A convenient device for dismounting the end cover of a hob

Abstract

The utility model relates to a convenient hob end cover dismounting device, including end cover dismounting unit and be used for driving end cover dismounting unit operation's hydraulic oil jar, end cover dismounting unit includes shell, fixed cylinder, dog and bottom ring and cylinder pin, the ear plate is set up on shell outer wall, and the hydraulic oil jar stretches out end and ear plate articulates to drive shell circumferential rotation, the fixed cylinder is coaxially arranged in the shell and is open at top and bottom, a plurality of dogs are rotatably connected on the fixed cylinder upper outer wall, and a plurality of dogs are evenly distributed and are located on the same horizontal plane, the fixed cylinder lower part outer sleeve is equipped with the bottom ring, and the bottom ring and cylinder rotatably connect, and the bottom ring upper surface is evenly provided with a plurality of convex teeth in the ring, and the dog downwardly cooperates with the tooth and forms the ratchet structure, the bottom ring lower extreme all is equipped with a plurality of for inserting the cylinder pin of end cover, the utility model solves the problem of time -consuming and labor -intensive in the hob end cover dismounting of prior art, and improves hob overhauling efficiency, saves hob maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of roller cutter disassembly and assembly tools, and in particular to a convenient roller cutter end cap disassembly device. Background Technology

[0002] Cutting cutters are among the most vulnerable cutting tools used in tunnel boring machine (TBM) operations, requiring maintenance and repair after a certain period of use. End cap removal is the first step in inspecting the internal components of the cutting cutter. The end caps, located at both ends of the cutting cutter, protect internal components such as bearings and are secured with threaded connections. After prolonged use, end caps may deform due to impacts, making disassembly difficult.

[0003] Currently, disassembly is mostly performed using an end cap locking fixture and pins. Specifically, four countersunk holes are distributed around the circumference of the end cap, and corresponding through holes are made on the end cap locking fixture, with the through holes and countersunk holes corresponding one-to-one. To disassemble the end cap, first place the end cap locking fixture on the end cap, then pass the four pins through the fixture and the end cap, and finally disassemble the end cap by rotating the locking fixture.

[0004] However, because the end cap and cutter shaft are locked together by a threaded connection, the locking torque is large when disassembling the end cap. When manually connecting the sleeve to the locking fixture and rotating it, multiple people are needed to operate the fixture, which is time-consuming and labor-intensive, extending the hob maintenance time, increasing maintenance costs, and resulting in high labor intensity. There is also a significant safety hazard; if the locking fixture falls during disassembly, it could be dangerous. Summary of the Invention

[0005] To address the problem of time-consuming and labor-intensive manual disassembly of end caps, this invention provides a convenient end cap disassembly device for roller cutters. It applies a ratchet structure to the disassembly of the end caps and uses a hydraulic cylinder as the driving force for the ratchet rotation. This allows for time-saving and labor-saving disassembly of the end caps, improves the efficiency of roller cutter maintenance, and reduces roller cutter repair costs.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A convenient hobbing cutter end cap removal device includes an end cap removal unit and a hydraulic cylinder for driving the end cap removal unit to operate. The end cap removal unit includes a housing, a fixed cylinder, a chuck, a bottom ring, and a cylindrical pin. An ear plate is provided on the outer wall of the housing, and the extended end of the hydraulic cylinder is hinged to the ear plate to drive the housing to rotate circumferentially.

[0008] The fixed cylinder with upper and lower openings is coaxially arranged inside the outer shell. The outer shell and the fixed cylinder rotate together. Multiple claws are rotatably connected to the upper outer wall of the fixed cylinder. The multiple claws are evenly distributed and located on the same horizontal plane. The multiple claws rotate around the fixed cylinder.

[0009] The bottom ring is fitted around the lower part of the fixed cylinder. The bottom ring and the cylinder are rotatably connected. The upper surface of the bottom ring is provided with several protruding teeth in the circumferential direction. The pawl engages with the teeth downward to form a ratchet structure. The lower end of the bottom ring is provided with multiple cylindrical pins for inserting into the end cap. The cylindrical pins facilitate the connection between the bottom ring and the end cap.

[0010] Furthermore, the outer shell is a circular cover with an inverted "U" shaped cross-section, and the ear plates are long strips, with two ear plates arranged vertically at intervals along the thickness direction of the outer shell.

[0011] Furthermore, the extended end of the hydraulic cylinder is located between the two lugs, and a pin passes through the extended end of the hydraulic cylinder and the lugs, with the pin away from the outer casing. The hydraulic cylinder pushes the lugs, causing the outer casing to rotate.

