A bundled impactor

Abstract

The utility model provides a kind of binding impactor, comprising: binding impact part, the outer surface of the binding impact part is equipped with deslagging groove;Sleeve assembly, sleeved in the outside of the binding impact part, the inner wall of the sleeve assembly and the deslagging groove form deslagging passage;Axial clamping structure, it is arranged between the sleeve assembly and the binding impact part, so that the binding impact part with the sleeve assembly has locking state and unlocking state.Compared with prior art, the binding impactor provided by the utility model can effectively deal with complex rock strata, especially in loose rock strata drilling to achieve efficient deslagging, wall protection and stable drilling.

Description

Technical Field

[0001] This utility model relates to the field of drilling construction technology, and in particular to a binding impactor. Background Technology

[0002] Down-the-hole drills are a type of construction equipment used for drilling pile holes. They are suitable for drilling blasting holes in metallurgical, coal mining, building materials, railway, hydropower construction, national defense construction, and earthwork projects. Compared with common rock drills, they have the advantages of high drilling efficiency and wide applicability, and are currently the most commonly used rock drilling equipment.

[0003] As a key piece of equipment in down-the-hole drilling, the binding impactor is characterized by its high impact energy and drilling efficiency in large-diameter and deep-hole drilling operations. However, when applied to areas with complex rock conditions, especially when encountering loose, broken, poorly cemented, or fracture-rich rock formations, problems such as difficulty in removing rock cuttings, a significantly increased risk of stuck drill bits, and borehole wall instability and collapse are exposed during use, which seriously restricts construction efficiency and borehole quality.

[0004] Therefore, there is an urgent need for a binding impactor that can effectively deal with complex rock formations, especially when drilling in loose rock formations, to achieve efficient slag removal, wall protection and collapse prevention, and stable drilling. Utility Model Content

[0005] To address the technical problems in existing technologies, this utility model provides a binding impactor that can effectively handle complex rock formations, especially achieving efficient slag removal, wall protection against collapse, and stable drilling when drilling in loose rock formations.

[0006] A binding impactor, comprising: A binding impact section, wherein the outer surface of the binding impact section is provided with a slag discharge groove; A sleeve assembly is fitted onto the outside of the binding impact part, and a slag discharge channel is formed between the inner wall of the sleeve assembly and the slag discharge groove. An axial snap-fit ​​structure is disposed between the sleeve assembly and the binding impact part, so that the binding impact part and the sleeve assembly have a locked state and an unlocked state. When the binding impact part and the sleeve assembly are in the locked state, the binding impact part drives the sleeve assembly to rotate axially and move along the axial direction. When the binding impact part and the sleeve assembly are in the unlocked state, the axial limit of the binding impact part is released, and the sleeve assembly and the binding impact part rotate relative to each other to switch between the locked state and the unlocked state.

[0007] Preferably, the sleeve assembly includes: A ring drill bit, wherein the front end of the ring drill bit is provided with wear-resistant teeth at intervals, and the axial snap-fit ​​structure is provided between the binding impact part and the ring drill bit; The protective tube is detachably connected to the rear end of the annular drill bit.

[0008] Preferably, the protective tube is connected to the annular drill bit via a threaded connection.

[0009] Preferably, the axial snap-fit ​​structure includes: A limiting groove is provided on the outer surface of the binding impact part, and the opening of the limiting groove is connected to the slag discharge groove; A limiting boss is provided on the inner surface of the annular drill bit. The limiting boss is configured to be able to move along the slag discharge groove and to be locked in the limiting groove by rotating and sliding. At least two limiting bosses are provided, and the limiting grooves are provided in a one-to-one correspondence with the limiting bosses.

[0010] Preferably, the axial snap-fit ​​structure further includes: The first limiting step is provided at the front end of the binding impact part; The second limiting step is provided on the inner wall of the annular drill bit. The first limiting step abuts against the second limiting step to limit the axial movement of the binding impact part, so that the limiting groove and the limiting boss are engaged by relative rotation.

