Double-end adjusting bolt

Abstract

The utility model relates to the technical field of double-end adjusting bolts, and provides a double-end adjusting bolt which comprises a supporting frame and a rotating shaft, the rotating shaft is rotationally connected in the supporting frame, a fixing assembly is arranged at the bottom of the supporting frame, a transmission adjusting assembly is arranged outside the rotating shaft, a groove is formed in the supporting frame, and a gear is arranged on the rotating shaft. The gears are located in the grooves, and the two ends of the rotating shaft are slidably connected with external threaded pipes in a sleeving mode. By means of the technical scheme, the problems that in the related technology, the length of an existing two-way bolt is fixed, when a person needs to use a long bolt, the length of the two-way bolt cannot be adjusted, when the length of the two-way bolt is too long, the stability of the two-way bolt is not high, and when the outside applies pressure to the middle of the two-way bolt, the length of the two-way bolt cannot be adjusted are solved. And the middle part of the two-way bolt is recessed.

Description

Technical Field

[0001] The utility model relates to the technical field of double-headed adjusting bolts, and specifically, to a double-headed adjusting bolt. Background Art

[0002] A stud, also called a double-headed screw or double-headed stud, is used for the fixed connection function of machinery. Both ends of the stud have threads, and the middle screw rod can be thick or thin. It is generally used in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, tower cranes, long-span steel structures, and large buildings, etc.

[0003] The length of the existing bidirectional bolt is fixed. When a long bolt is needed, the length of the bidirectional bolt cannot be adjusted. Moreover, when the length of the bidirectional screw is too long, the stability of the bidirectional bolt will be low. When an external pressure is applied to the middle of the bidirectional bolt, the middle of the bidirectional bolt will be concave.

[0004] Therefore, improvements are made to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a double-headed adjusting bolt, which solves the problems in the related art that the length of the existing bidirectional bolt is fixed, when a long bolt is needed, the length of the bidirectional bolt cannot be adjusted, and when the length of the bidirectional screw is too long, the stability of the bidirectional bolt is low, and when an external pressure is applied to the middle of the bidirectional bolt, the middle of the bidirectional bolt will be concave.

[0006] The technical solution of the utility model is as follows: including

[0007] a support frame and a rotating shaft, the rotating shaft is rotatably connected in the support frame;

[0008] a fixing component, the fixing component is arranged at the bottom of the support frame;

[0009] a transmission and adjustment component, the transmission and adjustment component is arranged outside the rotating shaft;

[0010] The transmission and adjustment component includes a groove, the groove is opened in the support frame, a gear is arranged on the rotating shaft, the gear is located in the groove, and external threaded tubes are slidably sleeved and connected at both ends of the rotating shaft.

[0011] As a further technical solution, docking grooves are opened at both ends of the rotating shaft, threaded grooves are opened in the docking grooves, extension shafts are inserted and connected in the docking grooves, and a central hole is opened in the extension shafts.

[0012] As a further technical solution, a screw rod is inserted and connected in the central hole. One end of the screw rod is screwed and connected in the thread groove. Positioning grooves are formed on both opposite end faces in the external thread tube. A pair of convex layers are arranged on the surfaces of the rotating shaft and the extension shaft.

[0013] As a further technical solution, the convex layer is slidably inserted in the positioning groove. Fixing grooves are formed on the end faces of the rotating shaft and the extension shaft. The inner part of the external thread tube is slidably fitted in the fixing groove.

[0014] As a further technical solution, a convex block is arranged on the side end face of the external thread tube. A bolt is screwed and connected in the convex block. The bolt is supported in the fixing groove.

[0015] As a further technical solution, the fixing assembly includes a base. The base is arranged at the bottom of the support frame. A socket groove is formed on the surface of the base. A pair of circular grooves are formed in the socket groove. A pressing seat is inserted and connected in the socket groove.

