A roller changing trolley for grinding machine

Abstract

The present invention relates to the technical field of roller changing equipment, and specifically to a roller changing trolley for a grinding machine, comprising a trolley, a fixed support frame, a rotating support frame and a rolling assembly, wherein the fixed support frame is arranged on the trolley, a rotating hole is opened on the fixed support frame, the axis of the rotating hole is horizontal, and the rotating support frame is rotatably connected in the rotating hole. The present invention is provided with a rotating support frame, a loading frame and a rolling assembly, and when the grinding roller is disassembled and installed, the rolling assembly is in a rolling state, and at this time, there is rolling friction between the rubber roller and the grinding roller, and the grinding roller can be quickly placed in the placement hole and the grinding roller in the placement hole can be installed on the grinding machine, so that the work efficiency can be improved, so that the staff can quickly complete the replacement of the grinding roller, and during the rotation of the rotating support frame, the rolling assembly is in a locked state, and at this time, the rolling assembly limits the movement of the grinding roller along its axis direction, so as to prevent the relative movement between the grinding roller and the placement hole during the rotation of the grinding roller, thereby preventing the occurrence of safety accidents.

Description

Technical Field

[0001] The invention relates to the technical field of roll changing equipment, in particular to a roll changing trolley for a grinding machine. Background Art

[0002] The grinder roll changing trolley is an auxiliary equipment used on the grinder, mainly used in the grinding process of the steel rolling production line. It is designed to carry and replace the grinding rollers on the grinder. When the grinding roller is worn or needs to be replaced with a roller of a different specification, the roller changing trolley can safely and efficiently move the grinding roller weighing several tons out of the working area of ​​the grinder and send the new grinding roller to the designated location for installation.

[0003] When replacing the grinding roller, the existing roller changing trolley usually adopts the manual hoisting method to lift the old grinding roller from the working area of ​​the grinding machine, and then lift the new grinding roller to the working area of ​​the grinding machine. However, when using this kind of roller changing trolley to replace the grinding roller, the safety is insufficient, and the replacement efficiency is also low. Therefore, it is of great significance to develop a roller changing trolley that is convenient for replacing the grinding roller to improve the work efficiency and improve the work safety of the staff. Summary of the invention

[0004] Based on this, it is necessary to provide a grinder roll changing trolley to address the problems existing in the current grinder roll changing trolley, so as to solve the problems of insufficient safety and low grinding roller replacement efficiency when replacing grinding rollers.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A grinding machine roll changing trolley comprises:

[0007] Car;

[0008] A fixed support frame, the fixed support frame is arranged on the trolley, a rotating hole is opened on the fixed support frame, and the axis of the rotating hole is horizontal;

[0009] A rotating support frame, the rotating support frame is rotatably connected in the rotating hole, the rotating support frame can rotate around its axis, and two loading holes are provided on the rotating support frame, and the line connecting the centers of the two loading holes coincides with the diameter of the rotating support frame;

[0010] A loading frame is rotatably connected in the loading hole, and the loading frame is in the shape of a column. A placement hole is opened on the loading frame, and two rolling components are symmetrically arranged on the inner circumference of the placement hole with the diameter of the placement hole as the symmetry axis;

[0011] The rolling assembly has a rolling state and a locking state. When the rolling assembly is in the rolling state, the rolling assembly can guide the movement of the grinding roller along its axial direction. When the rolling assembly is in the locking state, the rolling assembly can limit the movement of the grinding roller along its axial direction.

[0012] In one embodiment, the rolling assembly includes a plurality of mounting blocks, a rubber roller, a snap-on gear and a snap-on strip. The plurality of mounting blocks are spaced apart along the axis of the loading frame. A mounting groove is provided at the upper end of the mounting block. The rubber roller is rotatably connected in the mounting groove. The snap-on gear is coaxially connected to the rubber roller. A connecting plate is elastically connected to the loading frame. The connecting plate can move along the axis of the loading frame. The plurality of snap-on strips are elastically connected to the connecting plate. The snap-on strip can snap-on with the tooth groove of the snap-on gear.

