Replacing device for main drive self-aligning bearing of heading machine

Abstract

The utility model provides a device for replacing a main drive self-aligning bearing of a heading machine, and belongs to the technical field of mechanical equipment special for tunnel construction. The replacing device comprises a connecting base, a first connecting piece, a second connecting piece and a third connecting piece. One end of the connecting seat is connected with the self-aligning bearing assembly; the first connecting piece is connected with a gearbox and a bearing sleeve in a main driving structure of the heading machine; the second connecting piece is connected with a gearbox and a connecting seat in a main driving structure of the heading machine; and the third connecting piece is connected with a gearbox and a connecting seat in the main driving structure of the heading machine. The special replacement device for replacing the self-aligning bearing assembly in the main driving structure of the heading machine in the limited space of the underground chamber is arranged, so that the self-aligning bearing in the main driving structure of the heading machine can be quickly replaced in the chamber after being damaged; the time for the heading machine to return to the chamber is saved, and the utilization rate of the heading machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of special mechanical equipment for tunnel construction, and relates to a device for replacing a main drive self-aligning bearing of a tunnel boring machine, and in particular to a main drive structure of a tunnel boring machine which can be quickly replaced in a limited space of an underground chamber. Background Art

[0002] Currently, tunnel boring machines (TBMs) face increasing space constraints and load requirements, especially with the increasing use of small-diameter TBMs. These machines generate significant loads and vibration, making maintenance on the enclosed main drive components within the confined space of underground chambers even more challenging. If the spherical bearings in existing TBM main drives are damaged during operation, the main drive will cease to function, directly impacting the efficiency of both the main drive and the entire TBM. Utility Model Content

[0003] The utility model solves the problem of difficulty in replacing the self-aligning bearing, an internal sub-component of the main drive of the tunnel boring machine, and limited working space in the limited space of the underground chamber, thereby effectively improving the construction efficiency.

[0004] The utility model provides a replacement device for a main drive self-aligning bearing of a roadheader, which is used for disassembling and / or installing a self-aligning bearing assembly in the main drive structure of the roadheader; the replacement device comprises a connecting seat, a first connecting member, a second connecting member and a third connecting member;

[0005] One end of the connecting seat is connected to the self-aligning bearing assembly, and the other end of the connecting seat is extended along the central axis direction of the self-aligning bearing assembly and away from one end of the self-aligning bearing assembly;

[0006] One end of the first connecting member is connected to the gearbox in the main drive structure of the roadheader, and the other end of the first connecting member is connected to the bearing sleeve in the main drive structure of the roadheader;

[0007] One end of the second connecting member is connected to the gearbox in the main drive structure of the roadheader, and the other end of the second connecting member is slidably connected to the connecting seat, and the sliding direction of the second connecting member is the same as the direction of the central axis of the self-aligning bearing assembly;

[0008] One end of the third connecting member is connected to the gearbox in the main drive structure of the tunnel boring machine, and the other end of the third connecting member is slidably connected to the connecting seat, and the sliding direction of the third connecting member is the same as the central axis direction of the self-aligning bearing assembly.

[0009] Furthermore, the replacement device also includes a counterweight assembly, which is sleeved on an end of the connecting seat away from the self-aligning bearing.

[0010] Optionally, a mounting groove for installing the counterweight assembly and a mounting hole for installing a fastener are provided on the connecting seat. The counterweight assembly is sleeved on the mounting groove. The central axis of the mounting hole is perpendicular to the central bearing of the connecting seat and is arranged on the end away from the self-aligning bearing assembly, so as to limit the counterweight assembly.

[0011] Optionally, the counterweight assembly includes at least one counterweight.

[0012] Optionally, the connecting seat includes a seat body, a connecting rod, and a pressure plate provided on an end of the seat body away from the self-aligning bearing;

[0013] The seat body is configured as a hollow cylindrical structure, with a spacer ring welded to one end of the seat body and the other end of the seat body connected to the pressure plate;

[0014] The connecting rod is arranged along the central axis of the seat body, and one end of the connecting rod extends to be connected to the self-aligning bearing assembly, and the other end of the connecting rod is connected to the pressure plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The utility model provides a special replacement device capable of replacing the self-aligning bearing assembly in the main drive structure of the tunnel boring machine within the limited space of an underground chamber, so that when the self-aligning bearing in the main drive structure of the tunnel boring machine is damaged, it can be quickly replaced in the chamber, thereby saving the time required for the tunnel boring machine to return to the chamber and improving the utilization rate of the tunnel boring machine.