[0011] Preferably, at least two protective tubes are provided, and the protective tubes are connected sequentially along the direction of the binding impact part, with adjacent protective tubes being fixedly connected by threads.

[0012] Preferably, the binding impact section is provided with a high-pressure air passage, and the front end face of the binding impact section is provided with a slag blowing channel, which connects the high-pressure air passage and the slag discharge trough for slag blowing.

[0013] Preferably, it further includes: The drill rod has an air supply channel inside for communicating with the high-pressure air passage; A connecting assembly is disposed between the drill rod and the binding impact part, so that the drill rod and the binding impact part are detachably connected.

[0014] Preferably, at least two drill rods are provided and are connected sequentially along the axial direction of the binding impact part, and adjacent drill rods are connected by a connecting assembly.

[0015] Preferably, the connection component includes: A connecting rod is disposed at the rear end of the binding impact part. The connecting rod is specifically a hexagonal structure and has a first fixing hole. The drill rod has an internal hexagonal hole that mates with the external hexagonal structure. The drill rod also has a second fixing hole. The first fixing hole and the second fixing hole form an installation hole for mounting a connector, so that the connecting rod is fixed to the drill rod.

[0016] Compared with the prior art, the binding impactor provided by this utility model has the following advantages. First, it is equipped with a binding impact part and a casing assembly. The casing assembly is fitted on the outside of the binding impact part, and the outer surface of the binding impact part is provided with slag discharge grooves at intervals. The inner wall of the casing assembly and the slag discharge grooves form a slag discharge channel. During the drilling process, the casing assembly supports the hole wall to prevent the wall collapse. Rock cuttings can be discharged from the hole through the slag discharge channel. In this way, the problems of rock cuttings not being discharged in time, drill bit jamming, and hole wall collapse are avoided. Secondly, an axial locking structure is also provided, which is located between the casing assembly and the binding impact part. This allows the binding impact part and the casing assembly to have locked and unlocked states. When the binding impact part and the casing assembly are in the locked state, the binding impact part can drive the casing assembly to rotate axially and move along the axial direction, so that the casing assembly can drill along with the borehole. When the binding impact part and the casing assembly are in the unlocked state, the axial limit of the binding impact part is released, allowing the binding impact part to exit from the casing assembly. There is relative rotation between the casing assembly and the binding impact part, which is used to switch between the locked and unlocked states. Therefore, compared with the prior art, the binding impactor provided by this utility model embodiment can effectively cope with complex rock formations, especially achieving efficient slag removal, wall protection and collapse prevention, and stable drilling when drilling in loose rock formations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a binding impactor provided in an embodiment of this utility model; Figure 2 An exploded view of a binding impactor provided in an embodiment of this utility model; Figure 3 A schematic diagram of the binding impact part provided in an embodiment of this utility model; Figure 4 A schematic diagram of a ring drill bit provided in an embodiment of this utility model; Figure 5A schematic diagram of the structure of the protective tube provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of a drill rod provided in an embodiment of the present utility model.

[0019] Reference numerals: 1. Binding impact part; 11. Slag discharge trough; 12. Slag blowing channel; 2. Ring drill bit; 21. Wear-resistant tooth; 3. Protective pipe; 41. Limiting groove; 42. Limiting boss; 43. First limiting step; 44. Second limiting step; 5. Drill rod; 61. Connecting rod; 62. First fixing hole; 63. Internal hexagonal hole; 64. Second fixing hole. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0022] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0023] like Figures 1 to 6As shown, this utility model provides a binding impactor, including: a binding impact part 1, with slag discharge grooves 11 spaced apart on the outer surface of the binding impact part 1; a sleeve assembly, fitted onto the outer side of the binding impact part 1, with a slag discharge channel formed between the inner wall of the sleeve assembly and the slag discharge grooves 11; and an axial locking structure, disposed between the sleeve assembly and the binding impact part 1, so that the binding impact part 1 and the sleeve assembly have a locked state and an unlocked state. When the binding impact part 1 and the sleeve assembly are in the locked state, the binding impact part 1 drives the sleeve assembly to rotate axially and move along the axial direction. When the binding impact part 1 and the sleeve assembly are in the unlocked state, the axial limit of the binding impact part 1 is released, and the sleeve assembly and the binding impact part 1 rotate relative to each other to switch between the locked state and the unlocked state.

