Wear-resistant bolt

Abstract

The utility model discloses a wear-resistant bolt in the connecting piece field, which comprises a hexagonal head and a mounting column integrally formed at the bottom end of the hexagonal head, a quick-mounting screw sleeve is arranged on the periphery of the mounting column, a spring pad is arranged at the bottom end of the quick-mounting screw sleeve, the bottom end of the mounting column is in threaded connection with a cross-shaped connecting nail, and the cross-shaped connecting nail is in threaded connection with the mounting column. And the mounting column and the quick-mounting screw sleeve are mounted through the cross-shaped connecting nail. After the bolt is abraded, the cross-shaped connecting nail can be detached to achieve quick replacement operation of the quick-assembly thread sleeve, when the bolt is used for a non-standard connecting piece, quick repair operation of the bolt can be achieved by matching a plurality of quick-assembly thread sleeves, and the bolt is extremely convenient, efficient and high in practicability. And compared with an existing machining method that a tool withdrawal groove needs to be formed, the machining difficulty of the non-standard bolt is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of connecting pieces, in particular to wear-resistant bolts. Background Art

[0002] A bolt is a mechanical part, a cylindrical threaded fastener commonly used with a nut. A bolt is a type of fastener consisting of a hexagonal block and a screw rod, which needs to be matched with a nut to fasten and connect two parts with through holes. Most of the existing bolts are integrated structures, especially non-standard bolts. Once worn, they need to be replaced during use. However, the processing cost of non-standard bolts is high, and the process of processing non-standard bolts is relatively complicated. Therefore, those skilled in the art provide wear-resistant bolts to solve the problems raised in the above background technology. Utility Model Content

[0003] The purpose of the utility model is to provide a wear-resistant bolt to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A wear-resistant bolt comprises a hexagonal head and a mounting column integrally formed at the bottom end of the hexagonal head, a quick-release screw sleeve is arranged at the periphery of the mounting column, a spring pad is arranged at the bottom end of the quick-release screw sleeve, a cross connecting nail is connected to the bottom end of the mounting column through threads, and the mounting column and the quick-release screw sleeve are installed through the cross connecting nail.

[0006] As a further solution of the utility model: the inner hole of the quick-release screw sleeve is a square hole, and the outer shape of the mounting column is a square structure that matches the square hole.

[0007] As a further solution of the utility model: the joint between the hexagonal head and the mounting column is integrally formed with a transition arc, and the top inner hole of the quick-release screw sleeve is integrally formed with an avoidance chamfer.

[0008] As a further solution of the utility model: the bottom end of the mounting column is fixedly connected with a screw rubber sleeve, the screw rubber sleeve is connected to the cross connecting nail through a thread, and the threaded connection between the two has an interference fit of 0.02-0.03mm.

[0009] As a further solution of the utility model: the outer circumferential surface of the quick-release screw sleeve is a threaded structure, and the outer circumferential surface of the quick-release screw sleeve is plated with a 0.2-0.3 mm electroplated chromium layer.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model can realize the rapid replacement operation of the quick-release screw sleeve by removing the cross connecting nail after the bolt is worn. When it is used for non-standard connecting parts, the bolt can be quickly repaired by matching multiple quick-release screw sleeves. It is extremely convenient and efficient, and compared with the existing processing method that requires opening a back cutter groove, the processing difficulty of non-standard bolts is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0015] Figure 4 It is a structural diagram of the quick-install screw sleeve in the utility model.

[0016] In the figure: 1. Hexagonal head; 101. Transition arc; 2. Mounting column; 3. Quick-release screw sleeve; 301. Avoidance chamfer; 4. Cross connecting pin; 5. Spring washer; 6. Screw rubber sleeve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 to 4 In the embodiment of the utility model, the wear-resistant bolt includes a hexagonal head 1 and a mounting column 2 integrally formed at the bottom end of the hexagonal head 1, a quick-install screw sleeve 3 is arranged on the periphery of the mounting column 2, a spring pad 5 is arranged at the bottom end of the quick-install screw sleeve 3, a cross connecting nail 4 is connected to the bottom end of the mounting column 2 through threads, and the mounting column 2 and the quick-install screw sleeve 3 are installed through the cross connecting nail 4.

[0019] By adopting the above technical solution, after the bolt is worn, the quick-release screw sleeve 3 can be quickly replaced by removing the cross connecting nail 4. When used for non-standard connecting parts, the bolt can be quickly repaired by matching multiple quick-release screw sleeves 3. It is extremely convenient and efficient, and compared with the existing processing method that requires opening a back-off groove, the processing difficulty of non-standard bolts is greatly reduced.

[0020] Among them, the inner hole of the quick-install screw sleeve 3 is a square hole, and the outer shape of the mounting column 2 is a square structure that matches the square hole, which can realize the transmission of torque.

[0021] The joint between the hexagonal head 1 and the mounting column 2 is integrally formed with a transition arc 101 , and the top inner hole of the quick-release screw sleeve 3 is integrally formed with an avoidance chamfer 301 , which can ensure the reliability of the connection between the hexagonal head 1 and the mounting column 2 .

[0022] The bottom end of the mounting column 2 is fixedly connected with a screw rubber sleeve 6, which is connected to the cross connecting nail 4 by threads, and the threaded connection between the two has an interference fit of 0.02-0.03 mm.

[0023] In the above technical solution, the screw rubber sleeve 6 with an interference fit is arranged on the cross connecting nail 4 to prevent thread backlash, and cooperates with the spring washer 5 to make the connection of the cross connecting nail 4 more reliable.

[0024] The outer circumferential surface of the quick-install screw sleeve 3 is a threaded structure, and the outer circumferential surface of the quick-install screw sleeve 3 is plated with a 0.2-0.3 mm electroplated chromium layer, which can improve the overall wear resistance of the bolt.

[0025] In this embodiment, when in use, the wear-resistant bolt can be used in conjunction with a plurality of quick-install screw sleeves 3, so as to facilitate replacement at any time.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant bolt, comprising a hexagonal head (1) and a mounting column (2) integrally formed at the bottom end of the hexagonal head (1), characterized in that: A quick-install screw sleeve (3) is arranged on the periphery of the installation column (2), a spring pad (5) is arranged at the bottom end of the quick-install screw sleeve (3), a cross connecting nail (4) is connected to the bottom end of the installation column (2) through a thread, and the installation column (2) and the quick-install screw sleeve (3) are installed through the cross connecting nail (4).

2. The wear-resistant bolt according to claim 1, characterized in that: The inner hole of the quick-install screw sleeve (3) is a square hole, and the outer shape of the mounting column (2) is a square structure that matches the square hole.

3. The wear-resistant bolt according to claim 2, characterized in that: A transition arc (101) is integrally formed at the joint between the hexagonal head (1) and the mounting column (2), and an avoidance chamfer (301) is integrally formed at the top inner hole of the quick-install screw sleeve (3).

4. The wear-resistant bolt according to claim 3, characterized in that: The bottom end of the mounting column (2) is fixedly connected with a screw-type rubber sleeve (6), and the screw-type rubber sleeve (6) is connected to the cross connecting nail (4) via threads, and the threaded connection between the two has an interference fit of 0.02-0.03 mm.

5. The wear-resistant bolt according to claim 1, characterized in that: The outer circumferential surface of the quick-install screw sleeve (3) is a threaded structure, and the outer circumferential surface of the quick-install screw sleeve (3) is plated with a 0.2-0.3 mm thick electroplated chromium layer.

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