High-strength fastening screw with pressure-bearing structure

Abstract

The utility model relates to a high-strength fastening screw with a pressure-bearing structure, which is characterized in that the top of a mounting screw rod is movably sleeved with a bearing nut, the outer side of the bottom of the mounting screw rod is screwed with a transmission screw cylinder through threads, the outer side of the middle of the mounting screw rod is screwed with a fixed screw cylinder through threads, and the top of the mounting screw rod is movably sleeved with a reinforcing mechanism; after the top of the bearing nut is overlarge in pressure provided by the outer side, the bearing nut drives the rotating screw barrel and the sleeving screw barrel to vertically move on the outer side of the mounting screw, and the rotating screw barrel and the sleeving screw barrel are continuously subjected to abutting force abutting against the inner wall of the screw barrel in the downward moving process; further, the inner side walls of the rotating screw cylinder and the sleeving screw cylinder are tightly attached to the outer side wall of the mounting screw rod, the contact friction force of the outer side wall of the mounting screw rod to the inner side walls of the rotating screw cylinder and the sleeving screw cylinder is increased, the bearing nut cannot continuously move at will, and the stability of the whole mounting screw rod in the inserting and using process is improved from the top of the mounting screw rod.

Description

Technical Field

[0001] This utility model relates to the field of fastening screw technology, specifically a high-strength fastening screw with a pressure-bearing structure. Background Technology

[0002] Screws are tools that use the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually fasten objects and machine parts. High-strength fastening screws are fasteners specially designed to withstand high loads and high stress environments. They are widely used in various critical fields. Through special material selection, heat treatment processes, and structural design, they have higher tensile strength, yield strength, and fatigue life than ordinary screws, ensuring stable connection performance even under extreme conditions.

[0003] In practical use, traditional fastening screws, when inserted into pre-drilled slots, are tightened from the bottom using a nut. However, there is no reinforcement at the top of the screw, making it highly susceptible to damage and breakage under external impact or continuous pressure. Furthermore, using a simple nut for bottom tightening often results in insufficient clamping force, making the screw prone to detaching from the slot under resonance with external objects, thus affecting the stability of the connection. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a high-strength fastening screw with a pressure-bearing structure. This solves the problem that when a fastening screw is inserted into a pre-drilled slot, a nut is used to tighten and limit its position from the bottom. However, there is no other reinforcement structure at the top of the screw, which makes it easy for the top of the screw to break under external impact or continuous pressure. Furthermore, using a nut with a relatively simple structure to tighten and limit the screw from the bottom often results in insufficient tightening force, making it easy for the screw to detach from the slot under the resonance force generated by external objects, thus affecting the stability of the screw's connection to the object.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design a high-strength fastening screw with a pressure-bearing structure, including a mounting screw rod, a receiving nut is movably sleeved on the top of the mounting screw rod, a transmission screw cylinder is threaded to the outer side of the bottom of the mounting screw rod, and a fixing screw cylinder is threaded to the outer side of the middle part of the mounting screw rod.

[0006] The top of the mounting screw is equipped with a reinforcing mechanism;

[0007] A clamping mechanism is provided between the outer sides of the fixed screw and the transmission screw.

[0008] Preferably, the reinforcement mechanism includes a clamping sleeve and a rotating screw cylinder. A limiting screw cylinder is threadedly connected to the outer side of the mounting screw. The clamping sleeve is fixedly installed on the top of the limiting screw cylinder, and the inner diameter of the clamping sleeve is larger than the diameter of the rotating screw cylinder. The rotating screw cylinder is movably sleeved on the top of the outer side of the mounting screw, and the rotating screw cylinder is located above the outer side of the clamping screw cylinder. A connecting screw cylinder is fixedly installed on the top of the rotating screw cylinder, and a receiving nut is fixedly installed on the top of the connecting screw cylinder. The outer side of the mounting screw and the inner sidewalls of the limiting screw cylinder, the rotating screw cylinder, and the connecting screw cylinder are all provided with mutually compatible threads.

[0009] Preferably, both the outer side of the rotating screw and the middle part of the side of the sleeve screw are provided with vertical movable grooves.

