Bolt locking device for traveling mechanism of heading machine

Abstract

The utility model discloses a heading machine walking mechanism bolt anti-loosening device which comprises a walking mechanism, a walking speed reducer bolt anti-loosening structure is assembled on the outer side of a walking speed reducer installation screw of the walking mechanism, and the walking speed reducer bolt anti-loosening structure is provided with an anti-loosening base plate I, an anti-loosening column I, an anti-loosening base plate II, an M8 inner hexagon screw and an M33 inner hexagon screw. A driving wheel bolt anti-loosening structure is assembled on the outer side of a driving wheel mounting bolt of the walking mechanism, and the driving wheel bolt anti-loosening structure is provided with an anti-loosening base plate IV, an anti-loosening column II, a driving wheel inner hexagon screw, an anti-loosening base plate III, a driving wheel and a walking speed reducer. According to the utility model, the speed reducer mounting bolt and the driving wheel mounting bolt are simultaneously prevented from loosening, and the problems of loosening and breakage of the speed reducer mounting bolt and the driving wheel mounting bolt are solved.

Description

Technical Field

[0001] The utility model relates to the field of tunnel boring machines, in particular to a bolt loosening prevention device for a traveling mechanism of a tunnel boring machine. Background Art

[0002] The roadheader is mainly used for excavation work faces, and has functions such as drilling, breaking coal and rock, and reloading. The travel mechanism is an important component of the roadheader, providing structural support and power source for the travel of the entire machine. The travel reducer is connected to the drive wheel through high-strength bolts. Driven by the hydraulic motor, the reducer rotates to drive the drive wheel, and the drive wheel engages the track shoe, allowing the entire travel mechanism to perform various actions. The working conditions of the roadheader are relatively harsh. The hardness of the working surface faced by the roadheader is getting higher and higher. The roadheader's walking bottom plate is uneven, and the entire travel mechanism is subject to relatively large vibrations and impacts. The reducer mounting bolts and the drive wheel mounting bolts are easy to loosen. When the reducer or drive wheel is loose, the mounting bolts will be cut off, resulting in travel failure. Some bolts are retained in the reducer mounting hole after being cut off, and the cleaning time is too long, affecting construction efficiency.

[0003] Therefore, it is necessary to develop a new type of anti-loosening device for the traveling mechanism bolts of the tunnel boring machine, and at the same time prevent the reducer mounting bolts and the drive wheel mounting bolts from loosening. Utility Model Content

[0004] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a device for preventing the bolts of the traveling mechanism of a tunnel boring machine from loosening, and at the same time prevents the reducer mounting bolts and the drive wheel mounting bolts from loosening, thereby solving the problem of loosening and breakage of the reducer and drive wheel mounting bolts.

[0005] Technical solution: The utility model is a tunnel boring machine walking mechanism bolt anti-loosening device, including a walking mechanism, a walking reducer bolt anti-loosening structure is assembled on the outside of the walking reducer mounting screws of the walking mechanism, and the walking reducer bolt anti-loosening structure is provided with an anti-loosening pad I, an anti-loosening column I, an anti-loosening pad II, an M8 hexagon socket screw and an M33 hexagon socket screw; a driving wheel bolt anti-loosening structure is assembled on the outside of the driving wheel mounting bolts of the walking mechanism, and the driving wheel bolt anti-loosening structure is provided with an anti-loosening pad IV, an anti-loosening column II, a driving wheel hexagon socket screw, an anti-loosening pad III, a driving wheel and a walking reducer.

[0006] Among them, the anti-loosening pad II is located on the left side of the reducer mounting plate of the crawler frame of the walking mechanism. The anti-loosening pad II is provided with a plurality of mounting holes. The M33 hexagon socket screws are located in the mounting holes to fix the anti-loosening pad II and the walking reducer together.

[0007] Among them, the anti-loosening pad I is located on the left side of the anti-loosening pad II, and the anti-loosening pad I is connected to the anti-loosening pad II through a plurality of hexagon socket screws. The anti-loosening pad I is provided with a plurality of mounting holes, and the mounting holes correspond one-to-one to the M33 hexagon socket screws.

