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

Abstract

The utility model relates to the field of shield tunneling machine hobs, and discloses a shield tunneling machine hob holder integral installing and welding positioning device which comprises an outer cutter holder and an inner cutter holder, and the inner cutter holder is arranged on one side of the outer cutter holder. The outer tool apron comprises a positioning pin penetrating through the outer tool apron, and one side, close to the outer tool apron, of the inner tool apron is connected with one end of the positioning pin; the adjusting plate is installed on the outer tool apron, the end, away from the inner tool apron, of the positioning pin is connected with the adjusting plate, and the adjusting plate is arranged to move on the outer tool apron. In the utility model, the extension length of the positioning pin is adjusted by controlling the first screw rod through the knob, the relative position precision between the inner tool apron and the outer tool apron is always kept within an ideal range, the distance change of the tool aprons caused by thermal expansion and cold contraction can be counteracted by adjusting the extension length of the positioning pin, and the installation error of the tool aprons caused by welding deformation is avoided; and the welding quality of the tool apron is ensured.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machine cutterheads, and in particular to an integral welding and positioning device for tunnel boring machine cutterhead holders. Background Technology

[0002] The cutterhead holder commonly used in tunnel boring machines includes two outer cutterheads, two inner cutterheads, and a connecting plate. The two outer cutterheads and two inner cutterheads need to be welded together into a whole cutterhead by welding the connecting plate, which is used for the installation of the cutterheads.

[0003] A search revealed that CN222536718U discloses an integral welding and positioning device for a tunnel boring machine cutterhead holder, arranged between the left and right cutterhead holders. The device includes a height fixture for controlling the distance between the left and right cutterhead holders and a coplanar positioning shaft for controlling the coplanarity of the cutter shaft support surfaces. The height fixture includes a base frame and a height adjustment assembly. The four corners of the top of the base frame are respectively provided with height adjustment assemblies. The height adjustment assembly includes a coarse adjustment screw threaded to the base frame and a fine adjustment nut provided on the coarse adjustment screw.

[0004] The existing integrated welding and positioning device for the cutterhead of the tunnel boring machine cannot adjust and position the distance between the outer and inner cutterheads, thus failing to meet the requirements for welding deformation compensation. Utility Model Content

[0005] To solve the problems mentioned above, this utility model is implemented through the following technical solution.

[0006] A shield tunneling machine cutterhead integral welding and positioning device includes: an outer cutterhead and an inner cutterhead, the inner cutterhead being disposed on one side of the outer cutterhead; the outer cutterhead includes: a positioning pin, which passes through the outer cutterhead, and the side of the inner cutterhead near the outer cutterhead is connected to one end of the positioning pin; an adjusting plate, which is mounted on the outer cutterhead, and the end of the positioning pin away from the inner cutterhead is connected to the adjusting plate, the adjusting plate being configured to move on the outer cutterhead to adjust the distance by which the positioning pin extends out of the outer cutterhead.

[0007] Preferably, the outer tool holder further includes: an adjustment groove, which is formed on one side of the outer tool holder; the adjustment plate is installed in the adjustment groove; a through hole is formed on the inner wall of the adjustment groove; and the positioning pin is disposed in the through hole.

[0008] Preferably, the outer tool holder further includes: a first lead screw, one end of which is installed on the inner wall of the adjusting groove, and the other end of which passes through the adjusting plate by means of a threaded connection; a knob, which is installed on one end of the lead screw and the knob is installed on the outer tool holder.

[0009] Preferably, there are two outer tool holders, which are symmetrically arranged, and a connecting plate is provided between the two outer tool holders.

[0010] Preferably, the connecting plate includes: two connecting slots, each located on one side of the connecting plate; and two positioning plates, each installed in one of the two connecting slots. The connecting plate is connected to the outer tool holder via the positioning plates, and the two positioning plates are configured to move closer to or further away from each other simultaneously.

[0011] Preferably, the connecting plate further includes: a control wheel, mounted on the connecting plate, the control wheel being disposed between two positioning plates; and two second lead screws, one end of each second lead screw being mounted on both sides of the control wheel, and the other end of the second lead screw being threadedly connected to the positioning plate.

[0012] Preferably, a positioning groove is provided on one side of the outer tool holder, and the positioning plate is installed in the positioning groove.

