Carrier roller frame capable of replacing carrier rollers in situ without shutdown

Abstract

The invention belongs to the technical field of coal mine belt conveyors, and particularly relates to a carrier roller frame capable of replacing carrier rollers in situ without shutdown, which comprises three frames connected in sequence, roller end limiting assemblies are arranged at the two ends of each frame, and a longitudinal shaft is rotationally connected between the front side ends of the roller end limiting assemblies on the two sides of each frame. The roller end limiting assembly comprises a side baffle, a lower supporting plate and an upper end plate, the end of the longitudinal shaft is rotationally connected to the front end of the lower supporting plate, the bottom end of the side baffle is rotationally connected to the frame, the upper end plate is rotationally installed on the frame, the upper end plate and the carrier roller are in a coaxial state, and the lower supporting plate is fixedly arranged at the bottom of the inner side face of the upper end plate. Tooth grooves which are distributed at equal intervals are formed in the circumferential face of the rear side of the upper end plate, racks which are longitudinally distributed and meshed with the tooth grooves are arranged on the rear side face of the upper end plate, and a pressing plate is arranged on the racks. The device has the advantage that the carrier rollers can be quickly, simply and conveniently replaced one by one in situ under the non-stop action.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine belt conveyors; in particular, the invention relates to a roller support frame capable of replacing rollers in situ without stopping the machine. Background Art

[0002] At present, replacing rollers of fixed belt conveyors in coal mines is a very time-consuming and laborious task. It is necessary to overcome the tension of the conveyor belt, lift the conveyor belt, remove the damaged rollers and then replace them. The key point is to overcome the tension of the conveyor belt and lift the conveyor belt with the help of a crowbar or a homemade jack tool. When the tension of the conveyor belt is too large, it is even necessary to use the anchor cable on the top of the tunnel and use a manual or electric hoist to pull up the conveyor belt.

[0003] In comparison, the hanging roller group used in the open-pit coal mine belt conveyor can easily replace the rollers, and the roller group also has greater flexibility. However, when replacing the rollers, it is still necessary to plug and unplug various connecting pins. Summary of the invention

[0004] In view of this, the present invention provides a roller stand capable of replacing rollers in situ without stopping the machine, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0005] In order to achieve the aforementioned objectives, the present invention provides a roller frame that can replace rollers in situ without stopping the machine, comprising three frames connected in sequence, both ends of the frames are provided with roller end limit assemblies, and the front side ends between the roller end limit assemblies on both sides of the frames are rotatably connected with a longitudinal axis, the cavity of the frame forms a channel for the roller to downwardly detach from the frame, wherein the roller end limit assembly comprises a side baffle, a lower support plate and an upper end plate, the end of the longitudinal axis is rotatably connected to the front end of the lower support plate, the lower support plate is supported at the bottom of the roller end shaft, and the bottom end of the side baffle is rotatable The side baffle is connected to the frame, and is supported on the rear side of the roller end shaft, and the longitudinal axis is supported on the front side of the roller shaft, and the upper end plate is rotatably mounted on the frame, and is coaxial with the roller, and the lower support plate is fixedly arranged on the bottom of the inner side surface of the upper end plate, and the rear circumferential surface of the upper end plate is provided with equidistantly distributed tooth grooves, and the rear side surface of the upper end plate is provided with a longitudinally distributed rack meshing with the tooth grooves, and a pressure plate is arranged on the rack, and the pressure plate is arranged so that when the rack is lowered, the top end of the side baffle is driven to swing backward to a state where the height is less than the roller end shaft.

[0006] In the aforementioned roller stand capable of replacing rollers in situ without stopping the machine, optionally, when the rack is lowered to the lowest position, the longitudinal axis rotates to between the top of the roller and the conveyor belt.

[0007] In a roller rack as described above that can replace rollers in situ without stopping the machine, optionally, a force rod is fixedly provided on the top of the rear side of the side baffle, the lower surface of the pressure plate is an inclined surface with the rear end tilted upward, and the lower surface of the pressure plate is in contact with the top of the force rod.

[0008] In a roller frame as described above that can replace rollers in situ without stopping the machine, optionally, a lifting frame is fixedly installed on the rear side of the rack, the pressure plate is fixedly installed on the top of the rear side of the lifting frame, a through groove is provided in the lifting frame, and the through groove is sleeved on the rear side of the side baffle, a lower end plate is fixedly connected to the front side of the outer side of the side baffle, the lower end plate is rotatably installed on the frame, and the lower end plate is located directly below the upper end plate.

