil cylinder are hingedly connected to each two opposite longitudinal plates; the hinged design can prevent the piston rod from being stuck during extension and retraction.

[0017] Preferably, the two roller seats are connected by the telescopic driving member and can move synchronously in the left-right direction; one of the roller seats is provided with a pushing oil cylinder for acting on the fixed seat and driving the two roller seats to move away from the fixed seat synchronously; the pushing oil cylinder can provide driving force for the two roller seats and the lower brush roller to move away from the fixed seat simultaneously when the pushing oil cylinder is actuated.

[0018] The utility model discloses the beneficial effects of the above technical scheme are as follows:

[0019] The utility model discloses a rack lower end sliding connection two through telescopic driving member each other close or far apart roller seat, and setting up two with supporting block's supporting part on the roller seat, and the two supporting parts form the avoidance slot of lower end opening, make the roller shaft can avoid when the roller seat is left and right activity, when the roller is changed, two roller seats can through telescopic driving member each other far apart to adjust interval, make two roller seats be located corresponding length lower brush roller's both sides, after adjusting, two roller seats can through telescopic driving member each other close again, make the rigid supporting of supporting subassembly to corresponding length lower brush roller's roller body, guarantee lower brush roller's roller shaft not to be deformed when lower brush roller is separated from sliding seat and fixed seat, improve the replacement efficiency of lower brush roller. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure diagram of the roller changing assembly;

[0021] Figure 2 It is the structure schematic view of the roller changing assembly from another angle;

[0022] Figure 3 It is the sectional view of two front and back opposite supporting blocks supporting the roller body of the lower brush roller;

[0023] Figure 4Fig. 6 is a schematic view of the roll changing assembly on the end of the bearing seat;

[0024] Figure 5 Fig. 7 is a schematic view of the roll body of the lower brush roll being held, the sliding seat being disengaged from the roll shaft at one end of the lower brush roll;

[0025] Figure 6 Fig. 8 is a schematic view of the push cylinder being actuated and the roll shaft at the other end of the lower brush roll being disengaged from the fixed seat;

[0026] Figure 7 Fig. 9 is a structural view of the gap compensation mechanism after the support frame is removed;

[0027] Figure 8 Fig. 10 is a sectional view of the gap compensation mechanism;

[0028] Figure 9 Fig. 11 is an enlarged sectional view of the upper end of the connecting rod and the transmission shaft in the engaged position;

[0029] Figure 10 Fig. 12 is an enlarged view of the pointer and the scale on the support frame;

[0030] Figure 11 Fig. 13 is a structural schematic view of the eccentric sleeve;

[0031] Figure 12 Fig. 14 is a structural schematic view of the positioning and adjusting assembly;

[0032] Figure 13 Fig. 15 is a structural view of the two roll seats holding the lower brush roll;

[0033] Figure 14 Fig. 16 is a structural schematic view of the roll seat;

[0034] Figure 15 Fig. 17 is a schematic view of the roll changing assembly on the end of the bearing seat;

[0035] Figure 16 Fig. 18 is a comparison view of when the preset gap exists and when the preset gap is eliminated;

[0036] The reference signs 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 lug, 12-second lifting lug, 13-first lifting hole, 13a-second lifting hole, 14-sliding seat, 15-fixing seat, 16-guiding seat, 17-guiding wheel, 18-hydraulic station, 21-driving cylinder, 22-supporting block, 23-control hand wheel, 24-supporting part, 25-cross plate, 26-longitudinal plate, 27-strengthening plate, 41-driving shaft, 42-worm and gear transmission box, 43-eccentric adjusting assembly, 221-supporting surface, 222-limiting surface, 231-adjusting rack, 232-adjusting gear, 241-avoiding groove, 242-abutting surface, 251-connecting seat, 252-rotating shaft sleeve, 261-fixing plate, 411-adjusting hand wheel, 412-pointer, 413-dial, 431-driving gear, 432-driving wheel, 432a-driving shaft, 433-connecting rod, 434-lifting plate, 435-guiding plate, 436-eccentric sleeve, 4361-eccentric hole, 4362-retaining ring groove, 4363-annular groove, 437-knuckle bearing, 438-output shaft, 439-linkage rod, s-pre-set gap. DETAILED DESCRIPTION

[0037] In order to enable the above-mentioned purpose, features and advantages of the present application to be more clearly understood, the present application will be described in further detail below with reference to the 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.

