Anti-loosening structure of foot screw
The design of the locking and fixing mechanisms solves the problem of anchor bolts loosening during long-term use, achieving a stable connection of the anchor bolts and ensuring the fixing effect of mechanical equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN HAOJIN FASTENER MANUFACTURING CO LTD
- Filing Date
- 2025-06-14
- Publication Date
- 2026-04-21
AI Technical Summary
Existing anchor bolts are prone to loosening over long-term use, affecting the fixing effect of mechanical equipment.
The device employs a locking and fixing mechanism, including components such as a locking nut, a limit nut, a lower pressure ring, a sliding assembly, a slide rod, a support spring, a top plate, fixing bolts, a top frame, and a lower pressure rod. Through the cooperation of the sliding assembly and the fixing mechanism, the locking nut and the limit nut are tightened to prevent loosening.
It effectively prevents the locking nuts and limit nuts from loosening, improves the fixing effect of mechanical equipment, ensures that the equipment is not easily loosened during long-term use, and ensures the normal use of mechanical equipment.
Smart Images
Figure CN224149965U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of anchor screw technology, and more specifically, to an anti-loosening structure for anchor screws. Background Technology
[0002] Anchor bolts are special bolts used to fix equipment, structural components, etc. to concrete foundations. They consist of a bolt, an anchor head, and a threaded section. Their main function is to fix and connect equipment and transfer loads. They are widely used in construction, machinery, power and other fields.
[0003] When installing mechanical components on a concrete foundation, one end of this type of bolt is embedded in the concrete for use in installing heavy machinery. However, in actual use, especially over long periods of time, the nuts on the existing anchor bolts may loosen due to long-term vibration, which can easily affect the fixing effect of the machinery and its normal use. Utility Model Content
[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide an anti-loosening structure for anchor bolts, which solves the technical problem in the prior art that anchor bolts are prone to loosening during long-term use, thereby easily affecting the fixing effect of mechanical equipment and affecting the normal use of mechanical equipment.
[0005] According to one aspect, at least one embodiment of this disclosure provides an anti-loosening structure for anchor bolts, including a base plate, a screw rod fixedly connected to the top end of the base plate, and further including: a locking nut, a limiting nut, and a fixing mechanism. The locking nut is threadedly connected to the screw rod, the limiting nut is threadedly connected to the screw rod, a groove is provided at the bottom end of the limiting nut, and a locking mechanism is provided in the groove. The locking mechanism is used to abut the limiting nut against the locking nut, and the fixing mechanism is disposed at the top end of the screw rod for pressing down on the limiting nut.
[0006] To tightly press the locking nut in place and limit its position, the locking mechanism includes: a lower pressure ring, locking protrusions, and force-bearing protrusions. The lower pressure ring is slidably disposed in a groove via a sliding assembly. Multiple locking protrusions are provided, and all of the multiple locking protrusions are fixedly connected to the bottom end of the lower pressure ring. Multiple force-bearing protrusions are provided, and all of the multiple force-bearing protrusions are fixedly connected to the top end of the locking nut.
[0007] To support the locking protrusion and the force-bearing protrusion on the lower pressure ring, the sliding assembly includes: a slide rod, a support spring, and a top plate. Multiple slide rods are provided, and each slide rod is fixedly connected to the top of the lower pressure ring. The limiting nut has multiple sliding holes, and the multiple slide rods are slidably connected within these holes. Support springs are fitted onto the circumferential surfaces of each slide rod, and the two ends of each support spring are fixedly connected to the inner wall of the groove and the lower pressure ring, respectively. A top plate is fixedly connected to the top of each slide rod.
[0008] To hold the locking nut in place and prevent it from loosening, the fixing mechanism includes a fixing bolt, a top bracket, and a lower pressure rod. The top of the screw has a threaded hole, and the fixing bolt is threaded into the threaded hole. The top bracket is located at the top of the screw and has a through hole. The fixing bolt is located in the through hole. Multiple lower pressure rods are provided, and all of the multiple lower pressure rods are fixedly connected to the bottom of the top bracket.
[0009] In order to make the locking protrusion and the force-bearing protrusion abut against each other, the locking nut and the limiting nut are locked. Both the locking protrusion and the force-bearing protrusion are provided with inclined surfaces, and the inclined surfaces of the locking protrusion and the force-bearing protrusion are opposite to each other.
[0010] To increase the friction between the locking nut and the mechanical equipment, the bottom end of the locking nut is fixedly connected with multiple contact protrusions.
[0011] To facilitate the disassembly of the limit nuts, a lifting bracket is fixedly connected to the top of multiple top plates.
[0012] To ensure more stable pressure on the limit nut, pressure plates are fixedly connected to the bottom ends of the multiple pressure rods.
