Lifting device for shield tunneling machine

Abstract

The lifting device for the shield tunneling machine comprises a base, a support is movably arranged in an inner cavity of the base, supporting plates are fixedly connected to the two sides of the upper end of the support, arc supporting faces are arranged on the upper sides of the opposite faces of the upper ends of the supporting plates, and rolling shafts are rotationally connected to the four corners of the lower end of the support through lug plates; the upper end of each lifting triangular block is an inclined face, the inclined faces are located at the lower ends of the rolling shafts, the lower ends of the lifting triangular blocks are fixedly connected with transmission displacement blocks, and transmission screws are inserted into the middles of the left and right opposite transmission displacement blocks. According to the structure provided by the embodiment of the invention, when the transmission displacement block is driven to move through forward and reverse rotation of the transmission screw rod, the transmission displacement block can stay at the position where the double-shaft motor does not work without providing other power sources after the transmission displacement block moves to the position, so that the up-and-down movement of the supporting plate is stable; and the position of the supporting plate cannot be changed due to the damage of the double-shaft motor.

Description

Technical Field

[0001] This application relates to the field of tunnel boring machine technology, and in particular to a lifting device for tunnel boring machines. Background Technology

[0002] Currently, most of the cables used in tunnel boring machines (TBMs) for rail transit construction on the market are medium-voltage ethylene propylene rubber insulated power cables as specified in the national standard GB / T12706.2-2008, or are directly purchased flame-retardant cables for coal mines for assembly. With the increasing automation of modern construction, the application environments for TBM cables must meet the requirements of higher rated voltage and smaller cable bending radii.

[0003] However, during the use of tunnel boring machines (TBMs), it is necessary to change their height. Ordinary height adjustment structures use hydraulic cylinders to drive the TBM to move up and down. However, if the hydraulic cylinders are damaged during use, it will affect the balance of the TBM. Therefore, we have proposed a lifting device for TBMs. Utility Model Content

[0004] This application provides a lifting device for a tunnel boring machine to solve the problems mentioned above.

[0005] This application provides a lifting device for a tunnel boring machine, including:

[0006] The base has a bracket movably mounted inside its cavity. Support plates are fixedly connected to the upper two sides of the bracket, and an arc-shaped support surface is provided on the upper side of the opposite surface of the upper end of the support plate. Rollers are rotatably connected to the four corners of the lower end of the bracket through ear plates.

[0007] The lifting triangular blocks are provided in four parts. The upper end of each lifting triangular block is an inclined surface located at the lower end of the roller. Each lifting triangular block is fixedly connected to a transmission displacement block at its lower end. A transmission screw is inserted into the middle of each of the left and right opposite transmission displacement blocks. The transmission screw is connected to a dual-axis motor to drive the transmission screw to rotate in both directions.

[0008] The thread directions of the transmission screws on the left and right sides are opposite.

[0009] Preferably, the lower side plate of the inner cavity of the base has a limiting groove at the lower end of the roller.

[0010] Preferably, transmission displacement blocks are provided on both sides of the limiting groove, and a transmission screw is rotatably inserted into the middle of the limiting groove through a bearing. At the same time, the transmission rod of a dual-axis motor is fixedly connected to the middle of the transmission screw, and the dual-axis motor is fixedly connected to the middle of the limiting groove.

[0011] Preferably, the lower end of the bracket is fixedly connected to four corners with stabilizing slide rods, and the lower part of the stabilizing slide rods is movably inserted into the circular grooves opened at the four corners of the lower side plate of the base cavity.

[0012] Preferably, the base has a limiting connection cavity inside, and a bracket is movably installed inside the limiting connection cavity, while the limiting bracket can move up and down.

[0013] Preferably, the centers of the arc-shaped support surfaces are the same.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art:

[0015] The structure provided in this application embodiment allows the dual-axis motor to drive the transmission screw to rotate in both directions, thereby causing the two transmission displacement blocks to move relative to or opposite to each other, which in turn causes the corresponding lifting triangular blocks to move relative to or opposite to each other. Since the lower end of the roller is located on the inclined surface, when the lifting triangular blocks move relative to or opposite to each other, the roller can move upward or downward, which in turn causes the limiting bracket to move up and down, and causes the shield machine supported and placed on the arc support surface to move up and down.

