Shield tunneling machine cutterhead hob cutter box positioning tool

Abstract

The utility model relates to the technical field of shield tunneling machines, in particular to a shield tunneling machine cutterhead hob cutter box positioning tool which comprises a cutter box and a cutter shaft arranged in the cutter box, a false cutter is fixedly arranged in the middle of the cutter shaft in a sleeved mode, and locking assemblies used for fixing the cutter shaft are arranged on two side plates of the cutter box. The locking assembly comprises an L-shaped cushion block, a clamping block, a tensioning block and a fixing piece, the L-shaped cushion block is arranged on the upper portion of the cutter box side plate, and the end of the cutter shaft is located on the top of the horizontal portion of the L-shaped cushion block; the clamping block is arranged on one side of the cutter shaft in a clamping mode, the tensioning block is located under the clamping block, and the clamping block and the tensioning block are both connected with the fixing piece. According to the utility model, the hobbing cutter box can be riveted and positioned conveniently, the positioning radius and height of the hobbing cutter box can be detected conveniently and accurately, the positioning radius and height errors of the hobbing cutter box are reduced, and accurate positioning of the hobbing cutter box is realized; the positioning radius and height measurement accuracy of the cutter box are ensured, and meanwhile, the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a positioning tooling for a cutter head hob cutter box of a shield machine. Background Technique

[0002] A shield machine is a tunnel boring machine using the shield method. The basic working principle of the shield machine is that a cylindrical steel component advances forward along the axis of the tunnel while excavating the soil. The shell of this cylindrical component is the shield, which plays a temporary supporting role for the unlined tunnel section excavated, bears the pressure of the surrounding soil layer, sometimes also bears the groundwater pressure and keeps the groundwater outside. Operations such as excavation, soil discharge, and lining are carried out under the cover of the shield.

[0003] During the construction process, the shield machine mainly breaks rocks through hob cutters. The radius and height dimension errors of the cutter head hob cutters are required to be within a few millimeters. Among them, the hob cutters of the shield machine are installed in the cutter box, and the cutter box is welded to the main structure of the cutter head. Therefore, during the manufacturing stage of the cutter head, it is necessary to strictly control the positioning dimensions of the cutter box, and control the radius and height dimensions of the hob cutters accurately by controlling the positioning dimensions of the cutter box. However, in the prior art, it is difficult to rivet and position the cutter box of the cutter head hob cutter of the shield machine, and the radius and height dimension errors of the cutter box positioning are relatively large, which in turn affects the radius and height precision of the cutter head hob cutter. Summary of the Invention

[0004] In order to solve the problems of difficult riveting and positioning of the cutter box of the cutter head hob cutter of the existing shield machine and relatively large radius and height dimension errors of the cutter box positioning, the utility model provides a positioning tooling for a cutter head hob cutter box of a shield machine. Through this positioning tooling, it is convenient to rivet and position the hob cutter box, can conveniently and accurately detect the radius and height dimensions of the cutter box positioning, reduce the radius and height dimension errors of the cutter box positioning, and achieve precise positioning of the cutter box; while ensuring the measurement accuracy of the radius and height of the cutter box positioning, it also improves the production efficiency.

[0005] In order to achieve the above purpose, the technical solution of the utility model is: a positioning tooling for a cutter head hob cutter box of a shield machine, including a cutter box and a cutter shaft arranged inside the cutter box, and a dummy cutter is fixedly sleeved in the middle of the cutter shaft. Precise positioning of the cutter box can be achieved by measuring the cutter height and radius of the dummy cutter.

[0006] Locking components for fixing the tool shaft are provided on both side plates of the tool box. The locking components include L-shaped pads, blocks, tension blocks and fixing parts. The L-shaped pads are arranged at the upper parts of the side plates of the tool box, and the ends of the tool shaft are located at the tops of the horizontal parts of the L-shaped pads; the blocks are clamped on one side of the tool shaft, the tension blocks are located directly below the blocks, and both the blocks and the tension blocks are connected to the fixing parts. The L-shaped pads and blocks of the locking components achieve the effect of clamping and fixing the tool shaft. Among them, through the cooperation of the fixing parts with the tension blocks and the blocks, the blocks are tightened and fixed, so as to achieve the purpose of clamping and fixing the tool shaft by the blocks.