[0009] In a roller frame as described above that can replace rollers in situ without stopping the machine, optionally, a rear extension plate is vertically installed at the bottom of the rear side surface of the side baffle, and the upper surface of the rear extension plate is spaced apart from the lower surface of the lifting frame. When the lifting frame is arranged so that the lower surface contacts the top of the rear extension plate, the side baffle can rotate rearward, and the side baffle is an elastic telescopic rod, and the force-bearing rod is fixedly arranged on the protruding end of the side baffle.

[0010] In a roller frame as described above that can replace rollers in situ without stopping the machine, optionally, a support plate is fixedly provided on the frame, and a guide groove with an opening facing downward and an "L"-shaped cross-section is provided at the bottom of the inner side surface of the support plate, and the guide groove includes an arc-shaped portion and a horizontal portion distributed front to back, and when the lifting frame descends to the point where its lower surface contacts the top of the rear extension plate, the force-bearing rod descends to a state where its height is less than the height of the front end notch of the arc-shaped portion.

[0011] In a roller frame as described above that can replace rollers in situ without stopping the machine, optionally, a drive plate is fixedly provided on the rear side of the lifting frame, an elastic telescopic support rod is provided at the bottom of the drive plate, and the elastic telescopic support rod is installed on the frame, and the rear end face of the drive plate is an inclined surface with the top end tilted forward, and when the drive plate descends to the lowest position, its upper surface is flush with the frame.

[0012] In a roller frame as described above that can replace rollers in situ without stopping the machine, optionally, the upper surface of the driving plate is arranged so that the front height is smaller than the rear height to form a step groove, and when the roller end shaft is located in the step groove, the driving rack is in a state of being lowered by half the height, and the distance between the rear end of the step groove and the center of the upper end plate is greater than or equal to twice the outer diameter of the roller.

[0013] In a roller frame as described above that can replace rollers in situ without stopping the machine, optionally, the part of the lifting frame located on the inner side of the through slot and the driving plate are both located between the outer end of the roller end shaft and the end face of the roller body, and the top of the lifting frame is open corresponding to the top of the through slot, the part of the front side of the lifting frame located on the inner side of the through slot is supported on the rear side of the thinner part of the roller end shaft, the rear side of the outer end of the roller end shaft is located in the through slot, and the top of the lower support plate is provided with a strip groove for accommodating the outer end of the roller end shaft.

[0014] In the above-mentioned roller rack capable of replacing rollers in situ without stopping the machine, optionally, a forward extension plate is vertically fixed to the bottom of the front side of the side baffle, and the distance between the forward extension plate and the center of the upper end plate is greater than or equal to twice the outer diameter of the roller.

[0015] The roller frame of the present invention can replace rollers in situ without stopping the machine. The roller end limiting assembly cooperates with the longitudinal axis and utilizes the cavity of the frame as a channel for the rollers to detach. The rollers can be replaced one by one in situ without stopping the machine. The operation is simple and easy. The new roller only needs to be placed on the roller frame at the rear side of the old roller and pushed forward. The old roller can automatically fall off and the new roller can be automatically installed and limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The disclosure of the present invention will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings: Figure 1 The figure is a schematic diagram of the roller frame capable of quickly replacing rollers in operation according to the present invention.

[0017] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 For the present invention Figure 1 Side view of.

[0019] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle.

[0020] Figure 5 The figure is a schematic diagram of the overall structure of the roller frame of the present invention that can quickly replace the rollers.

[0021] Figure 6 For the present invention Figure 5 Partial schematic diagram.

[0022] Figure 7 For the present invention Figure 5 Schematic diagram of the structure of a single frame.

[0023] Figure 8 For the present invention Figure 7 Another perspective of the picture.

[0024] Fig. 9 For the present invention Figure 8 Enlarged view of center C.

[0025] Fig.10 It is a schematic diagram of the overall coordination of the side baffle, lifting frame, front extension plate and rear extension plate of the present invention.

