Adjustable grating structure for heading machine cutterhead, heading machine cutterhead and heading machine

Abstract

The utility model provides an adjustable grating structure for a heading machine cutterhead, the heading machine cutterhead and a heading machine, and belongs to the technical field of heading equipment. The adjustable grating structure comprises an installation base body fixed to the cutter head body and at least two gratings detachably fixed to the installation base body through first fasteners, the gratings are arranged at intervals, and connecting holes connected with the first fasteners are formed in the installation base body. The installation base body is further provided with standby holes which are connected with the corresponding first fasteners in a matched mode when the fixing position of at least one grid is changed in the grid arrangement direction, and plugging pieces are detachably installed in the standby holes. After the grilles are detached, the grilles can be fixed again through the spare holes, the distance between the grilles can be changed, the size of the slag inlet can be adjusted in the radial direction, and the grilles are suitable for the cutterhead with the slag inlet size which cannot be adjusted in the circumferential direction or does not need to be adjusted in the circumferential direction. Meanwhile, the blocking piece can prevent the unused spare hole from being blocked due to the fact that muck enters the spare hole in the normal working process of the heading machine.

Description

Technical Field

[0001] The utility model relates to an adjustable grille structure for a tunneling machine cutter head, a tunneling machine cutter head and a tunneling machine, belonging to the technical field of tunneling equipment. Background Art

[0002] During TBM construction, slag discharge will greatly affect construction efficiency. As a structure for controlling slag discharge, the grating is often greatly reduced in slag discharge efficiency due to factors such as geological fragmentation during construction and mud cakes of slag. In this case, the grating needs to be cut off or added. Adding gratings involves welding processes. However, some working conditions, such as coal mines, contain flammable and explosive materials such as dust and gas, which will strictly control the welding process, making construction extremely inconvenient.

[0003] The Chinese utility model patent with the authorization announcement number CN219672638U discloses a cutter disc structure and a tunnel boring machine, wherein a scraping mechanism is provided at the slag inlet of the cutter disc structure, and the mounting seat and the grille of the scraping mechanism are respectively provided on both sides of the slag inlet in the circumferential direction of the disc body, and a plurality of grilles are provided, and the plurality of grilles are arranged at intervals along the radial direction of the disc body, and the grilles are detachably arranged at the slag inlet, and connected to the inner wall of the slag inlet by bolts. The scraper is directly mounted on the mounting seat or mounted on the mounting seat through a pad, and the area of ​​the slag inlet covered by the scraping mechanism is adjusted by installing pads of different numbers or thicknesses between the scraper and the mounting seat, and the grille of the corresponding size is replaced at the same time, thereby changing the opening size of the slag inlet in the circumferential direction of the disc body, thereby realizing the adjustable opening rate of the cutter disc.

[0004] The above-mentioned grille is connected to the inner wall of the slag inlet (i.e., the mounting base) by screws (i.e., fasteners). The mounting base is provided with connecting holes that cooperate with the fasteners. The grille can be replaced, so that the size of the slag inlet can be adjusted in conjunction with the scraper. This method can only adjust the size of the slag inlet in the circumferential direction. However, the circumferential size of the slag inlet on some cutter discs is inherently limited, and the size of the slag inlet needs to be adjusted in the radial direction. The existing method cannot adjust the distance between two adjacent grilles, and its use is limited. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable grille structure for a tunnel boring machine cutter head to solve the problem in the prior art that the size of the slag inlet cannot be adjusted when it is necessary to adjust the size in the radial direction; the purpose of the utility model is also to provide a tunnel boring machine cutter head and a tunnel boring machine to solve the above-mentioned problem.

[0006] In order to achieve the above-mentioned purpose, the adjustable grille structure for the cutter head of the tunnel boring machine in the utility model adopts the following technical solutions:

[0007] An adjustable grille structure for a roadheader cutter head, comprising a mounting base for fixing on the cutter head body and at least two grilles detachably fixed on the mounting base by first fasteners. The grilles are arranged at intervals. Connection holes for mating connection with the first fasteners are provided on the mounting base. Spare holes for mating connection with the corresponding first fasteners when at least one grille changes its fixed position along the grille arrangement direction are also provided on the mounting base. Plugging members are detachably installed in each of the spare holes.

