A bimetallic composite reamer tooth

Abstract

The utility model provides a bimetallic composite reamer tooth, which belongs to the technical field of excavation equipment, and includes a reamer tooth shank and a reamer tooth tip. The rear end face of the reamer tooth shank is provided with an insertion slot, and positioning columns are respectively provided on the left and right sides of the reamer tooth shank. The positioning columns penetrate the through hole from the outside to the inside, and the front end face of the reamer tooth shank is integrally formed with a protruding joint portion, and the reamer tooth tip wraps the protruding joint portion and is solidified. The utility model provides a bimetallic composite reamer tooth, the hardness of the reamer tooth tip is greater than the hardness of the reamer tooth shank, the reamer tooth tip is integrally cast through the protruding joint portion of the reamer tooth shank, and the reamer tooth shank is installed on the reamer seat through the insertion slot and the positioning column. The reamer tooth tip is the main wear area, and its hardness is relatively high, which can increase the life of the reamer tooth as a whole. In addition, once the reamer tooth tip of the reamer tooth is severely worn, the reamer tooth as a whole can be removed from the reamer seat and replaced with a new reamer tooth, without the need to replace the reamer as a whole, thereby reducing costs.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavating equipment, and more specifically relates to a bimetallic composite reamer tooth. Background Art

[0002] In dredging projects in inland lakes and coastal ports around the world, cutter suction dredgers are indispensable operating equipment, and the auger is the core equipment of the cutter suction dredger.

[0003] The reamer body has a plurality of reamer teeth, which are fixed one by one on a plurality of reamer seats to form the main working parts. As a wear part, the reamer teeth determine the working life of the reamer body.

[0004] The ends of the reamer teeth are usually the areas with the most severe wear. When the ends of the reamer teeth are worn to a certain extent, the reamer needs to be scrapped, and the overall cost of replacing the reamer is high. Utility Model Content

[0005] The utility model aims to provide a bimetallic composite reamer tooth, aiming to solve the problem that the reamer needs to be scrapped after the end of the reamer tooth is worn to a certain extent, and the overall cost of replacing the reamer is high.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a bimetallic composite reamer tooth, including a reamer tooth shank and a reamer tooth tip, the hardness of the reamer tooth tip is greater than the hardness of the reamer tooth shank, the rear end face of the reamer tooth shank is provided with an insertion groove, the left and right sides of the reamer tooth shank are respectively provided with through holes connected to the insertion groove, a positioning column is provided in the through hole, the positioning column passes through the through hole from the outside to the inside and is inserted into the reserved hole on the side of the reamer seat, the front end face of the reamer tooth shank is integrally formed with a protruding joint portion, the reamer tooth tip is cast at the front end of the reamer tooth shank and wraps the protruding joint portion for solidification.

[0007] In a possible implementation, the protruding joint portion includes two protruding edges that are arranged in parallel and at intervals, and the two protruding edges are arranged in sequence from top to bottom in a horizontal direction.

[0008] In a possible implementation manner, an anti-slip block is provided at the end of the protruding edge, and the width of the anti-slip block is greater than the thickness of the protruding edge.

[0009] In a possible implementation manner, a transition arc is provided between the anti-slip block and the protruding edge.

[0010] In a possible implementation, a welding grinding area is provided at a circumferential joint between the reamer tooth shank and the reamer tooth tip.

[0011] In a possible implementation, a guide groove is provided at the bottom of the insertion slot, a rear end of the guide groove extends to a rear end surface of the reamer shank, and the guide groove is used for slidingly cooperating with a guide edge of the reamer seat.

[0012] In a possible implementation, the length of the guide groove is smaller than the length of the insertion groove.

[0013] In a possible implementation, an insertion end is provided at one inner end of the positioning column, the outer diameter of the insertion end is smaller than the outer diameter of the positioning column and is inserted into a reserved hole of the reamer seat.

[0014] In a possible implementation, an outer end of the positioning column protrudes from a side surface of the reamer shank, and a welding fixing area is provided between the outer periphery of the positioning column and the side surface of the reamer shank.

[0015] In a possible implementation, the height of the insertion slot decreases from the back to the front.

[0016] The beneficial effect of a bimetallic composite reamer tooth provided by the utility model is that: compared with the prior art, after the reamer tooth shank is formed, a protruding joint portion is formed on its front end surface, and the reamer tooth tip is cast and formed at the front end of the reamer tooth shank and wraps the protruding joint portion to solidify and form, so that the reamer tooth shank and the reamer tooth tip are connected together. The insertion groove on the rear end surface of the reamer tooth shank is used to be sleeved on the reamer seat, and then two positioning columns are used to penetrate the reserved holes on both sides of the reamer seat from the through holes on both sides, so as to position the reamer tooth shank, and the reamer tooth shank and the reamer tooth tip are stably installed on the reamer seat, wherein the hardness of the reamer tooth tip is greater than the hardness of the reamer tooth shank. The bimetallic composite reamer tooth provided by the utility model has a hardness greater than that of the reamer tooth shank, and the reamer tooth tip is integrally cast through the protruding joint portion of the reamer tooth shank, and the reamer tooth shank is installed on the reamer seat through the insertion groove and the positioning column. The tip of the reamer tooth is the main wear area, and its high hardness can increase the life of the entire reamer tooth. Once the tip of the reamer tooth is severely worn, the reamer tooth can be removed from the reamer seat and replaced with a new one, without the need to replace the entire reamer, thus reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The utility model provides a bimetallic composite reamer tooth assembly diagram;

[0019] Figure 2 A rear side view of a bimetallic composite reamer tooth provided by the utility model;

[0020] Figure 3 A schematic diagram of the assembly of a bimetallic composite reamer tooth provided by the utility model;

[0021] Figure 4 for Figure 3 Sectional view along AA;

[0022] Figure 5 for Figure 3 A partial enlarged view of point B in the middle.

