Air hammer resistance transmission clutch device, clutch, guided air hammer and application

Abstract

The present invention provides an air hammer resistance transmission clutch device, a clutch, a guided air hammer and an application, wherein the air hammer resistance transmission clutch device includes a housing, an upper joint, a clutch, a gas distribution seat and a rotating rod, the upper end of the upper joint is inserted into the lower end of the housing and fixedly connected; the gas distribution seat is inserted into the housing, and the upper end of the gas distribution seat abuts against the lower end of the upper joint; the lower end of the clutch is inserted into the inner cavity of the gas distribution seat, and a gap is formed between the outer wall of the lower end of the clutch and the inner wall of the gas distribution seat, a connecting portion is connected to the clutch, and the clutch is fixedly connected to the upper joint through the connecting portion; the upper end of the rotating rod is inserted into the clutch, and the rotating rod can rotate around its axis and transmit the rotational resistance to the upper joint through the clutch. The clutch of the present invention can be directly connected to the upper joint through the connecting portion, so that the resistance generated by the rotation of the rotating rod avoids the gas distribution seat and directly acts on the upper joint, thereby preventing the gas distribution seat from being damaged under the long-term action of the resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of air hammers for drilling and mining, and in particular to an air hammer resistance transmission clutch device, a clutch, a guided air hammer and applications. Background Art

[0002] An air hammer for mining refers to a device that compresses air and then drives the drill bit to move back and forth to advance mining. At the same time, the drill bit will rotate due to the influence of the rotating rod when performing the reciprocating motion, and the rotating rod will rotate unidirectionally through the ratchet in the clutch, so that the drill bit will not be unable to rotate due to the rotation of the rotating rod when it is pushed out. However, because the existing clutches are all set to fit the valve seat, the clutch is connected through the valve seat, which can easily transfer the resistance generated by the rotation of the drill bit to the valve seat, which can easily cause the valve seat to be damaged and affect the flow of air. Summary of the Invention

[0003] The present invention aims to address at least one of the aforementioned deficiencies in the prior art. For example, one of the objectives of the present invention is to provide an air hammer resistance transmission clutch device, a clutch, a guided air hammer, and their applications, which address the technical problem that during the reciprocating rotation of the air hammer drill bit, the rotational force directly acts on the gas distribution seat through the clutch, causing the gas distribution seat to be easily damaged.

[0004] In order to achieve the above-mentioned purpose, the present invention provides an air hammer resistance transmission clutch device on the one hand, wherein the clutch device includes an outer shell, an upper joint, a clutch, a valve seat and a rotating rod, wherein the upper end of the upper joint is passed through the lower end of the outer shell and fixedly connected; the valve seat is passed through the outer shell, and the upper end of the valve seat abuts against the lower end of the upper joint; the lower end of the clutch is passed through the inner cavity of the valve seat, and a gap is formed between the outer wall of the lower end of the clutch and the inner wall of the valve seat, and a connecting part is connected to the clutch, and the clutch is fixedly connected to the upper joint through the connecting part; the upper end of the rotating rod is passed through the clutch, and the rotating rod can rotate around its axis and transmit the rotational resistance to the upper joint through the clutch.

[0005] Optionally, the connecting portion is provided with a plurality of first air holes, one opening of the first air hole is formed at the end of the upper end of the connecting portion, and the other opening is formed on the outer wall of the body of the connecting portion; the side wall of the gas distribution seat is provided with a plurality of second air holes, one opening of the second air hole is formed at the end of the upper end of the gas distribution seat and is connected with the gap, and the other opening is formed on the outer wall of the body of the gas distribution seat; an air guide space is formed between the outer wall of the clutch, the inner wall of the upper joint and the upper end of the gas distribution seat, the first air hole, the air guide space and the second air hole can be connected to each other, and the air flow can flow from the top of the clutch along the first air hole, the air guide space and the second air hole to the outside of the gas distribution seat.

[0006] Optionally, a rotating shaft may be passed through the first air hole, and a plurality of arc blocks are provided on the inner wall of the rotating shaft. The arc blocks can drive the rotating shaft to rotate circumferentially under the action of the airflow, so that the airflow in the rotating shaft flows in a spiral manner.

