Anti-loosening cable clamp for suspension bridge

Abstract

The utility model relates to the technical field of suspension bridge cable clamps, and discloses an anti-loosening cable clamp for a suspension bridge, which is provided with a plurality of cable clamp half bodies with semi-ring structures, and the adjacent cable clamp half bodies are locked by a plurality of bolt pairs arranged at bearing parts; the bolt pair is provided with a screw and at least one nut assembly, and the nut assemblies are in threaded connection with the corresponding ends of the screw. The end, used for being connected with the nut assembly, of the screw is provided with a locking section and an anti-loosening section which are formed in a stepped structure and provided with a thread structure, the diameter of the anti-loosening section is smaller than that of the locking section, and the thread pitch of the locking section and the thread pitch of the anti-loosening section are different. The nut assembly is at least provided with a locking nut and an anti-loosening nut, the locking nut is in threaded connection with the corresponding locking section of the screw rod, the anti-loosening nut is in threaded connection with the corresponding anti-loosening section of the screw rod, the locking nut connected in place applies locking force to the cable clamp half bodies, and the anti-loosening nut connected in place axially abuts against the locking nut. The bolt pair is simple in structure and favorable for reducing the loss of the clamping force of the bolt pair.

Description

Technical Field

[0001] This utility model relates to the technical field of cable clamps for suspension bridges, specifically, to an anti-loosening cable clamp for suspension bridges. Background Technology

[0002] The deck load of a suspension bridge is transferred to the main cable through the suspenders. Since the main cable is parabolic and the suspenders are vertical, under the tension of the suspenders, the cable clamps exert pressure perpendicular to the main cable and a sliding force along the main cable direction. The anti-slip force of the cable clamps is borne by the friction between the cable clamps and the main cable through the tightening force applied by the bolt pair. Therefore, maintaining the clamping force of the bolt pair is the key to ensuring the effective transfer of load.

[0003] To maintain the clamping force of the bolt assembly, a cable clamp with anti-loosening function has been proposed in the prior art. See the technology disclosed in Chinese patent literature entitled "A Cable Clamp with Anti-Loosening Function for Bolt Assemblies," publication number CN216739274U, published on June 14, 2022. In this technology, a first washer, a second washer, and a nut are inserted through the bolt. The inner end faces of the first and second washers are respectively provided with mutually interlocking radial wedge-shaped structures, and the outer end faces of both the first and second washers are provided with radial serrated structures. The radial wedge-shaped structures on the inner end faces of the first and second washers interlock, and displacement only occurs between the inner surfaces of the radial wedge-shaped structures, thereby increasing the clamping force. This wedge structure can prevent the bolt assembly from loosening, achieving a self-locking anti-loosening effect. However, this technology has the following technical problems: firstly, the high structural precision requirements of the first and second washers lead to high structural processing difficulty; secondly, the mating structure of the first and second washers can only reduce the loosening speed of the nut, but cannot effectively prevent the nut from loosening. Utility Model Content

[0004] The technical objective of this utility model is to provide a suspension bridge anti-loosening cable clamp that is simple in structure and can effectively prevent nut loosening and reduce the loss of clamping force of bolt pairs, in view of the special characteristics of the above-mentioned cable clamp and the shortcomings of the existing technology.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A cable clamp for suspension bridges has multiple semi-ring structured clamp halves, and adjacent clamp halves are locked together by multiple bolt pairs arranged at the receiving part.

[0007] The bolt assembly has a screw and at least one set of nut assemblies, which are threadedly connected to the corresponding ends of the screw;

[0008] The bolt of the bolt assembly, used as the end connecting the nut assembly, has a locking section and an anti-loosening section formed in a stepped structure and respectively provided with threaded structures. The diameter of the anti-loosening section is smaller than the diameter of the locking section, and the thread pitch of the locking section is different from that of the anti-loosening section.

