CN219826831U - Tool tensioning block anti-falling device - Google Patents
Tool tensioning block anti-falling device Download PDFInfo
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- CN219826831U CN219826831U CN202321111814.3U CN202321111814U CN219826831U CN 219826831 U CN219826831 U CN 219826831U CN 202321111814 U CN202321111814 U CN 202321111814U CN 219826831 U CN219826831 U CN 219826831U
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- tensioning block
- lock tongue
- tool
- tensioning
- falling
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- 230000005641 tunneling Effects 0.000 description 4
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Abstract
The utility model discloses an anti-falling device for a cutter tensioning block, which is arranged between a cutter box and the tensioning block and comprises an anti-falling lock tongue movably connected with the tensioning block, wherein a slot arranged along the dismounting direction of the tensioning block is arranged on the cutter box, the anti-falling lock tongue is attached to the slot through an elastic component, and the tail end of the slot is provided with a locking structure matched with the anti-falling lock tongue in a blocking way. According to the technical scheme, the elastic anti-falling lock tongue is arranged between the tool box and the tensioning block, when the tool in the tool box is dismounted by adjusting the position of the tensioning block, the elastic lock tongue arranged on the tensioning block can synchronously move along with the tensioning block, namely, the elastic lock tongue can move along a slot relative to the tool box, due to the existence of the elastic component, the elastic lock tongue can be automatically blocked with the locking structure, and when the tensioning block is withdrawn to the position where the tool can be dismounted, the anti-falling lock tongue is matched with the locking structure in a blocking way, so that the tensioning block is prevented from falling off from the tool box.
Description
Technical Field
The utility model relates to the technical field of tool replacement, in particular to an anti-falling device for a tool tensioning block.
Background
The full-face tunnel boring machine is widely applied to tunnel engineering construction of rail transit, water conservancy, national defense and the like due to the characteristics of high tunneling construction speed, high safety and the like, and breaks rock by means of strong thrust and shearing force of machinery, so that a cutter can penetrate into a rock body. In the tunneling process of the full-face tunnel boring machine, the efficient replacement of the cutter is particularly important in the whole construction process, and the cutter needs to be replaced timely after being worn so as to avoid affecting the tunneling efficiency.
However, the full-face tunnel boring machine has a narrow tool changing operation space, and has great potential safety hazards in construction environments such as large burial depth, high water pressure and the like. Therefore, a quick dismounting cutter system is designed, such as a hob cutter system disclosed in Chinese patent publication No. 2021.11.19 and publication No. CN 214787394U, which comprises a hob case and a hob detachably arranged in the hob case, wherein the cutter shafts at two ends of the hob are fastened in the hob case through a tensioning mechanism; the tensioning mechanism comprises a tensioning block and a threaded tensioning assembly, and the tensioning block is movably connected with the tool box through the threaded tensioning assembly. In the process of replacing the cutter, the hob cutter system needs to loosen the tensioning block to a certain distance to take down the cutter, and the tensioning block is withdrawn through rotation of the transmission screw on the cutter box and can fall off from the cutter box due to excessive rotation of the transmission screw, so that long-time delay is caused to reinstallation after the cutter is replaced.
Therefore, it is needed to design a device which can prevent the tensioning block from falling off and does not affect the replacement of the tensioning block, and meanwhile, the tensioning block is prevented from falling off to the tunnel face of the heading machine to cause loss, the cutter changing efficiency is prevented from being affected, and unnecessary loss caused by the loss of the tensioning block is avoided.
Disclosure of Invention
Aiming at the defects in the background technology, the utility model provides an anti-falling device for a cutter tensioning block, which solves the technical problem that the existing cutter tensioning block can fall off due to excessive rotation of a transmission screw.
The technical scheme of the utility model is as follows:
the utility model provides a taut piece anti-drop device of cutter, sets up between toolbox and taut piece, include with taut piece swing joint's anticreep spring bolt, be provided with on the toolbox and follow taut piece dismantles the fluting that the direction set up, the anticreep spring bolt pass through elastic component with the fluting laminating, grooved end be provided with anticreep spring bolt keeps off and ends complex locking structure.
According to the technical scheme, the elastic anti-falling lock tongue is arranged between the tool box and the tensioning block, when the tool in the tool box is disassembled and assembled by adjusting the position of the tensioning block, the elastic lock tongue arranged on the tensioning block can move synchronously with the tensioning block, namely, the elastic lock tongue can move along the slotting relative to the tool box, due to the existence of the elastic component, the elastic lock tongue can be automatically blocked with the locking structure, and when the tensioning block is withdrawn to the position where the tool can be taken down, the anti-falling lock tongue is matched with the locking structure in a blocking manner, so that the tensioning block is prevented from falling off from the tool box.
