Screw structure with enhanced tensile strength

Abstract

The utility model discloses a screw rod structure with enhanced tensile strength, which comprises a screw rod main body, the outer wall of the screw rod main body is in threaded connection with a nut, the outer wall of the screw rod main body is sleeved with a disc spring, the outer wall of the screw rod main body is in threaded connection with a first flange plate, and the other side of the first flange plate is in contact with the other nut. The outer wall of the screw body is sleeved with a second flange plate, the second flange plate is connected with the first flange plate through a bolt, one side of the second flange plate is fixedly connected with a planetary screw transmission mechanism, one side of the screw body is fixedly connected with a buffering mechanism, a planetary carrier is fixedly connected to the top of the first flange plate, and a planetary gear is rotationally connected to the top of the planetary carrier. The gear ring is fixedly connected to the inner wall area of the reaction kettle and meshed with the planetary gear, the transmission rod is fixedly connected to the driving source, and the sun gear is fixedly connected to one end of the transmission rod. According to the utility model, local damage caused by stress concentration can be prevented, and pressure fluctuation can be buffered at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw structure glue technical field especially, relates to a screw structure with enhanced tensile strength. BACKGROUND

[0002] In the reaction kettle system, screw as the core function component, mainly bear power transmission, axial displacement control and sealing adjustment triple effect. It is through helical structure converts the rotation into axial thrust while supporting the mixing device and the kettle body quick separation and reset operation.

[0003] However, the traditional screw is generally single thread bearing, easy to appear stress concentration, lead to local premature damage, the maximum stress peak is higher, simultaneously in the face pressure fluctuation, impact and so on dynamic load, the traditional screw lacks effective buffer and energy dissipation mechanism, easy to fail because of instantaneous overload. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcoming of prior art, and provides a screw structure with enhanced tensile strength.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A screw structure with enhanced tensile strength, including screw main part, the screw main part outer wall is connected with nut through thread, and the screw main part outer wall is connected with flange plate no.

[0007] As a further scheme of the utility model: the planetary screw transmission mechanism includes planet carrier, planetary gear, gear ring, transmission rod and sun gear, and the planet carrier is fixedly connected to the top of flange plate no.

[0008] As a further scheme of the utility model: the planetary gear is rotatably connected to the top of planet carrier, and the gear ring is fixedly connected to the inner wall area of reaction kettle, and the gear ring is engaged with the planetary gear.

[0009] As a further scheme of the utility model: the transmission rod is fixedly connected to the driving source, and the sun gear is fixedly connected to one end of transmission rod, and the sun gear is engaged with the planetary gear.

[0010] As a further scheme of the utility model: the buffer mechanism includes ball head seat, damper, spring, connecting seat and ball head main body, and the ball head main body is fixedly connected to the bottom of screw main part.

[0011] As a further scheme of the utility model: the ball head main body is connected with a ball head seat in interference fit, and the ball head seat is fixedly connected with a damper at the bottom.

[0012] As a further scheme of the utility model: the damper is filled with hydraulic oil, a spring is sleeved on the outer wall of the telescopic end of the damper, and the telescopic end of the damper is fixedly connected with a connecting seat.

[0013] Compared with the prior art, the utility model provides a screw rod structure with enhanced tensile strength, which has the following beneficial effects:

[0014] 1. The screw rod structure with enhanced tensile strength, when the axial tensile load is generated due to the pressure in the reaction kettle, the planetary screw rod transmission mechanism divides the load borne by the screw rod body to the transmission pair screw thread through multi-stage thread meshing, forms a multi-path force transmission mechanism, the disc spring is deformed under pressure and absorbs impact energy to avoid stress concentration, the flange plate one and the flange plate two are bolted to form a rigid support ring to inhibit transverse vibration, and the buffer mechanism dissipates energy through deformation under extreme load to prevent brittle fracture caused by sudden stress increase, thereby, the maximum stress peak value is reduced, the superposition of stress bending is avoided, the system limit load capacity is improved, and the tensile strength of the structure is enhanced.

