Hole groove machining equipment for shield tunneling machine type large shell

Abstract

The utility model discloses hole groove machining equipment for a shield tunneling machine type large shell. Comprising a horizontally-arranged seat plate, a vertical plate which is vertically installed on the seat plate and can slide front and back on the seat plate, a transverse plate which is installed on the front side face of the vertical plate and can slide up and down on the front side face, and a machine head which is installed on the front side face of the transverse plate and can slide left and right on the front side face. A shaft-shaped tool apron which horizontally extends forwards, can rotate at a high speed and is used for installing a drilling and milling tool is arranged on the front side face of the machine head. A first motor for driving the tool apron to rotate is arranged on the machine head, and an output shaft of the first motor is in transmission with the tool apron through a bevel gear. The device has the advantages that hole and groove machining can be carried out on the inner wall and the outer wall of a large shell-shaped workpiece; holes or grooves with consistent inner and outer section sizes can be machined, and the requirement for the assembly precision of related parts is met; and the equipment can be placed in front of any vertical machining surface in a hoisting manner without depending on ground moving facilities.

Description

Technical Field

[0001] This utility model relates to a processing equipment for large shell slots in tunnel boring machines, belonging to the field of mechanical processing technology. Background Technology

[0002] One type of large shell, like the outer shell of a tunnel boring machine, has a diameter of more than ten or even twenty or thirty meters and weighs tens or even hundreds of tons. Machining holes and grooves on the inner wall of large shell-shaped workpieces is different from drilling and milling for ordinary workpieces. It is impossible to clamp and flip or make reciprocating movements. The only way to process qualified holes or grooves is to rely on the movement of the machining head.

[0003] Utility model application No. 202121484120.5 discloses a prefabricated shield tunnel shell processing device, including a horizontal turntable on the ground, a processing column detachably fixed to the horizontal turntable, and a counterweight block on the horizontal turntable to prevent the processing column from tipping over. A processing cutter head for processing the inner wall of the shield tunnel shell is movably connected to the processing column. This utility model solves the technical problem of large machine tool size in existing tunnel construction equipment by placing the shield tunnel shell on the ground and setting the processing device inside the shell for processing operations. This processing device eliminates the need for the dedicated machine tool to bear the weight of the shield tunnel shell itself, fundamentally solving the machine tool's load-bearing problem. However, this processing device also has the following shortcomings:

[0004] 1. Relying on a ground turntable, it can only be used to process the inner wall of large shells, and cannot process the outer side of the shell;

[0005] 2. Relying on the rotation of the ground turntable to create a hole or groove larger than the diameter of the cutter head will result in the cross-sectional dimension of the radially inward end of the hole or groove being smaller than the cross-sectional dimension of the radially outward side of the hole or groove. This will make it difficult to achieve high-precision fitting and installation of related components in the hole or groove. Utility Model Content

[0006] The technical problem to be solved by this utility model is: how to perform qualified hole and groove processing on the inner and outer walls of large shells.

[0007] To address the above problems, the technical solution proposed by this utility model is as follows:

[0008] A machine for machining large shell slots in tunnel boring machines includes a horizontally arranged base plate, a vertical plate mounted on the base plate and capable of sliding back and forth on the base plate, a horizontal plate mounted on the front side of the vertical plate and capable of sliding up and down on the front side, and a machine head mounted on the front side of the horizontal plate and capable of sliding left and right on the front side. The front side of the machine head is provided with a forward-extending, horizontally extending shaft-shaped tool holder capable of high-speed rotation for mounting drilling and milling tools.

[0009] The machine head is equipped with a motor that drives the tool holder to rotate, and the output shaft of the motor is connected to the tool holder via a bevel gear.

[0010] The rear of the machine head is provided with a dovetail groove, and the cross section of the horizontal plate is dovetail-shaped. The machine head is fastened to the upper and lower sides of the horizontal plate through the dovetail groove.

[0011] The upper surface of the seat plate and the front side of the vertical plate are respectively provided with a longitudinal slide rail and a vertical slide rail. The vertical plate and the horizontal plate travel on and are constrained on the longitudinal slide rail and the vertical slide rail, respectively.

[0012] The base plate, vertical plate, and horizontal plate are all provided with drive grooves, and each drive groove is provided with a drive screw. A motor connected to the drive screw is provided at one end of each of the base plate, vertical plate, and horizontal plate. Drive nuts fitted on their respective drive screws are provided at the bottom of the vertical plate, the rear side of the horizontal plate, and the rear side of the machine head.