[0013] In one embodiment, the rolling assembly further comprises a driving disk, the driving disk can rotate around its axis, two guide holes are provided on the driving disk, the diameter of the guide holes is the same as that of the loading hole, the line connecting the centers of the two guide holes is vertical, and the line connecting the centers of the two guide holes coincides with the diameter of the driving disk;

[0014] The inner side surface of the driving disc close to the connecting plate is provided with a chamfer, and the driving disc is slidably connected with the connecting plate.

[0015] In one embodiment, the rolling assembly also includes a first concentric gear, a first drive gear and a first motor. The first motor is arranged on a fixed support frame. The output shaft of the first motor is fixedly connected to the first drive gear. The first concentric gear is concentrically fixedly connected to the drive disk, and the first drive gear is meshed with the first concentric gear.

[0016] In one embodiment, the outer peripheral surface of the rubber roller has a smaller diameter than the inner peripheral surface of the placement hole.

[0017] In one of the embodiments, a driving assembly is disposed on the fixed support frame, and the driving assembly is used to drive the rotating support frame to rotate around its axis.

[0018] In one embodiment, the driving assembly includes a second concentric gear and a second driving gear, the second concentric gear is arranged on a rotating support frame, the second concentric gear is coaxial with the rotating hole, a second motor is arranged on the fixed support frame, the output shaft of the second motor is fixedly connected to the second driving gear, and the second driving gear is meshed with the second concentric gear.

[0019] In one embodiment, the contact surfaces of the loading frame and the loading hole are coated with a wear-resistant material layer.

[0020] In one of the embodiments, connecting ribs are provided on the fixed support frame and the rotating support frame.

[0021] In one of the embodiments, a driving system is provided in the trolley, and the driving system is used to drive the trolley to move along a preset trajectory.

[0022] The beneficial effects of the present invention are:

[0023] The present invention is provided with a rotating support frame, a loading frame and a rolling assembly. When the grinding roller is disassembled and installed, the rolling assembly is in a rolling state. At this time, there is rolling friction between the rubber roller and the grinding roller, so that the grinding roller can be quickly placed in the placement hole and the grinding roller in the placement hole can be installed on the grinding machine. This can improve work efficiency and facilitate the staff to quickly complete the replacement of the grinding roller. During the rotation of the rotating support frame, the rolling assembly is in a locked state. At this time, the rolling assembly limits the movement of the grinding roller along its axial direction to prevent the grinding roller from moving relative to the placement hole during the rotation of the grinding roller, thereby preventing the occurrence of safety accidents. Moreover, since the rotating support frame and the loading frame are rotatably connected, when a grinding roller is placed in the placement hole, the overall center of gravity of the loading frame is biased downward, and the grinding machine roller changing trolley will not be caused to overturn during the process of adjusting the height position of the grinding roller. The overall stability of the device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of a grinder roll changing trolley of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a fixed support frame in a grinder roll changing trolley of the present invention;

[0026] Figure 3 It is a structural schematic diagram of a rotating support frame in a grinder roll changing trolley of the present invention;

[0027] Figure 4 It is a structural schematic diagram of a loading frame in a grinder roll changing trolley of the present invention;

[0028] Figure 5 This is a schematic diagram of the connection structure between the mounting block and the rubber roller in a grinder roll changing trolley of the present invention;

[0029] Figure 6 for Figure 5 Front view of

[0030] Figure 7 for Figure 6 Middle AA half-section axonometric drawing;

[0031] Figure 8 for Figure 6 Middle BB section view;

[0032] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure at C in the middle;

[0033] Fig.10 This is a schematic diagram of the structure of a driving disc in a roller changing trolley of a grinder according to the present invention;

[0034] Fig.11 for Fig.10 A top view of

[0035] Fig.12 for Fig.11 Middle DD half-section axonometric drawing;

[0036] Fig.13 for Fig.12 Schematic diagram of the enlarged structure at E in the middle;

[0037] Fig.14 for Figure 4 Schematic diagram of the enlarged structure at F in the middle.

