Damping structure for speed reduction transmission device

Abstract

The utility model discloses a damping structure used for a speed reduction transmission device, which comprises a main body unit and a damping unit, the main body unit comprises a mounting plate, a bottom plate is arranged above the mounting plate, a speed reducer is arranged on the bottom plate, the damping unit comprises a plurality of first vertical rods, and the plurality of first vertical rods are all fixed at the bottom of the bottom plate. A hollow column is fixed to the bottom of the first vertical rod, a plurality of second vertical rods are fixed to the top of the mounting plate and sleeved with first springs, one end of each first spring abuts against the hollow column, the other end of each first spring abuts against the mounting plate, and the second vertical rods penetrate through the hollow column and slide in the hollow column. External air enters the hollow column through the air inlet holes and the second air holes, the diameter of the air inlet holes is equal to that of the exhaust holes, and the number of the exhaust holes is larger than that of the redundant air inlet holes, so that the exhaust speed is far larger than the air inlet number, the air inlet speed is reduced, the first spring is prevented from quickly rebounding, and the speed reducer is prevented from quickly shaking up and down.

Description

TECHNICAL FIELD

[0001] The utility model relates to shock absorbing structure technical field especially relates to a shock absorbing structure for speed reducer. BACKGROUND

[0002] Speed reducer is a kind of speed reducer, reducer is a kind of independent component by being enclosed in rigid shell Gear transmission, worm transmission, gear, worm drive is composed, commonly used as the speed reducer between prime mover and working machine.In the prime mover and working machine or actuator, it plays the role of matching speed and transmitting torque, and is widely used in modern machinery, and the speed machine is generally used for low-speed and high-torque transmission equipment, and the motor, internal combustion engine or other high-speed rotating power is matched with the gear of the input shaft of the speed reducer, and the gear of the output shaft is engaged to achieve the purpose of speed reduction, and ordinary speed reducer also has several pairs of same principle gears to achieve the ideal speed reduction effect, and the gear ratio of the gear is the transmission ratio.

[0003] Publication No. CN 221323225 U discloses a self-cushioning speed reducer housing, under the action of two shock-absorbing mechanisms, the speed reducer connected with external equipment in use will be passively generated certain vibration force. Publication No. CN217633781 U discloses a special feed mechanical speed reducer, effectively solves the problem that the current special feed mechanical speed reducer is inconvenient to install and disassemble and inconvenient to real-time shock protection, realizes the purpose of convenient installation, disassembly and real-time shock protection of the special feed mechanical speed reducer, and is a very practical special feed mechanical speed reducer.

[0004] The prior art disclosed above uses spring for shock absorption, however, a single spring cannot absorb shock, when the speed reducer works and vibrates, the bottom plate drives the spring to compress, at this time, the spring will absorb part of the energy and play a certain shock absorption effect, but the spring needs to quickly recover to the original state after compression, at this time, the bottom plate will move up, and such repeated movement will cause the speed reducer to quickly vibrate up and down, and cannot achieve good shock absorption effect. UTILITY MODEL CONTENTS

[0005] (I) Utility model purpose

[0006] Therefore, the utility model aims at providing a shock absorbing structure for speed reducer, and the technical problem to be solved is that the prior art uses spring for shock absorption, however, a single spring cannot absorb shock, when the speed reducer works and vibrates, the bottom plate drives the spring to compress, at this time, the spring will absorb part of the energy and play a certain shock absorption effect, but the spring needs to quickly recover to the original state after compression, at this time, the bottom plate will move up, and such repeated movement will cause the speed reducer to quickly vibrate up and down, and cannot achieve good shock absorption effect.

[0007] (II) Technical solutions

[0008] To achieve the above technical purpose, the utility model provides a shock absorbing structure for speed reduction transmission device:

[0009] It includes main unit and shock absorbing unit, the main unit includes mounting plate, the mounting plate top is provided with the bottom plate, the bottom plate top is installed with the speed reducer, the shock absorbing unit includes a plurality of first vertical rod, a plurality of first vertical rod all are fixed to the bottom plate bottom, the first vertical rod bottom is fixed with the hollow column, the mounting plate top is fixed with a plurality of second vertical rod, the second vertical rod outside is equipped with the first spring, one end of first spring and hollow column abut, the other end of first spring and mounting plate abut, the second vertical rod passes through the hollow column and is located in the hollow column sliding, the second vertical rod extends to the one end fixed with the piston in the hollow column, the piston is sealed in the hollow column sliding, the hollow column bottom is equipped with a plurality of through -hole, the hollow column is provided with the buffer assembly for preventing the first spring rapid rebound on.

