Back-mounted hob cutter holder and disassembly and assembly method

Abstract

The present invention discloses a back-mounted hob cutter holder and a disassembly method. The back-mounted hob cutter holder comprises: a cutter holder plate, two facing surfaces of the cutter holder plates are provided with mounting wall grooves, and the lower ends of the mounting wall grooves are provided with advance and retreat wall grooves; a C-shaped block, the C-shaped block having an installed state and a disassembled state; a hob cutter having square shafts at both ends, the square shafts being embedded in an open groove; a wedge block, which is embedded in the open groove and located at the opening of the open groove; and an arched pressure block, which is detachably mounted on the cutter holder plate to press and fix the C-shaped block, the inner side of the arched pressure block being in contact with the outer side of the wedge block to limit and fix the square shaft. When disassembling the present invention, it is only necessary to move the C-shaped block to the disassembly state, and then the wedge block and the square shaft can be pulled out from the open groove and the advance and retreat wall groove. Disassembly is simple and convenient, thereby improving the efficiency of hob cutter replacement and reducing the construction time when the hob cutter needs to be replaced due to wear or damage.

Description

Technical Field

[0001] The present invention relates to the technical field of shield machines, in particular to a back-mounted hob cutter seat and a disassembly and assembly method thereof. Background Art

[0002] A shield machine is a large-scale mechanical equipment used in underground tunnel construction. The cutter is a key component of the shield machine's cutterhead for cutting soil and rock. Its performance directly affects the shield machine's excavation efficiency and construction safety. However, the existing technology for removing the cutter has some shortcomings. For example, when the cutter is severely worn or unevenly worn, it is difficult to remove the cutter. Disassembling the cutter of a shield machine is not only complicated but also time-consuming. In some extreme geological conditions, such as isolated rock clusters, the cutter may be damaged and need to be frequently replaced, which further increases the difficulty and cost of construction. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a back-mounted hob cutter holder and a disassembly method thereof.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A back-mounted hob cutter seat comprises: a cutter seat plate, two of which are arranged at intervals, and the facing surfaces of the two cutter seat plates are provided with mounting wall grooves, and the lower ends of the mounting wall grooves are provided with advance and retreat wall grooves; a C-shaped block, the C-shaped block having an installed state and a disassembled state, the C-shaped block is embedded in the mounting wall groove, and can be rotated along the peripheral wall of the mounting wall groove to realize the switching between the installed state and the disassembled state, and the peripheral wall of the C-shaped block has an open groove; the open groove of the C-shaped block in the installed state is staggered with the advance and retreat wall groove, and the open groove of the C-shaped block in the disassembled state is aligned with the advance and retreat wall groove; a hob with square shafts at both ends, the square shafts embedded in the open grooves; a wedge block embedded in the open groove and located at the opening of the open groove; an arched pressure block that can be detachably installed on the cutter seat plate to press and fix the C-shaped block, and the inner side of the arched pressure block is in contact with the outer side of the wedge block to limit and fix the opposite shaft.

[0006] Furthermore, the bottom wall of the open groove has a first through-hole that passes through the C-shaped block, the square shaft is provided with a second through-hole aligned with the first through-hole, and the wedge block is provided with a third through-hole aligned with the second through-hole; the arched pressure block is elastically and movably installed with a limiting column, and when the limiting column is embedded in the third through-hole, the C-shaped block is in an installed state, and the lower end of the first through-hole is connected to the advance and retreat wall groove; when the limiting column is embedded in the first through-hole, the C-shaped block is in a disassembled state, and the third through-hole is connected to the advance and retreat wall groove, and the limiting column can withdraw from the first through-hole or the third through-hole under the action of external force.

