Special-shaped combined bolt for fastening connection

Abstract

The utility model discloses a special-shaped combined bolt for tight connection, which comprises a first bolt and a second bolt, the first bolt is internally provided with an internal thread, the lower end of the first bolt is fixedly provided with an expansion sleeve, the expansion sleeve is internally provided with a fixing structure, the periphery of the interior of the expansion sleeve is provided with sliding chutes, and the sliding chutes are fixedly connected with the expansion sleeve. An extrusion rod is rotatably arranged at the lower end of the second bolt, the expansion sleeve and the extrusion rod can be connected with each other through a connecting structure, the fixing structure comprises a sliding ring and a plurality of clamping blocks, supporting rods are fixedly arranged on the sides, close to each other in pairs, of the clamping blocks, and the supporting rods and the sliding ring are connected with each other through a supporting structure. Inclined plates are fixedly arranged on the sides, close to each other, of every two supporting rods, an expansion sleeve is extruded through an extrusion rod, so that the fastening effect of a bolt is improved, and meanwhile, a second screw pushes a fixing structure, so that the fixing structure further fixes an object.

Description

Technical Field

[0001] The utility model relates to the field of design of special-shaped combined bolts, in particular to a special-shaped combined bolt for connection and fastening. Background Art

[0002] When existing bolts are used to fix objects, they are usually fixed by connecting the threads on the bolts with the threads on the objects. However, when the bolts are fixed to the objects through the threads, collision and extrusion will occur between the threads, resulting in a certain amount of wear. After long-term use, they are easily affected by vibrations, resulting in looseness, which to a certain extent reduces the work efficiency of the staff. Utility Model Content

[0003] The purpose of the utility model is to provide a special-shaped combined bolt for connecting and tightening in order to solve the above-mentioned problem. When using this device, the expansion sleeve is squeezed by the squeezing rod to improve the tightening effect of the bolt. At the same time, the second screw pushes the fixing structure to further fix the fixing structure to the object.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A special-shaped combined bolt for connecting and fastening comprises a first bolt and a second bolt, wherein the first bolt is provided with an internal thread inside, an expansion sleeve is fixedly provided at the lower end of the first bolt, a fixing structure is provided inside the expansion sleeve, and sliding grooves are provided around the inside of the expansion sleeve, an extrusion rod is rotatably provided at the lower end of the second bolt, and the expansion sleeve and the extrusion rod can be connected to each other through a connecting structure.

[0006] The fixed structure includes a slip ring and a plurality of clamping blocks, support rods are fixedly provided on the sides of the clamping blocks that are close to each other, the support rods and the slip rings are connected to each other through the supporting structure, inclined plates are fixedly provided on the sides of the support rods that are close to each other, an opening is provided on the extrusion rod near the inclined plate, and the supporting structure includes a support plate.

[0007] Furthermore, the second bolt is threadedly sleeved inside the first bolt.

[0008] Furthermore, the support plate is fixedly arranged around the inner periphery of the slip ring, and a connecting spring is fixedly connected between the support plate and the inclined plate near the support rod.

[0009] Furthermore, the support rod is slidably arranged inside the support plate.

[0010] Furthermore, the slip ring is arranged inside the slide groove.

[0011] Furthermore, the inclined plate is slidably arranged around the interior of the slip ring.

[0012] Furthermore, the connection structure comprises a limit block and a limit groove, wherein the limit block is fixedly arranged around the outside of the extrusion rod, and the limit groove is arranged around the inside of the first bolt and the expansion sleeve.

[0013] Furthermore, the limiting block is slidably arranged inside the limiting groove.

[0014] With the above structure, when using the device, first, install the first bolt inside the object, and then install the second bolt through the internal thread of the first bolt. When the second thread enters the inside of the first thread, the extrusion rod on the second thread squeezes the expansion sleeve on the first bolt, so that the expansion bolt and the object are fit and connected. At the same time, the fixed structure moves through the slide groove, and then the second bolt pushes the inclined plate on the fixed structure. Finally, the inclined plate drives the block to move and be fixed to the object through the support rod.