[0008] The beneficial effects of the above technical solution are as follows: The utility model belongs to an improved invention. The improvement lies in that spare holes for mating connection with the corresponding first fasteners when at least one grille changes its fixed position along the grille arrangement direction are also provided on the mounting base. In this way, after removing the grille, the grille can be fixed again using the spare holes, thereby changing the distance between the grilles, and further adjusting the size of the slag inlet in the radial direction, which is applicable to cutter heads that cannot or do not need to adjust the size of the slag inlet in the circumferential direction. At the same time, plugging members are detachably installed in each of the spare holes to prevent the unused spare holes from entering the muck during the normal operation of the roadheader and causing blockage, and further causing problems that are difficult to clean during later use. This problem is perfectly solved by the detachably installed plugging members.

[0009] Furthermore, the adjustable grille structure for a roadheader cutter head further includes a partition located between two adjacent grilles. The plugging member is a second fastener, and the partition is detachably fixed on the mounting base by the second fastener.

[0010] Furthermore, the partition and the grille are arranged continuously without gaps. In the grille arrangement direction, the distance between any two adjacent holes among the connection holes and the spare holes is equal.

[0011] Furthermore, in the grille arrangement direction, the distance between any two adjacent holes among the connection holes and the spare holes is equal.

[0012] Furthermore, the grille includes a base plate and grille bars fixed on the base plate. Both the base plate and the partition are rectangular plates, and the two ends in the length direction of the base plate are flush with the two ends in the length direction of the partition respectively.

[0013] Furthermore, the width of the partition is smaller than the width of the base plate. The base plate is detachably fixed on the mounting base by at least two columns of first fasteners arranged along the width direction, and the partition is detachably fixed on the mounting base by at least two columns of second fasteners arranged along the width direction. The number of columns of the second fasteners is less than the number of columns of the first fasteners.

[0014] Furthermore, the first fastener is a first screw, and both the connection hole and the spare hole are threaded holes.

[0015] Furthermore, the grille includes a substrate and grille bars fixed to the substrate. The grille bars are fixed to one end of the substrate, and mounting holes for installing the first fasteners and arranged in a rectangular array are provided at the other end and the middle of the substrate.

[0016] To achieve the above object, the cutter head of the roadheader in the present utility model adopts the following technical solution:

[0017] The cutter head of the roadheader includes a disc body and an adjustable grille structure arranged on the disc body. The adjustable grille structure includes a mounting base for being fixed to the cutter head disc body and at least two grilles detachably fixed to the mounting base through the first fasteners. The grilles are arranged at intervals. Connection holes for mating connection with the first fasteners are provided on the mounting base. Spare holes for mating connection with the corresponding first fasteners when at least one grille changes its fixed position along the grille arrangement direction are also provided on the mounting base. Plugging members are detachably installed in each of the spare holes.

[0018] The beneficial effects of the above technical solution are as follows: The present utility model belongs to an improved invention. The improvement lies in that spare holes for mating connection with the corresponding first fasteners when at least one grille changes its fixed position along the grille arrangement direction are also provided on the mounting base. In this way, after removing the grille, the spare holes can be used to re-fix the grille, thereby changing the spacing between the grilles, and further adjusting the size of the slag inlet in the radial direction, which is applicable to cutter heads that cannot or do not need to adjust the size of the slag inlet in the circumferential direction. At the same time, plugging members are detachably installed in each of the spare holes to prevent the unused spare holes from entering the muck during the normal operation of the roadheader and causing blockage, and further causing difficult cleaning problems during later use. This problem is perfectly solved by the detachably installed plugging members.

[0019] Furthermore, the adjustable grille structure further includes a partition located between two adjacent grilles. The plugging member is a second fastener, and the partition is detachably fixed to the mounting base through the second fastener.

[0020] Furthermore, the partition and the grille are arranged continuously without gaps. In the grille arrangement direction, the spacing between any two adjacent holes among the connection holes and the spare holes is equal.

[0021] Furthermore, in the grille arrangement direction, the spacing between any two adjacent holes among the connection holes and the spare holes is equal.

[0022] Furthermore, the grille includes a substrate and grille bars fixed to the substrate. Both the substrate and the partition are rectangular plates, and the two ends in the length direction of the substrate are flush with the two ends in the length direction of the partition respectively.

