An impact-resistant rotary excavating cutting tooth assembly

Abstract

The utility model relates to rotary digging cutting tooth technical field, concretely is a kind of impact-resistant rotary digging cutting tooth assembly, including cutting tooth seat, cutting tooth sleeve and cutting tooth, cutting tooth seat main body is the iron block of oblique extension of cuboid, cutting tooth seat cuboid part is equipped with cutting tooth mounting hole, cutting tooth seat oblique extension part is equipped with cutting tooth seat mounting hole, cutting tooth mounting hole is the through-hole of upper wide and lower narrow;Cutting tooth sleeve includes cutting tooth sleeve outer wall, cutting tooth sleeve is the cylindrical structure of upper wide and lower narrow and inside hollow, cutting tooth sleeve outer wall upper end extends out the clamping block outward, spring is placed below clamping block, spring is wrapped spring rustproof cover outside;Cutting tooth includes tooth body and tooth handle, the upper portion of cutting tooth is tooth body, lower portion is tooth handle, tooth body and tooth handle are integrally formed, tooth handle lower part is equipped with snap spring groove;The utility model is through the setting cutting tooth sleeve to reduce the impact force when first impact when cutting tooth is operated, impact-resistant effect is realized, to solve the technical problem that cutting tooth is frequently broken and damaged.

Description

Technical Field

[0001] This utility model relates to the field of rotary drilling cutting tooth technology, specifically to an impact-resistant rotary drilling cutting tooth assembly. Background Technology

[0002] A rotary drilling rig, also known as a rotary drilling machine or pile driver, is a comprehensive drilling machine. It uses a drill rod power head to provide torque to the drill rod, and a pressurizing device transmits pressure to the drill rod and drill bit via a pressurizing power head. The drill rod rotates to break up the rock and soil, directly loading the rock and soil into the drill bit. Drill bits include augers, core drills (sand bucket drills), and rock core drills. These various drill bits are used for hole digging, characterized by fast hole formation, low pollution, and high mobility. The cutting teeth mounted on augers, core drills, and rock core drills are used to break and cut the rock.

[0003] In the existing technology, the impact resistance of cutting teeth is very poor, which often leads to breakage and damage. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an impact-resistant rotary drilling cutting tooth assembly.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an impact-resistant rotary drilling cutter assembly, including a cutter holder, a cutter sleeve, and cutters. The cutter holder body is a rectangular iron block extending obliquely. A cutter mounting hole is opened in the rectangular part of the cutter holder, and a cutter holder mounting hole is opened in the oblique extension part of the cutter holder. The cutter mounting hole is a through hole that is wider at the top and narrower at the bottom. The cutter sleeve includes an outer wall of the cutter sleeve. The cutter sleeve is a cylindrical structure that is wider at the top and narrower at the bottom and hollow inside. A snap-fit ​​block extends outward from the upper end of the outer wall of the cutter sleeve. A spring is placed below the snap-fit ​​block, and the spring is wrapped with a spring anti-rust cover. The cutter includes a tooth body and a tooth shank. The upper part of the cutter is the tooth body, and the lower part is the tooth shank. The tooth body and the tooth shank are integrally formed. A retaining spring groove is opened at the lower part of the tooth shank.

[0006] Specifically, an alloy head placement groove is opened on the upper part of the tooth body, and several tooth body brazing grooves are opened on the inner wall of the alloy head placement groove.

[0007] Specifically, a cutting tooth alloy head is placed in the alloy head placement groove, and several alloy head brazing grooves are opened in the lower part of the cutting tooth alloy head that extends into the tooth body.

[0008] Specifically, the alloy head placement groove of the tooth body is fixedly connected to the cutting tooth alloy head by brazing.

[0009] Specifically, reinforcing ribs are provided on the outer wall of the tooth body, and the reinforcing ribs are integrally formed with the tooth body.

[0010] Specifically, a cutting tooth sleeve is fitted onto the cutting tooth holder, and the cutting tooth is inserted into the cutting tooth sleeve and fixedly installed on the cutting tooth holder by engaging the retaining spring through the retaining spring groove.

