Shock-absorbing and noise-reducing bearing seat

Abstract

The utility model relates to the technical field of mechanical parts, and discloses a shock absorption and noise reduction bearing seat which comprises an upper bearing bush and a lower bearing bush, the bottom end of the upper bearing bush is fixedly connected with the top end of the lower bearing bush through a bolt, a base plate is welded to the bottom end of the lower bearing bush, and two guide columns are fixedly arranged on the two sides of the bottom end of the base plate respectively. Stress strips are fixedly arranged at the bottom ends of the guide columns, the guide columns are connected with a base in a sliding mode, and a multi-layer composite rubber pad for supporting the base plate is installed at the top end of the base; rigid connection between the base plate and the base is avoided through the guide columns, direct transmission of vibration is prevented, the base plate can be supported by installing the multiple layers of composite rubber pads between the base plate and the base, and the damping characteristics of the multiple layers of composite rubber pads are different. Vibration energy can be effectively absorbed in different frequency ranges, and buffering and damping are provided for the base plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical parts technical field, concretely is a bearing seat of shock absorption and noise reduction. BACKGROUND

[0002] Bearing seat is usually made of cast iron, forged steel, aluminum alloy and other materials, its main function is to provide a stable installation position for bearings, ensure the smooth operation of mechanical equipment, the design and manufacture of bearing seat need to consider many factors, including bearing type, size, load capacity and installation mode etc.

[0003] The application number "202121092168.1" disclosed "a bearing seat structure of shock absorption and noise reduction", "it includes base, the top of base is equipped with a plurality of first spring, the top of first spring is fixedly installed with stabilizing plate, the periphery of stabilizing plate is all fixedly installed with stabilizing frame, the periphery of base is all fixedly installed with mounting seat.The utility model sets up base, first spring, stabilizing plate, support frame, bearing body, reinforcing layer, main body layer, anticorrosion layer, mounting seat, liquid storage tank, electromagnetic valve, hopper, ball, connecting frame, stabilizing frame and second spring, solve the traditional bearing seat shock absorption and noise reduction effect is not good, the anti shock capacity is not good, is easy to damage, after using a period of time, lubricating oil loss will lead to the bearing interior friction is big, cause bigger noise, and the strength of bearing is not high, long -term use will appear abrasion, to lead to bearing gap is big, so as to produce bigger noise when working problem".

[0004] But the above-mentioned mode still has following defect: through first spring and second spring can play the role of buffering and shock absorption, but the elasticity of spring will reduce the rigidity of overall structure, under high frequency vibration or impact load, will cause the resonance of bearing seat, reduced the stability of bearing seat, it is difficult to balance shock absorption effect and stability. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a bearing seat of shock absorption and noise reduction, has the advantages of guaranteeing noise reduction, and can balance shock absorption effect and stability, solves the problems raised in the above background art.

[0006] The utility model provides a kind of shock-absorbing and noise-reducing bearing seat, including upper bearing bush and lower bearing bush, the bottom end of the upper bearing bush is fixedly connected with the top end of lower bearing bush by bolt, the bottom end of the lower bearing bush is welded with backing plate, two guide columns are fixedly arranged on the both sides of the bottom end of the backing plate, the bottom end of the guide column is fixedly provided with stress strip, the guide column is slidably connected with base, the top end of the base is equipped with the multilayer composite rubber pad for supporting backing plate, the inside of the base is rotatably provided with screw rod, the inside of the base is equipped with the driving assembly for driving screw rod, the screw rod is threadedly connected with the pressing plate for pressing stress strip, the inside of the base is equipped with the guide assembly for guiding pressing plate.

[0007] As a preferred technical scheme of the utility model, the multilayer composite rubber pad comprises an outer rubber sheet, an intermediate rubber sheet and a bottom rubber sheet, the intermediate rubber sheet is bonded to the bottom end of the outer rubber sheet by an adhesive, the bottom rubber sheet is bonded to the bottom end of the intermediate rubber sheet by an adhesive, and the hardness of the outer rubber sheet, the intermediate rubber sheet and the bottom rubber sheet decreases from top to bottom.

