A drive shaft docking device

Abstract

The present invention provides a drive shaft docking device, which includes an internal gear sleeve for fixedly connecting with a rolling mill roll and an external gear for connecting with a main drive shaft. An internal gear sleeve positioning block is axially extended along the outer side of the internal gear sleeve, and a notch is extended along one side wall of the internal gear sleeve positioning block. An external gear positioning block is arranged on the outer side of the external gear. When the external gear positioning block is attached to the internal gear sleeve positioning block and inserted into the bottom end of the notch, the external gear is docked and engaged with the internal gear sleeve. The present invention can align the tooth clearance through the drive shaft docking device before the drum-shaped teeth come into contact, and can realize the docking of the drum-shaped teeth under the condition of a "black light factory". The operation is simple and convenient. At the same time, the roll changing time of a three-roll pipe mill is shortened, and the number of employees is reduced while the efficiency is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical transmission, and particularly relates to a drive shaft docking device. Background Art

[0002] In mechanical transmission, the drum gear coupling is a commonly used coupling, and the drum gear coupling applied on a continuous tube rolling mill has its special functional requirements. When changing the rolls of the continuous tube rolling mill, it is required to achieve the axial movement of the coupling and the tooth engagement.

[0003] The three rolls of a three-roll continuous tube rolling mill are arranged at 120° to each other. Due to structural and space limitations, a support device cannot be provided at the shaft head near the roll side. Therefore, when changing the rolls, the main drive shaft can only be disconnected at the drum gear. However, due to the small tooth clearance of the drum gear, the docking of the drum gear is difficult. In actual operation, one person needs to operate the control console to make the motor rotate slowly, and another person observes the docking situation of the shaft on the shaft head side of the coupling. Since the lower drive shaft of the three-roll continuous tube rolling mill is located below the equipment, the light is often poor, which increases the operation difficulty for the operator. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a drive shaft docking device, which is used to solve the problem of difficult docking of drum gears in the prior art, can achieve the docking of drum gears in the case of a "black light factory", and at the same time shorten the roll changing time of the three-roll continuous tube rolling mill, reduce the number of employees and increase efficiency.

[0005] To achieve the above purpose and other related purposes, the present invention provides a drive shaft docking device, which includes an internal gear sleeve for fixedly connecting with a roll and an external gear for connecting with the main drive shaft. The head of the internal gear sleeve has an internal gear structure, the head of the external gear has an external gear structure. An internal gear sleeve positioning block is axially extended along the outside of the internal gear sleeve, and a notch is extended along one side wall of the internal gear sleeve positioning block. An external gear positioning block is arranged on the outside of the external gear. When the external gear positioning block is attached to the internal gear sleeve positioning block and inserted into the bottom end of the notch, the external gear is docked and engaged with the internal gear sleeve.

[0006] Further, the position of the internal gear sleeve positioning block corresponds to the tooth top of the internal gear structure, and correspondingly, the position of the external gear positioning block corresponds to the tooth root of the external gear structure; or, the position of the internal gear sleeve positioning block corresponds to the tooth root of the internal gear structure, and correspondingly, the position of the external gear positioning block corresponds to the tooth top of the external gear structure.

[0007] Further, when the rear end of the internal gear sleeve positioning block and the front end of the external gear positioning block are in the same plane, there is a set distance between the internal gear structure and the external gear structure.

[0008] Furthermore, the width of the open end of the notch is greater than the width of the external tooth positioning block, and the depth of the notch is greater than the displacement of the butt joint between the external teeth and the internal tooth sleeve.

[0009] Furthermore, the width of the bottom end of the notch is greater than the width of the open end of the notch.

[0010] Furthermore, the notch has a smooth transition from the bottom end to the open end.

[0011] Furthermore, a first transition member is sleeved on the external teeth, and the external tooth positioning block is arranged on the first transition member.

[0012] Furthermore, the first transition member is a sealing cover, and the sealing cover is connected to the external teeth through a positioning pin.