[0007] Furthermore, the arched pressure block is provided with a stepped hole running through it from top to bottom, and the stepped hole includes a threaded hole, a guide hole and an extension hole whose diameters decrease successively from top to bottom; a threaded cover is installed on the threaded hole, and the limiting column includes a guide shaft and a limiting shaft, and the guide shaft is adapted to and slidably installed in the guide hole, and the limiting shaft is movably provided in the extension hole so as to be able to be embedded in the first through hole or the third through hole.

[0008] Furthermore, a positioning protrusion is provided at the bottom of the threaded cover, and a downwardly extending accommodating groove is provided on the upper end surface of the guide shaft. A first compression spring is installed between the guide shaft and the threaded cover, and the upper end of the first compression spring is sleeved on the positioning protrusion, and the lower end is embedded in the accommodating groove; when the guide shaft and the threaded cover are against each other, the limit shaft withdraws from the first perforation or the third perforation.

[0009] Furthermore, it also includes a quick-release structure, which can be detachably installed in the advance and retreat wall groove and is used to be transmission-connected with the C-shaped block to drive the C-shaped block to rotate along the peripheral wall of the installation wall groove.

[0010] Furthermore, the quick-release structure includes a box body, in which a driving wheel and a driven wheel are rotatably installed, a first extension shaft extending out of the box body is provided at the center of the driving wheel, an outer end of the first extension shaft is connected to a rotating handle, a second extension shaft extending out of the box body is provided at the center of the driven wheel, an outer end of the second extension shaft is connected to an output wheel, and the output wheel is transmission-connected to the outer peripheral wall of the C-block and the outer peripheral wall of the wedge block.

[0011] Furthermore, a circle of convex teeth is provided on the outer periphery of the output wheel, and the outer peripheral wall of the C-shaped block and the outer peripheral wall of the wedge block are respectively provided with a first sunken annular groove and a second sunken annular groove, and the first sunken annular groove and the second sunken annular groove are respectively provided with a first tooth groove and a second tooth groove for engaging with the convex teeth.

[0012] Furthermore, a positioning column is elastically and movably installed on the side wall of the box body, and a positioning hole is provided on the side wall of the advance and retreat wall groove. The positioning column can be elastically inserted into the positioning hole to achieve the position fixation of the box body.

[0013] Furthermore, the side wall of the box body is provided with a guide groove, the guide groove is provided with a through hole connected to the inner cavity of the box body, the bottom of the guide groove is provided with an avoidance notch, the width of the avoidance notch is smaller than the diameter of the guide groove, the positioning column is slidably installed in the guide groove, the inner end of the positioning column is provided with a through column passing through the through hole, the through column extends to the inner cavity of the box body and is connected to a limiting nut, the peripheral wall of the positioning column is provided with a toggle column, the toggle column moves in the avoidance notch and the lower end extends out of the avoidance notch; a second compression spring is sleeved on the through column, and the second compression spring is located between the positioning column and the end wall of the guide groove.

[0014] The present invention also proposes a back-mounted hob cutter seat disassembly and assembly method, comprising the following steps: S1, loosening the arched pressure block from the C-shaped block in the installed state; S2, inserting the operating rod into the first perforation, the second perforation and the third perforation in sequence from the advance and retreat wall groove, and the operating rod pushes the limit column upward until the limit column exits the third perforation, and then rotates the operating rod to drive the C-shaped block to rotate along the peripheral wall of the installation wall groove, so that the limit column and the third perforation are staggered, and the operating rod is removed; S3, rotating the C-shaped block so that the C-shaped block switches to the disassembly state, and then removes the wedge block, and takes the wedge block out of the advance and retreat wall groove; S4, pulling the square shaft out of the opening groove and the advance and retreat wall groove in sequence to complete the disassembly of the hob.