[0038] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced without employing some of the specific details described below, and thus, the scope of the present application is not limited to the specific embodiments disclosed below.

[0039] As shown in the present application, the specific embodiments are as follows: Figures 1-16

[0040] The present embodiment provides a roller mechanism for replacing a lower brush roller, the movable roller assembly is used on the roller replacing mechanism, and the roller replacing mechanism comprises:

[0041] The bearing assembly comprises a bearing seat 1a and a sliding seat 14 and a fixing seat 15 arranged on the bearing seat 1a and used for clamping the roller shafts at two ends of the lower brush roller, and the sliding seat 14 can slide along the length direction of the lower brush roller; the sliding seat 14 and the fixing seat 15 are arranged in the one-side opening box on the bearing seat 1a;

[0042] ​The roll changing assembly comprises a support frame 1 placed on the upper end of the bearing seat 1a, and 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 slidingly connected with the movable roll seat assembly, and the movable roll seat assembly comprises two left-right symmetrical roll seats 2; the roll seat 2 comprises two front-rear opposite support parts 24 extending downward, and the two support parts 24 form an open lower end avoiding groove 241 therebetween, and the inner side of the support part 24 is provided with a supporting block 22; the two supporting blocks 22 on each roll seat 2 constitute a supporting assembly; the two roll seats 2 are connected with the telescopic driving member which can drive the two roll seats to approach or move away from each other through self-telescopic driving;

[0043] When the roll is unloaded, the telescopic driving member drives the two roll seats 2 to move away from each other, so that the positions of the two avoiding grooves 241 correspond to the roll shafts at the two ends of the corresponding lower brush roll, and then the telescopic driving member drives the two roll seats 2 to move close to each other again, so that the two supporting assemblies move to the predetermined position to form supporting for the roll body 5 of the lower brush roll, so that the slide seat 14 and the fixed seat 15 do not deform when the roll shafts at the two ends of the lower brush roll fall off.

[0044] Further, the roll body 5 of the lower brush roll comprises a roller for arranging brush strips, and the outer diameter of the roller is much larger than the outer diameter of the roll shaft. If the brush strips are not considered, the supporting block 22 can be supported on the roller, but in order to avoid the deformation of the brush strips caused by the contact between the supporting block 22 and the brush strips on the roller, the left and right ends of the roller are both concentrically provided with a circular boss 51 for arranging the roll shaft, and the outer diameter of the circular boss 51 is smaller than the outer diameter of the roller; after the two roll seats 2 move close to each other to the predetermined position, the supporting of the supporting block 22 to the roll body 5 in this embodiment refers to the supporting of the outer periphery of the circular boss 51 after the roll seat 2 moves to the position, so as to ensure that the brush strips of the lower brush roll are not deformed by the extrusion of the supporting block 22.

