A bidirectional buffer box

Abstract

The utility model relates to a bidirectional buffer female head belongs to the drilling machine drilling technical field. It includes clamping fixed sleeve pipe, connects pressure disc and drill rod assembly, and clamping fixed sleeve pipe includes outer rod body, is equipped with sleeve pipe mechanism with the clamp of drilling machine connected with outer rod body one end, is equipped with outer connecting portion with outer rod body other end, is equipped with outer rod body positioning connecting mechanism and connecting bolt hole with connecting pressure disc, drill rod assembly includes inner rod body, is equipped with female screw joint with drill rod with inner rod body one end, is equipped with external screw joint with drill rod with inner rod body other end, is equipped with inner connecting portion in the middle, and clamping fixed sleeve pipe and drill rod assembly are connected through the spline of outer connecting portion and inner connecting portion, and are fixed locking through connecting pressure disc. Its solve existing female drill rod dismounts and screws when, buffer reduces female drill rod thread wear, increases the technical problem of female drill rod life.

Description

Technical Field

[0001] This utility model belongs to the field of drilling machine drilling equipment, and relates to a bidirectional buffer head. Background Technology

[0002] Drilling equipment is increasingly moving towards automation and intelligence. Intelligent drilling machines require a fixed, positioned main drill rod. This main drill rod serves as the intermediate device connecting the drilling machine's power unit and the drill rod, transmitting torque and pulling force from the power unit to the drill rod during drilling. Due to its high frequency of use during drilling, the male threaded joint connecting the main drill rod and the drill rod is prone to wear and breakage, making it a consumable part requiring frequent replacement. Existing main drill rods typically employ a fixed structure or have a unidirectional floating buffer position. However, during the disassembly and reassembly of the main drill rod, wear occurs in both directions on the male thread, significantly reducing its lifespan. When the thread is damaged, the entire main drill rod must be replaced, resulting in high drilling machine costs and maintenance expenses. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a bidirectional buffer female head to solve the technical problems of wear of male threads, high replacement frequency and high maintenance cost in the bidirectional tightening and loosening process of existing female drill rods.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A bidirectional buffer female head includes a clamping and fixing sleeve, a connecting pressure plate, and a drill rod assembly. The clamping and fixing sleeve includes an outer rod body, one end of which is provided with a sleeve mechanism connected to a drilling machine fixture, and the other end of which is provided with an outer connecting part. The connecting pressure plate is provided with an outer rod body positioning and connecting mechanism and connecting bolt holes. The drill rod assembly includes an inner rod body, one end of which is provided with a female threaded joint connected to the drill rod, and the other end of which is provided with a male threaded joint connected to the drill rod. An inner connecting part is provided in the middle. The clamping and fixing sleeve and the drill rod assembly are connected by splines through the outer connecting part and the inner connecting part, and are fixed and locked by the connecting pressure plate. The sleeve mechanism is provided with a round tube with an outer diameter that matches the corresponding drilling machine fixture.

[0006] Optionally, the outer connecting part includes an outer ring fixed to one end of the outer rod body. The inner ring of the outer ring has evenly distributed internal splines, and the end face of the outer ring has evenly distributed threaded holes. The end face of the outer ring is provided with a connecting pressure plate positioning and connecting mechanism. The inner connecting part has a circular boss fixed in the middle of the inner rod body. The outer ring of the circular boss has evenly distributed external splines. One side of the circular boss has a positive buffer spring seat, and the other side of the circular boss has a reverse buffer spring seat. The connecting pressure plate positioning and connecting mechanism has a stop that mates with the outer rod body. The circular boss has a parallel stepped shaft with a diameter larger than the outer diameter of the drill rod. The positive buffer spring seat is a blind hole evenly distributed parallel to the axis on one end face of the circular boss. The reverse buffer spring seat is a blind hole evenly distributed parallel to the axis on the other end face of the circular boss. The blind holes on both sides are evenly staggered and facing each other.

[0007] Optionally, the outer rod positioning and connecting mechanism is provided with a stop that cooperates with the connecting pressure plate.