[0015] The present invention has the following beneficial effects:

[0016] The switching between the installed and disassembled states of the C-block makes the hob disassembly process simpler and faster. The C-block can rotate along the peripheral wall of the installation wall groove to switch from the installed state to the disassembled state, thereby simplifying the hob disassembly operation. Due to the staggered and aligned design of the opening slot and the advance and retreat wall groove of the C-block, the square shaft of the hob can be more easily inserted into and out of the opening slot, thereby improving the efficiency of hob replacement and reducing the construction time when the hob needs to be replaced due to wear or damage. The design of the arched pressure block enables the C-block to be pressed and fixed, ensuring the stability and reliability of the hob during operation. The use of the wedge block and the arched pressure block effectively limits and fixes the square shaft. During disassembly, you only need to move the C-block to the disassembly state to pull out the wedge block and square shaft from the opening slot and the advance and retreat wall groove. Disassembly is simple and convenient.

[0017] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the decomposed state structure;

[0021] Figure 3 It is a partial structural decomposition schematic diagram of the present invention;

[0022] Figure 4 It is a structural diagram of the knife seat plate;

[0023] Figure 5It is a structural diagram of the quick-disassembly structure;

[0024] Figure 6 It is a cross-sectional view of the installed state;

[0025] Figure 7 yes Figure 6 A magnified view of point A;

[0026] Figure 8 It is a cross-sectional view of a state during the disassembly process;

[0027] Figure 9 This is a cross-sectional view of the quick-release structure after installation;

[0028] Figure 10 yes Figure 9 Magnified view of point B.

[0029] Legend:

[0030] The knife base plate 100, the mounting wall groove 110, the advance and retreat wall groove 120, and the positioning hole 121;

[0031] C-shaped block 200, open groove 210, groove bottom wall 211, first through hole 212, first sunken annular groove 220, first tooth groove 221;

[0032] Hob 300, square shaft 310, second through hole 311;

[0033] Wedge 400, third through-hole 410, second sunken annular groove 420, second tooth groove 421;

[0034] Arched pressing block 500, threaded hole 510, guide hole 511, extension hole 512, threaded cover 520, positioning protrusion 521, first compression spring 530;

[0035] Limiting column 600, guide shaft 610, receiving groove 611, limiting shaft 620;

[0036] Quick-release structure 700, box body 710, guide groove 711, through hole 712, avoidance gap 713, driving wheel 720, first extension shaft 721, rotating handle 722, driven wheel 730, second extension shaft 731, output wheel 732, protruding teeth 733;

[0037] Positioning column 800, through column 810, limiting nut 811, toggle column 820, second compression spring 830;

[0038] Operating lever 900. DETAILED DESCRIPTION

[0039] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] Please refer to Figure 1 and Figure 2 In a preferred embodiment of the present invention, a back-mounted hob cutter seat includes a cutter seat plate 100, a C-shaped block 200, a hob 300, a wedge block 400 and an arched pressure block 500.

[0044] Two knife seat plates 100 are arranged at intervals, and facing surfaces of the two knife seat plates 100 are provided with mounting wall grooves 110 , and the lower ends of the mounting wall grooves 110 are provided with advance and retreat wall grooves 120 .

[0045] The C-shaped block 200 has an installed state and a disassembled state. The C-shaped block 200 is embedded in the installation wall groove 110. The C-shaped block 200 can rotate along the peripheral wall of the installation wall groove 110 to achieve switching between the installed state and the disassembled state. Specifically, the contour of the peripheral wall of the installation wall groove 110 is semicircular, and part of the contour of the peripheral wall of the C-shaped block 200 is an arc, so the C-shaped block 200 can rotate along the peripheral wall of the installation wall groove 110. The C-shaped block 200 has an open groove 210 on its peripheral wall; the hob 300 has square shafts 310 at both ends, and the square shafts 310 are embedded in the open groove 210; the wedge block 400 is embedded in the open groove and is located at the opening of the open groove 210; the open groove 210 of the C-shaped block 200 in the installed state is staggered with the advance and retreat wall groove 120, so that the wedge block 400 and the square shaft 310 cannot exit the open groove 210; the open groove 210 of the C-shaped block 200 in the disassembled state is aligned with the advance and retreat wall groove 120, so that when in the disassembled state, the wedge block 400 and the square shaft 310 can be detached from the open groove 210 in turn and pulled out from the advance and retreat wall groove 120 to complete the disassembly.