[0007] Further, a fixed tool mark is provided at the middle position of the top of the dummy tool. By measuring the tool height and radius of the fixed tool mark of the dummy tool, ensuring that the tool height and radius of the fixed tool mark of the dummy tool are within the error range to determine the position of the tool box, and then realizing the precise positioning of the tool box.

[0008] Further, grooves are formed on the inner sides of both side plates of the tool box, and the L-shaped pads are arranged inside the grooves; fixing screws are provided on both side plates of the tool box, and the L-shaped pads are connected to the side plates of the tool box through the fixing screws. The grooves play a role in assembling the L-shaped pads, and the L-shaped pads are fixed on the tool box through the fixing screws.

[0009] Further, lower cutting tables matching the horizontal parts of the L-shaped pads are provided at the bottoms of both ends of the tool shaft, and side cutting tables matching the vertical parts of the L-shaped pads are provided on one side of both ends of the tool shaft.

[0010] Further, bevel cutting tables are provided on the other side of both ends of the tool shaft, and a matching table matching the bevel cutting table is provided on the side of the block close to the tool shaft. Through the cooperation of the horizontal part of the L-shaped pad and the lower cutting table, the cooperation of the vertical part of the L-shaped pad and the side cutting table, and the cooperation of the bevel cutting table and the matching table, the effect of clamping and fixing the tool shaft by the L-shaped pad and the block is achieved.

[0011] Further, a T-shaped groove is formed on the inner side of the tool box. The tension block is located at the bottom of the side plate of the tool box and is located in the T-shaped groove. The tension block has a "convex" structure. The T-shaped groove plays a role in installing the block, the tension block and the fixing part, so as to tighten and fix the block through the tension block and the fixing part.

[0012] Further, the fixing part is a tension screw. One end of the tension screw sequentially penetrates through the block and the tension block, and the tension screw is threadedly connected to the block. Through the cooperation of the tension screw and the tension block, the block is tightened and fixed, so as to achieve the effect of clamping and fixing the tool shaft by the block.

[0013] Further, a locking nut is provided at the lower end of the tensioning screw and is located below the tensioning block. A washer is arranged between the locking nut and the tensioning block. A protective sleeve is also threadedly connected to the lower end of the tensioning screw, and the locking nut and the washer are located inside the protective sleeve. The locking nut can lock and fix the tensioning block, and further, the purpose of tensioning and fixing the clamping block is achieved through the tensioning screw, so that the clamping block applies a force to the tool shaft to clamp and fix the tool shaft.

[0014] Through the above technical solution, the beneficial effects of the present utility model are as follows:

[0015] The structure of the present utility model is reasonable, has good use effects, is convenient for riveting and positioning of the hob cutter box, can accurately position the cutter box through the position of the dummy tool, and can conveniently and accurately detect the radius and height dimensions of the cutter box positioning, reduce the radius and height dimension errors of the cutter box positioning, and achieve precise positioning of the cutter box; while ensuring the measurement accuracy of the radius and height of the cutter box positioning, the production efficiency is also improved.

[0016] The present utility model uses the L-shaped cushion block and the clamping block of the locking component on both side plates of the cutter box to achieve the purpose of clamping and fixing the tool shaft, so as to achieve the effect of assembling the tool shaft and the dummy tool onto the cutter box; among them, through the cooperation of the clamping block and the tensioning screw and the cooperation of the tensioning screw with the tensioning block and the locking nut, the purpose of tensioning and fixing the clamping block is achieved, so that the clamping block applies a force to the tool shaft to achieve the effect of clamping and fixing the tool shaft in cooperation with the L-shaped cushion block. Through the cooperation of the horizontal part of the L-shaped cushion block and the lower cutting table, the cooperation of the vertical part of the L-shaped cushion block and the side cutting table, and the cooperation of the inclined cutting table and the fitting table, the effect of the clamping block and the L-shaped cushion block clamping and fixing the tool shaft is improved.

