Adjustable double-bolt-head bolt

Abstract

The utility model relates to the technical field of bolts, in particular to an adjustable double-bolt-head bolt which comprises a first screw rod, a connecting rod, a connecting sleeve, a second screw rod and the like. A connecting rod is connected to one end of the first screw, a connecting sleeve is slidably connected to the connecting rod, a second screw is connected to the side, away from the first screw, of the connecting sleeve, and the connecting rod is located in the connecting sleeve. According to the bolt, the connecting rod, the connecting sleeve, the first clamping block, the pressing block and the ejector rod are arranged, when the first clamping block is located in the first clamping groove, the connecting sleeve cannot slide, when the first clamping block is separated from the first clamping groove, the connecting sleeve recovers sliding, then the connecting sleeve slides to be away from the second screw rod, and therefore the length of the bolt can be increased; the bolt is simple in structure and suitable for installation positions with different thickness or depth requirements, a worker can adjust the length of the bolt in real time according to actual needs, looseness or other potential safety hazards caused by improper length are reduced, and the optimal fastening effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, specifically, it relates to an adjustable double bolt head bolt. BACKGROUND

[0002] Double bolt head bolt, also known as double head screw or double head stud, is an indispensable fastener in the field of mechanical engineering. The unique feature of this bolt is that both ends are equipped with threads, while the middle part is designed as a thick rod or a thin rod of different diameters according to actual application requirements, to adapt to various installation environments and load requirements. The application range of double bolt head bolt is extremely wide, from mine machinery to bridge construction, to automobile and motorcycle manufacturing industry, and even to large building structures such as boiler steel structure and tower crane.

[0003] In these application scenarios, double bolt head bolt is mainly used to realize the fixed connection between mechanical parts, and it can provide stable and reliable connection effect, which is of key significance to ensure the safe operation of mechanical equipment and the structural integrity of buildings.

[0004] The length of the middle rod of the traditional double bolt head bolt is fixed, which cannot flexibly adapt to different thicknesses of the objects to be fixed. When fine adjustment of the installation distance is required or non-standard size components are encountered, the length-adjustable feature limits the application scenarios of double bolt head bolt, resulting in inconvenience in use. Secondly, double bolt head bolt is prone to rotation during tightening. Since both ends are equipped with threads, if the bolt itself cannot be effectively prevented from rotating when tightening the nut, unnecessary displacement of the bolt relative to the machine surface or the installation surface such as wall will occur, which not only affects the stability and reliability of the connection, but also may cause installation errors, increase the workload of subsequent adjustment, and even may cause safety hazards to the structure. SUMMARY

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide an adjustable double bolt head bolt.

[0006] An adjustable double bolt head bolt, comprising a first screw rod, a connecting rod, a connecting sleeve, a second screw rod, a first clamping block, a first elastic member, a pressing block and a top rod, the first screw rod has a connecting rod at one end, the connecting rod has a connecting sleeve connected in a sliding manner, the connecting sleeve has a second screw rod connected on the side away from the first screw rod, the connecting rod is located in the connecting sleeve, the connecting rod has a first clamping block connected in a sliding manner, the first clamping block and the connecting rod have a first elastic member connected therebetween, the connecting sleeve has a first clamping groove adapted to the first clamping block spaced apart in the axial direction, the connecting sleeve has at least two pressing blocks connected in a sliding manner along the circumference of the outer wall, the pressing blocks extend into the connecting rod, and the side of the pressing blocks close to the connecting rod has a top rod connected.

[0007] In the utility model one preferable embodiment, the first clamping block front and back both sides all have the inclined slot, and the top rod is all located in the inclined slot.

[0008] In the utility model one preferable embodiment, still include the soft pad, two press blocks are all connected with the soft pad on the side away from the connecting rod.

[0009] In the utility model one preferable embodiment, still include the fixed frame and locking assembly, and the connecting sleeve is connected with the fixed frame between left and right sides, and the fixed frame is connected with the locking assembly on left and right sides, and the locking assembly is connected with the connecting sleeve.

