Damping structure and drilling equipment

Abstract

The damping structure comprises a first connector, the first connector comprises a first connecting part and a first flange, and the second connector comprises a second connecting part and a second flange; the second connector is arranged at the front end of the first flange and comprises a second connecting part and a second flange, and the second connecting part is arranged at the front end of the second flange; the anti-loosening piece is sleeved on the outer side of the second connecting part; a first buffering piece is arranged between the first flange and the second flange, and a second buffering piece is arranged between the second flange and the anti-loosening piece. The locking assembly is used for fixing the first connector, the second connector and the anti-loosening piece. Compared with the prior art, the damping structure and the drilling equipment are simple in structure, good in damping effect and capable of reducing damage of the impact effect to the power head.

Description

Technical Field

[0001] The present application relates to the technical field of drilling equipment, and more specifically, to a shock absorbing structure and a drilling equipment. Background Art

[0002] The equipment for down-the-hole rock drilling is called a down-the-hole drill. During the operation of the down-the-hole drill, the power head drives the down-the-hole impactor through the drill rod to produce continuous dynamic impacts on the rock at the bottom of the hole. A piston is arranged in the down-the-hole impactor. Due to the pressure difference at both ends of the piston, the piston is pushed to move back and forth along its axial direction, thereby providing a pulse force for the drill bit to break the rock. The down-the-hole impactor will generate high-frequency vibration during operation.

[0003] This impact causes the power head to be subjected to a reaction force, which will produce a large vibration, thus easily causing damage to the power head. Frequent repairs and replacements of the power head are required, which reduces the production efficiency of the equipment and increases the cost.

[0004] Therefore, there is an urgent need for a shock-absorbing structure and drilling equipment, which have a simple structure, good shock-absorbing effect, and can reduce the damage to the power head caused by impact. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a shock absorbing structure and a drilling device, which have a simple structure and a good shock absorbing effect and can reduce the damage to the power head caused by the impact.

[0006] The technical solutions provided by this application are as follows:

[0007] A shock absorbing structure, comprising:

[0008] a first joint, the first joint comprising a first connecting portion and a first flange;

[0009] a second joint disposed at a front end of the first flange, the second joint comprising a second connecting portion and a second flange, the second connecting portion being disposed at a front end of the second flange;

[0010] A locking member sleeved on the outer side of the second connecting portion;

[0011] A first buffer is provided between the first flange and the second flange, and a second buffer is provided between the second flange and the anti-loosening member;

[0012] A locking assembly for fixing the first joint, the second joint and the anti-loosening member, wherein at least two groups of the locking assembly are provided and the locking assembly is arranged at intervals in the circumferential direction around the second flange.

[0013] Preferably, the locking assembly comprises:

[0014] A mounting hole extending through the first flange, the second flange and the anti-loosening member;

[0015] A locking bolt is sleeved in the mounting hole, and a positioning end cover is provided at one end of the locking bolt;

[0016] A locking nut is arranged at an end of the locking bolt away from the positioning end cover.

[0017] Preferably, it also includes:

[0018] a first gasket disposed between the first buffer member and the first flange;

[0019] a second gasket disposed between the first buffer member and the second flange;

[0020] A third gasket is disposed between the second buffer member and the second flange.

[0021] Preferably, it also includes:

[0022] A central air passage is provided through the first joint, the second joint and the anti-loosening member.

[0023] Preferably, the first connecting portion is specifically a tapered external threaded shaft, and the cross-sectional size of the first connecting portion gradually increases in a direction approaching the second joint.

[0024] Preferably, the second connecting portion is specifically a tapered internal threaded hole, and the diameter of the tapered internal threaded hole gradually increases in a direction away from the second flange.

[0025] Preferably, the first buffer member is any one of a butterfly spring sheet group, a spring or a rubber pad;

[0026] The second buffer is any one of a butterfly spring sheet set, a spring or a rubber pad.

[0027] Preferably, the first buffer member is a spring, and a guide member for limiting and constraining the deformation direction of the spring is provided between the first flange and the second flange.

[0028] A drilling device comprises any of the shock absorbing structures described above.

[0029] Preferably, it also includes:

[0030] Power head;

[0031] A drill rod connected to the output end of the power head;

[0032] an impactor connected to the drill rod;

[0033] The shock absorbing structure is arranged between the power head and the drill rod; or,

[0034] At least two drill rods are provided, and the shock absorbing structure is provided between adjacent drill rods;

[0035] The shock absorbing structure is arranged between the drill rod and the impactor.

