Connecting rod for reamer

Abstract

The utility model relates to the technical field of drilling equipment, in particular to a connecting rod for a reamer, which comprises the reamer, a connecting rod body, a center drill and a positioning structure, the connecting rod body is fittingly mounted on the reamer, and the positioning structure for quickly detaching the center drill is fittingly mounted on the connecting rod body. The connecting rod body is connected with a center drill through a positioning structure in a quick-release mode. By arranging the positioning structure, during use, through mutual cooperation of the positioning structure, the connecting rod body and the center drill, the beneficial effects that after the center drill is installed in the connecting rod body, slipping of the connecting rod body and the center drill during drilling is avoided, and when the device is used and the center drill is abraded, the center drill is conveniently and rapidly replaced are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a connecting rod for a hole expander. Background Art

[0002] In drilling projects, especially in horizontal directional drilling construction, the reamer is one of the core components; its function is not only to expand the hole diameter, but also to cut and crush the soil and rock formations to form a hole diameter of appropriate size; the center drill is a cutting tool specially used for center hole processing on the end faces of parts such as shafts, mainly used for prefabrication of precise positioning and guiding twist drills for hole processing to reduce errors; the use of the center drill and the reamer together can not only significantly improve the processing accuracy and efficiency, but also effectively extend the tool life, reduce costs, and improve product quality and reliability;

[0003] The existing connection method between the reamer and the center drill is to set a bolt on the outer wall of the reamer, through which the bolt penetrates the outer wall of the reamer and contacts the center drill inserted in the reamer, thereby positioning the reamer and the center drill;

[0004] During the actual production drilling process, both will experience strong vibrations, which will further cause the bolts to loosen, resulting in looseness between the reamer and the center drill, and then causing slippage between the reamer and the center drill during the drilling process. Therefore, a connecting rod for the reamer is needed to improve the above problems. Utility Model Content

[0005] In order to solve the problem that the bolts are easily loosened during the drilling process when the existing reamer and the center drill are connected by bolts, thereby causing slippage between the reamer and the center drill, the utility model provides a connecting rod for the reamer to solve the above problem.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A connecting rod for a hole reamer, comprising a hole reamer, a connecting rod body, a center drill and a positioning structure, wherein the hole reamer is equipped with the connecting rod body, the connecting rod body is equipped with a positioning structure for a quick-detachable center drill, and the connecting rod body is quickly detachably connected to the center drill via the positioning structure;

[0008] A connecting ring is installed at the middle part of the side wall of the connecting rod body, and a spring is installed above the outer wall of the connecting ring;

[0009] A limiting ring is installed on the top of the spring, and a sliding cylinder is installed on the outer wall of the limiting ring;

[0010] A positioning ring is installed above the outer wall of the connecting rod body, a plug-in groove is provided on the top surface of the connecting rod body, and a through groove is provided on the outer side wall of the connecting rod body, and the through groove is connected with the plug-in groove;

[0011] A clamping bead is clamped in the through groove;

[0012] A flat groove is provided below the outer side wall of the center drill.

[0013] As a preferred solution of the utility model, a threaded connection frame is provided below the inner cavity of the reamer, a threaded groove is provided above the side wall of the connecting rod body, and the connecting rod body is threaded into the threaded connection frame on the reamer through the threaded groove.

[0014] As a preferred solution of the utility model, a center drill is slidably installed in the plug-in groove, and a clamping bead is clamped in the flat groove.

[0015] As a preferred solution of the utility model, the inner wall of the insertion groove and the outer wall of the center drill are in contact with each other.

[0016] As a preferred solution of the utility model, the inner wall of the limit ring contacts with a snap-in bead, and the top surface of the sliding cylinder contacts with the bottom surface of the positioning ring.

[0017] As a preferred solution of the utility model, the inner side of the limiting ring contacts the outer side wall of the connecting rod body, and the outer wall of the locking bead contacts the inner wall of the through groove.

[0018] As a preferred solution of the present invention, the connecting rod body is provided with various lengths, and the end of the connecting rod body is provided with different specifications.

[0019] Compared with the prior art, the utility model provides a positioning structure in a connecting rod for an expander. When in use, the positioning structure, the connecting rod body and the center drill cooperate with each other to achieve the benefit of preventing the connecting rod body and the center drill from slipping during drilling after the center drill is installed in the connecting rod body. This solves the problem that the existing expander and the center drill are connected by bolts, and the bolts are easily loosened during the drilling process, thereby causing slipping between the expander and the center drill.