[0010] In the utility model one preferable embodiment, the locking assembly includes the second clamping block and the second elastic piece, and the second clamping block is slidably connected on the left and right sides of the fixed frame, and the second elastic piece is connected between the second clamping block and the fixed frame, and the connecting sleeve is spaced apart in the circumferential direction on the left and right sides and is provided with the second clamping groove matched with the second clamping block.

[0011] In the utility model one preferable embodiment, the locking assembly still includes the connecting plate, and the connecting plate is connected between the left and right second clamping blocks.

[0012] Beneficial effect is: the utility model discloses the connecting rod, connecting sleeve, first clamping block, press block and top rod are set, when the first clamping block is located in the first clamping groove, the connecting sleeve cannot slide, when the first clamping block is separated from the first clamping groove, make the connecting sleeve restore sliding, and the length of the bolt can be increased by sliding the connecting sleeve away from the second screw rod, which is suitable for installation positions of different thickness or depth requirements, and the length of the bolt can be adjusted in real time according to actual needs, so that loosening or other safety hazards caused by inappropriate length are reduced, and the best fastening effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0014] Figure 2 It is the connecting rod sectional view schematic diagram of the utility model.

[0015] Figure 3 It is the connecting sleeve sectional view schematic diagram of the utility model.

[0016] Figure 4 It is the fixed frame sectional view schematic diagram of the utility model.

[0017] Markings in the drawings: 1-first screw, 2-connecting rod, 3-connecting sleeve, 31-first clamping groove, 4-second screw, 5-first clamping block, 51-inclined slot, 6-first elastic piece, 7-press block, 8-top rod, 9-soft pad, 10-fixed frame, 11-second clamping groove, 12-second clamping block, 13-second elastic piece, 14-connecting plate. DETAILED DESCRIPTION

[0018] The utility model will be further described below in conjunction with specific embodiments, the illustrative embodiments of the utility model and the description are used to explain the utility model, but not as the limitation of the utility model.

[0019] A adjustable double bolt head bolt, as shown in Figures 1-4 The right end of the first screw rod 1 is fixedly connected with the connecting rod 2, the connecting rod 2 is slidably connected with the connecting sleeve 3, the side, away from the first screw rod 1, of the connecting sleeve 3 is fixedly connected with the second screw rod 4, the connecting rod 2 is located in the connecting sleeve 3, the first clamping block 5 is slidably connected in the connecting rod 2, the oblique grooves 51 are formed in the front and back sides of the first clamping block 5, the top rods 8 are located in the oblique grooves 51, the first elastic member 6 is fixedly connected between the first clamping block 5 and the connecting rod 2, the first elastic member 6 is set as a spiral spring, the first clamping grooves 31, which are adapted to the first clamping block 5, are axially spaced apart on the connecting sleeve 3, the two pressing blocks 7 are uniformly and slidably connected on the outer wall of the connecting sleeve 3 in the circumferential direction, the pressing blocks 7 extend into the connecting rod 2, the top rods 8 are fixedly connected to the side, close to the connecting rod 2, of the pressing blocks 7, the soft pads 9 are fixedly connected to the side, away from the connecting rod 2, of the two pressing blocks 7, the soft pads 9 can increase the friction of the pressing blocks 7 and improve the comfort of the pressing blocks 7, the fixed frames 10 are fixedly connected between the left and right sides of the connecting sleeve 3, the fixed frames 10 are connected with the locking assemblies on the left and right sides, and the locking assemblies are connected with the connecting sleeve 3.

[0020] As shown in Figures 2-4 The locking assemblies include the second clamping blocks 12, the second elastic members 13 and the connecting plates 14, the second clamping blocks 12 are slidably connected on the left and right sides of the fixed frames 10, the second elastic members 13 are fixedly connected between the second clamping blocks 12 and the fixed frames 10, the second elastic members 13 are set as spiral springs, the second clamping grooves 11, which are adapted to the second clamping blocks 12, are uniformly and circumferentially spaced apart on the left and right sides of the connecting sleeve 3, and the connecting plates 14 are fixedly connected between the left and right second clamping blocks 12 and located outside the connecting sleeve 3.