[0008] As a preferred technical scheme of the utility model, two column grooves are formed on the both sides of the top end of the base, the guide column is slidably connected with the inside of the column groove, and the bottom end of the backing plate and the top end of the base are both fixedly provided with protrusions for limiting the multilayer composite rubber pad.

[0009] As a preferred technical scheme of the utility model, a clamping block is fixedly arranged on the both sides of the bottom end of the upper bearing bush, and a clamping groove is formed on the both sides of the top end of the lower bearing bush, and the clamping block is connected with the inside of the clamping groove.

[0010] As a preferred technical scheme of the utility model, the driving assembly comprises a worm gear, two vertical plates are rotatably connected to the both ends of the worm gear, the bottom end of the vertical plate is fixedly connected with the inner wall of the bottom end of the base, a connecting shaft is fixedly arranged at one end of the worm gear, a shaft head is fixedly arranged at one end of the connecting shaft, a hexagonal groove is formed on one side of the shaft head, and a worm wheel is fixedly arranged at the bottom of the screw rod and engaged with the worm gear.

[0011] As a preferred technical scheme of the utility model, the guide assembly comprises a guide strip one and a guide strip two, a connecting rod is fixedly arranged on the top end and the bottom of the guide strip one, one end of the connecting rod is fixedly connected with the guide strip two, two sliding grooves are formed on one side of the pressing plate, the pressing plate is slidably connected with the guide strip one and the guide strip two through the sliding grooves, and a threaded hole is formed in the middle of the pressing plate and threadedly connected with the screw rod.

[0012] As a preferred technical scheme of the utility model, the top end of the guide strip one and the top end of the guide strip two are fixedly connected with the inner wall of the top end of the base through positioning screws, and the bottom end of the guide strip one and the bottom end of the guide strip two are fixedly connected with the inner wall of the bottom end of the base through screws.

[0013] As a preferred technical scheme of the utility model, the two sides of the base are clamped and connected with protective covers, and the two sides of the bottom end of the base are fixedly provided with mounting plates, and the two sides of the mounting plates are provided with mounting holes.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The rigid connection between the pad and the base is avoided by the guide column, direct transmission of vibration is prevented, the pad is supported by installing the multilayer composite rubber pad between the pad and the base, different damping characteristics of each layer of the multilayer composite rubber pad can ensure effective absorption of vibration energy in different frequency ranges and provide cushioning and shock absorption for the pad, and the shock absorption and noise reduction capacity of the bearing seat is effectively improved.

[0016] 2. The guide column can transmit the pressure to the multilayer composite rubber pad by driving the guide column through the driving assembly, the multilayer composite rubber pad can be pre-tightened, the compression amount of the multilayer composite rubber pad can be controlled, the support stability can be maintained, the shock absorption effect and stability of the bearing seat can be balanced, and the multilayer composite rubber pad can run in the best working state. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model;

[0018] Fig. 2 It is an explosion structural schematic view of the utility model;

[0019] Fig. 3 It is a structural schematic view of the base of the utility model;

[0020] Fig. 4 It is a structural schematic view of the inside of the base of the utility model;

[0021] Fig. 5 It is a structural schematic view of the driving assembly of the utility model;

[0022] Fig. 6 It is a structural schematic view of the guide assembly of the utility model.