[0013] Threaded mounting holes are provided on the edge area of ​​the front side of the machine head.

[0014] The base plate is provided with bolt mounting holes.

[0015] The static friction between the bottom surface of the seat plate and the bearing surface is greater than the force in any direction when the processing equipment is operating, and the seat plate always maintains its inherent horizontal posture during operation. Beneficial effects

[0016] 1. Capable of machining holes and grooves on the inner and outer walls of large shell-shaped workpieces;

[0017] 2. Capable of machining holes or grooves with consistent inner and outer cross-sectional dimensions to meet the assembly precision requirements of relevant components;

[0018] 3. It can be placed in front of any vertical processing surface without relying on ground moving facilities, and can be hoisted. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the processing equipment described in Embodiment 1;

[0020] Figure 2 This is a three-dimensional schematic diagram of the processing equipment described in Embodiment 1 in a state of waiting to be processed within a large housing;

[0021] Figure 3 This is a three-dimensional schematic diagram of the processing equipment described in Embodiment 1, with the processing equipment in a state of waiting to be processed on the bottom turntable set inside a large housing;

[0022] Figure 4 This is a three-dimensional schematic diagram of the processing equipment described in Embodiment 1 in a state of waiting to be processed outside a large housing;

[0023] Figure 5This is a three-dimensional schematic diagram of the processing equipment described in Embodiment 2.

[0024] In the diagram: 1. Seat plate; 101. Longitudinal slide rail; 102. Bolt mounting hole; 2. Vertical plate; 201. Vertical slide rail; 3. Horizontal plate; 4. Machine head; 401. Tool holder; 402. Motor 1; 403. Threaded mounting hole; 5. Tool; 6. Drive slot; 7. Drive screw; 701. Drive nut; 8. Motor 2; 9. Ground turntable; 10. Housing. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings: Example 1

[0026] like Figure 1 As shown in Figure 4, a machine tool for machining holes and grooves in the shell of a tunnel boring machine includes a horizontally arranged base plate 1, a vertical plate 2 mounted on the base plate 1 and capable of sliding back and forth on the base plate 1, a horizontal plate 3 mounted on the front side of the vertical plate 2 and capable of sliding up and down on the front side, and a machine head 4 mounted on the front side of the horizontal plate 3 and capable of sliding left and right on the front side. The front side of the machine head 4 is provided with a forward-extending, horizontally rotatable shaft-shaped tool holder 401 for mounting drilling and milling cutters 5. In application, the machining equipment is placed inside or outside the shell 10 to be machined, close to the area to be machined, so that the cutter can move forward and backward, up and down, and left and right, thereby machining holes or grooves on the inner or outer wall of the shell. It is particularly important to clarify here that, compared with the prior art disclosed in application number 202121484120.5, which relies on the rotation of a ground turntable 9 for lateral width processing, this processing equipment's cutting tool 5 can move horizontally alongside the head 4. This ensures that the cross-sectional dimension of the radially inward end of the drilled hole or groove is equal to the cross-sectional dimension of the radially outward side, allowing the assembly of related components to meet the requirements of assembly accuracy. Thus, this equipment can process both the inner and outer sides of the tunnel boring machine's shell, and can also process holes or grooves with consistent cross-sectional dimensions on both the inner and outer sides.

[0027] It should be noted that the equipment for which this application seeks protection is not limited to processing the shell 10 of a tunnel boring machine; any workpiece with a vertical processing surface is suitable for processing by this equipment.

[0028] It should also be noted that when processing the inner wall of the housing 10, the device for which this application seeks protection can also be placed on the ground turntable 9.

[0029] The shell 10 described here is generally cylindrical, but there are exceptions, such as square.

[0030] The machine head 4 is equipped with a motor 402 that drives the tool holder 401 to rotate. The output shaft of the motor 402 is driven by a bevel gear to the tool holder 401, which solves the problem of the installation position of the motor 402 on the machine head 4.

[0031] The rear of the machine head 4 is provided with a dovetail groove, and the cross section of the horizontal plate 3 is dovetail-shaped. The machine head 4 is fastened to the upper and lower sides of the horizontal plate 3 through the dovetail groove, so that the machine head 4 can be restricted on the horizontal plate 3.