[0013] The beneficial effects of the embodiments disclosed herein are as follows:
[0014] In this disclosure, the locking mechanism facilitates the limiting of the locking nut that presses against the mechanical equipment, thereby preventing the locking nut from loosening. The fixing mechanism facilitates the limiting of the limiting nut, thereby effectively preventing the limiting nut from loosening. Therefore, even after long-term use, the anchor bolts are not prone to loosening, thus improving the fixing effect on the mechanical equipment and making it less likely to affect the normal use of the mechanical equipment. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present disclosure;
[0017] Figure 2 This is a structural schematic diagram from another angle in one embodiment of the present disclosure;
[0018] Figure 3 This is a cross-sectional structural schematic diagram of the limiting nut in one embodiment of the present disclosure;
[0019] Figure 4 This is a schematic diagram of the fixing mechanism in one embodiment of the present disclosure;
[0020] Figure 5 This is a schematic diagram of the structure of the base plate, screw, locking nut and force-bearing protrusion in one embodiment of the present disclosure.
[0021] In the diagram: 1. Base plate; 2. Screw; 3. Locking nut; 4. Limiting nut; 5. Lower pressure ring; 6. Locking protrusion; 7. Force-bearing protrusion; 8. Slide rod; 9. Support spring; 10. Top plate; 11. Fixing bolt; 12. Top frame; 13. Lower pressure rod; 14. Contact protrusion; 15. Tilter frame; 16. Pressure plate. Detailed Implementation
[0022] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0023] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0024] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0025] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0026] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0028] like Figures 1-5 As shown, this invention discloses an anti-loosening structure for anchor bolts according to an embodiment of the present invention. The structure includes a base plate 1, with a screw rod 2 fixedly connected to the top of the base plate 1. It also includes a locking nut 3, a limiting nut 4, and a fixing mechanism. The bottom end of the locking nut 3 is fixedly connected to multiple contact protrusions 14. The locking nut 3 is threaded onto the screw rod 2. The limiting nut 4 is threaded onto the screw rod 2. A groove is provided at the bottom end of the limiting nut 4, and a locking mechanism is provided within the groove. The locking mechanism is used to press the limiting nut 4 against the locking nut 3. The fixing mechanism is located at the top of the screw rod 2 and is used to press down on the limiting nut 4. The locking mechanism helps to limit the locking nut 3, preventing it from loosening. Similarly, the fixing mechanism helps to limit the limiting nut 4, effectively preventing it from loosening. Therefore, even after prolonged use, the anchor bolt is less likely to loosen, thus improving the fixing effect on the machinery and minimizing disruption to its normal operation.
[0029] The locking mechanism includes: a lower pressure ring 5, a locking protrusion 6, and a force-receiving protrusion 7. Both the locking protrusion 6 and the force-receiving protrusion 7 have inclined surfaces, which face each other. The lower pressure ring 5 is slidably disposed within a groove via a sliding assembly. Multiple locking protrusions 6 are provided, each fixedly connected to the bottom end of the lower pressure ring 5. Multiple force-receiving protrusions 7 are provided, each fixedly connected to the top end of the locking nut 3. The sliding assembly includes: a slide rod. 8. Support springs 9 and top plates 10. The top of multiple top plates 10 is fixedly connected to a lifting frame 15. Multiple slide rods 8 are provided. Multiple slide rods 8 are fixedly connected to the top of the lower pressure ring 5. Multiple sliding holes are provided on the limiting nut 4. Multiple slide rods 8 are slidably connected in multiple sliding holes. Support springs 9 are sleeved on the circumferential surface of multiple slide rods 8. The two ends of multiple support springs 9 are fixedly connected to the inner wall of the groove and the lower pressure ring 5 respectively. The top of each slide rod 8 is fixedly connected to a top plate 10.
[0030] After the locking nut 3 is tightened, the limiting nut 4 is tightened above the screw 2 and continued to tighten. During the tightening process, the locking protrusion 6 and the force-bearing protrusion 7 come into contact. When the locking protrusion 6 and the force-bearing protrusion 7 come into contact, the lower pressure ring 5 is subjected to force and rises. At this time, the sliding rod 8 slides upward in the sliding hole. At this time, the support spring 9 is compressed. After the locking nut 3 and the limiting nut 4 are pressed together, the support spring 9 supports the lower pressure ring 5, thereby supporting the lower pressure ring 5 to drive the locking protrusion 6 and the force-bearing protrusion 7 to lock together, thereby locking the locking nut 3 and the limiting nut 4.
[0031] The fixing mechanism includes: fixing bolts 11, top frame 12 and lower pressure rods 13. The bottom ends of multiple lower pressure rods 13 are fixedly connected to pressure plates 16. The top end of the screw rod 2 is provided with a screw hole, and the fixing bolt 11 is threaded into the screw hole. The top frame 12 is set at the top end of the screw rod 2. The top frame 12 is provided with a through hole, and the fixing bolt 11 is set in the through hole. Multiple lower pressure rods 13 are provided, and multiple lower pressure rods 13 are fixedly connected to the bottom end of the top frame 12.
