Shaft roller fast-descending structure

Abstract

The utility model provides a shaft roller quick drop structure, which comprises a shaft roller and two height adjusting mechanisms oppositely arranged along the extension direction of the shaft roller, each height adjusting mechanism comprises a gland seat, a bearing seat, an eccentric sleeve and an adjusting wheel, the eccentric sleeve is provided with an eccentric hole, the end part of the shaft roller is rotatably connected in the eccentric hole, and the adjusting wheel is arranged on the bearing seat. The eccentric sleeve is rotatably connected to the interior of the bearing seat, the gland seat is arranged on the axial outer side of the eccentric sleeve, the adjusting wheel is rotatably connected to the gland seat and arranged on the inner side of the gland seat, the adjusting wheel is in transmission connection with the eccentric sleeve, and when the adjusting wheel rotates to drive the eccentric sleeve to rotate until the eccentric hole is located at the highest point, the shaft roller is in a working state; when the adjusting wheel rotates to drive the eccentric sleeve to rotate to the lowest point of the eccentric hole, the shaft roller is in a to-be-repaired state. Therefore, the height position of the shaft roller can be quickly adjusted, the faulted shaft roller is temporarily prevented from being in contact with the plate blank, the scratching risk is relieved, the processing time is obviously shortened, shutdown is not needed, and therefore the production rhythm is kept, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft roller maintenance, in particular to a shaft roller quick-drop structure. Background Art

[0002] The output roller is usually installed behind the finishing F7 stand to transport the strip from the finishing F7 stand to the down coiler, while the output roller is adjacent to the rolling mill. When the strip leaves the last stand, it transports the strip from the roller under the measuring room to the roller in the layer cooling area. The roller in the cold area usually uses internal cooling rollers to reduce water mist.

[0003] The existing technology consists of 200 to 300 output shaft rollers and internal cooling shaft rollers in the roller area of ​​steel rolling transportation. When any shaft roller is stuck, scratches will occur, which will have a great impact on product quality. The surrounding connected equipment is numerous and compact in structure, and the disassembly and replacement cycle is at least half an hour. This will affect the continuous casting process in the normal production line of thin slab continuous casting and rolling, delaying production.

[0004] In view of this, it is necessary to propose a shaft roller rapid drop structure to solve or at least alleviate the above defects. Utility Model Content

[0005] The main purpose of the utility model is to provide a shaft roller quick-drop structure to solve the problem in the prior art that the stuck shaft roller cannot be handled in time, which affects product quality and is troublesome to replace.

[0006] To achieve the above-mentioned purpose, the utility model provides a shaft roller rapid drop structure, comprising a shaft roller and two height adjustment mechanisms arranged opposite to each other along the extension direction of the shaft roller, wherein the two ends of the shaft roller are rotatably connected to the two height adjustment mechanisms respectively; wherein:

[0007] Each of the height adjustment mechanisms comprises a gland seat, a bearing seat, an eccentric sleeve and an adjustment wheel, wherein the eccentric sleeve has an eccentric hole, the end of the shaft roller is rotatably connected to the eccentric hole, and the eccentric sleeve is rotatably connected to the bearing seat;

[0008] The gland seat is arranged on the axial outer side of the eccentric sleeve, the adjusting wheel is rotatably connected to the gland seat and arranged on the inner side of the gland seat, and the adjusting wheel is drivingly connected to the eccentric sleeve;

[0009] When the adjusting wheel rotates to drive the eccentric sleeve to rotate until the eccentric hole is at the highest point, the shaft roller is in a working state; when the adjusting wheel rotates to drive the eccentric sleeve to rotate until the eccentric hole is at the lowest point, the shaft roller is in a state to be repaired.

[0010] Preferably, the adjusting wheel has a height adjusting shaft extending axially, and a first mounting hole is provided on the pressure cover seat, wherein the height adjusting shaft is rotatably connected to the first mounting hole, and both ends of the height adjusting shaft extend out of the first mounting hole.