[0015] 2. The screw rod structure with enhanced tensile strength, when the external power source drives the sun gear to rotate through the transmission rod, the sun gear and the planetary gear form meshing transmission, the planetary gear rotates around its own axis under the drive of the sun gear and is constrained by the gear ring. Revolves along the inner wall of the gear ring, the planet carrier converts the compound motion of the planetary gear into the linear motion of the screw rod body in the axial direction in this process, the planetary gear and the transmission rod and the gear ring form multi-contact line meshing, thereby, the local stress concentration is significantly reduced by dispersing the single-point load to multiple contact lines, and the overall tensile strength of the screw rod body is improved.

[0016] 3. The screw rod structure with enhanced tensile strength, when the screw rod body receives axial or radial dynamic load, the ball head body forms a spherical pair connection through the interference fit ball head seat, allows a range of multidirectional deflection, thereby eliminating motion interference and dispersing local stress, the ball head seat converts the impact load into the compound deformation of the damper and the spring, the load is transmitted to the telescopic degree of the damper through the ball head seat, the hydraulic oil in the damper generates a nonlinear flow resistance when the piston moves, and the spring generates secondary buffering by elastic compression, after the impact peak value, the elastic potential energy stored in the spring drives the spring to move in the opposite direction, and the hydraulic oil backflow speed is controlled by the throttle hole, and the slow reset is realized, thereby, the impact load can be instantaneously reduced, the dynamic impact energy is converted into controllable heat energy and elastic potential energy through mechanical path optimization, and the tensile strength of the screw rod body structure is improved.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a front view of a screw structure with enhanced tensile strength proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the planetary screw transmission mechanism in a screw structure with enhanced tensile strength proposed in this utility model;

[0020] Figure 3 An exploded view of the planetary screw transmission mechanism in a screw structure with enhanced tensile strength proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the buffer mechanism in a screw structure with enhanced tensile strength proposed in this utility model;

[0022] Figure 5 This is an exploded view of the buffer mechanism in a screw structure with enhanced tensile strength proposed in this utility model.

[0023] In the diagram: 1. Screw body; 2. Nut; 3. Disc spring; 4. Flange 1; 5. Flange 2; 6. Planetary screw drive mechanism; 7. Buffer mechanism; 601. Planetary carrier; 602. Planetary gear; 603. Gear ring; 604. Drive rod; 605. Sun gear; 701. Ball head seat; 702. Damper; 703. Spring; 704. Connecting seat; 705. Ball head body. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term '' install '' '' connect '' '' connect '' '' set '' should do the broad sense understanding, for example, can be fixedly connected, set, also can be detachable connection, set, or integrally connected, set, for the ordinary skill in the art, can understand the concrete meaning of the above-mentioned term in the utility model according to specific circumstances.

[0027] A screw structure with enhanced tensile strength, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 It comprises screw body 1, the outer wall of screw body 1 is connected by screw nut 2, disc spring 3 is sleeved on the outer wall of screw body 1, flange plate one 4 is connected by screw thread on the outer wall of screw body 1, and the other side of flange plate one 4 is in contact with another screw nut 2, flange plate two 5 is sleeved on the outer wall of screw body 1, and flange plate two 5 is connected with flange plate one 4 by bolt, and one side of flange plate two 5 is fixedly connected with planetary screw transmission mechanism 6, and one side of screw body 1 is fixedly connected with buffer mechanism 7.

[0028] When the axial tensile load is generated by the pressure dialing in the reaction kettle, the planetary screw transmission mechanism 6 is connected by multi-stage thread engagement Part of the load borne by screw body 1 is shunted to the transmission pair thread, forming a multi-path force transmission mechanism, while the disc spring 3 is deformed under pressure and absorbs impact energy to avoid stress concentration, the flange plate one 4 and the flange plate two 5 are bolted to form a rigid support ring to suppress transverse vibration, the buffer mechanism 7 dissipates energy by deformation under extreme load, prevents stress from suddenly increasing to cause brittle fracture, thereby reducing the maximum stress peak, avoiding the superposition of stress bending, and improving the system ultimate load capacity, thereby enhancing the tensile strength of the structure.

