Walking mechanism split type track frame and heading machine

Abstract

The split type track frame of the walking mechanism comprises a walking track frame I and a walking track frame II, the walking track frame I is provided with a left connecting plate, a groove is formed in the vertical direction of the left connecting plate, and a limiting groove is formed in the left-right direction of the left connecting plate; the walking track frame II is provided with a right connecting plate, a boss is arranged on the right connecting plate in the up-down direction, and a limiting table is arranged on the right connecting plate in the left-right direction; the groove of the left connecting plate corresponds to the boss of the right connecting plate, and the limiting groove of the left connecting plate corresponds to the limiting table of the right connecting plate. The maximum undetachable size of the traveling mechanism of the heading machine can be reduced, and the requirements of different mine transportation conditions can be met.

Description

Technical Field

[0001] The utility model relates to the field of tunnel boring machines, in particular to a walking mechanism split type crawler frame and a tunnel boring machine. Background Art

[0002] my country excavates more than 12,000 km of new tunnels every year, and the amount of tunneling projects is huge. The market demand for efficient tunneling has driven tunneling equipment research and development units to continuously develop tunneling machines with greater cutting power. However, as the cutting power increases, the size of the machine model also increases. The excessive size affects the adaptability of the tunneling machine to different mine transportation conditions.

[0003] At present, low-profile roadheaders have been developed for low-profile tunnels while keeping the cutting power unchanged. However, due to the limitations of the roadheader's structure and weight, the length of the roadheader is difficult to control. The roadheader market has high requirements for the maximum non-detachable size of the roadheader when bidding, and the current maximum non-detachable size of the heavy-duty roadheader's travel mechanism exceeds the requirements of general mines.

[0004] Therefore, it is necessary to develop a new type of split crawler frame and tunnel boring machine with a traveling mechanism in a targeted manner to reduce the maximum non-detachable size of the tunnel boring machine's traveling mechanism. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a split crawler frame and a tunnel boring machine with a walking mechanism, which can reduce the maximum non-detachable size of the tunnel boring machine's walking mechanism and meet the needs of different mine transportation conditions.

[0006] Technical solution: The utility model is a split crawler frame of a walking mechanism, characterized in that it includes a walking crawler frame I and a walking crawler frame II, the walking crawler frame I is provided with a left connecting plate, the left connecting plate is provided with grooves in the up and down directions, and the left connecting plate is provided with a limiting groove in the left and right directions; the walking crawler frame II is provided with a right connecting plate, the right connecting plate is provided with a boss in the up and down directions, and the right connecting plate is provided with a limiting platform in the left and right directions; the groove of the left connecting plate corresponds to the boss of the right connecting plate, and the limiting groove of the left connecting plate corresponds to the limiting platform of the right connecting plate.

[0007] Wherein, the front and rear sides of the walking crawler frame I are provided with a plurality of lifting rings.

[0008] The front of the walking crawler frame I is provided with two lifting rings, which are arranged on the left and right sides; and the middle of the rear of the walking crawler frame I is provided with a lifting ring. The positions of the three lifting rings are designed to ensure that the walking crawler frame I is in a balanced state during lifting.

[0009] Wherein, the front and rear sides of the walking crawler frame II are provided with a plurality of lifting rings.

[0010] Wherein, a lifting ring is respectively arranged at the front and the rear of the walking crawler frame II, and the center of gravity of the walking crawler frame II is located at the horizontal plane where the line connecting the positions of the two lifting rings is located.

[0011] The left connecting plate and the right connecting plate are connected by high-strength bolts passing through corresponding through holes, and the high-strength bolts are connected with nuts and washers. The ends are tightened with nuts and washers. This bolt connection method is easy to disassemble and replace, and it is easy to replace after falling off.

[0012] The left connecting plate has 5 mounting holes on the top, 5 mounting holes on the bottom, 2 mounting holes on the left, and 4 mounting holes on the right. The mounting holes are located inside the cavity of the walking track frame I. The top, bottom and right side of the left connecting plate exceed the track frame by a certain height. The height is designed to take the minimum value under the requirements of strength and bolt assembly and disassembly space. The design of this connection method ensures the connection strength on the one hand, and on the other hand, the design occupies a small space, and the size of the track frame can be controlled within a reasonable range.