[0009] The nut assembly has at least a locking nut and a lock nut. The locking nut is threaded to the corresponding locking section of the screw, and the lock nut is threaded to the corresponding lock nut of the screw. The locking nut in place applies a locking force to the clamp half, and the lock nut in place axially abuts against the locking nut.

[0010] The above technical measures address the special characteristics of the cable clamp by using locking nuts and anti-loosening nuts with different pitches to cooperate on the screw. When the locking nuts and anti-loosening nuts rotate at the same angle, the different pitches result in different lifts, thereby achieving self-locking, effectively preventing the nuts from loosening, and thus effectively reducing the damage caused by the clamping force of the bolt pair.

[0011] The bolt pair structure in the above technical measures is simple and easy to operate; at the same time, the diameter of the anti-loosening section of the screw is smaller than the diameter of the locking section, which facilitates the installation of the lock nut.

[0012] Furthermore, the thread pitch of the locking section of the screw is greater than the thread pitch of the anti-loosening section.

[0013] In the above technical measures, the thread pitch of the locking section of the screw is greater than the thread pitch of the anti-loosening section. When the locking nut and the anti-loosening nut rotate at the same angle, the displacement of the locking nut will be restricted by the anti-loosening nut, thereby effectively preventing the nut from loosening and effectively reducing the damage of the clamping force of the bolt pair.

[0014] Furthermore, the inner hole of the lock nut has a stepped structure, with a small-diameter threaded section and a large-diameter adjusting section;

[0015] The anti-loosening nut is threadedly connected to the corresponding anti-loosening section of the screw through the internal thread section;

[0016] The inner diameter of the adjusting section of the anti-loosening nut is greater than the outer diameter of the corresponding locking section of the screw; and the axial length of the adjusting section of the anti-loosening nut is greater than the distance between the locking nut connected in place and the outer end of the locking section.

[0017] The locking nut, connected to the position, axially abuts against the locking nut through the end of the inner hole adjustment section.

[0018] The above-mentioned technical measures, by setting an adjustment section inside the anti-loosening nut, with the inner diameter of the adjustment section being larger than the outer diameter of the corresponding locking section of the screw and the axial length being larger than the distance between the locking nut connected in place and the outer end of the locking section, facilitate the adjustment of the position of the anti-loosening nut and help ensure the tight fit between the anti-loosening nut and the locking nut.

[0019] Furthermore, the nut assembly includes a locking nut, an anti-loosening nut, and a spacer ring;

[0020] The inner diameter of the spacer ring is greater than the outer diameter of the corresponding locking section of the screw; and the axial length of the spacer ring is greater than the distance between the locking nut connected in place and the outer end of the locking section.

[0021] The lock nut is connected to the position and axially abuts against the locking nut via the spacer ring.

[0022] The above-mentioned technical measures, by setting a spacer ring, with the inner diameter of the spacer ring being larger than the outer diameter of the corresponding locking section of the screw and the axial length being larger than the distance between the locking nut connected in place and the outer end of the locking section, facilitate the adjustment of the position of the anti-loosening nut and help ensure the tight fit between the anti-loosening nut and the locking nut.

[0023] Furthermore, the lock nut is a nut-like structure;

[0024] The lock nut connected to the screw forms a cover over the corresponding end of the screw.

[0025] The above-mentioned technical measures can prevent dust, debris and other contaminants from entering, which helps to reduce situations such as loosening of nuts caused by external environmental factors.

[0026] Furthermore, the locking nut connected to the position applies a locking force to the cable clamp half through the washer.

[0027] Furthermore, the locking nut applies a locking force to the cable clamp half through the spherical washer assembly;

[0028] The spherical washer assembly has an inner spherical washer with a planar structure that abuts against the cable clamp receiving part, and an outer spherical washer located between the inner spherical washer and the locking nut. The outer spherical washer and the inner spherical washer are fitted together with a spherical relationship.

[0029] The above-mentioned technical measures apply locking force to the cable clamp half through the inner and outer spherical washers, which facilitates installation; the washers can increase the contact area with the cable clamp half, so that the locking force is transmitted to the cable clamp half more evenly; at the same time, it helps to reduce wear caused by friction between the locking nut and the cable clamp half.

