A drum gear coupling, a quick roller changing device and a quick roller changing method

Abstract

The present invention discloses a drum gear coupling, which includes a roller end sleeve assembly, an inner gear ring, a slewing support frame assembly, and an outer gear sleeve II; the roller end sleeve assembly includes an outer gear sleeve I, and the left short inner teeth and the right long inner teeth of the inner teeth are respectively meshed with the outer teeth on the outer gear sleeve I and the outer gear sleeve II, and the slewing support frame assembly is installed at the connecting end of the inner gear ring and the outer gear sleeve II. The drum gear coupling of the present invention realizes telescopic movement through a gear pair, which greatly improves its bearing capacity. The present invention also discloses a quick roller changing device, which includes a base, a support, a toggle assembly, and a moving assembly; the toggle assembly includes a toggle plate, a handle, a small shaft I, and a small shaft II, and the moving assembly includes a positioning plate; the handle, the support, and the toggle plate are connected through the small shaft I and the small shaft II; the toggle plate is connected to the front and rear ear shafts in the slewing support frame, and the raised guide rail on the upper part of the positioning plate cooperates with the axial groove of the slewing support frame. The quick roller changing device of the present invention can realize quick roller changing.

Description

Technical Field

[0001] The invention belongs to the field of transmission technology, and relates to a drum gear coupling, a quick roller changing device and a roller changing method, which are suitable for connecting transmission between transmission equipment on a wire production line. Background Art

[0002] The telescopic drum gear coupling is the main transmission equipment on the wire production line. It is connected to the roller at one end and the reducer at the other end. It transmits power to the roller. It is mainly used for horizontal and vertical conversion connections under high-speed and heavy-load conditions. It requires a certain deflection angle and telescopic amount, high load-bearing capacity, high transmission accuracy and smooth transmission.

[0003] The telescopic drum gear coupling generally includes a gear pair roller end assembly, a reducer assembly, and an intermediate shaft with a spline pair. The spline pair is used to realize the coupling telescopic. Since the bearing capacity of the spline is lower than that of the drum gear, the existing telescopic drum gear coupling cannot meet certain working conditions such as heavy load and high speed. At the same time, after the shaft sleeve of the roller end in the existing telescopic drum gear coupling is worn, multiple parts of the roller end assembly must be disassembled to separate the roller end assembly from the inner gear ring, which greatly reduces the efficiency of roller replacement. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a drum gear coupling, which realizes expansion and contraction through a gear pair, greatly improves its load-bearing capacity, is applicable to specific working conditions such as heavy load and high speed, and greatly prolongs its service life. At the same time, it can realize rapid roller replacement. In addition, the present invention also provides a rapid roller replacement device and a rapid roller replacement method, which can realize rapid replacement of the roller end assembly of the drum gear coupling.

[0005] The present invention discloses a drum gear coupling, which comprises a roller end shaft sleeve assembly, an inner gear ring, a slewing support frame assembly and an outer gear sleeve II; the roller end shaft sleeve assembly comprises an outer gear sleeve I, the left end short inner teeth and the right end long inner teeth of the inner teeth are respectively meshed with the outer teeth on the outer gear sleeve I and the outer gear sleeve II, and the slewing support frame assembly is installed at the connecting end of the inner gear ring and the outer gear sleeve II.

[0006] Furthermore, the slewing support frame assembly includes a pressure cover, a slewing support frame, a bearing, a clamping cover, and a stopper sleeve; the slewing support frame is sleeved on the outside of the inner gear sleeve, and a bearing is provided between its large inner hole and the stepped outer circle of the inner gear sleeve; the pressure cover is sleeved on the large outer circle of the inner gear sleeve, and it clamps the left end face of the slewing support frame and the left end face of the bearing and is connected to the slewing support frame through fasteners; the stopper sleeve is sleeved on the outer gear sleeve II, and its large outer circle cooperates with the inner hole of the inner gear sleeve; the inner and outer circles of the clamping cover respectively cooperate with the small outer circle of the stopper sleeve and the small inner hole of the slewing support frame, and it clamps the right end face of the bearing and the right end face of the inner gear sleeve and is connected to the inner gear sleeve through fasteners.