[0024] Existing binding impactors, when applied to areas with complex rock conditions, especially when encountering loose, broken, poorly cemented, or fractured rock formations, exhibit problems such as difficulty in removing rock debris, a significantly increased risk of stuck drill bits, and borehole wall instability and collapse, severely restricting construction efficiency and borehole quality.

[0025] The binding impactor provided by this utility model, firstly, is equipped with a binding impact part 1 and a casing assembly, wherein the casing assembly is fitted on the outside of the binding impact part 1, and the outer surface of the binding impact part 1 is provided with slag discharge grooves 11 at intervals. The inner wall of the casing assembly and the slag discharge grooves 11 form a slag discharge channel. During the drilling process, the casing assembly supports the hole wall to prevent the wall collapse. Rock cuttings can be discharged from the hole through the slag discharge channel. In this way, the problems of rock cuttings not being discharged in time, drill bit jamming, and hole wall collapse are avoided. Secondly, an axial locking structure is also provided, which is located between the casing assembly and the binding impact part 1. This allows the binding impact part 1 and the casing assembly to have locked and unlocked states. When the binding impact part 1 and the casing assembly are in the locked state, the binding impact part 1 can drive the casing assembly to rotate axially and move along the axial direction, so that the casing assembly can drill along with the borehole. When the binding impact part 1 and the casing assembly are in the unlocked state, the axial limit of the binding impact part 1 is released, so that the binding impact part 1 can be withdrawn from the casing assembly. There is relative rotation between the casing assembly and the binding impact part 1 to switch between the locked and unlocked states. In summary, compared with the prior art, the binding impactor provided by this utility model embodiment can effectively deal with complex rock formations, especially achieving efficient slag removal, wall protection and collapse prevention, and stable drilling when drilling in loose rock formations.

[0026] Compared with the existing technology, this technical solution sets a casing assembly on the outside of the existing binding impactor. When the binding impactor is drilling, the casing assembly rotates along the axial feed of the binding impact part 1. The casing assembly supports the borehole wall and prevents the wall collapse. Rock cuttings can be discharged from the cuttings discharge channel, making cuttings discharge more efficient and the drilling process more stable. After drilling is completed, the binding impact part 1 is rotated to unlock the binding impact part 1 and the casing assembly, which facilitates the separation of the binding impact part 1 and the casing assembly and makes disassembly and assembly easier. Depending on the geological conditions, it is possible to choose whether to use only the binding impact part 1 for drilling or to use a combination of the binding impact part 1 and the casing assembly for drilling.

[0027] Furthermore, as one embodiment, the casing assembly in this utility model includes a ring drill bit 2 and a protective sleeve 3. The front end of the ring drill bit 2 is provided with wear-resistant teeth 21 at intervals, and an axial snap-fit ​​structure is provided between the ring drill bit 2 and the binding impact part 1. During drilling, rock cuttings can easily cause wear to the front end of the ring drill bit 2. By providing wear-resistant teeth 21 at intervals on the front end of the ring drill bit 2, the service life of the ring drill bit 2 is extended. The protective sleeve 3 is provided at the rear end of the ring drill bit 2, and the protective sleeve 3 is detachably connected to the rear end of the ring drill bit 2. If the ring drill bit 2 is severely worn, it is easy to replace the ring drill bit 2.

[0028] Furthermore, as a specific implementation, the annular drill bit 2 and the protective tube 3 in this embodiment of the present invention are specifically connected by a threaded detachable connection.

