Cross-shaped connecting piece

Abstract

The utility model discloses a cross-shaped connecting piece which comprises a first half buckle body and a second half buckle body which can be buckled and locked with each other, and a first steel cable groove and a second steel cable groove which are crossed with each other and used for a steel cable to penetrate through and to be fixed with each other are oppositely formed in the inner surface of the first half buckle body and the inner surface of the second half buckle body respectively. An anti-skid fastening structure is formed on the surface of the first steel cable groove and / or the second steel cable groove. The utility model has the advantages that: 1) the fastening strength is high, the structure is simple and the installation is simple; (2) the device can be used for fixing heavy steel cables of the high-energy-level protective net, and the failure condition of the high-energy-level protective net is effectively avoided; and (3) by adopting the telescopic convex tooth structure, the contact area of the steel cable groove and the steel cable is increased, and the risk that the steel cable is invalid due to plastic deformation caused by excessive stress is avoided.

Description

Technical Field

[0001] The utility model relates to a fastening device, in particular to a steel cable fastening device. Background Art

[0002] my country has many mountains and hills, and the geological conditions are complex. Many roads are characterized by being close to mountains and valleys, with high slopes and narrow roads. In addition, geological disasters frequently occur on mountain slopes, among which rockfall is the main form of geological disasters. Rockfall on slopes poses a serious threat to people's traffic safety and the safety of life and property. With the increase in the operating years of mountain roads and the frequent occurrence of extreme weather, the impact energy level and frequency of dangerous rock collapse disasters have increased, and the existing conventional protection net protection level can no longer meet the needs of highway operation protection. The high-energy protection net has strong adaptability to the impact load and accumulation load of dangerous rock falls, and perfectly solves the problem of conventional passive protection nets failing due to factors such as the large impact capacity of rockfall in steep mountainous areas. It can be used for rockfall protection of roads or other infrastructure in steep mountainous areas, providing effective protection for the safety of life and property.

[0003] In high-energy protection nets, the steel cables used are thicker and heavier. The conventional cross buckle structure is relatively weak and cannot provide effective fastening force, which will have a significant negative impact on the protective ability of the protection net. In addition, large hydraulic equipment is required during the pressing process, which is cumbersome and difficult to operate. It is impossible to install it quickly and conveniently on the construction site. Therefore, it is very necessary to study a new type of cross connector. Utility Model Content

[0004] In order to improve the fastening ability of the connecting piece to the steel cable of the high-energy level protection net and improve the adaptability and installation convenience of the connecting piece, the utility model provides a cross connecting piece.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a cross connector, comprising a first half buckle body and a second half buckle body that can be interlocked and locked, the inner surfaces of the first half buckle body and the second half buckle body are respectively provided with first and second steel cable grooves that cross each other and are used for the steel cables to pass through and fix each other; the surface of the first steel cable groove and / or the second steel cable groove is formed with an anti-slip fastening structure. The above steel cable groove can adopt a common shape in the art, such as a common arc groove.

[0006] As a further improvement of the present invention, the anti-slip fastening structure is a retractable protruding tooth. The fastening of the steel cable in the present invention is mainly achieved by the pressure applied to the steel cable when the half buckle body is locked and the interaction force between the two crossed steel cables. Under actual working conditions, due to the uneven surface of the steel cable (such as steel strands), the actual contact area with the steel cable groove is very small, which is easy to slip. If the locking force is significantly increased to prevent sliding, the steel cable will be squeezed and deformed under the action of external force, which undoubtedly increases the risk of plastic deformation and failure of the steel cable. For this reason, we propose the retractable protruding tooth structure of this solution.

[0007] The above-mentioned retractable protruding teeth can specifically adopt the following structural arrangement: comprising a protruding tooth retractable groove opened on the surface of the first steel cable groove and / or the second steel cable groove, the protruding tooth end being connected to the protruding tooth retractable groove through an elastic component, so that the protruding tooth end can retract and slide in the protruding tooth retractable groove through the elastic deformation of the elastic component.