[0046] The arched pressure block 500 can be removably mounted on the toolholder plate 100 to compress and secure the C-shaped block 200. The arched pressure block 500 and toolholder plate 100 may be provided with corresponding holes for fastener connection. The inner side of the arched pressure block 500 abuts against the outer side of the wedge block 400, limiting the space for the wedge block 400 to move outward. This allows the wedge block 400 to be clamped and secured between the square shaft 310 and the arched pressure block 500, while also limiting the position of the square shaft 310.

[0047] The switching between the installed and disassembled states of the C-block 200 makes the disassembly process of the cutter hob 300 simpler and faster. The C-block 200 can rotate along the peripheral wall of the mounting wall groove 110 to switch from the installed state to the disassembled state, thereby simplifying the cutter hob disassembly operation. Due to the staggered and aligned design of the opening groove 210 of the C-block 200 and the advance and retreat wall groove 120, the square shaft 310 of the cutter hob 300 can be more easily inserted into and out of the opening groove 210, thereby improving the efficiency of cutter hob replacement and reducing the construction time when the cutter hob needs to be replaced due to wear or damage. The design of the arched pressure block 500 allows the C-block 200 to be pressed and fixed, ensuring the stability and reliability of the cutter hob 300 during operation. The use of the wedge block 400 in conjunction with the arched pressure block 500 effectively limits and fixes the square shaft 310. During disassembly, it is only necessary to move the C-shaped block 200 to the disassembly state, and then the wedge block 400 and the square shaft 310 can be pulled out from the opening slot 210 and the advance and retreat wall slot 120 , making disassembly simple and convenient.

[0048] Reference Figure 2 、 Figure 3 and Figure 6In some embodiments of the present invention, the bottom wall 211 of the open groove 210 has a first through-hole 212 that passes through the C-shaped block 200, the square shaft 310 is provided with a second through-hole 311 aligned with the first through-hole 212, and the wedge block 400 is provided with a third through-hole 410 aligned with the second through-hole 311; the arched pressure block 500 is elastically and movably installed with a limiting column 600, and when the limiting column 600 is embedded in the third through-hole 410, the C-shaped block 200 is in an installed state, and the lower end of the first through-hole 212 is connected to the advance and retreat wall groove 120; when the limiting column 600 is embedded in the first through-hole 212, the C-shaped block 200 is in a disassembled state, and the third through-hole 410 is connected to the advance and retreat wall groove 120, and the limiting column 600 can withdraw from the first through-hole 212 or the third through-hole 410 under the action of external force. The limiting post 600 is thus used to limit the position of the C-shaped block 200 in the installed state and the removed state, so that the position is accurate during installation and stable during removal, which facilitates removal. When it is necessary to switch states, the operating rod 900 only needs to be inserted into the first through-hole 212, the second through-hole 311, and the third through-hole 410 from the advance and retreat wall groove 120. The operating rod 900 pushes the limiting post 600 upward until the limiting post 600 exits the third through-hole 410 or the first through-hole 212. The operating rod 900 is then rotated to drive the C-shaped block 200 to rotate along the peripheral wall of the installation wall groove 110, so that the limiting post 600 is offset from the third through-hole 410 or the first through-hole 212, releasing the limiting lock of the limiting post 600 on the C-shaped block 200. The C-shaped block 200 can then be freely rotated to achieve the state switching of the C-shaped block 200.