[0016] When the transmission screw rotates forward and backward to drive the transmission displacement block to move, after the displacement is reached, no other power source is needed to keep the transmission displacement block in the position where the dual-axis motor is not working. This makes the up-and-down movement of the support plate stable and prevents the position of the support plate from changing due to damage to the dual-axis motor. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall structural diagram provided for an embodiment of this application;

[0020] Figure 2 This is a structural diagram of the limiting bracket according to an embodiment of this application;

[0021] Figure 3 This is a cross-sectional view of an embodiment of this application.

[0022] In the diagram: 1. Base; 2. Limiting connection cavity; 3. Bracket; 4. Support plate; 5. Arc support surface; 6. Stabilizing slide bar; 7. Limiting groove; 8. Transmission displacement block; 9. Transmission screw; 10. Dual-axis motor; 11. Inclined surface; 12. Roller; 13. Lifting triangular block; 14. Ear plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Various embodiments of this application may exist in the form of a range. It should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of this application. Therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. In addition, whenever a numerical range is indicated in this application, it means including any referenced number (fraction or integer) within the indicated range. Unless otherwise specified, all raw materials, reagents, instruments, and equipment used in this application can be purchased commercially or prepared using existing equipment.

[0025] In this application, unless otherwise stated, directional terms such as "upper" and "lower" specifically refer to the drawing directions in the accompanying drawings. Furthermore, in this application, the terms "comprising," "including," etc., mean "including but not limited to." In this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In this application, "and / or" describes the relationship between related objects, indicating that three relationships may exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. A and B can be singular or plural. In this application, "at least one" means one or more, and "more than one" means two or more. "At least one," "at least one of the following," or similar expressions refer to any combination of these items, including any combination of a single item or a plural item. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can both mean: a, b, c, ab, i.e., a and b, ac, bc, or abc, where a, b, and c can be a single or multiple.

[0026] Figure 1 This is an overall structural diagram provided for an embodiment of this application;

[0027] Figure 2 This is a structural diagram of the limiting bracket according to an embodiment of this application;

[0028] Figure 3 This is a cross-sectional view of an embodiment of this application.

[0029] like Figures 1-3 As shown in the figure, this application provides a lifting device for a tunnel boring machine, including:

[0030] The base 1 has a bracket 3 movably mounted in its inner cavity. Support plates 4 are fixedly connected to the upper two sides of the bracket 3, and an arc support surface 5 is provided on the upper side of the opposite surface of the upper end of the support plate 4. Rollers 12 are rotatably connected to the four corners of the lower end of the bracket 3 through ear plates 14.

[0031] The lifting triangular blocks 13 are provided in four forms. The upper end of each lifting triangular block 13 is an inclined surface 11, which is located at the lower end of the roller 12. The lower end of each lifting triangular block 13 is fixedly connected to a transmission displacement block 8, and a transmission screw 9 is inserted into the middle of each of the left and right opposite transmission displacement blocks 8. The transmission screw 9 is connected to a dual-axis motor 10 to drive the transmission screw 9 to rotate in both directions.

[0032] The thread directions of the transmission screws 9 on the left and right sides are opposite.

[0033] Specifically: the dual-axis motor 10 uses an existing motor on the market, which is existing technology. It is powered by an external power supply via a switch, and the dual-axis motor 10 is equipped with a controller to control the forward and reverse rotation of the dual-axis motor 10.

[0034] like Figure 3 As shown: The lower side plate of the inner cavity of the base 1 has a limiting groove 7 at the lower end of the roller 12.

[0035] Specifically: the limiting groove 7 is used to connect the transmission displacement block 8, the transmission screw 9 and the dual-axis motor 10.

[0036] like Figure 3 As shown: transmission displacement blocks 8 are provided on both sides of the limiting groove 7, and a transmission screw 9 is rotatably inserted into the middle of the limiting groove 7 through a bearing. At the same time, the transmission rod of the dual-axis motor 10 is fixedly connected to the middle of the transmission screw 9. The dual-axis motor 10 is fixedly connected to the middle of the limiting groove 7.

[0037] Specifically: the forward and reverse rotation of the transmission screw 9 can cause the transmission displacement block 8 to move relative to or in opposite directions.