[0030] Furthermore, the inner hole of the outer spherical washer is larger than the inner hole of the inner spherical washer;

[0031] Furthermore, the end of the locking nut has a guide positioning section that is fitted inside the inner hole of the outer spherical washer, and the locking nut is engaged with the outer spherical washer in a stop-lock relationship through the guide positioning section.

[0032] The above-mentioned technical measures, by setting up a guide positioning section, can restrict and position the locking nut, which is beneficial to improving structural accuracy; at the same time, it can increase the contact area between the locking nut and the outer spherical washer, which is beneficial to the transmission of locking force.

[0033] Furthermore, the bolt assembly has a screw and two sets of nut assemblies, with the two ends of the screw serving as corresponding connections to the two sets of nut assemblies.

[0034] Furthermore, the cable clamp has two semi-ring structured cable clamp halves, which are joined together in the circumferential direction to form a cable hole, and are joined together in the circumferential direction to form two receiving parts;

[0035] Each receiving point has multiple bolt pairs arranged along the axial spacing.

[0036] One or more technical solutions provided by this utility model have at least the following technical effects or advantages:

[0037] This utility model addresses the unique characteristics of the aforementioned cable clamp by using a locking nut and an anti-loosening nut with different pitches to cooperate on the screw. When the locking nut and the anti-loosening nut rotate back to the same angle, the different pitches result in different lifts, thereby achieving self-locking, effectively preventing the nut from loosening, and thus effectively reducing the damage caused by the clamping force of the bolt pair.

[0038] The bolt assembly structure in this invention is simple and easy to operate; at the same time, the diameter of the anti-loosening section of the screw is smaller than the diameter of the locking section, which facilitates the installation of the locking nut. Attached Figure Description

[0039] The accompanying drawings, which are provided to further illustrate the embodiments of the present invention and constitute a part of the present invention, do not constitute a limitation thereof.

[0040] Figure 1 This is a schematic diagram of the structure of this utility model;

[0041] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0042] Figure 3 This is a structural schematic diagram of the bolt assembly (with the spherical washer assembly removed) in this utility model;

[0043] Figure 4 This is a schematic diagram of the screw structure in this utility model;

[0044] Figure 5 This is a schematic diagram of the anti-loosening nut in this utility model;

[0045] Figure 6 This is a schematic diagram of the locking nut in this utility model;

[0046] Among them, 1-clip clamp half; 2-screw; 3-nut assembly; 31-anti-loosening nut; 311-threaded section; 312-adjusting section; 32-locking nut; 321-guide positioning section; 4-spherical washer assembly; 41-inner spherical washer; 42-outer spherical washer. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of this utility model and the features within them can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0049] Example 1

[0050] Reference Figures 1-6 This embodiment provides an anti-loosening cable clamp for suspension bridges, which has multiple cable clamp halves 1 with a semi-ring structure. Adjacent cable clamp halves 1 are locked together by multiple bolt pairs arranged at the receiving parts. In this embodiment, the cable clamp has two cable clamp halves 1 with a semi-ring structure. These two cable clamp halves 1 are joined together in the circumferential direction to form a cable hole, and are joined together in the circumferential direction to form two receiving parts. Multiple bolt pairs are arranged at each receiving part along the axial spacing.

[0051] The bolt pair has a screw 2 and at least one set of nut assemblies 3, which are threadedly connected to the corresponding ends of the screw 2; in this embodiment, the bolt pair has a screw 2 and two sets of nut assemblies 3, and the two ends of the screw 2 are used to connect the two sets of nut assemblies 3 respectively.

[0052] The bolt 2 of the bolt assembly, used as the end of the connecting nut assembly 3, has a locking section and an anti-loosening section formed in a stepped structure and respectively provided with threaded structures. The diameter of the anti-loosening section is smaller than the diameter of the locking section, and the thread pitch of the locking section is different from that of the anti-loosening section; wherein, the thread pitch of the locking section of the bolt 2 is greater than the thread pitch of the anti-loosening section.

