Special nut for bridge

Abstract

The utility model relates to the technical field of nut fastening pieces, and discloses a special nut for a bridge, which comprises a fixing seat, a prefabricated bolt piece and a bridge support, a mounting groove is formed in the bridge support, a built-in groove is formed in the top of the bridge support, a limiting locking piece is arranged in the built-in groove, and the limiting locking piece is arranged in the mounting groove. According to the bridge support, after the bridge support is in butt joint with the prefabricated bolt piece through the mounting groove, the nut sleeve is in threaded connection with the outer portion of the prefabricated bolt piece, and when the nut sleeve rotates to be close to the limiting locking piece, the top of the limiting locking piece can be attached and extruded; when the bridge support is fixed, the limiting locking piece in the built-in groove slowly enters a retraction state, and when the locking groove in the end of the nut sleeve moves to the position of the limiting locking piece, the limiting locking piece can be bounced into the locking groove through the supporting spring to lock the nut sleeve, so that automatic self-locking limiting can be achieved after the nut sleeve fixes the bridge support, and the service life of the bridge support is prolonged. And the nut sleeve is prevented from being stolen.

Description

Technical Field

[0001] The utility model relates to the technical field of nut fasteners, in particular to a nut specially used for bridges. Background Art

[0002] Nuts are parts that tightly connect mechanical equipment. They are used in many industries: automotive industry, foundry industry, shipbuilding industry, wind power generation, etc. According to the different needs of different industries, nuts have different types, materials and standards. Among them, nuts used to fix bridge components are often stolen when fixing bridge steel support components. Although there are nuts on the market that need to be disassembled using appropriate disassembly tools, the risk of theft cannot be avoided. For this reason, we propose a nut specifically for bridges. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a nut specially used for bridges.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nut specially used for bridges, comprising a fixing seat, a prefabricated bolt member and a bridge support, the interior of the bridge support is provided with an installation groove, the interior of the bridge support is movably plugged into and matched with the exterior of the prefabricated bolt member through the installation groove, the top of the bridge support is provided with a built-in groove, the interior of the built-in groove is provided with a telescopic and movable limit locking member, the top of the prefabricated bolt member is provided with a nut sleeve for locking the bridge support thread, and a locking groove is provided at the end of the nut sleeve corresponding to the position of the limit locking member.

[0005] Preferably, when the nut sleeve is connected with the external thread of the prefabricated bolt member and rotated to approach the limit lock piece inside the bridge support, the end of the nut sleeve and the upper part of the limit lock piece are in a fit and squeezed state, and the limit lock piece is located inside the built-in groove and squeezes the support spring. When the nut sleeve is continuously rotated to move the locking groove to the position of the limit lock piece, the limit lock piece inside the built-in groove is popped out by the support spring and is locked with the inside of the locking groove;

[0006] Furthermore, when the limit lock is inserted into the locking groove, the nut sleeve and the top of the bridge support are in a docking and fixed state.

[0007] Preferably, a notch is provided on the periphery of the nut sleeve, a communicating circular hole penetrating the locking groove is provided on one side of the notch, a telescopic member is provided inside the communicating circular hole, a control ring member connected to the end of the telescopic member is sleeved inside the notch, and a spring supporting and connecting the control ring member is sleeved outside the telescopic member;

[0008] Furthermore, when the control ring controls multiple groups of telescopic parts to be squeezed and moved inside the connecting circular holes to dock with the top of the limit lock, the locking groove inside the nut sleeve and the limit lock are in a separated and unlocked state, and the nut sleeve is in a normal rotation and disassembly state.

[0009] Preferably, the outer sleeve of the nut sleeve is provided with a hidden sleeve for hiding the notch, the inner wall of the hidden sleeve is provided with a spherical groove, the interior of the spherical groove is provided with a movable clamping ball, the outer periphery of the nut sleeve is provided with a clamping groove and a guide groove connected with the clamping groove, the clamping groove is an annular groove body, and the cross section of the clamping groove is an arc groove surface;

[0010] Furthermore, the inner side of the hidden sleeve is slidably engaged with the engaging groove on the periphery of the nut sleeve through an active engaging ball, and when the active engaging ball inside the hidden sleeve rotates to the guide groove position and the hidden sleeve slides upward, the hidden sleeve is located outside the nut sleeve and is in a disassembled state.