[0023] Further, the width of the partition is less than the width of the substrate. The substrate is detachably fixed to the mounting base by at least two columns of first fasteners arranged along the width direction, and the partition is detachably fixed to the mounting base by at least two columns of second fasteners arranged along the width direction. The number of columns of the second fasteners is less than the number of columns of the first fasteners.

[0024] Further, the first fastener is a first screw, and both the connection hole and the spare hole are threaded holes.

[0025] Further, the grille includes a substrate and grille bars fixed to the substrate. The grille bars are fixed to one end of the substrate, and mounting holes for installing the first fasteners and arranged in a rectangular array are provided at the other end and the middle of the substrate.

[0026] To achieve the above object, the roadheader in the present utility model adopts the following technical solution:

[0027] A roadheader, including a main machine, the main machine includes a cutter head, the cutter head includes a disc body and an adjustable grille structure arranged on the disc body. The adjustable grille structure includes a mounting base for being fixed to the cutter head disc body and at least two grilles detachably fixed to the mounting base by first fasteners. The grilles are arranged at intervals. Connection holes for mating and connecting with the first fasteners are provided on the mounting base, and spare holes for mating and connecting with the corresponding first fasteners when at least one grille changes its fixed position along the grille arrangement direction are further provided on the mounting base. Plugging members are detachably installed in each of the spare holes.

[0028] The beneficial effects of the above technical solution are as follows: The present utility model belongs to an improved invention. The improvement lies in that spare holes for mating and connecting with the corresponding first fasteners when at least one grille changes its fixed position along the grille arrangement direction are further provided on the mounting base. In this way, after removing the grille, the spare holes can be used to re-fix the grille, thereby changing the spacing between the grilles, and further adjusting the size of the slag inlet in the radial direction, which is applicable to cutter heads that cannot or do not need to adjust the size of the slag inlet in the circumferential direction. At the same time, plugging members are detachably installed in each of the spare holes to prevent the unused spare holes from entering the muck during the normal operation of the roadheader and causing blockage, and further causing difficult cleaning problems during later use. This problem is perfectly solved by the detachably installed plugging members.

[0029] Further, the adjustable grille structure further includes a partition located between two adjacent grilles. The plugging member is a second fastener, and the partition is detachably fixed to the mounting base by the second fastener.

[0030] Further, the partition and the grille are arranged continuously without gaps. In the grille arrangement direction, the distance between any two adjacent holes among the connection holes and the spare holes is equal.

[0031] Furthermore, in the grid arrangement direction, the distance between any two adjacent holes among the connecting holes and the spare holes is equal.

[0032] Furthermore, the grid includes a substrate and grid bars fixed on the substrate. Both the substrate and the partition are rectangular plates, and the two ends in the length direction of the substrate are flush with the two ends in the length direction of the partition respectively.

[0033] Furthermore, the width of the partition is smaller than the width of the substrate. The substrate is detachably fixed on the installation base by at least two columns of first fasteners arranged along the width direction, and the partition is detachably fixed on the installation base by at least two columns of second fasteners arranged along the width direction. The number of columns of the second fasteners is less than the number of columns of the first fasteners.

[0034] Furthermore, the first fastener is a first screw, and both the connecting hole and the spare hole are threaded holes.

[0035] Furthermore, the grid includes a substrate and grid bars fixed on the substrate. The grid bars are fixed at one end of the substrate, and mounting holes for installing the first fasteners and arranged in a rectangular array are provided at the other end and the middle part of the substrate. Description of the Drawings

[0036] Figure 1 is a partial perspective view (before grid adjustment) of an embodiment of the cutter head of the roadheader of the present utility model;

[0037] Figure 2 is a partial front view (before grid adjustment) of an embodiment of the cutter head of the roadheader of the present utility model;

[0038] Figure 3 is Figure 2 the sectional view taken along the line A-A in

[0039] Figure 4 is Figure 3 the sectional view taken along the line B-B in

[0040] Figure 5 is Figure 3 the structural diagram of the structure shown in

[0041] In the figure: 100, disc body; 101, slag inlet; 1, installation base; 2, grid; 21, substrate; 22, grid bars; 3, partition; 4, first screw; 5, second screw; 6, single-row plate. Detailed Description of the Embodiment

[0042] The features and performances of the present utility model will be further described in detail below in conjunction with the embodiments.

