Back-mounted hob holder and disassembly and assembly method

Abstract

The invention discloses a back-mounted hob holder and a disassembly and assembly method, the back-mounted hob holder comprises two hob holder plates, the opposite surfaces of the two hob holder plates are provided with mounting wall grooves, and the lower ends of the mounting wall grooves are provided with advancing and retreating wall grooves; the C-shaped block has a mounting state and a dismounting state; square shafts are arranged at the two ends of the hobbing cutter, and the square shafts are embedded into the open grooves; the wedge block is embedded into the open slot and is positioned at the opening of the open slot; and the arch-shaped pressing block is detachably installed on the tool apron plate so as to press and fix the C-shaped block, and the inner side of the arch-shaped pressing block is attached to the outer side of the wedge block so as to limit and fix the square shaft. During dismounting, the wedge block and the square shaft can be pulled out from the open slot and the advancing and retreating wall slot only by moving the C-shaped block to a dismounting state, and the dismounting is simple and convenient, so that the hob replacement efficiency is improved, and the construction time when the hob needs to be replaced due to abrasion or damage is shortened.

Description

Technical Field

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

[0002] The shield machine is a large-scale mechanical equipment used for underground tunnel construction. The cutter is a key component on the shield machine cutterhead for cutting soil and rocks, and its performance directly affects the tunneling efficiency and construction safety of the shield machine. However, there are some shortcomings in the removal operation of the cutter in the prior art. For example, when the cutter is severely worn or eccentrically worn, it is not easy to remove the cutter. The removal of the cutter of the shield machine is not only complicated but also time-consuming. Under some extreme geological conditions, such as isolated rock groups, the cutter may be damaged and need to be replaced frequently, 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 existing in the prior art. To this end, the present invention provides a back-mounted hob cutter holder and a disassembly and assembly method.

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

[0005] A back-mounted hob tool holder, comprising: a tool holder plate, two of which are arranged at intervals, the facing surfaces of the two tool 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 has 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 achieve 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 are embedded in the open grooves; a wedge block is embedded in the open groove and is located at the opening of the open groove; an arched pressure block can be detachably installed on the tool holder 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 penetrating the C-type 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-type 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-type 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 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, the guide shaft is adapted to and slidably installed in the guide hole, and the limiting shaft is movably penetrated in the extension hole so as 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 is against the threaded cover, 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 on 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, a guide groove is provided on the side wall of the box body, a through hole is provided in the guide groove and connected to the inner cavity of the box body, an avoidance notch is provided at the bottom of the guide groove, 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 penetrating through the through hole, the through column extends to the inner cavity of the box body and is connected to a limiting nut, a toggle column is provided on the peripheral wall of the positioning 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 method for disassembling and assembling a back-mounted hob cutter seat, comprising the following steps: S1, loosening the C-block in the installed state from the arched pressure block; S2, inserting the operating rod from the advance and retreat wall groove into the first perforation, the second perforation and the third perforation in sequence, the operating rod pushes the limit column upward until the limit column exits the third perforation, then rotating the operating rod to drive the C-block to rotate along the peripheral wall of the installation wall groove, so that the limit column is staggered with the third perforation, and removing the operating rod; S3, rotating the C-block so that the C-block is switched to the disassembly state, then removing the wedge block, and taking 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 installation state and the removal state of the C-block makes the removal process of the hob easier and faster. The C-block can rotate along the peripheral wall of the installation wall groove to switch from the installation state to the removal state, thereby simplifying the removal operation of the hob. Due to the staggered and aligned design of the opening groove and the advance and retreat wall groove of the C-block, the square shaft of the hob can be more easily embedded in and out of the opening groove, 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 coordinated use of the wedge block and the arched pressure block allows the square shaft to be effectively limited and fixed. When disassembling, you only need to move the C-block to the removal state, and then you can pull out the wedge block and the square shaft from the opening groove and the advance and retreat wall groove. Disassembly is simple and convenient.

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

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the 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 schematic 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] Fig. 9 It is a cross-sectional view after the quick-release structure is installed;

[0028] Fig.10 yes Fig. 9 Enlarged view of point B.

[0029] Legend:

[0030] The knife base plate 100, the installation 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 block 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, convex 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 used to limit the present invention.

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[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 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 only used for descriptive purposes and cannot 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" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a 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 A back-mounted hob cutter seat in a preferred embodiment of the present invention 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 the 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 in the disassembled state, the wedge block 400 and the square shaft 310 can be successively detached from the open groove 210 and pulled out from the advance and retreat wall groove 120 to complete the disassembly.