[0011] Preferably, an outer gear ring is formed on the eccentric sleeve along the circumferential direction, a transmission gear is sleeved on the height adjustment shaft of the adjusting wheel, the transmission gear is arranged on the inner side of the adjusting wheel, and the transmission gear is meshed with the outer gear ring.

[0012] Preferably, each of the height adjustment mechanisms also includes a locking wheel, which is arranged on the inner side of the pressure cover seat, and the locking wheel has a locking adjustment shaft extending axially, and a second mounting hole is opened on the pressure cover seat, and the second mounting hole is arranged directly below the first mounting hole, wherein the locking adjustment shaft is rotatably connected to the second mounting hole, and both ends of the locking adjustment shaft extend out of the second mounting hole; the locking wheel is abutted against the bottom of the adjusting wheel to limit the rotation of the adjusting wheel.

[0013] Preferably, the adjusting wheel has a first arc-shaped notch corresponding to the locking wheel, and the locking wheel has a second arc-shaped notch corresponding to the adjusting wheel;

[0014] Wherein, when the first arc-shaped notch and the second arc-shaped notch are both opened downward, the locking wheel rotates into the first arc-shaped notch, and the adjusting wheel is in a locked state.

[0015] Preferably, each of the height adjustment mechanisms also includes a limiting plate, a first groove extending vertically is formed at the outer end of the height adjustment shaft of the adjusting wheel, a second groove extending vertically is formed at the outer end of the locking adjustment shaft of the locking wheel, and both ends of the limiting plate are respectively arranged in the first groove and the second groove.

[0016] Preferably, the first groove and the second groove are both extended in the axial direction, and one end of the limiting piece is rotatably connected to the first groove through a pin shaft.

[0017] Preferably, each of the height adjustment mechanisms further comprises a pressure plate, the pressure plate having a mounting through hole through which the shaft roller passes, the pressure plate being sleeved on the shaft roller, and the bearing seat being arranged between the pressure cover seat and the pressure plate.

[0018] Preferably, the outer ends of the height adjustment shaft and the locking adjustment shaft are both in the shape of a hexagonal prism.

[0019] Preferably, the mounting through hole of the pressure plate is larger than the outer diameter of the end of the shaft roller.

[0020] Compared with the prior art, the utility model provides the following beneficial effects:

[0021] The utility model provides a shaft roller rapid lowering structure, comprising a shaft roller and two height adjustment mechanisms relatively arranged along the extension direction of the shaft roller, the two ends of the shaft roller are rotatably connected to the two height adjustment mechanisms respectively, each height adjustment mechanism comprises a gland seat, a bearing seat, an eccentric sleeve and an adjusting wheel, the eccentric sleeve has an eccentric hole, the end of the shaft roller is rotatably connected to the eccentric hole, the eccentric sleeve is rotatably connected to the bearing seat, the gland seat is arranged on the axial outer side of the eccentric sleeve, the adjusting wheel is rotatably connected to the gland seat and arranged on the inner side of the gland seat, and the adjusting wheel and the eccentric sleeve are transmission connected, wherein, when the adjusting wheel rotates to drive the eccentric sleeve to rotate until the eccentric hole is at the highest point, the shaft roller is in a working state; when the adjusting wheel rotates to drive the eccentric sleeve to rotate until the eccentric hole is at the lowest point, the shaft roller is in a state to be repaired. In this way, the height position of the shaft roller can be quickly adjusted by adjusting the position of the eccentric hole in the eccentric sleeve, so that the faulty shaft roller is temporarily no longer in contact with the slab, eliminating the risk of scratching. For most similar faulty shaft rollers, only interval processing is required, and the processing time is significantly shortened. There is no need to stop production, and the production rhythm can be maintained, thereby ensuring production efficiency. For the remaining shaft rollers that have not yet been repaired, they can be uniformly repaired after the production is stopped, saving time and effort and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional schematic diagram of the height adjustment mechanism after the bearing seat is removed in one embodiment of the utility model;

[0024] Figure 2 It is a three-dimensional schematic diagram of another perspective of the height adjustment mechanism after the bearing seat is removed in one embodiment of the utility model;

[0025] Figure 3 A three-dimensional schematic diagram of the working state of the overall structure in one embodiment of the utility model;