[0008] Optionally, a buffer spring is installed between the positive buffer spring seat and the outer rod body, and a buffer spring is installed between the negative buffer spring seat and the connecting pressure plate.

[0009] Optionally, the arc surface of the drill pipe assembly is provided with an auxiliary structure, which includes a fixed ring, a movable ring, and a limiting ring. The fixed ring is fixedly connected to the drill pipe assembly, the movable ring is slidably connected to the drill pipe assembly, and the limiting ring is fixedly connected to the drill pipe assembly. A limiting spring is provided between the fixed ring and the movable ring, and the two ends of the limiting spring are fixedly connected to the fixed ring and the movable ring, respectively. A limiting cylinder is fixedly connected to the side of the movable ring away from the fixed ring, and a guide ring is fixedly connected to the side of the limiting cylinder away from the movable ring.

[0010] Optionally, the arc surface of the limiting cylinder is provided with a plurality of anti-slip grooves, and the plurality of anti-slip grooves are evenly provided on the arc surface of the limiting cylinder.

[0011] Optionally, a protective pad is fixedly connected to the side of the limiting ring near the moving ring, and the protective pad abuts against the moving ring.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The present invention relates to a bidirectional buffer female connector, which has a simple and reliable structure and transmits positive and negative torque through the spline between the outer connecting part and the inner connecting part.

[0014] 2. The present invention relates to a bidirectional buffer female head, which clamps the female drill rod in the power component fixture of the drilling machine, making it convenient and quick to disassemble and replace the female drill rod.

[0015] 3. The bidirectional buffer head involved in this utility model, by providing a bidirectional and evenly distributed buffer spring, realizes the floating of the mother drill rod during the tightening and loosening process, increases the service life of the mother drill rod, and reduces maintenance costs.

[0016] 4. The bidirectional buffer female head involved in this utility model can limit the drill rod through the set auxiliary structure, which can facilitate the personnel to quickly install the drill rod on the drill rod assembly, thereby improving the installation efficiency of the drill rod. Then, when the male threaded joint is not used, the limiting sleeve can protect the male threaded joint.

[0017] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of a bidirectional buffer female connector involved in this utility model;

[0020] Figure 2 This is a front view of a bidirectional buffer female connector involved in this utility model;

[0021] Figure 3 for Figure 2 Sectional view along the AA direction.

[0022] Figure 4 This is a schematic diagram of the clamping and fixing sleeve involved in this utility model;

[0023] Figure 5 This is a schematic diagram of the connecting pressure plate involved in this utility model;

[0024] Figure 6 This is a schematic diagram of the drill pipe assembly involved in this utility model;

[0025] Figure 7 This is a schematic diagram of the auxiliary structure involved in this utility model;

[0026] Figure 8 The utility model involved Figure 7 A schematic diagram of the cross-sectional structure;

[0027] Figure 9 The utility model involved Figure 8A magnified structural diagram at point A. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] Please see Figures 1-9 The component numbers in the attached diagram represent: clamping and fixing sleeve 1, connecting pressure plate 2, drill rod assembly 3, forward buffer spring 4, reverse buffer spring 5, bolt 6, sleeve mechanism 101, outer ring 102, internal spline 103, threaded hole 104, connecting pressure plate positioning and connecting mechanism 105, outer rod positioning and connecting mechanism 201, bolt hole 202, female threaded connector 301, external spline 302, ring boss 303, male threaded connector 304, forward buffer spring seat 305, reverse buffer spring seat 306, auxiliary structure 7, fixing ring 71, limiting spring 72, moving ring 73, limiting cylinder 74, anti-slip groove 75, guide ring 76, limiting ring 77, and protective pad 78.

[0032] This utility model relates to a bidirectional buffer female connector, such as Figure 1-3As shown, it includes a clamping and fixing sleeve 1, a connecting pressure plate 2, a drill rod assembly 3, a forward buffer spring 4, a reverse buffer spring 5, and a bolt 6.

