Rolling mill coupler end face tooth drawing tool

Abstract

The utility model relates to the technical field of drawing tools, in particular to a rolling mill coupler end face tooth drawing tool which comprises a fixing plate and a hydraulic jack arranged on the fixing plate, and the top end of the hydraulic jack abuts against a gearbox output shaft through a cushion block. During use, the hydraulic jack is started to enable the output end of the hydraulic jack to extend out, the cushion block pushes the side surface of the end of the output shaft of the gearbox, and the end face tooth ring is drawn by the fixed lead screw in the direction perpendicular to the surface of the end face tooth ring under the counter-acting force, so that the end face tooth ring can be rapidly pulled down from the output shaft of the gearbox. When the type of the coupling is changed, namely, the center distance of the end face tooth gear ring relative to the output shaft of the gearbox is changed, the installation position of the connecting block on the sleeving piece is adjusted according to the center distance, end face teeth of various types of gear couplings can be drawn, and the drawing device has high adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of drawing tools, in particular to a rolling mill coupling end face gear drawing tool. Background Art

[0002] The couplings used in steel rolling mill equipment need to withstand extremely high torque and impact loads. High-torque gear couplings are often used. The end teeth and the gearbox output shaft need to be installed with interference fit. When removing the end teeth, the existing technology usually welds a bracket on the gearbox output shaft, and pulls out the end teeth through the bracket and the jack.

[0003] For example, a Chinese patent with application number CN202222197409.X discloses a pulling tool for motor gears and bearings, comprising a frame, a lifting screw being threadedly connected to the center of the top plate of the frame, a push rod assembly being slidably arranged in the frame, the bottom end of the lifting screw pressing against the upper end surface of the push rod assembly, an open groove being opened in the center of the bottom plate of the frame, a pad having a center hole being clamped on the bottom plate of the frame where the open groove is located, the gear or bearing to be pulled out being placed on the upper surface of the pad, the push rod assembly comprising a push rod pressing against the motor shaft, which is pushed downward by the lifting screw, and the gear or bearing on the motor shaft is pulled out by pressing the motor shaft with the push rod in cooperation with the pad, without the need for hammering, which can not only avoid damage to the gears, bearings and motor shaft, but also avoid injuries to personnel during operation, the overall structure is simple and easy to use. However, in actual use, its adaptability is poor, that is, when the model of the gear coupling changes, the pulling tool needs to be re-adapted, and it is impossible to use one pulling tool to pull the end face teeth of various models of gear couplings. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a rolling mill coupling end face gear drawing tool to solve the technical problem in the prior art that the end face gears of various types of gear couplings cannot be drawn by a single drawing tool.

[0005] Based on the above purpose, the utility model provides a rolling mill coupling face gear pulling tool, including a fixed plate and a hydraulic jack arranged on the fixed plate, the top of the hydraulic jack is against the gear box output shaft through a pad, the face gear ring is installed on the gear box output shaft through a flat key, at least two pull rods are installed on the fixed plate, and the pulling tool also includes:

[0006] A sleeve member, wherein a avoidance hole is provided in the middle of the sleeve member, the cushion block passes through the avoidance hole, and at least two slide grooves are provided on the sleeve member at the side of the avoidance hole;

[0007] A connecting block, the connecting block is slidably arranged in the slide groove, the upper surface and the lower surface of the connecting block are both provided with threaded holes, the end of the pull rod is threadedly installed in the threaded hole on one side surface of the connecting block, and a fastening bolt is also arranged on the sleeve, the end of the fastening bolt extends into the slide groove and abuts against the connecting block;

[0008] A fixed screw rod, one end of which is threadedly mounted on the end face gear ring, and the other end of which is threadedly mounted in a threaded hole on the other side surface of the connecting block.

[0009] Furthermore, the hydraulic jack is mounted on the fixing plate via a fixing seat, and the fixing seat is fixed to the fixing plate via a fixing nut.

[0010] Furthermore, the pull rod is adjustably mounted on the fixing plate via an adjusting nut.

[0011] Furthermore, the sleeve is provided with a notch between adjacent connecting blocks.