[0007] Optionally, a plurality of first annular grooves may be provided side by side along the axial direction on the inner wall of the first air hole, and a plurality of second annular grooves may be provided side by side along the axial direction on the outer wall of the rotating shaft, the first annular grooves and the second annular grooves corresponding to each other one by one, and a plurality of balls are provided in each pair of corresponding first annular grooves and second annular grooves along the circumference of the first air hole, and the balls are respectively in contact with the bottom of the first annular groove and the second annular groove, and the rotating shaft can drive the balls to roll in the first annular groove and the second annular groove while rotating circumferentially.

[0008] Optionally, the angle between the arc block and the axis of the rotating shaft may be a non-vertical angle.

[0009] Optionally, the air hammer may further include an air flow valve, which is axially installed between the upper joint and the clutch, with the upper end of the air flow valve abutting against the step of the inner wall of the upper joint and capable of moving axially downward under the action of the air flow to separate from the step of the inner wall of the upper joint, so as to control the opening and closing of the gas channel of the upper joint.

[0010] Optionally, a plurality of rivets may be provided through the side walls of the connecting portion and the upper joint, and the rivets may be used to fixedly connect the clutch and the upper joint.

[0011] On the other hand, the present invention provides an air hammer resistance transmission clutch, wherein a connecting portion is formed at the upper end of the clutch, and the connecting portion causes the outer wall of the upper end of the clutch to protrude radially outward, and the connecting portion is provided with a plurality of first air holes, one opening of the first air hole is formed at the end portion of the upper end of the connecting portion, and the other opening is formed on the outer wall of the body of the connecting portion; a rotating shaft is passed through the first air hole, and a plurality of arc blocks are provided on the inner wall of the rotating shaft, and the arc blocks can drive the rotating shaft to rotate circumferentially under the action of the airflow, so that the airflow in the rotating shaft flows in a spiral direction.

[0012] Optionally, a plurality of first annular grooves may be provided side by side along the axial direction on the inner wall of the first air hole, and a plurality of second annular grooves may be provided side by side along the axial direction on the outer wall of the rotating shaft, the first annular grooves and the second annular grooves corresponding to each other one by one, and a plurality of balls are provided in each pair of corresponding first annular grooves and second annular grooves along the circumference of the first air hole, and the balls are respectively in contact with the bottom of the first annular groove and the second annular groove, and the rotating shaft can drive the balls to roll in the first annular groove and the second annular groove while rotating circumferentially.

[0013] In another aspect, the present invention provides a guided air hammer, which includes the resistance transmission clutch device as described above, or includes the resistance transmission clutch as described above.

[0014] Another aspect of the present invention provides an application of a guided air hammer in drilling operations.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By providing a connecting portion on the clutch of the device, the clutch can be directly connected to the upper joint, so that the resistance generated by the rotation of the rotating rod will not be transmitted to the valve seat, but will directly act on the upper joint, thereby avoiding damage to the valve seat under the influence of long-term resistance. The clutch can also replace the bottom cover of the valve seat for sealing, making the installation of the clutch and the valve seat more convenient.

[0017] 2. A rotating shaft is also provided in the clutch of the device. When the airflow circulates through the air guide groove on the connecting block, the rotating shaft will rotate due to the flow impact of the airflow. Then, due to the rotation of the rotating shaft and the influence of the inner wall arc block, the airflow will flow in a spiral, making the airflow flow faster, and will not accumulate in the upper joint and affect the airflow valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects and / or features of the present invention will become more apparent from the following description in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A structural schematic diagram of the first part of an air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention is shown.

[0020] Figure 2 A structural schematic diagram of the second portion of the air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention is shown.

[0021] Figure 3 A schematic diagram showing a valve seat and a clutch in an air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention is shown.

[0022] Figure 4 Shown Figure 2 Enlarged exploded view of point A in the middle.

[0023] Figure 5 A schematic diagram showing a connecting portion and a rotating shaft in an air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1-housing, 2-upper joint, 3-clutch, 31-connecting part, 311-first air hole, 3111-first ring groove, 3112-arc block, 32-rotating shaft, 321-second ring groove, 33-ball, 4-gas distribution seat, 41-second air hole, 5-air flow valve, 6-rotating rod. DETAILED DESCRIPTION

[0026] Hereinafter, an air hammer resistance transmission clutch device, a clutch, a guided air hammer and applications of the present invention will be described in detail with reference to exemplary embodiments.