[0026] Figure markings: 1-frame; 2-longitudinal axis; 3-side baffle; 4-lower support plate; 5-upper end plate; 6-tooth groove; 7-rack; 8-pressure plate; 9-force rod; 10-lifting frame; 11-through groove; 12-lower end plate; 13-rear extension plate; 14-support plate; 15-guide groove; 15.1-arc-shaped part; 15.2-horizontal part; 16-driving plate; 17-support rod; 18-step groove; 19-strip groove; 20-forward extension plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 10 As shown, a typical embodiment of the present invention provides a roller frame for quickly replacing rollers, including three frames 1 connected in sequence, roller end limit assemblies are arranged at both ends of the frame 1, and a longitudinal axis 2 is rotatably connected between the front side ends of the roller end limit assemblies on both sides of the frame 1, and the cavity of the frame 1 forms a channel for the roller to downwardly detach from the frame 1, wherein the roller end limit assembly includes a side baffle plate 3, a lower support plate 4 and an upper end plate 5, the end of the longitudinal axis 2 is rotatably connected to the front end of the lower support plate 4, the lower support plate 4 is supported at the bottom of the roller end shaft, and the bottom end of the side baffle plate 3 is rotatably connected On the frame 1, the side baffle 3 is supported on the rear side of the roller end shaft, the longitudinal axis 2 is supported on the front side of the roller shaft, the upper end plate 5 is rotatably installed on the frame 1, the upper end plate 5 is coaxial with the roller, and the lower support plate 4 is fixedly arranged at the bottom of the inner side surface of the upper end plate 5, the rear circumferential surface of the upper end plate 5 is provided with equidistantly distributed tooth grooves 6, and the rear side surface of the upper end plate 5 is provided with a longitudinally distributed rack 7 meshing with the tooth grooves 6, and a pressure plate 8 is arranged on the rack 7. The pressure plate 8 is arranged so that when the rack 7 descends, the top end of the side baffle 3 is driven to swing backward to a state where the height is less than the roller end shaft.

[0029] In this embodiment, the roller is limited on the front side of the roller surface by the longitudinal axis 2, and on the rear side of the roller end shaft by the side baffle plate 3. The roller is supported by the lower support plate 4 at the bottom of the roller end shaft, and the axial limitation of the roller is achieved by the upper end plate 5 located on the outside of the roller end shaft, so that the roller can be stably installed in the frame 1.

[0030] By using the inner cavity of the frame 1 as a channel for the roller to be disengaged downward from the roller frame, the roller frame can directly replace the roller in situ. During the replacement process, it is only necessary to press down the rack 7 and use the meshing of the rack 7 and the tooth groove 6 to drive the upper end plate 5 to rotate, so that the lower support plate 4 is switched from the bottom position of the roller end shaft to the front side and vertical state. At this time, the roller end shaft can be displaced downward from between the side baffle 3 and the lower support plate 4, so that the roller in the frame 1 can be disengaged, and the old roller is removed.

[0031] In addition, the new roller directly enters between the conveyor belt and the frame 1 from the upstream side of the frame 1. At this time, the new roller is displaced on the roller frame toward the frame 1 side by utilizing the worker's thrust and the friction of the conveyor belt when it is in operation. When the rack 7 drives the upper end plate 5 to rotate through the tooth groove 6, the pressure plate 8 moves synchronously with the rack 7, and the top end of the side baffle 3 rotates backward to a state where the height is less than the roller end shaft, providing space for the new roller to enter the frame 1 from the roller frame.

[0032] When the new roller moves in the front-to-back direction to the front side of the top end of the side baffle 3, the rack 7 is reset upward. At this time, the upper end plate 5, the lower support plate 4 and the longitudinal axis 2 are all reset to ensure that the new roller can be effectively supported and limited when entering the frame 1. In this way, the roller frame can be replaced in situ without stopping the machine.

[0033] When the rack 7 drops to the lowest position, the longitudinal axis 2 rotates to between the top of the roller and the conveyor belt. When replacing the roller, when the upper end plate 5 rotates and causes the lower support plate 4 to rotate to the front side of the roller end shaft and be vertical, the longitudinal axis 2 is supported at the bottom of the conveyor belt to overcome the tension of the conveyor belt, so that the conveyor belt at the top of the frame 1 is effectively supported, providing space for the new roller to enter the frame 1.

[0034] A force-bearing rod 9 is fixedly arranged at the top of the rear side of the side baffle 3, and the lower surface of the pressure plate 8 is an inclined surface with the rear end tilted upward, and the lower surface of the pressure plate 8 contacts the top of the force-bearing rod 9. During the downward movement of the rack 7, the pressure plate 8 uses its lower surface to press the force-bearing rod 9, so that the force-bearing rod 9 is subjected to a force component toward the rear side. At this time, the force-bearing rod 9 drives the top end of the side baffle 3 to rotate toward the rear side, so that the top end of the side baffle 3 moves to a state where the height is less than the end shaft of the roller.