[0007] Furthermore, the outer circle of the slewing support frame is provided with two front and rear ear shafts in the horizontal direction, and the bottom of the outer circle of the slewing support frame is provided with an axial groove.

[0008] The invention discloses a quick roller changing device, which comprises a base, a support, a toggle assembly and a moving assembly; the toggle assembly comprises a toggle plate, a handle, a small shaft I and a small shaft II, and the moving assembly comprises a positioning plate; the support is fixed on the moving base, the toggle plate is located in the middle of the front and rear brackets of the support, and the handle is located in front of the front bracket of the support; the toggle plate is composed of a shaft tube at the bottom and two forks connected to the front and rear ends of the shaft tube; the handle, the support and the toggle plate are connected through the small shaft I and the small shaft II, and the positioning plate is fixed on the support; the toggle plate is connected to the front and rear ear shafts in the rotary support frame, and the raised guide rail on the upper part of the positioning plate cooperates with the axial groove of the rotary support frame.

[0009] Furthermore, the shift plate includes a lower shaft tube and two shift forks fixed on the front and rear parts of the shaft tube; the front and rear holes of the shaft tube are connected to the small shaft I and the small shaft II, and the U-shaped groove on the top of the shift fork cooperates with the front and rear ear shafts.

[0010] Furthermore, the middle and rear section of small shaft I passes through the hole at the bottom of the handle and cooperates with the hole at the bottom of the front bracket of the support and the hole at the front end of the shaft tube; small shaft II cooperates with the hole at the bottom of the rear bracket of the support and the hole at the rear end of the shaft tube.

[0011] Furthermore, a quick roller changing device also includes a limit unit, which includes a fixed plate and two proximity switches. The fixed plate is arranged behind the rear bracket of the support and the lower part is connected to the support through fasteners. The left and right proximity switches are arranged on the top of the fixed plate.

[0012] Furthermore, a quick roller changing device also includes a positioning pin plate, which is arranged in front of the handle, and the positioning pins of the positioning pin plate are connected to the holes on the upper part of the handle and the holes on the upper part of the support front bracket.

[0013] Furthermore, a quick roller changing device also includes a sleeve and a pressure block. The sleeve is arranged in a U-shaped groove at the top of the fork, the front and rear ear shafts cooperate with the sleeve, and the pressure block is pressed against the end faces of the sleeve and the ear shaft and connected by fasteners.

[0014] The present invention provides a quick roller changing method, which comprises the following steps: 1. The quick roller changing device moves to the position of the rotary support frame assembly in the drum gear coupling, so that the raised guide rail on the upper part of the positioning plate cooperates with the axial groove on the lower part of the rotary support frame, and at the same time, the U-shaped groove on the top of the fork in the toggle plate is connected with the front and rear ear shafts of the rotary support frame; 2. The handle is pulled, which drives the toggle plate to rotate synchronously through the small shaft I and the small shaft II, and the toggle plate drives the rotary support frame assembly and the inner gear sleeve to move axially through the rotary support frame; 3. When the rotary support frame assembly drives the inner gear sleeve to move to the right to a certain stroke, it is disengaged from the outer gear sleeve I, and the old roller end assembly is quickly replaced; 4. After the new roller end assembly is installed, the rotary support frame assembly drives the inner gear sleeve to move to the left to a certain stroke and meshes with the outer gear sleeve I, and the coupling assembly is now completed.