[0026] Figure 4 A side view schematic diagram of the working state of the overall structure in one embodiment of the utility model;

[0027] Figure 5 A cross-sectional schematic diagram of the working state of the overall structure in one embodiment of the utility model;

[0028] Figure 6 It is a three-dimensional schematic diagram of the overall structure in an embodiment of the utility model in a state to be repaired;

[0029] Figure 7 It is a cross-sectional schematic diagram of the overall structure in a state to be repaired in one embodiment of the utility model;

[0030] Figure 8 It is a three-dimensional schematic diagram of a gland seat in one embodiment of the utility model.

[0031] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0032] Description of Figure Numbers:

[0033] 10. Height adjustment mechanism; 110. Pressure cover seat; 120. Bearing seat; 130. Eccentric sleeve; 131. Eccentric hole; 132. Outer gear ring; 140. Adjusting wheel; 141. Height adjustment shaft; 142. Transmission gear; 143. First arc-shaped notch; 144. First groove; 145. Pin; 150. Locking wheel; 151. Locking adjustment shaft; 152. Second arc-shaped notch; 153. Second groove; 160. Limiting piece; 170. Pressure plate; 20. Shaft roller. DETAILED DESCRIPTION

[0034] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0038] Please see attached Figure 1-8 In one embodiment of the utility model, a shaft roller 20 quick-drop structure is provided, comprising a shaft roller 20 and two height adjustment mechanisms 10 relatively arranged along the extension direction of the shaft roller 20, and the two ends of the shaft roller 20 are rotatably connected to the two height adjustment mechanisms 10 respectively. First of all, it should be noted that, unlike the prior art, in the roller area of ​​steel rolling transportation, which is composed of 200 to 300 output shaft rollers 20 and internal cooling shaft rollers 20, when any shaft roller 20 is stuck, scratches will occur, which will have a great impact on product quality, and the surrounding connected equipment is numerous and compact in structure, and the disassembly and replacement cycle is at least half an hour, which will affect the continuous casting process in the normal production line of thin slab continuous casting and rolling, and delay production. The present application solves the above-mentioned defects in the prior art by setting up a shaft roller 20 quick-drop structure. The details are as follows:

[0039] Each of the height adjustment mechanisms 10 includes a gland seat 110, a bearing seat 120, an eccentric sleeve 130 and an adjusting wheel 140, wherein the eccentric sleeve 130 has an eccentric hole 131, the end of the shaft roller 20 is rotatably connected to the eccentric hole 131, and the eccentric sleeve 130 is rotatably connected to the bearing seat 120; the gland seat 110 is arranged on the axial outer side of the eccentric sleeve 130, the adjusting wheel 140 is rotatably connected to the gland seat 110 and arranged on the inner side of the gland seat 110, and the adjusting wheel 140 and the eccentric sleeve 130 are transmission connected; wherein, when the adjusting wheel 140 rotates to drive the eccentric sleeve 130 to rotate until the eccentric hole 131 is located at the highest point, the shaft roller 20 is in a working state; when the adjusting wheel 140 rotates to drive the eccentric sleeve 130 to rotate until the eccentric hole 131 is located at the lowest point, the shaft roller 20 is in a state to be repaired.

[0040] Specifically, the shaft roller 20 rapid descent structure in the present application includes a shaft roller 20 and two height adjustment mechanisms 10. The shaft roller 20 is a commonly used conveying roller in a slab production line, and the height adjustment mechanism 10 is used to temporarily adjust the height position of the shaft roller 20 to avoid friction damage between the stuck shaft roller 20 and the slab. At the same time, in order to ensure that the shaft roller 20 can operate normally, the two height adjustment mechanisms 10 are relatively arranged on both sides of the shaft roller 20 along the extension direction of the shaft roller 20, so that the two ends of the shaft roller 20 are respectively rotatably connected to the two height adjustment mechanisms 10.