[0008] Among them, the cross-sectional shape of the anti-loosening column I is hexagonal, one end of the anti-loosening column I is assembled in the hexagonal hole at the end of the M33 hexagon socket screw, and the internal assembly clearance is 0.5mm; the other end of the anti-loosening column I is assembled in the corresponding hole of the anti-loosening pad I; a 5mm-10mm gap is left between the left end face of the anti-loosening column I and the left end face of the anti-loosening pad I; the M33 hexagon socket screw is fixed as a whole through the anti-loosening structure of the travel reducer bolt.

[0009] Among them, the driving wheel is installed on the left side of the travel reducer, the anti-loosening plate III is located on the left side of the driving wheel, the travel reducer is located on the right side of the driving wheel, and the driving wheel hexagon socket screw fixes the anti-loosening plate III and the travel reducer together.

[0010] Among them, the anti-loosening pad IV is located on the left side of the anti-loosening pad III, the outer diameter of the anti-loosening pad IV and the anti-loosening pad III differ by 10mm, and the anti-loosening pad IV and the anti-loosening pad III are connected by several sections of weld feet on the edge; the length of the weld foot is 50mm and the height is 5mm.

[0011] Among them, the anti-loosening pad III is provided with a plurality of mounting holes, and the mounting holes correspond one by one to the hexagon socket screws of the driving wheel.

[0012] Among them, one end of the anti-loosening column II is assembled in the hexagonal hole of the hexagon socket screw of the driving wheel, and the internal assembly clearance is 0.5mm; the other end of the anti-loosening column II is assembled in the corresponding hole of the anti-loosening pad IV; a 5mm-10mm gap is left between the left end face of the anti-loosening column II and the left end face of the anti-loosening pad IV; the hexagon socket screw of the driving wheel is fixed as a whole through the anti-loosening structure of the driving wheel bolt.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the device of the utility model is mainly located at the rear of the traveling mechanism of the tunnel boring machine, and is respectively installed on the outside of the traveling reducer mounting screws and the outside of the driving wheel mounting bolts. The device is fixedly connected with the fastening screws to solve the problem of loosening and breakage of the reducer and driving wheel mounting bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the use structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the bolt loosening prevention structure of the travel reducer of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the drive wheel bolt loosening prevention structure of the utility model;

[0018] In the figure, 1 is the walking mechanism; 2 is the anti-loosening structure of the walking reducer bolt; 3 is the anti-loosening structure of the driving wheel bolt; 21 is the anti-loosening pad I; 22 is the anti-loosening column I; 23 is the anti-loosening pad II; 24 is the M8 hexagon socket screw; 25 is the M33 hexagon socket screw; 31 is the anti-loosening pad IV; 32 is the anti-loosening column II; 33 is the hexagon socket screw of the driving wheel; 34 is the anti-loosening pad III; 4 is the driving wheel; 5 is the walking reducer. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The EBZ260 cantilevered tunnel boring machine is a medium-sized tunnel boring machine. During its use, the reducer bolts and drive wheel bolts frequently break. After on-site investigation, it was found that the tunnel boring machine vibrates greatly during operation, and the travel reducer and drive wheel are frequently impacted during operation. The installation bolts of the reducer and drive wheel are easy to loosen. After the bolts are loosened, they break under the impact of the tunnel boring machine's working force. At present, some manufacturers spot weld the bolts after assembly to prevent loosening, but after the welds fall off, they cannot prevent loosening.

[0021] In this regard, the utility model provides a device for preventing bolts from loosening for a traveling mechanism of a tunnel boring machine, the device comprising a reducer bolt anti-loosening structure 2 and a drive wheel bolt anti-loosening structure 3.

