High-torque bolt

Abstract

The high-torque bolt comprises a bolt body, a locking sleeve is fixedly connected to the outer wall of the upper portion of the bolt body, a groove is formed in the top of the bolt body, mounting holes are formed in the two sides of the locking sleeve, and the locking sleeve is detachably connected with a rotating assembly through two fixing assemblies; the fixing assembly comprises a connecting rod, the connecting rod slides in the mounting hole, a limiting block is welded to one side of the connecting rod, and the connecting rod and the limiting block are matched with one mounting hole in shape. By rotating fixing assemblies on the two sides of a locking sleeve, connecting rods and limiting blocks right correspond to mounting holes in position, then the two connecting rods are pressed at the same time, two reinforcing blocks on the inner side are pressed through the connecting rods, so that two moving blocks correspondingly deviate towards the inner side, the two reinforcing blocks are driven to be separated from the mounting holes, and the whole rotating assembly is separated from the locking sleeve; the rotating assembly is convenient to replace, practicability of the bolt body is improved, and resources are saved.

Description

Technical Field

[0001] The utility model relates to a high-torque bolt and belongs to the technical field of high-torque bolts. Background Art

[0002] Torque type high strength bolts are widely used in various industries, mainly in the fields of construction, bridges, machinery, ships, railways, roads, national defense, petroleum, chemical industry, etc. For example, in the field of machinery manufacturing, torque type high strength bolts can be used to manufacture various mechanical hinge points, couplings, Mira bearings, support roads, railways and other large projects.

[0003] In the prior art, for example, the Chinese patent number CN 216306437 U, "Constant torque bolt and fastener", includes a wrench head, a breaking part, a bolt head and a bolt body connected in sequence, and the bolt body is provided with a threaded part; the breaking part includes a deformable body, and the cross section of the deformable body is reduced along the direction from the wrench head to the bolt body; and the cross section of the small end of the deformable body is smaller than the cross section of the end of the bolt head close to the wrench head. Its beneficial effect is that during the installation process, the operator does not need to use a torque wrench, calibrate the torque, adjust the lever arm, etc., which simplifies the operation, improves the operating efficiency and the accuracy of the tightening torque, and is conducive to ensuring the reliability of the assembly structure; the installation and wrench operation is performed on the upper surface of the bolt head, and the installation operation can be performed outside the fuselage skin, and the operating space is less affected by the fuselage structure. The broken wrench head falls outside the fuselage and can be directly cleaned to avoid excess residue inside the fuselage structure.

[0004] However, in the prior art, when high-torque bolts are traditionally used, an open-end or adjustable wrench is used to clamp the hexagonal cap and gradually tighten it. When the torque reaches the designed value, the hexagonal cap breaks off from the twist-off point, thereby achieving the fixation or loosening of the high-torque bolt. However, workers are prone to jamming the wrench in the offset position of the hexagonal bolt head of the bolt, which will cause the torque to increase and the friction of the bolt head to be serious, which seriously makes it difficult to separate the locked object from the torque bolt, which is not conducive to the practicality of the torque bolt. If the hexagonal bolt head is severely worn, it needs to be thrown away as a whole, resulting in a waste of resources. Therefore, a practical high-torque bolt is designed. Utility Model Content

[0005] The purpose of the utility model is to design a high torque bolt in view of the above problems existing in the prior art, to overcome the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A high torque bolt comprises a bolt body, a locking sleeve is fixedly connected to the upper outer wall of the bolt body, a groove is provided on the top of the bolt body, mounting holes are provided on both sides of the locking sleeve, and the locking sleeve is detachably connected to a rotating assembly through two fixing assemblies;

[0008] The fixing assembly comprises a connecting rod, the connecting rod slides in the mounting hole, a limiting block is welded on one side of the connecting rod, and the connecting rod and the limiting block are adapted to the shape of a mounting hole.

[0009] Preferably, a slot is provided in the locking sleeve, the limiting block slides in the slot, and the slot is located in the mounting hole.

[0010] Preferably, the rotating assembly includes a hexagonal bolt head, the bottom of the hexagonal bolt head is fixedly connected with a fixing portion, the bottom of the hexagonal bolt head abuts against the top of the locking sleeve, and the fixing portion is movably sleeved on the inner ring of the top of the locking sleeve.

