Low-temperature-resistant and wind-sand-resistant polyurethane damping device

Abstract

The utility model relates to the technical field of damping devices, in particular to a low-temperature-resistant wind-sand-resistant polyurethane damping device which comprises a bottom plate, a lower connecting plate is fixedly connected to the top of the bottom plate, a polyurethane damping column is fixedly connected to the side, away from the bottom plate, of the lower connecting plate, and an auxiliary damping assembly is fixedly connected to the top of the bottom plate. An air bag assembly is fixedly connected to the top of the bottom plate, buffering and damping are achieved through ventilation and stretching of a rubber air bag arranged on the equipment, meanwhile, heat generated by an auxiliary damping assembly is sucked into the rubber air bag, and when the rubber air bag is extruded and collided, excessive waste heat air in the rubber air bag can be exhausted; the hot air is sprayed out from the air outlet pipe to the polyurethane damping column body, the air flow serves as a heat carrier, heat is transferred to the polyurethane damping column body, the heat can be transferred into the polyurethane damping column body through surface contact, and the phenomenon that the polyurethane damping column body is crystallized and hardened in the low-temperature environment, and the damping performance of the device is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to shock absorber technical field especially relates to a low temperature resistance wind sand polyurethane shock absorber. BACKGROUND

[0002] Polyurethane is a high molecular polymer generated by the reaction of isocyanate and polyol, and its molecular chain contains urethane groups. According to different formulations and processes, polyurethane can present various physical forms, including elastomers, foams, coatings, adhesives, etc. It has high elasticity, wear resistance and aging resistance, and is widely used in shock absorption, sealing, transmission and other fields.

[0003] The working principle of the low-temperature-resistant wind-sand-resistant polyurethane shock absorber is that when subjected to external force, the polyurethane elastomer deforms elastically, absorbs and dissipates energy, reduces vibration and impact transmitted to the upper structure, and the polyurethane material can quickly recover to its original state after unloading, ensuring the stability of the device during long-term use. The protective layer of polyurethane can effectively block wind and sand erosion and prevent material aging or performance degradation.

[0004] The existing low-temperature-resistant wind-sand-resistant polyurethane shock absorber still faces many problems in use. The shock absorber mainly absorbs and dissipates energy by elastic deformation of the polyurethane elastomer to reduce vibration and impact transmitted to the upper structure. However, the polyurethane elastomer tends to crystallize and harden in low-temperature environments, affecting the shock-absorbing performance of the device. UTILITY MODEL CONTENTS

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the utility model provides a low-temperature-resistant wind-sand-resistant polyurethane shock absorber, which solves the technical problems raised in the background art.

[0007] (II) Technical solutions

[0008] To solve the above technical problems, the utility model provides the following technical solutions: a low-temperature-resistant wind-sand-resistant polyurethane shock absorber, comprising a bottom plate, the top of the bottom plate is fixedly connected with a lower connecting plate, the side away from the bottom plate of the lower connecting plate is fixedly connected with a polyurethane shock-absorbing column body, the top of the bottom plate is fixedly connected with an auxiliary shock-absorbing assembly, and the top of the bottom plate is fixedly connected with an air bag assembly.

[0009] The air bag assembly includes a lower pressing plate fixedly installed on the top of the bottom plate, the top of the lower pressing plate is fixedly connected with a rubber air bag, the side, away from the lower pressing plate, of the rubber air bag is fixedly connected with an upper pressing plate, the bottom of the upper pressing plate is fixedly connected with a top ring, the inner wall of the top ring is fixedly connected with a movable pipe, the top of the lower pressing plate is fixedly connected with a bottom ring seat, the bottom ring seat is fixedly connected with a fixed pipe in the inside, the outer wall of the fixed pipe is sleeved with a reset spring one, the outer surface of the rubber air bag is communicated with an air inlet pipe, and the outer surface of the rubber air bag is communicated with an air outlet pipe.

[0010] To solve the above technical problems, the utility model provides the following technical scheme: the auxiliary damping assembly includes installation shell fixedly installed on the top of bottom plate, the top of installation shell is equipped with the circular groove, the inner wall of circular groove is connected with piston rod slidingly.

