Novel wear-resistant tunneling pick

Abstract

The utility model relates to a novel wear -resisting tunneling pick, especially in the technical field of mine machinery and geotechnical tunneling equipment, the utility model discloses a tooth body, wheel disc, alloy head, tooth handle, alloy bean, first chip groove, second chip groove, snap spring. Alloy head is fixed on the tooth body upper end through vacuum welding, and the surface is equipped with pyramid reinforcing rib. The tooth body upper portion inserts the alloy bean of staggered arrangement, and is equipped with the first chip groove and second chip groove to be connected to high -efficient chip removal, and the tooth body upper and lower end all are equipped with alloy powder layer to enhance wear resistance, and tooth handle is fixed through snap spring. The utility model has the advantages of reliable connection, wear -resisting impact resistance, and the smooth chip removal, and the service life and tunneling efficiency of pick are improved significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of mining machinery and rock and soil tunneling equipment, and in particular to a new type of wear-resistant tunneling cutting tooth. Background Technology

[0002] Cutting teeth are key components in tunneling equipment that come into direct contact with rock and coal seams. Their wear resistance and impact resistance directly affect the equipment's working efficiency and operating costs. Existing cutting teeth generally suffer from the following problems: insufficient welding strength between the alloy head and the tooth body, making them prone to detachment; poor wear resistance of the tooth head, making it susceptible to abrasion by rock powder; poor chip removal leading to excessively rapid temperature rise and additional abrasive wear; and the overall structure is prone to failure under strong impact. Utility Model Content

[0003] (1) Technical solution To solve the above-mentioned technical problems, this utility model provides a novel wear-resistant tunneling cutter, including a tooth body, a wheel, an alloy head, a tooth shank, alloy beads, a first chip removal groove, a second chip removal groove, and a retaining spring. The alloy head is fixed to the upper end of the tooth body by vacuum welding. The wheel is located at the lower end of the tooth body, and the tooth shank is connected to the bottom of the wheel. The outer surface of the upper part of the alloy head is provided with several first reinforcing ribs evenly distributed in a ring, and the outer surface of the lower part of the alloy head is provided with several second reinforcing ribs evenly distributed in a ring. Several alloy beads are circumferentially embedded in the upper part of the tooth body. Several arc-shaped first chip removal grooves are provided in the area between the alloy beads in the upper part of the tooth body. The second chip removal groove is spirally arranged on the outer surface of the tooth body below the alloy beads. The lower end of the first chip removal groove is connected to the second chip removal groove. A first alloy powder layer is provided at the upper end of the tooth body, and a second alloy powder layer is provided at the lower end of the tooth body. An annular retaining groove is provided on the bottom outer diameter of the tooth shank, and the retaining spring is provided on the outer diameter of the annular retaining groove.

[0004] Preferably, both the first reinforcing rib and the second reinforcing rib are pyramidal in shape and integrally formed with the alloy head.

[0005] Preferably, the size of the first reinforcing rib is smaller than the size of the second reinforcing rib.

[0006] Preferably, both the alloy head and the alloy bead are made of low-cobalt, coarse-grained tungsten carbide cemented carbide.

[0007] Preferably, the width of the first chip removal groove increases sequentially from top to bottom.

[0008] Preferably, both the first alloy powder layer and the second alloy powder layer are nickel-based tungsten carbide composite powder layers.

[0009] Preferably, the alloy beads are arranged in two rows, and the alloy beads between the two rows are staggered.

[0010] (2) Beneficial effects This utility model provides a novel wear-resistant tunneling cutting tooth, which has the following advantages compared with the prior art: 1. The alloy head adopts vacuum welding technology, which makes the weld purer, avoids the formation of oxides, and thus improves the quality and strength of the weld.

[0011] 2. The alloy head is equipped with pyramidal reinforcing ribs of different sizes, which enhances the pre-splitting effect during rock breaking and improves the wear resistance of the alloy head itself.

[0012] 3. The alloy powder layer set on the head and lower part of the tooth body significantly improves the wear resistance and high temperature resistance of key areas.

[0013] 4. The circumferentially embedded alloy beads, especially the two rows of staggered alloy beads, can effectively absorb and disperse impact loads and protect the tooth body.

[0014] 5. The dual-channel chip removal system, which connects the arc-shaped first chip removal groove and the spiral second chip removal groove, can quickly guide the chips that fall off the alloy head to the rear of the tooth body and discharge them, effectively preventing chip accumulation and repeated grinding, and reducing working resistance and temperature rise. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention.

[0016] Figure 2 This is a top view of the alloy head of this utility model.