[0027] In the description of this application, it should be understood that the terms "center", "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 accompanying drawings, and are only for the convenience of describing this 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 cannot be understood as a limitation on this application.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0030] In the related art, the clutch in the drilling air hammer is set in contact with the gas distribution seat, and the clutch is connected through the gas distribution seat. This can easily transfer the resistance generated by the rotation of the drill bit directly to the gas distribution seat, which can easily cause the gas distribution seat to be damaged and affect the flow of airflow.

[0031] Based on this, the present invention provides an air hammer resistance transmission clutch device, a clutch, a guided air hammer and an application, wherein the air hammer resistance transmission clutch device includes an outer shell, an upper joint, a clutch, a valve seat and a rotating rod, the upper end of the upper joint is passed through the lower end of the outer shell and fixedly connected; the valve seat is passed through the outer shell, and the upper end of the valve seat abuts against the lower end of the upper joint; the lower end of the clutch is passed through the inner cavity of the valve seat, and a gap is formed between the outer wall of the lower end of the clutch and the inner wall of the valve seat, a connecting part is connected to the clutch, and the clutch is fixedly connected to the upper joint through the connecting part; the upper end of the rotating rod is passed through the clutch, and the rotating rod can rotate around its axis while transmitting the rotational resistance to the upper joint through the clutch.

[0032] The present invention enables the clutch to be directly connected to the upper joint by means of a connecting block provided in the device, so that the resistance generated by the rotation of the rotating rod will not be transmitted to the valve seat, but will directly act on the upper joint, thereby preventing the valve seat from being damaged under the influence of long-term resistance. The clutch can also replace the bottom cover of the valve seat for sealing, making the installation of the clutch and the valve seat more convenient. In addition, the present invention also provides a rotating shaft in the device, which can rotate due to the flow impact of the airflow when the airflow circulates through the air guide groove on the connecting block. Then, due to the rotation of the rotating shaft and the influence of the inner wall arc block, the airflow is allowed to spirally flow, making the flow of the airflow faster and not accumulating in the upper joint to affect the airflow valve.

[0033] Exemplary embodiment 1

[0034] The present exemplary embodiment provides an air hammer resistance transmission clutch device.

[0035] Figure 1 FIG2 shows a schematic structural diagram of the first part of the air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention. Figure 2 FIG2 shows a schematic structural diagram of the second part of the air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention. Figure 3 A schematic diagram showing a valve seat and a clutch in an air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention is shown. Figure 4 Shown Figure 2 The enlarged exploded view of point A in the middle, Figure 5 A schematic diagram showing a connecting portion and a rotating shaft in an air hammer resistance transmission clutch device according to an exemplary embodiment of the present invention.

[0036] like Figures 1 to 5 As shown in , the air hammer resistance transmission clutch device described in this exemplary embodiment may include a shell 1, an upper joint 2, a clutch 3, a gas distribution seat 4, an air flow valve 5 and a rotating rod 6, wherein the shell 1 may be a hollow straight cylindrical structure; the upper end of the upper joint 2 may be in the shape of a drill pipe male buckle, and the lower end may extend from the upper end of the shell 1 into the shell 1 and be fixedly connected to the shell 1; the gas distribution seat 4 may be inserted into the shell 1, and its outer diameter matches the inner diameter of the shell 1, that is, when the gas distribution seat 4 is inserted into the shell 1, its outer wall fits the inner wall of the shell 1; the clutch The clutch 3 can be inserted into the valve seat 4, with a gap between its outer wall and the inner wall of the valve seat 4. In other words, the outer diameter of the clutch 3 is smaller than the inner diameter of the valve seat 4. The upper end of the clutch 3 is fixedly connected to the lower end of the upper joint 2. The airflow valve 5 can be installed at the upper end of the clutch 3. The upper end of the airflow valve 5 can abut against a step formed on the inner wall of the upper joint 2, blocking the gas passage in the upper joint 2. It can also be pushed downward axially by the gas in the upper joint 2, thereby opening the gas passage. In other words, the airflow valve 5 can control the opening and closing of the gas passage in the upper joint 2. The rotating rod 6 extends from the lower end of the clutch 3 into the clutch 3. The resistance generated by the rotating rod 6 during rotation can be transmitted to the upper joint 2 through the clutch 3.

[0037] In this embodiment, a gas passage running through the upper and lower parts may be opened in the center of the upper joint 2, and the upper joint 2 may be fixedly connected to the outer shell 1 by threads, but the present invention is not limited to this. The upper joint 2 and the outer shell 1 may also be connected by other fixed connection methods such as screws, bolts or pins.