[0011] To solve the above technical problems, the utility model provides the following technical scheme: the piston rod is fixedly connected with piston block away from the one end of slide groove, the outer wall of piston block is fixedly connected with sealing ring, the outer wall of sealing ring is connected with the inner chamber wall of installation shell slidingly.

[0012] To solve the above technical problems, the utility model provides the following technical scheme: the piston rod is fixedly connected with fixed circular plate away from piston block one end, the outer wall of piston rod is sleeved with limit ring, the outer wall of piston rod is sleeved with reset spring two.

[0013] To solve the above technical problems, the utility model provides the following technical scheme: the outer surface of installation shell is equipped with installation hole, the inner wall of installation hole is fixedly connected with heat pipe, the one end, away from installation hole, of heat pipe is connected with the one end, away from rubber air bag, of air inlet pipe.

[0014] To solve the above technical problems, the utility model provides the following technical scheme: the upper connecting plate is fixedly connected with movable plate away from the one side of polyurethane damping column body, the movable plate is fixedly connected with the one side, away from polyurethane damping column body, of upper connecting plate.

[0015] To solve the above technical problems, the utility model provides the following technical scheme: the movable plate is fixedly connected with support column away from the one side of upper connecting plate, the support column is fixedly connected with fixed top plate away from the one side of movable plate.

[0016] The utility model has the advantages of:

[0017] 1. The device is provided with a rubber air bag, which can buffer and absorb shock through the air exchange expansion of the rubber air bag, and can absorb heat generated by the auxiliary shock absorbing assembly into the rubber air bag, and when the rubber air bag is extruded and collides, the excess hot air in the rubber air bag is discharged, the hot air is sprayed out of the air outlet pipe and sprayed out of the polyurethane shock absorbing column, the hot air is used as a heat carrier, and heat is transferred to the polyurethane shock absorbing column, the heat can be transmitted to the inside of the polyurethane shock absorbing column through surface contact, and the crystallization hardening phenomenon of the polyurethane shock absorbing column in a low-temperature environment is avoided, and the shock absorbing performance of the device is affected.

[0018] 2. When the rubber air bag provided by the device is extruded and collides, the excess hot air in the rubber air bag is discharged, the hot air is sprayed out of the air outlet pipe and sprayed out of the polyurethane shock absorbing column, the sprayed hot air can blow off the dust adhered to the surface of the polyurethane shock absorbing column, and the deposition of dust on the surface of the polyurethane shock absorbing column is avoided to affect the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained on the basis of these drawings without creative labor. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 It is a schematic diagram of the structure of the polyurethane shock absorbing column of the present application.

[0022] Figure 3 It is a schematic diagram of the structure of the auxiliary shock absorbing assembly of the present application.

[0023] Figure 4 It is a schematic diagram of the structure of the air bag assembly of the present application.

[0024] In the figure: 1, bottom plate; 2, auxiliary shock absorbing assembly; 201, mounting shell; 202, sealing ring; 203, piston block; 204, piston rod; 205, reset spring two; 206, limit ring; 207, fixed circular plate; 3, support column; 4, fixed top plate; 5, movable plate; 6, heat transfer pipe; 7, air bag assembly; 701, upper pressing plate; 702, top ring; 703, movable pipe; 704, reset spring one; 705, fixed pipe; 706, bottom ring seat; 707, rubber air bag; 708, air inlet pipe; 709, lower pressing plate; 8, air outlet pipe; 9, polyurethane shock absorbing column; 10, upper connecting plate; 11, lower connecting plate. DETAILED DESCRIPTION

[0025] In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] With reference to Figures 1-4 For the first embodiment of the present application, a low-temperature-resistant and sand-resistant polyurethane damping device is provided, which comprises a bottom plate 1, a lower connecting plate 11 fixedly connected to the top of the bottom plate 1, a polyurethane damping column 9 fixedly connected to the side of the lower connecting plate 11 away from the bottom plate 1, an auxiliary damping assembly 2 fixedly connected to the top of the bottom plate 1, and an air bag assembly 7 fixedly connected to the top of the bottom plate 1, wherein the air bag assembly 7 comprises a lower pressing plate 709 fixedly installed on the top of the bottom plate 1, and a rubber air bag 707 fixedly connected to the top of the lower pressing plate 709.