[0020] Compared with the prior art, the utility model provides a positioning structure in a connecting rod for an expander, and through the cooperation between the positioning structure, the connecting rod body and the center drill, the benefit of facilitating quick replacement of the center drill when the center drill is worn during use of the device is achieved, and the problem of the device positioning the expander and the center drill by bolts, which makes it inconvenient to replace the center drill when the center drill is worn, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the exploded cross-sectional structure of the utility model;

[0024] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0025] Figure 5 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 6 For the utility model Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 7 For the utility model Figure 4 The enlarged structural diagram at C in the middle;

[0028] Figure 8 This is a schematic diagram of the structure of the connecting rod body of different lengths in the utility model;

[0029] Fig. 9 It is a schematic diagram of the structure of the connecting rod body of different specifications in the utility model.

[0030] In the figure: 1. reamer; 2. connecting rod body; 3. center drill; 4. flat groove; 5. positioning structure; 501. sliding cylinder; 502. spring; 503. connecting ring; 504. positioning ring; 505. limiting ring; 506. snap-in bead; 6. threaded connection frame; 7. through groove; 8. plug-in groove; 9. threaded groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] Example: See Figure 1-7 A connecting rod for a reamer shown in the figure comprises a reamer 1, a connecting rod body 2, a center drill 3 and a positioning structure 5. The reamer 1 is equipped with the connecting rod body 2, and the connecting rod body 2 is equipped with the positioning structure 5 for quickly disassembling the center drill 3. The connecting rod body 2 is quickly connected to the center drill 3 through the positioning structure 5.

[0033] The connecting rod body 2 can be provided with various sizes to adapt to different impact drills;

[0034] A connecting ring 503 is installed on the middle part of the side wall of the connecting rod body 2, and a spring 502 is installed on the outer wall of the connecting ring 503;

[0035] A limit ring 505 is installed on the top of the spring 502, and a sliding cylinder 501 is installed on the outer wall of the limit ring 505;

[0036] The limiting ring 505 is always in contact with the outer wall of the connecting rod body 2, ensuring the stability of the sliding cylinder 501 sliding on the outer wall of the connecting rod body 2;

[0037] A positioning ring 504 is installed on the outer wall of the connecting rod body 2, a plug-in groove 8 is provided on the top surface of the connecting rod body 2, and a through groove 7 is provided on the outer side wall of the connecting rod body 2, and the through groove 7 is connected to the plug-in groove 8;

[0038] The top surface of the sliding cylinder 501 contacts the bottom surface of the positioning ring 504;

[0039] The positioning ring 504 is used to limit the upward movement distance of the sliding cylinder 501 and plays a limiting role;

[0040] A locking bead 506 is locked in the through slot 7;

[0041] The card bead 506 is used to limit the movement of the center drill 3 and the connecting rod body 2 in the vertical direction during use;

[0042] A flat groove 4 is provided below the outer side wall of the center drill 3 .

[0043] In this embodiment, specific reference Figure 2 , Figure 3 and Figure 5 A threaded connection frame 6 is provided below the inner cavity of the reamer 1, a threaded groove 9 is provided above the side wall of the connecting rod body 2, and the connecting rod body 2 is threaded in the threaded connection frame 6 on the reamer 1 through the threaded groove 9;

[0044] The design of the thread groove 9 and the threaded connection frame 6 facilitates the rapid connection of the reamer 1 and the connecting rod body 2 together.

[0045] In this embodiment, specific reference Figure 4 and Figure 7 , a center drill 3 is slidably installed in the plug-in slot 8, and a snap-in bead 506 is snap-fitted in the flat slot 4;

[0046] The engaging bead 506 is engaged in both the flat groove 4 and the through groove 7 at the same time, so as to limit the position between the connecting rod body 2 and the center drill 3 .

[0047] In this embodiment, specific reference Figure 4 and Figure 7 , the inner wall of the insertion slot 8 and the outer wall of the center drill 3 are in contact with each other;

[0048] The inner wall of the inserting slot 8 contacts the outer wall of the center drill 3 to prevent the center drill 3 from shaking in the inserting slot 8 .

[0049] In this embodiment, specific reference Figure 1 - Figure 7 , the inner wall of the limiting ring 505 contacts the clamping bead 506;

[0050] The limiting ring 505 is used to limit the position of the snap-in bead 506 to ensure the stability of the snap-in bead 506 in the through groove 7 and the flat groove 4 .

[0051] In this embodiment, specific reference Figure 1 - Figure 7 The inner side of the limiting ring 505 contacts the outer side wall of the connecting rod body 2, and the outer wall of the clamping bead 506 contacts the inner wall of the through groove 7;

[0052] The through groove 7 is in close contact with the snap-in bead 506 to prevent the snap-in bead 506 from rolling randomly.