[0021] At the beginning, the bolt is fixed in the installation position through the fixing frame 10, the first clamping block 5 is located in the first clamping groove 31, so that the connecting sleeve 3 cannot slide, the second clamping block 12 is located in the second clamping groove 11, so that the first screw rod 1 and the second screw rod 4 cannot rotate, the bolt can be avoided from rotating when the nut is tightened, the stability and reliability of the bolt are improved, when the bolt needs to be installed, the two pressing blocks 7 are pressed at the same time to make them slide close to each other, so that the front and rear two top rods 8 move and press the inclined groove 51 of the first clamping block 5, so that the first clamping block 5 slides away from the first clamping groove 31, the first elastic piece 6 is compressed, so that the connecting sleeve 3 restores to slide, the connecting sleeve 3 is slid again to move away from the second screw rod 4, so that the length of the bolt can be increased, the bolt is suitable for installation positions with different thicknesses or depths, workers can adjust the length of the bolt according to actual needs, looseness or other safety hazards caused by unsuitable length are reduced, the best fastening effect is ensured, the problem of disassembly and reinstallation caused by inaccurate estimation is avoided, the work efficiency is improved, and material waste is reduced, the connecting plate 14 is moved downward again, so that the two second clamping blocks 12 move downward and away from the second clamping groove 11, the second elastic piece 13 is compressed, so that the first screw rod 1 and the second screw rod 4 restore to rotate, so that the bolt can be installed in the installation position, after installation is completed, the connecting plate 14 is loosened again, the second elastic piece 13 restores to the original state to make the second clamping block 12 clamped in the second clamping groove 11, so that the first screw rod 1 and the second screw rod 4 are fixed, the stability of the bolt is further improved, and safety hazards caused by the bolt are reduced.

[0022] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An adjustable double bolt head bolt, characterized by: The utility model relates to a first screw rod (1), connecting rod (2), connecting sleeve (3), second screw rod (4), first clamping block (5), first elastic member (6), press block (7) and ejector rod (8) are included, first screw rod (1) one end is connected with connecting rod (2), and connecting rod (2) is slidably connected with connecting sleeve (3), and the side, away from first screw rod (1) of connecting sleeve (3) is connected with second screw rod (4), and connecting rod (2) is located in connecting sleeve (3), and connecting rod (2) is slidably connected with first clamping block (5), and first clamping block (5) is connected with first elastic member (6) between connecting rod (2), and connecting sleeve (3) is spaced apart with first clamping block (5) of the first card slot (31) of axial direction along in adaptation, and connecting sleeve (3) outer wall is slidably connected with at least two press blocks (7) along the circumferential direction, and press block (7) all extend into connecting rod (2), and the side, close to connecting rod (2) of press block (7) is all connected with ejector rod (8).

2. An adjustable double bolt head bolt according to claim 1, wherein: The utility model relates to a first clamping block (5) front and back both sides are opened with inclined slot (51), and ejector rod (8) all are located in inclined slot (51).

3. A dual bolt head bolt of adjustable type according to claim 2, wherein: Still include soft pad (9), and the side, away from connecting rod (2) of two press blocks (7) is all connected with soft pad (9).

4. A dual bolt head bolt of the adjustable type according to claim 3 wherein: Still include fixed frame (10) and locking assembly, and connecting sleeve (3) between left and right sides is connected with fixed frame (10), and left and right sides of fixed frame (10) are all connected with locking assembly, and locking assembly all are connected with connecting sleeve (3).

5. A dual bolt head bolt of adjustable type according to claim 4, wherein: The utility model relates to a second clamping block (12) and second elastic member (13), and left and right sides of fixed frame (10) are slidably connected with second clamping block (12), and second clamping block (12) and fixed frame (10) between all are connected with second elastic member (13), and left and right sides of connecting sleeve (3) all are spaced apart with second clamping block (12) of the second card slot (11) of circumferential direction.

6. An adjustable double bolt head bolt according to claim 5, wherein: The utility model relates to a connecting plate (14), and left and right second clamping block (12) between are connected with connecting plate (14).

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