[0043] In view of the technical problems existing in the prior art, the basic technical concept of the present utility model is to provide spare holes on the installation base, so that after the grille is removed, the spare holes can be used to refix the grille, thereby changing the spacing between the grilles, and further adjusting the size of the slag inlet in the radial direction.

[0044] An embodiment of the cutter head of the roadheader in the present utility model:

[0045] As Figure 1 and Figure 2 shown, the cutter head of the roadheader includes a disk body 100 and an adjustable grille structure provided on the disk body 100. A slag inlet 101 is provided on the disk body 100, and the adjustable grille structure is provided at the slag inlet 101. Combining Figure 3 and Figure 4 shown, the adjustable grille structure includes an installation base 1 fixed on the disk body 100 and at least two grilles 2 detachably fixed on the installation base 1 through first fasteners. The installation base 1 is actually also a shroud surrounding the slag inlet 101. The grilles 2 within one slag inlet 101 are arranged at intervals. Except for the grilles located on the outer peripheral surface of the disk body 100, the remaining grilles are arranged at intervals in the radial direction of the cutter head. And before the position of the grilles is adjusted, there are a total of four grilles 2 arranged in the radial direction of the cutter head.

[0046] Connection holes for cooperating with the first fasteners are provided on the installation base 1 to fix the grilles 2. In this embodiment, the above-mentioned first fasteners are first screws 4, so the connection holes are threaded holes. In addition, spare holes for cooperating with the corresponding first fasteners when at least one grille 2 changes its fixed position along the grille arrangement direction are also provided on the installation base 1. Therefore, the spare holes are also threaded holes, and the sizes of the spare holes are exactly the same as those of the connection holes. This is convenient for the initial installation of the grilles 2, and when the position needs to be adjusted, it is convenient to disassemble the grilles 2, and at the same time, it is also convenient to refix the grilles 2 again. Of course, if subsequent adjustments are still needed, it is still convenient for adjustment operations.

[0047] At the same time, plugging members can be detachably installed in each spare hole to prevent the unused spare holes from entering the slag during the normal operation of the roadheader and causing blockage, which will further cause the problem of difficult cleaning during later use. For the convenience of connection, the plugging members adopt second fasteners, that is, second screws 5. The second screws 5 can be directly connected with the spare holes, which is more convenient to use.

[0048] As Figures 1 to 4As shown in the figure, the adjustable grille structure further includes a partition 3 located between two adjacent grilles 2. The partition 3 is detachably fixed to the installation base 1 by a second screw 5, that is, the second screw 5 passes through the partition 3 before connecting to the spare hole. The screw perforation on the partition 3 is a countersunk hole, so the partition 3 can protect the head of the second screw 5 and prevent wear during the normal operation of the roadheader. At the same time, the partition 3 also fills the gap between two adjacent grilles 2, preventing excessive slag accumulation here and making it difficult to disassemble the second screw 5.

[0049] Furthermore, in this embodiment, the partition 3 and the grille 2 are arranged continuously without gaps. There are three partitions 3 in total, and each is arranged between two grilles 2. The gapless arrangement can prevent muck from entering and facilitate the subsequent adjustment of the position of the grille 2. At the same time, in the grille arrangement direction, the distance between any two adjacent holes among the connection holes and the spare holes is equal, that is, the distance between any two adjacent screws 4 in the grille arrangement direction is equal. This makes it convenient to swap the positions of the grilles 2. After the grille 2 is translated, it can be fixed, and there are more optional fixing positions, and the adjustment range of the distance between adjacent grilles 2 is larger.

