Special device for fastening coupling connecting bolt of withdrawal and straightening machine of continuous casting machine

Abstract

The utility model relates to the technical field of fastening devices, in particular to a special device for fastening a coupling connecting bolt of a withdrawal and straightening machine of a continuous casting machine, comprising: a connecting rod, the connecting rod comprises an inner pipe and an outer pipe, one end of the inner pipe extends into the outer pipe from one end of the outer pipe, and the length of the inner pipe extending into the outer pipe is adjustable so as to adjust the length of the connecting rod; the fastening head is connected to the other end of the inner pipe, and a nut of a coupling connecting bolt can be clamped in the fastening head; the fastening rocker arm is connected to the other end of the outer pipe so as to drive the connecting rod to rotate and drive the nut clamped in the fastening head to rotate, and therefore the coupling connecting bolt is screwed or unscrewed; the locking mechanism is arranged on the outer pipe and used for locking the inner pipe in the outer pipe. By adjusting the length of the connecting rod, replacement and fastening of connecting bolts at different depths in a narrow space can be met.

Description

Technical Field

[0001] The present disclosure relates to the technical field of fastening devices, and particularly to a special device for fastening the coupling connecting bolts of a straightening machine of a continuous casting machine. Background Art

[0002] The main function of the straightening machine system of a continuous casting machine is to smoothly pull out the solidified billet from the segment. It mainly consists of a motor, a speed reducer, a cross head, a coupling, etc. During the process of pulling the billet, the straightening machine system bears a large torque. In addition, due to the corrosion of the water vapor system on the straightening machine system, the coupling connecting bolts of the straightening machine system often deform, loosen, and break. It is necessary to regularly tighten and replace the loose and damaged connecting bolts of the straightening machine system through a fastening device.

[0003] For example, the prior art proposes a steel pole tower bottom bolt fastener (CN 202668449 U), which includes a column. A fastening rod is horizontally inserted through the upper part of the column. The lower end of the column is welded with a nut fastening sleeve that cooperates with the nut on the bottom bolt through three flat irons. Anti - detachment handles are provided at both ends of the fastening rod. The column is an iron pipe with a length of 50 - 60 cm. The distance between the fastening rod and the top of the column is 5 - 10 cm. This utility model uses the nut fastening sleeve that cooperates with the nut. By operating the fastening rod, the bottom bolt can be easily tightened. It is simple, safe, convenient, and fast to use, ensuring the erection speed and quality of the steel pole tower, greatly improving work efficiency, and having the advantage of being light and easy to carry.

[0004] When it comes to the fastening or replacement operation of the coupling connecting bolts of the straightening machine system, due to the limited and narrow space position, and the different depths of the narrow space, it is not easy to use conventional tools to replace and fasten the bolts. Based on this, a special fastening device that can meet the replacement and fastening operations of the coupling connecting bolts of the straightening machine system at different depths in a narrow space is a problem that needs to be considered by those skilled in the art. Summary of the Utility Model

[0005] One technical problem to be solved by the present disclosure is the problem of the special fastening device that can meet the fastening operation of the coupling connecting bolts of the straightening machine system at different depths in a narrow space mentioned above.

[0006] To solve the above technical problems, an embodiment of the present disclosure provides a special device for tightening the coupling connecting bolts of a straightening machine of a continuous casting machine, including: a connecting rod, the connecting rod includes an inner tube and an outer tube, one end of the inner tube extends into the outer tube from one end of the outer tube, and the length extending into the outer tube is adjustable to adjust the length of the connecting rod; a fastening head, the fastening head is connected to the other end of the inner tube and can snap the nut of the coupling connecting bolt therein; a fastening rocker arm, the fastening rocker arm is connected to the other end of the outer tube to drive the connecting rod to rotate and drive the nut snapped in the fastening head to rotate, so as to tighten or loosen the coupling connecting bolt; a locking mechanism, the locking mechanism is arranged on the outer tube to lock the inner tube in the outer tube.