[0038] in:

[0039] 100, trolley; 200, fixed support frame; 210, rotating hole; 220, connecting rib column; 300, rotating support frame; 310, loading hole; 400, loading frame; 410, placement hole; 500, rolling assembly; 510, mounting block; 511, mounting groove; 520, rubber roller; 530, snap-on gear; 540, clamping strip; 550, connecting plate; 560, first spring; 561, second spring; 570, driving disk; 571, guide hole; 580, first concentric gear; 590, first driving gear; 591, first motor; 600, driving assembly; 610, second concentric gear; 620, second driving gear; 630, second motor; 1000, grinding roller. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. 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.

[0041] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] like Figure 1-Figure 14 As shown, a roller changing trolley for a grinding machine includes a trolley 100, a fixed support frame 200, a rotating support frame 300 and a rolling assembly 500. The fixed support frame 200 is arranged on the trolley 100. A rotating hole 210 is provided on the fixed support frame 200. The axis of the rotating hole 210 is horizontal. The rotating support frame 300 is rotatably connected in the rotating hole 210. The rotating support frame 300 can rotate around its axis. Two loading holes 310 are provided on the rotating support frame 300. The connecting line of the centers of the two loading holes 310 coincides with the diameter of the rotating support frame 300. The loading holes 310 The inner rotation is connected with a loading frame 400, which is in the shape of a column. A placement hole 410 is opened on the loading frame 400. The inner circumference of the placement hole 410 is symmetrically provided with two rolling assemblies 500 with the diameter of the placement hole 410 as the symmetry axis. The rolling assembly 500 has a rolling state and a locking state. When the rolling assembly 500 is in the rolling state, the rolling assembly 500 can guide the movement of the grinding roller 1000 along its axial direction. When the rolling assembly 500 is in the locking state, the rolling assembly 500 can limit the movement of the grinding roller 1000 along its axial direction.

[0044] When replacing the grinding roller 1000, the staff first moves the trolley 100 to the area where the grinding machine is located, and then drives the rotating support frame 300 to rotate so that one of the placement holes 410 is located at the height of the grinding roller 1000 to be removed. Next, the staff first places the new grinding roller 1000 into the other placement hole 410, and then removes the old grinding roller 1000 and places the old grinding roller 1000 into the placement hole 410 corresponding to the grinding roller 1000. Next, the staff continues to drive the rotating support frame 300 to rotate so that the new grinding roller 1000 rotates to the grinding roller 1000 installation area of ​​the grinding machine, and then pushes the new grinding roller 1000 from the placement hole 410 to the installation area of ​​the grinding machine, thus completing the replacement of the grinding roller 1000 of the grinding machine.

[0045] It should be supplemented that, during the rotation of the rotating support frame 300, the rolling assembly 500 is in a locked state. At this time, the rolling assembly 500 limits the movement of the grinding roller 1000 along its axial direction to prevent the grinding roller 1000 from moving relative to the placement hole 410 during the rotation of the grinding roller 1000, thereby preventing the occurrence of safety accidents. Moreover, since the rotating support frame 300 and the loading frame 400 are rotatably connected, when the grinding roller 1000 is placed in the placement hole 410, the overall center of gravity of the loading frame 400 is biased downward, and the grinding machine roller changing trolley will not tip over during the process of adjusting the height position of the grinding roller 1000, and the overall stability of the device is better. When the grinding roller 1000 is disassembled and replaced, the rolling assembly 500 is in a rolling state. At this time, the rolling assembly 500 can guide the movement of the grinding roller 1000 along its axial direction, so as to quickly place the new grinding roller 1000 into the loading hole 310, and quickly place the old grinding roller 1000 into the loading hole 310, and quickly place the new grinding roller 1000 into the grinding roller 1000 installation area of ​​the grinding machine. This is to improve work efficiency and facilitate the staff to quickly complete the replacement of the grinding roller 1000.

[0046] It can be understood that when the new grinding roller 1000 is installed in the grinding machine and when the old grinding roller 1000 is removed from the grinding machine, there are grinding rollers 1000 in the placement holes 410 in the two loading racks 400. At this time, the weight of the two grinding rollers 1000 can stabilize the center of gravity of the roller changing trolley of the grinding machine during the replacement process, which can effectively prevent rollover.

[0047] It should also be noted that after the old grinding roller 1000 is replaced, the old grinding roller 1000 is located at the lower part of the rotating axis of the rotating support frame 300. When the old grinding roller 1000 needs to be transported to the dedicated placement position of the grinding roller 1000 by the grinder roller changing trolley, the old grinding roller 1000 is not easy to rotate around the rotating axis of the rotating support frame 300, and the transportation is more stable.