[0053] The nut assembly 3 has at least a locking nut 32 and a locking nut 31. The locking nut 32 is threaded to the corresponding locking section of the screw 2, and the locking nut 31 is threaded to the corresponding locking section of the screw 2. The locking nut 32 in place applies a locking force to the cable clamp half 1, and the locking nut 31 in place axially abuts against the locking nut 32.

[0054] The inner hole of the anti-loosening nut 31 has a stepped structure, with a small-diameter threaded section 311 and a large-diameter adjusting section 312;

[0055] The anti-loosening nut 31 is threadedly connected to the corresponding anti-loosening section of the screw 2 through the internal thread section 311;

[0056] The inner diameter of the inner hole adjustment section 312 of the anti-loosening nut 31 is greater than the outer diameter of the corresponding locking section of the screw 2; and the axial length of the inner hole adjustment section 312 of the anti-loosening nut 31 is greater than the distance between the locking nut 32 connected in place and the outer end of the locking section.

[0057] The anti-loosening nut 31 connected to the position axially abuts against the locking nut 32 through the end of the inner hole adjusting section 312.

[0058] The lock nut 31 is a nut structure;

[0059] The anti-loosening nut 31 connected to the screw 2 forms a cover on the corresponding end of the screw 2.

[0060] The locking nut 32 connected to the position applies a locking force to the cable clamp half 1 through the washer.

[0061] Locking nut 32 applies locking force to cable clamp half 1 through spherical washer assembly 4;

[0062] The spherical washer assembly 4 has an inner spherical washer 41 that abuts against the cable clamp receiving part with a planar structure, and an outer spherical washer 42 located between the inner spherical washer 41 and the locking nut 32. The outer spherical washer 42 and the inner spherical washer 41 are fitted together with a spherical relationship.

[0063] The inner hole of the outer spherical washer 42 is larger than the inner hole of the inner spherical washer 41;

[0064] Furthermore, the end of the locking nut 32 has a guide positioning section 321 that is fitted inside the inner hole of the outer spherical washer 42, and the locking nut 32 is engaged with the outer spherical washer 42 through the guide positioning section 321 in a stop-fit ​​relationship.

[0065] During assembly, an inner spherical washer 41, an outer spherical washer 42, a locking nut 32, and a lock nut 31 are sequentially assembled at both ends of the screw 2 along its axial direction. The inner spherical washer 41 abuts against the cable clamp receiving part. The outer spherical washer 42 and the inner spherical washer 41 are fitted together with a spherical relationship. The locking nut 32 is fitted together with the outer spherical washer 42 with a stop relationship through the guide positioning section 321. The lock nut 31 is axially pressed against the locking nut 32 through the end of the adjusting section 312, thus completing the assembly.

[0066] When the locking nut 32 and the anti-loosening nut 31 are rotated by the same angle under force, the different pitches result in different lifts, thereby achieving self-locking, effectively preventing loosening, and thus effectively reducing the damage of the bolt pair clamping force.

[0067] Example 2

[0068] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0069] The nut assembly includes a lock nut, a locknut, and a spacer.

[0070] The inner diameter of the spacer ring is greater than the outer diameter of the corresponding locking section of the screw; and the axial length of the spacer ring is greater than the distance between the locking nut connected in place and the outer end of the locking section.

[0071] The lock nut is connected to the position and is axially tightened against the lock nut by the spacer ring.

[0072] This embodiment can achieve the technical objectives of this utility model to a certain extent.