[0041] Wherein, each of the height adjustment mechanisms 10 includes a gland seat 110, a bearing seat 120, an eccentric sleeve 130 and an adjusting wheel 140. The eccentric sleeve 130 is used for connecting the shaft roller 20 and has an eccentric hole 131. The eccentric hole 131 is eccentrically arranged on the eccentric sleeve 130, so that the eccentric hole 131 can rotate to different eccentric positions around the axis during rotation, and the end of the shaft roller 20 can be rotatably connected to the eccentric hole 131 to ensure the normal operation of the output roller itself, and then the shaft roller 20 can be synchronously adjusted to different height positions by adjusting the eccentric hole 131 to different positions; the bearing seat 120 is used to support the eccentric sleeve 130 to ensure that the eccentric sleeve 130 can rotate normally and limit the eccentric sleeve 130. It is rotatably connected to the bearing seat 120; the adjusting wheel 140 is used to adjust the rotation of the eccentric sleeve 130. The gland seat 110 is arranged on the axial outer side of the eccentric sleeve 130 to limit the axial displacement of the entire shaft roller 20. The outer side here refers to the side away from the shaft roller 20. The gland seat 110 is also used for the installation of the adjusting wheel 140, so that the adjusting wheel 140 can be rotatably connected to the gland seat 110 and arranged on the inner side of the gland seat 110, so as to facilitate the eccentric sleeve 130 and the adjusting wheel 140 which are also located on the inner side to be connected in transmission, so as to drive the eccentric sleeve 130 to rotate by controlling the adjusting wheel 140 to realize the change of the position of the eccentric hole 131 and the synchronous change of the height position of the shaft roller 20.

[0042] Among them, during the initial installation, the technician controls the adjusting wheel 140 to rotate to drive the eccentric sleeve 130 to rotate, so that the eccentric hole 131 is located at the upper dead center (i.e., the highest position). At this time, the shaft roller 20 and the other conveying rollers are located on the same plane and operate normally. The shaft roller 20 is in working condition and is used normally in the production process. When the shaft roller 20 is stuck and fails, the technician immediately controls the adjusting wheel 140 to rotate to drive the eccentric sleeve 130 to rotate, so that the eccentric hole 131 is offset from the upper dead center to the lower dead center (i.e., the lowest position). At this time, the shaft roller 20 installed in the eccentric hole 131 is located at the lowest point together, and the shaft roller 20 is in a state of waiting for repair and will not contact the slab, thereby avoiding friction and scratches. The staff can deal with the faulty shaft roller 20 in time without stopping work, thereby maintaining the production rhythm.

[0043] As a preferred embodiment of the utility model, the adjusting wheel 140 has a height adjustment shaft 141 extending axially, and a first mounting hole is opened on the pressure cover seat 110, wherein the height adjustment shaft 141 is rotatably connected to the first mounting hole, and both ends of the height adjustment shaft 141 extend out of the first mounting hole.

[0044] It should be noted that the height adjustment shaft 141 facilitates the installation of the adjusting wheel 140 on the pressure cover seat 110, and a first mounting hole (not shown) is opened on the pressure cover seat 110 for the height adjustment shaft 141 to pass through and be installed. Furthermore, both ends of the height adjustment shaft 141 extend out of the first mounting hole, and the protruding part on the outside can be convenient for technicians to operate, while the protruding part on the inside is convenient for the setting of the adjusting wheel 140 itself.

[0045] As a preferred embodiment of the utility model, an outer gear ring 132 is formed on the eccentric sleeve 130 along the circumferential direction, and a transmission gear 142 is sleeved on the height adjustment shaft 141 of the adjusting wheel 140. The transmission gear 142 is arranged on the inner side of the adjusting wheel 140, and the transmission gear 142 is meshed with the outer gear ring 132.

[0046] It should be noted that the outer gear ring 132 is used for transmission connection with the adjusting wheel 140, so the transmission gear 142 can be added to the adjusting wheel 140, and the transmission gear 142 is sleeved on the height adjustment shaft 141 of the adjusting wheel 140 and synchronously meshed with the outer gear ring 132. In this way, when the adjusting wheel 140 is controlled to rotate, the transmission gear 142 also rotates, and drives the outer gear ring 132 to rotate to drive the eccentric sleeve 130 to rotate, thereby achieving the purpose of height adjustment.