[0015] The advantages of a drum-shaped gear coupling of the present invention are: 1. The extension and retraction are realized through a gear pair, which greatly improves its load-bearing capacity, can be applied to specific working conditions such as heavy load and high speed, and greatly prolongs the service life; 2. The slewing support frame assembly is connected to the inner gear sleeve, and the slewing support frame assembly can drive the inner gear sleeve to move axially to realize rapid roller replacement; 3. Both the outer gear sleeve I and the inner gear sleeve are provided with guide angles for easy rapid resetting. The advantages of a quick roller changing device of the present invention are: 1. By turning the handle, the slewing support frame assembly and the inner gear sleeve are driven to move axially, so that the inner gear sleeve can be separated from the outer gear sleeve I on the left end, so as to realize rapid replacement of the roller end assembly; 2. A limiting device is provided to ensure a safe moving distance when replacing the roller end assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the drum gear coupling of the present invention.

[0017] Figure 2 yes Figure 1 Right view of .

[0018] Figure 3 It is a front view of the quick roller changing device of the present invention.

[0019] Figure 4 yes Figure 2 Right view of .

[0020] Figure 5 A schematic diagram of a toggle plate.

[0021] Figure 6 This is the main view of the quick roller change.

[0022] Figure 7 For along Figure 6 Section view along line AA.

[0023] Figure 8 yes Figure 7 A magnified schematic diagram of point B in the middle. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] from Figure 1 , Figure 2 It can be seen that the present invention is a drum-shaped gear coupling, which includes a roller end sleeve assembly, an inner gear ring 21, a slewing support frame assembly, and an outer gear sleeve II 22; the roller end sleeve assembly includes an outer gear sleeve I 20, and the short inner teeth at the left end and the long inner teeth at the right end of the inner gear sleeve 21 are respectively meshed with the outer teeth on the outer gear sleeve I 20 and the outer gear sleeve II 22, and the slewing support frame assembly is installed at the connecting end of the inner gear ring 21 and the outer gear sleeve II 22.

[0027] The advantages of the drum gear coupling of the present invention are: the coupling torque is transmitted through the inner gear sleeve 21, the outer gear sleeve I20, and the outer gear sleeve II22; the outer gear sleeve II22 realizes the expansion and contraction of the drum gear coupling through axial movement relative to the inner gear sleeve 21, which greatly improves its load-bearing capacity and is suitable for specific working conditions such as heavy load and high speed.

[0028] Example 2

[0029] from Figure 1 , Figure 2 It can be seen that the present invention is a drum-shaped gear coupling: the slewing support frame assembly includes a pressure cover 23, a slewing support frame 24, a bearing 25, a clamping cover 26, and a stopper sleeve 27; the slewing support frame 24 is sleeved on the outside of the inner gear sleeve 21, and a bearing 25 is provided between its large inner hole and the stepped outer circle of the inner gear sleeve 21; the pressure cover 23 is sleeved on the large outer circle of the inner gear sleeve 21, and it clamps the left end face of the slewing support frame 24 and the left end face of the bearing 25 and is connected to the slewing support frame 24 through a fastener; the stopper sleeve 27 is sleeved on the outer gear sleeve II 22, and its large outer circle cooperates with the inner hole of the inner gear sleeve 21; the inner and outer circles of the clamping cover 26 respectively cooperate with the small outer circle of the stopper sleeve 27 and the small inner hole of the slewing support frame 24, and it clamps the right end face of the bearing 25 and the right end face of the inner gear sleeve 21 and is connected to the inner gear sleeve 21 through a fastener.

[0030] The functions of the slewing support frame assembly are: 1. Supporting the inner gear sleeve 21 to ensure the strength of the drum gear coupling and sealing it through the stop sleeve 27; 2. The clamping cover 26 is connected to the inner gear sleeve 21 as a whole, so that the slewing support frame 24 can drive the inner gear sleeve 21 to move axially, so that the inner gear sleeve 21 is separated or meshed with the outer gear sleeve Ⅰ20, so as to realize the rapid replacement of the roller end sleeve assembly.

[0031] Example 3

[0032] from Figure 1 , Figure 2It can be seen that the drum gear coupling of the present invention has two front and rear ear shafts 241 arranged on the outer circle of the slewing support frame 24 in the horizontal direction, and an axial groove 242 is arranged on the bottom of the outer circle of the slewing support frame 24 .