[0013] Preferably, the number of locating pins is at least two.

[0014] This invention provides an integral welding and positioning device for the cutterhead holder of a tunnel boring machine. Compared with the prior art, it has the following advantages: By controlling the extension length of the positioning pin on the first lead screw through a knob, the relative positional accuracy between the inner and outer cutterhead holders is always kept within the ideal range. Adjusting the extension length of the positioning pin can offset the changes in the distance between the cutterhead holders caused by thermal expansion and contraction, avoiding installation errors caused by welding deformation and ensuring the welding quality of the cutterhead holders. By rotating the control wheel, the second lead screws on both sides can be rotated synchronously, causing the positioning plate to move along the connecting groove, realizing precise adjustment of the distance between the two outer cutterhead holders. This device can meet the welding requirements of cutterhead holders of different specifications of tunnel boring machines, improving the versatility and adaptability of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram from another perspective of the present invention.

[0017] Figure 3 This is a schematic cross-sectional view of the outer tool holder, inner tool holder, and connecting plate proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the connecting plate structure proposed in this utility model.

[0019] Figure 5 This is a schematic diagram of the outer and inner tool holder structures proposed in this utility model.

[0020] The attached figures are labeled as follows:

[0021] 100. External tool holder; 101. Positioning pin; 102. Adjusting plate; 103. Adjusting groove; 104. First lead screw; 105. Knob; 106. Positioning groove;

[0022] 200. Inner tool holder;

[0023] 300. Connecting plate; 301. Connecting groove; 302. Positioning plate; 303. Second lead screw; 304. Control wheel. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0026] Reference Figures 1-5 A shield tunneling machine cutterhead integral welding and positioning device includes: an outer cutterhead 100 and an inner cutterhead 200, wherein the inner cutterhead 200 is disposed on one side of the outer cutterhead 100; the outer cutterhead 100 includes: a positioning pin 101, which is disposed through the outer cutterhead 100, and the side of the inner cutterhead 200 near the outer cutterhead 100 is connected to one end of the positioning pin 101, wherein the number of positioning pins 101 is at least two; and an adjusting plate 102, which is mounted on the outer cutterhead 100, wherein the end of the positioning pin 101 away from the inner cutterhead 200 is connected to the adjusting plate 102, and the adjusting plate 102 is configured to move on the outer cutterhead 100 to adjust the distance by which the positioning pin 101 extends out of the outer cutterhead 100.

[0027] In this embodiment, the design of multiple positioning pins 101 better ensures the accuracy and stability of positioning. The side of the inner tool holder 200 closest to the outer tool holder 100 is tightly connected to one end of the positioning pin 101, achieving precise positional matching between the inner and outer tool holders. Before welding, the positioning pin 101 prevents relative displacement between the inner and outer tool holders 200, ensuring the relative positional accuracy during welding. The adjusting plate 102 is designed to move flexibly on the outer tool holder 100, precisely adjusting the distance of the positioning pin 101 extending beyond the outer tool holder 100. By adjusting the extension length of the positioning pin 101, the distance between the inner and outer tool holders 200 can be adjusted to compensate for possible machining errors or welding deformation.

[0028] The outer tool holder 100 further includes: an adjustment groove 103, which is formed on one side of the outer tool holder 100; an adjustment plate 102 is installed in the adjustment groove 103; a through hole is formed on the inner wall of the adjustment groove 103; and a positioning pin 101 is disposed in the through hole; a first lead screw 104, one end of which is installed on the inner wall of the adjustment groove 103, and the other end of which passes through the adjustment plate 102 by means of a threaded connection; and a knob 105, which is installed on one end of the lead screw and is mounted on the outer tool holder 100.

[0029] The aforementioned adjustment groove 103 provides guidance and support for the movement of the adjustment plate 102, ensuring that the adjustment plate 102 can move smoothly and accurately on the outer cutterhead 100. Through holes are provided on the inner wall of the adjustment groove 103, and the positioning pin 101 is precisely positioned within these through holes. When the adjustment plate 102 moves on the outer cutterhead 100, it drives the positioning pin 101 to move synchronously, thereby adjusting the distance the positioning pin 101 extends out of the outer cutterhead 100. The operator can drive the first lead screw 104 to rotate by rotating the knob 105. Since the first lead screw 104 is threadedly connected to the adjustment plate 102, the rotation of the lead screw is converted into linear movement of the adjustment plate 102 on the outer cutterhead 100, thus achieving precise adjustment of the extension distance of the positioning pin 101. This adjustment method using the lead screw and knob 105 is simple to operate, has controllable precision, and can meet the high-precision requirements of the shield machine cutterhead assembly and positioning.