[0011] Specifically, the cutting tooth holder mounting hole is a through hole, and the cutting tooth holder is fixed to the rotary drilling machine with bolts.

[0012] Specifically, the spring is a high-strength alloy spring, and the spring anti-rust cover is fitted on the outside of the spring. The spring anti-rust cover is made of rubber.

[0013] This utility model has the following beneficial effects:

[0014] The impact-resistant rotary drilling cutter assembly designed in this utility model reduces the impact force during the first impact when the cutter is working by setting a cutter sleeve, thereby achieving an impact-resistant effect and solving the technical problem that often leads to the breakage and damage of the cutter. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an impact-resistant rotary drilling cutter assembly;

[0016] Figure 2 This is a schematic diagram of the cutting tooth structure of the impact-resistant rotary drilling cutting tooth assembly;

[0017] Figure 3 This is a schematic diagram of the cutting tooth sleeve structure of the impact-resistant rotary drilling cutting tooth assembly;

[0018] Figure 4 This is a schematic diagram of the structure of the cutting tooth body of the impact-resistant rotary drilling cutting tooth assembly;

[0019] Figure 5 This is a schematic diagram of the alloy head of the cutting teeth in the impact-resistant rotary drilling cutting tooth assembly.

[0020] like Figures 1-5 As shown: 1-cutting tooth holder, 2-cutting tooth sleeve, 3-cutting tooth, 11-cutting tooth mounting hole, 12-cutting tooth holder mounting hole, 21-outer wall of cutting tooth sleeve, 22-inner wall of cutting tooth sleeve, 23-spring anti-rust cover, 24-spring, 25-clamping block, 31-cutting tooth alloy head, 32-tooth body, 33-tooth shank, 34-circlip groove, 311-alloy head brazing groove, 321-alloy head placement groove, 322-tooth body brazing groove, 323-reinforcing rib. Detailed Implementation

[0021] The technical solutions of the present utility model will be described in further detail below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] like Figures 1-5As shown, an impact-resistant rotary drilling cutter assembly includes a cutter seat 1, a cutter sleeve 2, and a cutter 3. The cutter seat 1 is a rectangular iron block extending obliquely. A cutter mounting hole 11 is opened in the rectangular part of the cutter seat 1, and a cutter seat mounting hole 12 is opened in the oblique extension part of the cutter seat 1. The cutter mounting hole 11 is a through hole that is wider at the top and narrower at the bottom. The cutter sleeve 2 includes an outer wall 21. The cutter sleeve 2 is a cylindrical structure that is wider at the top and narrower at the bottom and hollow inside. A snap-fit ​​block 25 extends outward from the upper end of the outer wall 21. A spring 24 is placed below the snap-fit ​​block 25. The spring 24 is covered with a spring anti-rust cover 23. The cutter 3 includes a tooth body 32 and a tooth shank 33. The upper part of the cutter 3 is the tooth body 32, and the lower part is the tooth shank 33. The tooth body 32 and the tooth shank 33 are integrally formed. A retaining spring groove 34 is opened at the lower part of the tooth shank 33.

[0023] A tooth body 32 has an alloy head placement groove 321 on its upper part, and a number of tooth body brazing grooves 322 are formed on the inner wall of the alloy head placement groove 321.

[0024] A cutting tooth alloy head 31 is placed in the alloy head placement groove 321, and several alloy head brazing grooves 311 are opened in the lower part of the cutting tooth alloy head 31 that extends into the tooth body 32.

[0025] The alloy head placement groove 321 of the tooth body 32 is fixedly connected to the cutting tooth alloy head 31 by brazing.

[0026] The outer wall of the tooth body 32 is provided with reinforcing ribs 323, which are integrally formed with the tooth body 32.