[0010] Preferably, the clamping mechanism includes a bonding plate and a pushing plate. A connecting plate is fixedly installed on the outer wall of the fixed screw cylinder and the transmission screw cylinder, and there are several sets of connecting plates. A first fixing rod and a second fixing rod are rotatably installed between the sides of every two sets of connecting plates through bearings. The first fixing rod is located outside the fixed screw cylinder, and the second fixing rod is located outside the transmission screw cylinder. The bonding plate is fixedly sleeved at the middle of the outer side of the first fixing rod, and the pushing plate is fixedly sleeved at the middle of the outer side of the second fixing rod. The bonding plate and the pushing plate are vertically arranged outside the mounting screw.

[0011] Preferably, the bottom of the bonding plate and the top of the push plate are provided with mounting grooves, and the inner sidewalls of the two sets of mounting grooves are respectively fixedly installed with a first rotating rod and a second rotating rod. A transmission plate is movably installed between the inner sides of the two sets of mounting grooves, and the first rotating rod and the second rotating rod are respectively fixedly sleeved on the outer sides of the transmission plate.

[0012] Preferably, an anti-slip friction pad is fixedly bonded to the outer surface of each of the bonding plates.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model provides a limiting screw cylinder at the top of the mounting screw, and a clamping sleeve at the top of the limiting screw cylinder. Both the rotating screw cylinder and the sleeve screw cylinder are screwed to the top of the mounting screw. This allows the rotating screw cylinder to be vertically inserted into the clamping sleeve after being screwed on. As the rotating screw cylinder moves into the clamping sleeve, its outer side is pressed against the inner wall of the clamping sleeve, causing slight deformation of both the rotating screw cylinder and the sleeve screw cylinder. Combined with the structure of the movable groove, the walls of the rotating screw cylinder and the sleeve screw cylinder on both sides of the movable groove can move closer to each other. By reducing the overall inner diameter of the rotating screw and the sleeve screw, when the top of the receiving nut is subjected to excessive pressure from the outside, the receiving nut causes the rotating screw and the sleeve screw to move vertically outside the mounting rod. During the downward movement of the rotating screw and the sleeve screw, they are continuously subjected to the resistance force against the inner wall of the screw, which in turn makes the inner sidewalls of the rotating screw and the sleeve screw fit tightly against the outer sidewall of the mounting rod. This increases the contact friction between the outer sidewall of the mounting rod and the inner sidewalls of the rotating screw and the sleeve screw, preventing the receiving nut from moving arbitrarily and improving the overall pressure-bearing capacity of the structure. This improves the overall stability of the mounting rod during insertion and use.

[0015] 2. This utility model features a fixed screw cylinder and a transmission screw cylinder on both sides of the bottom of the mounting screw. The side ends of the bonding plate and the push plate are respectively positioned outside the fixed screw cylinder and the transmission screw cylinder by combining a first fixed rod and a second fixed rod. Furthermore, the two sides of the transmission plate are rotatably connected to the bottom of the bonding plate and the top of the push plate by combining a first rotating rod and a second rotating rod. This allows the transmission screw cylinder to move vertically upwards from the bottom of the mounting screw after the mounting screw is turned and the fixed screw cylinder is clamped and limited. This provides a corresponding vertical pushing force to the push plate. As the two sides of the push plate and the transmission plate rotate relative to each other, the push plate and the transmission plate can change from a vertical to a horizontal state outside the fixed screw cylinder and the transmission screw cylinder. This allows the top surface of the bonding plate to adhere to the bottom surface of the slot, providing a resisting and limiting force from the bottom of the mounting screw, further improving the stability of the mounting screw during insertion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the limiting screw barrel and rotating screw barrel structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the unfolded structure of the fixed screw barrel and the transmission screw barrel of this utility model;

[0019] Figure 4This is a schematic diagram of the retraction structure of the fixed screw barrel and the transmission screw barrel of this utility model;

[0020] In the diagram: 1. Install the screw;

[0021] 2. Limiting screw; 21. Clamping sleeve; 22. Rotating screw; 23. Sleeve screw; 24. Receiving nut; 25. Movable groove;

[0022] 3. Fixed screw barrel; 31. Transmission screw barrel; 32. Connecting plate; 33. First fixing rod; 34. Second fixing rod; 35. Adhesive plate; 36. Push plate; 37. Mounting groove; 38. Transmission plate;

