Overall installing and welding positioning device for hobbing cutter holder of shield tunneling machine

Abstract

The utility model relates to a shield tunneling machine hobbing cutter holder integral installing and welding positioning device which is arranged between a left cutter holder and a right cutter holder and comprises a height tool used for controlling the distance between the left cutter holder and the right cutter holder and a coplanar positioning shaft used for controlling cutter shaft supporting faces to be coplanar. The height tool comprises a base frame and height adjusting assemblies, the height adjusting assemblies are arranged at the four corners of the top of the base frame respectively, and each height adjusting assembly comprises a coarse adjusting screw in threaded connection with the base frame and a fine adjusting nut arranged on the coarse adjusting screw. A coplanar positioning shaft is arranged on one side of the base frame, at least two positioning planes perpendicular to each other are arranged on the side wall of the coplanar positioning shaft, and the two positioning planes perpendicular to each other are attached to the supporting face A and the supporting face B respectively. The tool apron positioning device is simple and convenient to use and operate, can quickly and accurately position when the tool aprons are installed and welded, ensures the accurate distance between the left tool apron and the right tool apron and the coplanarity of the supporting surfaces of the tool shaft, and provides safe support for hob installation.

Description

Technical Field

[0001] The utility model relates to the technical field of roller cutter seat manufacturing, in particular to an integral assembly welding positioning device for a roller cutter seat of a shield machine. Background Art

[0002] The structure of the common hob cutter seat of the shield machine is as follows Figure 1 As shown, it includes a left tool seat, a right tool seat and a connecting plate. The left and right tool seats need to be welded together by welding the connecting plate to form an integral tool seat for the installation of the hob.

[0003] During the above welding operation, the spacing between the left and right tool holders needs to be strictly controlled, and the tool shaft support surfaces between the left and right tool holders must be strictly coplanar, that is, there are tool grooves on both the left and right tool holders, and the tool grooves are composed of mutually perpendicular support surfaces A and B, and the arc transition between support surfaces A and B is smooth. It is necessary to ensure that the support surfaces A and B on the left and right tool holders are in the same plane, and the support surfaces B are in the same plane, so as to ensure the accuracy of the subsequent hob tool shaft installation position, such as Figure 2 shown.

[0004] Conventionally, the left and right tool holders are directly welded through the I-shaped connecting plate by manual riveting. In this process, the distance must be controlled and the coplanarity must be ensured, so the position of the tool holder must be adjusted repeatedly. The welding process is time-consuming, and there are often problems such as large deviation in the distance between the left and right tool holders and poor coplanarity of the tool shaft support surfaces corresponding to the left and right tool holders. The distance and coplanarity between the left and right tool holders will seriously affect the installation and use of the hob in the later stage.

[0005] Therefore, a shield machine cutter holder integral assembly welding positioning device was developed to solve the technical bottlenecks of large dimensional deviation of manually riveted cutter holders and poor coplanarity of cutter shaft support surfaces in the prior art, which has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0006] In order to solve the problem that conventional manual riveting makes it inconvenient to adjust the spacing between cutter seats and the coplanarity of the cutter shaft support surfaces is poor, the utility model provides an integral welding positioning device for the roller cutter seat of a shield machine, and designs a tooling for controlling the spacing and coplanarity of the left and right cutter seats, so that both the spacing can be accurately controlled and the coplanarity of the cutter shaft support surfaces of the left and right cutter seats can be controlled.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An integrally welded positioning device for a shield machine cutter holder is arranged between a left cutter holder and a right cutter holder, and includes a height tooling for controlling the distance between the left cutter holder and the right cutter holder and a coplanar positioning shaft for controlling the coplanarity of the cutter shaft support surfaces;

[0009] The height tooling includes a base frame and a height adjustment component. The base frame is the foundation of the height tooling. The height adjustment components are respectively arranged at the four corners of the top of the base frame. The height adjustment component includes a coarse adjustment screw threadedly connected to the base frame and a fine adjustment nut arranged on the coarse adjustment screw, which facilitates the adjustment of the height of the height adjustment component itself, and thus can adjust the height of the entire height tooling and change the distance between the left tool holder and the right tool holder.

[0010] The coplanar positioning shaft is arranged on one side of the base frame. The coplanar positioning shaft is arranged between the tool grooves of the left tool holder and the right tool holder, and only the end parts of the coplanar positioning shaft are respectively placed in the tool grooves. At least two mutually perpendicular positioning planes are provided on the side wall of the coplanar positioning shaft. The purpose is to match the two support surfaces of the tool groove. The arc between the two mutually perpendicular positioning planes is smoothly transitioned. The two mutually perpendicular positioning planes respectively fit the support surface A and the support surface B of the tool groove, ensuring the coplanarity of the tool shaft support surface.

