Stud bolt with anti-loosening structure

Abstract

The utility model discloses a stud bolt with an anti-loose structure, which comprises a screw rod part and thread parts positioned at two ends of the screw rod part, the anti-loose structure is arranged in the top thread part, and the anti-loose structure comprises a slot, a movable pin, a groove, a thread sleeve, a rotating screw rod, a sliding block, a group of opposite inclined sliding chutes, a group of opposite limiting blocks and a locking nut. The double-end bolt has the advantages that due to the fact that the anti-loosening structure is arranged in the top thread part, after the locking nut is screwed in a suspended mode, the movable pin is inserted into the proper position in the top thread part, the rotating lead screw is rotated, the set of opposite limiting blocks are driven to stretch out and be clamped into the annular groove of the locking nut, the limiting purpose is achieved, and the anti-loosening effect of the double-end bolt is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to double -end bolt technical field, concretely is a double -end bolt with anti -loose structure. BACKGROUND

[0002] Double -end bolt, also called double -end screw or double -end stud. For connecting the fixed link function of machinery, double -end bolt both ends have threads, the middle screw rod, have thick also have thin. Generally used in mine machinery, bridge, automobile, motorcycle, boiler steel structure, tower, large -span steel structure and large -scale building etc.

[0003] Double -end bolt in the installation process, generally is the bottom thread department hangs and twists into carrier one, screw rod department passes through carrier two, top thread department hangs and twists lock nut and fixes. The existing patent application number for CN202220414338.1 disclosed a kind of double -end bolt with double-end anti-loose structure, by adjusting mechanism is pulled to drive positioning mechanism to enter the inside of fixed slot, pad is installed or disassembled, opposite direction pull adjusting mechanism can be fixed to pad. However, in actual use process, since pad thickness is thin, it is inconvenient to groove on pad, so that positioning rod cannot effectively limit pad, influence double -end bolt anti-loose effect. UTILITY MODEL CONTENTS

[0004] In view of above-mentioned defects, the utility model provides a double -end bolt with anti -loose structure to solve the double -end bolt anti-loose problem.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A double -end bolt with anti -loose structure, including screw rod department and the thread department at both ends of screw rod department, top thread department is equipped with anti -loose structure;

[0007] Anti -loose structure includes slot, movable pin, groove, threaded sleeve, rotating lead screw, sliding block, a set of opposite inclined sliding groove, a set of opposite limit block and lock nut, the slot is opened in top thread department, the movable pin is inserted into the slot, the groove is opened in movable pin, the threaded sleeve is fixedly installed in the groove top, the rotating lead screw is threadedly inserted into the threaded sleeve, the sliding block is slidingly installed in the groove bottom, and the upper end is movably connected with the rotating lead screw, a set of opposite inclined sliding groove is opened on both sides of sliding block, a set of opposite limit block is movably installed on the bottom of movable pin both sides, and the rear end is connected with sliding block, the lock nut is hung and twisted on top thread department.

[0008] Further, the rear end of the rotating lead screw is provided with an external hexagonal head.

[0009] Furthermore, the rear ends of a set of relative limiting blocks are respectively slidably mounted on corresponding inclined slides via sliders.

[0010] Furthermore, the movable pin has circular holes on both sides corresponding to a set of relative limiting blocks.

[0011] Furthermore, the top threaded portion has strip-shaped holes on both sides corresponding to a set of relative limiting blocks.

[0012] Furthermore, a pressing head is provided at the upper end of the movable pin.

[0013] Furthermore, the locking nut has an annular groove corresponding to a set of relative limiting blocks.

[0014] This utility model provides a double-ended bolt with an anti-loosening structure, which has the following beneficial effects: by providing an anti-loosening structure in the top threaded part, after the locking nut is tightened, by inserting the movable pin into the appropriate position in the top threaded part and rotating the screw, a set of relative limiting blocks are driven to extend and be locked into the annular groove of the locking nut, thereby achieving the purpose of limiting and achieving the anti-loosening effect of the double-ended bolt. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a double-ended bolt with an anti-loosening structure according to the present invention.

[0016] Figure 2 This is an appearance drawing of the double-headed bolt of this utility model.

[0017] Figure 3 This is a cross-sectional view of the double-headed bolt of this utility model.

[0018] Figure 4 This is a side sectional view of the movable pin described in this utility model.

[0019] Figure 5 This is a schematic diagram of the limiting block of this utility model.

[0020] Figure 6 This is a cross-sectional view of the locking nut described in this utility model.