[0017] The present utility model installs the cutter box on the cutter head, measures the tool height and radius at the tool setting mark of the dummy tool, makes the tool height and radius of the tool setting mark of the dummy tool within the error range, thereby accurately detecting the radius and height dimensions of the cutter box positioning, making the radius and height dimensions of the cutter box positioning within the error range, reducing the radius and height dimension errors of the cutter box positioning, and achieving the effect of precise positioning of the cutter box. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a positioning tool for a hob cutter box of a shield machine cutter head of the present utility model;

[0019] Figure 2 is Figure 1 the enlarged structural diagram at A-A in

[0020] Figure 3 is Figure 1 the enlarged structural diagram at B-B in

[0021] Figure 4Structural schematic of the tool shaft and dummy tool of the present utility model Figure 1 ;

[0022] Figure 5 Structural schematic of the tool shaft and dummy tool of the present utility model Figure 2 ;

[0023] Figure 6 Structural schematic of the tool shaft and dummy tool of the present utility model Figure 3 。

[0024] In the attached drawings, the reference numerals are: 1 is the tool box, 2 is the L-shaped cushion block, 3 is the fixing screw, 4 is the tool shaft, 5 is the side cutting table, 6 is the lower cutting table, 7 is the inclined cutting table, 8 is the dummy tool, 9 is the fixed tool mark, 10 is the clamping block, 11 is the T-shaped groove, 12 is the tensioning block, 13 is the tensioning screw, 14 is the locking nut, 15 is the washer, and 16 is the protective sleeve. Specific embodiments

[0025] The present utility model will be further described below in conjunction with the attached drawings and specific embodiments:

[0026] As Figures 1 to 6 shown, a positioning tooling for the cutter head hob tool box of a shield machine includes a tool box 1 and a tool shaft 4 arranged inside the tool box 1. A dummy tool 8 is fixedly sleeved in the middle of the tool shaft 4. In this embodiment, the dummy tool 8 is welded and fixed in the middle of the tool shaft 4, and it is necessary to make the movement track of the dummy tool 8 consistent with that of the real tool.

[0027] Locking components for fixing the tool shaft 4 are provided on both side plates of the tool box 1. The locking components include an L-shaped cushion block 2, a clamping block 10, a tensioning block 12 and a fixing member. The L-shaped cushion block 2 is arranged at the upper part of the side plate of the tool box 1, and the end of the tool shaft 4 is located at the top of the horizontal part of the L-shaped cushion block 2; the clamping block 10 is clamped on one side of the tool shaft 4, and the tensioning block 12 is located directly below the clamping block 10. Both the clamping block 10 and the tensioning block 12 are connected to the fixing member. In this embodiment, the L-shaped cushion block 2 is detachably installed on the side plate of the tool box 1. The L-shaped cushion block 2 plays a role in supporting and fixing the tool shaft 4. The vertical part of the L-shaped cushion block 2 and the clamping block 10 are respectively located on both sides of the tool shaft 4. The tool shaft 4 is clamped and fixed through the cooperation of the L-shaped cushion block 2 and the clamping block 10. The fixing member tightens and fixes the clamping block 10 through the cooperation of the tensioning block 12 and the fixing member, so that the clamping block 10 applies a force to the tool shaft 4 to clamp and fix the tool shaft 4, and further achieves the purpose of installing the tool shaft 4 and the dummy tool 8 on the tool box 1.

[0028] A fixed tool mark 9 is provided at the middle position of the top of the dummy tool 8. In this embodiment, the fixed tool mark 9 on the dummy tool 8 is consistent with the measuring points of the contour of the real tool. After the tool box 1 is hoisted onto the tool disc, the height and radius of the tool box 1 are determined by measuring the height and radius of the fixed tool mark 9, so that the height and radius dimensions of the positioning of the tool box 1 are within the error range, thereby achieving the effect of precise positioning of the tool box 1.

[0029] Grooves are provided on the inner sides of both side plates of the tool box 1, and the L-shaped cushion blocks 2 are arranged inside the grooves; fixing screws 3 are provided on both side plates of the tool box 1, and the L-shaped cushion blocks 2 are connected to the side plates of the tool box 1 through the fixing screws 3. In this embodiment, the grooves improve the position of the L-shaped cushion blocks 2 installed on the side plates of the tool box 1. The L-shaped cushion blocks 2 are fixed on the side plates of the tool box 1 through two fixing screws 3. The fixing screws 3 are threadedly connected to the side plates of the tool box 1 and the L-shaped cushion blocks 2. A sinking groove for installing the screw heads of the fixing screws 3 is provided at the bottom of the side plate of the tool box 1.