[0012] Furthermore, the fixed cylinder includes a cylindrical tube and a stepped cylindrical rod. Both the upper and lower ends of the cylindrical tube are open to facilitate the insertion of the cutter shaft end therein. The lower end of the cylindrical tube is bent outward to form an outward flange, which facilitates the restriction of the bottom ring from moving downward.

[0013] Multiple stepped cylindrical rods are evenly arranged around the upper part of the cylinder. The stepped cylindrical rods are arranged horizontally and extend outward along the radial direction of the cylinder. One end of the stepped cylindrical rod is clamped to the inner wall of the outer shell to facilitate fixing the entire fixed cylinder to the outer shell. Each stepped cylindrical rod is rotatably connected to a claw to facilitate the claw to rotate on the stepped cylindrical rod.

[0014] Furthermore, the inner wall of the outer shell is provided with multiple grooves in the circumferential direction. Each groove extends from bottom to top along the thickness direction of the outer shell. The small-diameter end of the stepped round rod is engaged in the groove to restrict the relative rotation of the fixed cylinder and the outer shell.

[0015] Furthermore, the inner wall of the bottom ring is a stepped cylindrical surface, the lower end of the bottom ring abuts against the outer flange, and the lower end of the bottom ring extends out of the outer shell; one end of the cylindrical pin is embedded in the bottom ring, and the other end extends out of the bottom ring.

[0016] Furthermore, the teeth on the bottom ring are right-angled triangular structures with the inclined surfaces of the teeth facing upwards; when the teeth are inclined in the forward direction, the bottom ring is a detachable bottom ring; when the teeth are inclined in the reverse direction, the bottom ring is an installable bottom ring. By selecting different bottom ring types, detachable or installable devices for the end cap can be manufactured.

[0017] Furthermore, a rotary encoder is provided in the upper center of the housing. The input axis of the rotary encoder passes downward through the housing and is inserted into the cutter shaft of the hob, which facilitates monitoring the number of turns of the end cap tightening. An electrical box is also provided on the housing.

[0018] A torque sensing unit is provided on the ear plate. The torque sensing unit is close to the outer shell and includes four strain gauges. The four strain gauges are connected in a bridge structure to facilitate monitoring the torque value of the end cover rotation. The output end of the torque sensing unit and the output end of the rotary encoder are respectively connected to the electrical box.

[0019] The beneficial effects of this utility model through the above technical solution are:

[0020] This utility model has a reasonable structural design. The pawl and teeth cooperate to form a ratchet structure. The working principle of the ratchet structure is applied to the disassembly of the cutter end cover. With the assistance of a hydraulic cylinder, the outer shell and the fixed cylinder rotate together, thereby driving the bottom ring and the cylindrical pin to rotate. This drives the end cover to be loosened, realizing the mechanized disassembly of the end cover. This solves the problem of time-consuming and laborious disassembly of the cutter end cover in the prior art, improves the efficiency of cutter maintenance, and saves cutter maintenance costs.

[0021] The ear plate of this invention is welded to the outer shell and hinged to the extended end of the hydraulic cylinder. The outer shell drives a stepped cylindrical rod through internal grooves, which in turn rotates the pawl. The stepped cylindrical rod is welded to the cylinder. Simultaneously, the rotation of the pawl drives the bottom ring to rotate via teeth on the bottom ring. A cylindrical pin is installed below the bottom ring, and this pin is inserted into the holes of both the bottom ring and the end cap, causing the bottom ring to rotate and thus rotating the end cap. It can be seen that the disassembly of the end cap is mainly achieved through the working principle of a ratchet structure.

[0022] This invention allows for the fabrication of a bottom ring for installing end caps by changing the orientation of the teeth. This bottom ring, combined with the outer shell, fixing cylinder, clamps, and hydraulic cylinder, forms a device for installing end caps. During end cap installation, a rotary encoder monitors the number of tightening turns, and a torque sensing unit monitors the torque value in real time, enabling precise control of the tightening process and ensuring the target torque value is achieved. Attached Figure Description

[0023] Figure 1 This is an isometric drawing of a convenient roller end cap disassembly device according to this utility model.

[0024] Figure 2 This is a bottom view of a convenient roller end cap disassembly device according to this utility model.

[0025] Figure 3 This is a schematic diagram showing the before and after disassembly of the outer shell, fixing cylinder, and bottom ring of a convenient roller end cap disassembly device according to this utility model.