[0023] Description of reference numerals:

[0024] 100, reamer tooth handle; 110, insertion slot; 120, guide slot; 130, positioning column; 131, insertion end; 132, welding fixing area; 140, protruding joint; 141, protruding edge; 142, anti-slip block; 143, transition arc; 150, welding grinding area; 200, reamer tooth tip; 300, reamer seat; 310, reserved hole; 320, guide edge. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0027] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0028] See also Figures 1 to 5Now, a bimetallic composite reamer tooth provided by the utility model is described. A bimetallic composite reamer tooth comprises a reamer tooth shank 100 and a reamer tooth tip 200, the hardness of the reamer tooth tip 200 is greater than the hardness of the reamer tooth shank 100, a plug-in slot 110 is provided on the rear end face of the reamer tooth shank 100, through holes connected to the plug-in slot 110 are provided on the left and right sides of the reamer tooth shank 100, and a positioning column 130 is provided in the through hole, and the positioning column 130 passes through the through hole from outside to inside and is inserted into the reserved hole 310 on the side of the reamer seat, a protruding joint portion 140 is integrally formed on the front end face of the reamer tooth shank 100, and the reamer tooth tip 200 is cast at the front end of the reamer tooth shank 100 and wraps the protruding joint portion 140 for solidification.

[0029] The utility model provides a bimetallic composite reamer tooth. Compared with the prior art, after the reamer tooth shank 100 is formed, a protruding joint portion 140 is formed on its front end surface. The reamer tooth tip 200 is cast and formed at the front end of the reamer tooth shank 100 and wraps the protruding joint portion 140 to solidify and form, so that the reamer tooth shank 100 and the reamer tooth tip 200 are connected together. The insertion groove 110 on the rear end surface of the reamer tooth shank 100 is used to be sleeved on the reamer seat, and then two positioning columns 130 are used to penetrate the reserved holes 310 on both sides of the reamer seat 300 from the through holes on both sides, so as to position the reamer tooth shank 100. The reamer tooth shank 100 and the reamer tooth tip 200 are stably installed on the reamer seat 300, wherein the hardness of the reamer tooth tip 200 is greater than the hardness of the reamer tooth shank 100. The utility model provides a bimetallic composite reamer tooth, the hardness of the reamer tooth tip 200 is greater than the hardness of the reamer tooth shank 100, the reamer tooth tip 200 is integrally cast through the protruding joint portion 140 of the reamer tooth shank 100, and the reamer tooth shank 100 is installed on the reamer seat through the insertion slot 110 and the positioning column 130. The reamer tooth tip 200 is the main wear area, and its hardness is relatively high, which can increase the life of the entire reamer tooth. In addition, once the reamer tooth tip 200 of the reamer tooth is severely worn, the reamer tooth can be removed from the reamer seat 300 as a whole and replaced with a new reamer tooth, without the need to replace the reamer as a whole, thereby reducing costs.

[0030] It is worth noting that the hardness of the reamer tooth tip 200 is greater than that of the reamer tooth shank 100. For example, the reamer tooth tip 200 is made of high-chromium wear-resistant material, and the reamer tooth shank 100 is made of ductile cast iron or high-manganese steel. The reamer tooth tip 200 has better wear resistance.

[0031] See also Figure 3 and Figure 5 The protruding joint 140 includes two protruding edges 141 arranged in parallel and spaced apart, and the two protruding edges 141 are integrally cast with the reamer shank 100. The two protruding edges 141 are arranged horizontally from top to bottom, and the rear end of the reamer tooth tip 200 is wrapped around the outer periphery of the two protruding edges 141, which can form a structurally stable connection relationship.

[0032] Among them, an anti-slip block 142 is provided at the end of the protruding edge 141, and the width of the anti-slip block 142 is greater than the thickness of the protruding edge 141. When the rear end of the reamer tooth tip 200 is wrapped around the outer periphery of the two protruding edges 141, it is also wrapped around the outer periphery of the anti-slip block 142 to further improve the bonding strength between the reamer tooth tip 200 and the reamer tooth handle 100.

[0033] Preferably, a transition arc 143 is provided between the anti-slip block 142 and the protruding edge 141. When the reamer tooth tip 200 is solidified and formed, the bonding property in the transition arc 143 area is better, thus avoiding sharp-angle structure, reducing internal stress and improving structural strength.