[0030] Lower cutting platforms 6 that match the horizontal parts of the L-shaped cushion blocks 2 are provided at the bottoms of both ends of the tool shaft 4, and side cutting platforms 5 that match the vertical parts of the L-shaped cushion blocks 2 are provided on one side of both ends of the tool shaft 4. In this embodiment, after the tool shaft 4 is fixed on the tool box 1, the lower cutting platforms 6 are closely attached to the horizontal parts of the L-shaped cushion blocks 2, and the side cutting platforms 5 are closely attached to the inner sides of the vertical parts of the L-shaped cushion blocks 2. The fixing effect of the tool shaft 4 can be improved through the lower cutting platforms 6 and the side cutting platforms 5.

[0031] Oblique cutting platforms 7 are provided on the other side of both ends of the tool shaft 4, and a matching platform that matches the oblique cutting platforms 7 is provided on the side of the clamping block 10 close to the tool shaft 4. In this embodiment, after the tool shaft 4 is fixed on the tool box 1, the oblique cutting platforms 7 are closely attached to the matching platforms, so as to facilitate the clamping block 10 to apply a force to the tool shaft 4 and clamp and fix the tool shaft 4. The fixing effect of the tool shaft 4 is improved through the cooperation of the oblique cutting platforms 7 and the matching platforms.

[0032] A T-shaped groove 11 is provided inside the tool box 1. The tensioning block 12 is located at the bottom of the side plate of the tool box 1 and is inside the T-shaped groove 11. The tensioning block 12 has a "convex" structure. In this embodiment, the T-shaped groove 11 is communicated with the groove. Among them, the clamping block 10 is also located inside the T-shaped groove 11. The tensioning block 12 has a "convex" structure so that the tensioning block 12 can be pushed against the bottom of the side plate of the tool box 1.

[0033] The fixing member is a tensioning screw 13. One end of the tensioning screw 13 sequentially penetrates through the clamping block 10 and the tensioning block 12, and the tensioning screw 13 is threadedly connected to the clamping block 10. In this embodiment, a sinking groove is provided on the clamping block 10, and a threaded hole for the tensioning screw 13 to pass through is provided at the sinking groove. Among them, the diameter of the sinking groove is larger than the diameter of the threaded hole, and the screw head of the tensioning screw 13 is located in the sinking groove.

[0034] A locking nut 14 is provided at the lower end of the tensioning screw 13 and is located below the tensioning block 12. A washer 15 is arranged between the locking nut 14 and the tensioning block 12. A protective sleeve 16 is also threadedly connected to the lower end of the tensioning screw 13. The locking nut 14 and the washer 15 are located inside the protective sleeve 16. In this embodiment, after the clamping block 10 is installed on one side of the tool shaft 4, the tensioning screw 13 is threaded through the clamping block 10 and through the tensioning block 12, and then the locking nut 14 is rotated onto the tensioning screw 13. The tensioning block 12 is tightly pressed and fixed at the bottom of the side plate of the tool box 1 through the locking nut 14, so as to achieve the effect of tightly fixing the clamping block 10. The number of locking nuts 14 at the lower end of the tensioning screw 13 is two. The washer 15 is sleeved on the tensioning screw 13. The protective sleeve 16 plays a role in protecting the connection between the locking nut 14 and the tensioning screw 13.

[0035] When the utility model is in use, first place the tool box 1 on the working platform, then place the L-shaped pads 2 in the grooves on the inner sides of the two side plates of the tool box 1 respectively, and then fix the L-shaped pads 2 on the side plates of the tool box 1 through the fixing screws 3. Then place the two ends of the tool shaft 4 on the tops of the horizontal parts of the two L-shaped pads 2 respectively, and then place the clamping blocks 10 on one side of the two ends of the tool shaft 4 respectively. The clamping blocks 10 are located in the T-shaped grooves 11. Then tighten and fix the two clamping blocks 10 respectively. The tensioning screw 13 is threaded through the clamping block 10, and a tensioning block 12 is placed in the T-shaped groove 11. The lower end of the tensioning screw 13 passes through the tensioning block 12 and is connected to the locking nut 14. Rotate the locking nut 14 to tightly press and fix the tensioning block 12, so as to achieve the purpose of tightly fixing the clamping block 10. At this time, the lower cutting table 6 at the bottom of the tool shaft 4 is located on the top of the horizontal part of the L-shaped pad 2. The side cutting table 5 on one side of the tool shaft 4 is in close fit with the inner side of the vertical part of the L-shaped pad 2. The mating table of the clamping block 10 is in close fit with the inclined cutting table 7. The clamping block 10 exerts a force on the tool shaft 4 to cooperate with the L-shaped pad 2 to clamp and fix the tool shaft 4. Finally, protective sleeves 16 are respectively threadedly connected to the lower ends of the two tensioning screws 13.