[0008] The retractable tooth structure of the present invention can fit tightly against the surface of the steel cable when the half-buckle is locked. At the same time, the extrusion pressure on the steel cable can be adjusted according to the actual working conditions by designing the strength of the elastic component, so that the extrusion pressure on the steel cable can be dynamically adjusted without causing plastic deformation of the steel cable. The present invention not only significantly increases the contact area between the steel cable groove and the surface of the steel cable, but also avoids the risk of failure of the steel cable due to plastic deformation caused by excessive stress.

[0009] The elastic member mentioned above may be an elastic member commonly used in the art, such as a spring.

[0010] In addition to the above-mentioned anti-slip fastening structure, other anti-slip fastening structures may also be used, for example, other anti-slip fastening structures are frosted layers formed on the surface of the first steel cable groove and / or the second steel cable groove, but the effects of other anti-slip fastening structures are not as good as the above-mentioned retractable tooth structure.

[0011] The first half buckle body and the second half buckle body are fastened in a manner of fastening by a bolt structure, for example, the bolt structure includes at least two through screw holes penetrating the first half buckle body, and the second half buckle body is provided with a locking screw hole matching the through screw holes, and the bolt can pass through the through screw hole and connect with the locking screw hole to achieve the buckling and locking of the first half buckle body and the second half buckle body.

[0012] The outer side of the through screw hole is provided with a countersunk hole. This solution makes the appearance cleaner and neater, and has a certain anti-theft capability after the new cross connector is installed and tightened.

[0013] As a further improvement of the present invention, the first steel cable groove and the second steel cable groove have different widths. This solution is applicable to working conditions where the diameters of the two steel cables are different, further improving the adaptability of the present invention.

[0014] The beneficial effects of the utility model are: 1) The utility model fastens the steel cable through the rectangular fastener, and then uses bolts to strengthen and fix the steel cable as a whole, with high fastening strength, simple structure, easy operation and no need for other auxiliary equipment for installation. 2) It has high adaptability to working conditions and can be used on the thick and heavy steel cables of high-energy-level protective nets, which improves the overall mechanical properties of the connector, avoids the situation where conventional buckles are not suitable for high-energy-level protective nets and fail, and reduces safety hazards. 3) By adopting a retractable protruding tooth structure, it can fit tightly on the surface of the steel cable when the half-buckle body is locked. At the same time, the extrusion force on the steel cable can be adjusted according to the actual working conditions by designing the strength of the elastic component, so that the extrusion force on the steel cable can be dynamically adjusted, so as not to cause plastic deformation of the steel cable; this solution not only significantly increases the contact area between the steel cable groove and the steel cable surface, but also avoids the risk of failure of the steel cable due to plastic deformation caused by excessive force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the first half of the buckle body structure.

[0017] Figure 3 It is a schematic diagram of the second half buckle body structure.

[0018] Figure 4 It is a schematic diagram of the inner surface structure of the second steel cable groove provided with retractable protruding teeth in a specific implementation manner.

[0019] Figure 5 It is a schematic diagram of the retractable tooth structure in a specific implementation manner.

[0020] Figure 6 Schematic diagram of the structure of the cross connector with different cable groove widths in the second embodiment.

[0021] Markings in the figure are: 1-first half buckle body, 101-first steel cable groove, 102-through screw hole, 2-second half buckle body, 201-second steel cable groove, 202-locking screw hole, 3-retractable protruding tooth, 301-protruding tooth end, 302-elastic component, 303-protruding tooth telescopic groove, 4-bolt. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Embodiment 1:

[0024] like Figure 1 to Figure 5As shown, a cross connector of the utility model comprises a first half buckle body 1 and a second half buckle body 2 which are buckled and locked with each other through a bolt structure, and the first half buckle body 1 and the second half buckle body 2 have first and second steel cable grooves 101 and 201 for the steel cables to pass through and fix respectively on their inner surfaces, and the steel cables form a cross after passing through the first and second steel cable grooves 101 and 201, and the steel cables generate mutual squeezing force when the first half buckle body 1 and the second half buckle body 2 are buckled and locked to achieve mutual fixation. The above steel cable grooves are all arc-shaped grooves.