[0053] In this embodiment, specific reference Figure 1 , Figure 8 and Fig. 9 , the connecting rod body 2 is provided with various lengths, and the end of the connecting rod body 2 is provided with different specifications;

[0054] The connecting rod bodies 2 of different lengths enable the device to be used in different drilling environments, thus increasing the scope of application of the device;

[0055] The end of the connecting rod body 2 is provided with different specifications, so as to facilitate the installation of the connecting rod body 2 on different types of impact drills, thereby increasing the application range of the device.

[0056] A connecting rod for a hole expander during assembly;

[0057] First, the connecting rod body 2 and the reamer 1 are threadedly connected through the thread groove 9 and the threaded connection frame 6;

[0058] The second step is to pull the sliding cylinder 501 downward. When the sliding cylinder 501 moves downward, the spring 502 will be compressed. As the sliding cylinder 501 moves downward, the stop ring 505 in the sliding cylinder 501 will not contact the clamping bead 506. At this time, the through groove 7 will be exposed.

[0059] The third step is to insert the center drill 3 along the insertion groove 8. When the center drill 3 is inserted to the bottom of the insertion groove 8, the center drill 3 is rotated to connect the flat groove 4 below the side wall of the center drill 3 with the through groove 7, and the snap-in bead 506 is snap-fitted into the through groove 7 and the flat groove 4 at the same time.

[0060] Finally, the pressure on the sliding cylinder 501 is released. At this time, the limit ring 505 and the sliding cylinder 501 will be reset upward under the action of the spring 502. At this time, the top of the sliding cylinder 501 will contact the bottom surface of the positioning ring 504. At this time, the limit ring 505 will contact the clamping bead 506 to limit the horizontal movement of the clamping bead 506. At this time, the clamping bead 506 will tightly connect the center drill 3 and the connecting rod body 2 together;

[0061] After the center drill 3 is installed in the connecting rod body 2, the connecting rod body 2 and the center drill 3 are prevented from slipping during drilling, and the center drill 3 is easily replaced quickly when the device is in use and the center drill 3 is worn.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting rod for a reamer, comprising a reamer (1), a connecting rod body (2), a center drill (3) and a positioning structure (5), characterized in that: The reamer (1) is equipped with a connecting rod body (2), and a positioning structure (5) for quickly disassembling a center drill (3) is equipped with the connecting rod body (2). The connecting rod body (2) is quickly disassembled and connected to the center drill (3) via the positioning structure (5); A connecting ring (503) is installed on the middle part of the side wall of the connecting rod body (2), and a spring (502) is installed on the upper part of the outer wall of the connecting ring (503); A limiting ring (505) is installed on the top of the spring (502), and a sliding cylinder (501) is installed on the outer wall of the limiting ring (505); A positioning ring (504) is installed above the outer wall of the connecting rod body (2); a plug-in groove (8) is provided on the top surface of the connecting rod body (2); a through groove (7) is provided on the outer side wall of the connecting rod body (2); and the through groove (7) is connected to the plug-in groove (8); A locking bead (506) is locked in the through groove (7); A flat groove (4) is provided below the outer side wall of the center drill (3).

2. A connecting rod for a hole reamer according to claim 1, characterized in that: A threaded connection frame (6) is provided below the inner cavity of the reamer (1), a threaded groove (9) is provided above the side wall of the connecting rod body (2), and the connecting rod body (2) is threaded into the threaded connection frame (6) on the reamer (1) through the threaded groove (9).

3. A connecting rod for a hole reamer according to claim 1, characterized in that: A center drill (3) is slidably mounted in the insertion groove (8), and a clamping bead (506) is clamped in the flat groove (4).

4. A connecting rod for a hole reamer according to claim 3, characterized in that: The inner wall of the insertion groove (8) and the outer wall of the center drill (3) are in contact with each other.

5. A connecting rod for a hole reamer according to claim 1, characterized in that: The inner wall of the limiting ring (505) contacts a snap-in bead (506), and the top surface of the sliding cylinder (501) contacts the bottom surface of the positioning ring (504).

6. A connecting rod for a hole reamer according to claim 1, characterized in that: The inner side of the limiting ring (505) contacts the outer wall of the connecting rod body (2), and the outer wall of the locking bead (506) contacts the inner wall of the through groove (7).

7. A connecting rod for a hole reamer according to claim 1, characterized in that: The connecting rod body (2) is provided with a variety of lengths, and the end of the connecting rod body (2) is provided with different specifications.

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