[0010] Preferably, the hollow column top is equipped with a plurality of first air holes, the hollow column top is fixed with a plurality of connecting pipes, and the connecting pipe and corresponding first air hole are communicated.

[0011] Preferably, the buffer assembly includes a first cylindrical plug slidingly fitted in the connecting pipe, a plurality of exhaust holes are equidistantly formed in the connecting pipe along its radial direction, the first cylindrical plug can block the exhaust holes, a tapered plug is fixed to the bottom of the first cylindrical plug, the diameter of the tapered plug gradually decreases from top to bottom in vertical cross section, the diameter of the middle part of the tapered plug is equal to the diameter of the first air hole, and the tapered plug can block the first air hole.

[0012] Preferably, a cylinder is fixed to the bottom of the tapered plug, an air inlet hole is formed in the first cylindrical plug and the tapered plug, and the air inlet hole is communicated with the cylinder, the diameter of the air inlet hole is equal to the diameter of the exhaust hole, a second cylindrical plug is slidingly connected in the cylinder, and the diameter of the second cylindrical plug is greater than the diameter of the air inlet hole.

[0013] Preferably, a plurality of second air holes are equidistantly formed in the outer side of the cylinder along its radial direction, the second air holes are located below the second cylindrical plug, a second spring is arranged in the cylinder, one end of the second spring is fixed to the inner wall of the bottom of the cylinder, the other end of the second spring is in contact with the second cylindrical plug, and a third air hole is formed in the bottom of the cylinder.

[0014] Preferably, an annular baffle is fixed to the inner wall of the top of the connecting pipe, and the diameter of the outer side of the first cylindrical plug is greater than the diameter of the inner side of the annular baffle.

[0015] From the above technical solutions, the present application has the following beneficial effects:

[0016] 1: When the shock absorber vibration drives the bottom plate, the first vertical rod and the hollow column to move down, the piston in the hollow column moves relatively upward at this time, so that the air in the hollow column enters the cylinder from the second air hole first, at this time the air blows the second cylindrical plug and drives the second cylindrical plug to move upward, when the second cylindrical plug blocks the air inlet hole, the air in the hollow column cannot be discharged, so that the air blows the first cylindrical plug and the conical plug, when the conical plug no longer blocks the first air hole and the first cylindrical plug no longer blocks the exhaust hole, the air in the hollow column is discharged to the outside from the first air hole and the exhaust hole, that is, this process makes the hollow column move downward outside the second vertical rod, and the first spring is compressed at this time, so that the first spring plays a role of shock absorption.

[0017] 2: When the first spring needs to recover to the original state after compression, the first cylindrical plug and the connecting pipe move downward under the action of gravity, so that the conical plug blocks the first air hole and the first cylindrical plug blocks the exhaust hole, at this time the second cylindrical plug falls onto the second spring, and the second cylindrical plug is located above the second air hole, when the first spring continues to rebound, the outside air impacts the second cylindrical plug and drives the second cylindrical plug to move downward, when the second cylindrical plug moves below the second air hole, at this time the outside air enters the hollow column through the air inlet hole and the second air hole, because the diameter of the air inlet hole is equal to the diameter of the exhaust hole, and the number of the exhaust holes is much more than the number of the air inlet holes, so that the exhaust speed is much greater than the air inlet quantity, so that the air inlet speed is slowed down, preventing the first spring from rebounding quickly, avoiding the rapid up-down shaking of the speed reducer. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0019] Figure 1 A schematic view of a shock absorption structure for a speed reduction transmission device is provided in the present application.

[0020] Figure 2 A schematic view of the structure at A in the present application is provided. Figure 1

[0021] Figure 3 A schematic view of the internal structure of the hollow column provided in the present application is provided.

[0022] Figure 4 A schematic view of the internal structure of the connecting pipe and the cylinder provided in the present application is provided.

[0023] ​BRIEF DESCRIPTION OF DRAWINGS: 100, main unit; 101, mounting plate; 102, bottom plate; 103, speed reducer; 200, damping unit; 201, first vertical rod; 202, hollow column; 203, second vertical rod; 204, first spring; 205, piston; 206, through hole; 207, first air hole; 208, connecting pipe; 209, exhaust hole; 210, first cylindrical plug; 211, air inlet hole; 212, cylinder; 213, second cylindrical plug; 214, second spring; 215, second air hole; 216, annular baffle; 217, third air hole; 218, conical plug. DETAILED DESCRIPTION

[0024] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application and uses. It should be understood that throughout the drawings, the same or like reference numerals are intended to represent the same or like parts or features. The various drawings are schematic illustrations only and are not necessarily drawn to scale. Certain portions of the drawings can be shown exaggerated in relation to other portions, for purposes of illustration and description.