[0045] Further, the structure of the roller seat 2 is as follows: the roller seat 2 comprises a horizontal plate 25 for sliding connection on the support frame 1, a support is connected to the lower end of the horizontal plate 25, the lower end of the support is recessed in the middle position to form two front and rear opposite support portions 24 and an avoiding slot 241 between the two support portions 24, and a vertical plate 26 is arranged between the horizontal plate 25 and each support portion 24; the telescopic driving member is a driving oil cylinder 21, which comprises a cylinder body connected to the two roller seats 2 respectively, and a telescopic rod movably arranged in the cylinder body; the vertical plate 26 is a carrier for installation of the driving oil cylinder 21, and also plays a reinforcing role between the horizontal plate 25 and the support portion 24; the telescopic driving member is connected between every two left and right opposite vertical plates 26; so that the front and rear ends of the roller seat 2 can move synchronously; wherein the head end position of the piston rod and the tail end position of the cylinder body are both provided with two connecting ears, the width between the two connecting ears is greater than the thickness of the vertical plate 26, in order to ensure that the hinge is in place, a fixed plate 261 is connected to the vertical plate 26, and hinge holes are simultaneously processed on the vertical plate 26 and the fixed plate 261, the fixed plate 261 can increase the thickness of the vertical plate 26 to compensate for the gap between the vertical plate 26 and the connecting ear, so that the driving oil cylinder 21 remains stable in the front and rear directions after being hinged in place.

[0046] Further, in order to ensure the structural strength of the roller seat 2, the roller seat 2 is a welded structural member, in order to improve the welding efficiency, the lower end of the horizontal plate 25 is provided with a support, the lower end of the support is recessed in the middle position to form two support portions 24 and an avoiding slot 241 between the two support portions 24; compared with welding two support portions 24 at the lower end of the horizontal plate 25, this design can effectively reduce the welding time; the support comprises at least two left and right spaced vertical plates 243, the lower end of the two vertical plates 243 is recessed in the middle position to form two support portions 24 and an avoiding slot 241 between the two support portions 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 a hollow structure of the support; while ensuring the structural strength of the roller seat 2, the entire roller seat 2 is lightened.

[0047] Further, as shown in Figures 13-14 In order to ensure that the lower brush roller remains stable when it is separated from the sliding seat 14 and the fixed seat 15, the supporting block 22 is provided with an outwardly open supporting slot, which comprises 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 match the outer periphery of the circular boss 51 of the roller body 5, 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 corresponding lower brush roller when the two supporting assemblies move to the predetermined position; so as to limit the two ends of the roller body 5, and prevent the lower brush roller from moving transversely in the left and right directions. Here, the end surface of the roller body 5 refers to the outer end surface of the two circular bosses 51; when the two limiting surfaces 222 are in contact with the outer end surfaces of the two circular bosses 51 respectively, the supporting block 22 can effectively prevent the lower brush roller from moving transversely.

[0048] Further, the area of the limiting surface 222 on the supporting block 22 is small, and there are only two supporting blocks 22 on each roller seat 2, and 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, so as to increase the stability of the roller body 5, the inner side of the supporting part 24 is provided with an abutting plate for contacting the end surface of the roller body 5 of the lower brush roller, and the abutting plate is provided with an abutting surface 242, which is in the same vertical plane as the limiting surface 222; the abutting surface 242 can increase the contact area with the end surface of the roller body 5, and together with the limiting surface 222, forms four limiting points on the end of the roller body 5 to form sufficient limiting force on the lower brush roller.

[0049] Further, 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 to each two opposite longitudinal plates 26; the hinged design can prevent the piston rod from being stuck when it is extended and retracted.

[0050] Further, when the supporting block 22 supports the roller body 5 of the lower brush roller, and the sliding seat 14 slides and is separated from one end of the lower brush roller, in order to ensure that the other end of the lower brush roller is quickly separated from the fixing seat 15, the two roller seats 2 are connected through the telescopic driving member and can move synchronously in the left-right direction; one of the roller seats 2 is provided with a pushing oil cylinder 3 for acting on the fixing seat 15 and driving the two roller seats 2 to move away from the fixing seat 15 synchronously; the pushing oil cylinder 3 can provide driving force for the two roller seats 2 and the lower brush roller to move away from the fixing seat 15 simultaneously when it is in action, and the pushing oil cylinder 3 can act on the fixing seat 15 when it is in action, so that the two roller seats 2 slide away from the fixing seat 15, so that the roller shaft of the other end of the lower brush roller is separated from the fixing seat 15.