[0028] The rubber air bag 707 is fixedly connected to the side of the upper pressing plate 701 away from the lower pressing plate 709, the top of the upper pressing plate 701 is fixedly connected to the bottom of the movable plate 5, the bottom of the upper pressing plate 701 is fixedly connected to a top ring 702, the inner wall of the top ring 702 is fixedly connected to a movable tube 703, the top of the lower pressing plate 709 is fixedly connected to a bottom ring seat 706, the inner wall of the bottom ring seat 706 is fixedly connected to a fixed tube 705, the outer wall of the fixed tube 705 is sleeved with a reset spring 704, the outer surface of the rubber air bag 707 is communicated with an air inlet pipe 708, the outer surface of the rubber air bag 707 is communicated with an air outlet pipe 8, the outer surface of the heat transfer pipe 6 and the air inlet pipe 708 is provided with a heat preservation layer to reduce heat loss, and a filter screen is arranged in the air outlet pipe 8 to prevent sand and dust from entering the rubber air bag 707 in the opposite direction.

[0029] Embodiment 2

[0030] With reference to Figures 1-4 For the second embodiment of the present application, the difference between this embodiment and the first embodiment is that the auxiliary damping assembly 2 comprises a mounting shell 201 fixedly installed on the top of the bottom plate 1, a circular groove is formed through the top of the mounting shell 201, a piston rod 204 is slidably connected to the inner wall of the circular groove, a piston block 203 is fixedly connected to the end of the piston rod 204 away from the sliding groove, a sealing ring 202 is fixedly connected to the outer wall of the piston block 203, the outer wall of the sealing ring 202 is slidably connected to the inner cavity wall of the mounting shell 201, a fixed circular plate 207 is fixedly connected to the end of the piston rod 204 away from the piston block 203, and the top of the fixed circular plate 207 is fixedly connected to the bottom of the movable plate 5.

[0031] The outer wall of the piston rod 204 is sleeved with a limiting ring 206, and the outer wall of the piston rod 204 is sleeved with a reset spring two 205, the outer surface of the mounting shell 201 is provided with a mounting hole, the inner wall of the mounting hole is fixedly connected with the heat transfer pipe 6, one end of the heat transfer pipe 6 away from the mounting hole is connected with one end of the air inlet pipe 708 away from the rubber air bag 707, the polyurethane shock column 9 is fixedly connected with the upper connecting plate 10 on the side away from the lower connecting plate 11, the upper connecting plate 10 is fixedly connected with the movable plate 5 on the side away from the polyurethane shock column 9, the movable plate 5 is fixedly connected with the support column 3 on the side away from the upper connecting plate 10, and the support column 3 is fixedly connected with the fixed top plate 4 on the side away from the movable plate 5.

[0032] The rest of the structure is the same as that of example 1.

[0033] In use, after the fixed top plate 4 and the bottom plate 1 are installed at the required position by bolts, the installation of the device is completed, when the fixed top plate 4 is impacted, the support column 3 and the movable plate 5 are pushed to move downward, at this time, the polyurethane shock column 9 is deformed under impact, absorbs and dissipates energy, reduces vibration and impact, at this time, the movable plate 5 pushes the piston rod 204 to slide in the mounting shell 201 through the fixed circular plate 207, thereby pushing the piston block 203 and the sealing ring 202 to slide in the mounting shell 201, and compressing the reset spring two 205 sleeved on the outer wall of the piston rod 204, which plays a role in auxiliary shock absorption and simultaneously transfers the generated heat to the air inlet pipe 708 through the heat transfer pipe 6;