[0046] The arched pressing block 500 can be detachably mounted on the tool base plate 100 to press and fix the C-shaped block 200. The arched pressing block 500 and the tool base plate 100 can be provided with corresponding holes to be connected by fasteners. The inner side of the arched pressing block 500 is in contact with the outer side of the wedge block 400, thereby limiting the space for the wedge block 400 to move outward, so that the wedge block 400 is clamped and fixed between the square shaft 310 and the arched pressing block 500, and the square shaft 310 is also limited and fixed.

[0047] The switching between the installation state and the disassembly state of the C-block 200 makes the disassembly process of the hob 300 simpler and faster. The C-block 200 can rotate along the peripheral wall of the installation wall groove 110 to achieve the switching from the installation state to the disassembly state, thereby simplifying the disassembly operation of the hob. 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 hob 300 can be more easily inserted into and withdrawn from the opening groove 210, 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 500 enables the C-block 200 to be pressed and fixed, ensuring the stability and reliability of the hob 300 during operation. The coordinated use of the wedge block 400 and the arched pressure block 500 enables the square shaft 310 to be effectively limited and fixed. 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 groove 210 and the advance and retreat wall groove 120 , so that the disassembly is 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-type 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-type 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-type block 200 is in a disassembled state, 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. Thus, the position limiting column 600 is used to limit the C-shaped block 200 in the installed state and the disassembled state, so that the position is accurate during installation and stable during disassembly, which is convenient for disassembly. When the state needs to be switched, the operating rod 900 only needs to be inserted 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, and the operating rod 900 pushes the position limiting column 600 upward until the position limiting column 600 exits the third through hole 410 or the first through hole 212, 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 position limiting column 600 is staggered with the third through hole 410 or the first through hole 212, and the position limiting lock of the C-shaped block 200 by the position limiting column 600 is released, and then the C-shaped block 200 can 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 pressing block 500 is provided with a stepped hole running through from top to bottom, and the stepped hole includes a threaded hole 510, a guide hole 511 and a protruding hole 512 whose diameters decrease from top to bottom; a threaded cover 520 is installed on the threaded hole 510, and the limiting column 600 includes a guide shaft 610 and a limiting shaft 620, the guide shaft 610 is adapted to the guide hole 511 and is slidably installed in the guide hole 511, and the limiting shaft 620 is movably penetrated in the protruding hole 512 so as to be embedded in the first through hole 212 or the third through hole 410. The diameter of the guide hole 511 is larger than that of the protruding hole 512, that is, the diameter of the guide shaft 610 is larger than that of the protruding hole 512, so it will not enter the protruding hole 512, thereby limiting the travel of the limiting shaft 620 protruding from the protruding hole 512, and preventing the limiting column 600 from completely detaching from the protruding 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 receiving groove 611 extending downward 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, thereby playing a positioning and limiting effect on the first compression spring 530. When the guide shaft 610 and the threaded cover 520 are against each other, the limiting shaft 620 withdraws from 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 enough accommodation space for the first compression spring 530, so that even when the guide shaft 610 and the threaded cover 520 are against each other, there is still an accommodation groove 611 to accommodate the first compression spring 530. The first compression spring 530 is used to provide elastic force to the limiting column 600, so that when there is no other external force, the limiting column 600 will automatically insert into the third through hole 410 or the first through hole 212 and will remain in the state of being inserted into the third through hole 410 or the first through hole 212, so that the limiting is more stable; for example, when the C-shaped block 200 is switched to the disassembly state, the limiting column 600 is aligned with the first through hole 212, and under the action of the first compression spring 530, the limiting column 600 is inserted into the first through hole 212, so that the C-shaped block 200 is stable in the disassembly state, and then the wedge block 400 and the hob 300 are disassembled, and during disassembly, the C-shaped block 200 will not rotate at will, so that the open groove 210 is stably aligned with the advance and retreat wall groove 120, which facilitates 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 is detachably installed in the advance and retreat wall groove 120 and is used to be transmission-connected with 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 Fig. 9In some embodiments of the present invention, the quick-release structure 700 includes a box body 710, in which a driving wheel 720 and a driven wheel 730 are rotatably installed, and the driving wheel 720 and the driven wheel 730 are connected in transmission, and the transmission can be realized by a transmission belt. The center of the driving wheel 720 is provided with a first extension shaft 721 extending out of the box body 710, and the outer end of the first extension shaft 721 is connected to a rotating handle 722. The center of the driven wheel 730 is provided with a second extension shaft 731 extending out of the box body 710, and the outer end of the second extension shaft 731 is connected to an output wheel 732, and the output wheel 732 is connected in transmission with the outer peripheral wall of the C-block 200 and the outer peripheral wall of the wedge block 400. The outer peripheral wall of the C-block 200 and the outer peripheral wall of the wedge block 400 form a complete circumferential surface, and are thus connected in transmission with the output wheel 732. The transmission of the driving wheel 720 and the driven wheel 730 is utilized to realize the rotation of the driven wheel 730 and the output wheel 732, and during operation, the operating space is moved downward as much as possible, so that the operating space is larger, the structural obstacles are fewer, and the operation is more convenient.

