Shovel plate of heading machine

Abstract

The utility model relates to the technical field of heading machines, in particular to a heading machine shovel plate which comprises a shovel plate body, two symmetrically-distributed star wheels are arranged on the inner side of the shovel plate body, protection mechanisms are arranged on the outer sides of the star wheels, a connecting base is fixedly connected to the rear side of the shovel plate body, and a conveying mechanism is arranged on the inner side of the shovel plate body. The protection mechanism comprises a protection cover, the protection cover is arranged on the outer side of the star wheel, a mounting bolt is arranged at the top of the protection cover, a groove is formed in the top of the mounting bolt, and a limiting belt is arranged at the top of the protection cover. Through the arrangement of the protection mechanism, the star wheel can be protected by the protection cover during use, the star wheel is prevented from being damaged due to the fact that rocks collide with the star wheel when the heading machine works, the service life of the star wheel is greatly prolonged, broken stones on the two sides can be guided to the middle under the action of the two inclined strips, the star wheel is convenient to push, and the heading machine is convenient to use. And the conveying efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel boring machines, and in particular relates to a tunnel boring machine shovel. Background Art

[0002] A roadheader is a machine used to excavate tunnels beneath flat ground. It primarily consists of a traveling mechanism, a working mechanism, a loading mechanism, and a transfer mechanism. As the traveling mechanism advances, the cutting head in the working mechanism continuously crushes rock and transports it away. This rock is transported by a shovel, which scoops up the crushed rock as the machine travels. A pair of star wheels are mounted on the shovel, and a trough with a conveyor mechanism is located between the star wheels. The star wheels rotate, pushing the rock into the trough, where it is then transported to the rear of the machine by a conveyor.

[0003] In the Chinese patent publication number CN220705700U, a roadheader shovel is mentioned. The roadheader shovel can increase the shoveling range, which is conducive to improving the shoveling efficiency, further improving the overall construction progress, and can ensure the collection effect of crushed materials. It is highly practical and conducive to actual use.

[0004] In the above-mentioned prior art, the star wheel of the tunnel boring machine shovel is not provided with a protective structure, and is easily damaged by impacts such as gravel, which affects the service life of the tunnel boring machine shovel. In addition, when transporting soil and gravel, due to the large opening, it will cause side accumulation, which is difficult to collect and has poor practicality. For this reason, we propose a tunnel boring machine shovel. Utility Model Content

[0005] The purpose of the utility model is to provide a shovel plate for a tunnel boring machine, so as to solve the problems in the prior art that a star wheel is easily damaged by impact of gravel or the like and that side accumulation is caused due to a large opening, making collection difficult.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A roadheader blade, comprising a blade body, two symmetrically distributed star wheels provided inside the blade body, a protective mechanism provided outside the star wheels, a connecting seat fixedly connected to the rear side of the blade body, and a conveying mechanism provided inside the blade body;

[0008] The protection mechanism includes a protection cover, which is arranged on the outside of the star wheel, a mounting bolt is arranged on the top of the protection cover, a groove is opened on the top of the mounting bolt, and a limiting belt is arranged on the top of the protection cover;

[0009] The conveying mechanism includes a side groove, which is opened on the inner side of the shovel plate body. Two symmetrically distributed oblique bars are provided on the inner side of the shovel plate body.

[0010] Preferably, the outer side of the star wheel is provided with screw holes distributed in an arc shape with equal intervals, and the inner sides of the screw holes are adapted to the outer sides of the mounting bolts.

[0011] Preferably, a fixing rod is fixedly connected to the outer side of the protective cover, a circular ring is fixedly connected to one end of the limiting belt, and the inner side of the circular ring is adapted to the outer side of the fixing rod.

[0012] Preferably, the outer side of the star wheel is fixedly connected to a limiting strip, the inner side of the protective cover is provided with a limiting groove, and the outer side of the limiting strip is slidably connected to the inner side of the limiting groove.

[0013] Preferably, the bottom of the side trough is inclined, a material trough is provided on the inner side of the shovel plate body, the two opposite surfaces of the side troughs are connected to the inner side of the material trough, and a conveyor belt is provided on the inner side of the material trough.

[0014] Preferably, a fixing bolt is provided at the top of the oblique bar, and the bottom end of the fixing bolt passes through the oblique bar and extends into the interior of the shovel plate body.