[0036] The shock absorbing structure provided by the utility model is provided with a first joint, a second joint, a loose-proof member, a first buffer member and a second buffer member, wherein the first joint includes a first connection part and a first flange, the second joint is arranged at the front end of the first flange, the second joint includes a second connection part and a second flange, the second connection part is arranged at the front end of the second flange, the first connection part and the second connection part are used to install the shock absorbing structure in the drilling equipment, the loose-proof member is arranged to be sleeved on the outside of the second connection part, the first buffer member is arranged between the first flange and the second flange, and the second buffer member is arranged between the second flange and the loose-proof member. During the drilling process of the drilling equipment, the power head exerts a downward force on the impact drill bit along the axis, and the rock exerts an upward reaction force on the drill bit along the axis. Since the first buffer member and the second buffer member are provided, the force and reaction force in the axis direction can be used to buffer the damage to the power head caused by the impact, and the shock absorbing effect is better. Secondly, a locking assembly is also provided, and the locking assembly is used to fix the first joint, the second joint and the loose-proof member, and the locking assembly is provided with at least two groups, and the locking assembly is arranged at intervals around the circumference of the second flange. It can be seen that compared with the prior art, the shock absorbing structure in the embodiment of the utility model has a simple structure, can reduce the damage to the power head caused by the impact during the drilling process, and has a better shock absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the first structure of the shock absorbing structure provided by the embodiment of the utility model;

[0039] Figure 2 A second structural schematic diagram of the shock absorbing structure provided by an embodiment of the utility model;

[0040] Figure 3 A schematic diagram of the structure of a butterfly spring provided in an embodiment of the utility model;

[0041] Figure 4 A third structural schematic diagram of the shock absorbing structure provided in an embodiment of the utility model.

[0042] Figure numerals: 11, first connecting part; 12, first flange; 21, second connecting part; 22, second flange; 3, anti-loosening part; 4, first buffer part; 5, second buffer part; 6, locking assembly; 71, first gasket; 72, second gasket; 73, third gasket; 8, central airway; 9, guide part. DETAILED DESCRIPTION

[0043] In order 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 part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0047] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0048] The embodiments of the present invention are written in a progressive manner.

[0049] like Figures 1 to 4 As shown, an embodiment of the utility model provides a shock-absorbing structure, including: a first joint, the first joint including a first connecting portion 11 and a first flange 12; a second joint arranged at the front end of the first flange 12, the second joint including a second connecting portion 21 and a second flange 22, the second connecting portion 21 being arranged at the front end of the second flange 22; an anti-loosening member 3 sleeved on the outer side of the second connecting portion 21; a first buffer member 4 is arranged between the first flange 12 and the second flange 22, and a second buffer member 5 is arranged between the second flange 22 and the anti-loosening member 3; a locking assembly 6 for fixing the first joint, the second joint and the anti-loosening member 3, the locking assembly 6 being provided with at least two groups, and the locking assembly 6 is arranged at circumferential intervals around the second flange 22.

[0050] In the prior art, the piston provides a pulse impact effect to the drill bit, which greatly improves the drilling efficiency. However, the impact effect of the piston causes the power head to be subjected to a reaction force, which will produce a large vibration, thus easily causing damage to the power head. The power head needs to be frequently repaired and replaced, which reduces the production efficiency of the equipment and increases the cost.

[0051] In order to solve the above technical problems, the shock absorbing structure provided by the utility model is provided with a first joint, a second joint, a loosening prevention member 3, a first buffer member 4 and a second buffer member 5, wherein the first joint includes a first connection portion 11 and a first flange 12, the second joint is arranged at the front end of the first flange 12, the second joint includes a second connection portion 21 and a second flange 22, the second connection portion 21 is arranged at the front end of the second flange 22, the first connection portion 11 and the second connection portion 21 are used to install the shock absorbing structure in the drilling equipment, the loosening prevention member 3 is arranged to be sleeved on the outside of the second connection portion 21, the first buffer member 4 is arranged between the first flange 12 and the second flange 22, and the second buffer member 5 is arranged between the second flange 22 and the loosening prevention member 3. During the drilling process of the drilling equipment, the power head exerts a downward force on the impact drill bit along the axis, and the rock exerts a reaction force on the drill bit upward along the axis. Since the first buffer member 4 and the second buffer member 5 are provided, the force and reaction force in the axial direction can be buffered, the damage to the power head by the impact is reduced, and the shock absorbing effect is better. Secondly, a locking assembly 6 is also provided, and the locking assembly 6 is used to fix the first joint, the second joint and the anti-loosening member 3. At least two sets of locking assemblies 6 are provided, and the locking assemblies 6 are arranged at intervals around the circumference of the second flange 22. It can be seen that compared with the prior art, the shock absorbing structure in the embodiment of the utility model has a simple structure, can reduce the damage to the power head caused by the impact during the drilling process, and has a better shock absorbing effect.