[0011] Further, the base frame is of a rectangular frame structure to ensure stable support for the tool holder. The base frame includes four columns, long rib plates and short rib plates for connecting the columns. The four columns are arranged in a rectangle.

[0012] The long rib plates are arranged on both the front and rear sides of the base frame. The number of long rib plates on each side is two arranged vertically. Each long rib plate connects two adjacent columns. The short rib plates are arranged on both the left and right sides of the base frame. The short rib plates also connect two adjacent columns. The short rib plates and the long rib plates can facilitate the connection and fixation of the four columns.

[0013] Further, the height adjustment components are arranged at the top of each column. The coarse adjustment screw in the height adjustment component is threadedly connected to the column. The protruding height of the coarse adjustment screw is adjustable, and the axial direction of the coarse adjustment screw is consistent with the axial direction of the column.

[0014] A locking nut is also threadedly connected to the coarse adjustment screw. The locking nut abuts against the top end surface of the column to prevent the rotation of the coarse adjustment screw. The top end of the coarse adjustment screw extends upward and is threadedly connected to the fine adjustment nut. One end of the fine adjustment nut is provided with a hemispherical fine adjustment top block. The fine adjustment nut facilitates driving the fine adjustment top block to move together to contact the surface of the tool holder.

[0015] Further, the coplanar positioning shaft is arranged between the two long rib plates on one side of the base frame, improving the connection reliability between the base frame and the coplanar positioning shaft.

[0016] Further, the number of the positioning planes is three. The three positioning planes are arranged in a "凵" shape. The middle positioning plane contacts and fits the long rib plate. The middle positioning plane and an adjacent positioning plane respectively fit the support surface A and the support surface B.

[0017] Through the above technical solution, the beneficial effects of the utility model are:

[0018] The utility model has a reasonable structural design. In order to ensure the accuracy of the distance between the left tool seat and the right tool seat, a height tool is arranged between the left tool seat and the right tool seat. The base frame serves as the basis of the height tool, and it has a certain structural strength. Height adjustment components are arranged at the four corners of the base frame. The height of the height adjustment component itself is adjustable, and there are two-level adjustment means of coarse adjustment and fine adjustment, so that the height of the entire height tool can be adjusted conveniently and accurately, thereby conveniently controlling the distance size between the left tool seat and the right tool seat during assembly welding.

[0019] The utility model designs a coplanar positioning shaft based on the characteristics of the existing tool shaft supporting surface, that is, a supporting surface A and a supporting surface B that are perpendicular to each other, and a smooth arc transition between the supporting surface A and the supporting surface B. The coplanar positioning shaft has at least two mutually perpendicular positioning planes, which can match the supporting surface A and the supporting surface B, accurately control the coplanarity of the tool shaft supporting surfaces on the left tool holder and the right tool holder, and improve the installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a hob cutter seat.

[0021] Figure 2 It is a schematic diagram of the hob cutter seat and hob installation.

[0022] Figure 3 The utility model discloses an axonometric diagram of an integrally welded positioning device for a hob cutter seat of a shield machine.

[0023] Figure 4 The utility model is a front view of an integral assembly welding positioning device for a hob cutter seat of a shield machine.

[0024] Figure 5 The utility model is one of the schematic diagrams of the use state of the integral assembly welding positioning device of the hob cutter seat of a shield machine.

[0025] Figure 6 This is the second schematic diagram of the use status of the integral assembly welding positioning device of the hob cutter seat of a shield machine of the utility model.

[0026] The numbers in the accompanying drawings are: 1 left tool holder, 2 right tool holder, 3 connecting plate, 5 support surface A, 6 support surface B, 7 tool shaft, 8 hob, 9 coplanar positioning axis, 91 positioning plane, 10 base frame, 101 column, 102 short rib plate, 103 long rib plate, 11 height adjustment assembly, 12 coarse adjustment screw, 13 fine adjustment nut, 14 locking nut, 15 fine adjustment top block. DETAILED DESCRIPTION

[0027] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0028] like Figure 3~Figure 6 As shown, a shield machine hob cutter seat integrally welded positioning device is arranged between the left cutter seat 1 and the right cutter seat 2, and is used to adjust the spacing between the left and right cutter seats and ensure the coplanarity of the cutter shaft support surface. It includes a height tooling for controlling the spacing between the left cutter seat 1 and the right cutter seat 2 and a coplanar positioning shaft 9 for controlling the coplanarity of the cutter shaft support surface.

[0029] The height tooling can accurately adjust the distance between the left and right tool holders to ensure the accuracy of the distance. The height tooling includes a base frame 10 and a height adjustment component 11. The base frame 10 is the installation base of the height adjustment component 11. The base frame 10 is a rectangular frame structure. The base frame 10 has a certain structural strength. The base frame 10 includes four columns 101, a long rib plate 103 and a short rib plate 102 for connecting the columns 101. Figure 3 and Figure 4 shown.

