A shock absorber for a cab of an excavator

Abstract

The utility model discloses an excavator cab damping device, and the device comprises a cab, the lower end of the cab is equipped with a damping plate, the lower end of the damping plate is equipped with a concave plate, three strip grooves are equipped in the recess of the concave plate, the both ends of the three strip grooves are equipped with first springs, a buffer block is equipped in the middle of the two first springs, and the upper end of the buffer block is connected with the damping plate. The utility model has the advantages that the first spring in the strip groove of the concave plate cooperates with the buffer block, forms a first-stage damping structure, when the cab is vibrated, the first spring can absorb part of vibration energy through compression and rebound, and the buffer block further disperses vibration impact force; the second spring in the damping plate and the magnetorheological damping glue constitute a second-stage damping, the second spring provides elastic buffering, the magnetorheological damping glue can change damping characteristics in real time according to vibration intensity, accurately suppresses vibration of different frequencies and intensities, and the multi-stage damping synergistically acts, which greatly improves the damping effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of excavator components, specifically relating to a shock absorption device for an excavator cab. Background Technology

[0002] During excavator operation, the cab is subjected to strong vibrations due to complex terrain and high-intensity mechanical vibrations. This vibration not only affects the operator's comfort but may also cause long-term damage to the operator's health. It also has an adverse effect on the normal operation and service life of the equipment in the cab.

[0003] Therefore, there is an urgent need to provide a shock absorption device for excavator cabs to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to provide a shock absorption device for excavator cabs to solve the technical problem that the cabs are subjected to strong vibrations during excavator operation due to complex terrain and high-intensity mechanical vibrations.

[0005] To solve the above-mentioned technical problems, this utility model provides a shock absorption device for an excavator cab, comprising: a cab, a shock absorption plate at the lower end of the cab, a concave plate at the lower end of the shock absorption plate, three strip grooves in the concave plate, a first spring at both ends of the three strip grooves, a buffer block between the two first springs, and the upper end of the buffer block being connected to the shock absorption plate.

[0006] As further explained, the damping plate includes an aluminum alloy layer, a damping layer, and a stainless steel layer. The upper end of the damping layer is bonded to the aluminum alloy layer, and the lower end of the damping layer is bonded to the stainless steel layer.

[0007] As further explained, the damping plate is provided with a plurality of second springs, and the plurality of second springs are filled with magnetorheological damping adhesive.

[0008] As further explained, the buffer block has long protrusions on both sides, and the long protrusions are inserted into the cavity of the first spring.

[0009] As further explained, the two sides of the damping plate are attached to the recess of the concave plate, and the lower end of the damping plate is lower than the upper end of the recess of the concave plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The first spring in the concave plate groove works with the buffer block to form a primary shock absorption structure. When the cab is subjected to vibration, the first spring can absorb some of the vibration energy through compression and rebound, while the buffer block further disperses the vibration impact force. The second spring in the shock absorption plate and the magnetorheological damping rubber constitute a secondary shock absorption. The second spring provides elastic cushioning, and the magnetorheological damping rubber can change its damping characteristics in real time according to the vibration intensity, accurately suppressing vibrations of different frequencies and intensities. The multi-stage shock absorption works synergistically to greatly improve the shock absorption effect.

[0011] 2. The damping plate adopts a composite structure of aluminum alloy layer, damping layer and stainless steel layer, which further enhances the damping performance. Specifically, the high specific strength (strength / density ratio) of the aluminum alloy layer can effectively conduct vibration energy to the damping layer; the damping layer is filled with a second spring of magnetorheological damping rubber, which can automatically adjust the damping force according to the vibration, so as to achieve more precise damping control; the high rigidity of the stainless steel layer can provide a stable support plane.

[0012] 3. The long protrusions on both sides of the buffer block are inserted into the cavity of the first spring. This structural design enables the buffer block to remain stable when under force, avoiding displacement or shaking, ensuring that the first spring is subjected to uniform force, and improving the reliability of the entire shock absorption device. At the same time, the design of the shock absorption plate fitting into the concave plate notch on both sides and the lower end being lower than the upper end of the notch can prevent the shock absorption plate from excessive displacement and further enhance the structural stability.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a preferred three-dimensional structural diagram of the present invention; Figure 2 This is a preferred exploded view of the present invention; Figure 3 This is a schematic diagram of the composition of the shock-absorbing plate of this utility model.