[0052] In the above structure, as one specific implementation, the locking components 6 in the embodiment of the utility model are provided with at least two groups, and preferably, the locking components 6 are provided with four groups or six groups.

[0053] Furthermore, as one of the specific implementations, the locking assembly 6 in the embodiment of the utility model includes a mounting hole, a locking bolt and a locking nut, wherein the mounting hole is set through the first flange 12, the second flange 22 and the anti-loosening member 3, the mounting hole extends along the axial direction of the first joint, the locking bolt is sleeved in the mounting hole, one end of the locking bolt is provided with a positioning end cap, and the end of the locking bolt away from the positioning end cap is fixed by a locking nut. The positioning end cap abuts against the front end face of the second flange 22, and the locking nut is rotated so that the locking nut abuts against the rear end face of the first flange 12 for locking.

[0054] In the above structure, as one of the implementation modes, the shock absorbing structure in the embodiment of the utility model includes a first gasket 71, a second gasket 72 and a third gasket 73, wherein the first gasket 71 is arranged between the first buffer 4 and the first flange 12, the second gasket 72 is arranged between the first buffer 4 and the second flange 22, and the third gasket 73 is arranged between the second buffer 5 and the second flange 22. The two sides of the first buffer 4 are respectively connected to the first gasket 71 and the second gasket 72, and the two sides of the second buffer 5 are respectively connected to the anti-loosening member 3 with the third gasket 73. Due to the provision of the first gasket 71, the second gasket 72 and the third gasket 73, the wear of the first buffer 4 and the second buffer 5 on the first joint and the second joint is avoided, and when the first gasket 71, the second gasket 72 and the third gasket 73 are worn, the disassembly and replacement are more convenient.

[0055] In the above structure, as one of the implementation modes, the shock absorbing structure in the embodiment of the utility model further includes a central air channel 8, which is arranged through the first joint, the second joint and the anti-loosening member 3. The central air channel 8 is used to supply high-pressure gas flow, and the high-pressure gas enters the inside of the impactor, forming a pressure difference at both ends of the piston, thereby driving the piston to reciprocate along the axial direction, thereby providing a pulse impact force to the drill bit and improving the drilling efficiency.

[0056] Furthermore, the central air channel 8 is disposed through the first buffer component 4 , the second buffer component 5 , the first gasket 71 , the second gasket 72 and the third gasket 73 .

[0057] Furthermore, as one implementation mode, the first connection portion 11 in the embodiment of the utility model is specifically a tapered external thread, and the cross-sectional size of the first connection portion 11 gradually increases toward the direction approaching the second joint.

[0058] The second connection portion 21 in the embodiment of the utility model is specifically a tapered internal threaded hole, and the diameter of the tapered internal threaded hole gradually increases in a direction away from the second flange 22 .

[0059] The first connection part 11 is directly or indirectly connected to the power head, and the second connection part 21 is directly or indirectly connected to the impactor, and the shock absorbing structure is installed to buffer the impact on the power head during the drilling process.

[0060] Furthermore, as one of the implementation modes, the first buffer member 4 in the embodiment of the utility model is any one of a butterfly spring sheet group, a spring or a rubber pad; the second buffer member 5 is any one of a butterfly spring sheet group, a spring or a rubber pad. Preferably, the first buffer member 4 and the second buffer member 5 in the embodiment of the utility model are preferably butterfly spring sheet groups. The buffering stroke of the rubber pad and the butterfly spring sheet group is small, but the rubber pad is made of a flexible material and is prone to failure and needs to be replaced, while the butterfly spring sheet group is specifically made of a rigid material, which is not prone to failure and has a longer service life.

[0061] Furthermore, the butterfly spring sheet group includes at least two butterfly spring sheets, which are connected in series along the axis direction. The structure of the butterfly spring sheets is as follows: Figure 3 shown.

[0062] Furthermore, if the first buffer member 4, but the buffer stroke of the spring is longer, in order to prevent the spring from deflecting during the process of deformation and resetting the deformation, further, a guide member 9 is provided between the first flange 12 and the second flange 22, and the guide member 9 is used to limit and constrain the direction in which the spring produces deformation.