[0049] Reference Figure 7 In a further embodiment of the present invention, the arched pressure block 500 is provided with a stepped hole extending vertically therethrough. The stepped hole includes a threaded hole 510, a guide hole 511, and an extension hole 512, the diameters of which decrease from top to bottom. A threaded cover 520 is mounted on the threaded hole 510. The limiting column 600 includes a guide shaft 610 and a limiting shaft 620. The guide shaft 610 is adapted to and slidably mounted in the guide hole 511. The limiting shaft 620 is movably mounted in the extension hole 512 to be inserted into the first through-hole 212 or the third through-hole 410. The diameter of the guide hole 511 is larger than that of the extension hole 512, that is, the diameter of the guide shaft 610 is larger than that of the extension hole 512, and therefore the guide shaft 610 will not enter the extension hole 512, thereby limiting the travel of the limiting shaft 620 extending out of the extension hole 512 and preventing the limiting column 600 from completely disengaging from the extension hole 512.

[0050] Reference Figure 7 and Figure 8In a further embodiment of the present invention, a positioning protrusion 521 is provided at the bottom of the threaded cover 520, and a downwardly extending receiving groove 611 is provided on the upper end surface of the guide shaft 610. A first compression spring 530 is installed between the guide shaft 610 and the threaded cover 520. The upper end of the first compression spring 530 is sleeved on the positioning protrusion 521, thereby positioning and limiting the first compression spring 530. When the guide shaft 610 and the threaded cover 520 abut against each other, the limiting shaft 620 exits the first through-hole 212 or the third through-hole 410. The lower end of the first compression spring 530 is embedded in the receiving groove 611, thereby providing sufficient space for the first compression spring 530 to accommodate the first compression spring 530. Even when the guide shaft 610 and the threaded cover 520 abut against each other, the receiving groove 611 is still available to accommodate the first compression spring 530. The first compression spring 530 is used to provide an elastic force to the limiting post 600, so that when there is no other external force, the limiting post 600 will automatically insert into the third through-hole 410 or the first through-hole 212 and will remain inserted into the third through-hole 410 or the first through-hole 212, making the limiting position more stable. For example, when the C-shaped block 200 is switched to the disassembly state, the limiting post 600 is aligned with the first through-hole 212. Under the action of the first compression spring 530, the limiting post 600 is inserted into the first through-hole 212, so that the C-shaped block 200 is stabilized in the disassembly state. Subsequently, the wedge block 400 and the hob 300 are disassembled. During disassembly, the C-shaped block 200 will not rotate arbitrarily, so that the open groove 210 is stably aligned with the advance and retreat wall groove 120, facilitating the disassembly of the wedge block 400 and the hob 300. The wedge block 400 and the square shaft 310 can be connected and fixed by fasteners.

[0051] Reference Figure 3 In some embodiments of the present invention, a quick-release structure 700 is further included. The quick-release structure 700 can be detachably installed in the advance and retreat wall groove 120 and is used to be transmission-connected to the C-shaped block 200 to drive the C-shaped block 200 to rotate along the peripheral wall of the installation wall groove 110, thereby facilitating disassembly.

[0052] Reference Figure 5 and Figure 9In some embodiments of the present invention, the quick-release structure 700 includes a housing 710, within which a driving wheel 720 and a driven wheel 730 are rotatably mounted. The driving wheel 720 and the driven wheel 730 are connected in a transmission manner, specifically via a transmission belt. A first extension shaft 721 extending from the housing 710 is provided at the center of the driving wheel 720. A rotation handle 722 is connected to the outer end of the first extension shaft 721. A second extension shaft 731 extending from the housing 710 is provided at the center of the driven wheel 730. An output wheel 732 is connected to the outer end of the second extension shaft 731. The output wheel 732 is transmission-connected to the outer circumferential wall of the C-block 200 and the outer circumferential wall of the wedge block 400. The outer circumferential wall of the C-block 200 and the outer circumferential wall of the wedge block 400 form a complete circumferential surface, thereby being transmission-connected to the output wheel 732. The driving wheel 720 and the driven wheel 730 are used to drive the driven wheel 730 and the output wheel 732 to rotate, and the operating space is moved downward as much as possible during operation, so that the operating space is larger, the structural obstacles are reduced, and the operation is more convenient.