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

[0054] Reference Figure 4 , Fig. 9 and Fig.10 In a further embodiment of the present invention, the side wall of the box body 710 is elastically and movably mounted with a positioning column 800, and the side wall of the advancing and retreating wall groove 120 is provided with a positioning hole 121, and the positioning column 800 can be elastically inserted into the positioning hole 121 to achieve the position fixation of the box body 710, so that installation and removal can be conveniently achieved through the movable positioning column 800. Therefore, when removal is required, the quick-release structure 700 is temporarily installed, and the quick-release structure 700 can be removed after use to facilitate the removal of the square shaft 310.

[0055] Reference Fig.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 communicating with the inner cavity of the box body 710 is provided in the guide groove 711, and an avoidance notch 713 is provided at the bottom of the guide groove 711. The positioning column 800 is slidably installed in the guide groove 711, and the diameter of the positioning column 800 is adapted to the guide groove 711. The width of the avoidance notch 713 is smaller than the diameter of the guide groove 711, thereby preventing the positioning column 800 from being separated from the avoidance notch 713. A through column 810 penetrating the through hole 712 is provided at the inner end of the positioning column 800. A toggle column 820 is provided on the peripheral wall of the positioning column 800, and the toggle column 820 moves in the avoidance notch 713 and the lower end extends out of the avoidance notch 713, thereby facilitating manual toggle of the toggle column 820, and facilitating the positioning column 800 to be pulled out of the positioning hole 121 when the quick-release structure 700 is disassembled. The through-column 810 is sleeved with a second compression spring 830, which is located between the positioning column 800 and the end wall of the guide groove 711, so as to push the positioning column 800 to elastically insert into the positioning hole 121, and after being inserted into the positioning hole 121, the positioning column 800 is kept in the position of being inserted into the positioning hole 121, so that the installation is stable. The through-column 810 extends to the inner cavity of the box body 710 and is connected to the limiting nut 811, and the contour of the limiting nut 811 is larger than the through hole 712, so as to prevent the positioning column 800 from being separated from the guide groove 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 seat, comprising steps S1, S2, S3 and S4.

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

[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-block 200 so that the C-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-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-block 200. When the C-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 advancing and retreating wall groove 120, and the disassembly of the hob 300 is completed.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A back-mounted hob cutter seat, characterized in that: include: Two knife seat plates (100) are arranged at intervals, and the 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 advancing and retreating 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 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), and the open 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 block (400) is embedded in the opening groove and is located at the opening of the opening groove (210); The arched pressing block (500) is detachably mounted on the tool holder plate (100) to press and fix the C-shaped block (200). 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).

2. The back-mounted hob cutter holder according to claim 1, characterized in that: 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. When the C-shaped block (200) is in an installed state, 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, 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 an external force.

3. The back-mounted hob cutter holder according to claim 2, characterized in that: The arched pressing block (500) is provided with a stepped hole penetrating from top to bottom, and the stepped hole includes 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), and the limiting column (600) includes 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), and the limiting shaft (620) is movably installed in the extension hole (512) so as to be embedded in the first through hole (212) or the third through hole (410).

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

5. 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 to be transmission-connected with the C-shaped block (200) to drive the C-shaped block (200) to rotate along the peripheral wall of the installation wall groove (110).

6. The back-mounted hob cutter holder according to claim 5, 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 connected in a transmission manner; 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 at 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 at the outer end of the second extension shaft (731), and the output wheel (732) is connected in a transmission manner to the outer peripheral wall of the C-shaped block (200) and the outer peripheral wall of the wedge block (400).

7. The back-mounted hob cutter holder according to claim 6, characterized in that: The output wheel (732) is provided with a circle of convex teeth (733) on its outer periphery, the outer peripheral wall of the C-shaped block (200) and the outer peripheral wall 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).

8. The back-mounted hob cutter holder according to claim 6, characterized in that: The side wall of the box body (710) is elastically and movably mounted with a positioning column (800), the side wall of the advance and retreat wall groove (120) is provided with a positioning hole (121), and the positioning column (800) can be elastically inserted into the positioning hole (121) to achieve the position fixation of the box body (710).

9. The back-mounted hob cutter holder according to claim 8, 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 sleeved 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).

10. A method for disassembling and assembling a back-mounted hob cutter seat, 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 advancing and retreating wall groove (120), the operating rod (900) pushes the limiting column (600) upward until the limiting column (600) exits the third through hole (410), 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 offset, 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 advancing and retreating wall groove (120); S4, the square shaft (310) is sequentially pulled out from the opening groove (210) and the advancing and retreating wall groove (120), and the disassembly of the hob (300) is completed.

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