[0017] (2) The utility model sets a counterweight assembly to adjust the different positions of the counterweight assembly on the connecting seat and the weight of the counterweight assembly, and connects it to multiple lifting points at the fixed end of the tunnel boring machine parts through a lifting tooling assembly (external lifting structure, such as electric or manual hoist, pneumatic or hydraulic cylinder, etc.), thereby realizing multi-degree-of-freedom pulling, disassembly and feeding assembly of the self-aligning bearing assembly, thereby realizing rapid replacement of the self-aligning bearing assembly.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1The utility model is a main cross-sectional schematic diagram of a replacement device for a main drive self-aligning bearing assembly of a tunnel boring machine after being connected to a main drive structure of the tunnel boring machine.

[0021] in:

[0022] 1. First self-aligning bearing, 2. Gear, 3. Second self-aligning bearing, 4. Bearing sleeve, 5. Extended positioning rod of first bearing sleeve, 6. Extended positioning rod of special tooling, 7. Limiting piece, 8. Spacer ring, 9. Connecting seat, 10. Counterweight assembly, 11. Fastener, 12. Pressure plate, 13. Connecting rod, 14. Nut, 15. Extended positioning rod of second bearing sleeve. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more clear and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings of the present invention are all simplified and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the implementation of the present invention; the "several" mentioned in the present invention are not limited to the specific quantities in the examples in the drawings; the directions or positional relationships indicated by "front", "middle", "back", "left", "right", "up", "down", "top", "bottom", "middle", etc. mentioned in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor can they be understood as limitations on the present invention.

[0024] Example:

[0025] See also Figure 1 As shown, the utility model provides a replacement device for a main drive self-aligning bearing assembly of a tunnel boring machine, which is used to disassemble and / or install the self-aligning bearing assembly in the main drive structure of the tunnel boring machine.

[0026] The self-aligning bearing assembly includes a first self-aligning bearing 1, a gear 2 and a second self-aligning bearing 3. The first self-aligning bearing 1, the gear 2 and the second self-aligning bearing 3 are arranged in sequence along the center axis and are tightly connected to each other by heat-fitting.

[0027] The replacement device includes a first bearing sleeve extended positioning rod 5, a special tool extended positioning rod 6, a limit piece 7, a spacer ring 8, a connecting seat 9, a counterweight block assembly 10, a fastener 11, a pressure plate 12, a connecting rod 13, a nut 14 and a second bearing sleeve extended positioning rod 15.

[0028] One end of the connecting seat 9 is connected to the self-aligning bearing 3, and the other end of the connecting seat 9 extends along the central axis of the self-aligning bearing assembly toward the other end away from the self-aligning bearing assembly; and a connecting piece and a counterweight assembly 10 are sleeved on the connecting seat 9. Specifically, a spacer ring 8 is welded to the connecting seat 9, and the spacer ring 8 is bolted to the self-aligning bearing 3; the connecting piece is fixedly arranged in the middle part of the connecting seat 9, and the counterweight assembly 10 is preferably configured to be composed of at least one counterweight, and the counterweight assembly 10 is arranged on the end of the connecting seat 9 away from the self-aligning bearing 3, and the relative position of the counterweight assembly 10 on the connecting seat 9 is limited and fixed by a fastener 11.

[0029] One end of the first bearing sleeve extended positioning rod 5 is connected to the gearbox in the main drive structure of the roadheader, and the other end of the first bearing sleeve extended positioning rod 5 is connected to the bearing sleeve 4 in the main drive structure of the roadheader. Specifically, one end of the first bearing sleeve extended positioning rod 5 is threadedly connected to the gearbox, and the other end of the first bearing sleeve extended positioning rod 5 is slidably connected to the bearing sleeve 4.

[0030] One end of the special tooling extended positioning rod 6 and the second bearing sleeve extended positioning rod 15 are both connected to the gearbox in the main drive structure of the tunnel boring machine, and the other ends of the special tooling extended positioning rod 6 and the second bearing sleeve extended positioning rod 15 are both slidably connected to the connecting member. Specifically, one end of the special tooling extended positioning rod 6 is threadedly connected to the gearbox, and the other end of the special tooling extended positioning rod 6 is slidably connected to the connecting member via a linear bearing, and the sliding of the special tooling extended positioning rod 6 is limited by a limit member 7; one end of the second bearing sleeve extended positioning rod 15 is threadedly connected to the gearbox, and the other end of the second bearing sleeve extended positioning rod 15 is slidably connected to the connecting member via a direct bearing.