[0022] The reducer bolt anti-loosening structure 2 is mainly used to prevent the reducer mounting bolts from loosening, wherein the anti-loosening pad plate II 23 is located on the left side of the reducer mounting plate of the crawler frame of the walking mechanism 1, and the walking reducer 5 is located on the right side of the reducer mounting plate of the crawler frame of the walking mechanism 1. The M33 hexagon socket screw 25 fixes the anti-loosening pad plate II 23 and the walking reducer 5 together. The anti-loosening pad plate I 21 is located on the left side of the anti-loosening pad plate II 23, and is fixed to the anti-loosening pad plate II 23 through a circle of M8 hexagon socket screws 24, wherein the anti-loosening pad plate I 21 has a circle of mounting holes, and the mounting holes correspond to the M33 hexagon socket screws 25 one by one. The cross-sectional shape of the anti-loosening column Ⅰ22 is hexagonal, and one end of the anti-loosening column Ⅰ22 is assembled in the end hexagonal hole of the M33 hexagon socket screw 25, and the internal assembly gap is 0.5mm. The other end of the anti-loosening column Ⅰ22 is assembled in the corresponding hole of the anti-loosening pad Ⅰ21, and a gap of 5-10mm is left between the left end face of the anti-loosening column Ⅰ22 and the left end face of the anti-loosening pad Ⅰ21. The gap is fully welded, and at this time, a circle of M33 hexagon socket screws 25 are fixed as a whole through the reducer bolt anti-loosening structure 2. When the travel reducer 5 is repeatedly impacted, the fixed M33 hexagon socket screws 25 cannot be loosened alone, which effectively prevents the reducer bolts from breaking due to the loosening of the reducer bolts.

[0023] The driving wheel bolt anti-loosening structure 3 is mainly used to prevent the driving wheel from loosening, wherein the driving wheel 5 is installed on the left side of the travel reducer 5, and the space between the driving wheel 4 and the reducer mounting plate of the crawler frame of the traveling mechanism 1 is relatively small. The anti-loosening pad Ⅲ34 is located on the left side of the driving wheel 4, and the travel reducer 5 is located on the right side of the driving wheel 4. The driving wheel hexagon socket screw 33 fixes the anti-loosening pad Ⅲ34 and the travel reducer 5 together. The anti-loosening pad Ⅳ31 is located on the left side of the anti-loosening pad Ⅲ34. The outer diameters of the two parts differ by 10mm. The weld feet with a length of 50mm and a height of 5mm are welded in sections along the edge of the anti-loosening pad Ⅳ31 to fix the anti-loosening pad Ⅳ31 with the anti-loosening pad Ⅲ34. The anti-loosening pad Ⅲ34 has a circle of mounting holes, and the mounting holes correspond one-to-one to the driving wheel hexagon socket screws 33. One end of the anti-loosening column II 32 is assembled in the hexagonal hole of the hexagon socket screw 33 of the driving wheel, and its internal assembly clearance is 0.5mm. The other end of the anti-loosening column II 32 is assembled in the corresponding hole of the anti-loosening pad IV 31. There is a gap of 5mm-10mm between the left end face of the anti-loosening column II 32 and the left end face of the anti-loosening pad IV 31. The gap is fully welded. At this time, a circle of driving wheel hexagon socket screws 33 are fixed as a whole through the driving wheel bolt anti-loosening structure 3. When the driving wheel 4 is repeatedly impacted by the crawler walking device, the driving wheel hexagon socket screws 33 fixed as a whole cannot loosen individually, which effectively prevents the problem of bolt breakage caused by the loosening of the driving wheel hexagon socket screws 33.

[0024] The utility model mainly includes inner and outer anti-loosening pads and connecting parts. The inner anti-loosening pad is pressed under the inner hexagon screw, one end of the hexagonal anti-loosening column is assembled in the inner hexagonal hole of the inner angle screw, and the other end is connected to the outer anti-loosening pad and fixed. The inner and outer anti-loosening pads are fixed, so that a circle of fixing screws are fixedly connected through the outer anti-loosening pad to form an integrated self-locking structure. The utility model is mainly located at the rear of the traveling mechanism of the tunnel boring machine, and is respectively assembled on the outside of the traveling reducer mounting screws and the outside of the driving wheel mounting bolts. The device is fixedly connected with the fastening screws to solve the problem of loosening and breaking of the reducer and driving wheel mounting bolts. The device has a simple structure and is easy to assemble and install. After actual application, it can effectively reduce the loosening failure rate of the reducer and drive and improve product performance.