[0038] Furthermore, a step may be formed on the inner wall of the upper joint 2, so that the inner diameter of the upper end of the gas channel of the upper joint 2 is smaller than the inner diameter of the lower end. The step surface of the inner wall of the upper joint 2 can cooperate with the conical surface at the upper end of the airflow valve 5. When the upper end of the airflow valve 5 abuts against the step surface, the gas channel can be blocked, but the present invention is not limited to this. The inner wall of the upper joint 2 can also be formed into other structures, as long as it can cooperate with the airflow valve 5 to realize the function of opening and closing the gas channel.

[0039] In this embodiment, the gas distribution seat 4 is inserted into the outer shell 1, and its upper end can abut against the lower end of the upper joint 2 to achieve axial fixation, but the present invention is not limited to this. The gas distribution seat 4 and the outer shell 1 can also be fixedly connected by other means such as threaded fitting.

[0040] Furthermore, the outer shape of the gas distribution seat 4 is a cylindrical structure, and four second air holes 41 are opened in its side wall. The second air holes 41 first extend axially downward from the upper end of the gas distribution seat 4 for a distance, and then extend radially toward the outer wall of the gas distribution seat 4 for a distance until it penetrates the outer wall of the gas distribution seat 4. That is to say, the upper and lower ends of the second air holes 41 respectively penetrate the upper surface and the outer wall of the gas distribution seat 4, and the gas channel of the upper joint 2 can be connected with the outer side of the outer wall of the gas distribution seat 4, but the present invention is not limited to this. The number of second air holes 41 opened in the side wall of the gas distribution seat 4 can also be other positive integers other than 4, and the penetration method is not limited to axial and radial penetration, as long as the gas channel of the upper joint 2 can be connected with the outer side of the outer wall of the gas distribution seat 4.

[0041] In this embodiment, the clutch 3 is inserted into the valve seat 4, and the lower end is sleeved on the rotating rod 6. The outer diameter of the clutch 3 is smaller than the inner diameter of the valve seat 4. That is to say, there is a gap between the outer wall of the clutch 3 and the inner wall of the valve seat 4. When the rotating rod 6 rotates, the torque and resistance generated can be transmitted to the clutch 3, but due to the gap between the clutch 3 and the valve seat 4, the torque and resistance cannot be transmitted to the valve seat 4, thereby protecting the valve seat 4 from damage.

[0042] Furthermore, a connecting portion 31 is formed at the upper end of the clutch 3, and the outer diameter of the connecting portion 31 is larger than the outer diameter of other parts of the clutch 3. That is, the connecting portion 31 makes the outer wall of the clutch 3 protrude radially outward, and at the same time, the connecting portion 31 and the upper joint 2 are fixedly connected by rivets, thereby fixing the clutch 3 and the upper joint 2 together. When the rotating rod 6 rotates, the torque and resistance generated by its rotation can be transmitted to the upper joint 2 through the clutch 3, and due to the gap between the clutch 3 and the valve seat 4, the torque and resistance cannot be transmitted to the valve seat 4, thereby protecting the valve seat 4 from damage. However, the present invention is not limited to this, and the connecting portion 31 and the upper joint 2 can also be fixedly connected by other means such as screws, bolts or threaded fitting.

[0043] Furthermore, four first air holes 311 are provided on the connecting portion 31, wherein the first air hole 311 close to the upper joint 2 can extend axially from the upper end of the clutch 3 until it penetrates the outer wall of the clutch 3, and the first air hole 311 close to the axis of the clutch 3 can first extend axially from the upper end of the clutch 3 for a distance, and then extend radially toward the outer wall of the clutch 3 for a distance until it penetrates the outer wall of the clutch 3. That is to say, the upper and lower ends of the first air hole 311 can respectively penetrate the upper surface and outer wall of the clutch 3, so that the gas channel of the upper joint 2 can be connected with the outer side of the outer wall of the clutch 3, but the present invention is not limited to this. The number of the first air holes 311 provided on the connecting portion 31 can also be other positive integers other than 4, and the penetration method is not limited to axial and radial penetration, as long as the gas channel of the upper joint 2 can be connected with the outer side of the outer wall of the clutch 3.