[0050] In this embodiment, the grille 2 includes a base plate 21 and grille bars 22 welded to the base plate 21. Both the base plate 21 and the partition 3 are rectangular plates. The two ends of the base plate 21 in the length direction are flush with the two ends of the partition 3 in the length direction to avoid the influence of the partition 3 on the slag inlet effect. At the same time, the width of the partition 3 is smaller than the width of the base plate 21. The base plate 21 is detachably fixed to the installation base 1 by at least two columns of first screws 4 arranged along the width direction, and the partition 3 is detachably fixed to the installation base 1 by at least two columns of second screws 5 arranged along the width direction. The number of columns of the second screws 5 is less than the number of columns of the first screws 4, making the fixing effect of the base plate 21 better and improving the use reliability of the grille 2. Specifically, the number of columns of the second screws 5 is two, and there are three second screws 5 in each column. The number of columns of the first screws 4 is three, and there are three first screws 4 in each column. For a grille 2, the grille bars 22 are fixed to one end of the base plate 21, and the 3*3 matrix arrangement of the first screws 4 is concentrated at the other end and the middle of the base plate 21, that is, installation holes for installing the first screws 4 and arranged in a 3*3 rectangular array are provided at the other end and the middle of the base plate 21.

[0051] During the use of the roadheader cutter head, according to the geological conditions, when it is necessary to adjust the distance between the grilles, so as to adjust the size of the slag inlet in the radial direction and control the slag discharge size, remove each grille 2 and partition 3 arranged in the radial direction, and re-fix the appropriate number of grilles 2 at the required positions, and fix the partition 3 at the remaining positions. As Figure 5As shown, the number of the adjusted grilles 2 is one less than that before adjustment, the spacing between the grilles becomes larger, and the slag inlet becomes larger. The number of the partitions 3 is one more than that before adjustment. During actual manufacturing, multiple partitions 3 with the same specifications can be provided, and the partition 3 can be fixed at the position where the spare holes are exposed according to needs, ensuring that the partition 3 and the grille 2 are arranged continuously without gaps. After adjustment, one partition 3 may be clamped between adjacent grilles 2, and of course, two or more partitions 3 may also be clamped. In addition, during manufacturing, multiple single-row plates 6 with only one row of screw mounting holes can also be provided, so that when a row of exposed spare holes is left at the edge position, or between the grille 2 and the partition 3, or between two adjacent partitions 3, they can also be covered.

[0052] In other embodiments of the roadheader cutter head: The first fasteners for fixing the base plate and the second fasteners for fixing the partition can be pins, such as tapered pins or spring pins. At this time, the pins can also be disassembled, and both the connection holes and the spare holes are smooth holes.

[0053] In other embodiments of the roadheader cutter head: The single-row plate may not be provided, and only the partition may be provided.

[0054] In other embodiments of the roadheader cutter head: The grille bars can also extend from one end of the base plate to the other end. At this time, the mounting holes for installing the first fasteners are arranged on both sides of the grille bars.

[0055] In other embodiments of the roadheader cutter head: When the width of the partition is less than the width of the base plate, the number of columns of the second fasteners for fixing the partition can be one column, while the number of columns of the first fasteners for fixing the base plate is two columns. In other embodiments, regardless of the specific number of columns of the fasteners for fixing the partition and the base plate, each column can have only two fasteners.

[0056] In other embodiments of the roadheader cutter head: The width of the partition can be equal to the width of the base plate. At this time, the number of columns of the second fasteners for fixing the partition is equal to the number of columns of the first fasteners for fixing the base plate.

[0057] In other embodiments of the roadheader cutter head: When both the base plate and the partition are rectangular plates, the length of the partition can be less than the length of the base plate. At this time, only one end of the partition is aligned with the base plate in the length direction, and the other end is not aligned.

[0058] In other embodiments of the roadheader cutter head: In the grille arrangement direction, the spacing between any two adjacent holes among the connection holes and the spare holes can be unequal. For example, the spacing between any two adjacent holes gradually increases or gradually decreases along the arrangement direction. At this time, the partition and the grille may not be arranged continuously without gaps, but there are intervals, but as long as the spare holes are sealed.

[0059] In other embodiments of the roadheader cutter head: The adjustable grille structure does not include a partition plate, and the spare holes are directly blocked by second fasteners. The form of the second fastener is the same as that of the first fastener, both being screws, taper pins or spring pins. Of course, fasteners can also not be used as blocking members. For example, rubber plugs can be used, and the rubber plugs can also play the role of facilitating blocking and disassembly.

[0060] In other embodiments of the roadheader cutter head: When the adjustable grille structure does not include a partition plate, in the grille arrangement direction, the distance between any two adjacent holes among the connecting holes and the spare holes can still be equal. Of course, it can also be unequal. For example, the distance between any two adjacent holes gradually increases or gradually decreases along the arrangement direction.