[0007] In some embodiments, a connecting piece is arranged at the other end of the outer tube, and one end of the fastening rocker arm passes through a through hole opened in the connecting piece and is slidably connected to the connecting piece, and the axial direction of the through hole is perpendicular to the length direction of the connecting rod.

[0008] In some embodiments, plugs are arranged at both ends of the fastening rocker arm to prevent the fastening rocker arm from slipping off the connecting piece.

[0009] In some embodiments, the fastening rocker arm is coated with an elastic material.

[0010] In some embodiments, a groove is opened on the inner wall of the outer tube, the groove extends along the length direction of the outer tube, a rib is arranged on the outer wall of the inner tube, the rib extends along the length direction of the inner tube, and the rib is slidably arranged in the groove.

[0011] In some embodiments, a marking line is arranged on the inner tube to display the length of the inner tube extending into the outer tube.

[0012] In some embodiments, the locking mechanism includes a locking bolt, and the locking bolt passes through a threaded hole opened on the side wall of the outer tube and abuts against the outer wall of the inner tube.

[0013] In some embodiments, there are multiple locking bolts, and the multiple locking bolts respectively pass through threaded holes opened at different positions on the side wall of the outer tube and abut against the outer wall of the inner tube.

[0014] In some embodiments, the fastening head is detachably connected to the other end of the inner tube.

[0015] In some embodiments, the plug is coated with a rubber sleeve.

[0016] According to the above technical solution, the present disclosure provides a special device for tightening the coupling bolts of a straightening machine of a continuous casting machine. The tightening head can be extended into a narrow space through a connecting rod, and the connecting bolt clamped in the tightening head is rotated by the drive of a tightening rocker arm, so as to realize the replacement or tightening of the connecting bolt. At the same time, by adjusting the length of the inner tube extending into the outer tube, the length of the connecting rod is adjusted, and the replacement and tightening of the connecting bolts at different depths in the narrow space can be satisfied; by moving the tightening rocker arm in the through hole opened on the connecting piece, the length of the power arm for driving the connecting rod to rotate can be adjusted, thus facilitating the use of the staff; through the cooperation of the convex strip and the groove, the stable sliding of the inner tube in the outer tube is ensured, and the problem of eccentricity and displacement between the two during the sliding process is avoided; the staff is protected by the elastic material and the rubber sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0018] Figure 1 is a schematic diagram of the special tightening device according to an embodiment of the present disclosure;

[0019] Figure 2 is a front view of the special tightening device according to an embodiment of the present disclosure;

[0020] Figure 3 is a cross-sectional view of the connecting rod according to an embodiment of the present disclosure;

[0021] Figure 4 is a cross-sectional view of the outer tube according to an embodiment of the present disclosure;

[0022] Figure 5 is a cross-sectional view of the inner tube according to an embodiment of the present disclosure;

[0023] Figure 6 is Figure 2 the longitudinal sectional view of Node A of

[0024] Figure 7 is Figure 2 the transverse sectional view of Node B of

[0025] Figure 8 is Figure 2 the longitudinal sectional view of Node C of

[0026] Description of the reference numerals:

[0027] 1. Connecting rod; 2. Tightening rocker arm; 3. Connecting piece; 4. Tightening head; 5. Inner tube; 7. Outer tube; 8. Plug; 9. Groove; 10. Rib; 11. Locking bolt; 12. Threaded hole; 13. First connecting plate; 14. Second connecting plate; 15. High-strength bolt. Specific embodiments

[0028] The following further describes in detail the embodiments of the present disclosure in conjunction with the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0029] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0030] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0031] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and the like mean that the elements before the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements.

[0032] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0033] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in, for example, a general dictionary should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0034] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0035] As mentioned in the above background art, the coupling connection bolts of the tension leveller system often become deformed, loose, or broken, and it is necessary to regularly tighten and replace the loose and damaged connection bolts of the tension leveller system through a fastening device. However, when tightening or replacing the coupling connection bolts of the tension leveller system, due to the limited and narrow space position and the varying depths of the narrow space, it is not easy to use conventional tools to replace and tighten the bolts. Therefore, the inventors of the present application provide a special device for tightening the coupling connection bolts of a continuous casting machine tension leveller in one or more embodiments. The fastening head can be extended into the narrow space through a connecting rod, and the connection bolt clamped in the fastening head is rotated by the drive of a fastening rocker arm, thereby realizing the replacement or tightening of the connection bolt. At the same time, by adjusting the length of the inner tube extending into the outer tube, the length of the connecting rod can be adjusted to meet the replacement and tightening of the connection bolts at different depths in the narrow space. Thus, one or more problems in the prior art are solved.