[0016] As a further technical solution, a positioning column is arranged at the bottom of the pressing seat. The positioning column is inserted in the circular groove. A pair of mounting holes are formed at both ends of the surfaces of the pressing seat and the base.

[0017] As a further technical solution, the cross sections of the docking grooves and the insertion connection parts of the extension shafts are all of polygonal structures.

[0018] The working principle and beneficial effects of the present utility model are as follows:

[0019] 1. In the present utility model, a transmission adjustment assembly is provided. Through the interaction of structures such as gears, external thread tubes, docking grooves, thread grooves, extension shafts, central holes, screw rods, convex layers, convex blocks, and bolts, the length of the rotating shaft can be increased through the extension shaft. An external thread tube is sleeved and connected on the rotating shaft and the extension shaft. The external thread tube can be adjusted arbitrarily in position to achieve the effect of different transmission positions. And the two external thread tubes can rotate coaxially. External thread tubes with different thread directions can be replaced, which has good use effects and practicability.

[0020] 2. In the present utility model, a fixing assembly is provided. Through the interaction of structures such as the base, socket groove, pressing seat, and positioning column, the support frame can be firmly fixed through the cooperation of the base and the pressing seat, and there will be no loosening or falling off. Description of the Drawings

[0021] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0022] Figure 1 It is a schematic structural diagram of the present utility model;

[0023] Figure 2 This is an axonometric sectional view of the present utility model;

[0024] Figure 3 This is an attachment of the present utility model Figure 1 Partial enlarged view of part A in the figure;

[0025] Figure 4 This is an attachment of the present utility model Figure 2 Partial enlarged view of part B in the figure;

[0026] In the figure: 1, support frame; 2, rotating shaft; 3, transmission adjustment component; 3-1, groove; 3-2, gear; 3-3, external thread tube; 3-4, docking groove; 3-5, thread groove; 3-6, extension shaft; 3-7, central hole; 3-8, screw; 3-9, positioning groove; 3-10, convex layer; 3-11, fixing groove; 3-12, convex block; 3-13, bolt; 4, fixing component; 4-1, base; 4-2, socket; 4-3, round groove; 4-4, pressing seat; 4-5, positioning column; 4-6, mounting hole. Specific implementation mode

[0027] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0028] As Figures 1 to 4 shown, this embodiment proposes a double-headed adjusting bolt, including

[0029] a support frame 1 and a rotating shaft 2, and the rotating shaft 2 is rotatably connected inside the support frame 1;

[0030] a fixing component 4, and the fixing component 4 is arranged at the bottom of the support frame 1;

[0031] a transmission adjustment component 3, and the transmission adjustment component 3 is arranged outside the rotating shaft 2;

[0032] The transmission adjustment assembly 3 includes a groove 3-1, the groove 3-1 is formed in the support frame 1, a gear 3-2 is arranged on the rotating shaft 2, the gear 3-2 is located in the groove 3-1, both ends of the rotating shaft 2 are slidably sleeved and connected with external thread tubes 3-3, docking grooves 3-4 are formed at both ends of the rotating shaft 2, thread grooves 3-5 are formed in the docking grooves 3-4, extension shafts 3-6 are inserted and connected in the docking grooves 3-4, a central hole 3-7 is formed in the extension shafts 3-6, a screw rod 3-8 is inserted and connected in the central hole 3-7, one end of the screw rod 3-8 is screwed and connected in the thread groove 3-5, positioning grooves 3-9 are formed on opposite end faces inside the external thread tubes 3-3, a pair of convex layers 3-10 are arranged on the surfaces of the rotating shaft 2 and the extension shafts 3-6, the convex layers 3-10 are slidably inserted in the positioning grooves 3-9, fixing grooves 3-11 are formed at the end faces of the rotating shaft 2 and the extension shafts 3-6, the inside of the external thread tubes 3-3 is slidably fitted in the fixing grooves 3-11, a convex block 3-12 is arranged on the side end face of the external thread tube 3-3, a bolt 3-13 is screwed in the convex block 3-12, and the bolt 3-13 is supported in the fixing groove 3-11.