[0033] The slewing support frame is connected to the roll changing device through the ear shaft and the groove, and the roll end assembly can be quickly replaced through the roll changing device.

[0034] Example 4

[0035] from Figure 1 , Figure 2 It can be seen that the present invention is a drum-shaped gear coupling: the roller end sleeve assembly also includes a safety cover 28 and a dust ring 29; the safety cover 28 is sleeved on the left end outer circle of the outer gear sleeve Ⅰ20 and is pressed on the end face of the outer gear sleeve Ⅰ20 and connected thereto, and the dust ring 29 is sleeved on the right end outer circle of the outer gear sleeve Ⅰ20 and cooperates with the inner hole of the inner gear sleeve 21.

[0036] The safety cover 28 is screwed to the outer gear sleeve Ⅰ20 and covers the left end of the drum gear coupling to prevent dust, dirt, etc. from entering the interior of the coupling; the dustproof ring 29 is combined with the O-ring and is sleeved on the outer circle of the outer gear sleeve Ⅰ20 to form a seal for the left end tooth of the drum gear coupling.

[0037] Example 5

[0038] from Figure 1 , Figure 2 It can be seen that in the drum-shaped gear coupling of the present invention, both end faces of the tooth portion of the external gear sleeve Ⅰ20 and both end faces of the short inner teeth of the internal gear sleeve 21 are provided with guide angles.

[0039] The teeth of the outer gear sleeve Ⅰ20 and the inner gear sleeve 21 are provided with guide angles, so as to facilitate the quick separation and installation between the inner gear sleeve 21 and the outer gear sleeve Ⅰ20.

[0040] Example 6

[0041] from Figure 3 , Figure 4 , Figure 5It can be seen that the present invention provides a quick roller changing device: it includes a base 11, a support 12, a toggle assembly, and a moving assembly; the toggle assembly includes a toggle plate 13, a handle 14, a small shaft I 15, and a small shaft II 16, and the moving assembly includes a positioning plate 17; the support 12 is fixed on the top of the moving base 11, the toggle plate 13 is located in the middle of the front and rear brackets of the support 12, and the handle 14 is located in front of the front bracket of the support 12; the toggle plate 13 is composed of a lower shaft tube and two forks connected to the front and rear ends of the shaft tube; the handle 14, the support 12, and the toggle plate 13 are connected by small shafts I 15 and small shafts II 16, and the positioning plate 17 is fixed on the top of the support 12; the toggle plate 13 is connected to the front and rear ear shafts 241 in the rotating support frame 24, and the raised guide rail on the upper part of the positioning plate 17 cooperates with the axial groove 242 of the rotating support frame 24.

[0042] When the roller needs to be changed, the quick roller changing device moves to the rotary support frame assembly in the drum gear coupling 1, so that the toggle plate 13 is connected to the front and rear ear shafts 24, and the positioning plate 17 is matched with the axial groove 242. When the handle 14 is pulled, the toggle plate 13 is driven to rotate synchronously through the small shaft I 15 and the small shaft II 16, and the toggle plate 13 drives the rotary support frame to move axially along the guide rail of the positioning plate 17 to achieve quick roller change.

[0043] Example 7

[0044] from Figure 3 , Figure 4 , Figure 5 It can be seen that the present invention is a quick roller changing device: the shift plate 13 includes a lower shaft tube 131 and two shift forks 132 fixed on the front and rear parts of the shaft tube 131; the front and rear holes of the shaft tube 131 are connected to the small shaft I 15 and the small shaft II 16, and the U-shaped groove on the top of the shift fork 132 cooperates with the front and rear ear shafts 241.

[0045] The toggle plate 13 is connected to the small shaft I15 and the small shaft II16 through the shaft tube 131, so that when the handle 4 is pulled, the small shaft I15 and the small shaft II16 drive the toggle plate 13 to rotate synchronously; the toggle plate 13 cooperates with the front and rear ear shafts 241 of the rotary support frame through the U-shaped groove at the top of the fork 132, so that the toggle plate 13 drives the rotary support frame 24 to rotate.