[0015] Preferably, the two oblique strips are arranged in an eight-shaped shape on the inner side of the shovel plate body.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model is provided with a protective mechanism. When in use, the protective cover can protect the star wheel to prevent the rock from hitting the star wheel and causing damage when the tunnel boring machine is working, which greatly improves the service life of the star wheel and has good practicality.

[0018] 2. Through the setting of the conveying mechanism, the utility model can guide the gravel on both sides to the middle under the action of the two oblique bars, which is convenient for the pushing of the star wheel. Under the action of the two side grooves, the gravel pushed by the star wheel can pass through the side grooves as much as possible and enter the conveyor belt in the material trough, thereby improving the conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the three-dimensional diagrams of the present utility model;

[0020] Figure 2 This is the second stereogram of the present utility model;

[0021] Figure 3 This is a schematic diagram of the star wheel of the present utility model;

[0022] Figure 4 This is a schematic diagram of the protective cover of the present utility model.

[0023] In the figure: 1. Shovel body; 2. Conveying mechanism; 201. Conveyor belt; 202. Material trough; 203. Side trough; 204. Oblique bar; 205. Fixing bolt; 3. Protective mechanism; 301. Limiting bar; 302. Screw hole; 303. Fixing rod; 304. Ring; 305. Limiting belt; 306. Protective cover; 307. Limiting groove; 308. Mounting bolt; 4. Connecting seat; 5. Star wheel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figures 1-4 As shown, the utility model provides a roadheader shovel, including a shovel body 1, two symmetrically distributed star wheels 5 are provided inside the shovel body 1, a protective mechanism 3 is provided outside the star wheels 5, a connecting seat 4 is fixedly connected to the rear side of the shovel body 1, and a conveying mechanism 2 is provided inside the shovel body 1;

[0026] The protection mechanism 3 includes a protection cover 306, which is arranged on the outside of the star wheel 5. The inner side of the protection cover 306 is adapted to the outer side of the corner of the star wheel 5 to protect the corner of the star wheel 5. A mounting bolt 308 is provided on the top of the protection cover 306. A groove is opened on the top of the mounting bolt 308. The inner side of the groove is adapted to the outer side of the limiting belt 305. The top of the protection cover 306 is provided with a limiting belt 305. The limiting belt 305 has a certain degree of elasticity, which facilitates the ring 304 to be sleeved on the outer side of the fixing rod 303.

[0027] The conveying mechanism 2 includes a side groove 203 , which is opened on the inner side of the shovel plate body 1 . Two symmetrically distributed oblique bars 204 are provided on the inner side of the shovel plate body 1 .

[0028] In a further embodiment, referring to Figure 3-Figure 4 The outer side of the star wheel 5 is provided with screw holes 302 distributed in an arc shape with equal intervals. The screw holes 302 facilitate the entry of the mounting bolts 308 to limit the protective cover 306. The inner side of the screw holes 302 is adapted to the outer side of the mounting bolts 308. The outer side of the star wheel 5 is fixedly connected to the limit bar 301. The limit bar 301 and the limit groove 307 limit the moving trajectory of the protective cover 306 to prevent it from falling off from the outside of the star wheel 5 and facilitate the installation of the protective cover 306. A limit groove 307 is provided on the inner side of the protective cover 306, and the outer side of the limit bar 301 is slidably connected to the inner side of the limit groove 307.

[0029] In this embodiment, the protective cover 306 can be fixed on the star wheel 5 by the action of the mounting bolts 308 to protect the star wheel 5.

[0030] In a further embodiment, referring to Figure 4 The outside of the protective cover 306 is fixedly connected to a fixing rod 303, which facilitates the insertion of the ring 304. One end of the limiting belt 305 is fixedly connected to the ring 304. The ring 304 and the fixing rod 303 are used to limit one end of the limiting belt 305. The inner side of the ring 304 is adapted to the outer side of the fixing rod 303.

[0031] In this embodiment, the limiting belt 305 enters into the groove opened at the top of the mounting bolt 308 to limit the position of the groove, thereby preventing loosening and preventing the protective cover 306 from falling off.

[0032] In a further embodiment, referring to Figure 2 The bottom of the side trough 203 is set with an inclined surface, which facilitates the flow of crushed stone into the material trough 202. A material trough 202 is opened on the inner side of the shovel body 1. The opposite surfaces of the two side troughs 203 are connected to the inner side of the material trough 202. A conveyor belt 201 is set inside the material trough 202 to facilitate the transportation of crushed stone.