[0012] Furthermore, limiting protrusions are arranged on both sides of the connection block, and the limiting protrusions are arranged to be offset from the notches in the horizontal direction.

[0013] Furthermore, a through opening is provided on the connecting block, and the through opening is arranged outside the sliding groove.

[0014] The beneficial effects of the utility model are as follows: when using the end face gear pulling tool of a rolling mill coupling of the utility model, the hydraulic jack is started to extend its output end, and the pad pushes the side surface of the end of the gear box output shaft. Under the reaction force, the fixed screw rod forms a pulling effect on the end face gear ring in the direction perpendicular to the surface of the end face gear ring, so that the end face gear ring can be quickly pulled off the output shaft of the gear box. When the coupling model changes, that is, the center distance of the end face gear ring relative to the output shaft of the gear box changes, it is only necessary to adjust the installation position of the connecting block on the sleeve according to the center distance. The end face gears of various models of gear couplings can be pulled, and the tool has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the working state of the utility model;

[0017] Figure 2 It is an assembly schematic diagram of a state in which two connecting blocks are arranged on the socket in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the connection block in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the socket connector in the utility model;

[0020] Figure 5 The utility model is an assembly diagram of a socket member in which three connection blocks are arranged.

[0021] The markings in the figure are:

[0022] 1. Fixing plate; 2. Hydraulic jack; 3. Spacer; 4. Gearbox output shaft; 5. Flat key; 6. Face gear ring; 7. Pull rod; 8. Socket; 9. Avoidance hole; 10. Slide groove; 11. Connecting block; 12. Fastening bolt; 13. Fixing screw rod; 14. Fixing seat; 15. Fixing nut; 16. Adjusting nut; 17. Limiting protrusion; 18. Through-hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] The first aspect of the utility model provides a rolling mill coupling end face tooth drawing tool, such as Figure 1-Figure 5As shown, it includes a fixed plate 1 and a hydraulic jack 2 arranged on the fixed plate 1, the top of the hydraulic jack 2 is against the gearbox output shaft 4 through a cushion block 3, the end face gear ring 6 is installed on the gearbox output shaft 4 through a flat key 5, at least two pull rods 7 are installed on the fixed plate 1, and the pulling tool also includes:

[0026] A sleeve member 8, a middle portion of which is provided with an avoidance hole 9, a cushion block 3 passes through the avoidance hole 9, and at least two slide grooves 10 are provided on the sleeve member 8 at the side of the avoidance hole 9;

[0027] The connecting block 11 is slidably arranged in the slide groove 10. The upper and lower surfaces of the connecting block 11 are provided with threaded holes. The end of the pull rod 7 is threadedly installed in the threaded hole on one side surface of the connecting block 11. The sleeve 8 is also provided with a fastening bolt 12. The end of the fastening bolt 12 extends into the slide groove 10 and abuts against the connecting block 11.

[0028] The screw rod 13 is fixed, and one end of the screw rod 13 is threadedly installed on the end face gear ring 6 , and the other end of the screw rod 13 is threadedly installed in the threaded hole on the other side surface of the connecting block 11 .

[0029] In this embodiment, for the process of pulling the face gear ring 6 that is interference-fitted on the gearbox output shaft 4, when in use, first install one end of the fixed screw 13 on the face gear ring 6, then install the connecting block 11 on the other end of the fixed screw 13, adjust the installation position of the connecting block 11 in the slide groove 10 according to the center distance of the face gear ring 6 relative to the gearbox output shaft 4, and then fix it with the fastening bolt 12;

[0030] Then, install one end of the tie rod 7 into the threaded hole at the other end of the connecting block 11, and then install the fixing plate 1 at the other end of the tie rod 7. Adjust the installation and fixing position of the fixing plate 1 by adjusting the nut 16, so that the pad 3 on the hydraulic jack 2 abuts against the output shaft 4 of the gear box;

[0031] After the installation preparation work is completed, start the hydraulic jack 2 to extend its output end, and the cushion block 3 pushes the side surface of the end of the gearbox output shaft 4. Under the reaction force, the fixed screw rod 13 forms a pulling effect on the end face gear ring 6 in the direction perpendicular to the surface of the end face gear ring 6, so that the end face gear ring 6 can be quickly pulled off the gearbox output shaft 4;

[0032] When the coupling model changes, that is, the center distance of the face gear ring 6 relative to the gearbox output shaft 4 changes, it is only necessary to adjust the installation position of the connecting block 11 on the sleeve 8 according to the center distance.