[0030] The number of outer tool holders 100 is two, and the two outer tool holders 100 are symmetrically arranged. A connecting plate 300 is provided between the two outer tool holders 100. The connecting plate 300 includes: two connecting grooves 301, which are respectively opened on both sides of the connecting plate 300; two positioning plates 302, which are respectively installed in the two connecting grooves 301. The connecting plate 300 is connected to the outer tool holder 100 through the positioning plates 302. The two positioning plates 302 are set to move closer or further away at the same time; a control wheel 304 is installed on the connecting plate 304 and is located between the two positioning plates 302; and two second lead screws 303, one end of which is respectively installed on both sides of the control wheel 304, and the other end of the second lead screws 303 is threadedly connected to the positioning plates 302.

[0031] The connecting plate 300 plays a crucial role in connecting and coordinating the two outer cutter holders 100 within the entire positioning device. This ensures that the two outer cutter holders 100 maintain a stable and consistent relative position during the welding process. The connecting plate 300 is connected to the outer cutter holders 100 via two positioning plates 302. The two positioning plates 302 are designed to move closer or further apart simultaneously. This synchronous movement allows adjustment of the distance between the two outer cutter holders 100 according to actual needs, accommodating the welding requirements of different specifications of tunnel boring machine cutter holders. When the operator rotates the control wheel 304, the control wheel 304 drives the second lead screws 303 on both sides to rotate synchronously. Since the second lead screws 303 are threadedly connected to the positioning plates 302, the rotation of the lead screws causes the positioning plates 302 to move along the direction of the connecting groove 301, thereby achieving the simultaneous movement of the two positioning plates 302 closer or further apart, ultimately adjusting the distance between the two outer cutter holders 100.

[0032] The outer tool holder 100 has a positioning groove 106 on one side, and the positioning plate 302 is installed in the positioning groove 106. The close cooperation between the positioning plate 302 and the positioning groove 106 can not only realize the reliable connection between the connecting plate 300 and the outer tool holder 100, but also further ensure the relative position accuracy of the two outer tool holders 100 during the welding process, and prevent the outer tool holders 100 from shifting or shaking during the welding process.

[0033] During use, two symmetrically arranged outer cutterheads 100 and two inner cutterheads 200 are placed on the assembly welding workbench. Positioning plates 302 are installed in the connecting grooves 301 on both sides of the connecting plate 300. When facing the assembly welding requirements of cutterheads of different specifications of tunnel boring machines, the operator rotates the control wheel 304 on the connecting plate 300. The control wheel 304 drives the second lead screws 303 on both sides to rotate synchronously. Since the second lead screws 303 are threadedly connected to the positioning plates 302, the rotation of the lead screws drives the positioning plates 302 to rotate along the connecting plate 300. The groove 301 moves in the direction of movement, so that the two positioning plates 302 move closer or further away at the same time, thereby adjusting the distance between the two outer tool holders 100 to adapt to the corresponding tool holder specifications. The inner tool holder 200 is brought closer to the side of the outer tool holder 100, so that the preset connecting part on the inner tool holder 200 is tightly connected to one end of the positioning pin 101 on the outer tool holder 100. Since there are at least two positioning pins 101, it can better ensure the precise matching of the inner tool holder 200 and the outer tool holder 100 in position and prevent relative displacement between the two in subsequent operations.

[0034] If machining errors exist or welding deformation is anticipated, the operator can rotate the knob 105 on the outer tool holder 100. The knob 105 drives the first lead screw 104 to rotate. Since the first lead screw 104 is threadedly connected to the adjusting plate 102, the rotation of the lead screw is converted into linear movement of the adjusting plate 102 within the adjusting groove 103 of the outer tool holder 100. The movement of the adjusting plate 102 causes the positioning pin 101 to move synchronously, thereby precisely adjusting the distance of the positioning pin 101 extending out of the outer tool holder 100. This operation can adjust the minute distance between the inner tool holder 200 and the outer tool holder 100, compensating for possible errors or deformations.