[0025] REFERENCE Figures 1-4 :

[0026] For an embodiment of the utility model, provide a kind of damping structure for speed reduction transmission device, including main unit 100 and damping unit 200, main unit 100 includes mounting plate 101, mounting plate 101 top is provided with bottom plate 102, bottom plate 102 is installed with speed reducer 103, damping unit 200 includes multiple first vertical rod 201, multiple first vertical rod 201 are all fixed to bottom plate 102 bottom, first vertical rod 201 bottom is fixed with hollow column 202, mounting plate 101 top is fixed with multiple second vertical rod 203, first spring 204 is sleeved on the outside of second vertical rod 203, one end of first spring 204 and hollow column 202 abut, the other end of first spring 204 and mounting plate 101 abut, second vertical rod 203 passes through hollow column 202 and is located in the sliding of hollow column 202, one end fixed with piston 205 in the extension of second vertical rod 203 in hollow column 202, piston 205 is sealed in the sliding of hollow column 202, multiple through holes 206 are formed in the bottom of hollow column 202, and buffering assembly for preventing first spring 204 from rebounding quickly is arranged on hollow column 202.

[0027] When using, when speed reducer 103 works, vibration will be generated, the vibration of speed reducer 103 drives bottom plate 102 to descend, bottom plate 102 descends and drives first vertical rod 201 to descend, first vertical rod 201 descends and drives hollow column 202 to descend, so that hollow column 202 compresses first spring 204, and first spring 204 plays a role of shock absorption at this time.

[0028] The hollow column 202 is provided with a plurality of first air holes 207 at the top, and a plurality of connecting pipes 208 are fixed at the top of the hollow column 202 and communicated with the corresponding first air holes 207. The buffer assembly comprises a first cylindrical plug 210 slidingly fitted in the connecting pipe 208. A plurality of exhaust holes 209 are equidistantly formed on the outer side of the connecting pipe 208 along the radial direction. The first cylindrical plug 210 can block the exhaust holes 209. The first cylindrical plug 210 is fixed with a conical plug 218 at the bottom. The vertical cross-section diameter of the conical plug 218 gradually decreases from top to bottom. The diameter of the middle part of the conical plug 218 is equal to the diameter of the first air hole 207. The conical plug 218 can block the first air hole 207. The inner wall of the top of the connecting pipe 208 is fixed with an annular baffle 216. The outer diameter of the first cylindrical plug 210 is greater than the inner diameter of the annular baffle 216.

[0029] Further, the bottom of the conical plug 218 is fixed with a cylinder 212. The first cylindrical plug 210 and the conical plug 218 are provided with an air inlet hole 211. The air inlet hole 211 is communicated with the cylinder 212. The diameter of the air inlet hole 211 is equal to the diameter of the exhaust hole 209. The cylinder 212 is slidingly connected with a second cylindrical plug 213. The diameter of the second cylindrical plug 213 is greater than the diameter of the air inlet hole 211. A plurality of second air holes 215 are equidistantly formed on the outer side of the cylinder 212 along the radial direction. The second air holes 215 are located below the second cylindrical plug 213. The cylinder 212 is provided with a second spring 214. One end of the second spring 214 is fixed to the inner wall of the bottom of the cylinder 212. The other end of the second spring 214 is in contact with the second cylindrical plug 213. The bottom of the cylinder 212 is provided with a third air hole 217.

[0030] In use, when the hollow column 202 moves downward to compress the first spring 204, the piston 205 moves upward in the hollow column 202. At this time, the space in the hollow column 202 is compressed. Since the weight of the second cylindrical plug 213 is much smaller than the weight of the first cylindrical plug 210 and the conical plug 218, when the space in the hollow column 202 is compressed, the air in the hollow column 202 will first enter the cylinder 212 from the second air holes 215. At this time, the air blows the second cylindrical plug 213 upward. When the second cylindrical plug 213 blocks the air inlet hole 211, the air in the hollow column 202 cannot be discharged, so that the air blows the first cylindrical plug 210 and the conical plug 218. When the conical plug 218 no longer blocks the first air hole 207 and the first cylindrical plug 210 no longer blocks the exhaust hole 209, the air in the hollow column 202 is discharged from the first air hole 207 and the exhaust hole 209 to the outside;