[0027] A cutting tooth sleeve 2 is fitted onto the cutting tooth holder 1, and the cutting tooth 3 is inserted into the cutting tooth sleeve 2 and fixedly installed on the cutting tooth holder 1 by engaging the snap ring through the snap ring groove 34.

[0028] The cutting tooth holder mounting hole 12 is a through hole, and the cutting tooth holder 1 is fixed to the rotary drilling machine by bolts.

[0029] Spring 24 is made of high-strength alloy spring, and spring anti-rust cover 23 is fitted on the outside of spring 24. Spring anti-rust cover 23 is made of rubber.

[0030] When using it, first put the cutting tooth sleeve 2 on the cutting tooth seat 1, then put the cutting tooth 3 into the cutting tooth sleeve 2. After the cutting tooth 3 is put in, press the spring 24 to expose the retaining spring groove 34. Use the retaining spring to lock it into the retaining spring groove 34. After the cutting tooth 3 is fixed, fix the cutting tooth seat 1 to the rotary drilling machine with bolts.

[0031] This utility model is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

[0032] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant rotary drilling cutter assembly, characterized in that, The device includes a cutting tooth holder (1), a cutting tooth sleeve (2), and cutting teeth (3). The cutting tooth holder (1) is a rectangular iron block extending obliquely. The rectangular part of the cutting tooth holder (1) has a cutting tooth mounting hole (11), and the obliquely extending part of the cutting tooth holder (1) has a cutting tooth holder mounting hole (12). The cutting tooth mounting hole (11) is a through hole that is wider at the top and narrower at the bottom. The cutting tooth sleeve (2) includes a cutting tooth sleeve outer wall (21). The cutting tooth sleeve (2) is a cylindrical structure that is wider at the top and narrower at the bottom and hollow inside. The structure includes a snap-fit ​​block (25) extending outward from the upper end of the outer wall (21) of the cutting tooth sleeve, a spring (24) placed below the snap-fit ​​block (25), and a spring anti-rust cover (23) wrapped around the spring (24); the cutting tooth (3) includes a tooth body (32) and a tooth shank (33), the upper part of the cutting tooth (3) is the tooth body (32), the lower part is the tooth shank (33), the tooth body (32) and the tooth shank (33) are integrally formed, and a snap-fit ​​groove (34) is opened at the lower part of the tooth shank (33).

2. The impact-resistant rotary drilling cutter assembly according to claim 1, characterized in that, The upper part of the tooth body (32) is provided with an alloy head placement groove (321), and a number of tooth body brazing grooves (322) are provided on the inner wall of the alloy head placement groove (321).

3. The impact-resistant rotary drilling cutter assembly according to claim 2, characterized in that, The alloy head placement groove (321) is used to place the cutting tooth alloy head (31), and the lower part of the cutting tooth alloy head (31) that extends into the tooth body (32) has several alloy head brazing grooves (311).

4. The impact-resistant rotary drilling cutter assembly according to claim 3, characterized in that, The alloy head placement groove (321) of the tooth body (32) is fixedly connected to the cutting tooth alloy head (31) by brazing.

5. The impact-resistant rotary drilling cutter assembly according to claim 2, characterized in that, The outer wall of the tooth body (32) is provided with reinforcing ribs (323), and the reinforcing ribs (323) are integrally formed with the tooth body (32).

6. The impact-resistant rotary drilling cutter assembly according to claim 1, characterized in that, A cutting tooth sleeve (2) is fitted onto the cutting tooth holder (1), and the cutting tooth (3) is inserted into the cutting tooth sleeve (2) and fixedly installed on the cutting tooth holder (1) by engaging the snap ring through the snap ring groove (34).

7. The impact-resistant rotary drilling cutter assembly according to claim 1, characterized in that, The cutting tooth mounting hole (12) is a through hole, and the cutting tooth (1) is fixed to the rotary drilling machine by bolts.

8. The impact-resistant rotary drilling cutter assembly according to claim 1, characterized in that, The spring rust-proof cover (23) is fitted on the outside of the spring (24), and the spring rust-proof cover (23) is made of rubber.

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