Further, the locking structure is a locking groove, and the locking groove is arranged in the groove, so that the processing is convenient, and the anti-falling lock tongue can be in plug-in fit with the locking groove under the action of the elastic component, so that the locking effect is achieved very reliably.
Further, the locking structure is a locking baffle or a locking protrusion, namely, the locking structure is not limited to the locking groove, other structural forms can be used, and the purpose of the locking structure is to limit the anti-falling lock tongue.
Further, the end face of the anti-falling lock tongue facing the locking direction of the tensioning block is an arc-shaped face, the end face of the anti-falling lock tongue facing away from the locking direction of the tensioning block is a plane, and the shape of the locking groove is matched with the contour of the anti-falling lock tongue. On the basis of the technical scheme, the arc-shaped surface in the technical scheme is beneficial to the anti-falling lock tongue to smoothly enter and move out of the locking groove, and even if the elastic component prevents the anti-falling lock tongue from moving out of the locking groove, the tightening block can be ensured to have no clamping stagnation in the loosening and tightening directions; the plane in this technical scheme can prevent that the anticreep spring bolt from coming off from the withdrawal direction in locking groove, no matter how the transmission screw thread lead screw removes, the tensioning piece can not drop from the toolbox, and under the effect of elastic component in addition, the tensioning piece is more reliable with the locking cooperation in locking groove.
Further, the elastic member is a coil spring, a torsion spring, a leaf spring or an air spring, that is, the elastic member can use any applicable structural form and can play a role in supporting the anti-falling lock tongue, so that the anti-falling lock tongue can change positions relative to the slot.
Further, the tensioning block comprises a tensioning block body, and a threaded hole connected with the transmission threaded screw rod is formed in the middle of the tensioning block body.
Further, the tensioning block body is connected with a guide post deviating from the tensioning inclined plane of the tensioning block, the guide post is in sliding fit with a guide hole in the tool box, and the threaded hole is located at a position between the tensioning inclined plane and the guide post.
Further, the anti-falling lock tongue is connected to the tensioning block through a limiting guide rod, the limiting guide rod is in plug-in fit with the tensioning block, and the elastic component is supported between the anti-falling lock tongue and the tensioning block.
Further, when the elastic component is a coil spring, the coil spring is sleeved on the periphery of the limit guide rod.
Further, one end of the limiting guide rod, which is away from the anti-falling lock tongue, is provided with an end cap, and when the anti-falling lock tongue is matched with the knife box in a blocking way, the end cap is attached to the tensioning block.
According to the technical scheme, the elastic anti-falling lock tongue is arranged between the tool box and the tensioning block, when the tool in the tool box is dismounted by adjusting the position of the tensioning block, the elastic lock tongue arranged on the tensioning block can synchronously move along with the tensioning block, namely, the elastic lock tongue can move along a slot relative to the tool box, due to the existence of the elastic component, the elastic lock tongue can be automatically blocked with the locking structure, and when the tensioning block is withdrawn to the position where the tool can be dismounted, the anti-falling lock tongue is matched with the locking structure in a blocking way, so that the tensioning block is prevented from falling off from the tool box.
In the cutter system of the full-face tunnel boring machine, a hob is fixed on a cutter box through a tensioning block, the tensioning block is required to be loosened when the cutter is replaced, and if the rotation of a transmission threaded screw rod is out of limit, the tensioning block can fall off relative to the cutter box. According to the technical scheme, the elastic anti-falling lock tongue is arranged between the tensioning block and the cutter box, so that the tensioning block is prevented from falling off during cutter changing, loss caused by falling off of the tensioning block to the face of the heading machine is avoided, cutter changing efficiency is prevented from being influenced, and unnecessary loss caused by loss of the tensioning block is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of the installation location of the present utility model;
FIG. 2 is a schematic view of the tensioning block of FIG. 1;
FIG. 3 is a position state diagram of the tensioning block and the anti-falling lock tongue when the hob is working normally;
FIG. 4 is a position state diagram of the tensioning block and the anti-falling lock tongue during tool changing;
FIG. 5 is a position diagram of the tensioning block and the anti-slip lock tongue;
FIG. 6 is an enlarged view of the anti-slip latch;
FIG. 7 is a right side view of FIG. 2;
the serial numbers in the figure are respectively:
a cutter box 1, a hob 2, a cutter holder C-shaped block 3, a transmission threaded screw rod 4 and a cover plate 5;
6, tensioning the block;
601 spiral spring, 602 limit guide rod, 603 guide post, 604 tensioning block body, 605 end cap;
7, preventing the lock tongue from falling off;
8 grooves and 801 locking grooves.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a taut piece anti-drop device of cutter, as shown in fig. 1-3, set up between case 1 and taut piece 6, include with taut piece 6 swing joint's anticreep spring bolt 7, be provided with on the case 1 along taut piece 6 dismantles fluting 8 that the direction set up, anticreep spring bolt 7 pass through elastic component with fluting 8 laminating, fluting 8's end is provided with and anticreep spring bolt 7 keeps off complex locking structure.