[0026] Figure 4 This is a schematic diagram of the outer shell of a convenient roller end cap disassembly device according to this utility model.

[0027] Figure 5 This is a schematic diagram of the bottom ring of a convenient roller end cap disassembly device according to this utility model.

[0028] Figure 6 This is a schematic diagram of the fixing cylinder of a convenient roller end cap disassembly device according to this utility model.

[0029] Figure 7 This is a schematic diagram of the chuck of a convenient roller cutter end cap disassembly device according to this utility model.

[0030] Figure 8 This is a schematic diagram of the installation of the fixing cylinder and bottom ring of a convenient roller cutter end cap disassembly device according to this utility model.

[0031] Figure 9 This is a schematic diagram illustrating the application of a convenient roller end cap disassembly device according to this utility model.

[0032] Figure 10 This is a top view of the rotary encoder installation in Embodiment 2 of the convenient roller end cap disassembly device of this utility model.

[0033] Figure 11 This is a bottom view of the rotary encoder installation in Embodiment 2 of a convenient roller end cap disassembly device of this utility model. In the figure, A represents the input shaft of the rotary encoder.

[0034] The attached diagram is labeled as follows: 1 hob, 2 cutter shaft, 3 end cover, 31 countersunk hole, 4 hydraulic cylinder, 5 end cover removal unit, 6 housing, 7 fixing cylinder, 71 cylindrical cylinder, 72 stepped cylindrical rod, 8 chuck, 81 circular sleeve section, 82 chuck block section, 9 bottom ring, 10 cylindrical pin, 11 ear plate, 12 pin shaft, 13 outward flange, 14 groove, 15 tooth, 16 rotary encoder, 17 torque sensing unit, 18 electrical box. Detailed Implementation

[0035] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0036] Example 1:

[0037] like Figures 1-9 As shown, a convenient end cap removal device for a roller cutter includes an end cap removal unit 5 and a hydraulic cylinder 4 for driving the end cap removal unit 5 to operate. When the hydraulic cylinder 4 is running, it can drive the end cap removal unit 5 to rotate. The end cap removal unit 5 is fastened to the end cap 3 of the roller cutter 1 and connected to it, thereby enabling the end cap 3 to be unscrewed and the end cap 3 to be removed.

[0038] In this embodiment, the end cap disassembly unit 5 includes a housing 6, a fixing cylinder 7, a claw 8, a bottom ring 9, and a cylindrical pin 10. The housing 6 is a circular cap with an inverted "U"-shaped cross-section. The housing 6 is connected to a hydraulic cylinder 4, and the rotation of the housing 6 is controlled by the hydraulic cylinder 4. When the two are connected, ear plates 11 are provided on the outer wall of the housing 6. The ear plates 11 are welded and fixed to the housing 6. The ear plates 11 are long strips that extend radially outward along the housing 6. There are two ear plates 11, which are arranged vertically at intervals along the thickness direction of the housing 6.

[0039] The extended end of the hydraulic cylinder 4 is hinged to the ear plate 11. Specifically, the extended end of the hydraulic cylinder 4 is located between the two ear plates 11, and a pin 12 passes through the extended end of the hydraulic cylinder 4 and the ear plate 11. The pin 12 is installed away from the outer casing 6. The ear plate 11 is hinged to the extended end of the hydraulic cylinder 4 by the pin 12, and the operation of the hydraulic cylinder 4 can drive the outer casing 6 to rotate circumferentially.

[0040] A fixed cylinder 7 with open top and bottom is provided inside the outer shell 6. The fixed cylinder 7 and the outer shell 6 are arranged coaxially inside and out. The fixed cylinder 7 includes a cylindrical cylinder 71 and a stepped cylindrical rod 72. Both the upper and lower ends of the cylindrical cylinder 71 are open. The upper end of the cylindrical cylinder 71 is tightly pressed against the outer shell 6, and the lower end of the cylindrical cylinder 71 extends out of the outer shell 6. The lower end of the cylindrical cylinder 71 is bent outward horizontally to form an outward flange 13, which is equivalent to enlarging the outer diameter of the cylindrical cylinder 71.

[0041] Four stepped cylindrical rods 72 are evenly arranged around the upper circumference of the cylinder 71. The stepped cylindrical rods 72 are horizontally arranged and extend radially outward along the cylinder 71. Each stepped cylindrical rod 72 includes an integrally formed large-diameter section and a small-diameter section. One end of the stepped cylindrical rod 72 is snapped onto the inner wall of the outer shell 6, that is, the entire fixed cylinder 7 is installed and fixed inside the outer shell 6 by snapping.