[0036] In response to the above-mentioned technical problems, the present utility model provides a special device for tightening the coupling connection bolts of a continuous casting machine tension leveller, as Figures 1 - 3As shown in the figure, it includes: a connecting rod 1, the connecting rod 1 includes an inner tube 5 and an outer tube 7. One end of the inner tube 5 extends into the outer tube 7 from one end of the outer tube 7, and the length extending into the outer tube 7 is adjustable to adjust the length of the connecting rod 1; a fastening head 4, the fastening head 4 is connected to the other end of the inner tube 5 and can snap the nut of the coupling connecting bolt therein; a fastening rocker arm 2, the fastening rocker arm 2 is connected to the other end of the outer tube 7 to drive the connecting rod 1 to rotate and drive the nut snapped in the fastening head 4 to rotate, so as to tighten or loosen the coupling connecting bolt; a locking mechanism, the locking mechanism is arranged on the outer tube 7 to lock the inner tube 5 in the outer tube 7.

[0037] Specifically, according to the position of the connecting bolt at different depths in the narrow space, the length of the inner tube 5 extending into the outer tube 7 is adjusted, so as to adjust the length of the connecting rod 1, so that the nut of the connecting bolt can be snapped in the fastening head 4 (the bolt fastening head 4 is a prior art, and its structural form will not be described in detail here). After the length adjustment of the connecting rod 1 is completed, the inner tube 5 and the outer tube 7 are locked by the locking mechanism to prevent relative movement between the two. Then the staff drives the fastening rocker arm 2 to rotate, so as to drive the connecting rod 1 and the fastening head 4 to rotate, so as to realize the replacement or tightening of the connecting bolt. Further, both the inner tube 5 and the outer tube 7 can be made of steel pipes, and the length direction of the fastening rocker arm 2 is perpendicular to the length direction of the connecting rod 1.

[0038] Compared with the prior art, for a special device for tightening the coupling connecting bolt of the straightener of a continuous casting machine in the present application, the fastening head 4 can be extended into the narrow space through the connecting rod 1, and the connecting bolt snapped in the fastening head 4 is rotated by the drive of the fastening rocker arm 2, so as to realize the replacement or tightening of the connecting bolt. At the same time, by adjusting the length of the inner tube 5 extending into the outer tube 7, the length of the connecting rod 1 is adjusted, which can meet the replacement and tightening of the connecting bolts at different depths in the narrow space.

[0039] In some embodiments, as Figure 1 、 Figure 2 and Figure 7 shown, a connecting member 3 is arranged on the other end of the outer tube 7. One end of the fastening rocker arm 2 passes through a through hole opened in the connection and is slidably connected to the connecting member 3, and the axial direction of the through hole is perpendicular to the length direction of the connecting rod 1. By moving the fastening rocker arm 2 in the through hole opened in the connecting member 3, the length of the power arm for driving the connecting rod 1 to rotate can be adjusted, which is convenient for the staff to use. Specifically, the connecting member 3 can be connected to the end of the outer tube 7 by welding, and the fastening rocker arm 2 can be a straight steel pipe, and the cross-sectional diameter thereof is smaller than the aperture of the through hole, so that the fastening rocker arm 2 can be inserted into the through hole.