[0029] In order to significantly improve the tensile strength of the screw system by using multi-contact line load distribution mechanism, as shown in Figure 2 And Figure 3 The planetary screw transmission mechanism 6 comprises planet carrier 601, planetary gear 602, gear ring 603, transmission rod 604 and sun gear 605, the planet carrier 601 is fixedly connected to the top of flange plate one 4, the planetary gear 602 is rotatably connected to the top of planet carrier 601, the gear ring 603 is fixedly connected to the inner wall area of the reaction kettle, and the gear ring 603 is engaged with the planetary gear 602, the transmission rod 604 is fixedly connected to the driving source, the sun gear 605 is fixedly connected to one end of the transmission rod 604, and the sun gear 605 is engaged with the planetary gear 602.

[0030] When the external power source drives the sun gear 605 to rotate through the transmission rod 604, the sun gear 605 is engaged with the planetary gear 602 to form meshing transmission.

[0031] The planetary gear 602 rotates around its axis under the drive of the sun gear 605 while being constrained by the ring gear 603. The planetary carrier 601 converts the compound motion of the planetary gear 602 into linear motion of the screw body 1 axis during the revolution along the inner wall of the ring gear 603. The multi-contact line engagement between the planetary gear 602, the transmission rod 604, and the ring gear 603 disperses the single-point load to multiple contact lines, significantly reducing local stress concentration and improving the overall tensile strength of the screw body 1.

[0032] To achieve dynamic load buffering and energy dissipation, as shown in Figure 4 and Figure 5 The buffering mechanism 7 includes a ball head seat 701, a damper 702, a spring 703, a connecting seat 704, and a ball head body 705. The ball head body 705 is fixedly connected to the bottom of the screw body 1. The ball head seat 701 is connected to the outer surface of the ball head body 705 through interference fit. The damper 702 is fixedly connected to the bottom of the ball head seat 701. The damper 702 is filled with hydraulic oil. The spring 703 is sleeved on the outer wall of the extension end of the damper 702. The connecting seat 704 is fixedly connected to the extension end of the damper 702.

[0033] When the screw body 1 receives axial or radial dynamic load, the ball head body 705 is connected through the spherical pair of the interference-fitted ball head seat 701, allowing a range of multidirectional deflection, thereby eliminating motion interference and dispersing local stress. The ball head seat 701 converts the impact load into the combined deformation of the damper 702 and the spring 703. The load is transmitted to the extension degree of the damper 702 through the ball head seat 701. The hydraulic oil inside the damper 702 generates a nonlinear flow resistance when the piston moves. At the same time, the spring 703 is elastically compressed to form a secondary buffer. After the impact peak, the elastic potential energy stored in the spring 703 drives the spring 703 to move in the opposite direction. At the same time, the hydraulic oil backflow speed is controlled by the throttle hole, achieving slow reset. Thus, the impact load can be instantaneously reduced, and the dynamic impact energy is converted into controllable thermal energy and elastic potential energy through mechanical path optimization, improving the tensile strength of the screw body 1 structure.

[0034] Working principle: When the axial tensile load is generated by the pressure in the reaction kettle, the planetary screw transmission mechanism 6 divides part of the load borne by the screw body 1 to the transmission pair screw through multi-stage thread engagement, forming a multi-path force transmission mechanism. At the same time, the disc spring 3 is deformed under pressure and absorbs impact energy to avoid stress concentration. The flange plate one 4 and the flange plate two 5 are bolted to form a rigid support ring to suppress transverse vibration. The buffering mechanism 7 dissipates energy through deformation under extreme load to prevent brittle fracture caused by sudden stress increase,

[0035] When the external power source drives the sun gear 605 to rotate through the transmission rod 604, the sun gear 605 and the planetary gear 602 form meshing transmission.