[0013] Furthermore, a second transition member is sleeved on the internal tooth sleeve, and the internal tooth sleeve positioning block and the notch are arranged on the second transition member.

[0014] Furthermore, the second transition member is a protective cover, and the protective cover is connected to the internal tooth sleeve through a positioning pin.

[0015] As described above, a drive shaft butt joint device of the present invention has the following beneficial effects:

[0016] By arranging an internal tooth sleeve positioning block on the outer side of the internal tooth sleeve and opening a notch along the positioning surface, and at the same time arranging a positioning block on the external teeth of the main drive shaft, before the drum-shaped teeth come into contact, the tooth clearance is aligned through this drive shaft butt joint device, and the butt joint of the drum-shaped teeth can be realized under the condition of a "black light factory", the operation is simple and convenient, and at the same time, the roll changing time of the three-roll continuous rolling tube mill is shortened, and the personnel are reduced and the efficiency is increased. Description of the Drawings

[0017] Figure 1 Structural schematic of the present invention Figure 1 (Before the internal tooth sleeve meshes with the external teeth);

[0018] Figure 2 is Figure 1 A-A sectional view of;

[0019] Figure 3 Structural schematic of the present invention Figure 2 (After the internal tooth sleeve meshes with the external teeth);

[0020] Figure 4 is Figure 3 A-A sectional view of.

[0021] Description of Part Numbers

[0022] 1 - Internal tooth sleeve; 11 - Internal tooth sleeve positioning block; 12 - Notch; 13 - Internal tooth structure;

[0023] 2 - External teeth; 21 - External tooth positioning block; 22 - External tooth structure;

[0024] 3 - Protective cover; 4 - Sealing cover. Detailed implementation manner

[0025] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0026] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present invention can be implemented.

[0027] Please refer to Figures 1 to 4 As shown, the present invention provides a drive shaft docking device, including an internal tooth sleeve 1 for fixedly connecting with a roll and an external tooth 2 for connecting with a main drive shaft. The head of the internal tooth sleeve 1 has an internal tooth structure 13, and the head of the external tooth 2 has an external tooth structure 22. An internal tooth sleeve positioning block 11 is arranged on the outer side of the internal tooth sleeve 1 along its axial direction, and a notch 12 is arranged along one side wall of the internal tooth sleeve positioning block 11. An external tooth positioning block 21 is arranged on the outer side of the external tooth 2. When the external tooth positioning block 21 is in contact with and inserted into the bottom end of the notch 12 after being attached to the internal tooth sleeve positioning block 11, the external tooth 2 is docked and engaged with the internal tooth sleeve 1.

[0028] Among them, the internal tooth structure 13 and the external tooth structure 22 adopt drum-shaped teeth. In order to enable the internal tooth sleeve 1 to accurately engage with the external tooth 2 in terms of tooth alignment, it is only necessary to rotate the external tooth positioning block 21 until it is attached to the positioning surface (the surface facing the external tooth positioning block 21) of the internal tooth positioning block. Then, move the axial position between the external tooth 2 and the internal tooth sleeve 1 until the external tooth positioning block 21 is inserted into the bottom end of the notch 12, and the external tooth 2 can be docked with the internal tooth sleeve 1. The operation is simple. Before the internal tooth sleeve 1 and the external tooth 2 come into contact, the tooth clearance can be aligned through this docking device, so as to realize the docking of drum-shaped teeth in the case of a "black light factory", while shortening the roll changing time of a three-roll continuous rolling tube mill and reducing staff and increasing efficiency.