[0015] In summary, the beneficial effect of the utility model is that when the second bolt is placed inside the first bolt, the extrusion rod on the second bolt fits and squeezes the expansion sleeve on the first bolt, reducing the wear between the threads, thereby improving the tightness of the first bolt to the object. At the same time, the second bolt squeezes the inclined plate, so that the inclined plate drives the block to be fixed to the object through the support rod, further improving the tightness of the special-shaped bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a front view of the utility model;

[0018] Figure 2 It is an axonometric view of the utility model when in use;

[0019] Figure 3 It is an axonometric view of the utility model when not in use;

[0020] Figure 4 It is an exploded view of the utility model;

[0021] Figure 5 It is an axonometric view of the fixed structure of the utility model;

[0022] Figure 6It is an axonometric view of the utility model close to the connecting spring;

[0023] Figure 7 yes Figure 6 Enlarged view of point A.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. First bolt; 2. Second bolt; 3. Expansion casing; 4. Slide groove; 5. Fixed structure; 6. Support structure; 7. Extrusion rod; 8. Connecting structure; 501. Slip ring; 502. Block; 503. Inclined plate; 504. Support rod; 601. Support plate; 602. Connecting spring; 801. Limit block; 802. Limit groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0027] See also Figure 1-Figure 7 As shown, the utility model provides a special-shaped combined bolt for connecting and fastening, including a first bolt 1 and a second bolt 2. The interior of the first bolt 1 is provided with an internal thread, which is convenient for the second bolt 2 to be combined with the first bolt 1 and improves the fastening effect of the first bolt 1. The lower end of the first bolt 1 is fixedly provided with an expansion sleeve 3, which is a connecting tube with an opening. It is in a contracted state before use. When the internal cavity is squeezed, it expands and fits with the object to achieve fixation. It belongs to the prior art and will not be described in detail. The interior of the expansion sleeve 3 is provided with a fixing structure 5. Through the second screw The bolt 2 squeezes the fixed structure 5, which is convenient for improving the tightness of the first bolt 1 through the fixed structure 5. The expansion sleeve 3 is provided with sliding grooves 4 all around the inside to facilitate the movement of the fixed structure 5. The lower end of the second bolt 2 is rotatably provided with an extrusion rod 7. The extrusion rod 7 has an opening and does not contact the fixed structure 5. It is convenient to fix the object through the fixed structure 5 after the expansion sleeve 3 is expanded. The expansion sleeve 3 and the extrusion rod 7 can be connected to each other through a connecting structure 8, which is convenient for the extrusion rod 7 to move through the connecting structure 8 to prevent affecting the work of the fixed structure 5.

[0028] The fixing structure 5 includes a slip ring 501 and a plurality of clamping blocks 502, and the object is fixed by the clamping blocks 502, thereby improving the fastening effect of the first bolt 1 on the object, and the sides of the clamping blocks 502 that are close to each other are fixedly provided with support rods 504, and the support rods 504 and the slip rings 501 are connected to each other through the supporting structure 6, and the sides of the support rods 504 that are close to each other are fixedly provided with inclined plates 503, which are pushed by the second bolt 2, thereby moving to one side through the inclined surface of the inclined block, and the extrusion rod 7 is provided with an opening near the inclined plate 503, and the supporting structure 6 includes a support plate 601.

[0029] Furthermore, the second bolt 2 is threadedly sleeved inside the first bolt 1. When the second bolt 2 enters the first bolt 1, it is convenient to squeeze the expansion sleeve 3 on the first bolt 1 through the squeezing rod 7 on the second thread, so that the expansion bolt can be fitted and connected to the object.

[0030] Furthermore, the support plate 601 is fixedly arranged around the inside of the slip ring 501, and a connecting spring 602 is fixedly connected between the support plate 601 and the inclined plate 503 near the support rod 504. The connecting spring 602 facilitates the inclined block to be in a reset state.

[0031] Furthermore, the support rod 504 is slidably arranged inside the support plate 601 , and the support rod 504 facilitates the horizontal movement of the inclined block and the clamping block 502 on the support rod 504 .