[0047] As a preferred embodiment of the utility model, each of the height adjustment mechanisms 10 also includes a locking wheel 150, which is arranged on the inner side of the pressure cover seat 110, and the locking wheel 150 has a locking adjustment shaft 151 extending axially, and a second mounting hole is opened on the pressure cover seat 110, and the second mounting hole is arranged directly below the first mounting hole, wherein the locking adjustment shaft 151 is rotatably connected to the second mounting hole, and both ends of the locking adjustment shaft 151 extend out of the second mounting hole; the locking wheel 150 is abutted against the bottom of the adjusting wheel 140 to limit the rotation of the adjusting wheel 140.

[0048] It is worth mentioning that the locking wheel 150 is used to limit the rotation of the adjusting wheel 140 so as to maintain stability in the working state or the state to be repaired. It is arranged on the inner side of the pressure cover seat 110 to ensure that it is located on the same side as the adjusting wheel 140, thereby ensuring the stop and limit function; similar to the adjusting wheel 140, the locking wheel 150 also has a locking adjustment shaft 151 extending along the axial direction, so as to facilitate the installation of the locking wheel 150 on the pressure cover seat 110, and a second mounting hole is opened on the pressure cover seat 110 for the locking adjustment shaft 151 to pass through and install, and both ends of the locking adjustment shaft 151 are extended out of the second mounting hole (not shown in the figure) so that the end located on the outside is convenient for the technician to operate; when the technician operates the locking wheel 150 to rotate so that the locking wheel 150 is abutted against the bottom of the adjusting wheel 140, the locking purpose is achieved, thereby limiting the rotation of the adjusting wheel 140.

[0049] As a preferred embodiment of the present invention, the adjusting wheel 140 has a first arc-shaped notch 143 corresponding to the locking wheel 150, and the locking wheel 150 has a second arc-shaped notch 152 corresponding to the adjusting wheel 140; wherein, when the first arc-shaped notch 143 and the second arc-shaped notch 152 are both opened downward, the locking wheel 150 rotates into the first arc-shaped notch 143, and the adjusting wheel 140 is in a locked state.

[0050] It is worth noting that the first arc-shaped notch 143 is used for placing the locking wheel 150. When the locking wheel 150 is placed in the first arc-shaped notch 143 and fixed, the locking wheel 150 and the adjusting wheel 140 form an interlocking mechanism. Therefore, the first arc-shaped notch 143 needs to be set corresponding to the locking wheel 150. The corresponding setting here means that the curvature of the first arc-shaped notch 143 is consistent with that of the locking wheel 150, so that the locking wheel 150 can be controlled to rotate along the first arc-shaped notch 143 when the locking state needs to be unlocked; it can be understood that the second arc-shaped notch 152 is used to allow the adjusting wheel 140 to rotate smoothly in the second arc-shaped notch 152 when the locking state is unlocked for adjustment. Therefore, the second arc-shaped notch 152 needs to be set corresponding to the adjusting wheel 140. The corresponding setting here means that the first arc-shaped notch 143 has the same curvature as the locking wheel 150, so that the locking wheel 150 can be controlled to rotate along the first arc-shaped notch 143 when the locking state needs to be unlocked. The curvature of the second arc-shaped notch 152 is consistent with that of the adjusting wheel 140; wherein, when the adjusting wheel 140 needs to be locked, the adjusting wheel 140 and the locking wheel 150 are rotated so that the first arc-shaped notch 143 and the second arc-shaped notch 152 are both opened downward, and at this time, the locking wheel 150 is rotated into the first arc-shaped notch 143 and fixes the locking wheel 150, while the first adjusting wheel 140 cannot be rotated due to the locking limit caused by the locking wheel 150 being located in the first arc-shaped notch 143, and the adjusting wheel 140 is in a locked state; and when the locking state needs to be unlocked for adjustment, the locking wheel 150 is first rotated so that the second arc-shaped notch 152 of the locking wheel 150 is opened upward, and at this time, the adjusting wheel 140 can smoothly rotate in the second arc-shaped notch 152 along the circumferential direction, thereby achieving the purpose of adjustment.