[0033] In this embodiment, if Figure 1As shown, the hydraulic jack 2 is mounted on the fixing plate 1 via a fixing seat 14 , and the fixing seat 14 is fixed to the fixing plate 1 via a fixing nut 15 , so that the applicable model of the hydraulic jack 2 can be easily replaced.

[0034] In this embodiment, if Figure 1 As shown, the pull rod 7 is adjustably mounted on the fixing plate 1 through an adjusting nut 16 to adapt to different installation positions of the face gear ring 6 on the gearbox output shaft 4.

[0035] In this embodiment, if Figure 2 , Figure 4 , Figure 5 As shown, the sleeve 8 is provided with gaps between adjacent connecting blocks 11, so that the overall weight of the sleeve 8 is greatly reduced, and the operator can use it easily.

[0036] In this embodiment, if Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, limiting protrusions 17 are provided on both sides of the connecting block 11, and the limiting protrusions 17 are offset from the notch in the horizontal direction. The limiting protrusions 17 can limit the connecting block 11 longitudinally in the slide groove 10, which is convenient for installation. Moreover, due to the offset from the notch, the influence on the overall structural strength of the socket 8 is reduced.

[0037] In addition, preferably, Figure 2 , Figure 3 , Figure 5 As shown, a through opening 18 is provided on the connecting block 11 , and the through opening 18 is disposed outside the slide slot 10 . A worker can hold the through opening 18 to disassemble and assemble the connecting block 11 .

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0039] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A rolling mill coupling face gear drawing tool, characterized in that: The invention comprises a fixing plate (1) and a hydraulic jack (2) arranged on the fixing plate (1), the top end of the hydraulic jack (2) abuts against a gearbox output shaft (4) via a cushion block (3), a face gear ring (6) is mounted on the gearbox output shaft (4) via a flat key (5), at least two pull rods (7) are mounted on the fixing plate (1), and the pulling tool further comprises: A sleeve member (8), wherein a relief hole (9) is provided in the middle of the sleeve member (8), the cushion block (3) passes through the relief hole (9), and at least two slide grooves (10) are provided on the sleeve member (8) on the side of the relief hole (9); A connecting block (11), the connecting block (11) is slidably arranged in the slide groove (10), the upper surface and the lower surface of the connecting block (11) are both provided with threaded holes, the end of the pull rod (7) is threadedly installed in the threaded hole on one side surface of the connecting block (11), and the sleeve (8) is also provided with a fastening bolt (12), the end of the fastening bolt (12) extends into the slide groove (10) and abuts against the connecting block (11); A fixed screw rod (13), one end of which is threadedly mounted on the end face gear ring (6), and the other end of which is threadedly mounted in a threaded hole on the other side surface of the connecting block (11).

2. A rolling mill coupling face gear drawing tool according to claim 1, characterized in that: The hydraulic jack (2) is mounted on the fixing plate (1) via a fixing seat (14), and the fixing seat (14) is fixed on the fixing plate (1) via a fixing nut (15).

3. A rolling mill coupling face gear drawing tool according to claim 1, characterized in that: The pull rod (7) is adjustably mounted on the fixing plate (1) via an adjusting nut (16).

4. A rolling mill coupling face gear drawing tool according to claim 1, characterized in that: The sleeve connector (8) is provided with a notch between adjacent connecting blocks (11).

5. A rolling mill coupling face gear drawing tool according to claim 4, characterized in that: Limiting protrusions (17) are arranged on both sides of the connection block (11), and the limiting protrusions (17) are arranged offset from the notches in the horizontal direction.

6. A rolling mill coupling face gear drawing tool according to claim 4, characterized in that: The connecting block (11) is provided with a through opening (18), and the through opening (18) is arranged outside the sliding groove (10).

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