[0029] Furthermore, as one specific implementation, the axial locking structure in this embodiment of the present invention includes a limiting groove 41 and a limiting boss 42. The limiting groove 41 is disposed on the outer surface of the binding impact part 1, and the opening of the limiting groove 41 is connected to the slag discharge groove 11. The limiting boss 42 is disposed on the inner surface of the annular drill bit 2. The limiting boss 42 can move along the slag discharge groove 11 and be locked by rotating into the limiting groove 41. Specifically, when the casing assembly needs to be installed, the limiting boss 42 and the slag discharge groove 11 are located on the same axis. When the limiting boss 42 moves along the limiting groove 41 to be opposite to the opening of the limiting groove 41, the binding impact part 1 is rotated around the first direction to rotate the limiting boss 42 into the limiting groove 41 for locking. The binding impact part 1 continues to rotate around the first direction while moving along the axial direction, thereby driving the casing assembly to drill synchronously. When drilling is complete and the casing assembly needs to be separated from the binding impact part 1, the binding impact part 1 is rotated in the opposite direction so that the limiting boss 42 is rotated out of the limiting groove 41. Subsequently, the limiting boss 42 moves along the axis of the slag discharge groove 11, thereby separating the casing assembly from the binding impact part 1.

[0030] More specifically, in order to make the engagement of the binding impactor and the sleeve assembly more stable, at least two limiting bosses 42 are provided, and the limiting grooves 41 and the limiting bosses 42 are provided in a one-to-one correspondence.

[0031] In the above structure, for easier operation, as one embodiment, the axial locking structure of this utility model further includes a first limiting step 43 and a second limiting step 44. The first limiting step 43 is disposed on the outer surface of the front end of the binding impact part 1, and the second limiting step 44 is disposed on the inner wall of the annular drill bit 2. The first limiting step 43 and the second limiting step 44 abut against each other to axially limit the binding impact part 1. At this time, the limiting groove 41 and the limiting boss 42 can be locked together by relative rotation.

[0032] Furthermore, when drilling deeper holes, at least two protective tubes 3 are provided to facilitate support and protection of the hole wall. The protective tubes 3 are connected sequentially along the direction of the binding impact part 1, and adjacent protective tubes 3 are fixedly connected by threads. The number of protective tubes 3 can be selected according to the drilling depth requirements to meet the construction needs.

[0033] In the above structure, as one embodiment, the binding impact part 1 of this utility model is provided with a high-pressure air passage, and the front end face of the binding impact part 1 is provided with a slag blowing channel 12. The slag blowing channel 12 is used to connect the high-pressure air passage and the slag discharge trough 11. After the waste gas in the high-pressure air passage is discharged, the rock slag is blown into the slag discharge trough 11 through the slag blowing channel 12 and discharged, so the slag blowing and slag discharge efficiency is higher.

[0034] Furthermore, as one embodiment, the binding impactor in this utility model embodiment also includes a drill rod 5, which has an air supply channel for communicating with a high-pressure air channel. A connecting component is disposed between the drill rod 5 and the binding impact part 1 so that the drill rod 5 and the binding impact part 1 can be detachably connected.

[0035] To meet construction needs, at least two drill rods 5 are provided, and the drill rods 5 are arranged sequentially along the axial direction of the binding impact part 1. Adjacent drill rods 5 are detachably connected by a connecting assembly, and the space between the drill rod 5 and the casing 3 is used for the discharge of rock cuttings.

[0036] Furthermore, as one specific embodiment, the connecting component in this utility model includes a connecting rod 61, which is disposed at the rear end of the binding impact part 1. The connecting rod 61 is specifically an external hexagonal structure. The drill rod 5 is provided with an internal hexagonal hole 63 that cooperates with the external hexagonal structure. The drill rod 5 is provided with a second fixing hole 64. The first fixing hole 62 and the second fixing hole 64 form a mounting hole for installing the connector, so that the connecting rod 61 is fixed to the drill rod 5.

[0037] Furthermore, as one embodiment, at least two first fixing holes 62 are provided in this utility model embodiment, and the first fixing holes 62 are staggered along the axial and radial sides of the connecting rod 61.