[0046] Example 8

[0047] from Figure 3 , Figure 4 , Figure 5 It can be seen that the present invention provides a quick roller changing device: the middle and rear section of the small shaft I 15 passes through the hole at the bottom of the handle 14 and cooperates with the hole at the bottom of the front bracket of the support 12 and the hole at the front end of the shaft tube 131; the small shaft II 16 cooperates with the hole at the bottom of the rear bracket of the support 12 and the hole at the rear end of the shaft tube 131.

[0048] The toggle plate 13 forms an integral fork with the handle 14 through the small shaft I 15 and the small shaft II 16 , so that the toggle plate 13 rotates synchronously with the toggle of the handle 14 .

[0049] Example 9

[0050] from Figure 3 , Figure 4 , Figure 5 It can be seen that the present invention provides a quick roller changing device: small shaft I 15 and small shaft II 16 are both provided with pin holes, which are connected to the holes at the front and rear ends of the shaft tube 132 through pins.

[0051] The small shaft I 15 and the small shaft II 16 are connected to the shaft tube 132 via pins, thereby ensuring the reliability of the connection between the small shaft I 15 and the small shaft II 16 and the toggle plate 13 .

[0052] Example 10

[0053] from Figure 3 , Figure 4 , Figure 5 It can be seen that in the quick roller changing device of the present invention, the lower part of the positioning plate 17 is fixed on the upper sides of the left and right brackets of the support 12 and is higher than the shaft tube 131 .

[0054] The lower portion of the positioning plate 17 is higher than the shaft tube 131 , so that the shaft tube 131 will not interfere with the positioning plate 17 when rotating.

[0055] Embodiment 11

[0056] from Figure 3 , Figure 4 , Figure 5 It can be seen that the present invention provides a quick roller changing device: it also includes a limit assembly, the limit assembly includes a fixed plate 18 and two proximity switches 19, the fixed plate 18 is arranged behind the rear bracket of the support 12 and the lower part is connected to the support 12 through fasteners, and the left and right proximity switches 19 are arranged on the top of the fixed plate 18.

[0057] The two proximity switches 19 limit the left and right extreme positions of the slewing support frame, thereby controlling the moving distance of the slewing support assembly to ensure a safe moving distance when replacing the roller end assembly.

[0058] Example 12

[0059] from Figure 3 , Figure 4 , Figure 5 It can be seen that the present invention is a quick roller changing device: it also includes a positioning pin plate 10, which is arranged in front of the handle 14, and the positioning pins of the positioning pin plate 10 are connected to the holes on the upper part of the handle 14 and the holes on the upper part of the front bracket of the support 12.

[0060] Since the handle 14 is long and requires a large pulling force, the positioning pin plate 10 is connected with the handle and the support to provide a support point, ensuring that the toggle plate 13 can be reliably driven to rotate when the handle is pulled.

[0061] Example 13

[0062] from Figure 3 , Figure 4 , Figure 5 It can be seen that the quick roller changing device of the present invention further includes a locking screw 111 , and the clamping plate of the positioning pin plate 10 is tightly pressed against the rod of the handle 14 and is connected via the locking screw 111 .

[0063] The locking screw 111 plays a role of positioning and stopping, ensuring that the handle 14 and the toggle plate 13 are fixed and stable relative to the support 12 .

[0064] Embodiment 14

[0065] from Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 It can be seen that the present invention is a quick roller changing device: it also includes a sleeve 112 and a pressure block 113, the sleeve 112 is arranged in a U-shaped groove at the top of the fork 132, the front and rear ear shafts 241 cooperate with the sleeve 112, and the pressure block 113 is pressed on the end faces of the sleeve 112 and the ear shaft 241 and connected by fasteners.