[0040] In some embodiments, as Figure 1 and Figure 2As shown, plug heads 8 are provided at both ends of the fastening rocker arm 2 to prevent the fastening rocker arm 2 from slipping off the connecting member 3. The problem of the fastening rocker arm 2 slipping off the connecting member 3 is prevented by the plug heads 8, ensuring production safety. Specifically, the plug head 8 is detachably connected to the end of the fastening rocker arm 2. The plug head 8 includes a small-diameter end and a large-diameter end. The small-diameter end can be inserted into the end of the fastening rocker arm 2 (using a straight steel pipe), and the cross-sectional dimension of the large-diameter end is larger than the size of the through hole to avoid the problem of the fastening rocker arm 2 slipping out of the through hole. By detachably connecting the plug head 8 to the fastening rocker arm 2, it is convenient for the storage of the special fastening device.

[0041] In some embodiments, an elastic material (not shown in the figure) is coated on the fastening rocker arm 2. By coating the elastic material on the fastening handle, it protects the staff and prevents the problem that the hands of the staff are scratched when rotating the fastening rocker arm 2.

[0042] In some embodiments, as Figures 3 - 5 shown, a groove 9 is formed on the inner wall of the outer tube 7. The groove 9 extends along the length direction of the outer tube 7. A rib 10 is provided on the outer wall of the inner tube 5. The rib 10 extends along the length direction of the inner tube 5. The rib 10 is slidably arranged in the groove 9. Through the cooperation of the rib 10 and the groove 9, it is ensured that the inner tube 5 slides stably in the outer tube 7, avoiding the problem of eccentricity and displacement between the two during the sliding process. Further, there may be multiple grooves 9, and the multiple grooves 9 are circumferentially distributed on the inner wall of the outer tube 7. There are also multiple ribs 10, and the multiple ribs 10 are axially distributed on the outer wall of the inner tube 5. One rib 10 is slidably arranged in one groove 9.

[0043] In some embodiments, a marking line (not shown in the figure) is provided on the inner tube 5 to display the length of the inner tube 5 extending into the outer tube 7. Through the marking line, the staff can accurately know the length of the inner tube 5 extending into the outer tube 7, which is convenient for the staff to use.

[0044] In some embodiments, Figure 2 and Figure 6 shown, the locking mechanism includes a locking bolt 11. The locking bolt 11 passes through a threaded hole 12 formed on the side wall of the outer tube 7 and abuts against the outer wall of the inner tube 5. The locking function of the locking mechanism is realized through the locking bolt 11.

[0045] In some embodiments, Figure 2 shown, there are multiple locking bolts 11. The multiple locking bolts 11 respectively pass through threaded holes 12 formed at different positions on the side wall of the outer tube 7 and abut against the outer wall of the inner tube 5. Specifically, the multiple threaded holes 12 are arranged at equal intervals along the circumferential and axial directions of the outer tube 7. The inner tube 5 and the outer tube 7 can be firmly locked together through the multiple locking bolts 11.

[0046] In some embodiments, the fastening head 4 is detachably connected to the other end of the inner tube 5. Through the detachable connection method, fastening heads 4 of different specifications can be connected to the end of the inner tube 5, so that the replacement and fastening of different connecting bolts can be realized, and the application range of the special fastening device is improved. Specifically, as Figure 8 shown, a first connecting plate 13 is provided at the end of the inner tube 5, and a second connecting plate 14 is provided at the bottom of the fastening head 4. Through holes are formed in both the first connecting plate 13 and the second connecting plate 14. The first connecting plate 13 and the second connecting plate 14 are butted so that the through holes on both of them are in communication. The fastening head 4 is connected to the end of the inner tube 5 by inserting a high-strength bolt 15 into the through holes. Further, the second connecting plates 14 of the fastening heads 4 of different specifications have the same specifications, and the sizes and positions of the through holes formed therein are the same, so as to be capable of being connected in a matching manner with the first connecting plate 13.

[0047] In some embodiments, a rubber sleeve (not shown in the figure) is covered on the plug 8. The rubber sleeve protects the staff and avoids the problem that the hands of the staff are scratched or abraded by the plug 8.