[0053] Reference Figure 5 and Figure 9 In a further embodiment of the present invention, a circle of convex teeth 733 is provided on the outer circumference of the output wheel 732. A first sunken annular groove 220 and a second sunken annular groove 420 are respectively provided on the outer circumferential wall of the C-block 200 and the outer circumferential wall of the wedge block 400. The first sunken annular groove 220 and the second sunken annular groove 420 are respectively provided with a first tooth groove 221 and a second tooth groove 421 for engaging with the convex teeth 733. The first tooth groove 221 and the second tooth groove 421 form a complete circle of tooth grooves for engaging with the convex teeth 733, thereby achieving continuous transmission. The first sunken annular groove 220 and the second sunken annular groove 420 prevent the uneven first tooth groove 221 and the second tooth groove 421 from contacting the external structure, thereby avoiding causing large resistance and structural wear to the rotation of the C-block 200 and the wedge block 400.

[0054] Reference Figure 4 、 Figure 9 and Figure 10 In a further embodiment of the present invention, positioning posts 800 are elastically and movably mounted on the sidewalls of the housing 710. Positioning holes 121 are provided on the sidewalls of the advance / retreat wall groove 120. The positioning posts 800 can be elastically inserted into the positioning holes 121 to secure the housing 710. This facilitates installation and removal via the movable positioning posts 800. Therefore, when disassembly is required, the quick-release structure 700 can be temporarily installed and then removed after use to facilitate removal of the square shaft 310.

[0055] Reference Figure 10In a further embodiment of the present invention, a guide groove 711 is provided on the side wall of the box body 710. A through hole 712 is provided in the guide groove 711, which communicates with the inner cavity of the box body 710. A relief notch 713 is provided at the bottom of the guide groove 711. The positioning post 800 is slidably mounted in the guide groove 711. The diameter of the positioning post 800 matches the diameter of the guide groove 711. The width of the relief notch 713 is smaller than the diameter of the guide groove 711, thereby preventing the positioning post 800 from escaping from the relief notch 713. A through post 810 is provided at the inner end of the positioning post 800, which passes through the through hole 712. A toggle post 820 is provided on the peripheral wall of the positioning post 800. The toggle post 820 moves in the relief notch 713, and the lower end extends out of the relief notch 713, thereby facilitating manual toggle of the toggle post 820 and facilitating the removal of the positioning post 800 from the positioning hole 121 when the quick-release structure 700 is disassembled. A second compression spring 830 is sleeved on the through-post 810. This second compression spring 830 is positioned between the positioning post 800 and the end wall of the guide slot 711, thereby elastically pushing the positioning post 800 into the positioning hole 121. Once inserted into the positioning hole 121, the positioning post 800 remains in position, ensuring stable installation. The through-post 810 extends into the interior of the housing 710 and is connected to a limit nut 811. The limit nut 811 has a larger profile than the through-hole 712, preventing the positioning post 800 from disengaging from the guide slot 711 under the action of the second compression spring 830.

[0056] The present invention also provides a method for disassembling and assembling a back-mounted hob cutter holder, comprising steps S1, S2, S3 and S4.

[0057] S1, loosening the arched pressing block 500 from the installed C-shaped block 200.

[0058] S2, insert the operating rod 900 from the advance and retreat wall groove 120 into the first through-hole 212, the second through-hole 311 and the third through-hole 410 in sequence, the operating rod 900 pushes the limit column 600 upward until the limit column 600 exits the third through-hole 410, then rotate the operating rod 900 to drive the C-shaped block 200 to rotate along the peripheral wall of the installation wall groove 110, so that the limit column 600 is staggered with the third through-hole 410, and remove the operating rod 900.