[0033] In this embodiment, in order to achieve the effect of adjustable length of the double-section bolt 3-13, the transmission adjustment assembly 3 is designed. A groove 3-1 is formed at the top of the support frame 1, a gear 3-2 is arranged on the rotating shaft 2 and is located in the groove 3-1. The rotation of the rotating shaft 2 can be controlled by the transmission of the gear 3-2. An external thread tube 3-3 slides on the surface of the rotating shaft 2, and the external thread tube 3-3 can move on the surface of the rotating shaft 2. Docking grooves 3-4 are formed at both ends of the rotating shaft 2, thread grooves 3-5 are formed inside the docking grooves 3-4, extension shafts 3-6 are inserted and connected in the docking grooves 3-4. The extension shafts 3-6 have the same diameter as the rotating shaft 2, and a central hole 3-7 is formed inside the extension shafts 3-6. A screw rod 3-8 is inserted in the central hole 3-7, and one end of the screw rod 3-8 is screwed and connected in the thread groove 3-5, so that the extension shafts 3-6 and the rotating shaft 2 can be fixed. A pair of positioning grooves 3-9 are formed inside the external thread tubes 3-3, a pair of convex layers 3-10 are arranged on the surfaces of the rotating shaft 2 and the extension shafts 3-6, and the convex layers 3-10 are slidably inserted and connected with the positioning grooves 3-9, so that the external thread tubes 3-3 can be kept fixed and will not rotate. Fixing grooves 3-11 are formed, a convex layer 3-10 is arranged on the side end face of the external thread tube 3-3, the convex layer 3-10 is slidably fitted in the fixing groove 3-11 and the fixing groove 3-11 is formed, and a bolt 3-13 is in threaded fit in the fixing groove 3-11. The bolt 3-13 can be abutted in the fixing groove 3-11, so that the external thread tube 3-3 can be firmly fixed, and the position of the external thread tube 3-3 can be adjusted arbitrarily.

[0034] Further, the fixing component 4 includes a base 4-1, the base 4-1 is arranged at the bottom of the support frame 1, a socket groove 4-2 is formed on the surface of the base 4-1, a pair of circular grooves 4-3 are formed in the socket groove 4-2, a pressing seat 4-4 is inserted and connected in the socket groove 4-2, a positioning column 4-5 is arranged at the bottom of the pressing seat 4-4, the positioning column 4-5 is inserted in the circular groove 4-3, and a pair of mounting holes 4-6 are formed at both ends of the surfaces of the pressing seat 4-4 and the base 4-1.

[0035] In this embodiment, in order to achieve the effect of firmly fixing the support frame 1, a fixing component 4 is designed. A base 4-1 is arranged at the bottom of the support frame 1. A horizontal socket groove 4-2 is formed on the surface of the base 4-1. Two circular grooves 4-3 are formed at the bottom in the socket groove 4-2. A pressing seat 4-4 is sleeved and connected in the socket groove 4-2. A positioning column 4-5 is arranged at the bottom of the pressing seat 4-4. The positioning column 4-5 can be inserted into the circular groove 4-3, so that the base 4-1 and the pressing seat 4-4 can be closely attached together. Two mounting holes 4-6 are formed at both ends of the surfaces of the base 4-1 and the pressing seat 4-4, and fasteners can be inserted for fixing.

[0036] Further, the cross-sections of the insertion connection parts of the docking groove 3-4 and the extension shaft 3-6 are both of polygonal structures.

[0037] In this embodiment, through the polygonal structure, after the extension shaft 3-6 is inserted into the docking groove 3-4, it can rotate coaxially with the rotating shaft 2 without misalignment or slipping.