[0034] In use, as the fixed top plate 4 is impacted, the support column 3 and the movable plate 5 are pushed to move downward at the same time, the upper pressing plate 701 is pushed to move the lower pressing plate 709, the rubber air bag 707 is extruded, at the same time, the auxiliary shock absorbing assembly 2 transfers the generated heat to the air inlet pipe 708 through the heat transfer pipe 6, and the heat is sent into the rubber air bag 707, the heat is absorbed into the rubber air bag 707 through the air exchange expansion of the rubber air bag 707, the sliding friction between the movable pipe 703 and the fixed pipe 705 generates additional heat, when the rubber air bag 707 is extruded and collided, the internal excess hot air is discharged, the hot air is sprayed out of the air outlet pipe 8, and the polyurethane shock column 9 is sprayed out, the dust adhered to the outer surface of the polyurethane shock column 9 is blown off, at the same time, the airflow is used as a heat carrier to transfer heat to the polyurethane shock column 9, the heat can be transferred to the inside of the polyurethane shock column 9 through the surface contact, and the phenomenon of crystallization hardening of the polyurethane shock column 9 in a low temperature environment is avoided, which affects the shock absorbing performance of the device.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A low-temperature resistant and wind-blown sand-resistant polyurethane vibration damping device, characterized in that: Includes a base plate (1), a lower connecting plate (11) is fixedly connected to the top of the base plate (1), a polyurethane shock-absorbing column (9) is fixedly connected to the side of the lower connecting plate (11) away from the base plate (1), an auxiliary shock-absorbing component (2) is fixedly connected to the top of the base plate (1), and an airbag component (7) is fixedly connected to the top of the base plate (1). The airbag assembly (7) includes a lower pressure plate (709) fixedly installed on the top of the base plate (1). A rubber airbag (707) is fixedly connected to the top of the lower pressure plate (709). An upper pressure plate (701) is fixedly connected to the side of the rubber airbag (707) away from the lower pressure plate (709). A top ring (702) is fixedly connected to the bottom of the upper pressure plate (701). A movable tube (703) is fixedly connected to the inner wall of the top ring (702). A bottom ring seat (706) is fixedly connected to the top of the lower pressure plate (709). A fixed tube (705) is fixedly connected inside the bottom ring seat (706). A return spring (704) is sleeved on the outer wall of the fixed tube (705). An air inlet pipe (708) is connected to the outer surface of the rubber airbag (707). An air outlet pipe (8) is connected to the outer surface of the rubber airbag (707).

2. The low-temperature resistant and wind-blown sand-resistant polyurethane vibration damping device according to claim 1, characterized in that: The auxiliary shock absorption assembly (2) includes a mounting housing (201) fixedly installed on the top of the base plate (1). A circular groove is provided through the top of the mounting housing (201), and a piston rod (204) is slidably connected to the inner wall of the circular groove.

3. The low-temperature resistant and wind-blown sand-resistant polyurethane vibration damping device according to claim 2, characterized in that: A piston block (203) is fixedly connected to one end of the piston rod (204) away from the slide groove. A sealing ring (202) is fixedly connected to the outer wall of the piston block (203). The outer wall of the sealing ring (202) is slidably connected to the inner wall of the mounting housing (201).

4. The low-temperature resistant and wind-blown sand-resistant polyurethane vibration damping device according to claim 3, characterized in that: A fixed circular plate (207) is fixedly connected to one end of the piston rod (204) away from the piston block (203). A limiting ring (206) is sleeved on the outer wall of the piston rod (204), and a second return spring (205) is sleeved on the outer wall of the piston rod (204).

5. The low-temperature resistant and wind-blown sand-resistant polyurethane vibration damping device according to claim 2, characterized in that: The outer surface of the mounting housing (201) is provided with a mounting hole, and a heat transfer pipe (6) is fixedly connected to the inner wall of the mounting hole. The end of the heat transfer pipe (6) away from the mounting hole is connected to the end of the air inlet pipe (708) away from the rubber airbag (707).

6. The low-temperature resistant and wind-blown sand-resistant polyurethane vibration damping device according to claim 1, characterized in that: The polyurethane damping column (9) is fixedly connected to an upper connecting plate (10) on the side away from the lower connecting plate (11), and the upper connecting plate (10) is fixedly connected to a movable plate (5) on the side away from the polyurethane damping column (9).

7. The low-temperature resistant and wind-blown sand-resistant polyurethane vibration damping device according to claim 6, characterized in that: A support column (3) is fixedly connected to the side of the movable plate (5) away from the upper connecting plate (10), and a fixed top plate (4) is fixedly connected to the side of the support column (3) away from the movable plate (5).

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