[0017] The attached figures are labeled as follows: 1-tooth body, 2-wheel, 3-alloy head, 31-first reinforcing rib, 32-second reinforcing rib, 4-tooth shank, 5-alloy bead, 6-first chip removal groove, 7-second chip removal groove, 8-first alloy powder layer, 9-second alloy powder layer, 10-ring clip. Detailed Implementation

[0018] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 , 2As shown, the present invention discloses a novel wear-resistant tunneling cutter, comprising a tooth body 1, a wheel 2, an alloy head 3, a tooth shank 4, an alloy bead 5, a first chip removal groove 6, a second chip removal groove 7, and a retaining spring 10. The alloy head 3 is fixed to the upper end of the tooth body 1 by vacuum welding. The use of vacuum welding technology results in a cleaner weld, preventing oxide formation and thus improving weld quality and strength. The wheel 2 is located at the lower end of the tooth body 1, and the tooth shank 4 is connected to the bottom of the wheel 2. The upper outer surface of the alloy head 3 is provided with several first reinforcing ribs 31 evenly distributed in a ring, and the lower outer surface of the alloy head 3 is provided with several... A second reinforcing rib 32 is evenly distributed in a ring. Several alloy beads 5 are embedded circumferentially in the upper part of the tooth body 1. Several arc-shaped first chip removal grooves 6 are provided in the area between the alloy beads 5 in the upper part of the tooth body 1. The second chip removal groove 7 is spirally arranged on the outer surface of the tooth body 1 below the alloy beads 5. The lower end of the first chip removal groove 6 is connected to the second chip removal groove 7. The upper end of the tooth body 1 is provided with a first alloy powder layer 8. The lower end of the tooth body 1 is provided with a second alloy powder layer 9. The bottom outer diameter of the tooth shank 4 is provided with an annular groove, and it is fixedly connected to the drill base of the tunneling equipment by being installed on a high-strength retaining spring 10.

[0020] The first reinforcing rib 31 and the second reinforcing rib 32 are both pyramidal in shape and integrally formed with the alloy head 3.

[0021] The size of the first reinforcing rib 31 is smaller than that of the second reinforcing rib 32. This design enables gradient rock breaking and optimizes stress distribution.

[0022] The alloy head 3 is made of low-cobalt, coarse-grained tungsten carbide wear-resistant hard alloy 35-40, which improves rock-breaking ability and extends the life of the cutting teeth; the alloy bead 5 is made of low-cobalt, coarse-grained tungsten carbide, which has strong impact resistance and protects the tooth body 1.

[0023] The width of the first chip removal groove 6 increases from top to bottom, which is beneficial for collecting and initially guiding the chips. On the outer surface of the tooth body 1 below the alloy bead 5, a spiral second chip removal groove 7 is machined, and the lower end of the first chip removal groove 6 is connected to the second chip removal groove 7, together forming a continuous chip removal channel from the tooth head to the tooth body.

[0024] Both the first alloy powder layer 8 and the second alloy powder layer 9 are nickel-based tungsten carbide composite powder layers, which enhance the wear resistance and high temperature resistance of the cutting teeth.

[0025] The alloy beads 5 are arranged in two rows, with the alloy beads 5 in a staggered arrangement between the two rows, forming an effective impact barrier. Content not described in detail in this specification is prior art known to those skilled in the art.

[0026] The embodiments described above are merely preferred embodiments of the present invention, and are described in a relatively specific and detailed manner. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any improvements made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A novel wear-resistant tunneling cutting tooth, characterized in that, The device includes a tooth body (1), a wheel (2), an alloy head (3), a tooth shank (4), an alloy bead (5), a first chip removal groove (6), a second chip removal groove (7), and a retaining ring (10). The alloy head (3) is fixed to the upper end of the tooth body (1) by vacuum welding. The wheel (2) is located at the lower end of the tooth body (1). The bottom of the wheel (2) is connected to the tooth shank (4). The outer surface of the upper part of the alloy head (3) is provided with several first reinforcing ribs (31) arranged in a ring. The outer surface of the lower part of the alloy head (3) is provided with several second reinforcing ribs (32) arranged in a ring. The tooth body (1) The upper circumferential part is embedded with a number of alloy beans (5), and the upper part of the tooth body (1) is provided with a number of arc-shaped first chip removal grooves (6) in the area between the alloy beans (5). The outer surface of the tooth body (1) below the alloy beans (5) is spirally provided with a second chip removal groove (7). The lower end of the first chip removal groove (6) is connected to the second chip removal groove (7). The upper end of the tooth body (1) is provided with a first alloy powder layer (8), and the lower end of the tooth body (1) is provided with a second alloy powder layer (9). The bottom outer diameter of the tooth shank (4) is provided with an annular groove, and the outer diameter of the annular groove is provided with a retaining spring (10).

2. The novel wear-resistant tunneling cutting tooth according to claim 1, characterized in that, The first reinforcing rib (31) and the second reinforcing rib (32) are both pyramidal in shape and integrally formed with the alloy head (3).

3. The novel wear-resistant tunneling cutting tooth according to claim 2, characterized in that, The size of the first reinforcing rib (31) is smaller than the size of the second reinforcing rib (32).

4. A novel wear-resistant tunneling cutting tooth according to claim 2, characterized in that, Both the alloy head (3) and the alloy bead (5) are made of low-cobalt, coarse-grained tungsten carbide hard alloy.

5. A novel wear-resistant tunneling cutter according to claim 1, characterized in that, The width of the first chip removal groove (6) increases from top to bottom.

6. A novel wear-resistant tunneling cutting tooth according to claim 1, characterized in that, Both the first alloy powder layer (8) and the second alloy powder layer (9) are nickel-based tungsten carbide composite powder layers.

7. A novel wear-resistant tunneling cutter according to claim 1, characterized in that, The alloy beans (5) are arranged in two rows, and the alloy beans (5) between the two rows are arranged in a staggered manner.

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