[0051] Further, as shown in Figures 6-7 the driving oil cylinder 21 and the pushing oil cylinder 3 need to be driven by hydraulic oil when working, so the support frame 1 in the embodiment is a frame structure, and the frame structure is provided with a hydraulic station 18 connected with the driving oil cylinder 21 and the pushing oil cylinder 3 through the hydraulic oil pipe; the hydraulic station 18 can output hydraulic oil to drive the driving oil cylinder 21 and the pushing oil cylinder 3 to act, and the hydraulic station 18 is an existing hydraulic component, and its specific principle will not be described here; the four peripheral side walls and the upper and lower end surfaces of the frame structure have a plurality of interconnected windows, the windows on the upper end surface and the four peripheral side walls are connected and sealed by the cover plates, the hydraulic oil pipe can be inserted from the lower end window close to the driving oil cylinder 21 and the pushing oil cylinder 3 and connected with the hydraulic station 18, so as to ensure that the driving oil cylinder 21 and the pushing oil cylinder 3 act at the same time, and optimize the layout space.

[0052] Further, the driving oil cylinder 21 is not only the linkage for moving the two roller seats 2 closer or farther away from each other, but also the connecting piece between the two roller seats 2; the two roller seats 2 are connected as a roller seat assembly that can move synchronously through the telescopic driving piece; specifically, the support frame 1 is provided with two front and rear spaced apart guide rails, the upper end of the horizontal plate 25 of the roller seat 2 is provided with a corresponding connecting seat 251, the connecting seat 251 is provided with a sliding sleeve, and the sliding sleeve is slidingly connected to the corresponding guide rail; in order to adjust the position of the two roller seats 2 at any time, the two roller seats 2 are symmetrically arranged left and right with the brush roller as the reference during roll changing, so as to ensure that the two roller assemblies can simultaneously support the circular bosses 51 at both ends of the roller cylinder. Figure 12 As shown, the support frame 1 and the roller seat assembly are provided with a positioning assembly, the positioning assembly includes an adjusting rack 231 and an adjusting gear 232 arranged on the support frame 1 and the roller seat assembly, respectively; the adjusting gear 232 is provided with a control rod, the corresponding roller seat 2 is provided with a rotating shaft sleeve 252, the adjusting gear 232 is provided with a control rod, the control rod is located in the rotating shaft sleeve 252, and the control rod penetrates out of the rotating shaft sleeve 252 at both ends, the inner side of the control rod is connected with the adjusting gear 252, and the outer end of the control rod is provided with a control handle 23 exposed on the support frame 1; after rotating the control handle 23 and driving the two roller seats 2 to synchronously move in the left and right directions and stopping at the corresponding positions, the two roller seats 2 are symmetrically arranged left and right with the brush roller as the reference before roll changing, so as to 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.

[0053] Further, in order to place the roll changing assembly on the upper end of the bearing seat 1a, a lifting method is adopted in the embodiment, in which the lifting cable is first hoisted on the hook of a travelling crane, and then the two ends of the lifting cable are respectively hoisted on the support frame 1; in order to ensure that the hoisted roll changing assembly remains horizontal, the support frame 1 is provided with a lifting leveling assembly, the lifting leveling assembly includes horizontally opposite first and second lifting lugs 11 and 12, the first lifting lug 11 is provided with a single first lifting hole 13, and the second lifting lug 12 is provided with a plurality of horizontally spaced second lifting holes 13a; one end of the flexible lifting cable is hoisted in the first lifting hole 13, and the other end of the flexible lifting cable is hoisted in one of the plurality of second lifting holes 13a; that is, the operator can switch the hoisting end of the lifting cable in the plurality of second lifting holes 13 until the first and second lifting lugs 11 and 12 are at the same height position, so that the hoisted roll changing assembly remains horizontal.