[0032] After the limit nut 4 is locked, tighten the fixing bolt 11 to press down the top frame 12 and the lower pressure rod 13, thereby driving the pressure plate 16 to press against the limit nut 4, thus locking the limit nut 4.
[0033] Working principle: When it is necessary to fix and lock the mechanical equipment, the screw 2 is passed through the mounting hole of the mechanical equipment, and then the locking nut 3 is tightened. After the locking nut 3 is tightened, the limit nut 4 is tightened above the screw 2 and continues to tighten. During the tightening process, the locking protrusion 6 and the force-bearing protrusion 7 come into contact. When the locking protrusion 6 and the force-bearing protrusion 7 come into contact, the lower pressure ring 5 is subjected to force and rises. At this time, it drives the slide rod 8 to slide upward in the slide hole. At this time, the support spring 9 is compressed. After the locking nut 3 and the limit nut 4 are pressed together, the support spring 9 exerts pressure on the lower pressure ring. 5. Support, thereby supporting the lower pressure ring 5 to drive the locking protrusion 6 and the force-bearing protrusion 7 to lock the locking nut 3 and the limit nut 4. After the limit nut 4 is locked, tighten the fixing bolt 11 to press down the top frame 12 and the lower pressure rod 13, thereby driving the pressure plate 16 to abut against the limit nut 4, thereby locking the limit nut 4. When it is necessary to disassemble the limit nut 4, the operator uses a tool to pry the lifting frame 15 to drive the sliding rod 8 to rise, thereby driving the lower pressure ring 5 to rise, thereby releasing the abutment of the locking protrusion 6 and the force-bearing protrusion 7.
[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications or substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. An anti-loosening structure for anchor bolts, comprising a base plate (1), wherein a screw rod (2) is fixedly connected to the top end of the base plate (1), characterized in that, Also includes: Locking nut (3), which is threaded onto the screw (2); A limiting nut (4) is threaded onto the screw (2). The bottom end of the limiting nut (4) has a groove, and a locking mechanism is provided in the groove. The locking mechanism is used to press the limiting nut (4) against the locking nut (3). A fixing mechanism is provided at the top of the screw (2) for pressing down the limiting nut (4).
2. The anti-loosening structure of an anchor bolt according to claim 1, wherein The locking mechanism includes: The lower pressure ring (5) is slidably disposed in the groove by means of a sliding component; Locking protrusions (6) are provided in multiple ways, and all of the locking protrusions (6) are fixedly connected to the bottom end of the lower pressure ring (5); Force-receiving protrusions (7) are provided in multiple forms, and all of the force-receiving protrusions (7) are fixedly connected to the top of the locking nut (3).
3. The anti-loosening structure of a foundation screw according to claim 2, wherein The sliding component includes: The slide rod (8) is provided in multiple ways. All slide rods (8) are fixedly connected to the top of the lower pressure ring (5). The limiting nut (4) is provided with multiple sliding holes. The multiple slide rods (8) are slidably connected in the multiple sliding holes respectively. Support spring (9), the circumferential surface of the plurality of slide rods (8) is fitted with the support spring (9), and the two ends of the plurality of support springs (9) are respectively fixedly connected to the inner wall of the groove and the lower pressure ring (5); Top plate (10), the top end of each of the slide rods (8) is fixedly connected to the top plate (10).
4. The anti-loosening structure of an anchor bolt according to claim 1, wherein The fixing mechanism includes: A fixing bolt (11) is provided, and a screw hole is provided at the top end of the screw rod (2), and the fixing bolt (11) is threaded into the screw hole; Top frame (12), the top frame (12) is disposed at the top of the screw (2), the top frame (12) has a through hole, and the fixing bolt (11) is disposed in the through hole; The pressure rod (13) is provided in multiple ways, and all of the pressure rods (13) are fixedly connected to the bottom end of the top frame (12).
5. The anti-loosening structure of an anchor bolt according to claim 2, wherein Both the locking protrusion (6) and the force-bearing protrusion (7) have inclined surfaces, and the inclined surfaces of the locking protrusion (6) and the force-bearing protrusion (7) are opposite to each other.
6. The anti-loosening structure of an anchor bolt according to claim 1, wherein The bottom end of the locking nut (3) is fixedly connected with multiple contact protrusions (14).
7. The anti-loosening structure of an anchor bolt according to claim 3, wherein The top of each of the multiple top plates (10) is fixedly connected to a tilting frame (15).
8. The anti-loosening structure of a foundation screw according to claim 4, wherein Each of the multiple pressure rods (13) has a pressure plate (16) fixedly connected to its bottom end.