This technical scheme sets up between tool box 1 and taut piece 6 has elastic anticreep spring bolt 7, when the cutter in dismouting tool box 1 is carried out through adjusting taut piece 6 position, the elasticity spring bolt 7 that sets up on taut piece 6 can follow taut piece 6 synchronous motion, and elasticity spring bolt 7 can remove along fluting 7 relative tool box 1 promptly, because elastic component's existence, elasticity spring bolt 7 can be automatic with locking structure block, when taut piece 6 is moved back to the position that the cutter can be taken off, anticreep spring bolt 7 and locking structure block cooperation prevent that taut piece 6 from coming off in the tool box 1.
The cutter unit in the technical scheme is the same as the prior art in the background technology, and comprises a cutter box 1, a hob 2, a cutter holder C-shaped block 3, a transmission threaded screw rod 4, a cover plate 5 and a tensioning block 6, wherein the above components except the hob are symmetrical with each other by taking the normal plane of the hob cutter head as a symmetrical plane, and the specific structure is not repeated.
On the basis of the above embodiment, as a preferred embodiment, the locking structure is a locking groove 801, and the locking groove 801 is arranged in the slot 8, so that the processing is convenient, and the anti-falling lock tongue 7 can be in plug-in fit with the locking groove 801 under the action of the elastic member, so that the locking effect is achieved very reliably.
In addition to the above embodiment, as a preferred embodiment, the locking structure is a locking baffle or a locking protrusion, that is, the locking structure is not limited to the locking groove 801, and other structures may be used, which aim at limiting the anti-falling lock tongue 7.
On the basis of the above embodiment, as a preferred embodiment, as shown in fig. 6, the end face of the anti-falling lock tongue 7 facing the locking direction of the tensioning block 6 is an arc-shaped face, the end face facing away from the locking direction of the tensioning block 6 is a plane, and the shape of the locking groove 801 is adapted to the contour of the anti-falling lock tongue 7.
The arc surface in the technical scheme is beneficial to the anti-falling lock tongue 7 to smoothly enter and move out of the locking groove 801, and even if the elastic component prevents the anti-falling lock tongue 7 from moving out of the locking groove 801, the tightening block 6 can be ensured to have no clamping stagnation in the loosening and tightening directions; the plane in this technical scheme can prevent to drop in the withdrawal direction of locking groove 801 from locking spring bolt 7, no matter how transmission screw thread lead screw 4 removes, take-up block 6 can not drop from tool case 1, and in addition under the effect of elastic component, take-up block 6 is more reliable with the locking cooperation of locking groove 801.
In addition to the above embodiment, as a preferred embodiment, the elastic member may be a coil spring 601, a torsion spring, a leaf spring, or an air spring, that is, any suitable structural form may be used as the elastic member, and the elastic member may function to support the anti-disengagement lock tongue 7, so that the anti-disengagement lock tongue 7 may change its position with respect to the slot 8.
Further, the tensioning block 6 comprises a tensioning block body 604, and a threaded hole connected with the transmission threaded screw 4 is formed in the middle of the tensioning block body 604. The tensioning block body 604 is connected with a guide post 603 which is away from the tensioning inclined surface of the tensioning block 6, the guide post 603 is in sliding fit with a guide hole in the tool box 1, and the threaded hole is positioned between the tensioning inclined surface and the guide post 603.
On the basis of the above embodiment, as a preferred embodiment, the anti-falling lock tongue 7 is connected to the tensioning block 6 through the limiting guide rod 602, the limiting guide rod 602 is in plug-in fit with the tensioning block 6, and the elastic member is supported between the anti-falling lock tongue 7 and the tensioning block 6.
Preferably, as shown in fig. 7, the cross section of the limit guide rod 602 is a non-revolving pattern, so that the limit guide rod 602 can only stretch and retract relative to the tensioning block 6, but cannot rotate relative to the tensioning block 6, and the relative state of the anti-falling lock tongue 7 is ensured to be unchanged all the time.
In addition to the above embodiment, as a preferred embodiment, when the elastic member is a coil spring 601, the coil spring 601 is sleeved on the outer circumference of the limit guide 602.
On the basis of the above embodiment, as a preferred embodiment, one end of the limit guide rod 602, which is away from the anti-falling lock tongue 7, is provided with an end cap 605, and when the anti-falling lock tongue 7 is in stop fit with the tool case 1, the end cap 605 is attached to the tensioning block 6, so that the tensioning block 6 is convenient to detach.