[0073] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0074] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A cable clamp for suspension bridges, comprising multiple cable clamp halves (1) with a semi-ring structure, wherein adjacent cable clamp halves (1) are locked together by multiple bolt pairs arranged at the receiving part; The bolt assembly has a screw (2) and at least one set of nut assemblies (3), which are threadedly connected to the corresponding ends of the screw (2); Its features are: The bolt (2) of the bolt assembly, which serves as the end for connecting the nut assembly (3), has a locking section and an anti-loosening section formed in a stepped structure and respectively provided with threaded structures. The diameter of the anti-loosening section is smaller than the diameter of the locking section, and the thread pitch of the locking section is different from that of the anti-loosening section. The nut assembly (3) has at least a locking nut (32) and a locking nut (31). The locking nut (32) is threaded to the corresponding locking section of the screw (2), and the locking nut (31) is threaded to the corresponding locking section of the screw (2). The locking nut (32) in place applies a locking force to the cable clamp half (1), and the locking nut (31) in place axially abuts against the locking nut (32).

2. The anti-loosening cable clamp for suspension bridges according to claim 1, characterized in that: The thread pitch of the locking section of the screw (2) is greater than the thread pitch of the anti-loosening section.

3. The anti-loosening cable clamp for suspension bridges according to claim 1, characterized in that: The inner hole of the anti-loosening nut (31) has a stepped structure, with a small-diameter threaded section (311) and a large-diameter adjusting section (312). The anti-loosening nut (31) is threadedly connected to the corresponding anti-loosening section of the screw (2) through the inner thread section (311); The inner diameter of the inner hole adjustment section (312) of the anti-loosening nut (31) is greater than the outer diameter of the corresponding locking section of the screw (2); and the axial length of the inner hole adjustment section (312) of the anti-loosening nut (31) is greater than the distance between the locking nut (32) connected to the position and the outer end of the locking section. The locking nut (31) connected to the position axially abuts the locking nut (32) through the end of the inner hole adjustment section (312).

4. The anti-loosening cable clamp for suspension bridges according to claim 1, characterized in that: The nut assembly (3) has a locking nut (32), a lock nut (31), and a spacer ring; The inner diameter of the spacer ring is greater than the outer diameter of the corresponding locking section of the screw (2); and the axial length of the spacer ring is greater than the distance between the locking nut (32) connected to the position and the outer end of the locking section. The lock nut (31) is connected to the in place and axially abuts the locking nut (32) through the spacer ring.

5. The anti-loosening cable clamp for suspension bridges according to claim 1, 3, or 4, characterized in that: The anti-loosening nut (31) is a nut structure; The anti-loosening nut (31) connected to the screw (2) forms a cover on the corresponding end of the screw (2).

6. The anti-loosening cable clamp for suspension bridges according to claim 1, characterized in that: The locking nut (32) connected to the position applies a locking force to the cable clamp half (1) through the washer.

7. The anti-loosening cable clamp for suspension bridges according to claim 6, characterized in that: The locking nut (32) applies a locking force to the cable clamp half (1) through the spherical washer assembly (4); The spherical washer assembly (4) has an inner spherical washer (41) that abuts against the cable clamp receiving part with a planar structure, and an outer spherical washer (42) located between the inner spherical washer (41) and the locking nut (32). The outer spherical washer (42) and the inner spherical washer (41) are fitted together with a spherical relationship.

8. The anti-loosening cable clamp for suspension bridges according to claim 7, characterized in that: The inner hole of the outer spherical washer (42) is larger than the inner hole of the inner spherical washer (41); Furthermore, the end of the locking nut (32) has a guide positioning section (321) that is fitted inside the inner hole of the outer spherical washer (42), and the locking nut (32) is engaged with the outer spherical washer (42) through the guide positioning section (321) in a stop-and-go relationship.

9. The anti-loosening cable clamp for suspension bridges according to claim 1, characterized in that: The bolt pair has a screw (2) and two sets of nut assemblies (3), the two ends of the screw (2) are used to connect the two sets of nut assemblies (3) respectively.

10. The anti-loosening cable clamp for suspension bridges according to claim 1, characterized in that: The cable clamp has two cable clamp halves (1) with a semi-ring structure. These two cable clamp halves (1) are joined together in the circumferential direction to form a cable hole, and are joined together in the circumferential direction to form two receiving parts. Each receiving point has multiple bolt pairs arranged along the axial spacing.

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