[0054] Furthermore, to ensure that the roller changing assembly is placed in place on the upper end of the support seat 1a, a front-to-back guide mechanism and a left-to-right guide mechanism are provided between the support frame 1 and the support seat 1a. The front-to-back guide mechanism includes an elastic guide wheel 17 mounted on the support frame 1 and a guide block mounted on the support seat 1a. The left-to-right guide mechanism includes a guide seat 16 mounted on the support frame 1 and a guide column mounted on the support seat 1a. Through the cooperation of the elastic guide wheel 17 and the guide block, and the cooperation of the guide seat 16 and the guide column, the position of the roller changing assembly in the hoisting state can be guided, so that it is stably placed in the corresponding position on the upper end of the support seat 1a. The specific structure of the front-to-back guide mechanism and the left-to-right guide mechanism can be referred to the corresponding content in the roller device patent with announcement number CN221821042, and will not be repeated here.

[0055] Furthermore, such as Figure 16 As shown, ideally, after the two opposing support blocks 22 move into position with the roller seat 2, the support blocks 22 should be aligned with the roller body 5 and closely adhere to the outer periphery of the circular boss 51. However, due to error, the position of the support blocks 22 is difficult to guarantee absolute accuracy. Therefore, to avoid interference between the support blocks 22 and the roller body 5 of the lower brush roller when they move, a preset gap s is formed between the support blocks 22 and the roller body 5 of the lower brush roller when the two roller seats 2 approach each other to the predetermined position. This preset gap s can prevent the support blocks 22 from colliding and interfering with the circular boss 51 after they move into position. However, the preset gap s makes it difficult for the support blocks 22 to contact the circular boss 51 on the roller body 5. Therefore, the support frame 1 is also provided with a gap compensation mechanism 4. The gap compensation mechanism 4 includes a drive 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 set of front and rear opposing support blocks 22 arranged on the support frame 1. The lifting compensation assembly includes a lifting plate 434 and a set of connecting rods 433 disposed between the lifting plate 434 and two front-to-back opposing transmission wheels 432. The lower end of each connecting rod 433 is hinged to the lifting plate 434, and the upper end of the connecting rod 433 is eccentrically rotated with the corresponding transmission wheel 432. The drive assembly can drive the two sets of left-to-right opposing 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 lift the support frame 1 to a predetermined height to eliminate the preset gap s between the support block 22 and the roller body 5. When the transmission wheel 432 rotates, the drive 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 raising 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 support block 22 can closely adhere to the outer periphery of the circular boss 51 and support the roller body 5.

[0056] Further, in order to make the lifting plate 434 move downward more stably and smoothly, a lifting guide assembly is arranged between the support frame 1 and the lifting plate 434, which comprises two front and rear guide blocks arranged on the support frame 1 and two 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 guide blocks 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.

[0057] Further, the driving assembly needs to drive the two groups of front and rear transmission wheels 432 in the two eccentric adjusting assemblies to rotate at the same time, in order to meet this requirement, the transmission wheel 432 is a transmission gear, the driving assembly comprises 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 engaged with every two front and rear transmission gears at the same time; the driving shaft 41 is directly or indirectly connected in transmission with one of the driving gears 431, and an adjusting hand wheel 411 is connected to the outer end of the driving shaft 41; rotating the adjusting hand wheel 411 makes the plurality of transmission wheels 432 rotate synchronously by a predetermined angle and stop at the corresponding positions, so as to eliminate the preset gap s between the bearing block 22 and the roller body 5; and the bearing block 22 is ensured to form a bearing for the roller body 5.

