Magnetorheological liquid damping assembly and vibratory hammer

Abstract

The utility model discloses a magnetorheological fluid damping component and vibratory hammer, the magnetorheological fluid damping component comprises a damping piece, sealing pieces, magnetorheological fluid and an electromagnetic component, the damping piece is provided with a containing hole, the sealing pieces are arranged at the two ends of the containing hole so as to cooperate with the containing hole to form a sealed space, the electromagnetic component is arranged in the containing hole, and the magnetorheological fluid is arranged in the containing hole. The containing hole is configured to contain the magnetorheological fluid and the electromagnetic assembly, and the electromagnetic assembly is configured to change the magnetic field of the electromagnetic assembly through current so as to adjust the viscosity of the magnetorheological fluid and further adjust the damping force of the magnetorheological fluid damping assembly. According to the magnetorheological fluid damping assembly, the viscosity of the magnetorheological fluid is adjusted by changing the magnetic field, then damping force adjustment of the magnetorheological fluid damping assembly is achieved, and the magnetorheological fluid damping assembly has the advantage of automatically adjusting the damping force of the damping assembly.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of excavators, and in particular to a magnetorheological liquid damping component and a vibrating hammer. Background Art

[0002] Magnetorheological fluid (MR fluid for short) is a new type of fluid with controllable fluidity and is a relatively active research area in smart materials. It exhibits low-viscosity Newtonian fluid characteristics when there is no external magnetic field. When an external magnetic field is applied, it exhibits high-viscosity, low-fluidity Bingham fluid. There is a corresponding relationship between the viscosity of the liquid and the magnetic flux. This conversion has low energy consumption, is easy to control, and has a fast response (millisecond level).

[0003] Based on the unique properties of magnetorheological materials and a large number of related basic research, magnetorheological technology is increasingly being used to solve practical engineering problems. Its relatively extensive and mature applications are mainly concentrated in the fields of clutches, dampers, and military. According to the actual application, the main working modes of magnetorheological materials in applications can be roughly divided into three types, namely valve mode, shear mode, and extrusion mode.

[0004] The damping force of existing shock-absorbing blocks is mostly fixed. When dealing with different working environments, they need to be replaced, otherwise the service life of the vibration hammer will be reduced. There is a problem that the damping force cannot be changed accordingly according to changes in the working environment. Utility Model Content

[0005] In order to solve the related technical problems, the utility model provides a magnetorheological liquid shock absorbing component and a vibration hammer to solve the problem that the damping force of the shock absorbing component can be adjusted.

[0006] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0007] A magnetorheological fluid damping component comprises a damping element, a sealing element, a magnetorheological fluid and an electromagnetic component, wherein:

[0008] The shock absorbing member is provided with a receiving hole, the sealing member is arranged at both ends of the receiving hole to cooperate with the receiving hole to form a sealed space, and the receiving hole is configured to receive the magnetorheological fluid and the electromagnetic component.

[0009] The electromagnetic assembly is configured to change its magnetic field through electric current to adjust the viscosity of the magnetorheological fluid, thereby adjusting the damping force of the magnetorheological fluid shock absorbing assembly.

[0010] The electromagnetic assembly includes an elastic member, on which an electromagnetic coil is sleeved, and the elastic member is configured to drive adjacent electromagnetic coils to approach or move away from each other through deformation generated thereby, thereby changing magnetic flux to adjust the viscosity of the magnetorheological fluid.

[0011] The elastic member is vertically arranged in the accommodating hole and is coaxially arranged with the accommodating hole.

[0012] The elastic member is a spring, and the electromagnetic coil is wound around the spring along a rotation path of the spring.

[0013] The shock absorbing member is cylindrical, the diameter of the shock absorbing member gradually decreases from both ends to the middle position, and the diameters of the two ends of the shock absorbing member are consistent.

[0014] The diameter of the sealing member is consistent with the diameters of two ends of the shock absorbing member.

[0015] A vibrating hammer comprises the magnetorheological liquid shock absorbing component.

[0016] The vibration hammer comprises a hammer body, and a first accommodating space and a second accommodating space are arranged on the hammer body, and the first accommodating space and the second accommodating space are symmetrically arranged.

[0017] The first accommodating space and the second accommodating space are configured to install a plurality of the magnetorheological liquid damping assemblies.

[0018] The magnetorheological liquid damping assembly is arranged and installed in the first accommodating space and the second accommodating space through fasteners.