[0048] It should also be noted that when the grinding roller 1000 needs to be replaced, the two grinding rollers 1000 are placed on the loading frame 400 on the rotating support frame 300 at the same time. At this time, no matter whether the rotating support frame 300 is rotating or not, the center point height of the line connecting the centers of gravity of the two grinding rollers 1000 is always no higher than the height of the rotation center point of the rotating support frame 300. Therefore, the overall device is more stable when replacing the grinding rollers 1000.

[0049] It can be understood that the diameter of the placement hole 410 of the grinding machine roller changing trolley in the present invention is larger than the diameter of the grinding roller 1000, so that it can adapt to grinding rollers 1000 of different specifications, and through the rotation of the rotating support frame 300, the grinding machine roller changing trolley in the present invention can also adapt to the installation position of grinding rollers 1000 of different heights.

[0050] In a further embodiment, Figure 6-Figure 9 As shown, the rolling assembly 500 includes a plurality of mounting blocks 510, a rubber roller 520, a snap-on gear 530 and a snap-on strip 540. The plurality of mounting blocks 510 are spaced apart along the axis of the loading frame 400. A mounting groove 511 is provided at the upper end of the mounting block 510. The rubber roller 520 is rotatably connected in the mounting groove 511. The snap-on gear 530 is coaxially connected to the rubber roller 520. A connecting plate 550 is elastically connected to the loading frame 400. The connecting plate 550 can move along the axis of the loading frame 400. A plurality of snap-on strips 540 are elastically connected to the connecting plate 550. Specifically, the snap-on strip 540 and the connecting plate 550 are connected by a first spring 560. The snap-on strip 540 can snap-on with the tooth groove of the snap-on gear 530. The contour diameter of the outer circumference of the rubber roller 520 is smaller than the inner circumference diameter of the placement hole 410.

[0051] When the rolling assembly 500 is in a rolling state, the connecting plate 550 is pulled at this time, so that the connecting plate 550 drives the clamping strip 540 to move in the direction away from the clamping gear 530 through the first spring 560. At this time, the tooth groove of the clamping gear 530 and the clamping strip 540 are no longer clamped. At this time, when the grinding roller 1000 moves along the axis of the loading hole 310, under the action of the grinding roller 1000, the rubber roller 520 is forced to rotate. At this time, there is rolling friction between the grinding roller 1000 and the rubber roller 520, so as to quickly place the grinding roller 1000 in the corresponding placement hole 410. When the rotating support frame 300 is driven to rotate, the rolling assembly 500 is in a locked state. Specifically, the connecting plate 550 is pulled in the reverse direction, so that the connecting plate 550 drives the clamping strip 540 to move toward the direction close to the clamping gear 530 through the first spring 560, so that the clamping groove of the clamping gear 530 is clamped with the clamping strip 540. In this way, during the rotation of the rotating support frame 300, the rubber roller 520 will not rotate, which can effectively prevent the grinding roller 1000 from falling off the rubber roller 520.

[0052] It is understandable that when the grinding roller 1000 is pressed against the surface of the rubber roller 520, the surface of the rubber roller 520 will be compressed and produce a certain amount of deformation, thereby making the pressure between the rubber roller 520 and the grinding roller 1000 greater, and thus the friction force greater, effectively preventing the grinding roller 1000 from falling off the rubber roller 520.

[0053] It should also be noted that if Fig.14 As shown, the connecting plate 550 and the loading frame 400 are elastically connected via a second spring 561 .