[0066] The shift fork 132 cooperates with the ear shaft 241 through the shaft sleeve 112 , and the shift fork 132 is fixedly connected to the ear shaft 241 through the pressing block 113 , so that the shift plate 13 can move axially along the positioning plate 17 with the rotary support frame 24 and the inner gear ring 21 .

[0067] Embodiment 15

[0068] from Figure 6 , Figure 7 , Figure 8It can be seen that the present invention provides a method for quickly changing rollers, which includes the following steps: 1. The quick roller changing device 1 is moved to the position of the rotary support frame assembly in the drum-shaped gear coupling 2, so that the raised guide rail on the upper part of the positioning plate 17 cooperates with the axial groove 242 on the lower part of the rotary support frame 24, and at the same time, the U-shaped groove on the top of the fork 132 in the toggle plate 13 is connected to the front and rear ear shafts 241 of the rotary support frame 24; 2. The handle 14 is pulled, and it drives the toggle plate 13 to rotate synchronously through the small shaft Ⅰ15 and the small shaft Ⅱ16, and the toggle plate 13 drives the rotary support frame assembly and the inner gear sleeve 21 to move axially through the rotary support frame 24; 3. When the rotary support frame assembly drives the inner gear sleeve 21 to move to the right to a certain stroke, it disengages from the outer gear sleeve Ⅰ20, and the old roller end assembly is quickly replaced; 4. After the new roller end assembly is installed, the rotary support frame assembly drives the inner gear sleeve 21 to move to the left to a certain stroke and engages with the outer gear sleeve Ⅰ20, and the coupling assembly is now completed.

[0069] The advantages of a drum-shaped gear coupling of the present invention are: 1. The extension and retraction are realized through a gear pair, which greatly improves its load-bearing capacity, can be applied to specific working conditions such as heavy load and high speed, and greatly prolongs the service life; 2. The slewing support frame assembly is connected to the inner gear sleeve, and the slewing support frame assembly can drive the inner gear sleeve to move axially to realize rapid roller replacement; 3. Both the outer gear sleeve I and the inner gear sleeve are provided with guide angles for easy rapid resetting. The advantages of a quick roller changing device of the present invention are: 1. By turning the handle, the slewing support frame assembly and the inner gear sleeve are driven to move axially, so that the inner gear sleeve can be separated from the outer gear sleeve I on the left end, so as to realize rapid replacement of the roller end assembly; 2. A limiting device is provided to ensure a safe moving distance when replacing the roller end assembly.

Claims

1. A drum gear coupling, characterized in that: It comprises a roller end shaft sleeve assembly, an inner gear ring (21), a slewing support frame assembly, and an outer gear sleeve II (22); the roller end shaft sleeve assembly comprises an outer gear sleeve I (20), the short inner teeth at the left end and the long inner teeth at the right end of the inner gear sleeve (21) are respectively meshed with the outer teeth on the outer gear sleeve I (20) and the outer gear sleeve II (22), and the slewing support frame assembly is installed at the connection end between the inner gear ring (21) and the outer gear sleeve II (22).

2. A drum gear coupling according to claim 1, characterized in that: The slewing support frame assembly comprises a pressure cover (23), a slewing support frame (24), a bearing (25), a pressing cover (26), and a stopper sleeve (27); the slewing support frame (24) is sleeved outside the inner gear sleeve (21), and a bearing (25) is arranged between the large inner hole of the pressure cover (23) and the stepped outer circle of the inner gear sleeve (21); the pressure cover (23) is sleeved on the large outer circle of the inner gear sleeve (21), and the left end face of the pressing slewing support frame (24) and the bearing (25) are The left end face is connected to the slewing support frame (24) through a fastener; the stopper sleeve (27) is sleeved on the outer gear sleeve II (22), and its large outer circle is matched with the inner hole of the inner gear sleeve (21); the inner and outer circles of the pressing cover (26) are respectively matched with the small outer circle of the stopper sleeve (27) and the small inner hole of the slewing support frame (24), and the right end face of the pressing bearing (25) and the right end face of the inner gear sleeve (21) are connected to the inner gear sleeve (21) through a fastener.