[0058] Further, in an ideal state, the driving shaft 41 can be directly connected with one of the driving gears 431, but in order to avoid the preset gap s from appearing again due to the upward resetting of the lifting plate 434, in the embodiment, the driving shaft 41 indirectly acts on one of the driving gears 431, specifically, a self-locking transmission member is arranged between the driving shaft 41 and the corresponding driving gear 431, which is a worm gear transmission box 42, and the worm gear transmission box 42 has a worm gear and a worm inside which are in transmission connection, and the specific structure is similar to that in the worm gear reducer, which belongs to the prior art and will not be described here; the worm gear transmission box 42 has an input end and an output end, and an output shaft 438 is arranged at the position of the output end, the driving shaft 41 is connected with the input end of the worm gear transmission box 42, and the corresponding driving gear 431 is connected with the output end of the worm gear transmission box 42; after the driving gear 431 is rotated to the position, due to the self-locking property of the worm gear, the worm gear transmission box 42 limits the reverse rotation of the driving gear 431, so that the two transmission wheels 432 stop at the predetermined positions, preventing the upward retraction of the lifting plate 434 caused by the reverse rotation of the transmission wheel 432.

[0059] Further, the common structure that the transmission wheel 432 and the connecting rod 433 form a transmission connection should be that an eccentric through hole is arranged on the transmission wheel 432, and then a rotating shaft is used to connect the connecting rod 433 at the position of the eccentric through hole, but this structure will cause uneven stress distribution of the whole transmission wheel 432, and will affect the structural strength and service life of the transmission wheel 432 in long-term use, therefore, in order to reduce the maintenance cost, the structure of the eccentric rotating connection is improved in the embodiment, wherein an eccentric assembly is arranged in a rotating shaft hole arranged at the upper end of the connecting rod 433, the eccentric assembly comprises a transmission shaft 432a and an eccentric sleeve 436, the eccentric sleeve 436 is provided with an eccentric hole 4361 which is eccentric to the rotating shaft hole, one end of the transmission shaft 432a is in transmission connection with the transmission wheel 432, and the other end of the transmission shaft 432a is arranged in 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 bearing seat 1a; the eccentric sleeve 436 can rely on the rotation of the transmission wheel 432 to form an eccentric driving on the connecting rod 433, and it is not necessary to arrange an eccentric through hole on the transmission wheel 432, so as to ensure uniform stress distribution of the transmission wheel 432, and reduce the damage probability and maintenance cost of the transmission wheel 432 while driving the lifting plate 434 to move downward.

[0060] Further, the eccentric hole 4361 and the rotating shaft hole form an eccentric distance between the centers, considering the change of the outer diameter of the roller body 51 of the brush roller in different specifications, the size range of the eccentric distance in the embodiment is 3mm-12mm; in order to determine whether the preset gap s is eliminated in place, the size of the eccentric distance is equal to half of the predetermined height in the embodiment; and the predetermined angle of the synchronous rotation of the plurality of transmission wheels 432 is 180 degrees; in the initial state, the center of the rotating shaft hole is located directly above the center of the center hole 432b; when the plurality of transmission wheels 432 synchronously rotate by 180 degrees, the center of the rotating shaft hole moves to be directly below the center of the center hole 432b, and the center of the rotating shaft hole moves a distance of two times the eccentric distance in the vertical direction, which is the same as the size of the predetermined height, and also the same as the width of the preset gap s; for example, when the width of the preset gap s is 10mm and the size of the eccentric distance is 5mm, in the initial state, the center of the rotating shaft hole of the connecting rod 433 is located at the uppermost end of the center hole, and at this time, the transmission wheel 432 is controlled to rotate by 180°, so as to eliminate the preset gap s in place.