[0029] Specifically, the position of the internal gear sleeve positioning block 11 corresponds to the tooth tip of the internal gear structure 13. Correspondingly, the position of the external gear positioning block 21 corresponds to the tooth root of the external gear structure 22; or, the position of the internal gear sleeve positioning block 11 corresponds to the tooth root of the internal gear structure 13. Correspondingly, the position of the external gear positioning block 21 corresponds to the tooth tip of the external gear structure 22. Taking the opposite faces of the internal gear sleeve positioning block 11 and the external gear positioning block 21 as the positioning surfaces of the internal gear sleeve 1 and the external gear 2 respectively, the positioning surface of the internal gear sleeve 1 is based on the center of the tooth tip of the internal gear structure 13 (in the same plane), and the positioning surface of the external gear 2 is based on the center of the tooth root of the external gear structure 22 (in the same plane). Through the relative positions of the internal gear sleeve positioning block 11 and the external gear positioning block 21, corresponding to the tooth engagement position of the internal gear structure 13 and the external gear structure 22, by making the outer internal gear sleeve positioning block 11 and the external gear positioning block 21 fit together, it can be ensured that the internal gear structure 13 of the internal gear sleeve 1 and the external gear structure 22 of the external gear 2 are centered with each other, and there is exactly a tooth side clearance between their tooth tips and tooth roots, so that even if the internal situation cannot be seen, the teeth can be easily aligned for subsequent docking of the two.

[0030] Moreover, when the rear end of the internal gear sleeve positioning block 11 and the front end of the external gear positioning block 21 are in the same plane, there is a set distance L1 between the internal gear structure 13 and the external gear structure 22. Specifically, through the relative displacement of the internal gear sleeve positioning block 11 and the external gear positioning block 21 in the axial direction, the distance between the internal gear structure 13 of the internal gear sleeve 1 and the external gear structure 22 of the external gear 2 can be determined, thus facilitating the grasping of the axial movement distance during the docking of the two. Here, when the rear end of the internal gear sleeve positioning block 11 is flush with the front end of the external gear positioning block 21 (in the same plane), the external gear positioning block 21 has not yet started to enter the notch 12, and it can be determined that the internal gear structure 13 and the external gear structure 22 are about to start the meshing process, providing a reference for the axial displacement of the operator; when continuing to move until the external gear positioning block 21 is inserted to the bottom end of the notch 12, the internal gear structure 13 of the internal gear sleeve 1 and the external gear structure 22 of the external gear 2 achieve docking and meshing.

[0031] To ensure that the external gear positioning block 21 can be inserted into the notch 12, the width L2 of the open end of the notch 12 needs to be greater than the width L3 of the external gear positioning block 21; to ensure that the axial movement distance during the docking of the internal gear sleeve 1 and the external gear 2 is satisfied and they can be fully docked, the depth L4 of the notch 12 needs to be greater than the displacement of the docking of the external gear 2 and the internal gear sleeve 1.

[0032] In addition, the width L5 of the bottom end of the notch 12 is greater than the width L2 of the open end of the notch 12, so that the external gear positioning block 21 will not affect the contact transmission of the crowned teeth.

[0033] The notch 12 has a smooth transition from the bottom end to the open end, facilitating the smooth sliding of the outer tooth positioning block 21 out of the notch 12 when it is necessary to separate the inner gear sleeve 1 and the outer teeth 2.

[0034] In order to facilitate the installation of the outer tooth positioning block 21 on the outer teeth 2, a first transition member is sleeved on the outer teeth 2, and the outer tooth positioning block 21 is arranged on the first transition member. The outer tooth positioning block 21 is installed on the outer teeth 2 through the first transition member. In this embodiment, the first transition member is a sealing cover 4, and the sealing cover 4 is connected to the outer teeth 2 through a positioning pin.

[0035] In order not to affect the strength of the crowned teeth and to facilitate the installation of the inner gear sleeve positioning block 11, a second transition member is sleeved on the inner gear sleeve 1, and the inner gear sleeve positioning block 11 and the notch 12 are arranged on the second transition member. The inner gear sleeve positioning block 11 is installed on the inner gear sleeve 1 through the second transition member. In this embodiment, the second transition member is a protective cover 3, and the protective cover 3 is connected to the inner gear sleeve 1 through a positioning pin and is fixedly positioned with the inner gear sleeve 1 through bolts.