[0035] A lifting frame 10 is fixedly installed on the rear side of the rack 7, and the pressure plate 8 is fixedly installed on the top of the rear side of the lifting frame 10. A through groove 11 is provided in the lifting frame 10, and the through groove 11 is sleeved on the rear side of the side baffle 3. A lower end plate 12 is fixedly connected to the front side of the outer side of the side baffle 3. The lower end plate 12 is rotatably installed on the frame 1, and the lower end plate 12 is located directly below the upper end plate 5.

[0036] By providing the lifting frame 10 and the through slot 11, the cooperation between the lifting frame 10 and the through slot 11 can improve the stability of the side baffle 3 in the initial state. After the lower end plate 12 is provided, the side baffle 3 is located at the rear side of its rotation center, so that the side baffle 3 can maintain a good vertical state in the initial state, thereby improving the limiting effect on the roller.

[0037] A rear extension plate 13 is vertically installed at the bottom of the rear side surface of the side baffle 3, and the upper surface of the rear extension plate 13 is spaced apart from the lower surface of the lifting frame 10. When the lifting frame 10 is arranged so that the lower surface contacts the top of the rear extension plate 13, the side baffle 3 can rotate backward, and the side baffle 3 is an elastic telescopic rod, and the force-bearing rod 9 is fixedly arranged on the protruding end of the side baffle 3.

[0038] In the initial state and when the rack 7 descends and the bottom of the lifting frame 10 does not contact the rear extension plate 13, the bottom height of the side baffle 3 is less than the bottom height of the through groove 11. At this time, the lifting frame 10 has a limiting effect on the side baffle 3, which can effectively prevent the side baffle 3 from rotating, thereby ensuring that the side baffle 3 has a stable limiting effect on the roller.

[0039] While the rack 7 descends to the bottom of the lifting frame 10 and contacts the top of the rear extension plate 13, the side baffle 3 is compressed, and in the subsequent descending process of the rack 7, the bottom of the lifting frame 10 can drive the side baffle 3 to rotate more quickly by pressing down the rear extension plate 13, and can allow the lifting frame 10 to only descend a small distance to rotate the side baffle 3 to a top height that is less than the height of the roller end shaft, thereby improving the reaction speed of the side baffle 3.

[0040] A support plate 14 is fixedly provided on the frame 1, and a guide groove 15 with an opening facing downward and an "L"-shaped cross section is provided at the bottom of the inner side surface of the support plate 14. The guide groove 15 includes an arc portion 15.1 and a horizontal portion 15.2 distributed front to back. When the lifting frame 10 descends to the point where its lower surface contacts the top of the rear extension plate 13, the force-bearing rod 9 descends to a state where its height is less than the height of the front end notch of the arc portion 15.1.

[0041] By setting the support plate 14 and the guide groove 15, when the bottom of the lifting frame 10 presses down the rear extension plate 13 to drive the side baffle 3 to rotate, the force-bearing rod 9 will be forced to enter the guide groove 15. At this time, the side baffle 3 will continue to be compressed. After the side baffle 3 passes the connection between the arc portion 15.1 and the horizontal portion 15.2, the top end of the side baffle 3 will be reset under its own elastic action and extend until the top end moves to the top position of the support plate 14 during the subsequent rotation process. At this time, the top height of the side baffle 3 is greater than the height of the roller end shaft. Furthermore, in the process of the side baffle 3 rotating forward and resetting, it can push the roller end shaft, so that the new roller enters the frame 1.

[0042] A driving plate 16 is fixedly provided on the rear side of the lifting frame 10, and an elastic telescopic support rod 17 is provided at the bottom of the driving plate 16, and the elastic telescopic support rod 17 is installed on the frame 1. The rear end face of the driving plate 16 is an inclined surface with the top tilted forward. When the driving plate 16 descends to the lowest position, its upper surface is flush with the frame 1.

[0043] In the initial state, the height of the driving plate 16 is greater than the height of the roller frame. After the new roller is placed on the roller frame, the new roller presses the driving plate 16 down to the lowest position during the process of pushing the new roller forward. At this time, the driving plate 16 rotates the lower support plate 4 through the lifting frame 10, the rack 7 and the upper end plate 5, and the side baffle 3 is first compressed and then rotated.