[0011] Beneficial Effects

[0012] The utility model provides a nut specially used for bridges, which has the following beneficial effects:

[0013] (1) A nut specially used for bridges. In this article, after the bridge support is connected and installed with the prefabricated bolt member on the top of the fixing seat through the installation groove, the nut sleeve can be threadedly connected with the outside of the prefabricated bolt member. When the nut sleeve rotates close to the limit lock member, the end of the nut sleeve can be in close contact with the top of the limit lock member. As the nut sleeve rotates further, the limit lock member inside the built-in groove is slowly retracted. When the nut sleeve rotates and connects with the top of the bridge support, the locking groove at the end of the nut sleeve will move to the limit lock member position. At the same time, the limit lock member inside the built-in groove can be elastically ejected into the locking groove to lock and fix the nut sleeve. At this time, the hidden sleeve is slidably connected with the outside of the nut sleeve. In this way, the nut sleeve is located outside the prefabricated bolt member and is in a locked and limited state. It is difficult to disassemble and steal through normal disassembly methods, thereby achieving the effect of automatically self-locking and limiting after the nut sleeve is fixed to the bridge support, thereby preventing the nut sleeve from being stolen.

[0014] (2) A nut specially used for bridges, wherein a connecting circular hole connected to the locking groove is opened through a notch on the periphery of the nut sleeve, and a telescopic part that can be retracted and moved to squeeze the limit lock part stuck in the locking groove is provided in the connecting circular hole. When the bridge support needs to be maintained and the nut sleeve is disassembled later, the hidden sleeve can be removed, and the telescopic part in the connecting circular hole can be moved by driving the control ring to squeeze the limit lock part. When the limit lock part is separated from the inside of the locking groove, the nut sleeve can be controlled to rotate and disassemble normally, thereby achieving the effect of facilitating the unlocking of the nut sleeve and the prefabricated bolt member, so that the nut sleeve can be disassembled and used normally.

[0015] (3) A nut specially used for a bridge, after the nut sleeve is threadedly installed and locked with a prefabricated bolt member, the hidden sleeve can be inserted into the guide groove position corresponding to the outer periphery of the nut sleeve through the movable locking ball inside the spherical groove, so that multiple groups of movable locking balls inside the hidden sleeve are slidably connected and cooperated with the locking groove, and the hidden sleeve is sleeved on the outside of the nut sleeve. At this time, the nut sleeve can be hidden by the hidden sleeve, so that when a thief disassembles and rotates the hidden sleeve, the hidden sleeve can slide directly inside the locking groove through the movable locking ball and cannot be disassembled, thereby misleading the thief and improving the protective effect of the nut sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A magnified view of middle;

[0020] Figure 3 It is a partial schematic diagram of the limit lock of the utility model;

[0021] Figure 4 It is a partial schematic diagram of the nut sleeve of the utility model;

[0022] Figure 5 It is a partial schematic diagram of the notch of the utility model;

[0023] Figure 6 It is a partial schematic diagram of the hidden sleeve of the utility model.

[0024] Legend:

[0025] 1. Fixed seat; 2. Prefabricated bolt; 3. Bridge support; 4. Installation groove; 5. Built-in groove; 6. Limit lock; 7. Support spring; 8. Nut sleeve; 9. Locking groove; 10. Notch; 11. Connecting round hole; 12. Telescopic part; 13. Control ring; 14. Spring; 15. Hidden sleeve; 16. Spherical groove; 17. Movable card ball; 18. Card groove; 19. Guide groove. DETAILED DESCRIPTION

[0026] 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.