[0023] 4. Anti-slip friction pad;

[0024] 5. First rotating rod; 51. Second rotating rod. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] Example 1: A high-strength fastening screw with a pressure-bearing structure, see [link / reference] Figures 1 to 4 The mounting screw 1 is movably fitted with a receiving nut 24 at its top. The mounting screw 1 is threadedly connected to a limiting screw 2 on its outer side. A clamping sleeve 21 is fixedly installed on the top of the limiting screw 2, and the inner diameter of the clamping sleeve 21 is larger than the diameter of the rotating screw 22. The rotating screw 22 is movably fitted with a rotating screw 22 on its outer top, and the rotating screw 22 is located above the outside of the clamping screw. A sleeve screw 23 is fixedly installed on the top of the rotating screw 22, and a receiving nut 24 is fixedly installed on the top of the sleeve screw 23. The outer side of the mounting screw 1 and the inner sidewalls of the limiting screw 2, the rotating screw 22 and the sleeve screw 23 are all provided with mutually compatible threads.

[0027] Both the outer side of the rotating screw 22 and the middle of the side of the sleeve screw 23 are vertically provided with movable grooves 25.

[0028] When it is necessary to insert and fix external objects using the mounting screw 1, the mounting screw 1, along with its bottom outer vertically arranged fitting plate 35 and push plate 36, is simultaneously inserted through the slot for installation. Then, the limiting screw 2 is screwed to move vertically outside the mounting screw 1, allowing it to be inserted into the upper inner side of the corresponding slot. Next, a rotating screw 22 and a sleeve screw 23, matching the length of the top of the mounting screw 1, are selected. The rotating screw 22 and the sleeve screw 23, along with the receiving nut 24, are then screwed onto the top of the mounting screw 1, so that both the rotating screw 22 and the sleeve screw 23 are positioned above the outer side of the clamping sleeve 21. The rotating screw 22 and the sleeve screw 23 are then screwed to descend vertically outside the mounting screw 1 until the bottom end of the rotating screw 22 is inserted into the clamping sleeve. Inside the cylinder 21, after the top surface of the receiving nut 24 bears excessive external pressure, the rotating cylinder 22 and the rotating cylinder 22 descend vertically outside the mounting screw 1. After the bottom end of the rotating cylinder 22 is inserted into the inner side of the clamping sleeve 21, under the action of the inner side wall of the clamping sleeve 21 against the outer side wall of the rotating cylinder 22, and under the action of the movable deformation structure of the movable groove 25, the rotating cylinder 22 and the sleeve cylinder 23 contract inward outside the mounting screw 1, thereby improving the fit between the rotating cylinder 22 and the sleeve cylinder 23 and the outer side wall of the mounting screw 1, further increasing the contact friction between the outer side wall of the mounting screw 1 and the inner side wall of the rotating cylinder 22 and the sleeve cylinder 23, so that the receiving nut 24 will not move arbitrarily continuously, and improving the overall stability of the mounting screw 1 during insertion and use from the top of the mounting screw 1.

[0029] For details, see Figures 1 to 4 The bottom outer side of the mounting screw 1 is threaded with a transmission screw 31, and the middle outer side of the mounting screw 1 is threaded with a fixing screw 3.

[0030] Connecting plates 32 are fixedly installed on the outer walls of the fixed screw cylinder 3 and the transmission screw cylinder 31. There are several sets of connecting plates 32. A first fixing rod 33 and a second fixing rod 34 are rotatably installed between the sides of every two sets of connecting plates 32 via bearings. The first fixing rod 33 is located outside the fixed screw cylinder 3, and the second fixing rod 34 is located outside the transmission screw cylinder. A bonding plate 35 is fixedly sleeved at the middle of the outer side of the first fixing rod 33. An anti-slip friction pad 4 is fixedly bonded to the outer surface of each bonding plate 35. A push plate 36 is fixedly sleeved at the middle of the outer side of the second fixing rod 34. The bonding plate 35 and the push plate 36 are vertically arranged outside the mounting screw 1.