[0032] The upper surface of the seat plate 1 and the front side of the vertical plate 2 are respectively provided with a longitudinal slide rail 101 and a vertical slide rail 201. The vertical plate 2 and the horizontal plate 3 travel on and are constrained on the longitudinal slide rail 101 and the vertical slide rail 201.

[0033] The base plate 1, vertical plate 2, and horizontal plate 3 are all provided with drive grooves 6, and drive screws 7 are provided in the drive grooves 6. A motor 8 connected to the drive screw 7 is provided at one end of the base plate 1, vertical plate 2, and horizontal plate 3. A drive nut 701 fitted on its respective drive screw 7 is provided at the bottom of the vertical plate 2, the rear side of the horizontal plate 3, and the rear side of the machine head 4.

[0034] A threaded mounting hole 403 is provided on the edge area of ​​the front side of the machine head 4, so that other machining tools other than the cutting tool 5 can be installed on the machine head.

[0035] The static friction between the bottom surface of the seat plate 1 and the bearing surface is greater than the force applied in any direction during operation of the processing equipment, and the seat plate 1 maintains its inherent horizontal posture during operation. In other words, the stability of the equipment during processing can be achieved by increasing its own weight, and the forces applied by motor 402 and motor 8 in any direction cannot cause the equipment to move or tilt. Example 2

[0036] like Figure 5 As shown, the difference between this and Embodiment 1 is that the base plate 1 is provided with bolt mounting holes 102. This allows the equipment to be fixed to the foundation by means of the bolt mounting holes 102 when the equipment is relatively light, which is suitable for situations where the shell workpiece can be moved.

[0037] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A processing equipment for large shell slots in tunnel boring machines, characterized in that: It includes a horizontally arranged base plate (1), a vertical plate (2) that is vertically mounted on the base plate (1) and can slide back and forth on the base plate (1), a horizontal plate (3) that is mounted on the front side of the vertical plate (2) and can slide up and down on the front side, and a machine head (4) that is mounted on the front side of the horizontal plate (3) and can slide left and right on the front side. The front side of the machine head (4) is provided with a forward-extending horizontal shaft-shaped tool holder (401) that can rotate at high speed for mounting drilling and milling tools (5).

2. The equipment for processing slots in large shells of tunnel boring machines according to claim 1, characterized in that: The machine head (4) is equipped with a motor (402) that drives the tool holder (401) to rotate. The output shaft of the motor (402) is connected to the tool holder (401) via a bevel gear.

3. The equipment for processing large shell slots for tunnel boring machines according to claim 1, characterized in that: The machine head (4) is provided with a dovetail groove at the rear. The cross section of the horizontal plate (3) is dovetail shaped. The machine head (4) is fastened to the upper and lower sides of the horizontal plate (3) through the dovetail groove.

4. The equipment for processing large shell slots in tunnel boring machines according to claim 1, characterized in that: The upper surface of the seat plate (1) and the front side of the vertical plate (2) are respectively provided with a longitudinal slide rail (101) and a vertical slide rail (201). The vertical plate (2) and the horizontal plate (3) travel on and are constrained on the longitudinal slide rail (101) and the vertical slide rail (201).

5. The equipment for processing large shell slots for tunnel boring machines according to claim 1, characterized in that: The seat plate (1), vertical plate (2), and horizontal plate (3) are all provided with drive grooves (6), and drive screws (7) are provided in the drive grooves (6). A motor (8) connected to the drive screws (7) is provided at one end of the seat plate (1), vertical plate (2), and horizontal plate (3). Drive nuts (701) fitted on their respective drive screws (7) are provided at the bottom of the vertical plate (2), the rear side of the horizontal plate (3), and the rear side of the machine head (4).

6. The equipment for processing large shell slots for tunnel boring machines according to claim 1, characterized in that: A threaded mounting hole (403) is provided on the edge area of ​​the front side of the machine head (4).

7. The equipment for processing slots in large shells of tunnel boring machines according to any one of claims 1-5, characterized in that: The seat plate (1) is provided with bolt mounting holes (102).

8. The equipment for processing slots in large shells of tunnel boring machines according to any one of claims 1-5, characterized in that: The static friction between the bottom surface of the seat plate (1) and the bearing surface is greater than the force in any direction when the processing equipment is working, and the seat plate (1) always maintains its inherent horizontal posture during operation.

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