[0059] S3, rotate the C-shaped block 200 so that the C-shaped block 200 switches to the disassembly state, then remove the wedge block 400, and take the wedge block 400 out of the advance and retreat wall groove 120; specifically, in order to facilitate the rotation of the C-shaped block 200, a quick-release structure 700 can be temporarily installed, and the quick-release structure 700 can be used to facilitate the rotation operation of the C-shaped block 200. When the C-shaped block 200 switches to the disassembly state, the quick-release structure 700 is removed, and then the wedge block 400 is removed.

[0060] S4, the square shaft 310 is sequentially pulled out from the opening groove 210 and the advance and retreat wall groove 120, and the disassembly of the hob 300 is completed.

[0061] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A back-mounted hob cutter holder, characterized in that: include: Two knife seat plates (100) are provided at intervals, and facing surfaces of the two knife seat plates (100) are provided with mounting wall grooves (110), and the lower ends of the mounting wall grooves (110) are provided with advance and retreat wall grooves (120); A C-shaped block (200), the C-shaped block (200) having an installed state and a disassembled state, the C-shaped block (200) being embedded in the installation wall groove (110) and being able to rotate along the peripheral wall of the installation wall groove (110) to realize switching between the installed state and the disassembled state, the peripheral wall of the C-shaped block (200) having an opening groove (210); the opening groove (210) of the C-shaped block (200) in the installed state is staggered with the advance and retreat wall groove (120), and the opening groove (210) of the C-shaped block (200) in the disassembled state is aligned with the advance and retreat wall groove (120); The hob (300) has square shafts (310) at both ends, and the square shafts (310) are embedded in the open groove (210); A wedge (400) is embedded in the opening groove and located at the opening of the opening groove (210); An arched pressing block (500) is detachably mounted on the tool holder plate (100) to press and fix the C-shaped block (200), wherein the inner side of the arched pressing block (500) is in contact with the outer side of the wedge block (400) to limit and fix the opposing shaft (310); The bottom wall (211) of the open groove (210) has a first through-hole (212) penetrating the C-shaped block (200); the square shaft (310) has a second through-hole (311) aligned with the first through-hole (212); the wedge block (400) has a third through-hole (410) aligned with the second through-hole (311); the arched pressing block (500) is elastically and movably mounted with a limiting column (600), and the limiting column (600) is embedded in the third through-hole. (410), the C-shaped block (200) is in an installed state, and the lower end of the first through hole (212) is communicated with the advance and retreat wall groove (120); when the limiting column (600) is embedded in the first through hole (212), the C-shaped block (200) is in a disassembled state, and the third through hole (410) is communicated with the advance and retreat wall groove (120), and the limiting column (600) can withdraw from the first through hole (212) or the third through hole (410) under the action of an external force.

2. The back-mounted hob cutter holder according to claim 1, characterized in that: The arched pressing block (500) is provided with a stepped hole running through from top to bottom, the stepped hole comprising a threaded hole (510), a guide hole (511) and an extension hole (512) whose diameters decrease from top to bottom; a threaded cover (520) is installed on the threaded hole (510); the limiting column (600) comprises a guide shaft (610) and a limiting shaft (620); the guide shaft (610) and the guide hole (511) are adapted to be slidably installed in the guide hole (511); the limiting shaft (620) is movably provided in the extension hole (512) so as to be embedded in the first through hole (212) or the third through hole (410).

3. The back-mounted hob cutter holder according to claim 2, characterized in that: A positioning protrusion (521) is provided at the bottom of the threaded cover (520), and a downwardly extending receiving groove (611) is provided on the upper end surface of the guide shaft (610). A first compression spring (530) is installed between the guide shaft (610) and the threaded cover (520), and the upper end of the first compression spring (530) is sleeved on the positioning protrusion (521), and the lower end is embedded in the receiving groove (611); when the guide shaft (610) and the threaded cover (520) are in contact with each other, the limiting shaft (620) withdraws from the first through hole (212) or the third through hole (410).