[0044] With such arrangement, the side baffle 3, the lower support plate 4 and the longitudinal axis 2 can be moved by utilizing the gravity of the new roller and the tension applied by the conveyor belt to the new roller, so that the old roller can be separated from the frame 1. The support rod 17 uses its elastic force to maintain the height of the driving plate 16 in the initial state, and provides a force for the side baffle 3, the lower support plate 4 and the longitudinal axis 2 to reset. At the same time, in the initial state, the elastic force of the side baffle 3 itself can help the lifting frame 10 to be more stably maintained at the initial height.

[0045] The upper surface of the driving plate 16 is set so that the front side height is smaller than the rear side height to form a step groove 18. When the roller end shaft is located in the step groove 18, the driving rack 7 is in a state of being lowered by half the height, and the distance between the rear end of the step groove 18 and the center of the upper end plate 5 is greater than or equal to twice the outer diameter of the roller.

[0046] When the roller shaft of the new roller moves from the rear side of the upper surface of the driving plate 16 to the step groove 18, the driving plate 16 will be lifted half of the descending distance. During this process, the lifting plate and the rack 7 will reset half of the stroke upward, so that the lower support plate 4 will rotate downward and reset half of the stroke. Furthermore, before the new roller falls into the frame 1, the distance between the rear end of the lower support plate 4 and the lifting frame 10 is less than the outer diameter of the roller end shaft, ensuring that the new roller can be stably supported when it falls into the frame 1.

[0047] The portion of the lifting frame 10 located inside the through groove 11 and the driving plate 16 are both located between the outer end of the roller end shaft and the end face of the roller body. The top of the lifting frame 10 is open corresponding to the top of the through groove 11. The portion of the front side of the lifting frame 10 located inside the through groove 11 is supported on the rear side of the thinner portion of the roller end shaft. The rear side of the outer end of the roller end shaft is located in the through groove 11. The top of the lower support plate 4 is provided with a strip groove 19 for accommodating the outer end of the roller end shaft.

[0048] Such arrangement enables, in the initial state, the lifting frame 10 cooperates with the through slot 11 and the strip slot 19 to improve the limiting effect on the roller shaft, thereby improving the stability of the roller shaft. In addition, when the old roller falls, the through slot 11 can guide the old roller, so that the old roller falls more stably.

[0049] A forward extension plate 20 is vertically fixed to the bottom of the front side of the side baffle 3, and the distance between the forward extension plate 20 and the center of the upper end plate 5 is greater than or equal to twice the outer diameter of the roller. By setting the forward extension plate 20, the old roller can fall onto the forward extension plate 20 after falling. While the forward extension plate 20 supports the old roller, the old roller converts its falling kinetic energy into a force to drive the side baffle 3 to swing forward and reset. In the process of swinging forward and resetting, the side baffle 3 will push the new roller to move forward into the frame 1, and in this process, the lifting plate, the rack 7, the lower support plate 4 and the longitudinal axis 2 are completely reset to achieve the limit of the new roller.

[0050] In summary, after applying the roller stand of the embodiment that can replace rollers in situ without stopping the machine, when replacing rollers, it is only necessary to directly place the new roller on the roller stand, and the new roller is pushed forward under the drive of the conveyor belt and the assistance of the worker. When the new roller moves to the top of the driving plate 16, the old roller automatically falls, and the top of the side baffle 3 moves to the rear side of the end shaft of the new roller, and when the old roller falls onto the front extension plate 20, the baffle is driven to reset by its kinetic energy, so that the new roller is automatically pushed into the frame 1, and this process is accompanied by the reset of the lifting plate, the rack 7, the upper end plate 5, the lower support plate 4 and the longitudinal axis 2, so that the new roller is limited when it falls into the frame 1. In addition, it is very convenient to replace rollers in situ without stopping the machine.

[0051] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above implementation without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the scope of the present invention.

Claims

1. A roller support frame capable of replacing rollers in situ without stopping the machine, characterized in that: The invention comprises three frames (1) connected in sequence, wherein both ends of the frames (1) are provided with roller end limit assemblies, and a longitudinal axis (2) is rotatably connected between the front side ends of the roller end limit assemblies on both sides of the frames (1), and the cavity of the frames (1) forms a channel for the roller to downwardly detach from the frames (1), wherein the roller end limit assembly comprises a side baffle (3), a lower support plate (4) and an upper end plate (5), wherein the end of the longitudinal axis (2) is rotatably connected to the front end of the lower support plate (4), the lower support plate (4) is supported on the bottom of the roller end shaft, the bottom end of the side baffle (3) is rotatably connected to the frame (1), and the side baffle (3) is supported on the roller end shaft. On the rear side of the end shaft, the longitudinal axis (2) is supported on the front side of the roller shaft, the upper end plate (5) is rotatably mounted on the frame (1), the upper end plate (5) is coaxial with the roller, and the lower support plate (4) is fixedly arranged at the bottom of the inner side of the upper end plate (5), the rear circumferential surface of the upper end plate (5) is provided with tooth grooves (6) distributed at equal intervals, and the rear side surface of the upper end plate (5) is provided with a rack (7) distributed longitudinally and meshing with the tooth grooves (6), and a pressure plate (8) is arranged on the rack (7), and the pressure plate (8) is arranged so that when the rack (7) is lowered, the top end of the driving side baffle (3) is swung backward to a state where the height is less than the end shaft of the roller.

2. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 1, characterized in that: When the rack (7) descends to the lowest position, the longitudinal axis (2) rotates to between the top of the roller and the conveyor belt.

3. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 1, characterized in that: A force-bearing rod (9) is fixedly provided at the top of the rear side surface of the side baffle (3); the lower surface of the pressure plate (8) is an inclined surface with the rear end tilted upward, and the lower surface of the pressure plate (8) contacts the top of the force-bearing rod (9).

4. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 3, characterized in that: A lifting frame (10) is fixedly mounted on the rear side of the rack (7); the pressure plate (8) is fixedly mounted on the top of the rear side of the lifting frame (10); a through slot (11) is provided in the lifting frame (10); and the through slot (11) is sleeved on the rear side of the side baffle (3); a lower end plate (12) is fixedly connected to the front side of the outer side of the side baffle (3); the lower end plate (12) is rotatably mounted on the frame (1), and the lower end plate (12) is located directly below the upper end plate (5).

5. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 4, characterized in that: A rear extension plate (13) is vertically mounted at the bottom of the rear side surface of the side baffle (3); an upper surface of the rear extension plate (13) is spaced apart from a lower surface of the lifting frame (10); the lifting frame (10) is arranged so that when the lower surface contacts the top of the rear extension plate (13), the side baffle (3) can rotate backward; the side baffle (3) is an elastic telescopic rod, and the force-bearing rod (9) is fixedly arranged on the protruding end of the side baffle (3).

6. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 5, characterized in that: A support plate (14) is fixedly arranged on the frame (1), and a guide groove (15) with an opening facing downward and an "L"-shaped cross section is arranged at the bottom of the inner side surface of the support plate (14). The guide groove (15) includes an arc-shaped portion (15.1) and a horizontal portion (15.2) distributed front to back. When the lifting frame (10) is lowered to the point where its lower surface contacts the top of the rear extension plate (13), the force-bearing rod (9) is lowered to a state where its height is less than the height of the front notch of the arc-shaped portion (15.1).

7. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 5, characterized in that: A driving plate (16) is fixedly arranged on the rear side of the lifting frame (10); an elastic telescopic support rod (17) is arranged at the bottom of the driving plate (16); and the elastic telescopic support rod (17) is mounted on the frame (1); the rear end surface of the driving plate (16) is an inclined surface with the top end tilted forward; when the driving plate (16) is lowered to the lowest position, its upper surface is flush with the frame (1).

8. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 7, characterized in that: The upper surface of the driving plate (16) is arranged such that the front side height is smaller than the rear side height to form a step groove (18); when the end shaft of the roller is located in the step groove (18), the driving rack (7) is in a state of being lowered by half the height, and the distance between the rear side end of the step groove (18) and the center of the upper end plate (5) is greater than or equal to twice the outer diameter of the roller.

9. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 7, characterized in that: The portion of the lifting frame (10) located inside the through groove (11) and the driving plate (16) are both located between the outer end of the roller end shaft and the end surface of the roller body. The top of the lifting frame (10) is open and corresponds to the top of the through groove (11). The portion of the front side of the lifting frame (10) located inside the through groove (11) is supported on the rear side of the thinner portion of the roller end shaft. The rear side of the outer end of the roller end shaft is located in the through groove (11). The top of the lower support plate (4) is provided with a strip groove (19) for accommodating the outer end of the roller end shaft.

10. The roller support frame capable of replacing rollers in situ without stopping the machine as claimed in claim 4, characterized in that: A forward extension plate (20) is vertically fixed to the bottom of the front side of the side baffle plate (3), and the distance between the forward extension plate (20) and the center of the upper end plate (5) is greater than or equal to twice the outer diameter of the roller.

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