[0042] To facilitate the engagement of the stepped cylindrical rod 72, four grooves 14 are provided circumferentially on the inner wall of the outer casing 6. Each groove 14 extends from bottom to top along the thickness direction of the outer casing 6, and each groove 14 corresponds to a stepped cylindrical rod 72. The large-diameter section of the stepped cylindrical rod 72 is connected and fixed to the outer wall of the cylinder 71, and the small-diameter end of the stepped cylindrical rod 72 is engaged in the groove 14, thereby installing the entire fixed cylinder 7 into the outer casing 6. In this way, the outer casing 6 can drive the fixed cylinder 7 to rotate together.

[0043] Four jaws 8 are rotatably connected to the upper outer wall of the fixed cylinder 7. The four jaws 8 are evenly distributed and located on the same horizontal plane. During installation, one jaw 8 is rotatably connected to each stepped round rod 72, and the jaw 8 is located on the small diameter section of the stepped round rod 72. The jaw 8 includes an integrally formed circular sleeve section 81 and a locking block section 82. The circular sleeve section 81 is fitted onto the small diameter section of the stepped round rod 72, and the entire jaw 8 can rotate around the small diameter section.

[0044] A bottom ring 9 is fitted over the lower part of the fixed cylinder 7, and the bottom ring 9 is rotatably connected to the cylinder 71. During installation, the bottom ring 9 is first fitted onto the fixed cylinder 7, and then a stepped cylindrical rod 72 is welded to the upper part of the fixed cylinder 7. However, this makes the bottom ring 9 difficult to disassemble. Alternatively, the stepped cylindrical rod 72 can be installed with the fixed cylinder 71 using a threaded connection, which would facilitate the assembly and disassembly of the fixed cylinder 71 and the bottom ring 9.

[0045] The inner wall of the bottom ring 9 is a stepped cylindrical surface. The lower end of the bottom ring 9 extends out of the outer shell 6 and rests against the outer flange 13 to prevent the bottom ring 9 from moving downward. The lower end face of the bottom ring 9 is flush with the lower end face of the fixed cylinder 7. The outer wall of the bottom ring 9 is a cylindrical surface and fits against the inner wall of the outer shell 6, thus allowing the bottom ring 9 to rotate between the outer shell 6 and the fixed cylinder 7.

[0046] To drive the bottom ring 9 to rotate, several protruding teeth 15 are provided circumferentially on the upper surface of the bottom ring 9, making the bottom ring 9 with the teeth 15 a face gear. The teeth 15 on the bottom ring 9 have a right-angled triangular structure, with the inclined surface of the teeth 15 facing upwards and the long right-angled surface of the teeth 15 facing downwards, fitting and fixed to the upper plane of the bottom ring 9. The pawl 8 engages downwards with the teeth 15 to form a ratchet structure, that is, the pawl segment 82 engages with several teeth 15 to form a ratchet structure that can be driven in one direction.

[0047] Note: In this embodiment, the tooth 15 is tilted in the positive direction, and the bottom ring 9 with the tooth 15 is a disassembly bottom ring 9. By installing the disassembly bottom ring 9 inside the outer shell 6, the entire device can be used to disassemble the end cap 3.

[0048] Four cylindrical pins 10 are provided at the lower end of the bottom ring 9 for inserting into the end cap 3. One end of the cylindrical pin 10 is embedded in the bottom ring 9, and the other end extends out of the bottom ring 9. The end cap 3 of the hob 1 has four countersunk holes 31, and the countersunk holes 31 correspond one-to-one with the cylindrical pins 10. When the cylindrical pins 10 are inserted into the countersunk holes 31, the bottom ring 9 and the end cap 3 can be connected.

[0049] The principle of this utility model is as follows: The hobbing cutter 1 is fixed to the disassembly platform, and then the fixing cylinder 7 is fastened to the end of the hobbing cutter 1. At this time, the end of the cutter shaft 2 of the hobbing cutter 1 extends into the cylinder 71, and the cylindrical pin 10 is inserted into the countersunk hole 31. The bottom ring 9 and the end cover 3 are then connected through the cylindrical pin 10. Bolts are used to pass through the end of the cylinder of the hydraulic cylinder 4 and connect it to the disassembly platform, thus fixing the hydraulic cylinder 4. However, the hydraulic cylinder 4 is allowed to swing around the bolt as a center and can also move up and down under the guidance of the bolt. Essentially, the hydraulic cylinder 4 is hinged to the disassembly platform and can swing and move up and down on the disassembly platform.