[0019] The beneficial effects of the utility model are as follows: compared with the prior art, the magnetorheological liquid damping component and the vibration hammer provided by the utility model have the following beneficial effects:

[0020] 1. By changing the magnetic field to adjust the viscosity of the magnetorheological fluid, the damping force of the magnetorheological fluid shock absorbing component is adjusted, which has the effect of autonomously adjusting the damping force of the shock absorbing component;

[0021] 2. The configuration of driving the adjacent electromagnetic coils to move closer or farther apart through the deformation of the elastic member to change the magnetic flux and further change the viscosity of the magnetorheological fluid has a simple structure, is easy to use, and is easy to maintain later;

[0022] 3. By winding the electromagnetic coil around the spring along the rotation path of the spring, the current effect is further increased, the stability and timeliness of the magnetic field change are increased, and the working efficiency of the magnetorheological fluid shock absorbing assembly is improved;

[0023] 4. By arranging the magnetorheological liquid damping components in the first space and the second space through fasteners, installation is convenient and maintenance is easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present invention, the following briefly introduces the background technology of the present invention and the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the vibration hammer provided by the embodiment of the utility model;

[0026] Figure 2 It is a side view schematic diagram of a vibrating hammer provided by an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the internal structure of the vibration hammer provided by the embodiment of the utility model;

[0028] Figure 4 It is a structural schematic diagram of a magnetorheological liquid shock absorbing assembly provided by an embodiment of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the electromagnetic component provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thoroughly understood. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on another component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to another component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the utility model. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] See also Figures 1 to 5 As shown, this embodiment provides a magnetorheological liquid shock absorbing assembly including a shock absorbing member 1, a sealing member 2, a magnetorheological liquid 3 and an electromagnetic assembly 4. A receiving hole 11 is provided on the shock absorbing member 1. The sealing member 2 is arranged at both ends of the receiving hole 11 to cooperate with the receiving hole 11 to form a sealed space. The receiving hole 11 is configured to accommodate the magnetorheological liquid 3 and the electromagnetic assembly 4. The electromagnetic assembly 4 is configured to change its magnetic field through electric current to adjust the viscosity of the magnetorheological liquid 3, thereby adjusting the damping force of the magnetorheological liquid shock absorbing assembly.

[0033] The working modes of the magnetorheological fluid 3 are divided into three types, namely valve mode, shear mode and extrusion mode. The magnetorheological fluid damping component of this embodiment adopts the shear mode due to the requirements of its use scenario.

[0034] The shear mode means that during the working process, the two pole plates are in constant motion, and the space between the two relatively moving pole plates is filled with magnetorheological fluid 3. Under the action of an external vertical magnetic field, the flow characteristics of the magnetorheological fluid 3 change, thereby changing the resistance of the piston that pushes the pole plates to move, thereby achieving the purpose of controlling the damping force with an external magnetic field.

[0035] The relative movement of the two pole plates and the function of applying a vertical magnetic field are realized by the electromagnetic component 4 .

[0036] Specifically, the magnetorheological fluid 3 and the electromagnetic component 4 are sealed in the accommodating hole 11, and the magnetic field of the electromagnetic component 4 is changed to adjust the viscosity of the magnetorheological fluid 3, thereby adjusting the damping force of the magnetorheological fluid shock absorbing component, thereby achieving the purpose of adjusting the damping force of the magnetorheological fluid shock absorbing component, avoiding the problem of replacing the shock absorbing component in different working environments, saving time and labor, and improving the working efficiency of the equipment.

[0037] As an embodiment, the electromagnetic assembly 4 includes an elastic member 41 on which an electromagnetic coil 42 is sleeved. The elastic member 41 is configured to drive adjacent electromagnetic coils 42 to move closer / away through deformation generated thereby, thereby changing the magnetic flux to adjust the viscosity of the magnetorheological fluid 3 .

[0038] It can be seen that the electromagnetic component 4 has a simple structure. The electromagnetic coil 42 is wound on the elastic member 41 to achieve the function of the above-mentioned external vertical magnetic field. The elastic member 41 is squeezed and deformed, driving the electromagnetic coil 42 to move closer or farther away, so as to achieve the effect of relative movement of the above-mentioned two pole plates, so as to change the magnetic flux, thereby autonomously adjusting the viscosity of the magnetorheological fluid 3, and has the advantages of simple structure and easy maintenance.

[0039] As an implementation manner, the elastic member 41 is vertically disposed in the accommodating hole 11 and is coaxially disposed with the accommodating hole 11 .

[0040] Specifically, the receiving hole 11 is arranged in the middle position of the shock absorbing member 1 and is coaxially arranged with the shock absorbing member 1 , and the elastic member 41 and the receiving hole 11 are coaxially arranged. This arrangement can make the deformation of the elastic member 41 more stable and accurate.

[0041] As an implementation manner, the elastic member 41 is a spring, and the electromagnetic coil 42 is wound around the spring along the rotation path of the spring.