[0023] In the figure: 1, upper bearing bush; 2, lower bearing bush; 3, clamping block; 4, clamping groove; 5, backing plate; 6, guide column; 7, multi-layer composite rubber pad; 701, outer rubber sheet; 702, middle layer rubber sheet; 703, bottom layer rubber sheet; 8, convex strip; 9, stress strip; 10, base; 11, lead screw; 12, worm gear; 13, driving assembly; 1301, worm; 1302, vertical plate; 1303, connecting shaft; 1304, shaft head; 1305, hexagonal groove; 14, pressing plate; 15, guide assembly; 1501, guide bar one; 1502, guide bar two; 1503, positioning screw; 1504, connecting rod; 16, column groove; 17, mounting plate; 18, mounting hole; 19, protective cover; 20, threaded hole; 21, sliding groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figs. 1-6 The bearing seat capable of damping and reducing noise comprises an upper bearing bush 1 and a lower bearing bush 2, the bottom end of the upper bearing bush 1 is fixedly connected with the top end of the lower bearing bush 2 through bolts, the bottom end of the lower bearing bush 2 is welded with a backing plate 5, two guide columns 6 are fixedly arranged on the two sides of the bottom end of the backing plate 5, a stress strip 9 is fixedly arranged at the bottom end of the guide column 6, a base 10 is slidingly connected with the guide column 6, a multi-layer composite rubber pad 7 for supporting the backing plate 5 is mounted at the top end of the base 10, the multi-layer composite rubber pad 7 is mounted between the backing plate 5 and the base 10, so that the backing plate 5 can be supported, the multi-layer composite rubber pad 7 can absorb kinetic energy and provide buffering and damping for the backing plate 5, because the damping characteristics of each layer of the multi-layer composite rubber pad 7 are different, vibration energy can be effectively absorbed in different frequency ranges, a lead screw 11 is rotatably arranged in the base 10, a driving assembly 13 for driving the lead screw 11 is arranged in the base 10, a pressing plate 14 for pressing the stress strip 9 is threadedly connected with the lead screw 11, and a guide assembly 15 for guiding the pressing plate 14 is arranged in the base 10.

[0026] In the embodiment, preferably, the multilayer composite rubber pad 7 comprises an outer rubber sheet 701, an intermediate rubber sheet 702 and a bottom rubber sheet 703, the bottom end of the outer rubber sheet 701 is bonded with the intermediate rubber sheet 702 through an adhesive, the bottom end of the intermediate rubber sheet 702 is bonded with the bottom rubber sheet 703 through an adhesive, the hardness of the outer rubber sheet 701, the intermediate rubber sheet 702 and the bottom rubber sheet 703 decreases from top to bottom, the low-frequency vibration can be absorbed and isolated through the outer rubber sheet 701, the intermediate rubber sheet 702 can further absorb and attenuate the medium-frequency vibration energy, and the bottom rubber sheet 703 can absorb and isolate the high-frequency vibration, so that the damping effect of the bearing seat can be improved;

[0027] In the embodiment, preferably, the driving assembly 13 comprises a worm 1301, both ends of the worm 1301 are rotationally connected with a vertical plate 1302, the bottom end of the vertical plate 1302 is fixedly connected with the inner wall of the bottom end of the base 10, one end of the worm 1301 is fixedly provided with a connecting shaft 1303, one end of the connecting shaft 1303 is fixedly provided with a shaft head 1304, one side of the shaft head 1304 is provided with a hexagonal groove 1305, the bottom of the lead screw 11 is fixedly provided with a worm wheel 12 which is meshingly connected with the worm 1301, the worm 1301 can be rotated through the hexagonal groove 1305, the worm 1301 can drive the lead screw 11 to rotate through the worm wheel 12, and the self-locking of the lead screw 11 can be realized, and the height of the pressing plate 14 can be adjusted during the rotation of the lead screw 11;

[0028] In the embodiment, preferably, the guiding assembly 15 comprises a guiding strip one 1501 and a guiding strip two 1502, the top end and the bottom of the guiding strip one 1501 are fixedly provided with a connecting rod 1504, one end of the connecting rod 1504 is fixedly connected with the guiding strip two 1502, one side of the pressing plate 14 is provided with two sliding grooves 21, the pressing plate 14 is slidingly connected with the guiding strip one 1501 and the guiding strip two 1502 through the sliding grooves 21, the middle part of the pressing plate 14 is provided with a threaded hole 20 which is threadedly connected with the lead screw 11, the top end of the guiding strip one 1501 and the top end of the guiding strip two 1502 are fixedly connected with the inner wall of the top end of the base 10 through a positioning screw 1503, the bottom end of the guiding strip one 1501 and the bottom end of the guiding strip two 1502 are fixedly connected with the inner wall of the bottom end of the base 10 through a screw, the guiding strip one 1501 and the guiding strip two 1502 can be reinforced between them through the connecting rod 1504, the guiding strip one 1501 and the guiding strip two 1502 can guide the pressing plate 14 through the sliding grooves 21, the linear motion of the pressing plate 14 can be ensured, and the inside of the base 10 can be reinforced, so that the anti-deformation ability of the base 10 is improved;