3. A drum gear coupling according to claim 2, characterized in that: The outer circle of the slewing support frame (24) is provided with two front and rear ear shafts (241) in the horizontal direction, and the bottom of the outer circle of the slewing support frame (24) is provided with an axial groove (242).

4. A quick roller changing device, characterized in that: It comprises a base (11), a support (12), a toggle assembly, and a moving assembly; the toggle assembly comprises a toggle plate (13), a handle (14), a small shaft I (15), and a small shaft II (16); the moving assembly comprises a positioning plate (17); the support (12) is fixed on the top of the moving base (11); the toggle plate (13) is located in the middle of the front and rear brackets of the support (12); the handle (14) is located in front of the front bracket of the support (12); the toggle plate (13) is arranged from the bottom to the bottom The handle (14), the support (12) and the toggle plate (13) are connected through a small shaft I (15) and a small shaft II (16); the positioning plate (17) is fixed on the support (12); the toggle plate (13) is connected to the front and rear ear shafts (241) of the slewing support frame (24); the raised guide rail on the upper part of the positioning plate (17) is matched with the axial groove (242) of the slewing support frame (24).

5. A quick roller changing device according to claim 4, characterized in that: The shift plate (13) comprises a shaft tube (131) at the bottom and two shift forks (132) fixed on the front and rear parts of the shaft tube (131); the front and rear holes of the shaft tube (131) are connected to the small shaft I (15) and the small shaft II (16), and the U-shaped grooves on the tops of the shift forks (132) are matched with the front and rear ear shafts (241).

6. A quick roller changing device according to claim 4, characterized in that: The middle and rear section of the small shaft I (15) passes through the hole at the bottom of the handle (14) and then matches with the hole at the bottom of the front bracket of the support (12) and the hole at the front end of the shaft tube (131); the small shaft II (16) matches with the hole at the bottom of the rear bracket of the support (12) and the hole at the rear end of the shaft tube (131).

7. A quick roller changing device according to claim 4, characterized in that: It also includes a limiting unit, which includes a fixing plate (18) and two proximity switches (19). The fixing plate (18) is arranged behind the rear bracket of the support (12) and the lower part is connected to the support (12) through a fastener. The left and right proximity switches (19) are arranged on the fixing plate (18).

8. A quick roller changing device according to claim 4, characterized in that: It also includes a positioning pin plate (10), which is arranged in front of the handle (14), and the positioning pins of the positioning pin plate (10) are connected to the holes on the upper part of the handle (14) and the holes on the upper part of the front bracket of the support (12).

9. A quick roller changing device according to claim 4, characterized in that: It also includes a shaft sleeve (112) and a pressing block (113). The shaft sleeve (112) is arranged in a U-shaped groove at the top of the shift fork (132). The front and rear ear shafts (241) cooperate with the shaft sleeve (112). The pressing block (113) is pressed against the end faces of the shaft sleeve (112) and the ear shaft (241) and connected via fasteners.

10. A method for quickly changing rollers, comprising the following steps:

1. Move the quick roller changing device to the position of the slewing support frame assembly in the drum gear coupling, so that the raised guide rail on the upper part of the positioning plate cooperates with the axial groove on the lower part of the slewing support frame, and at the same time connects the U-shaped groove on the top of the fork in the toggle plate with the front and rear ear shafts of the slewing support frame; 2. Pull the handle, which drives the toggle plate to rotate synchronously through small shafts I and II, and the toggle plate drives the slewing support frame assembly and the inner gear sleeve to move axially through the slewing support frame; 3. When the slewing support frame assembly drives the inner gear sleeve to move to the right to a certain stroke, it disengages from the outer gear sleeve I, and quickly replaces the old roller end assembly; 4. After installing the new roller end assembly, the slewing support frame assembly drives the inner gear sleeve to move to the left to a certain stroke and engages with the outer gear sleeve I, and the coupling assembly is now complete.

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