[0011] Preferably, two moving blocks and a reinforcing rib are welded to the bottom of the fixing portion.

[0012] Preferably, the reinforcing ribs are matched with the grooves, one of the reinforcing ribs is located between the two moving blocks, and a gap is provided between the moving blocks and the reinforcing ribs.

[0013] Preferably, a reinforcement block is welded on the outer side of each of the moving blocks, the reinforcement block is slidably sleeved in the mounting hole, and the shape is adapted to the mounting hole, and the outer side of the reinforcement block is in conflict with the inner side of the connecting rod.

[0014] Preferably, a plurality of anti-slip grooves are provided on the outer sides of the hexagonal bolt heads.

[0015] Beneficial effects achieved by the utility model:

[0016] By setting fixed components on both sides of the rotating locking sleeve, the connecting rod and the limit block are made to correspond to the position of the installation hole, and then the two connecting rods are pressed at the same time, and the two inner reinforcement blocks are pressed by the connecting rods, so that the two moving blocks are offset to the inner side accordingly, and the two reinforcement blocks are driven to separate from the installation hole, so that the entire rotating assembly is separated from the locking sleeve, the rotating assembly is easy to replace, the practicality of the bolt body is improved, and resources are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 The overall cutaway structure schematic diagram shown;

[0019] Figure 3 for Figure 1 The three-dimensional structure diagram of the rotating assembly shown;

[0020] Figure 4 for Figure 1 Schematic diagram of the cross-section structure of the locking sleeve shown.

[0021] Figure numerals: 1. bolt body; 01. groove; 2. locking sleeve; 02. mounting hole; 3. rotating assembly; 31. hexagonal bolt head; 32. fixing part; 33. moving block; 34. reinforcing rib; 35. reinforcement block; 4. fixing assembly; 41. connecting rod; 42. limiting block; 5. slot; 6. anti-slip groove. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model. Example 1

[0023] like Figure 1-4 As shown, a high-torque bolt proposed by the utility model includes a bolt body 1, a locking sleeve 2 is fixedly connected to the upper outer wall of the bolt body 1, a groove 01 is opened on the top of the bolt body 1, mounting holes 02 are opened on both sides of the locking sleeve 2, and the locking sleeve 2 is detachably connected to a rotating component 3 through two fixing components 4; the fixing component 4 includes a connecting rod 41, the connecting rod 41 slides in the mounting hole 02, a limiting block 42 is welded on one side of the connecting rod 41, and the connecting rod 41 and the limiting block 42 are adapted to the shape of a mounting hole 02.

[0024] In this embodiment, a locking sleeve 2 is fixedly connected to the upper outer wall of the bolt body 1, and mounting holes 02 are opened on both sides of the locking sleeve 2. The mounting holes 02 are provided to facilitate the installation of the fixing components 4. The rotating components 3 can be fixed or separated by the fixing components 4 on both sides. If the rotating components 3 are highly worn and cannot be used, the fixing components 4 on both sides of the locking sleeve 2 are rotated to make the connecting rod 41 and the limit block 42 correspond to the positions of the mounting holes 02, and then the two connecting rods 41 are pressed at the same time. The rotating component 3 on the inner side is pressed by the connecting rods 41, so that the rotating component 3 can be separated from the locking sleeve 2, thereby preventing the wear of the rotating component 3 from affecting the use of the bolt body 1 and saving resources. Example 2

[0025] like Figure 1-4As shown, a high torque bolt proposed by the utility model, compared with embodiment 1, this embodiment also includes a locking sleeve 2 with a slot 5, a limit block 42 slides in the slot 5, the slot 5 is located in the mounting hole 02, and the rotating assembly 3 includes a hexagonal bolt head 31, the bottom of the hexagonal bolt head 31 is fixedly connected with a fixing portion 32, the bottom of the hexagonal bolt head 31 conflicts with the top of the locking sleeve 2, the fixing portion 32 is movably sleeved on the top inner ring of the locking sleeve 2, and the bottom of the fixing portion 32 is respectively Two moving blocks 33 and a reinforcing rib 34 are welded, and the reinforcing rib 34 is adapted to the groove 01. One reinforcing rib 34 is located between the two moving blocks 33. A gap is provided between the moving blocks 33 and the reinforcing rib 34. A reinforcing block 35 is welded to the outside of each moving block 33. The reinforcing block 35 is slidably sleeved in the mounting hole 02, and its shape is adapted to the mounting hole 02. The outside of the reinforcing block 35 is in conflict with the inner side of the connecting rod 41, and a plurality of anti-slip grooves 6 are provided on the outside of the hexagonal bolt head 31.