[0036] After the positioning tooling is assembled, the fixed tool mark 9 of the dummy tool 8 coincides with the contour measurement point of the real tool. Then hoist the tool box 1 onto the tool disc, measure the tool height and radius at the fixed tool mark 9 of the dummy tool 8. If the dimensions are not appropriate, adjust the position of the tool box 1 to drive the dummy tool 8 to move, and then measure the tool height and radius at the fixed tool mark 9 of the dummy tool 8 until the tool height and radius of the dummy tool 8 meet the design requirements, ensuring that the tool height and radius of the fixed tool mark 9 of the dummy tool 8 are within the error range. At this time, the radius and height dimensions of the positioning of the tool box 1 can also be accurately detected, and the positioning of the tool box 1 is completed, realizing the precise positioning of the tool box 1.

[0037] The above-described embodiments are only the preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, any equivalent changes or modifications made to the technical solutions described within the scope of the utility model patent shall be included within the scope of the patent application of the present utility model.

Claims

1. A positioning tooling for the cutter box of the disc cutter of a shield machine, characterized in that It includes a tool box (1) and a tool shaft (4) arranged inside the tool box (1), and a dummy tool (8) is fixedly sleeved in the middle of the tool shaft (4); Locking components for fixing the tool shaft (4) are arranged on both side plates of the tool box (1). The locking components include an L-shaped cushion block (2), a clamping block (10), a tensioning block (12) and a fixing member. The L-shaped cushion block (2) is arranged at the upper part of the side plate of the tool box (1), and the end of the tool shaft (4) is located at the top of the horizontal part of the L-shaped cushion block (2); the clamping block (10) is clamped on one side of the tool shaft (4), the tensioning block (12) is located directly below the clamping block (10), and both the clamping block (10) and the tensioning block (12) are connected to the fixing member.

2. The positioning tooling for the cutter head hob cutter box of a shield machine according to claim 1, characterized in that, A fixed tool mark (9) is arranged at the middle position of the top of the dummy tool (8).

3. The positioning tooling for the cutter head hob cutter box of a shield machine according to claim 1, characterized in that, Grooves are formed on the inner sides of both side plates of the tool box (1), and the L-shaped cushion block (2) is arranged inside the grooves; fixing screws (3) are arranged on both side plates of the tool box (1), and the L-shaped cushion block (2) is connected to the side plate of the tool box (1) through the fixing screws (3).

4. A positioning tooling for the cutter box of the hob on the cutter head of a shield machine according to claim 1, characterized in that, Lower cutting platforms (6) matching the horizontal parts of the L-shaped cushion blocks (2) are arranged at the bottoms of both ends of the tool shaft (4), and side cutting platforms (5) matching the vertical parts of the L-shaped cushion blocks (2) are arranged on one side of both ends of the tool shaft (4).

5. A positioning tooling for the cutter head hob cutter box of a shield machine according to claim 4, characterized in that Oblique cutting platforms (7) are arranged on the other side of both ends of the tool shaft (4), and a matching platform matching the oblique cutting platform (7) is arranged on one side of the clamping block (10) close to the tool shaft (4).

6. A positioning tooling for the cutter head hob cutter box of a shield machine according to claim 1, characterized in that, A T-shaped groove (11) is formed on the inner side of the tool box (1), the tensioning block (12) is located at the bottom of the side plate of the tool box (1) and inside the T-shaped groove (11), and the tensioning block (12) is in a "convex" shape structure.

7. A positioning tooling for the cutter head hob cutter box of a shield machine according to claim 1, characterized in that, The fixing member is a tensioning screw (13). One end of the tensioning screw (13) sequentially penetrates through the clamping block (10) and the tensioning block (12), and the tensioning screw (13) is threadedly connected to the clamping block (10).

8. A positioning tooling for the cutter head hob cutter box of a shield machine according to claim 7, characterized in that, A locking nut (14) located below the tensioning block (12) is arranged at the lower end of the tensioning screw (13). A washer (15) is arranged between the locking nut (14) and the tensioning block (12). A protective sleeve (16) is also threadedly connected to the lower end of the tensioning screw (13), and the locking nut (14) and the washer (15) are located inside the protective sleeve (16).

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