[0027] Embodiment: A nut for a bridge, such as Figure 1-Figure 6 As shown, it includes a fixing seat 1, a prefabricated bolt member 2 and a bridge support 3. The interior of the bridge support 3 is provided with a mounting groove 4. The interior of the bridge support 3 is movably plugged and matched with the exterior of the prefabricated bolt member 2 through the mounting groove 4.

[0028] The difference is that a built-in groove 5 is provided on the top of the bridge bearing 3, and a telescopic limit lock 6 is arranged inside the built-in groove 5. A nut sleeve 8 for threadedly locking the bridge bearing 3 is provided on the top of the prefabricated bolt member 2. A locking groove 9 is provided at the end of the nut sleeve 8 corresponding to the position of the limit lock 6. A notch 10 is provided on the periphery of the nut sleeve 8. A connecting circular hole 11 penetrating the locking groove 9 is provided on one side of the notch 10. A telescopic telescopic member 12 is arranged inside the connecting circular hole 11. A control ring member 13 connected to the end of the telescopic member 12 is sleeved inside the notch 10, and a spring 14 supporting and connecting the control ring member 13 is sleeved outside the telescopic member 12. A hidden sleeve 15 hidden in the notch 10 is sleeved on the outside of the nut sleeve 8. A spherical groove 16 is provided on the inner wall of the hidden sleeve 15, and an active clamping ball 17 is arranged inside the spherical groove 16. A clamping groove 18 and a guide groove 19 connected to the clamping groove 18 are provided on the periphery of the nut sleeve 8.

[0029] Furthermore, when the nut sleeve 8 is connected to the external thread of the prefabricated bolt member 2 and rotated to approach the limit lock 6 inside the bridge bearing 3, the end of the nut sleeve 8 and the upper part of the limit lock 6 are in a fit and extrusion state, and the limit lock 6 is located in the built-in groove 5 and squeezes the support spring 7. When the nut sleeve 8 continues to be rotated to move the locking groove 9 to the position of the limit lock 6, the limit lock 6 inside the built-in groove 5 is popped out by the support spring 7 and is locked with the inside of the locking groove 9.

[0030] Furthermore, when the limiting lock 6 is inserted into the locking groove 9, the nut sleeve 8 and the top of the bridge support 3 are in a docking and fixed state.

[0031] Furthermore, when the control ring 13 controls the multiple groups of telescopic parts 12 to be squeezed and moved inside the connecting circular hole 11 to dock with the top of the limit lock 6, the locking groove 9 inside the nut sleeve 8 is in a separated and unlocked state from the limit lock 6, and the nut sleeve 8 is in a normal rotation and disassembly state.

[0032] Furthermore, the snap-fit ​​groove 18 is an annular groove body and the cross-section of the snap-fit ​​groove 18 is an arc-shaped groove surface. The inner side of the hidden sleeve 15 is slidably snap-fitted with the snap-fit ​​groove 18 on the periphery of the nut sleeve 8 through the movable snap-fit ​​ball 17. When the movable snap-fit ​​ball 17 inside the hidden sleeve 15 rotates to the position of the guide groove 19, when the hidden sleeve 15 is slid upward, the hidden sleeve 15 is located outside the nut sleeve 8 and is in a disassembled state.

[0033] The working principle of this utility model:

[0034] After the bridge bearing 3 is docked and installed with the prefabricated bolt part 2 on the top of the fixing seat 1 through the installation groove 4, the nut sleeve 8 can be threadedly connected with the outside of the prefabricated bolt part 2, and when the nut sleeve 8 rotates close to the limit lock 6, the end of the nut sleeve 8 can fit and contact with the top of the limit lock 6. As the nut sleeve 8 rotates further, the limit lock 6 inside the built-in groove 5 is slowly retracted. When the nut sleeve 8 rotates and docks with the top of the bridge bearing 3, the locking groove 9 at the end of the nut sleeve 8 will move to the position of the limit lock 6, and at the same time, the limit lock 6 inside the built-in groove 5 is supported by the spring. 7 can bounce into the locking groove 9 to lock and fix the nut sleeve 8. At this time, the hidden sleeve 15 is slidably sleeved on the outside of the nut sleeve 8. In this way, the nut sleeve 8 is located outside the prefabricated bolt member 2 and is in a locked and limited state. It is difficult to disassemble and steal through normal disassembly methods. When the bridge bearing 3 needs to be maintained and the nut sleeve 8 is disassembled, the hidden sleeve 15 can be removed, and the telescopic member 12 inside the communicating circular hole 11 is moved by driving the control ring 13 to squeeze the limit lock 6. When the limit lock 6 is separated from the inside of the locking groove 9, the nut sleeve 8 can be controlled to be normally rotated and disassembled.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A nut specially used for bridges, comprising a fixing seat (1), a prefabricated bolt member (2) and a bridge support (3), wherein a mounting groove (4) is provided inside the bridge support (3), and characterized in that: The interior of the bridge support (3) is movably plugged into the exterior of the prefabricated bolt member (2) via an installation groove (4); a built-in groove (5) is provided on the top of the bridge support (3); a telescopic limit lock (6) is provided inside the built-in groove (5); a nut sleeve (8) for thread-locking the bridge support (3) is provided on the top of the prefabricated bolt member (2); a locking groove (9) is provided at the end of the nut sleeve (8) corresponding to the position of the limit lock (6).

2. A nut specially used for bridges according to claim 1, characterized in that: When the nut sleeve (8) is connected to the external thread of the prefabricated bolt member (2) and rotated to approach the limit lock member (6) inside the bridge support (3), the end of the nut sleeve (8) and the upper part of the limit lock member (6) are in a fit and squeeze state, and the limit lock member (6) is located inside the built-in groove (5) and is in a squeeze state against the support spring (7).

3. A nut for bridges according to claim 2, characterized in that: When the nut sleeve (8) is continuously rotated to move the locking groove (9) to the position of the limiting lock member (6), the limiting lock member (6) inside the built-in groove (5) is ejected through the support spring (7) and locked with the inside of the locking groove (9).

4. A nut specially used for bridges according to claim 3, characterized in that: When the position-limiting lock (6) is inserted into the locking groove (9), the nut sleeve (8) and the top of the bridge support (3) are in a docking and fixed state.

5. A nut specially used for bridges according to claim 4, characterized in that: The outer periphery of the nut sleeve (8) is provided with a notch (10), a communicating circular hole (11) penetrating the locking groove (9) is provided on one side of the interior of the notch (10), a telescopic member (12) is arranged inside the communicating circular hole (11), a control ring member (13) connected to the end of the telescopic member (12) is sleeved inside the notch (10), and a spring (14) supporting and connecting the control ring member (13) is sleeved outside the telescopic member (12).

6. A nut specially used for bridges according to claim 5, characterized in that: When the control ring (13) controls the multiple groups of telescopic parts (12) to be squeezed and moved inside the communicating circular hole (11) to dock with the top of the limiting lock (6), the locking groove (9) inside the nut sleeve (8) and the limiting lock (6) are in a separated and unlocked state, and the nut sleeve (8) is in a normal rotating and disassembly state.

7. The nut for bridges according to claim 5, characterized in that: The nut sleeve (8) is externally sleeved with a hidden sleeve (15) for hiding the notch (10); the inner wall of the hidden sleeve (15) is provided with a spherical groove (16); a movable locking ball (17) is arranged inside the spherical groove (16); and the outer periphery of the nut sleeve (8) is provided with a clamping groove (18) and a guide groove (19) connected to the clamping groove (18).

8. The nut for bridges according to claim 7, characterized in that: The inner side of the hidden sleeve (15) is slidably engaged with the engaging groove (18) on the outer periphery of the nut sleeve (8) through an active engaging ball (17); when the active engaging ball (17) inside the hidden sleeve (15) rotates to the position of the guide groove (19), the hidden sleeve (15) is slid upward, and the hidden sleeve (15) is located outside the nut sleeve (8) in a disassembled state.

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