[0033] like Figure 4 As shown, one end of the clamping and fixing sleeve 1 is provided with a sleeve mechanism 101 connected to the drilling machine fixture, and the other end is provided with an external connecting part. The external connecting part includes an outer ring 102 fixed to one end of the outer rod body. The inner ring of the outer ring 102 is provided with uniformly distributed inner splines 103, the end face of the outer ring 102 is provided with uniformly distributed threaded holes 104, and the end face of the outer ring 102 is provided with a connecting pressure plate positioning connecting mechanism 105.

[0034] like Figure 5 As shown, the connecting pressure plate 2 is provided with an outer rod positioning and connecting mechanism 201 and a connecting bolt hole 202;

[0035] like Figure 6 As shown, the drill pipe assembly 3 has a female threaded connector 301 connected to the drill pipe at one end and a male threaded connector 304 connected to the drill pipe at the other end. It has an inner connecting part in the middle, which includes an annular boss 303 fixed in the middle of the inner rod body. The annular boss 303 has uniformly distributed external splines 302 on its outer ring. A positive buffer spring seat 305 is provided on one side of the annular boss 303, and a reverse buffer spring seat 306 is provided on the other side of the annular boss 303. The clamping and fixing sleeve 1 and the drill pipe assembly 3 are connected by splines in the outer connecting part and the inner connecting part, and are fixed and locked by the connecting pressure plate 2.

[0036] This utility model relates to a bidirectional buffer female connector, such as Figure 7 As shown, the arc surface of the drill pipe assembly 3 is provided with an auxiliary structure 7.

[0037] like Figure 8 and Figure 9As shown, the auxiliary structure 7 includes a fixed ring 71, a movable ring 73, and a limiting ring 77. The fixed ring 71 is fixedly connected to the drill pipe assembly 3, the movable ring 73 is slidably connected to the drill pipe assembly 3, and the limiting ring 77 is fixedly connected to the drill pipe assembly 3. A limiting spring 72 is provided between the fixed ring 71 and the movable ring 73. The two ends of the limiting spring 72 are fixedly connected to the fixed ring 71 and the movable ring 73, respectively. A limiting cylinder 74 is fixedly connected to the side of the movable ring 73 away from the fixed ring 71. A guide ring 76 is fixedly connected to the side of the limiting cylinder 74 away from the movable ring 73. The arc surface of the limiting cylinder 74 is provided with several anti-slip grooves 75. The anti-slip grooves 75 are evenly distributed on the arc surface of the limiting cylinder 74. The anti-slip grooves 75 can increase the friction between the personnel's hands and the limiting cylinder 74, and can prevent the personnel from slipping during the movement of the limiting cylinder 74. A protective pad 78 is fixedly connected to the side of the limiting ring 77 near the moving ring 73. The protective pad 78 abuts against the moving ring 73. The protective pad 78 can protect the moving ring 73 and the limiting ring 77, and can prevent the moving ring 73 from directly contacting the limiting ring 77.

[0038] The clamping sleeve 1 is fixedly clamped in the middle of the drilling machine fixture, transmitting forward and reverse torque and pushing and pulling force. The clamping sleeve 1 and the left end face of the drill rod assembly 3 are equipped with evenly distributed positive buffer springs 4 to buffer and reduce wear when the mother drill rod is screwed. The right end face of the drill rod assembly 3 and the connecting pressure plate 2 are equipped with evenly distributed reverse buffer springs 5. The entire mother drill rod is fixed and pressed by bolts 6 to buffer and reduce wear when the mother drill rod is unscrewed. Through the positive spring buffer structure, the wear of the entire mother drill rod is reduced, the service life of the mother drill rod is increased, the replacement frequency of the mother drill rod is reduced, and the overall maintenance cost of the drilling machine is saved.