[0031] When the first spring 204 needs to recover to the original state after compression, the first cylindrical plug 210 and the connecting pipe 208 move downward under the action of gravity, so that the conical plug 218 blocks the first air hole 207, and the first cylindrical plug 210 blocks the exhaust hole 209, at this time the second cylindrical plug 213 falls onto the second spring 214, and the second cylindrical plug 213 is located above the second air hole 215. When the first spring 204 continues to rebound, the external air impacts the second cylindrical plug 213, so that the second cylindrical plug 213 moves downward in the cylinder 212 and compresses the second spring 214. When the second cylindrical plug 213 moves below the second air hole 215, at this time the external air enters the hollow column 202 through the air inlet hole 211 and the second air hole 215. Since the diameter of the air inlet hole 211 is equal to the diameter of the exhaust hole 209, and the number of exhaust holes 209 is much larger than the number of air inlet holes 211, the exhaust speed is much greater than the intake speed, so that the intake speed is slowed down, preventing the first spring 204 from rebounding quickly, thereby playing a damping role. It should be noted that the spring constant of the second spring 214 is much smaller than the spring constant of the first spring 204, so that when the first spring 204 rebounds and drives the second cylindrical plug 213 to move, the second cylindrical plug 213 can compress the second spring 214.

[0032] The above describes the exemplary embodiments of the scheme proposed by the present disclosure in detail with reference to the preferred embodiments, however, those skilled in the art can understand that various modifications and improvements can be made to the above specific embodiments without departing from the concept of the present disclosure, and various technical features and structures proposed by the present disclosure can be combined without exceeding the protection scope of the present disclosure, and the protection scope of the present disclosure is determined by the appended claims.

Claims

1. A damping structure for a reduction gear, characterized by, The utility model relates to a damping device for a main unit of a wind turbine, and more particularly to a damping device for a main unit of a wind turbine. The utility model discloses a damping device for a main unit of a wind turbine, which comprises a main unit (100) and a damping unit (200). The damping unit (200) comprises a plurality of first vertical rods (201), each of which is fixed to the bottom of the bottom plate (102).

2. A damping structure for a reduction gear according to claim 1, characterized in that The bottom of each first vertical rod (201) is fixed with a hollow column (202).

3. A damping structure for a reduction gear according to claim 2, characterized in that The top of the mounting plate (101) is fixed with a plurality of second vertical rods (203).

4. A damping structure for a reduction gear according to claim 3, characterized in that The outer side of each second vertical rod (203) is sleeved with a first spring (204). One end of the first spring (204) abuts against the hollow column (202), and the other end of the first spring (204) abuts against the mounting plate (101). The second vertical rod (203) extends into the hollow column (202) and slides in the hollow column (202). The end of the second vertical rod (203) extending into the hollow column (202) is fixed with a piston (205). The piston (205) is sealed and slides in the hollow column (202). The bottom of the hollow column (202) is provided with a plurality of through holes (206). The top of the hollow column (202) is provided with a plurality of first air holes (207). The top of the hollow column (202) is fixed with a plurality of connecting pipes (208), and each connecting pipe (208) is in communication with a corresponding first air hole (207). The damping device further comprises a first cylindrical plug (210) slidingly fitted in the connecting pipe (208). The outer side of the connecting pipe (208) is provided with a plurality of exhaust holes (209) at equal intervals along the radial direction. The first cylindrical plug (210) can block the exhaust holes (209). The bottom of the first cylindrical plug (210) is fixed with a tapered plug (218). The diameter of the tapered plug (218) gradually decreases from top to bottom in the vertical cross section. The diameter of the tapered plug (218) at the middle part is equal to the diameter of the first air hole (207). The tapered plug (218) can block the first air hole (207). The bottom of the tapered plug (218) is fixed with a cylinder (212). The first cylindrical plug (210) and the tapered plug (218) are provided with an air inlet hole (211) therein. The air inlet hole (211) is in communication with the cylinder (212). The diameter of the air inlet hole (211) is equal to the diameter of the exhaust hole (209). The cylinder (212) is slidingly connected with a second cylindrical plug (213). The diameter of the second cylindrical plug (213) is greater than the diameter of the air inlet hole (211).

5. A damping structure for a reduction gear according to claim 4, characterized in that A plurality of second air holes (215) are equidistantly arranged on the outer side of the cylinder (212) along the radial direction, the second air holes (215) are located below the second cylindrical plug (213), a second spring (214) is arranged in the cylinder (212), one end of the second spring (214) is fixed to the inner wall of the bottom of the cylinder (212), and the other end of the second spring (214) is attached to the second cylindrical plug (213), and a third air hole (217) is arranged in the bottom of the cylinder (212).

6. A damping structure for a reduction gear according to claim 3, wherein An annular baffle (216) is fixed to the inner wall of the top of the connecting pipe (208), and the outer diameter of the first cylindrical plug (210) is greater than the inner diameter of the annular baffle (216).

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