[0033] In this embodiment, the gravel and soil carried at the inner corner of the star wheel 5 enters the side groove 203 when the star wheel 5 rotates, and enters the conveyor belt 201 in the material trough 202 through the side groove 203 for transportation, avoiding further rotation and discharge outside the shovel body 1.

[0034] In a further embodiment, referring to Figure 1-Figure 2 A fixing bolt 205 is provided on the top of the oblique bar 204 to fix the oblique bar 204. The bottom end of the fixing bolt 205 passes through the oblique bar 204 and extends into the inside of the shovel body 1. The two oblique bars 204 are arranged in an eight-shaped shape on the inner side of the shovel body 1.

[0035] In this embodiment, the fixing bolts 205 can fix the oblique strips 204 in the shovel plate body 1 and can be installed and removed as needed to meet different needs.

[0036] The working principle of this utility model is as follows:

[0037] The shovel body 1 is connected and installed to the tunnel boring machine through the connecting seat 4. When the tunnel boring machine is working, the cutting head continuously crushes the rock. The shovel body 1 scoops up the crushed stone during the movement of the tunnel boring machine. The two oblique bars 204 make the crushed stone gather towards the middle star wheel 5. The two star wheels 5 rotate to drive the crushed stone to move into the material trough 202. The conveyor belt 201 in the material trough 202 transfers the crushed stone to the rear of the equipment.

[0038] The star wheel 5 continues to rotate, and the crushed stones in the inner corner of the star wheel 5 enter the side trough 203, and under the action of the bottom slope of the side trough 203, enter the material trough 202, and are moved to the rear of the equipment through the conveyor belt 201 in the material trough 202;

[0039] The protective cover 306 protects the outer side of the star wheel 5. During installation, the limit bar 301 is aligned with the limit groove 307 and inserted, and fixed by the installation bolt 308. Finally, the limit bar 301 is pulled into the groove, and the ring 304 is put on the outer side of the fixing rod 303 to complete the limitation of the installation bolt 308, thereby achieving the purpose of preventing the installation bolt 308 from loosening.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roadheader blade, comprising a blade body (1), characterized in that: Two symmetrically distributed star wheels (5) are provided on the inner side of the shovel plate body (1), a protective mechanism (3) is provided on the outer side of the star wheels (5), a connecting seat (4) is fixedly connected to the rear side of the shovel plate body (1), and a conveying mechanism (2) is provided on the inner side of the shovel plate body (1); The protection mechanism (3) includes a protection cover (306), the protection cover (306) is arranged outside the star wheel (5), a mounting bolt (308) is provided on the top of the protection cover (306), a groove is provided on the top of the mounting bolt (308), and a limiting belt (305) is provided on the top of the protection cover (306); The conveying mechanism (2) comprises a side groove (203), the side groove (203) is opened on the inner side of the shovel plate body (1), and two symmetrically distributed oblique bars (204) are provided on the inner side of the shovel plate body (1).

2. The tunnel boring machine blade according to claim 1, characterized in that: The outer side of the star wheel (5) is provided with screw holes (302) distributed in an arc shape with equal intervals, and the inner side of the screw holes (302) is adapted to the outer side of the mounting bolts (308).

3. The roadheader blade according to claim 1, characterized in that: The outer side of the protective cover (306) is fixedly connected to a fixing rod (303), one end of the limiting belt (305) is fixedly connected to a circular ring (304), and the inner side of the circular ring (304) is adapted to the outer side of the fixing rod (303).

4. The tunnel boring machine blade according to claim 1, characterized in that: The outer side of the star wheel (5) is fixedly connected to a limiting strip (301), the inner side of the protective cover (306) is provided with a limiting groove (307), and the outer side of the limiting strip (301) is slidably connected to the inner side of the limiting groove (307).

5. The roadheader blade according to claim 1, characterized in that: The inner bottom of the side groove (203) is arranged in an inclined surface, a material groove (202) is provided on the inner side of the shovel plate body (1), the opposite surfaces of the two side grooves (203) are connected to the inner side of the material groove (202), and a conveyor belt (201) is provided on the inner side of the material groove (202).

6. The roadheader blade according to claim 1, characterized in that: A fixing bolt (205) is provided at the top of the oblique strip (204), and the bottom end of the fixing bolt (205) passes through the oblique strip (204) and extends into the interior of the shovel plate body (1).

7. The roadheader blade according to claim 1, characterized in that: The two oblique strips (204) are arranged in an eight-shaped manner on the inner side of the shovel plate body (1).

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