[0061] In other embodiments of the roadheader cutter head: There can be only two grilles arranged radially. In this case, only the position of one grille needs to be changed to adjust the distance between the two grilles. Of course, if there are more than three grilles arranged radially, only one grille at the edge position can also be changed to change the distance between two of the grilles.

[0062] An embodiment of the adjustable grille structure for the roadheader cutter head in the present utility model is: The specific structure of the adjustable grille structure for the roadheader cutter head is the same as the adjustable grille structure in the above-mentioned roadheader cutter head embodiment, and will not be repeated here.

[0063] An embodiment of the roadheader in the present utility model is: The roadheader includes a main machine, the main machine includes a cutter head, the cutter head includes a disk body and an adjustable grille structure arranged on the disk body. The adjustable grille structure is the same as the adjustable grille structure in the above-mentioned roadheader cutter head embodiment, and will not be repeated here.

[0064] The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. All equivalent structural changes made by using the content of the specification and drawings of the present utility model should, by the same token, be included in the protection scope of the present utility model.

Claims

1. An adjustable grille structure for a cutterhead of a roadheader, comprising a mounting base for fixing on a cutterhead body and at least two grilles detachably fixed on the mounting base by a first fastener, wherein the grilles are arranged at intervals, and a connecting hole for connecting with the first fastener is provided on the mounting base, characterized in that: The installation base is also provided with spare holes for cooperating with corresponding first fasteners when at least one grille changes its fixed position along the grille arrangement direction, and a blocking piece can be detachably installed in each spare hole.

2. The adjustable grille structure for a tunnel boring machine cutterhead according to claim 1, characterized in that: The adjustable grille structure for the cutter head of the tunnel boring machine also includes a partition plate located between two adjacent grilles, and the blocking piece is a second fastener, through which the partition plate is detachably fixed to the mounting base.

3. The adjustable grille structure for a tunnel boring machine cutterhead according to claim 2, characterized in that: The partitions and the grilles are arranged continuously without gaps, and in the arrangement direction of the grilles, the spacing between any two adjacent holes in each connecting hole and the spare hole is equal.

4. The adjustable grille structure for a tunnel boring machine cutterhead according to claim 1, characterized in that: In the grid arrangement direction, the spacing between any two adjacent holes in each connection hole and spare hole is equal.

5. The adjustable grid structure for a tunnel boring machine cutter head according to claim 2 or 3, characterized in that: The grid comprises a base plate and grid bars fixed on the base plate. Both the base plate and the partition plate are rectangular plates. The two ends of the base plate in the length direction are flush with the two ends of the partition plate in the length direction.

6. The adjustable grille structure for a tunnel boring machine cutterhead according to claim 5, characterized in that: The width of the partition is smaller than the width of the substrate. The substrate is removably fixed to the mounting base by at least two rows of first fasteners arranged along the width direction. The partition is removably fixed to the mounting base by at least two rows of second fasteners arranged along the width direction. The number of rows of second fasteners is smaller than the number of rows of first fasteners.

7. The adjustable grille structure for a tunnel boring machine cutter head according to any one of claims 1 to 4, characterized in that: The first fastener is a first screw, and the connecting hole and the spare hole are both threaded holes.

8. The adjustable grille structure for a tunnel boring machine cutter head according to any one of claims 1 to 4, characterized in that: The grid comprises a base plate and grid bars fixed on the base plate, wherein the grid bars are fixed on one end of the base plate, and mounting holes arranged in a rectangular array and used for mounting first fasteners are arranged at the other end and the middle of the base plate.

9. A tunnel boring machine cutterhead, comprising a cutterhead body and an adjustable grid structure arranged on the cutterhead body, characterized in that: The adjustable grid structure is the adjustable grid structure for the cutter head of a tunnel boring machine as described in any one of claims 1 to 8.

10. A tunnel boring machine, comprising a main machine, the main machine comprising a cutter disc, the cutter disc comprising a disc body and an adjustable grid structure arranged on the disc body, characterized in that: The adjustable grid structure is the adjustable grid structure for the cutter head of a tunnel boring machine as described in any one of claims 1 to 8.

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