[0039] In addition, when personnel need to install the drill bit on the male threaded connector 304, they can first move the drill bit so that it slides into the inner wall of the limiting cylinder 74. At this time, the limiting cylinder 74 will limit the drill bit, so that the drill rod assembly 3 and the drill bit are on the same horizontal line, which makes it convenient for personnel to connect and install the drill bit with the male threaded connector 304. When personnel need to check the damage of the male threaded connector 304, they can first use the moving ring 73 to move the moving ring 73 towards the fixed ring 71. The anti-slip groove 75 opened on the arc surface of the limiting cylinder 74 can increase the friction between the personnel's hands and the limiting cylinder 74, which can prevent the personnel from slipping during the movement of the limiting cylinder 74, until the male threaded connector 304 completely slides out of the interior of the limiting cylinder 74. The protective pad 78 on the side of the limiting ring 77 near the moving ring 73 can protect the moving ring 73 and the limiting ring 77, and can prevent the moving ring 73 from directly contacting the limiting ring 77.

Claims

1. A bidirectional buffer female connector, characterized in that: The system includes a clamping and fixing sleeve, a connecting pressure plate, and a drill rod assembly. The clamping and fixing sleeve includes an outer rod body, one end of which has a sleeve mechanism connected to the drilling machine fixture, and the other end of which has an outer connecting part. The connecting pressure plate has an outer rod body positioning and connecting mechanism and connecting bolt holes. The drill rod assembly includes an inner rod body, one end of which has a female threaded joint connected to the drill rod, and the other end of which has a male threaded joint connected to the drill rod. An inner connecting part is provided in the middle. The clamping and fixing sleeve and the drill rod assembly are connected by splines through the outer connecting part and the inner connecting part, and are fixed and locked by the connecting pressure plate. The sleeve mechanism has a round tube with an outer diameter that matches the corresponding drilling machine fixture.

2. A bidirectional buffer female connector as described in claim 1, characterized in that: The outer connecting part includes an outer ring fixed to one end of the outer rod body. The inner ring of the outer ring has evenly distributed internal splines, and the end face of the outer ring has evenly distributed threaded holes. The end face of the outer ring has a connecting pressure plate positioning and connecting mechanism. The inner connecting part has a circular boss fixed in the middle of the inner rod body. The outer ring of the circular boss has evenly distributed external splines. One side of the circular boss has a positive buffer spring seat, and the other side of the circular boss has a reverse buffer spring seat. The connecting pressure plate positioning and connecting mechanism has a stop that mates with the outer rod body. The circular boss has a parallel stepped shaft with a diameter larger than the outer diameter of the drill rod. The positive buffer spring seat is a blind hole evenly distributed parallel to the axis on one end face of the circular boss. The reverse buffer spring seat is a blind hole evenly distributed parallel to the axis on the other end face of the circular boss. The blind holes on both sides are evenly staggered and facing each other.

3. A bidirectional buffer female connector as described in claim 1, characterized in that: The outer rod positioning and connecting mechanism is provided with a stop that cooperates with the connecting pressure plate.

4. A bidirectional buffer female connector as described in claim 2, characterized in that: A buffer spring is installed between the positive buffer spring seat and the outer rod body, and a buffer spring is installed between the negative buffer spring seat and the connecting pressure plate.

5. A bidirectional buffer female connector as described in claim 1, characterized in that: The drill pipe assembly has an auxiliary structure on its arc surface, which includes a fixed ring, a movable ring, and a limiting ring. The fixed ring is fixedly connected to the drill pipe assembly, the movable ring is slidably connected to the drill pipe assembly, and the limiting ring is fixedly connected to the drill pipe assembly. A limiting spring is provided between the fixed ring and the movable ring, with both ends of the limiting spring fixedly connected to the fixed ring and the movable ring, respectively. A limiting cylinder is fixedly connected to the side of the movable ring away from the fixed ring, and a guide ring is fixedly connected to the side of the limiting cylinder away from the movable ring.

6. A bidirectional buffer female connector as described in claim 5, characterized in that: The arc surface of the limiting cylinder is provided with a number of anti-slip grooves, which are evenly distributed on the arc surface of the limiting cylinder.

7. A bidirectional buffer female connector as described in claim 5, characterized in that: A protective pad is fixedly connected to the side of the limiting ring near the moving ring, and the protective pad abuts against the moving ring.

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