[0025] The above-mentioned bolt structure includes four through screw holes 102 passing through the first half buckle body 1, and the second half buckle body 2 is provided with a locking screw hole 202 matching the through screw hole 102. When installing the cross connector, the bolt 4 is passed through the through screw hole 102 and connected with the locking screw hole 202 to achieve the buckling and locking of the first half buckle body 1 and the second half buckle body 2.

[0026] The first steel cable groove 101 and / or the second steel cable groove 201 are provided with retractable protruding teeth 3. The structure of the retractable protruding teeth 3 includes protruding tooth retractable grooves 303 opened on the surfaces of the first steel cable groove 101 and the second steel cable groove 201. The protruding tooth end 301 is connected to the protruding tooth retractable grooves 303 through an elastic member 302, so that the protruding tooth end 301 can be retracted and slid in the protruding tooth retractable grooves 303 through the elastic deformation of the elastic member 302. The retractable protruding tooth structure can be tightly attached to the surface of the steel cable when the half buckle body is locked. At the same time, the magnitude of the extrusion force on the steel cable can be adjusted by designing the strength of the elastic member according to the actual working conditions, so that the magnitude of the extrusion force on the steel cable is just not enough to cause excessive deformation of the steel cable, which not only significantly increases the contact area between the steel cable groove and the steel cable surface, but also avoids the risk of failure of the steel cable due to plastic deformation caused by excessive force.

[0027] Embodiment 2:

[0028] Figure 6 Another embodiment of the present invention is also shown in the figure, which differs from the first embodiment in that the first steel cable groove 101 and the second steel cable groove 201 have different widths. This embodiment is suitable for working conditions where the diameters of the two steel cables are different, further improving the scope of application of the present invention.

Claims

1. A cross connector, characterized in that: The invention comprises a first half buckle body (1) and a second half buckle body (2) which can be interlocked and locked with each other, wherein the inner surfaces of the first half buckle body (1) and the second half buckle body (2) are respectively provided with a first steel cable groove (101) and a second steel cable groove (201) which are cross-shaped and used for steel cables to pass through and be fixed to each other; and an anti-slip fastening structure is formed on the surface of the first steel cable groove (101) and / or the second steel cable groove (201).

2. The cross connector according to claim 1, characterized in that: The first steel cable groove (101) and / or the second steel cable groove (201) are arc-shaped grooves.

3. The cross connector according to claim 2, characterized in that: The anti-slip fastening structure is a retractable protruding tooth (3).

4. The cross connector according to claim 3, characterized in that: The structure of the telescopic protruding tooth (3) is as follows: it comprises a protruding tooth telescopic groove (303) opened on the surface of the first steel cable groove (101) and / or the second steel cable groove (201); the protruding tooth end (301) is connected to the protruding tooth telescopic groove (303) through an elastic component (302), so that the protruding tooth end (301) can telescope and slide in the protruding tooth telescopic groove (303) through the elastic deformation of the elastic component (302).

5. The cross connector according to claim 4, characterized in that: The elastic component (302) is a spring.

6. The cross connector according to claim 2, characterized in that: The anti-slip fastening structure is a frosted layer formed on the surface of the first steel cable groove (101) and / or the second steel cable groove (201).

7. The cross connector according to any one of claims 1 to 6, characterized in that: The first half buckle body (1) and the second half buckle body (2) are fastened by a bolt structure.

8. The cross connector according to claim 7, characterized in that: The bolt structure comprises at least two through screw holes (102) passing through the first half buckle body (1); a locking screw hole (202) matching the through screw holes (102) is provided on the second half buckle body (2); the bolt (4) can pass through the through screw hole (102) and connect with the locking screw hole (202) to achieve the buckling and locking of the first half buckle body (1) and the second half buckle body (2).

9. The cross connector according to claim 8, characterized in that: A countersunk hole is arranged on the outer side of the through screw hole (102).

10. The cross connector according to any one of claims 1 to 6, characterized in that: The first steel cable groove (101) and the second steel cable groove (201) have different widths.

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