[0017] In the picture: 1. Cab, 2. Shock absorber, 201 aluminum alloy layer, 202 shock absorber layer, 203 stainless steel layer, 3. Concave plate, 4. Strip groove, 5. First spring, 6. Buffer block, 7. Long protrusion, 8. Second spring, 9. Magnetorheological damping rubber. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figure 1-3 A vibration damping device for an excavator cab includes: a cab 1, a damping plate 2 at the lower end of the cab 1, a concave plate 3 at the lower end of the damping plate 2, three strip grooves 4 within the concave opening of the concave plate 3, a first spring 5 at both ends of each of the three strip grooves 4, and a buffer block 6 between two of the first springs 5, the upper end of which is connected to the damping plate 2. When the excavator vibrates during operation, the impact force is transmitted through the cab 1 to the damping plate 2. The buffer block 6 compresses the first springs 5 ​​on both sides, and the first springs 5 ​​absorb the vibration energy through compression deformation, converting mechanical energy into elastic potential energy. When the vibration weakens, the first springs 5 ​​rebound and release energy, thus buffering the vibration. The three strip grooves 4 are symmetrically distributed to ensure uniform force distribution and prevent the cab 1 from tilting or experiencing excessive local vibration. This device achieves multi-stage vibration damping through the combination of the damping plate 2, the first springs 5, and the buffer block 6, improving the vibration damping effect.

[0020] like Figure 3 As shown, the damping plate 2 includes an aluminum alloy layer 201, a damping layer 202, and a stainless steel layer 203. The upper end of the damping layer 202 is bonded to the aluminum alloy layer 201, and the lower end of the damping layer 202 is bonded to the stainless steel layer 203. The damping plate 2 adopts a composite structure of aluminum alloy layer 201, damping layer 202, and stainless steel layer 203, which further enhances the damping performance. The high specific strength (strength / density ratio) of the aluminum alloy layer 201 effectively transmits vibration energy to the damping layer 202; the high stiffness of the stainless steel layer 203 provides a stable supporting surface.

[0021] like Figure 3As shown, the damping plate 202 contains several second springs 8, and each second spring 8 is filled with magnetorheological damping adhesive 9. The magnetorheological damping adhesive 9 is a smart material whose damping characteristics can be adjusted according to changes in the external magnetic field. When vibration occurs, the second springs 8 and the magnetorheological damping adhesive 9 work together to absorb and disperse vibration energy, achieving more precise vibration control.

[0022] like Figure 2 As shown, the buffer block 6 has long protrusions 7 on both sides, which are inserted into the cavity of the first spring 5. This structural design enables the buffer block to remain stable under force, avoids displacement or shaking, ensures that the first spring 5 is subjected to uniform force, and improves the reliability of the entire shock absorption device.

[0023] like Figure 1 As shown, the damping plate 2 is fitted into the recesses of the concave plate 3 on both sides, with the lower end of the damping plate 2 lower than the upper end of the recess of the concave plate 3, forming a physical limiting structure. When encountering severe vibration, the concave plate 3 restricts the excessive displacement of the damping plate 2, preventing the damping plate 2 from colliding with other components, while ensuring that the damping plate 2 is always within its effective working range.

[0024] All components selected in this application (parts whose specific structures are not described) are general standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals. This knowledge can be obtained through conventional experimental methods.

[0025] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0026] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A shock absorption device for an excavator cab, characterized in that, include: The cab (1) is provided with a shock absorber plate (2) at the lower end of the cab (1). The shock absorber plate (2) is provided with a concave plate (3) at the lower end of the shock absorber plate (2). The concave plate (3) has three strip grooves (4) in its recess. The three strip grooves (4) are provided with first springs (5) at both ends. The two first springs (5) are provided with a buffer block (6) in the middle. The upper end of the buffer block (6) is connected to the shock absorber plate (2).

2. The excavator cab shock absorption device as described in claim 1, characterized in that, The damping plate (2) includes an aluminum alloy layer (201), a damping layer (202) and a stainless steel layer (203). The upper end of the damping layer (202) is bonded to the aluminum alloy layer (201), and the lower end of the damping layer (202) is bonded to the stainless steel layer (203).

3. The excavator cab shock absorption device as described in claim 2, characterized in that, The damping plate (2) is provided with a number of second springs (8), and the number of second springs (8) is filled with magnetorheological damping glue (9).

4. The excavator cab shock absorption device as described in claim 1, characterized in that, The buffer block (6) has long protrusions (7) on both sides, and the long protrusions (7) are inserted into the cavity of the first spring (5).

5. A shock absorption device for an excavator cab as described in claim 1, characterized in that, The shock-absorbing plate (2) is attached to the recess of the concave plate (3) on both sides, and the lower end of the shock-absorbing plate (2) is lower than the upper end of the recess of the concave plate (3).

Images