[0038] like Figure 1 As shown: The lower end of the bracket 3 is fixedly connected to the four corners of the bracket 6, and the lower part of the stabilizing slide rod 6 is movably inserted into the circular grooves opened at the four corners of the lower side plate of the inner cavity of the base 1.

[0039] Specifically: the stabilizing slide bar 6 makes the vertical displacement of the bracket 3 more stable.

[0040] like Figure 2 As shown: The base 1 has a limiting connection cavity 2 inside, and a bracket 3 is movably installed inside the limiting connection cavity 2, while the limiting bracket 3 moves up and down.

[0041] Specifically: the limiting connection cavity 2 is connected to the limiting bracket 3.

[0042] like Figure 1 As shown: the centers of the circular arc support surfaces 5 are the same.

[0043] Specifically: the upper end of the arc support surface 5 supports and places the tunnel boring machine.

[0044] When the equipment is in use, the shield machine is placed on the upper arc support surface 5 of the two support plates 4. When it is necessary to adjust the vertical position of the shield machine, the dual-axis motor 10 is started by an external switch. The dual-axis motor 10 will drive the transmission screw 9 to rotate forward and backward, which will cause the two transmission displacement blocks 8 to move relative to or opposite to each other, and thus cause the corresponding lifting triangular blocks 13 to move relative to or opposite to each other. Since the lower end of the roller 12 is located on the inclined plane 11, when the lifting triangular blocks 13 move relative to or opposite to each other, the roller 12 can move upward or downward, which will cause the limit bracket 3 to move up and down, and thus cause the shield machine placed on the arc support surface 5 to move up and down.

[0045] Furthermore, when the transmission screw 9 rotates forward and backward to drive the transmission displacement block 8 to move, after the displacement is reached, the transmission displacement block 8 can remain in the position where the dual-axis motor 10 is not working without the need for other power sources. This ensures that the up and down movement of the support plate 4 is stable and that the position of the support plate 4 will not change due to damage to the dual-axis motor 10.

[0046] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed in this application.

Claims

1. A shield tunneling machine lifting device, characterized by, include: The base (1) has a bracket (3) movably installed in the inner cavity of the base (1). The upper two sides of the bracket (3) are fixedly connected to the support plate (4), and the upper side of the opposite surface of the support plate (4) is provided with an arc support surface (5). The lower four corners of the bracket (3) are rotatably connected to the roller (12) through the ear plate (14). The lifting triangular block (13) is provided in four parts. The upper end of the lifting triangular block (13) is an inclined surface (11), and the inclined surface is located at the lower end of the roller (12). The lower end of each lifting triangular block (13) is fixedly connected to a transmission displacement block (8), and a transmission screw (9) is inserted into the middle of each of the left and right opposite transmission displacement blocks (8). The transmission screw (9) is connected to a dual-axis motor (10) to drive the transmission screw (9) to rotate in both directions. The thread directions of the transmission screws (9) on the left and right sides are opposite.

2. The lifting device for a tunneling machine according to claim 1, characterized in that: The lower side plate of the inner cavity of the base (1) has a limiting groove (7) at the lower end of the roller (12).

3. The lifting device for a tunneling machine according to claim 2, characterized in that: The limiting groove (7) is provided with transmission displacement blocks (8) on both sides, and a transmission screw (9) is rotatably inserted into the middle of the limiting groove (7) through a bearing. At the same time, the transmission rod of the dual-axis motor (10) is fixedly connected to the middle of the transmission screw (9), and the dual-axis motor (10) is fixedly connected to the middle of the limiting groove (7).

4. The lifting device for a tunneling machine according to claim 1, characterized in that: The lower end of the bracket (3) is fixedly connected to the four corners of the bracket (3), and the lower part of the stabilizing slide rod (6) is movably inserted into the circular grooves opened at the four corners of the lower side plate of the inner cavity of the base (1).

5. The lifting device for a tunneling machine according to claim 1, characterized in that: The base (1) has a limiting connection cavity (2) inside, and a bracket (3) is movably installed inside the limiting connection cavity (2), while the limiting bracket (3) moves up and down.

6. The lifting device for a tunneling machine according to claim 1, characterized in that: The centers of the circular arc support surfaces (5) are the same.

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