[0036] The planetary gear 602 rotates around its own axis under the drive of the sun gear 605 while being constrained by the ring gear 603. The planetary gear 602 revolves along the inner wall of the ring gear 603, and in this process, the planetary carrier 601 converts the compound motion of the planetary gear 602 into the linear motion of the screw body 1 in the axial direction, and the planetary gear 602 forms a multi-contact line meshing between the transmission rod 604 and the ring gear 603,

[0037] When the screw body 1 receives an axial or radial dynamic load, the ball head body 705 is connected through the interference fit of the ball head seat 701 to form a spherical pair connection, allowing a range of multidirectional deflection, thereby eliminating motion interference and dispersing local stress, and the ball head seat 701 converts the impact load into the combined deformation of the damper 702 and the spring 703, and the load is transmitted to the extension degree of the damper 702 through the ball head seat 701, the hydraulic oil in the interior generates a nonlinear flow resistance when the piston moves, and at the same time, the spring 703 is elastically compressed to form a secondary buffer, after the impact peak, the elastic potential energy stored in the spring 703 drives the spring 703 to move in the opposite direction, and at the same time, the hydraulic oil backflow speed is controlled by the throttle hole, and slow resetting is realized.

[0038] The above merely describes a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacements or changes within the technical range disclosed by the present application, and all of these should be covered within the protection scope of the present application.

Claims

1. A screw structure with enhanced tensile strength, comprising a screw body (1), characterized in that, The outer wall of the screw body (1) is connected to a nut (2) by a thread, and a disc spring (3) is sleeved on the outer wall of the screw body (1). The outer wall of the screw body (1) is connected to a flange one (4) by a thread, and the other side of the flange one (4) is in contact with another nut (2). The outer wall of the screw body (1) is sleeved to a flange two (5), and the flange two (5) is connected to the flange one (4) by bolts. A planetary screw transmission mechanism (6) is fixedly connected to one side of the flange two (5), and a buffer mechanism (7) is fixedly connected to one side of the screw body (1).

2. The screw structure with enhanced tensile strength according to claim 1, characterized in that, The planetary screw drive mechanism (6) includes a planet carrier (601), a planetary gear (602), a gear ring (603), a drive rod (604), and a sun gear (605). The planet carrier (601) is fixedly connected to the top of the flange (4).

3. A screw structure with enhanced tensile strength according to claim 2, characterized in that, The planetary gear (602) is rotatably connected to the top of the planetary carrier (601), and the gear ring (603) is fixedly connected to the inner wall area of ​​the reactor, and the gear ring (603) meshes with the planetary gear (602).

4. A screw structure with enhanced tensile strength according to claim 2, characterized in that, The transmission rod (604) is fixedly connected to the drive source, and the sun gear (605) is fixedly connected to one end of the transmission rod (604), and the sun gear (605) meshes with the planetary gear (602).

5. A screw structure with enhanced tensile strength according to claim 1, characterized in that, The buffer mechanism (7) includes a ball head seat (701), a damper (702), a spring (703), a connecting seat (704), and a ball head body (705), and the ball head body (705) is fixedly connected to the bottom of the screw body (1).

6. A screw structure with enhanced tensile strength according to claim 5, characterized in that, The ball head body (705) is interference-fitted with a ball head seat (701) on its outer surface, and a damper (702) is fixedly connected to the bottom of the ball head seat (701).

7. A screw structure with enhanced tensile strength according to claim 5, characterized in that, The damper (702) is filled with hydraulic oil, and a spring (703) is sleeved on the outer wall of the telescopic end of the damper (702). A connecting seat (704) is fixedly connected to the telescopic end of the damper (702).

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