[0054] In a further embodiment, Figure 10-13As shown, in order to drive the connecting plate 550 to move automatically (that is, during the rotation of the rotating support frame 300, the rolling assembly 500 is in a locked state, and when the grinding roller 1000 is removed or installed, the rolling assembly 500 is switched to a rolling state), the following mechanism is also added. Specifically, the rolling assembly 500 also includes a driving disk 570, and the driving disk 570 can rotate around its axis. The driving disk 570 is provided with two guide holes 571. The guide holes 571 have the same diameter as the loading hole 310. The center line of the two guide holes 571 is vertical, and the center of the two guide holes 571 is perpendicular to the center of the two guide holes 571. The connecting line of the center coincides with the diameter of the driving disk 570. The inner side surface of the driving disk 570 near the connecting plate 550 is chamfered. The driving disk 570 is slidingly connected to the connecting plate 550. The rolling assembly 500 also includes a first concentric gear 580, a first driving gear 590 and a first motor 591. The first motor 591 is arranged on the fixed support frame 200. The output shaft of the first motor 591 is fixedly connected to the first driving gear 590. The first concentric gear 580 is concentrically fixedly connected to the driving disk 570, and the first driving gear 590 is meshed with the first concentric gear 580.

[0055] When in use, the staff starts the first motor 591, and the first motor 591 drives the first driving gear 590 to rotate, and the first driving gear 590 drives the driving plate 570 to rotate. After one of the guide holes 571 corresponds to the installation position of the grinding roller 1000 of the grinding machine, the first motor 591 stops rotating, and then the rotating support frame 300 is rotated until the two placement holes 410 are concentric with the two guide holes 571, and then the new grinding roller 1000 is placed at the lower part of the rotating support frame 300. The old grinding roller 1000 is then removed and placed in the placement hole 410 located at the upper part of the rotating support frame 300. Next, the rotating support frame 300 continues to rotate so that the placement hole 410 loaded with the new grinding roller 1000 is concentric with the guide hole 571 at the upper part of the driving disk 570, and the placement hole 410 loaded with the old grinding roller 1000 is concentric with the guide hole 571 at the lower part of the driving disk 570. Then, the new grinding roller 1000 can be installed at the corresponding installation position of the grinding machine.

[0056] When the rotating support frame 300 rotates so that the placement hole 410 and the guide hole 571 switch from a concentric state to a non-concentric state, under the chamfered extrusion of the inner side of the driving disk 570 close to the connecting plate 550, the connecting plate 550 is forced to move toward the direction close to the engaging gear 530, so that the engaging strip 540 is engaged into the engaging groove of the engaging gear 530. At this time, the rubber roller 520 can no longer be rotated under the force, and at the same time, the second spring 561 is compressed.

[0057] When the rotating support frame 300 rotates until the placement hole 410 and the guide hole 571 are concentric again, the driving disk 570 no longer squeezes the connecting plate 550, and the compression force of the second spring 561 is released. The second spring 561 pushes the connecting plate 550, causing the connecting plate 550 to move in the opposite direction and reset, so that the connecting plate 550 drives the clamping strip 540 away from the clamping gear 530 through the first spring 560. At this time, the rotation of the rubber roller 520 is no longer locked, and the staff can quickly move the grinding roller 1000 out of the placement hole 410.

[0058] In a further embodiment, Fig.10 As shown, a driving assembly 600 is provided on the fixed support frame 200, and the driving assembly 600 is used to drive the rotating support frame 300 to rotate around its axis. The driving assembly 600 includes a second concentric gear 610 and a second driving gear 620. The second concentric gear 610 is provided on the rotating support frame 300, and the second concentric gear 610 is coaxial with the rotating hole 210. A second motor 630 is provided on the fixed support frame 200, and the output shaft of the second motor 630 is fixedly connected to the second driving gear 620, and the second driving gear 620 is meshed with the second concentric gear 610.

[0059] When it is necessary to drive the rotating support frame 300 to rotate, the second motor 630 is started, the second motor 630 drives the second driving gear 620 to rotate, the second driving gear 620 drives the second concentric gear 610 to rotate, and the second concentric gear 610 drives the rotating support frame 300 to rotate, so that the rotating support frame 300 rotates around its axis.

[0060] In a further embodiment, the contact surfaces of the loading frame 400 and the loading hole 310 are coated with a wear-resistant material layer.

[0061] This configuration is to reduce the friction between the loading frame 400 and the loading hole 310, and prevent the loading hole 310 from being excessively worn so that the loading hole 310 is no longer a round hole.

[0062] In a further embodiment, connecting ribs 220 are provided on the fixed support frame 200 and the rotating support frame 300 .

[0063] The connecting ribs 220 are provided to enhance the support strength of the fixed support frame 200 and the rotating support frame 300 .