4. The back-mounted hob cutter holder according to claim 1, characterized in that: It also includes a quick-release structure (700), which is detachably mounted on the advance and retreat wall groove (120) and is used for being transmission-connected with the C-shaped block (200) to drive the C-shaped block (200) to rotate along the peripheral wall of the mounting wall groove (110).

5. The back-mounted hob cutter holder according to claim 4, characterized in that: The quick-release structure (700) comprises a box body (710), wherein a driving wheel (720) and a driven wheel (730) are rotatably mounted in the box body (710), and the driving wheel (720) and the driven wheel (730) are transmission-connected. A first extension shaft (721) extending out of the box body (710) is provided at the center of the driving wheel (720), and a rotating handle (722) is connected to the outer end of the first extension shaft (721). A second extension shaft (731) extending out of the box body (710) is provided at the center of the driven wheel (730), and an output wheel (732) is connected to the outer end of the second extension shaft (731). The output wheel (732) is transmission-connected to the outer peripheral wall of the C-shaped block (200) and the outer peripheral wall of the wedge block (400).

6. The back-mounted hob cutter holder according to claim 5, characterized in that: The output wheel (732) is provided with a circle of convex teeth (733) on its outer periphery, the outer periphery of the C-shaped block (200) and the outer periphery of the wedge block (400) are respectively provided with a first sunken annular groove (220) and a second sunken annular groove (420), and the first sunken annular groove (220) and the second sunken annular groove (420) are respectively provided with a first tooth groove (221) and a second tooth groove (421) for engaging with the convex teeth (733).

7. The back-mounted hob cutter holder according to claim 5, characterized in that: A positioning column (800) is elastically and movably mounted on the side wall of the box body (710), and a positioning hole (121) is provided on the side wall of the advance and retreat wall groove (120). The positioning column (800) can be elastically inserted into the positioning hole (121) to achieve position fixation of the box body (710).

8. The back-mounted hob cutter holder according to claim 7, characterized in that: The side wall of the box body (710) is provided with a guide groove (711), the guide groove (711) is provided with a through hole (712) communicating with the inner cavity of the box body (710), the bottom of the guide groove (711) is provided with an avoidance notch (713), the width of the avoidance notch (713) is smaller than the diameter of the guide groove (711), the positioning column (800) is slidably mounted in the guide groove (711), and the inner end of the positioning column (800) is provided with a through column (712) penetrating through the through hole (712). 810), the through column (810) extends to the inner cavity of the box body (710) and is connected to the limiting nut (811), the peripheral wall of the positioning column (800) is provided with a toggle column (820), the toggle column (820) moves in the avoidance gap (713) and the lower end extends out of the avoidance gap (713); the through column (810) is provided with a second compression spring (830), and the second compression spring (830) is located between the positioning column (800) and the end wall of the guide groove (711).

9. A method for disassembling and assembling a back-mounted hob cutter holder, based on the back-mounted hob cutter holder according to any one of claims 1 to 8, characterized in that: The steps include: S1, loosening the arched pressing block (500) from the C-shaped block (200) in the installed state; S2, the operating rod (900) is passed through the first through-hole (212), the second through-hole (311) and the third through-hole (410) in sequence from the advance and retreat wall groove (120), the operating rod (900) pushes the limiting column (600) upward until the limiting column (600) exits the third through-hole (410), and then the operating rod (900) is rotated to drive the C-shaped block (200) to rotate along the peripheral wall of the installation wall groove (110), so that the limiting column (600) and the third through-hole (410) are staggered, and the operating rod (900) is removed; S3, rotating the C-shaped block (200) so that the C-shaped block (200) is switched to a disassembly state, and then removing the wedge block (400), and taking the wedge block (400) out of the advance and retreat wall groove (120); S4, the square shaft (310) is sequentially pulled out from the opening groove (210) and the advance and retreat wall groove (120), completing the disassembly of the hob (300).

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