[0038] When in use, the support frame 1 is installed through the base 4-1, the pressing seat 4-4 is sleeved in the socket groove 4-2, and at the same time the positioning column 4-5 is inserted into the circular groove 4-3. Fasteners are passed through the mounting holes 4-6 for fixed connection. After the position is fixed, the extension shaft 3-6 is inserted into the docking groove 3-4, and a screw 3-8 is inserted into the central hole 3-7 and screwed into the thread groove 3-5 to fix after docking. Then the external thread tube 3-3 is sleeved on the extension shaft 3-6, the convex layer 3-10 is docked with the positioning groove 3-9. After being sleeved, the position is adjusted. After the position is determined, the bolt 3-13 is screwed into the fixing groove 3-11 and supported in the fixing groove 3-11. The rotating shaft 2 can be driven to rotate through the gear 3-2 to achieve the effect of simultaneously controlling the rotation of the two external thread tubes 3-3, and the thread direction can be adjusted by replacing the external thread sleeve.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-headed adjusting bolt, characterized in that: include A support frame (1) and a rotating shaft (2), wherein the rotating shaft (2) is rotatably connected inside the support frame (1); A fixing component (4), wherein the fixing component (4) is arranged at the bottom of the supporting frame (1); A transmission adjustment component (3), wherein the transmission adjustment component (3) is arranged outside the rotating shaft (2); The transmission adjustment component (3) comprises a groove (3-1), the groove (3-1) is opened in the support frame (1), a gear (3-2) is arranged on the rotating shaft (2), the gear (3-2) is located in the groove (3-1), and both ends of the rotating shaft (2) are slidably connected with external threaded pipes (3-3).

2. A double-headed adjusting bolt according to claim 1, characterized in that: Both ends of the rotating shaft (2) are provided with docking grooves (3-4), a thread groove (3-5) is provided in the docking groove (3-4), an extension shaft (3-6) is inserted and connected in the docking groove (3-4), and a center hole (3-7) is provided in the extension shaft (3-6).

3. A double-headed adjusting bolt according to claim 2, characterized in that: A screw rod (3-8) is inserted and connected in the central hole (3-7), one end of the screw rod (3-8) is screwed and connected in the thread groove (3-5), positioning grooves (3-9) are provided on opposite end surfaces of the external threaded tube (3-3), and a pair of convex layers (3-10) are provided on the surfaces of the rotating shaft and the extension shaft (3-6).

4. A double-headed adjusting bolt according to claim 3, characterized in that: The convex layer (3-10) is slidably inserted into the positioning groove (3-9), the end faces of the rotating shaft (2) and the extension shaft (3-6) are both provided with fixing grooves (3-11), and the interior of the external threaded tube (3-3) is slidably fitted into the fixing groove (3-11).

5. A double-headed adjusting bolt according to claim 4, characterized in that: A convex block (3-12) is provided on the side end surface of the externally threaded tube (3-3), a bolt (3-13) is screwed into the convex block (3-12), and the bolt (3-13) is supported in the fixing groove (3-11).

6. A double-headed adjusting bolt according to claim 1, characterized in that: The fixing assembly (4) comprises a base (4-1), the base (4-1) being arranged at the bottom of the support frame (1), a sleeve groove (4-2) being provided on the surface of the base (4-1), a pair of circular grooves (4-3) being provided in the sleeve groove (4-2), and a pressing seat (4-4) being inserted and connected in the sleeve groove (4-2).

7. A double-headed adjusting bolt according to claim 6, characterized in that: A positioning column (4-5) is provided at the bottom of the pressing seat (4-4), and the positioning column (4-5) is inserted into the circular groove (4-3). A pair of mounting holes (4-6) are provided at both ends of the surface of the pressing seat (4-4) and the base (4-1).

8. A double-headed adjusting bolt according to claim 2, characterized in that: The cross-sections of the butt joint groove (3-4) and the extension shaft (3-6) at the insertion connection are both polygonal structures.

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