[0029] In this embodiment, preferably, two column grooves 16 are formed on both sides of the top end of the base 10, the guide column 6 is slidably connected with the inside of the column groove 16, the bottom end of the gusset plate 5 and the top end of the base 10 are both fixedly provided with protrusions 8 for limiting the multilayer composite rubber pad 7, the two sides of the base 10 are both clamped and connected with protective covers 19, the two sides of the mounting plate 17 fixedly provided at the bottom end of the base 10 are both provided with mounting holes 18, the guide column 6 can be guided through the column groove 16, which can prevent the guide column 6 from tilting, the multilayer composite rubber pad 7 can be prevented from horizontal displacement through the protrusions 8, the protective covers 19 can reduce the entry of dust, and the base 10 can be fixedly installed through the mounting holes 18 of the mounting plate 17;

[0030] In this embodiment, preferably, the two sides of the bottom end of the upper bearing bush 1 are fixedly provided with clamping blocks 3, the two sides of the top end of the lower bearing bush 2 are both provided with clamping grooves 4, and the clamping blocks 3 are clamped and connected with the inside of the clamping grooves 4. By clamping and connecting the clamping blocks 3 and the clamping grooves 4, the firmness and stability between the upper bearing bush 1 and the lower bearing bush 2 are improved.

[0031] In use, first, the base 10 is fixedly installed through the mounting holes 18 of the mounting plate 17, then the shaft rod is placed between the upper bearing bush 1 and the lower bearing bush 2, the clamping blocks 3 at the bottom end of the upper bearing bush 1 are clamped with the clamping grooves 4 at the top end of the lower bearing bush 2, and finally the upper bearing bush 1 and the lower bearing bush 2 are fixed through bolts, so that the shaft rod can be supported and limited.

[0032] After the shaft rod is installed, the hexagonal groove 1305 of the driving assembly 13 is rotated to rotate the worm 1301, the worm 1301 can drive the screw rod 11 to rotate through the worm gear 12, the screw rod 11 can convert the rotary motion into the linear motion of the pressing plate 14 through the threaded hole 20, so that the height of the pressing plate 14 can be adjusted, the pressing plate 14 is controlled to descend to press the stress strip 9, the stress strip 9 can transmit the pressure to the multilayer composite rubber pad 7 through the guide column 6, so that the pre-tightening force of the multilayer composite rubber pad 7 can be adjusted, thereby the compression amount of the multilayer composite rubber pad 7 can be controlled, the support stability can be maintained, the shock absorption effect and stability of the bearing seat can be balanced, and the multilayer composite rubber pad 7 can be ensured to operate in the best working state;

[0033] In the process of adjusting the pressing plate 14, the guide strips one 1501 and two 1502 of the guide assembly 15 can guide the pressing plate 14 through the sliding groove 21, so as to ensure the linear motion of the pressing plate 14 and reinforce the inside of the base 10, and after the pressing plate 14 is adjusted, the screw rod 11 can be self-locked through the angular friction between the worm 1301 and the worm gear 12;

[0034] Since the hardness of the outer rubber sheet 701, the middle rubber sheet 702 and the bottom rubber sheet 703 decreases from top to bottom in turn, the damping characteristics of each layer are different, when subjected to vibration, the outer rubber sheet 701 can absorb and isolate low-frequency vibration, the middle rubber sheet 702 can further absorb and attenuate medium-frequency vibration energy, and the bottom rubber sheet 703 can absorb and isolate high-frequency vibration, thereby improving the damping effect of the bearing seat, and the convex strip 8 can prevent the multilayer composite rubber pad 7 from displacement.