[0034] See also Figure 1 and Figure 3 The circumferential joint of the reamer tooth shank 100 and the reamer tooth tip 200 is provided with a welding grinding area 150. After the reamer tooth tip 200 is cast at the front end of the reamer tooth shank 100, a small gap will appear at the joint of the reamer tooth shank 100 and the reamer tooth tip 200 due to solidification. At this time, a groove is opened at the joint for circumferential welding, and the part protruding from the joint 140 is polished and smoothed after welding to improve the bonding strength of the reamer tooth shank 100 and the reamer tooth tip 200.

[0035] See also Figure 2 and Figure 3 A guide groove 120 is provided at the bottom of the insertion groove 110, and the rear end of the guide groove 120 extends to the rear end surface of the reamer shank 100. A guide ridge 320 is integrally formed on the lower end surface of the reamer seat 300. The guide ridge 320 slidably cooperates with the guide groove 120, thereby providing guidance for the reamer shank 100 to be inserted into the reamer seat 300, and facilitating the installation of the reamer shank 100 on the reamer seat.

[0036] Specifically, the length of the guide groove 120 is less than the length of the insertion groove 110. The guide groove 120 can also limit the depth of the reamer seat inserted into the reamer shank 100, avoiding interference between the end of the reamer seat and the front side of the insertion groove 110, thereby affecting the insertion and matching relationship between the positioning column 130 and the reserved hole 310.

[0037] See also Figure 2 and Figure 4 An insertion end 131 is provided at one end of the inner side of the positioning column 130. The outer diameter of the insertion end 131 is smaller than the outer diameter of the positioning column 130 and is inserted into the reserved hole 310 of the reamer seat. The outer diameter of the insertion end 131 is slightly smaller than the inner diameter of the reserved hole 310. The insertion end 131 has a certain gap relative to the reserved hole 310, which facilitates the smooth insertion of the insertion end 131 into the reserved hole 310.

[0038] In addition, one outer end of the positioning column 130 protrudes from the side of the reamer shank 100, and a welding fixing area 132 is provided on the outer periphery of the positioning column 130 and the side of the reamer shank 100. The welding fixing area 132 can be spot welded to prevent the positioning column 130 from moving axially and falling out of the through hole.

[0039] See also Figure 3 The height of the insertion slot 110 decreases from the back to the front, and the reamer shank 100 can be smoothly mounted on the outside of the reamer seat 300.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bimetallic composite reamer tooth, characterized in that: The invention comprises a reamer tooth shank (100) and a reamer tooth tip (200), wherein the hardness of the reamer tooth tip (200) is greater than that of the reamer tooth shank (100), a plug-in slot (110) is provided on the rear end surface of the reamer tooth shank (100), through holes communicating with the plug-in slot (110) are provided on the left and right sides of the reamer tooth shank (100), a positioning column (130) is provided in the through hole, the positioning column (130) passes through the through hole from outside to inside and is inserted into a reserved hole (310) on the side of the reamer seat, a protruding joint portion (140) is integrally formed on the front end surface of the reamer tooth shank (100), and the reamer tooth tip (200) is cast at the front end of the reamer tooth shank (100) and wraps the protruding joint portion (140) to be solidified.

2. A bimetallic composite reamer tooth according to claim 1, characterized in that: The protruding joint portion (140) comprises two protruding edges (141) arranged in parallel and at intervals, and the two protruding edges (141) are arranged in sequence from top to bottom in a transverse direction.

3. A bimetallic composite reamer tooth as claimed in claim 2, characterized in that: An anti-slip block (142) is provided at the end of the protruding edge (141), and the width of the anti-slip block (142) is greater than the thickness of the protruding edge (141).

4. A bimetallic composite reamer tooth as claimed in claim 3, characterized in that: A transition arc (143) is provided between the anti-slip block (142) and the protruding edge (141).

5. A bimetallic composite reamer tooth according to claim 1, characterized in that: A welding grinding area (150) is provided at the circumferential joint portion of the reamer tooth shank (100) and the reamer tooth tip (200).

6. A bimetallic composite reamer tooth according to claim 1, characterized in that: A guide groove (120) is provided at the bottom of the insertion groove (110), the rear end of the guide groove (120) extends to the rear end surface of the reamer shank (100), and the guide groove (120) is used for slidingly cooperating with a guide edge (320) of the reamer seat (300).

7. A bimetallic composite reamer tooth as claimed in claim 6, characterized in that: The length of the guide groove (120) is smaller than the length of the insertion groove (110).

8. A bimetallic composite reamer tooth according to claim 1, characterized in that: An insertion end (131) is provided at one inner end of the positioning column (130); the outer diameter of the insertion end (131) is smaller than the outer diameter of the positioning column (130) and is inserted into a reserved hole (310) of the reamer seat.

9. A bimetallic composite reamer tooth according to claim 1, characterized in that: One end of the outer side of the positioning column (130) protrudes from the side of the reamer shank (100), and a welding fixing area (132) is provided between the outer periphery of the positioning column (130) and the side of the reamer shank (100).

10. A bimetallic composite reamer tooth according to claim 1, characterized in that: The height of the insertion slot (110) decreases from the back to the front.

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