[0048] In summary, compared with the prior art, the present disclosure provides a special device for fastening the coupling connecting bolts of a straightening machine of a continuous casting machine. The fastening head 4 can be extended into a narrow space through the connecting rod 1, and the connecting bolt clamped in the fastening head 4 is rotated by the drive of the fastening rocker arm 2, so as to realize the replacement or fastening of the connecting bolt. At the same time, by adjusting the length of the inner tube 5 extending into the outer tube 7, the length of the connecting rod 1 is adjusted, and the replacement and fastening of the connecting bolts at different depths in the narrow space can be satisfied; by moving the fastening rocker arm 2 in the through hole formed in the connecting member 3, the length of the power arm for driving the connecting rod 1 to rotate can be adjusted, thus facilitating the use by the staff; through the cooperation of the convex strip 10 and the groove 9, the stable sliding of the inner tube 5 in the outer tube 7 is ensured, and the problem of eccentricity and deviation between the two during the sliding process is avoided; the staff is protected by the elastic material and the rubber sleeve.

[0049] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can clearly understand how to implement the technical solutions disclosed here based on the above description.

[0050] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A special device for fastening coupling connection bolts of a continuous casting machine straightening machine, characterized in that: include: A connecting rod (1), the connecting rod (1) comprising an inner tube (5) and an outer tube (7), one end of the inner tube (5) extending from one end of the outer tube (7) into the outer tube (7), and the length of the inner tube (5) extending into the outer tube (7) is adjustable so as to adjust the length of the connecting rod (1); A fastening head (4), the fastening head (4) being connected to the other end of the inner tube (5) and capable of clamping a nut of the coupling connecting bolt therein; A tightening rocker arm (2), the tightening rocker arm (2) being connected to the other end of the outer tube (7) to drive the connecting rod (1) to rotate and drive the nut clamped in the tightening head (4) to rotate, thereby tightening or loosening the coupling connecting bolt; and A locking mechanism is provided on the outer tube (7) and is used to lock the inner tube (5) inside the outer tube (7).

2. The special device for fastening coupling connection bolts of a continuous casting machine straightening machine according to claim 1, characterized in that: A connecting piece (3) is provided on the other end of the outer tube (7), and one end of the fastening rocker arm (2) is slidably connected to the connecting piece (3) through a through hole provided on the connecting piece, wherein the axial direction of the through hole is perpendicular to the length direction of the connecting rod (1).

3. The special device for fastening coupling connecting bolts of a continuous casting machine straightening machine according to claim 2, characterized in that: Plugs (8) are provided on both ends of the fastening rocker arm (2) to prevent the fastening rocker arm (2) from sliding off the connecting piece (3).

4. The special device for fastening coupling connecting bolts of a continuous casting machine straightening machine according to claim 1, characterized in that: The fastening rocker arm (2) is coated with elastic material.

5. The special device for fastening coupling connection bolts of a continuous casting machine straightening machine according to claim 4, characterized in that: A groove (9) is provided on the inner wall of the outer tube (7), and the groove (9) extends along the length direction of the outer tube (7). A convex strip (10) is provided on the outer wall of the inner tube (5), and the convex strip (10) extends along the length direction of the inner tube (5). The convex strip (10) is slidably arranged in the groove (9).

6. The special device for fastening coupling connection bolts of a continuous casting machine straightening machine according to claim 1, characterized in that: The inner tube (5) is provided with a marking line for indicating the length of the inner tube (5) extending into the outer tube (7).

7. The special device for fastening coupling connecting bolts of a continuous casting machine straightening machine according to claim 1, characterized in that: The locking mechanism comprises a locking bolt (11), wherein the locking bolt (11) passes through a threaded hole (12) provided on the side wall of the outer tube (7) and abuts against the outer wall of the inner tube (5).

8. The special device for fastening coupling connecting bolts of a continuous casting machine straightening machine according to claim 7, characterized in that: The locking bolts (11) include a plurality of locking bolts (11), which respectively pass through the threaded holes (12) provided at different positions on the side wall of the outer tube (7) to abut against the outer wall of the inner tube (5).

9. The special device for fastening coupling connection bolts of a continuous casting machine straightening machine according to claim 1, characterized in that: The fastening head (4) is detachably connected to the other end of the inner tube (5).

10. The special device for fastening coupling connecting bolts of a continuous casting machine straightening machine according to claim 3, characterized in that: The plug (8) is covered with a rubber sleeve.

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