[0050] Hydraulic cylinder 4 is connected to a hydraulic pump via an oil pipe. The hydraulic pump provides power to hydraulic cylinder 4. A solenoid valve is installed on the oil pipe to control the running direction of hydraulic cylinder 4. Hydraulic cylinder 4 is manually controlled to perform linear reciprocating motion. Because the teeth 15 are tilted in the positive direction, when hydraulic cylinder 4 extends, it drives the outer shell 6 and the fixed cylinder 7 to rotate together. At this time, the pawl 8 abuts against the teeth 15, which in turn pushes the bottom ring 9 to rotate as well, and the end cover 3 can be loosened.

[0051] When the hydraulic cylinder 4 retracts, the outer casing 6 and the fixed cylinder 7 reverse together. At this time, the pawl 8 retracts along the inclined plane of the teeth 15 without rotating the bottom ring 9. This working principle is similar to that of a ratchet mechanism. Thus, by reciprocating linearly with the hydraulic cylinder 4, the end cover 3 can be unscrewed, achieving the disassembly of the end cover 3.

[0052] Example 2:

[0053] This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that, in addition to being able to disassemble the end cap 3 by installing and removing the bottom ring 9, a new bottom ring 9 can be made by changing the direction of the teeth 15, and the end cap 3 can be installed using this bottom ring 9. Specifically, when the teeth 15 are tilted in the opposite direction, the bottom ring 9 with these teeth 15 is the installation bottom ring 9, which is not shown in the figure.

[0054] In this way, based on the fabrication of the mounting base ring 9, it is assembled with the new fixing cylinder 7, the claw 8, the outer shell 6, and the hydraulic cylinder 4, thus obtaining a device for mounting the end cap 3. The end cap 3 can be disassembled using the disassembly device in Embodiment 1, and the end cap 3 can be installed using the mounting device in this embodiment. The difference between the two devices lies in the different directions of the teeth 15 on the base ring 9.

[0055] The installation process for end cap 3 is as follows: Due to the reverse tilt of teeth 15, when hydraulic cylinder 4 extends, it drives housing 6 and fixed cylinder 7 to rotate together. At this time, pawl 8 retracts along the inclined surface of teeth 15 without rotating bottom ring 9. When hydraulic cylinder 4 retracts, housing 6 and fixed cylinder 7 reverse together. At this time, pawl 8 abuts against teeth 15, which in turn pushes bottom ring 9 to rotate, thus tightening end cap 3. In this way, by the linear reciprocating motion of hydraulic cylinder 4, end cap 3 can be tightened, achieving the installation of end cap 3.

[0056] During the installation of the end cap 3, the number of rotations of the end cap 3 affects the torque of the hob 1, making it impossible to precisely control the tightening amount of the end cap 3 manually. Therefore, a rotary encoder 16 is installed at the center of the upper part of the housing 6. The input axis of the rotary encoder 16 passes downward through the housing 6 and is inserted into the cutter shaft 2 of the hob 1. The rotary encoder 16 monitors the complete number of rotations and partial number of rotations of the end cap 3 through the relative rotation of the housing 6 and the cutter shaft 2.

[0057] Meanwhile, a torque sensing unit 17 is provided on the ear plate 11. The torque sensing unit 17 includes four strain gauges, which are attached to the end of the ear plate 11 near the outer shell 6. The four strain gauges are connected in a bridge structure. Specifically, the torque sensing unit 17 monitors the torque value during the tightening process of the end cover 3 in real time. Multiple strain gauges are used to form a bridge as sensing elements, which are attached to the deformation-sensitive parts of the ear plate 11. The signal processing process is as follows: When torque is applied, the ear plate 11 undergoes slight elastic deformation, causing a change in the resistance of the strain gauges. The bridge outputs a weak voltage signal proportional to the torque. After the amplifier amplifies the voltage signal, it is converted into a digital signal by an analog-to-digital converter, which can then be displayed on the screen.

[0058] An electrical box 18 is also provided on the outer casing 6. The output terminals of the torque sensing unit 17 and the rotary encoder 16 are respectively connected to the electrical box 18. The electrical box 18 integrates a PLC controller, a display screen, operation buttons, and a lithium battery, with the lithium battery powering all electrical components. The output terminals of the operation buttons are connected to the input terminals of the PLC controller, and the operation buttons are used to input control commands. The display screen is communicatively connected to the PLC controller, and the display screen is used to display the torque value and the number of rotations. By manually controlling the installation of the end cover 3 by referring to the torque value and the number of rotations, the tightening amount of the end cover 3 can be ensured to meet the requirements.