[0031] Preferably, the connecting seat 9 is preferably configured to include a seat body, a connecting rod 13 and a pressure plate 12 arranged on the end of the seat body away from the self-aligning bearing 3. The seat body is preferably configured to be a hollow cylindrical structure, and a spacer ring 8 is welded to one end of the seat body, and the other end of the seat body is connected to the pressure plate 12; the connecting rod 13 is arranged along the central axis of the seat body, and one end of the connecting rod 13 extends to be connected to the gear 2, and the other end of the connecting rod 13 is connected to the pressure plate 12 through a nut 14.

[0032] Further preferably, a mounting groove for installing the counterweight assembly 10 and a mounting hole for installing the fastener 11 are provided on the connecting seat 9, and the counterweight assembly 10 is sleeved on the mounting groove, and the central axis of the mounting hole is arranged perpendicular to the central bearing of the connecting seat 9.

[0033] Preferably, the first bearing sleeve extended positioning rod 5, the special tooling extended positioning rod 6 and the second bearing sleeve extended positioning rod 15 are all arranged in a circumferential manner as at least one piece according to needs.

[0034] As a further embodiment of the present invention, the process of installing the main drive self-aligning bearing assembly of the tunnel boring machine using the above-mentioned replacement device is as follows:

[0035] Step 1: Connect the first self-aligning bearing, the gear, and the second self-aligning bearing to each other through the melted wax film to form a self-aligning bearing assembly;

[0036] Step 2: Connect the replacement device to the self-aligning bearing assembly, and connect one end of the first bearing sleeve extended positioning rod 5, the special tooling extended positioning rod 6, and the second bearing sleeve extended positioning rod 15 to the gearbox to complete the connection between the replacement device and the main drive structure of the tunnel boring machine;

[0037] Step 3: Engage the gear with the driving gear on the gearbox, and guide the first bearing sleeve extended positioning rod 5, the special tooling extended positioning rod 6 and the second bearing sleeve extended positioning rod 15 to install the self-aligning bearing assembly at the specified position of the main drive structure of the tunnel boring machine to complete the installation of the self-aligning bearing assembly.

[0038] As a further embodiment of the present invention, the process of disassembling the main drive self-aligning bearing assembly of the tunnel boring machine using the above-mentioned replacement device is opposite to the installation process of the main drive self-aligning bearing assembly of the tunnel boring machine.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A replacement device for the main drive self-aligning bearing of a roadheader, used for disassembling and / or installing the self-aligning bearing assembly in the main drive structure of the roadheader; characterized in that: The replacement device comprises a connecting seat (9), a first connecting piece, a second connecting piece and a third connecting piece; One end of the connecting seat (9) is connected to the self-aligning bearing assembly, and the other end of the connecting seat (9) is extended along the central axis direction of the self-aligning bearing assembly toward one end away from the self-aligning bearing assembly; One end of the first connecting member is connected to the gearbox in the main drive structure of the roadheader, and the other end of the first connecting member is connected to the bearing sleeve in the main drive structure of the roadheader; One end of the second connecting member is connected to a gearbox in a main drive structure of the tunnel boring machine, and the other end of the second connecting member is slidably connected to a connecting seat (9), and the sliding direction of the second connecting member is the same as the direction of the central axis of the self-aligning bearing assembly; One end of the third connecting member is connected to the gearbox in the main drive structure of the tunnel boring machine, and the other end of the third connecting member is slidably connected to the connecting seat (9), and the sliding direction of the third connecting member is the same as the central axis direction of the self-aligning bearing assembly.

2. The replacement device according to claim 1, characterized in that It also includes a counterweight assembly (10), which is sleeved on one end of the connecting seat (9) away from the self-aligning bearing.

3. The replacement device according to claim 2, characterized in that A mounting groove for mounting a counterweight assembly (10) and a mounting hole for mounting a fastener (11) are provided on the connecting seat (9); the counterweight assembly (10) is sleeved on the mounting groove; the central axis of the mounting hole and the central bearing of the connecting seat (9) are perpendicularly arranged to each other and are arranged on an end away from the self-aligning bearing assembly, so as to limit the counterweight assembly (10).

4. The replacement device according to claim 3, characterized in that The counterweight assembly (10) includes at least one counterweight.

5. The replacement device according to any one of claims 1 to 4, characterized in that: The connecting seat (9) comprises a seat body, a connecting rod (13), and a pressing plate (12) arranged on an end of the seat body away from the self-aligning bearing; The seat body is configured as a hollow cylindrical structure, one end of the seat body is welded with a spacer ring, and the other end of the seat body is connected to a pressure plate (12); The connecting rod (13) is arranged along the central axis of the seat body, and one end of the connecting rod (13) extends to be connected to the self-aligning bearing assembly, and the other end of the connecting rod (13) is connected to the pressure plate (12).

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