[0044] Furthermore, when the clutch 3 and the gas distribution seat 4 are inserted into the outer shell 1 and the upper joint 2, an air guide space is formed between the outer wall of the clutch 3, the inner wall of the upper joint 2 and the upper end of the gas distribution seat 4, so that the first air hole 311 and the second air hole 41 can be connected. That is to say, the gas can flow from the gas channel of the upper joint 2 along the first air hole 311, the air guide space, and the second air hole 41 to the outside of the gas distribution seat 4, thereby realizing the conduction of the gas from top to bottom, but the present invention is not limited to this, and the air guide space is not limited to the form in this embodiment, as long as the connection between the first air hole 311 and the second air hole 41 can be achieved.

[0045] In this embodiment, the clutch 3 also includes a rotating shaft 32, which is arranged in the first air hole 311. The rotating shaft 32 is a hollow cylindrical structure. When the gas flows through the first air hole 311, it can also flow along the inner cavity of the rotating shaft 32. A plurality of arc blocks 3112, such as 8, are provided on the inner wall of the rotating shaft 32. The arc blocks 3112 can be tilted on the inner wall of the rotating shaft 32. That is, a non-vertical angle, such as 45 degrees, is formed between the arc blocks 3112 and the axis of the rotating shaft 32. When the gas flows through the inner cavity of the rotating shaft 32, it can flow between two adjacent arc blocks 3112, thereby forming a gas in the rotating shaft 32. The spiral airflow, at the same time, the rotating shaft 32 can also generate a circumferential rotational force to rotate under the drive of the airflow. The spiral airflow can accelerate the flow speed of the gas in the first air hole 311, thereby avoiding the accumulation of high air pressure in the gas channel of the upper joint 2 due to untimely gas flow, which has a destructive effect on the airflow valve. However, the present invention is not limited to this. The number of arc blocks 3112 in each rotating shaft 32 can also be other positive integers other than 8, and the angle between the arc block 3112 and the axis of the rotating shaft 32 can also be other angles other than 45 degrees and 90 degrees, as long as the axial airflow can drive the rotating shaft 32 to rotate.

[0046] Furthermore, seven first annular grooves 3111 are circumferentially formed on the inner wall of the first air hole 311, and each of the first annular grooves 3111 is arranged side by side along the axial direction of the first air hole 311, and the spacing between two adjacent first annular grooves 3111 is the same. At the same time, seven second annular grooves 321 are also formed on the outer wall of the rotating shaft 32, and each of the second annular grooves 321 is arranged side by side along the axial direction of the rotating shaft 32, and the seven second annular grooves 321 correspond one-to-one to the seven first annular grooves 3111, that is, the spacing between two adjacent second annular grooves 321 is also the same, and an annular cavity is formed between each corresponding first annular groove 3111 and second annular groove 321, and a plurality of balls 33 are installed in each annular cavity, and the balls 33 can respectively abut against the bottom of the first annular groove 3111 and the second annular groove 321, and the balls 33 can automatically rotate in each annular cavity. By rolling, when the rotating shaft 32 rotates in the first air hole 311, it can also drive the balls 33 to roll in the annular cavity formed between the first annular groove 3111 and the second annular groove 321, thereby further reducing the rotational friction of the rotating shaft 32 in the first air hole 311, so that the rotating shaft 32 rotates more smoothly in the first air hole 311, but the present invention is not limited to this. The number of the first annular groove 3111 and the second annular groove 321 can also be other positive integers other than 7, and the spacing distances between two adjacent first annular grooves 3111 or second annular grooves 321 can also be different, as long as each first annular groove 3111 and the second annular groove 321 can correspond to each other to form an annular cavity; the number of balls 33 in each annular cavity can also be any number, as long as they can be driven by the rotating shaft 32 to roll in the annular cavity to reduce the rolling friction of the rotating shaft 32.

[0047] The working process of the air hammer resistance transmission clutch device according to this exemplary embodiment is described in detail below:

[0048] The high-pressure gas enters the gas channel of the upper joint 2 from the upper part of the upper joint 2. Under the action of high pressure, the upper conical surface of the air flow valve 5 is pushed away from the step surface of the inner wall of the upper joint 2 and moves downward. At this time, the clutch 3 is in the forward gear state, and the inner sleeve of the clutch 3 rotates with the rotating rod 6. The high-pressure gas flows out from the outer wall of the gas distribution seat 4 through the first air hole 311, the air guide space and the second air hole 41 at the same time. When the high-pressure gas passes through the rotating shaft 32 in the first air hole 311, a spiral airflow is generated under the action of the arc block 3112 on the inner wall of the rotating shaft 32, which accelerates the flow speed of the gas in the first air hole 311 and drives the rotation of the rotating shaft 32, thereby avoiding the accumulation of high pressure in the gas channel of the upper joint 2 due to untimely gas flow, causing damage to the air flow valve. In addition, in the forward gear state, the torque and resistance generated by the rotation of the rotating rod 6 can be transmitted to the upper joint 2 through the clutch 3, avoiding the resistance and torque being transmitted to the gas distribution seat 4 and causing damage to the gas distribution seat 4. When the piston of the air flow valve 5 moves upward, the clutch 3 is in a reverse gear state, and the rotating rod 6 is locked and cannot rotate.

[0049] Exemplary embodiment 2

[0050] The present exemplary embodiment provides an air hammer resistance transmission clutch.

[0051] like Figures 1 to 5 As shown in , a connecting portion 31 is formed at the upper end of the clutch 3, and the outer diameter of the connecting portion 31 is larger than the outer diameter of other parts of the clutch 3, that is, the connecting portion 31 makes the outer wall of the clutch 3 protrude radially outward. When the clutch 3 is installed in the air hammer resistance transmission clutch device described in exemplary embodiment 1, the connecting portion 31 can be fixedly connected to the upper joint 2 by rivets, thereby fixing the clutch 3 and the upper joint 2 together. When the rotating rod 6 at the lower end of the clutch 3 rotates, the torque and resistance generated by its rotation can be transmitted to the upper joint 2 through the clutch 3, and due to the gap between the clutch 3 and the valve seat 4, the torque and resistance cannot be transmitted to the valve seat 4, thereby protecting the valve seat 4 from damage. However, the present invention is not limited to this. The connecting portion 31 and the upper joint 2 can also be fixedly connected by other means such as screws, bolts or threaded fitting.

[0052] Furthermore, four first air holes 311 are provided on the connecting portion 31, wherein the first air hole 311 close to the upper joint 2 can extend axially from the upper end of the clutch 3 until it penetrates the outer wall of the clutch 3, and the first air hole 311 close to the axis of the clutch 3 can first extend axially from the upper end of the clutch 3 for a distance, and then extend radially toward the outer wall of the clutch 3 for a distance until it penetrates the outer wall of the clutch 3. That is to say, the upper and lower ends of the first air hole 311 can respectively penetrate the upper surface and outer wall of the clutch 3, so that the gas channel of the upper joint 2 can be connected with the outer side of the outer wall of the clutch 3, but the present invention is not limited to this. The number of the first air holes 311 provided on the connecting portion 31 can also be other positive integers other than 4, and the penetration method is not limited to axial and radial penetration, as long as the gas channel of the upper joint 2 can be connected with the outer side of the outer wall of the clutch 3.

[0053] Furthermore, when the clutch 3 and the gas distribution seat 4 are inserted into the outer shell 1 and the upper joint 2, an air guide space is formed between the outer wall of the clutch 3, the inner wall of the upper joint 2 and the upper end of the gas distribution seat 4, so that the first air hole 311 and the second air hole 41 can be connected. That is to say, the gas can flow from the gas channel of the upper joint 2 along the first air hole 311, the air guide space and the second air hole 41 to the outside of the gas distribution seat 4, thereby realizing the conduction of the gas from top to bottom, but the present invention is not limited to this, and the air guide space is not limited to the form in this embodiment, as long as the connection between the first air hole 311 and the second air hole 41 can be achieved.

[0054] In this embodiment, the clutch 3 also includes a rotating shaft 32, which is arranged in the first air hole 311. The rotating shaft 32 is a hollow cylindrical structure. When the gas flows through the first air hole 311, it can also flow along the inner cavity of the rotating shaft 32. A plurality of arc blocks 3112, such as 8, are provided on the inner wall of the rotating shaft 32. The arc blocks 3112 can be tilted on the inner wall of the rotating shaft 32. That is, a non-vertical angle, such as 45 degrees, is formed between the arc blocks 3112 and the axis of the rotating shaft 32. When the gas flows through the inner cavity of the rotating shaft 32, it can flow between two adjacent arc blocks 3112, thereby forming a gas in the rotating shaft 32. The spiral airflow, at the same time, the rotating shaft 32 can also generate a circumferential rotational force to rotate under the drive of the airflow. The spiral airflow can accelerate the flow speed of the gas in the first air hole 311, thereby avoiding the accumulation of high air pressure in the gas channel of the upper joint 2 due to untimely gas flow, which has a destructive effect on the airflow valve. However, the present invention is not limited to this. The number of arc blocks 3112 in each rotating shaft 32 can also be other positive integers other than 8, and the angle between the arc block 3112 and the axis of the rotating shaft 32 can also be other angles other than 45 degrees and 90 degrees, as long as the axial airflow can drive the rotating shaft 32 to rotate.