As shown in fig. 3, 4 and 5, the hob is in normal operation, the lock tongue is limited when the tensioning block is withdrawn, and the tensioning block is taken out.
When the hob is used for normal tunneling operation, the anti-falling lock tongue 7 compresses the spiral spring 601 in the slot 8 in the hob case 1, the tensioning block is in a state of tensioning hob cutters, and as shown in fig. 3, a part of the anti-falling lock tongue 7 extends out of the tensioning 6 and is clung to the hob case 1.
When the worn hob cutter needs to be replaced, as shown in fig. 4, the transmission threaded screw 4 rotates to push the tensioning block 6 to withdraw from the hob cutter box 1, at this time, the anti-falling lock tongue 7 moves linearly in the slot 8 of the hob cutter box 1 until reaching the opening of the hob cutter box 1, and the anti-falling lock tongue 7 is clamped at the locking slot 801 by the thrust of the spiral spring 601, so that the tensioning block 6 is prevented from falling out of the hob cutter box 1 due to excessive rotation of the transmission threaded screw 4.
As shown in fig. 5, when the tensioning block 6 needs to be removed, the limiting guide rod 602 can be pulled outwards, the anti-falling lock tongue 7 is pulled out from the opening of the cutter box 1, and the tensioning block 6 can be taken out from the hob cutter box.
The present utility model is not limited to the conventional technical means known to those skilled in the art.
The foregoing has shown and described the basic principles, main features and advantages of the present utility model. The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a taut piece anti-drop device of cutter, sets up between case (1) and taut piece (6), its characterized in that: including with take-up piece (6) swing joint's anticreep spring bolt (7), be provided with on knife case (1) along take-up piece (6) dismantlement direction sets up fluting (8), anticreep spring bolt (7) pass through elastic component with fluting (8) laminating, the end of fluting (8) is provided with and keeps off complex locking structure with anticreep spring bolt (7).
2. The tool-tensioning block anti-drop device of claim 1, wherein: the locking structure is a locking groove (801).
3. The tool-tensioning block anti-drop device of claim 1, wherein: the locking structure is a locking baffle or a locking protrusion.
4. The tool-tensioning block anti-drop device of claim 2, wherein: the end face of the anti-falling lock tongue (7) facing the locking direction of the tensioning block (6) is an arc-shaped face, the end face deviating from the locking direction of the tensioning block (6) is a plane, and the shape of the locking groove (801) is matched with the contour of the anti-falling lock tongue (7).
5. The tool-tensioning element anti-drop device of any one of claims 1-4, wherein: the elastic member is a coil spring (601) or a torsion spring or a leaf spring or an air spring.
6. The tool-tensioning block anti-drop device of claim 5, wherein: the tensioning block (6) comprises a tensioning block body (604), and a threaded hole connected with the transmission threaded screw rod (4) is formed in the middle of the tensioning block body (604).
7. The tool-tensioning block anti-drop device of claim 6, wherein: the tensioning block body (604) is connected with a guide post (603) deviating from a tensioning inclined plane of the tensioning block (6), the guide post (603) is in sliding fit with a guide hole in the tool box (1), and the threaded hole is located at a position between the tensioning inclined plane and the guide post (603).
8. The tool-tensioning element anti-drop device of any one of claims 1-4, 6-7, wherein: the anti-falling lock tongue (7) is connected to the tensioning block (6) through a limiting guide rod (602), the limiting guide rod (602) is in plug-in fit with the tensioning block (6), and the elastic component is supported between the anti-falling lock tongue (7) and the tensioning block (6).
9. The tool-tensioning block anti-drop device of claim 8, wherein: when the elastic component is a coil spring (601), the coil spring (601) is sleeved on the periphery of the limit guide rod (602).
10. The tool-tensioning block anti-drop device of claim 9, wherein: one end of the limiting guide rod (602) deviating from the anti-falling lock tongue (7) is provided with an end cap (605), and when the anti-falling lock tongue (7) is matched with the knife box (1) in a blocking way, the end cap (605) is matched with the tensioning block (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321111814.3U CN219826831U (en) | 2023-05-10 | 2023-05-10 | Tool tensioning block anti-falling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321111814.3U CN219826831U (en) | 2023-05-10 | 2023-05-10 | Tool tensioning block anti-falling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219826831U true CN219826831U (en) | 2023-10-13 |
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ID=88280599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321111814.3U Active CN219826831U (en) | 2023-05-10 | 2023-05-10 | Tool tensioning block anti-falling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219826831U (en) |
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2023
- 2023-05-10 CN CN202321111814.3U patent/CN219826831U/en active Active
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