[0061] Further, the design can also ensure that the roller shaft of the lower brush roller will not be deformed. Specifically, when the preset gap s is eliminated, the bearing surface 221 of the bearing block 22 has contacted the circular boss 51 of the roller body 5, but if the eccentricity is greater than the width of the preset gap s, and the worker inadvertently exceeds the predetermined angle when rotating the control hand wheel 41, an upward force will be formed on the roller body 5, causing the roller shaft clamped in the sliding seat 14 and the fixed seat 15 to be deformed. For example, when the width of the preset gap s is 10 mm and the size of the eccentricity is also 10 mm, only 90° rotation of the entire transmission wheel 432 is needed to eliminate the preset gap s, and when the operator mistakenly exceeds 90° of the rotation angle of the transmission wheel 432, the lifting plate 434 will continue to move downward and press the bearing seat 1a, causing the roller shaft to be slightly deformed and affecting the service life of the lower brush roller. However, the eccentricity in the embodiment will not cause this situation. In the embodiment, when the preset gap s is eliminated in place, the center of the shaft hole is located at the lowermost of the center of the center hole, and when the rotation angle of the multiple transmission wheels 432 is greater than 180 degrees, the center of the shaft hole rotates around the center of the center hole 432b and approaches the initial position, and the two lifting plates 434 that have been extended downward are reset upward. Even if the rotation angle of the transmission wheel 432 is mistakenly exceeded by 180°, the bearing block 22 will not form excessive force on the roller body 5, ensuring the structural strength and service life of the lower brush roller.

[0062] Further, in order to facilitate the operator to confirm whether the preset gap s is eliminated, as shown in Figure 10 one of the transmission shafts 432a is connected with a pointer 412 exposed on the support frame 1, and the support frame 1 is provided with a scale disc 413 corresponding to the position of the pointer 412, and the scale disc 413 is uniformly provided with multiple scale values in the circumferential direction. The scale value is usually an angle value, for example, when the width of the preset gap s is 10 mm and the size of the eccentricity is 5 mm, the angle value of 0-180° can be set on the scale disc 413. After the transmission shaft 432a is rotated by a corresponding angle and stopped at a corresponding position, the scale value change range of the pointer 412 on the scale disc 413 is observed by visual observation, that is, whether the pointer 412 is rotated by 180°, to confirm whether the preset gap s between the bearing block 22 and the roller body 5 is eliminated in place.

[0063] Further, the key connection between the eccentric hole 4361 and the transmission shaft 432a and between the center hole and the transmission shaft 432a can keep the transmission wheel 432 and the eccentric sleeve fixed in the circumferential direction with the transmission shaft 432a. The key connection can be a flat key connection or a spline connection.

[0064] Further, as shown in Figure 9As shown, in ideal state, the transmission shaft 432a is always in concentric state with the eccentric hole 4361 during rotation, but due to manufacturing and installation errors, the transmission shaft 432a will produce a small relative displacement in the lateral direction with the eccentric hole 4361 during rotation, i.e. the so-called misalignment phenomenon, in order to avoid the misalignment phenomenon to generate a lateral force on the connecting rod 433 and affect the smoothness of the connecting rod 433, the rotating shaft is installed with the joint bearing 437 in the shaft hole, and the joint 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 joint bearing 437 is a spherical surface, the inner ring is sleeved on the outer wall of the eccentric sleeve 436, which allows the connecting rod 433 to swing relative to the transmission shaft 432a in the lateral direction while ensuring the smooth rotation of the transmission shaft 432a in the circumferential direction, and avoids the connecting rod 433 from being subjected to excessive lateral force.

[0065] Further, the shaft hole of the connecting rod 433 is provided with end covers for sealing the shaft hole; the end covers can ensure that the parts 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, the outer wall of the eccentric sleeve 436 is provided with two stop ring grooves 4362 corresponding to the positions of the two ends of the joint bearing 437, and the stop ring grooves 4362 are provided with stop rings, and the two stop rings are respectively pressed by the two end covers to limit the axial movement of the joint bearing 437.

[0066] Further, the position of the eccentric sleeve 436 where the joint bearing 437 is arranged is also provided with an annular groove 4363, the annular groove 4363 can accommodate lubricant to make the rotation of the transmission shaft 432a more smooth, and can also serve as an installation mark to make the joint bearing 437 quickly installed in place.