[0055] Furthermore, seven first annular grooves 3111 are circumferentially formed on the inner wall of the first air hole 311, and each of the first annular grooves 3111 is arranged side by side along the axial direction of the first air hole 311, and the spacing between two adjacent first annular grooves 3111 is the same. At the same time, seven second annular grooves 321 are also formed on the outer wall of the rotating shaft 32, and each of the second annular grooves 321 is arranged side by side along the axial direction of the rotating shaft 32, and the seven second annular grooves 321 correspond one-to-one to the seven first annular grooves 3111, that is, the spacing between two adjacent second annular grooves 321 is also the same, and an annular cavity is formed between each corresponding first annular groove 3111 and second annular groove 321, and a plurality of balls 33 are installed in each annular cavity, and the balls 33 can respectively abut against the bottom of the first annular groove 3111 and the second annular groove 321, and the balls 33 can automatically rotate in each annular cavity. By rolling, when the rotating shaft 32 rotates in the first air hole 311, it can also drive the balls 33 to roll in the annular cavity formed between the first annular groove 3111 and the second annular groove 321, thereby further reducing the rotational friction of the rotating shaft 32 in the first air hole 311, so that the rotating shaft 32 rotates more smoothly in the first air hole 311, but the present invention is not limited to this. The number of the first annular groove 3111 and the second annular groove 321 can also be other positive integers other than 7, and the spacing distances between two adjacent first annular grooves 3111 or second annular grooves 321 can also be different, as long as each first annular groove 3111 and the second annular groove 321 can correspond to each other to form an annular cavity; the number of balls 33 in each annular cavity can also be any number, as long as they can be driven by the rotating shaft 32 to roll in the annular cavity to reduce the rolling friction of the rotating shaft 32.

[0056] Exemplary Embodiment 3

[0057] The present exemplary embodiment provides a guided air hammer.

[0058] The guided air hammer described in this exemplary embodiment includes the air hammer resistance transmission clutch device described in exemplary embodiment 1 or the air hammer resistance transmission clutch described in exemplary embodiment 2. Its specific structure is consistent with the air hammer resistance transmission clutch device described in exemplary embodiment 1 and the air hammer resistance transmission clutch described in exemplary embodiment 2, and will not be repeated here.

[0059] It also includes components such as a guide sleeve and a drill bit, which can realize the function of axially driven drilling operations.

[0060] Exemplary Embodiment 4

[0061] This exemplary embodiment provides an application of the guided air hammer described in exemplary embodiment 3 in drilling operations.

[0062] like Figures 1 to 5As shown in the figure, during drilling operations, high-pressure gas enters the gas channel of the upper joint 2 from the upper part of the upper joint 2. Under the action of high pressure, the upper conical surface of the air flow valve 5 is pushed away from the step surface of the inner wall of the upper joint 2 and moves downward. At this time, the clutch 3 is in the forward gear state, and the inner sleeve of the clutch 3 and the rotating rod 6 rotate together. The high-pressure gas flows out from the outer wall of the gas distribution seat 4 through the first air hole 311, the air guide space and the second air hole 41 at the same time. When the high-pressure gas passes through the rotating shaft 32 in the first air hole 311, a spiral airflow is generated under the action of the arc block 3112 on the inner wall of the rotating shaft 32, which accelerates the flow speed of the gas in the first air hole 311 and drives the rotation of the rotating shaft 32, thereby avoiding the accumulation of high pressure in the gas channel of the upper joint 2 due to untimely gas flow. Damage to the air flow valve is caused. In addition, in the forward gear state, the torque and resistance generated by the rotation of the rotating rod 6 can be transmitted to the upper joint 2 through the clutch 3, avoiding the resistance and torque being transmitted to the gas distribution seat 4 and causing damage to the gas distribution seat 4. When the piston of the air flow valve 5 moves upward, the clutch 3 is in a reverse gear state, and the rotating rod 6 is locked and cannot rotate.