[0051] Furthermore, each of the height adjustment mechanisms 10 also includes a limiting plate 160, a first groove 144 is formed at the outer end of the height adjustment shaft 141 of the adjusting wheel 140 and is vertically penetrated, and a second groove 153 is formed at the outer end of the locking adjustment shaft 151 of the locking wheel 150 and is vertically penetrated, and both ends of the limiting plate 160 are respectively arranged in the first groove 144 and the second groove 153.

[0052] It should be noted that the limiting piece 160 is used to simultaneously fix the adjusting wheel 140 and the locking wheel 150 to each other to achieve an interlocking effect. When in a locked state, the first arc-shaped notch 143 and the second arc-shaped notch 152 are both opened downward. At this time, the first groove 144 formed at the outer end of the height adjustment shaft 141 of the adjusting wheel 140 penetrates vertically, and the second groove 153 formed at the outer end of the locking adjustment shaft 151 of the locking wheel 150 also penetrates vertically, and the two ends of the limiting piece 160 are respectively arranged in the first groove 144 and the second groove 153. The purpose of limiting rotation is achieved by connecting the adjusting wheel 140 and the locking wheel 150. When further adjustment is needed, the limiting piece 160 is taken out or adjusted, and the limit can be released by canceling the connection at the two ends.

[0053] Furthermore, the first groove 144 and the second groove 153 are both extended in the axial direction, and one end of the limiting piece 160 is rotatably connected to the first groove 144 through a pin shaft 145 .

[0054] It should be understood that one end of the limiting plate 160 is rotatably connected to the first groove 144 through a pin shaft 145, so that the connection between the adjusting wheel 140 and the locking wheel 150 can be canceled by rotating one end of the limiting plate 160, and the first groove 144 and the second groove 153 are both axially extended to ensure the rotation range of the limiting plate 160; when the locking state needs to be unlocked, the limiting plate 160 is pushed to rotate around the pin shaft 145 in the first groove 144 along the vertical plane of the height adjustment axis 141, so that the other end of the limiting plate 160 is not in the second groove 153, and the locking wheel 150 can be adjusted to rotate.

[0055] Furthermore, each of the height adjustment mechanisms 10 also includes a pressure plate 170 , which has a mounting through hole through which the shaft roller 20 passes, and the pressure plate 170 is sleeved on the shaft roller 20 , and the bearing seat 120 is arranged between the pressure cover seat 110 and the pressure plate 170 .

[0056] It should be noted that the pressure plate 170 is used to further stabilize the shaft roller 20 to prevent the shaft roller 20 from being displaced inward along the circumferential direction. Therefore, the pressure plate 170 is also sleeved on the shaft roller 20 so that the bearing seat 120 is arranged between the pressure cover seat 110 and the pressure plate 170.

[0057] Furthermore, the outer ends of the height adjustment shaft 141 and the locking adjustment shaft 151 are both in the shape of a hexagonal prism.

[0058] It should be noted that when the outer ends of the height adjustment shaft 141 and the locking adjustment shaft 151 are both in the shape of a hexagonal prism, a sleeve in the shape of a hexagonal prism can be used during operation, which saves effort and is convenient to adjust; and when the sleeve is inserted into the end of the locking adjustment shaft 151, the sleeve will exert a thrust on the limit plate 160, causing the limit plate 160 to rotate around the pin shaft 145. At this time, the locking adjustment shaft 151 will not be restricted in displacement by the limit plate 160 and can rotate; similarly, when the sleeve is inserted into the end of the height adjustment shaft 141, the limit plate 160 can be pushed to rotate to disengage from the limiting and anti-rotation effect.

[0059] Furthermore, the mounting through hole of the pressure plate 170 is larger than the outer diameter of the end of the shaft roller 20 .

[0060] It is understandable that, considering that the shaft roller 20 connected to the eccentric sleeve 130 will make eccentric displacement around the axis during adjustment, the mounting hole of the pressure plate 170 needs to be set larger to ensure sufficient eccentric space to avoid limiting the displacement of the shaft roller 20 during eccentric adjustment.