[0035] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A shock-absorbing and noise-reducing bearing seat comprising an upper bearing shell (1) and a lower bearing shell (2), characterized in that: The bottom end of the upper bearing bush (1) is fixedly connected with the top end of the lower bearing bush (2), the bottom end of the lower bearing bush (2) is welded with a backing plate (5), both sides of the bottom end of the backing plate (5) are fixedly provided with two guide columns (6), the bottom end of the guide column (6) is fixedly provided with a stress strip (9), the guide column (6) is slidingly connected with a base (10), the top end of the base (10) is mounted with a multilayer composite rubber pad (7), the inside of the base (10) is rotatably provided with a lead screw (11), the inside of the base (10) is provided with a driving assembly (13) for driving the lead screw (11), the lead screw (11) is threadedly connected with a pressing plate (14), and the inside of the base (10) is provided with a guide assembly (15).

2. The shock-absorbing and noise-reducing pillow block bearing of claim 1, wherein: The multilayer composite rubber pad (7) comprises an outer rubber sheet (701), an intermediate rubber sheet (702) and a bottom rubber sheet (703), the bottom end of the outer rubber sheet (701) is adhesively connected with the intermediate rubber sheet (702), the bottom end of the intermediate rubber sheet (702) is adhesively connected with the bottom rubber sheet (703), and the hardness of the outer rubber sheet (701), the intermediate rubber sheet (702) and the bottom rubber sheet (703) decreases from top to bottom.

3. The shock-absorbing and noise-reducing pillow block bearing of claim 1, wherein: Both sides of the top end of the base (10) are provided with two column grooves (16), the guide column (6) is slidingly connected with the inside of the column groove (16), and the bottom end of the backing plate (5) and the top end of the base (10) are fixedly provided with convex strips (8) for limiting the multilayer composite rubber pad (7).

4. The shock-absorbing and noise-reducing pillow block bearing of claim 1, wherein: Both sides of the bottom end of the upper bearing bush (1) are fixedly provided with clamping blocks (3), both sides of the top end of the lower bearing bush (2) are provided with clamping grooves (4), and the clamping blocks (3) are clampedly connected with the inside of the clamping grooves (4).

5. The shock-absorbing and noise-reducing pillow block bearing of claim 1, wherein: The driving assembly (13) comprises a worm (1301), both ends of the worm (1301) are rotatably connected with vertical plates (1302), the bottom end of the vertical plate (1302) is fixedly connected with the inner wall of the bottom end of the base (10), one end of the worm (1301) is fixedly provided with a connecting shaft (1303), one end of the connecting shaft (1303) is fixedly provided with a shaft head (1304), one side of the shaft head (1304) is provided with a hexagonal groove (1305), and the bottom of the lead screw (11) is fixedly provided with a worm wheel (12) meshingly connected with the worm (1301).

6. The shock and noise reducing pillow block bearing of claim 1, wherein: The guide assembly (15) comprises a guide strip one (1501) and a guide strip two (1502), the top end and the bottom of the guide strip one (1501) are fixedly provided with connecting rods (1504), one end of the connecting rod (1504) is fixedly connected with the guide strip two (1502), one side of the pressing plate (14) is provided with two sliding grooves (21), the pressing plate (14) is slidingly connected with the guide strip one (1501) and the guide strip two (1502) through the sliding grooves (21), and the middle part of the pressing plate (14) is provided with a threaded hole (20) threadedly connected with the lead screw (11).

7. The shock-absorbing and noise-reducing bearing seat according to claim 6, characterized in that: The top end of the guide strip one (1501) and the top end of the guide strip two (1502) are fixedly connected with the inner wall of the top end of the base (10) through positioning screws (1503), and the bottom end of the guide strip one (1501) and the bottom end of the guide strip two (1502) are fixedly connected with the inner wall of the bottom end of the base (10) through screws.

8. The shock and noise reducing pillow block bearing of claim 1, wherein: The base (10) is clamped and connected with protective covers (19) on the two sides, the bottom end of the base (10) is fixedly provided with mounting plates (17) on the two sides, and mounting holes (18) are formed in the two sides of the mounting plates (17).

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