Claims

1. A bolt loosening prevention device for a traveling mechanism of a tunnel boring machine, characterized in that: The invention comprises a walking mechanism (1), a walking reducer bolt anti-loosening structure (2) is assembled on the outer side of the walking reducer mounting screw of the walking mechanism (1), and the walking reducer bolt anti-loosening structure (2) is provided with an anti-loosening pad plate I (21), an anti-loosening column I (22), an anti-loosening pad plate II (23), an M8 hexagon socket screw (24) and an M33 hexagon socket screw (25); and a driving wheel bolt anti-loosening structure (3) is assembled on the outer side of the driving wheel mounting bolt of the walking mechanism (1), and the driving wheel bolt anti-loosening structure (3) is provided with an anti-loosening pad plate IV (31), an anti-loosening column II (32), a driving wheel hexagon socket screw (33), an anti-loosening pad plate III (34), a driving wheel (4) and a walking reducer (5).

2. The bolt loosening prevention device for the traveling mechanism of a tunnel boring machine according to claim 1, characterized in that: The anti-loosening pad II (23) is located on the left side of the reducer mounting plate of the crawler frame of the walking mechanism (1). The anti-loosening pad II (23) is provided with a plurality of mounting holes. M33 hexagon socket screws (25) are located in the mounting holes to fix the anti-loosening pad II (23) and the walking reducer (5) together.

3. The bolt anti-loosening device for the traveling mechanism of a tunnel boring machine according to claim 2, characterized in that: The anti-loosening pad I (21) is located on the left side of the anti-loosening pad II (23). The anti-loosening pad I (21) is connected to the anti-loosening pad II (23) through a plurality of M8 hexagon socket screws (24). The anti-loosening pad I (21) is provided with a plurality of mounting holes, which correspond to the M33 hexagon socket screws (25) one by one.

4. The bolt anti-loosening device for the traveling mechanism of a tunnel boring machine according to claim 3, characterized in that: The cross-sectional shape of the anti-loosening column I (22) is hexagonal, and one end of the anti-loosening column I (22) is assembled in the end hexagonal hole of the M33 hexagon socket screw (25), and the internal assembly clearance is 0.5mm; the other end of the anti-loosening column I (22) is assembled in the corresponding hole of the anti-loosening pad I (21); a gap of 5mm-10mm is left between the left end face of the anti-loosening column I (22) and the left end face of the anti-loosening pad I (21); the M33 hexagon socket screw (25) is fixed as a whole through the travel reducer bolt anti-loosening structure (2).

5. The bolt anti-loosening device for the traveling mechanism of a tunnel boring machine according to claim 1, characterized in that: The driving wheel (4) is installed on the left side of the travel reducer (5), the anti-loosening pad III (34) is located on the left side of the driving wheel (4), the travel reducer (5) is located on the right side of the driving wheel (4), and the driving wheel hexagon socket screw (33) fixes the anti-loosening pad III (34) and the travel reducer (5) together.

6. The bolt loosening prevention device for the traveling mechanism of a tunnel boring machine according to claim 5, characterized in that: The anti-loosening pad IV (31) is located on the left side of the anti-loosening pad III (34), and the outer diameter of the anti-loosening pad IV (31) and the anti-loosening pad III (34) differ by 10 mm. The anti-loosening pad IV (31) and the anti-loosening pad III (34) are connected by a plurality of weld feet at the edge; the length of the weld foot is 50 mm and the height is 5 mm.

7. The bolt loosening prevention device for the traveling mechanism of a tunnel boring machine according to claim 6, characterized in that: The anti-loosening pad III (34) is provided with a plurality of mounting holes, and the mounting holes correspond to the hexagon socket screws (33) of the driving wheel one by one.

8. The bolt loosening prevention device for the traveling mechanism of a tunnel boring machine according to claim 7, characterized in that: One end of the anti-loosening column II (32) is assembled in the hexagonal hole of the hexagon socket screw (33) of the driving wheel, and the internal assembly clearance is 0.5mm; the other end of the anti-loosening column II (32) is assembled in the corresponding hole of the anti-loosening pad IV (31); a gap of 5mm-10mm is left between the left end face of the anti-loosening column II (32) and the left end face of the anti-loosening pad IV (31); the driving wheel hexagon socket screw (33) is fixed as a whole through the driving wheel bolt anti-loosening structure (3).

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