[0030] The four columns 101 are arranged in a rectangular shape, each column 101 is a cylinder, and the upper and lower end surfaces of the columns 101 are both horizontal planes. Long rib plates 103 are arranged on both the front and rear sides of the base frame 10, and the number of long rib plates 103 on each side is two arranged up and down, and each long rib plate 103 connects two adjacent columns 101; short rib plates 102 are arranged on both the left and right sides of the base frame 10, and the short rib plates 102 also connect two adjacent columns 101. Therefore, the four columns 101 can be connected and fixed together by the short rib plates 102 and the long rib plates 103 to form an integral rectangular frame structure.

[0031] The height of the height adjustment component 11 is adjustable. When the height adjustment component 11 is installed, the four corners of the top of the base frame 10 are respectively provided with height adjustment components 11, that is, there are four height adjustment components 11, and a height adjustment component 11 is arranged at the top of each column 101, and the height adjustment components 11 and the columns 101 correspond one to one.

[0032] The height adjustment assembly 11 includes a coarse adjustment screw 12 threadedly connected to the base frame 10 and a fine adjustment nut 13 arranged on the coarse adjustment screw 12. Specifically, the coarse adjustment screw 12 in the height adjustment assembly 11 is threadedly connected to the column 101, and the axial direction of the coarse adjustment screw 12 is consistent with the axial direction of the column 101. The height of the column 101 is fixed. After the coarse adjustment screw 12 is installed on the column 101, it is equivalent to extending the height of the column 101, and the extension length is variable. By twisting the coarse adjustment screw 12, the height of the height tooling can be roughly adjusted.

[0033] A locking nut 14 is also threadedly connected to the coarse adjustment screw 12. The locking nut 14 abuts against the top surface of the column 101. The locking nut 14 plays a locking role only after the coarse adjustment screw 12 is used. That is, first rotate the coarse adjustment screw 12 to a certain height, and then rotate the locking nut 14 to make it abut against the upper end surface of the column 101, so as to fix the coarse adjustment screw 12 and prevent it from rotating.

[0034] The top end of the coarse adjustment screw 12 extends upward and is threadedly connected with a fine adjustment nut 13. One end of the fine adjustment nut 13 is provided with a hemispherical fine adjustment top block 15. The combination of the fine adjustment nut 13 and the hemispherical fine adjustment top block 15 is equivalent to a cap nut. After the coarse adjustment screw 12 is fixed, manually rotate the fine adjustment nut 13 to drive the fine adjustment top block 15 to finely adjust the height, and the height of the height fine adjustment tooling can be finely adjusted.

[0035] A coplanar positioning shaft 9 is arranged on one side of the base frame 10, that is, the coplanar positioning shaft 9 is arranged between two long rib plates 103 on one side of the base frame 10. That is, the base frame 10 and the coplanar positioning shaft 9 are fixedly connected together. The coplanar positioning shaft 9 can accurately control the coplanarity of the tool shaft support surface. Furthermore, the coplanar positioning shaft 9 is arranged between the tool slots of the left tool seat 1 and the right tool seat 2. Combining with the structural characteristics of the tool slot, that is, the tool slot has mutually perpendicular support surfaces A and B. On this basis, at least two mutually perpendicular positioning planes 91 are opened on the side wall of the coplanar positioning shaft 9.

[0036] Here, the number of the positioning planes 91 is three, and the three positioning planes 91 are arranged in a "U" shape. The middle positioning plane 91 is in contact and fixed with the long rib plate 103. The two mutually perpendicular positioning planes 91 are smoothly transitioned by an arc. The two mutually perpendicular positioning planes 91 are respectively in contact with the support surfaces A and B of the tool slot, that is, the middle positioning plane 91 and an adjacent positioning plane 91 are respectively in contact with the support surfaces A and B, ensuring the coplanarity of the tool shaft support surface and preventing misalignment errors.

[0037] Such as Figure 5 and Figure 6 As shown, the steps of assembling and welding the hob tool seat of the present invention are as follows: Step 1: Horizontally place the right tool seat 2 on the riveting and welding platform. Step 2: Place the height fine adjustment tooling and the coplanar positioning shaft 9 on the right tool seat 2 together. The lower ends of the four columns 101 are in contact with the upper surface of the right tool seat 2. Step 3: Taking the upper surface of the right tool seat 2 as the reference, adjust the control height of the height fine adjustment tooling: first coarsely adjust the height by adjusting the coarse adjustment stud and fix it with the locking nut 14, and then finely adjust the height by adjusting the fine adjustment nut 13. Step 4: Repeat Step 3. After the heights of the four height adjustment components 11 are adjusted qualified, horizontally move the coplanar positioning shaft 9 in the tool slot of the right tool seat 2 to make the two mutually perpendicular positioning planes 91 at the lower end of the coplanar positioning shaft 9 be in contact with the support surfaces A and B.