[0064] In a further embodiment, a driving system is provided in the trolley 100, and the driving system is used to drive the trolley 100 to move along a preset trajectory.

[0065] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A roller changing trolley for a grinding machine, characterized in that: include: Car; A fixed support frame, the fixed support frame is arranged on the trolley, a rotating hole is opened on the fixed support frame, and the axis of the rotating hole is horizontal; A rotating support frame, the rotating support frame is rotatably connected in the rotating hole, the rotating support frame can rotate around its axis, and two loading holes are provided on the rotating support frame, and the line connecting the centers of the two loading holes coincides with the diameter of the rotating support frame; A loading frame is rotatably connected in the loading hole, and the loading frame is in the shape of a column. A placement hole is opened on the loading frame, and two rolling components are symmetrically arranged on the inner circumference of the placement hole with the diameter of the placement hole as the symmetry axis; The rolling assembly has a rolling state and a locking state. When the rolling assembly is in the rolling state, the rolling assembly can guide the movement of the grinding roller along its axial direction. When the rolling assembly is in the locking state, the rolling assembly can limit the movement of the grinding roller along its axial direction. The rolling assembly includes a plurality of mounting blocks, a rubber roller, a clamping gear and a clamping strip. The plurality of mounting blocks are arranged at intervals along the axis of the loading frame. A mounting groove is provided at the upper end of the mounting block. The rubber roller is rotatably connected in the mounting groove. The clamping gear is coaxially connected with the rubber roller. A connecting plate is elastically connected to the loading frame. The connecting plate can move along the axis of the loading frame. The plurality of clamping strips are elastically connected to the connecting plate. The clamping strip can be clamped with the tooth groove of the clamping gear. The rolling assembly also includes a driving disk. The driving disk can rotate around its axis. Two guide holes are provided on the driving disk. The diameter of the guide hole is the same as that of the loading hole. The connecting line of the centers of the two guide holes is vertical, and the connecting line of the centers of the two guide holes coincides with the diameter of the driving disk. The inner side surface of the driving disc close to the connecting plate is provided with a chamfer, and the driving disc is slidably connected with the connecting plate; When in use, the connecting plate is pulled, and the connecting plate drives the clamping strip to move in the direction away from the clamping gear through the first spring, so that the tooth groove of the clamping gear is no longer clamped with the clamping strip, and the rolling assembly is in a rolling state at this time; when the connecting plate is pulled in the opposite direction, the connecting plate drives the clamping strip to move in the direction close to the clamping gear through the first spring, so that the clamping groove of the clamping gear is clamped with the clamping strip, and the rolling assembly is in a locked state at this time.

2. The grinder roll changing trolley according to claim 1, characterized in that: The rolling assembly also includes a first concentric gear, a first driving gear and a first motor. The first motor is arranged on a fixed support frame. The output shaft of the first motor is fixedly connected to the first driving gear. The first concentric gear is concentrically fixedly connected to the driving disk, and the first driving gear is meshed with the first concentric gear.

3. The grinder roll changing trolley according to claim 1, characterized in that: The outer peripheral surface of the rubber roller has a contour diameter that is smaller than the inner peripheral surface diameter of the placement hole.

4. The grinder roll changing trolley according to claim 1, characterized in that: The fixed support frame is provided with a driving assembly, and the driving assembly is used to drive the rotating support frame to rotate around its axis.

5. The grinder roll changing trolley according to claim 4, characterized in that: The driving assembly includes a second concentric gear and a second driving gear. The second concentric gear is arranged on a rotating support frame. The second concentric gear is coaxial with the rotating hole. A second motor is arranged on the fixed support frame. The output shaft of the second motor is fixedly connected to the second driving gear. The second driving gear is meshed with the second concentric gear.

6. The grinder roll changing trolley according to claim 1, characterized in that: The contact surfaces of the loading frame and the loading hole are coated with a wear-resistant material layer.

7. The grinder roll changing trolley according to claim 1, characterized in that: The fixed support frame and the rotating support frame are provided with connecting ribs.

8. The grinder roll changing trolley according to claim 1, characterized in that: A driving system is provided in the trolley, and the driving system is used to drive the trolley to move along a preset track.

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