[0063] Furthermore, the guide member 9 is connected to the first gasket 71, and the guide member 9 extends in the direction of the second gasket 72, and there is a moving stroke between the extended end of the guide member 9 and the second gasket 72; or, the guide member 9 can also be arranged on the second gasket 72, and the guide member 9 extends in the direction of the first gasket 71, and similarly, there is a moving stroke between the guide member 9 and the first gasket 71.

[0064] In the above structure, as one of the implementation modes, the guide member 9 in the embodiment of the utility model is specifically an annular guide groove, and the spring is sleeved in the annular guide groove, and the inner wall and outer wall of the annular guide groove are used to limit and constrain the direction of deformation of the spring.

[0065] More specifically, when the stroke of the second buffer member 5 is smaller than that of the first buffer member 4 , the guide member 9 is provided or not provided between the second flange 22 and the anti-loosening gasket according to the use requirements.

[0066] Furthermore, the utility model also provides a drilling device, including the above-mentioned shock-absorbing structure, which can also achieve a simple structure, reduce the damage to the power head caused by the impact during the drilling process, and achieve a better shock-absorbing effect.

[0067] Furthermore, as one of the implementation modes, the drilling equipment in the embodiment of the utility model further includes a power head, a drill rod connected to the output end of the power head, and an impactor connected to the drill rod, wherein the shock absorbing structure is arranged between the power head and the drill rod; or, the shock absorbing structure is arranged between the drill rod and the impactor; or, at least two drill rods are arranged, and the shock absorbing structure is arranged between adjacent drill rods. According to the needs of use, at least two shock absorbing structures can also be arranged, and the shock absorbing effect is better.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shock absorbing structure, characterized in that: include: A first joint, the first joint comprising a first connecting portion (11) and a first flange (12); a second joint arranged at the front end of the first flange (12), the second joint comprising a second connecting portion (21) and a second flange (22), the second connecting portion (21) being arranged at the front end of the second flange (22); A locking member (3) sleeved on the outer side of the second connecting portion (21); A first buffer member (4) is provided between the first flange (12) and the second flange (22), and a second buffer member (5) is provided between the second flange (22) and the anti-loosening member (3); A locking assembly (6) for fixing the first joint, the second joint and the anti-loosening member (3), wherein at least two groups of the locking assemblies (6) are provided, and the locking assemblies (6) are arranged at intervals in the circumferential direction around the second flange (22).

2. The shock absorbing structure according to claim 1, characterized in that: The locking assembly (6) comprises: A mounting hole extending through the first flange (12), the second flange (22) and the anti-loosening member (3); A locking bolt is sleeved in the mounting hole, and a positioning end cover is provided at one end of the locking bolt; A locking nut is arranged at an end of the locking bolt away from the positioning end cover.

3. The shock absorbing structure according to claim 1, characterized in that: Also includes: a first gasket (71) disposed between the first buffer member (4) and the first flange (12); a second gasket (72) disposed between the first buffer member (4) and the second flange (22); A third gasket (73) is arranged between the second buffer member (5) and the second flange (22).

4. The shock absorbing structure according to any one of claims 1 to 3, characterized in that: Also includes: A central air passage (8) is provided through the first joint, the second joint and the anti-loosening component.

5. The shock absorbing structure according to claim 4, characterized in that: The first connection portion (11) is specifically a tapered external threaded shaft, and the cross-sectional size of the first connection portion (11) gradually increases in a direction approaching the second joint.

6. The shock absorbing structure according to claim 5, characterized in that: The second connection portion (21) is specifically a tapered internal threaded hole, and the diameter of the tapered internal threaded hole gradually increases in a direction away from the second flange (22).

7. The shock absorbing structure according to any one of claims 1 to 3 and 5 to 6, characterized in that: The first buffer member (4) is any one of a butterfly spring sheet group, a spring or a rubber pad; The second buffer (5) is any one of a butterfly spring sheet group, a spring or a rubber pad.

8. The shock absorbing structure according to any one of claims 1 to 3 and 5 to 6, characterized in that: The first buffer member (4) is specifically a spring, and a guide member (9) for limiting and restraining the deformation direction of the spring is provided between the first flange (12) and the second flange (22).

9. A drilling device, characterized in that: The invention comprises the shock absorbing structure according to any one of claims 1 to 8.

10. The drilling device according to claim 9, characterized in that Also includes: Power head; A drill rod connected to the output end of the power head; an impactor connected to the drill rod; The shock absorbing structure is arranged between the power head and the drill rod; or, At least two drill rods are provided, and the shock absorbing structure is provided between adjacent drill rods; The shock absorbing structure is arranged between the drill rod and the impactor.

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