[0061] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A shaft roller speed drop structure, characterized in that: It comprises an axis roller and two height adjustment mechanisms arranged opposite to each other along the extension direction of the axis roller, and the two ends of the axis roller are rotatably connected to the two height adjustment mechanisms respectively; wherein, Each of the height adjustment mechanisms comprises a gland seat, a bearing seat, an eccentric sleeve and an adjustment wheel, wherein the eccentric sleeve has an eccentric hole, the end of the shaft roller is rotatably connected to the eccentric hole, and the eccentric sleeve is rotatably connected to the bearing seat; The gland seat is arranged on the axial outer side of the eccentric sleeve, the adjusting wheel is rotatably connected to the gland seat and arranged on the inner side of the gland seat, and the adjusting wheel is drivingly connected to the eccentric sleeve; When the adjusting wheel rotates to drive the eccentric sleeve to rotate until the eccentric hole is at the highest point, the shaft roller is in a working state; when the adjusting wheel rotates to drive the eccentric sleeve to rotate until the eccentric hole is at the lowest point, the shaft roller is in a state to be repaired.

2. The shaft-roller rapid descent structure according to claim 1, characterized in that: The adjusting wheel has a height adjusting shaft extending along the axial direction, and a first mounting hole is opened on the pressure cover seat, wherein the height adjusting shaft is rotatably connected to the first mounting hole, and both ends of the height adjusting shaft extend out of the first mounting hole.

3. The shaft-roller rapid descent structure according to claim 2, characterized in that: An outer gear ring is formed on the eccentric sleeve along the circumferential direction, and a transmission gear is sleeved on the height adjustment shaft of the adjustment wheel. The transmission gear is arranged on the inner side of the adjustment wheel, and the transmission gear is meshed with the outer gear ring.

4. The shaft-roller rapid descent structure according to claim 2, characterized in that: Each of the height adjustment mechanisms also includes a locking wheel, which is arranged on the inner side of the pressure cover seat, and the locking wheel has a locking adjustment shaft extending axially. A second mounting hole is opened on the pressure cover seat, and the second mounting hole is arranged directly below the first mounting hole, wherein the locking adjustment shaft is rotatably connected to the second mounting hole, and both ends of the locking adjustment shaft extend out of the second mounting hole; the locking wheel is abutted against the bottom of the adjusting wheel to limit the rotation of the adjusting wheel.

5. The shaft-roller rapid descent structure according to claim 4, characterized in that: The adjusting wheel has a first arc-shaped notch corresponding to the locking wheel, and the locking wheel has a second arc-shaped notch corresponding to the adjusting wheel; Wherein, when the first arc-shaped notch and the second arc-shaped notch are both opened downward, the locking wheel rotates into the first arc-shaped notch, and the adjusting wheel is in a locked state.

6. The shaft-roller rapid descent structure according to claim 5, characterized in that: Each of the height adjustment mechanisms also includes a limiting plate, a first groove extending vertically is formed at the outer end of the height adjustment shaft of the adjusting wheel, a second groove extending vertically is formed at the outer end of the locking adjustment shaft of the locking wheel, and both ends of the limiting plate are respectively arranged in the first groove and the second groove.

7. The shaft-roller rapid descent structure according to claim 6, characterized in that: The first groove and the second groove are both extended in the axial direction, and one end of the limiting piece is rotatably connected to the first groove through a pin shaft.

8. The shaft-roller rapid descent structure according to claim 1, characterized in that: Each of the height adjustment mechanisms also includes a pressure plate, which has a mounting through hole through which the shaft roller passes, the pressure plate is sleeved on the shaft roller, and the bearing seat is arranged between the pressure cover seat and the pressure plate.

9. The shaft-roller rapid descent structure according to claim 4, characterized in that: The outer ends of the height adjustment shaft and the locking adjustment shaft are both in the shape of hexagonal prisms.

10. The shaft-roller rapid descent structure according to claim 8, characterized in that: The mounting through hole of the pressure plate is larger than the outer diameter of the end of the shaft roller.

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