[0063] In summary, the present invention can directly connect the clutch to the upper joint by providing a connecting portion on the clutch of the device, so that the resistance generated by the rotation of the rotating rod will not be transmitted to the valve seat, but will directly act on the upper joint, thereby avoiding damage to the valve seat under the influence of long-term resistance. The clutch can also replace the bottom cover of the valve seat for sealing, making the installation of the clutch and the valve seat more convenient. In addition, a rotating shaft is also provided in the clutch of the device. When the airflow circulates through the air guide groove on the connecting block, the rotating shaft can rotate due to the flow impact of the airflow, and then the airflow is spirally flowed due to the rotation of the rotating shaft and the influence of the inner wall arc block, so that the airflow flows faster and will not accumulate in the upper joint and affect the airflow valve.

[0064] Although the present invention has been described above with reference to the exemplary embodiments and the accompanying drawings, it will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the spirit and scope of the claims.

Claims

1. An air hammer resistance transmission clutch device, characterized in that: The clutch device includes a housing, an upper joint, a clutch, a gas distribution seat and a rotating rod, wherein: The lower end of the upper joint is passed through the upper end of the shell and fixedly connected; The gas distribution seat is arranged in the shell, and the upper end of the gas distribution seat abuts against the lower end of the upper joint; The lower end of the clutch is inserted into the inner cavity of the valve seat, and a gap is formed between the outer wall of the lower end of the clutch and the inner wall of the valve seat. The clutch is connected to a connecting portion, and the clutch is fixedly connected to the upper joint through the connecting portion. The upper end of the rotating rod is inserted into the clutch, and the rotating rod can rotate around its axis while transmitting the rotation resistance to the upper joint through the clutch; The connecting portion is provided with a plurality of first air holes, one opening of the first air hole is formed at the end portion of the upper end of the connecting portion, and another opening of the first air hole is formed on the outer wall of the body portion of the connecting portion; A plurality of second air holes are formed on the side wall of the gas distribution seat, one opening of the second air hole is formed at the end of the upper end of the gas distribution seat and communicates with the gap, and the other opening is formed on the outer wall of the body of the gas distribution seat; An air guide space is formed between the outer wall of the clutch, the inner wall of the upper joint and the upper end of the gas distribution seat. The first air hole, the air guide space and the second air hole can be connected to each other, and the air flow can flow from the top of the clutch along the first air hole, the air guide space and the second air hole to the outside of the gas distribution seat.

2. The air hammer resistance transmission clutch device according to claim 1, characterized in that: A rotating shaft is passed through the first air hole, and a plurality of arc blocks are provided on the inner wall of the rotating shaft. The arc blocks can drive the rotating shaft to rotate circumferentially under the action of the airflow, so that the airflow in the rotating shaft flows in a spiral manner.

3. The air hammer resistance transmission clutch device according to claim 2, characterized in that: A plurality of first annular grooves are arranged side by side in the axial direction on the inner wall of the first air hole, and a plurality of second annular grooves are arranged side by side in the axial direction on the outer wall of the rotating shaft. The first annular grooves correspond to the second annular grooves one by one, and a plurality of balls are arranged in each pair of corresponding first annular grooves and second annular grooves along the circumference of the first air hole. The balls are respectively in contact with the bottom of the first annular groove and the second annular groove. The rotating shaft can drive the balls to roll in the first annular groove and the second annular groove while rotating circumferentially.

4. The air hammer resistance transmission clutch device according to claim 2, characterized in that: The angle between the arc block and the axis of the rotating shaft is a non-vertical angle.

5. The air hammer resistance transmission clutch device according to claim 1, characterized in that: The air hammer also includes an air flow valve, which is axially installed between the upper joint and the clutch. The upper end of the air flow valve abuts against the step of the inner wall of the upper joint and can move axially downward under the action of the air flow to separate from the step of the inner wall of the upper joint to control the opening and closing of the gas channel of the upper joint.

6. The air hammer resistance transmission clutch device according to claim 1, characterized in that: A plurality of rivets are provided through the side walls of the connecting portion and the upper joint, and the rivets can fix the clutch and the upper joint.

7. A guided air hammer, characterized in that: The guided air hammer includes the resistance transmission clutch device according to any one of claims 1 to 6.

8. Use of the guided air hammer according to claim 7 in drilling operations.

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