[0013] The right connecting plate has 5 mounting holes on the top, 5 mounting holes on the bottom, 2 mounting holes on the left, and 4 mounting holes on the right. The mounting holes are located inside the cavity of the walking track frame II. The top, bottom and left sides of the right connecting plate exceed the track frame by a certain height. The height is designed to take the minimum value while meeting the requirements of strength and bolt assembly and disassembly space. The design of this connection method ensures the connection strength on the one hand, and on the other hand, this design occupies a small space, and the size of the track frame can be controlled within a reasonable range.

[0014] Wherein, the walking crawler frame I and the walking crawler frame II are provided with observation windows to facilitate the disassembly and assembly of the bolts.

[0015] A tunnel boring machine using any of the above-mentioned split crawler frames with walking mechanisms.

[0016] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: Through the design of a new connection structure, the utility model can transmit most of the resistance and resistance torque from the gravity of the tunnel boring machine itself and the external walking through the connection structure, improve the stress state of the connecting bolts, avoid selecting too large bolts, control the height of the crawler frame, and reduce the height of the tunnel boring machine. This split crawler frame is mainly used on large tunnel boring machines, reducing the maximum non-detachable size of the tunnel boring machine and improving the adaptability of large tunnel boring machines to coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the walking crawler frame I of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the left connecting plate of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the walking crawler frame II of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the right connecting plate of the utility model;

[0022] In the figure, 1 is a walking track frame I; 2 is a high-strength bolt; 3 is a nut; 4 is a washer; 5 is a walking track frame II; 11 is a left connecting plate; 12 is a lifting ring; and 51 is a right connecting plate. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] EBZ320 roadheader is a heavy-duty roadheader. The maximum non-detachable dimensions of the crawler frame of its traveling mechanism are the length × width × height of the crawler frame of the traveling mechanism. The width and height dimensions have been minimized according to the design requirements, and the length dimension of the crawler frame exceeds the maximum non-detachable dimension requirements of some mines. In order to expand the scope of use of this model, it was decided to adopt a split crawler frame structure. Because heavy-duty roadheaders have high cutting power and heavy machine weight, the strength requirements for the crawler frame that bears the weight of the whole machine, the traveling resistance and the resistance torque are relatively high. The design of the split crawler frame connection structure has high requirements on the connection size and connection strength.

[0025] In view of this, the utility model provides a walking mechanism split crawler frame and a tunneling machine, including a walking crawler frame Ⅰ1 and a walking crawler frame Ⅱ5, the walking crawler frame Ⅰ1 is provided with a left connecting plate 11, the left connecting plate 11 is provided with a groove in the up and down direction, and the left connecting plate 11 is provided with a limit groove in the left and right direction; the walking crawler frame Ⅱ5 is provided with a right connecting plate 51, the right connecting plate 51 is provided with a boss in the up and down direction, and the right connecting plate is provided with a limit platform in the left and right direction; the groove of the left connecting plate 11 corresponds to the boss of the right connecting plate 51, and the limit groove of the left connecting plate 11 corresponds to the limit platform of the right connecting plate 51. The groove on the walking crawler frame Ⅰ1 is assembled in the boss of the walking crawler frame Ⅱ5, and bears the shear force and torsional moment in the up and down direction. The walking crawler frame Ⅱ5 is provided with a boss, through which the setting of the boss can accurately judge whether the walking crawler frame Ⅰ is assembled in place during the transfer, and can bear part of the lateral force and lateral moment on the other hand.

[0026] Among them, a plurality of lifting rings 12 are provided at the front and rear of the walking crawler frame Ⅰ1. Specifically, two lifting rings 12 are provided at the front of the walking crawler frame Ⅰ1, and the two lifting rings 12 are arranged on the left and right; a lifting ring 12 is provided in the middle of the rear of the walking crawler frame Ⅰ1. For the lifting of the walking crawler frame Ⅰ1, the positions of the three lifting rings 12 are designed to ensure that the walking crawler frame Ⅰ1 is in a balanced state during lifting. Among them, a plurality of lifting rings 12 are provided at the front and rear of the walking crawler frame Ⅱ5. Specifically, one lifting ring 12 is provided at the front and rear of the walking crawler frame Ⅱ5, and the center of gravity of the walking crawler frame Ⅱ5 is located in the horizontal plane where the position connection line of the two lifting rings 12 is located.