[0042] It can be seen that by winding the electromagnetic coil 42 on the spring, the stability and accuracy of the magnetic field control are increased, the stability and timeliness of the magnetic field change are increased, and the working efficiency of the magnetorheological fluid damping assembly is improved.

[0043] As an implementation manner, the shock absorbing member 1 is cylindrical, and the diameter of the shock absorbing member 1 gradually decreases from both ends to the middle position, and the diameters of the two ends of the shock absorbing member 1 are consistent.

[0044] It can be seen that this arrangement can achieve a shock-absorbing effect and extend the service life of the shock-absorbing component 1.

[0045] As an implementation manner, the diameter of the sealing member 2 is consistent with the diameters of the two ends of the shock absorbing member 1 .

[0046] It can be seen that the increased integrity of the sealing member 2 and the shock absorbing member 1 makes the magnetorheological liquid shock absorbing assembly more integrated and less prone to damage.

[0047] A vibrating hammer comprises the above-mentioned magnetorheological liquid shock absorbing component.

[0048] As an implementation manner, the vibration hammer includes a hammer body, and a first accommodating space 5 and a second accommodating space 6 are arranged on the hammer body, and the first accommodating space 5 and the second accommodating space 6 are symmetrically arranged.

[0049] It can be seen that the symmetrical arrangement of the first accommodating space 5 and the second accommodating space 6 makes the use of the hammer more stable.

[0050] As an implementation manner, the interiors of the first accommodating space 5 and the second accommodating space 6 are configured to install a plurality of magnetorheological liquid damping components.

[0051] Specifically, the magnetorheological liquid shock absorbing components can be increased or decreased according to demand, and have a wide range of adaptability.

[0052] As an implementation mode, the magnetorheological liquid damping assembly is installed in the first accommodating space 5 and the second accommodating space 6 by means of fasteners.

[0053] It can be seen that the structure is simple and easy to install, which improves the installation efficiency of the equipment.

[0054] The specific working principle of the magnetorheological liquid damping assembly and the vibrating hammer is as follows:

[0055] The magnetic field generated by energizing the electromagnetic coil 42 causes the magnetorheological fluid 3 to solidify and become a viscoplastic body, thereby increasing the damping force of relative motion. The intensity of the magnetic field is adjusted by adjusting the current of the electromagnetic coil 42 and / or the deformation of the spring, thereby adjusting the damping force of the shock absorber.

[0056] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0057] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A magnetorheological fluid damping component, characterized in that: The magnetorheological fluid damping assembly comprises a damping member, a sealing member, a magnetorheological fluid and an electromagnetic assembly, wherein: The shock absorbing member is provided with a receiving hole, the sealing member is arranged at both ends of the receiving hole to cooperate with the receiving hole to form a sealed space, and the receiving hole is configured to receive the magnetorheological fluid and the electromagnetic component. The electromagnetic assembly is configured to change its magnetic field through electric current to adjust the viscosity of the magnetorheological fluid, thereby adjusting the damping force of the magnetorheological fluid shock absorbing assembly.

2. A magnetorheological fluid damping assembly according to claim 1, characterized in that: The electromagnetic assembly includes an elastic member, on which an electromagnetic coil is sleeved, and the elastic member is configured to drive adjacent electromagnetic coils to approach or move away from each other through deformation generated thereby, thereby changing magnetic flux to adjust the viscosity of the magnetorheological fluid.

3. A magnetorheological fluid damping assembly according to claim 2, characterized in that: The elastic member is vertically arranged in the accommodating hole and is coaxially arranged with the accommodating hole.

4. A magnetorheological fluid damping assembly according to claim 2, characterized in that: The elastic member is a spring, and the electromagnetic coil is wound around the spring along a rotation path of the spring.

5. The magnetorheological fluid damping assembly according to claim 1, characterized in that: The shock absorbing member is cylindrical, the diameter of the shock absorbing member gradually decreases from both ends to the middle position, and the diameters of the two ends of the shock absorbing member are consistent.

6. A magnetorheological fluid damping assembly according to claim 1, characterized in that: The diameter of the sealing member is consistent with the diameters of two ends of the shock absorbing member.

7. A vibrating hammer, characterized in that: The vibration hammer comprises a magnetorheological fluid shock absorbing component as described in any one of claims 1-6.

8. A vibratory hammer according to claim 7, characterized in that: The vibration hammer comprises a hammer body, and a first accommodating space and a second accommodating space are arranged on the hammer body, and the first accommodating space and the second accommodating space are symmetrically arranged.

9. A vibratory hammer according to claim 8, characterized in that: The first accommodating space and the second accommodating space are configured to install a plurality of the magnetorheological liquid damping assemblies.

10. A vibratory hammer according to claim 9, characterized in that: The magnetorheological liquid damping assembly is arranged and installed in the first accommodating space and the second accommodating space through fasteners.

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