[0067] The above describes the present application and its embodiments in a schematic manner, and the description is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above description, without departing from the creative purpose of the present application, similar structural modes and embodiments can be designed without creativity, which should all belong to the protection scope of the present application.

Claims

1. A carrier roller mechanism for underbrush roller replacement, characterized by, The application relates to a lower brush roller supporting device, which comprises a rack (1), two roller holders (2) symmetrically connected to the rack (1) through sliding, and two supporting parts (24) oppositely arranged on each roller holder (2) and extending downwards, wherein the two supporting parts (24) are provided with an avoiding groove (241) with an open lower end and a supporting block (22) arranged on the inner side of the supporting part (24). The two roller holders (2) are away from each other so that the positions of the two avoiding grooves (241) correspond to the roller shafts at the two ends of the corresponding lower brush roller, then the two roller holders (2) are close to each other, and the two supporting assemblies are moved to the predetermined positions to support the roller body (5) of the lower brush roller.

2. A carrier roller mechanism for underbrush roller replacement according to claim 1, characterized in that: The two roller holders (2) are connected through a telescopic driving element which can drive the two roller holders to be close to or away from each other.

3. A carrier roller mechanism for underbrush roller replacement according to claim 2, wherein: The roller holder (2) comprises a transverse plate (25) connected to the lower end of the rack (1) through sliding, the two supporting parts (24) are connected to the lower end of the transverse plate (25), and a vertical plate (26) is arranged between the transverse plate (25) and each supporting part (24).

4. A carrier roller mechanism for underbrush roller replacement according to claim 3, wherein: The lower end of the transverse plate (25) is provided with a support, the middle part of the lower end of the support is concave inward, thereby forming the two supporting parts (24) and the avoiding groove (241) between the two supporting parts (24).

5. A carrier roller mechanism for underbrush roller replacement according to claim 4, wherein: The support comprises at least two vertically spaced vertical plates (243), the middle part of the lower end of each vertical plate (243) is concave inward, thereby forming the two supporting parts (24) and the avoiding groove (241) between the two supporting parts (24); a connecting plate (244) is fixedly arranged between every two adjacent vertical plates (243), and the connecting plate (244) and the two vertical plates (243) form the hollow structure of the support.

6. A carrier roller mechanism for underbrush roller replacement according to claim 1, wherein: The supporting block (22) is provided with an outwardly open supporting groove, the supporting groove comprises 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 assemblies are moved to the predetermined positions, 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 carrier roller mechanism for underbrush roller replacement according to claim 6, wherein: The supporting surface (221) is an arc surface matched with the roller body (5) of the corresponding lower brush roller.

8. A carrier roller mechanism for underbrush roller replacement according to claim 6, wherein: The inner side of the supporting part (24) is provided with an abutting plate for contacting the end surface of the roller body (5) of the lower brush roller, the abutting plate is provided with an abutting surface (242), and the abutting surface (242) and the limiting surface (222) are in the same vertical plane.

9. A carrier roller mechanism for underbrush roller replacement according to claim 3, wherein: The telescopic driving element is a driving oil cylinder (21), the driving oil cylinder (21) comprises a cylinder body connected to the two roller holders (2) respectively and a telescopic rod movably arranged in the cylinder body.

10. A carrier roller mechanism for underbrush roller replacement according to claim 8, wherein: Two driving oil cylinders (21) are arranged between the two roller holders (2), and the piston rod and the cylinder body of each driving oil cylinder (21) are hingedly connected to every two vertically opposite vertical plates (26) respectively.

11. A carrier roller mechanism for underbrush roller replacement according to claim 2, wherein: The two roller holders (2) are connected through the telescopic driving element and can synchronously move in the left-right direction; one of the roller holders (2) is provided with a pushing oil cylinder (3) for acting on the fixed seat (15) and driving the two roller holders (2) to synchronously move away from the fixed seat (15).

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