[0027] Among them, the left connecting plate 11 and the right connecting plate 51 are connected by high-strength bolts 2 passing through corresponding through holes, and the high-strength bolts 2 are connected with nuts 3 and washers 4. The ends are tightened with nuts 3 and washers 4. This bolt connection method is relatively easy to disassemble and replace, and is easy to replace after falling off. Specifically, the left connecting plate 11 is provided with 5 mounting holes on the top, 5 mounting holes on the bottom, 2 mounting holes on the left, and 4 mounting holes on the right. The mounting holes are located inside the cavity of the walking crawler frame Ⅰ1. The top, bottom and right side of the left connecting plate 11 exceed the crawler frame by a certain height. The height is designed to take the minimum value while meeting the requirements of strength and bolt assembly and disassembly space. On the one hand, the design of this connection method ensures the connection strength. On the other hand, this design occupies a small space, and the size of the crawler frame can be controlled within a reasonable range.

[0028] The right connecting plate 51 is provided with 5 mounting holes on the top, 5 mounting holes on the bottom, 2 mounting holes on the left, and 4 mounting holes on the right. The mounting holes are located inside the cavity of the walking track frame Ⅱ5. The top, bottom and left side of the right connecting plate 51 exceed the track frame by a certain height. The height is designed to take the minimum value while meeting the requirements of strength and bolt installation and removal space. On the one hand, the design of this connection method ensures the connection strength. On the other hand, this design occupies a small space, and the size of the track frame can be controlled within a reasonable range. Walking track frame Ⅰ1 and walking track frame Ⅱ5 are provided with observation windows to facilitate the disassembly and installation of bolts.

[0029] The split crawler frame is easy to disassemble and assemble, and reduces the maximum non-detachable size, which improves the adaptability of large-scale tunnel boring machines to mine transportation conditions, expands the applicability of medium and heavy-duty tunnel boring machines, and effectively improves mine excavation efficiency.

Claims

1. A walking mechanism split crawler frame, characterized in that: The invention comprises a walking crawler frame I (1) and a walking crawler frame II (5), wherein the walking crawler frame I (1) is provided with a left connecting plate (11), a groove is provided in the up-down direction of the left connecting plate (11), and a limiting groove is provided in the left-right direction of the left connecting plate (11); the walking crawler frame II (5) is provided with a right connecting plate (51), a boss is provided in the up-down direction of the right connecting plate (51), and a limiting platform is provided in the left-right direction of the right connecting plate (51); the groove of the left connecting plate (11) corresponds to the boss of the right connecting plate (51), and the limiting groove of the left connecting plate (11) corresponds to the limiting platform of the right connecting plate (51).

2. The walking mechanism split crawler frame according to claim 1, characterized in that: The front and rear sides of the walking crawler frame Ⅰ (1) are provided with a plurality of lifting rings (12).

3. The walking mechanism split crawler frame according to claim 2 is characterized in that: The front of the walking crawler frame Ⅰ (1) is provided with two lifting rings (12), which are arranged on the left and right; and the middle of the rear of the walking crawler frame Ⅰ (1) is provided with a lifting ring (12).

4. The walking mechanism split crawler frame according to claim 1, characterized in that: The front and rear sides of the walking crawler frame II (5) are provided with a plurality of lifting rings (12).

5. The walking mechanism split crawler frame according to claim 4, characterized in that: The walking crawler frame II (5) is provided with a lifting ring (12) at the front and rear respectively, and the center of gravity of the walking crawler frame II (5) is located in the horizontal plane where the position connection line of the two lifting rings (12) is located.

6. The walking mechanism split crawler frame according to claim 1, characterized in that: The left connecting plate (11) and the right connecting plate (51) are connected by high-strength bolts (2) passing through corresponding through holes. The high-strength bolts (2) are connected to nuts (3) and washers (4).

7. The walking mechanism split crawler frame according to claim 1, characterized in that: The left connecting plate (11) is provided with 5 mounting holes on the top, 5 mounting holes on the bottom, 2 mounting holes on the left, and 4 mounting holes on the right. The mounting holes are located inside the cavity of the walking crawler frame I (1).

8. The walking mechanism split crawler frame according to claim 7, characterized in that: The right connecting plate (51) is provided with 5 mounting holes on the top, 5 mounting holes on the bottom, 2 mounting holes on the left, and 4 mounting holes on the right. The mounting holes are located inside the cavity of the walking crawler frame II (5).

9. The walking mechanism split crawler frame according to claim 8, characterized in that: The walking crawler frame Ⅰ (1) and the walking crawler frame Ⅱ (5) are provided with observation windows.

10. A roadheader, characterized in that: Use the walking mechanism split crawler frame described in any one of claims 1-9.

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