[0026] The locking sleeve 2 is provided with a card slot 5, and the limit block 42 slides in the card slot 5. When there is no need to replace the rotating assembly 3, the rotating connecting rod 41 makes the fixing assembly 4 as a whole not correspond to the mounting hole 02. The limit block 42 is stuck in the card slot 5 and offset from the mounting hole 02. The card slot 5 further limits the limit block 42 so that the limit block 42 can rotate inside the locking sleeve 2. If there is no need to replace the rotating assembly 3 temporarily, the fixing assembly 4 can also be separated from the two sides of the locking sleeve 2. The reinforcement block 35 is pushed by external force, and the reinforcement block 35 pushes the inner moving block 33. A gap is provided between the moving block 33 and the reinforcement rib 34, so that the two reinforcement blocks 35 can be separated from the mounting hole 02. When the reinforcement block 35 is separated from the mounting hole 02, the reinforcement rib 34 can be separated from the groove 01, and the entire rotating assembly 3 is separated from the locking sleeve 2. It is convenient to disassemble and replace the rotating assembly 3, and the practicality of the bolt body 1 is improved. The anti-skid groove 6 is provided to increase the friction.

[0027] Working principle: When using an open or adjustable wrench to fall off or tighten, if the surface of the hexagonal bolt head 31 is severely damaged, the fixing components 4 on both sides of the locking sleeve 2 are rotated to make the connecting rod 41 and the limit block 42 correspond to the position of the mounting hole 02, and then the two connecting rods 41 are pressed at the same time. The two inner reinforcement blocks 35 are pressed through the connecting rods 41, so that the two moving blocks 33 are correspondingly offset to the inner side, driving the two reinforcement blocks 35 to disengage from the mounting hole 02, and the entire rotating component 3 is disengaged from the locking sleeve 2, which makes it easy to replace the rotating component 3, making the bolt body 1 more practical, increasing the service life of the bolt body 1, and saving resources.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high torque bolt, comprising a bolt body (1), characterized in that: A locking sleeve (2) is fixedly connected to the upper outer wall of the bolt body (1); a groove (01) is provided on the top of the bolt body (1); mounting holes (02) are provided on both sides of the locking sleeve (2); and the locking sleeve (2) is detachably connected to a rotating component (3) via two fixing components (4); The fixing assembly (4) comprises a connecting rod (41), the connecting rod (41) slides in the mounting hole (02), a limiting block (42) is welded to one side of the connecting rod (41), and the connecting rod (41) and the limiting block (42) are adapted to the shape of a mounting hole (02).

2. A high torque bolt according to claim 1, characterized in that: A slot (5) is provided in the locking sleeve (2), the limit block (42) slides in the slot (5), and the slot (5) is located in the mounting hole (02).

3. A high torque bolt according to claim 1, characterized in that: The rotating assembly (3) comprises a hexagonal bolt head (31), the bottom of the hexagonal bolt head (31) is fixedly connected to a fixing portion (32), the bottom of the hexagonal bolt head (31) abuts against the top of the locking sleeve (2), and the fixing portion (32) is movably sleeved on the inner ring of the top of the locking sleeve (2).

4. A high torque bolt according to claim 3, characterized in that: Two moving blocks (33) and a reinforcing rib (34) are respectively welded to the bottom of the fixing portion (32).

5. A high torque bolt according to claim 4, characterized in that: The reinforcing rib (34) is adapted to the groove (01); one of the reinforcing ribs (34) is located between the two moving blocks (33); and a gap is provided between the moving blocks (33) and the reinforcing rib (34).

6. A high torque bolt according to claim 4, characterized in that: A reinforcement block (35) is welded to the outside of each moving block (33); the reinforcement block (35) is slidably sleeved in the mounting hole (02) and has a shape that matches the mounting hole (02); the outside of the reinforcement block (35) abuts against the inside of the connecting rod (41).

7. A high torque bolt according to claim 3, characterized in that: A plurality of anti-slip grooves (6) are provided on the outer sides of the hexagonal bolt heads (31).

Images