[0021] In the diagram: 1. Screw section; 2. Threaded section; 3. Slot; 4. Movable pin; 5. Groove; 6. Threaded sleeve; 7. Rotating screw; 8. Sliding block; 9. Inclined slide; 10. Limiting block; 11. Locking nut; 12. External hexagonal head; 13. Sliding block; 14. Circular hole; 15. Strip hole; 16. Pressing head; 17. Annular groove. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] Please see Figures 1 to 6 As shown, this application embodiment provides a double-ended bolt with an anti-loosening structure, including a screw portion 1 and threaded portions 2 located at both ends of the screw portion 1. An anti-loosening structure is provided in the top threaded portion 2. The anti-loosening structure includes a slot 3, a movable pin 4, a groove 5, a threaded sleeve 6, a rotating screw 7, a sliding block 8, a set of opposing inclined grooves 9, a set of opposing limiting blocks 10, and a locking nut 11. The slot 3 is opened in the top threaded portion 2, the movable pin 4 is inserted into the slot 3, the groove 5 is opened in the movable pin 4, the threaded sleeve 6 is fixedly installed in the top of the groove 5, the rotating screw 7 is threadedly inserted into the threaded sleeve 6, the sliding block 8 is slidably installed in the bottom of the groove 5, and its upper end is movably connected to the rotating screw 7 through a fastening bearing. A set of opposing inclined grooves 9 are opened on both sides of the sliding block 8, a set of opposing limiting blocks 10 are movably installed on both sides of the bottom of the movable pin 4, and their rear ends are connected to the sliding block 8. The locking nut 11 is suspended on the top threaded portion 2.

[0024] In this embodiment, during the installation of the double-ended bolt, the bottom threaded part 2 is first screwed into the carrier one, the screw part 1 passes through the carrier two, and the locking nut 11 is screwed onto the top threaded part 2 for fixation. Then, the movable pin 4 is inserted into the slot 3 of the top threaded part 2 at a suitable position, so that a set of relative limiting blocks 10 correspond to the position of the locking nut 11. Then, the rotating screw 7 is rotated clockwise, which drives the sliding block 8 to slide downward and pushes a set of relative limiting blocks 10 out of the movable pin 4 and the top threaded part 2, thereby limiting the locking nut 11 to achieve the purpose of preventing loosening.

[0025] In some embodiments, an external hexagonal head 12 is installed at the rear end of the rotating screw 7 to facilitate turning the rotating screw 7.

[0026] In some embodiments, the rear ends of a set of relative limiting blocks 10 are slidably mounted on the corresponding inclined slide grooves 9 via sliders 13. When the slider 8 moves upward, it causes the set of relative limiting blocks 10 to retract into the movable pin 4. Conversely, when the slider 8 moves downward, it causes the set of relative limiting blocks 10 to extend out of the movable pin 4.

[0027] In some embodiments, the movable pin 4 has circular holes 14 on both sides corresponding to a set of relative limiting blocks 10, which facilitates the movement of the set of relative limiting blocks 10.

[0028] In some embodiments, the top threaded portion 2 has strip-shaped holes 15 on both sides corresponding to a set of relative limiting blocks 10, so that the front ends of the set of relative limiting blocks 10 can extend out of the top threaded portion 2.

[0029] In some embodiments, a pressing head 16 is provided at the upper end of the movable pin 4 to facilitate the insertion of the movable pin 4.

[0030] In some embodiments, the locking nut 11 has an annular groove 17 corresponding to a set of relative limiting blocks 10. The front ends of the set of relative limiting blocks 10 are clamped in the annular groove 17 to facilitate the limiting of the locking nut 11.

[0031] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A double-ended bolt with an anti-loosening structure, comprising a threaded portion (1) and threaded portions (2) located at both ends of the threaded portion (1), characterized in that, The top threaded part (2) is provided with an anti-loosening structure; The anti-loosening structure includes a slot (3), a movable pin (4), a groove (5), a threaded sleeve (6), a rotating screw (7), a sliding block (8), a set of opposing inclined grooves (9), a set of opposing limiting blocks (10), and a locking nut (11). The slot (3) is opened in the top threaded part (2). The movable pin (4) is inserted into the slot (3). The groove (5) is opened in the movable pin (4). The threaded sleeve (6) is fixedly installed in the top of the groove (5). The rotating screw (7) is threadedly inserted into the threaded sleeve (6). The sliding block (8) is slidably installed in the bottom of the groove (5) and its upper end is movably connected to the rotating screw (7). A set of opposing inclined grooves (9) are opened on both sides of the sliding block (8). A set of opposing limiting blocks (10) are movably installed on both sides of the bottom of the movable pin (4) and their rear ends are connected to the sliding block (8). The locking nut (11) is suspended on the top threaded part (2).

2. A double-ended bolt with an anti-loosening structure according to claim 1, characterized in that, The rear end of the rotating lead screw (7) is equipped with an external hexagonal head (12).

3. A double-ended bolt with an anti-loosening structure according to claim 1, characterized in that, A set of relative limiting blocks (10) are slidably mounted on the corresponding inclined slide grooves (9) via sliders (13) at their rear ends.

4. A double-ended bolt with an anti-loosening structure according to claim 1, characterized in that, The movable pin (4) has circular holes (14) on both sides corresponding to a set of relative limiting blocks (10).

5. A double-ended bolt with an anti-loosening structure according to claim 1, characterized in that, The top threaded part (2) has strip holes (15) on both sides corresponding to a set of relative limiting blocks (10).

6. A double-ended bolt with an anti-loosening structure according to claim 1, characterized in that, The upper end of the movable pin (4) is provided with a pressing head (16).

7. A double-ended bolt with an anti-loosening structure according to claim 1, characterized in that, The locking nut (11) has an annular groove (17) corresponding to a set of relative limiting blocks (10).

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