[0038] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A binding impactor, characterized in that, include: The binding impact part (1) has a slag discharge groove (11) on its outer surface. The sleeve assembly is fitted on the outside of the binding impact part (1), and the inner wall of the sleeve assembly forms a slag discharge channel with the slag discharge groove. An axial snap-fit ​​structure is provided between the sleeve assembly and the binding impact part (1) so that the binding impact part (1) and the sleeve assembly have a locked state and an unlocked state. When the binding impact part (1) and the sleeve assembly are in the locked state, the binding impact part (1) drives the sleeve assembly to rotate axially and move along the axial direction. When the binding impact part (1) and the sleeve assembly are in the unlocked state, the axial limit of the binding impact part is released, and the sleeve assembly and the binding impact part rotate relative to each other to switch the locked state and the unlocked state.

2. The binding impactor according to claim 1, characterized in that, The sleeve assembly includes: The annular drill bit (2) has wear-resistant teeth (21) spaced at the front end, and the axial snap-fit ​​structure is disposed between the binding impact part (1) and the annular drill bit (2). The protective tube (3) is detachably connected to the rear end of the annular drill bit (2).

3. The binding impactor according to claim 2, characterized in that, The protective tube (3) is connected to the annular drill bit (2) by a thread.

4. The binding impactor according to claim 2, characterized in that, The axial snap-fit ​​structure includes: A limiting groove (41) is provided on the outer surface of the binding impact part (1), and the opening of the limiting groove (41) is connected to the slag discharge groove (11). A limiting boss (42) is provided on the inner surface of the annular drill bit (2). The limiting boss (42) is configured to be able to move along the slag discharge groove (11) and to be locked in the limiting groove (41) by rotating and sliding. At least two limiting bosses (42) are provided, and the limiting grooves (41) are provided in a one-to-one correspondence with the limiting bosses (42).

5. The binding impactor according to claim 4, characterized in that, The axial snap-fit ​​structure further includes: The first limiting step (43) is provided at the front end of the binding impact part (1); The second limiting step (44) is provided on the inner wall of the annular drill bit (2). The first limiting step (43) abuts against the second limiting step (44) to limit the axial movement of the binding impact part (1) so that the limiting groove (41) and the limiting boss (42) are engaged by relative rotation.

6. The binding impactor according to claim 2, characterized in that, At least two protective tubes (3) are provided, and the protective tubes (3) are connected sequentially along the direction of the binding impact part, and adjacent protective tubes (3) are fixedly connected by threads.

7. The binding impactor according to any one of claims 1 to 6, characterized in that, The binding impact part (1) is provided with a high-pressure air passage, and the front end face of the binding impact part (1) is provided with a slag blowing channel (12). The slag blowing channel (12) connects the high-pressure air passage and the slag discharge trough (11) to blow slag.

8. The binding impactor according to claim 7, characterized in that, Also includes: Drill rod (5), the drill rod (5) is provided with an air supply channel for communicating with the high-pressure air passage; A connecting assembly is disposed between the drill rod (5) and the binding impact part (1) so that the drill rod (5) and the binding impact part (1) are detachably connected.

9. The binding impactor according to claim 8, characterized in that, At least two drill rods (5) are provided and are connected sequentially along the axial direction of the binding impact part (1), and adjacent drill rods (5) are connected by a connecting assembly.

10. The binding impactor according to claim 8, characterized in that, The connection component includes: A connecting rod (61) is provided at the rear end of the binding impact part (1). The connecting rod (61) is specifically an external hexagonal structure and a first fixing hole (62) is provided on the connecting rod (61). The drill rod (5) is provided with an inner hexagonal hole (63) that is used in conjunction with the outer hexagonal structure. The drill rod (5) is provided with a second fixing hole (64). The first fixing hole (62) and the second fixing hole (64) form an installation hole. The installation hole is used to install a connector so that the connecting rod (61) is fixed to the drill rod (5).

Images