[0038] Step 5. Place the left tool holder 1 horizontally on the height fixture, and the four height adjustment components 11 are used to support the left tool holder 1. The fine-tuning top block 15 contacts the lower surface of the left tool holder 1. At this time, the upper end of the coplanar positioning axis 9 is placed in the tool groove of the left tool holder 1. The left tool holder 1 is slightly moved horizontally so that the support surface A and the support surface B of the tool groove in the left tool holder 1 fit the two mutually perpendicular positioning planes 91 at the upper end of the coplanar positioning axis 9. Step 6. After the spacing dimensions of the left tool holder 1 and the right tool holder 2 and the coplanarity of the tool shaft support surface are adjusted, an I-shaped connecting plate 3 is arranged between the left tool holder 1 and the right tool holder 2 and riveted and welded. The left tool holder 1 and the right tool holder 2 are welded into an integral tool holder through the connecting plate 3. Step 7. After the integral tool holder is welded, the height fixture together with the coplanar positioning axis 9 can be horizontally moved out of the tool holder.

[0039] In summary, the utility model can achieve the accuracy of the coplanarity of the support surface A and the support surface B through the coplanar positioning shaft 9, and achieve accurate positioning of the distance between the left tool seat 1 and the right tool seat 2 through the coarse adjustment screw 12 and the fine adjustment nut 13, thereby achieving precise control of the distance between the left tool seat 1 and the right tool seat 2 and precise control of the coplanarity of the tool axis support surfaces of the left tool seat 1 and the right tool seat 2, effectively ensuring the riveting accuracy of the left and right tool seats commonly used in the shield machine and solving the bottleneck of manual riveting difficulties.

[0040] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A shield machine roller cutter seat integral assembly welding positioning device, arranged between a left cutter seat (1) and a right cutter seat (2), characterized in that: It includes a height tooling for controlling the distance between the left tool holder (1) and the right tool holder (2) and a coplanar positioning shaft (9) for controlling the coplanarity of the tool shaft support surfaces. The height tooling includes a base frame (10) and a height adjustment assembly (11). The height adjustment assemblies (11) are respectively arranged at the four corners of the top of the base frame (10). The height adjustment assembly (11) includes a coarse adjustment screw rod (12) threadedly connected to the base frame (10) and a fine adjustment nut (13) arranged on the coarse adjustment screw rod (12). The coplanar positioning shaft (9) is arranged on one side of the base frame (10). The coplanar positioning shaft (9) is arranged between the tool grooves of the left tool holder (1) and the right tool holder (2). At least two mutually perpendicular positioning planes (91) are provided on the side wall of the coplanar positioning shaft (9). The arc between the two mutually perpendicular positioning planes (91) is smoothly transitioned. The two mutually perpendicular positioning planes (91) respectively fit the support surface A and the support surface B of the tool groove.

2. The shield machine hob cutter seat integral assembly welding positioning device according to claim 1, characterized in that: The base frame (10) is of a rectangular frame structure. The base frame (10) includes four columns (101), long rib plates (103) and short rib plates (102) for connecting the columns (101). The four columns (101) are arranged in a rectangle. The long rib plates (103) are arranged on both the front and rear sides of the base frame (10). The number of long rib plates (103) on each side is two arranged vertically. Each long rib plate (103) connects two adjacent columns (101). The short rib plates (102) are arranged on both the left and right sides of the base frame (10). The short rib plates (102) also connect two adjacent columns (101).

3. The shield machine hob cutter seat integral assembly welding positioning device according to claim 2, characterized in that: The height adjustment assemblies (11) are arranged at the top of each column (101). The coarse adjustment screw rod (12) in the height adjustment assembly (11) is threadedly connected to the column (101). The axial direction of the coarse adjustment screw rod (12) is consistent with the axial direction of the column (101). A locking nut (14) is also threadedly connected to the coarse adjustment screw rod (12). The locking nut (14) abuts against the top end surface of the column (101). The top end of the coarse adjustment screw rod (12) extends upward and is threadedly connected to the fine adjustment nut (13). A hemispherical fine adjustment top block (15) is arranged at one end of the fine adjustment nut (13).

4. The shield machine hob cutter seat integral assembly welding positioning device according to claim 2, characterized in that: The coplanar positioning shaft (9) is arranged between the two long rib plates (103) on one side of the base frame (10).

5. The shield machine hob cutter seat integral assembly welding positioning device according to claim 4, characterized in that: The number of the positioning planes (91) is three. The three positioning planes (91) are arranged in a "U" shape. The middle positioning plane (91) contacts and fits the long rib plate (103). The middle positioning plane (91) and an adjacent positioning plane (91) respectively fit the support surface A and the support surface B.

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