[0032] Furthermore, the slip ring 501 is arranged inside the slide groove 4 , and the slide groove 4 facilitates the subsequent fixing of the object through the clamping block 502 on the slip ring 501 .

[0033] Furthermore, the inclined plate 503 is slidably arranged around the inside of the slip ring 501 , and the inclined plate 503 facilitates the movement of the inclined plate 503 when the second bolt 2 presses the inclined plate 503 .

[0034] Furthermore, the connecting structure 8 includes a limit block 801 and a limit groove 802, the limit block 801 is fixedly arranged around the outside of the extrusion rod 7, and the limit groove 802 is opened around the inside of the first bolt 1 and the expansion sleeve 3. The extrusion rod 7 slides on the limit groove 802 inside the first bolt 1 and the expansion sleeve 3 through the limit block 801, thereby limiting the moving position of the extrusion rod 7.

[0035] Furthermore, the limiting block 801 is slidably disposed inside the limiting groove 802 , and the limiting block 801 and the limiting groove 802 are used to prevent the extrusion block from affecting the normal use of the fixing structure 5 .

[0036] With the above structure, when using the device, first, install the first bolt 1 inside the object, and then install the second bolt 2 through the internal thread of the first bolt 1. When the second thread enters the inside of the first thread, the extrusion rod 7 on the second thread squeezes the expansion sleeve 3 on the first bolt 1, so that the expansion bolt is fitted and connected with the object. At the same time, the fixed structure 5 moves through the slide groove 4, and then the second bolt 2 pushes the inclined plate 503 on the fixed structure 5. Finally, the inclined plate 503 drives the block 502 to move and be fixed to the object through the support rod 504.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A special-shaped combined bolt for connecting and fastening, comprising a first bolt (1) and a second bolt (2), characterized in that: The first bolt (1) is provided with an internal thread, an expansion sleeve (3) is fixedly provided at the lower end of the first bolt (1), a fixing structure (5) is provided inside the expansion sleeve (3), sliding grooves (4) are provided around the inside of the expansion sleeve (3), an extrusion rod (7) is rotatably provided at the lower end of the second bolt (2), and the expansion sleeve (3) and the extrusion rod (7) can be connected to each other via a connecting structure (8); The fixed structure (5) comprises a slip ring (501) and a plurality of clamping blocks (502); support rods (504) are fixedly provided on one side of the clamping blocks (502) where two of them are close to each other; the support rods (504) and the slip ring (501) are connected to each other via a support structure (6); inclined plates (503) are fixedly provided on one side of the support rods (504) where two of them are close to each other; an opening is provided on the extrusion rod (7) at a position close to the inclined plate (503); and the support structure (6) comprises a support plate (601).

2. A special-shaped combined bolt for connection and fastening according to claim 1, characterized in that: The second bolt (2) is threadably sleeved inside the first bolt (1).

3. The special-shaped combined bolt for connecting and fastening according to claim 1, characterized in that: The support plate (601) is fixedly arranged around the inside of the slip ring (501), and a connecting spring (602) is fixedly connected between the support plate (601) and the inclined plate (503) near the support rod (504).

4. The special-shaped combined bolt for connecting and fastening according to claim 1, characterized in that: The support rod (504) is slidably disposed inside the support plate (601).

5. The special-shaped combined bolt for connecting and fastening according to claim 1, characterized in that: The slip ring (501) is arranged inside the slide groove (4).

6. The special-shaped combined bolt for connecting and fastening according to claim 1, characterized in that: The inclined plate (503) is slidably arranged around the inside of the slip ring (501).

7. The special-shaped combined bolt for connecting and fastening according to claim 1, characterized in that: The connection structure (8) comprises a limit block (801) and a limit groove (802), wherein the limit block (801) is fixedly arranged around the outside of the extrusion rod (7), and the limit groove (802) is opened around the inside of the first bolt (1) and the expansion sleeve (3).

8. The special-shaped combined bolt for connection and fastening according to claim 7, characterized in that: The limiting block (801) is slidably arranged inside the limiting groove (802).

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