[0035] After completing the positioning and adjustment of the cutterheads through the above steps, ensure that the positioning plate 302 on the connecting plate 300 is tightly installed in the positioning groove 106 opened on one side of the outer cutterhead 100. This ensures the relative positional accuracy of the two outer cutterheads 100 during the welding process and prevents displacement or shaking. At this point, the entire positioning device stably fixes the inner cutterhead 200 and the outer cutterhead 100 in precise positions. Welding operations are then carried out to complete the overall welding of the tunnel boring machine cutterheads.

[0036] In summary, compared with existing technologies, it has the following beneficial effects:

[0037] The extension length of the positioning pin 101 is adjusted by controlling the first lead screw 104 with the knob 105, ensuring that the relative position accuracy between the inner tool holder 200 and the outer tool holder 100 is always kept within the ideal range. By adjusting the extension length of the positioning pin 101, the change in tool holder spacing caused by thermal expansion and contraction can be offset, avoiding tool holder installation errors caused by welding deformation, and ensuring the welding quality of the tool holder.

[0038] By rotating the control wheel 304, the second lead screws 303 on both sides can be rotated synchronously, causing the positioning plate 302 to move along the connecting groove 301, thereby achieving precise adjustment of the distance between the two outer cutter holders 100. This can meet the welding requirements of cutter holders of different specifications of tunnel boring machines, and improve the versatility and adaptability of the device.

[0039] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A shield tunneling machine cutterhead holder integral welding and positioning device, characterized in that, include: An outer tool holder (100) and an inner tool holder (200), wherein the inner tool holder (200) is disposed on one side of the outer tool holder (100); The outer tool holder (100) includes: A positioning pin (101) is provided through the outer tool holder (100), and the inner tool holder (200) is connected to one end of the positioning pin (101) on the side near the outer tool holder (100); An adjusting plate (102) is mounted on the outer tool holder (100). The end of the positioning pin (101) away from the inner tool holder (200) is connected to the adjusting plate (102). The adjusting plate (102) is set to move on the outer tool holder (100) to adjust the distance by which the positioning pin (101) extends out of the outer tool holder (100).

2. The TBM cutter holder integrated assembly positioning device of claim 1, wherein, The outer tool holder (100) also includes: An adjustment groove (103) is provided on one side of the outer tool holder (100), and an adjustment plate (102) is installed in the adjustment groove (103). A through hole is provided on the inner wall of the adjustment groove (103), and a positioning pin (101) is provided in the through hole.

3. The TBM cutter holder integrated assembly positioning device of claim 2, wherein, The outer tool holder (100) also includes: The first lead screw (104) is installed on the inner wall of the adjustment groove (103) at one end and passes through the adjustment plate (102) by means of a threaded connection at the other end; A knob (105) is installed at one end of the lead screw, and the knob (105) is installed on the outer tool holder (100).

4. The TBM cutter holder integrated assembly welding positioning device of claim 1, wherein, There are two outer tool holders (100), which are symmetrically arranged, and a connecting plate (300) is provided between the two outer tool holders (100).

5. The TBM cutter holder integrated assembly welding positioning device according to claim 4, wherein, The connecting plate (300) includes: There are two connecting slots (301), which are respectively opened on both sides of the connecting plate (300); There are two positioning plates (302), which are respectively installed in two connecting slots (301). The connecting plate (300) is connected to the outer tool holder (100) through the positioning plates (302). The two positioning plates (302) are set to move closer or further away at the same time.

6. The TBM cutter holder integrated assembly welding positioning device according to claim 5, wherein, The connecting plate (300) also includes: A control wheel (304) is mounted on the connecting plate (300) and is positioned between two positioning plates (302); There are two second lead screws (303). One end of each second lead screw (303) is installed on both sides of the control wheel (304), and the other end of the second lead screw (303) is threadedly connected to the positioning plate (302).

7. The TBM cutter holder integrated assembly welding positioning device according to claim 5, wherein, A positioning groove (106) is provided on one side of the outer tool holder (100), and the positioning plate (302) is installed in the positioning groove (106).

8. The integral welding and positioning device for the cutterhead holder of a tunnel boring machine according to claim 1, characterized in that, The number of the positioning pins (101) is at least two.

Images