[0036] When the present invention is specifically used, it is necessary to first move the rear end of the outer tooth positioning block 21 to be flush with the rear end of the inner gear sleeve positioning block 11 (in the same plane), and then it can be determined that the inner gear sleeve 1 and the outer teeth 2 are about to start the meshing process; at this time, rotate the outer tooth positioning block 21 to fit with the positioning surface of the inner gear positioning block, so as to ensure that the inner tooth structure 13 of the inner gear sleeve 1 and the outer tooth structure 22 of the outer teeth 2 can be accurately aligned; then move the axial position between the outer teeth 2 and the inner gear sleeve 1, and continue to make the inner gear sleeve 1 and the outer teeth 2 approach each other until the outer tooth positioning block 21 is inserted into the bottom end of the notch 12, then the outer teeth 2 and the inner gear sleeve 1 can be docked and meshed.

[0037] In summary, in a drive shaft docking device provided by an embodiment of the present invention, by arranging an inner gear sleeve positioning block corresponding to the tooth tip or tooth root on the outside of the roll inner gear sleeve, a notch is opened along the positioning surface, and at the same time, an outer tooth positioning block corresponding to the tooth root or tooth tip is arranged on the main drive shaft outer teeth. Before the crowned teeth come into contact, the tooth clearance is aligned through this drive shaft docking device, and the docking of the crowned teeth can be realized under the condition of a "black light factory", with simple and convenient operation. At the same time, the roll changing time of the three-roll pipe mill is shortened, and the number of employees is reduced and the efficiency is increased.

[0038] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A drive shaft docking device, characterized in that: It includes an internal gear sleeve for fixedly connecting with a roll and an external gear for connecting with a main transmission shaft. The head of the internal gear sleeve has an internal gear structure, and the head of the external gear has an external gear structure. An internal gear sleeve positioning block is arranged on the outer side of the internal gear sleeve and extends along its axial direction, and a notch is arranged along one side wall of the internal gear sleeve positioning block. An external gear positioning block is arranged on the outer side of the external gear. When the external gear positioning block abuts against the internal gear sleeve positioning block and is inserted into the bottom end of the notch, the external gear is butt-joined and engaged with the internal gear sleeve. Among them, the position of the internal gear sleeve positioning block corresponds to the tooth tip of the internal gear structure, and correspondingly, the position of the external gear positioning block corresponds to the tooth root of the external gear structure; or the position of the internal gear sleeve positioning block corresponds to the tooth root of the internal gear structure, and correspondingly, the position of the external gear positioning block corresponds to the tooth tip of the external gear structure; when the rear end of the internal gear sleeve positioning block and the front end of the external gear positioning block are in the same plane, there is a set distance between the internal gear structure and the external gear structure.

2. The drive shaft docking device according to claim 1, characterized in that: The width of the open end of the notch is greater than the width of the external gear positioning block, and the depth of the notch is greater than the displacement of the butt-joining of the external gear and the internal gear sleeve.

3. The drive shaft docking device according to claim 2, characterized in that: The width of the bottom end of the notch is greater than the width of the open end of the notch.

4. The drive shaft docking device according to claim 3, characterized in that: The notch smoothly transitions from the bottom end to the open end.

5. The drive shaft docking device according to claim 1, characterized in that: A first transition member is sleeved on the external gear, and the external gear positioning block is arranged on the first transition member.

6. The drive shaft docking device according to claim 5, characterized in that: The first transition member is a sealing cover, and the sealing cover is connected with the external gear through a positioning pin.

7. The drive shaft docking device according to claim 1, characterized in that: A second transition member is sleeved on the internal gear sleeve, and the internal gear sleeve positioning block and the notch are arranged on the second transition member.

8. The drive shaft docking device according to claim 7, characterized in that: The second transition member is a protective cover, and the protective cover is connected with the internal gear sleeve through a positioning pin.

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