[0059] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A convenient device for disassembling a roller cutter end cap, characterized in that, It includes an end cover dismounting unit (5) and a hydraulic cylinder (4) for driving the end cover dismounting unit (5) to operate. The end cover dismounting unit (5) includes a housing (6), a fixed cylinder (7), a claw (8), a bottom ring (9), and a cylindrical pin (10). An ear plate (11) is provided on the outer wall of the housing (6). The extending end of the hydraulic cylinder (4) is hinged to the ear plate (11) to drive the housing (6) to rotate circumferentially. The fixed cylinder (7) with upper and lower openings is coaxially arranged inside the housing (6). A plurality of the claws (8) are rotatably connected to the outer wall of the upper part of the fixed cylinder (7). The plurality of claws (8) are evenly distributed and located on the same horizontal plane. The bottom ring (9) is sleeved outside the lower part of the fixed cylinder (7). The bottom ring (9) is rotatably connected to the cylinder (71). A plurality of protruding teeth (15) are circumferentially arranged on the upper surface of the bottom ring (9). The claws (8) cooperate with the teeth (15) downward to form a ratchet structure. A plurality of the cylindrical pins (10) for inserting into the end cover (3) are provided at the lower end of the bottom ring (9).

2. The convenient roller cutter end cap disassembly device according to claim 1, characterized in that, The housing (6) is a circular cover body with a cross-section in an inverted "U" shape. The ear plate (11) is a long strip plate. The number of ear plates (11) is two, and the two ear plates (11) are arranged at intervals up and down in the thickness direction of the housing (6).

3. The convenient roller cutter end cap disassembly device according to claim 2, characterized in that, The extending end of the hydraulic cylinder (4) is located between the two ear plates (11). A pin shaft (12) is arranged between the extending end of the hydraulic cylinder (4) and the ear plate (11), and the pin shaft (12) is far away from the housing (6).

4. The convenient roller cutter end cap disassembly device according to claim 1, characterized in that, The fixed cylinder (7) includes a cylinder (71) and a stepped round rod (72). The upper and lower ends of the cylinder (71) are both open, and the lower end of the cylinder (71) is bent outward to form an outward flange (13). A plurality of the stepped round rods (72) are evenly arranged around the upper part of the cylinder (71). The stepped round rods (72) are horizontally arranged and extend radially outward along the cylinder (71). One end of the stepped round rod (72) is clamped on the inner wall of the housing (6), and one claw (8) is rotatably connected to each stepped round rod (72).

5. A convenient roller cutter end cap disassembly device according to claim 4, characterized in that, A plurality of grooves (14) are circumferentially arranged on the inner wall of the housing (6). Each groove (14) extends along the thickness direction of the housing (6) from bottom to top, and the end of the small-diameter section of the stepped round rod (72) is clamped into the groove (14).

6. A convenient roller cutter end cap disassembly device according to claim 4, characterized in that, The inner wall of the bottom ring (9) is a stepped cylindrical surface. The lower end of the bottom ring (9) abuts against the outward flange (13), and the lower end of the bottom ring (9) extends out of the housing (6). One end of the cylindrical pin (10) is embedded in the bottom ring (9), and the other end extends out of the bottom ring (9).

7. A convenient roller cutter end cap disassembly device according to claim 1, characterized in that, The teeth (15) on the bottom ring (9) are in a right triangle structure, and the inclined surface of the teeth (15) faces upward. When the teeth (15) are inclined forward, the bottom ring (9) is for dismounting; when the teeth (15) are inclined backward, the bottom ring (9) is for installation.

8. A convenient roller cutter end cap disassembly device according to claim 7, characterized in that, A rotary encoder (16) is arranged in the middle above the housing (6). The input shaft of the rotary encoder (16) passes through the housing (6) downward and is inserted into the tool shaft (2) of the hob (1). An electrical box (18) is also arranged on the housing (6). A torque sensing unit (17) is provided on the ear plate (11). The torque sensing unit (17) is close to the outer shell (6). The torque sensing unit (17) includes four strain gauges. The four strain gauges are connected in a bridge structure. The output end of the torque sensing unit (17) and the output end of the rotary encoder (16) are respectively connected to the electrical box (18).

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