[0031] The bottom of the bonding plate 35 and the top of the push plate 36 are both provided with mounting grooves 37. The inner sidewalls of the two sets of mounting grooves 37 are respectively fixedly installed with a first rotating rod 5 and a second rotating rod 51. The transmission plate 38 is movably installed between the inner sides of the two sets of mounting grooves 37, and the first rotating rod 5 and the second rotating rod 51 are respectively fixedly sleeved on the outer sides of the transmission plate 38.

[0032] After the mounting screw 1, the fixing screw 3, and the transmission screw 31 simultaneously pass through the slot, positioning the fixing screw 3 and the transmission screw 31 below the slot, and the fixing screw 3 is positioned below the inner side of the slot, the outer wall of the fixing screw 3 is clamped and limited using appropriate clamps. Then, the mounting screw 1 is turned, causing the transmission screw 31 to vertically rise and move at its outer bottom during rotation. Combined with the second fixing rod 34, the push plate 36 can rotate relative to the outside of the transmission screw 31, and then... The first rotating rod 5 and the second rotating rod 51 cause the transmission plate 38 to rotate relative to the top of the push plate 36 and the bottom of the bonding plate 35. This allows the push plate 36 to be converted into a pushing force on the bonding plate 35 by the vertical movement force of the transmission screw 31. This allows the bonding plate 35 and the push plate 36 to change from a vertical state to a horizontal state outside the fixed screw 3 and the transmission screw 31. As a result, the top surface of the bonding plate 35 can be attached to the bottom surface of the slot, and a resisting and limiting force is provided to it from the bottom of the mounting screw 1, thereby ensuring the stability of the mounting screw 1 during insertion and use.

[0033] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0034] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A high-strength fastening screw having a pressure-bearing structure, comprising a mounting shank (1), characterized in that, The mounting screw (1) top movable sleeve is provided with a receiving nut (24), the bottom of the mounting screw (1) is screwed with a transmission screw cylinder (31) outside, the middle of the mounting screw (1) is screwed with a fixed screw cylinder (3) outside; The mounting screw (1) top movable sleeve is provided with a reinforcing mechanism; The fixed screw cylinder (3) and the transmission screw cylinder (31) outside are provided with a abutting mechanism.

2. The high-strength fastening screw having a pressure-receiving structure according to claim 1, wherein The reinforcing mechanism includes an abutting sleeve (21) and a rotating screw cylinder (22), the mounting screw (1) outside is screwed with a limiting screw cylinder (2), the top of the limiting screw cylinder (2) is fixedly installed with an abutting sleeve (21), the top of the mounting screw (1) outside is movably sleeved with a rotating screw cylinder (22) through screw thread, the top of the rotating screw cylinder (22) is fixedly installed with a sleeving screw cylinder (23), the top of the sleeving screw cylinder (23) is fixedly installed with a receiving nut (24).

3. The high-strength fastening screw having a pressure-receiving structure according to claim 2, wherein The rotating screw cylinder (22) outside and the sleeving screw cylinder (23) side edge middle are vertically provided with movable grooves (25).

4. The high-strength fastening screw having a pressure-receiving structure according to claim 1, wherein The abutting mechanism includes a fitting plate (35) and a push plate (36), the fixed screw cylinder (3) and the transmission screw cylinder (31) outside wall are fixedly installed with a connecting plate (32), and the number of the connecting plate (32) is several groups, and every two groups of the connecting plate (32) side edge are respectively rotatably installed with a first fixed rod (33) and a second fixed rod (34) through a bearing, the first fixed rod (33) is located outside the fixed screw cylinder (3), the first fixed rod (33) outside middle end is fixedly sleeved with a fitting plate (35), and the second fixed rod (34) outside middle end is fixedly sleeved with a push plate (36).

5. The high-strength fastening screw having a pressure-receiving structure according to claim 4, wherein The bottom of the fitting plate (35) and the top of the push plate (36) are provided with mounting grooves (37), and the inner side walls of the two groups of mounting grooves (37) are respectively fixedly installed with a first rotating rod (5) and a second rotating rod (51), and the inner sides between the two groups of mounting grooves (37) are movably installed with a transmission plate (38), and the first rotating rod (5) and the second rotating rod (51) are respectively fixedly sleeved on the two sides outside the transmission plate (38).

6. The high-strength fastening screw having a pressure-receiving structure according to claim 5, wherein The outer side surface of each fitting plate (35) is fixedly bonded with an antiskid friction pad (4).

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