An excavator cab with a shock absorbing device

Abstract

The utility model relates to engineering equipment technical field discloses a kind of excavator cab with damping device, including cab, cab bottom is fixedly connected with damping frame, damping frame includes base frame, base frame inboard is fixedly connected with baffle, base frame both sides are fixedly connected with side beam, several shock pads are fixedly connected in base frame, and the shock pad between adjacent two is fixedly connected with damping air bag, several sleeves are fixedly connected in baffle, support spring is connected with intercalation in sleeve. Through the combination of shock pad damping air bag and support spring forms multiple buffering, avoid the damping failure problem caused by single damping component due to elastic attenuation, improve the damping effect of cab, at the same time, auxiliary air bag cooperates with compression spring and the board of resistance, can continuously supplement air pressure for damping air bag, prolong its service life, reduce maintenance frequency, and the protection rubber sleeve that cab is connected with vehicle body can isolate silt and gravel, avoid damping component abrasion.

Description

Technical Field

[0001] This utility model relates to the field of engineering equipment technology, and in particular to an excavator cab with a shock absorption device. Background Technology

[0002] The excavator cab is the core of the excavator's operation and the driver's workspace. It is also a key component to ensure operational safety and efficiency. It is usually a closed metal frame structure with high-strength guardrails on the outside to resist collisions or falling objects. Inside, it is equipped with a complete set of control systems. The driver can control all the excavator's actions such as digging, rotating, and traveling through joysticks, steering wheels, pedals, etc.

[0003] Excavator cabs are typically fixed to designated mounting brackets on the vehicle body using shock-absorbing devices and bolts. For example, the Chinese utility model patent with publication number CN214524102U discloses an excavator cab with a shock-absorbing mechanism. This application includes a cab and a base. Positioning blocks are symmetrically welded to the upper end of the base, and a connecting shaft is welded between the positioning blocks. The cab is rotatably connected to the surface of the connecting shaft. When the cab vibrates, it sways left and right along the connecting shaft, and is then cushioned by a buffer spring. A first crossbeam is symmetrically arranged on the lower end of the cab, and a second crossbeam is symmetrically welded to the surface of the base. A buffer spring is arranged between the first and second crossbeams. However, this shock-absorbing structure relies solely on a single spring or rubber pad for cushioning. After long-term operation, the elasticity is easily attenuated due to continuous stress, leading to a gradual decrease in shock absorption. Furthermore, mud, sand, and gravel generated during operation can easily intrude into the gaps of the shock-absorbing components, accelerating component wear, shortening service life, and requiring frequent disassembly and maintenance, thus affecting construction efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an excavator cab with a shock absorption device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An excavator cab with a shock absorption device includes a cab, a shock absorption frame fixedly connected to the bottom of the cab, the shock absorption frame including a base frame, a partition fixedly connected circumferentially to the inner side of the base frame, side beams fixedly connected to both sides of the base frame, a plurality of shock absorption pads fixedly connected inside the base frame, and a shock absorption airbag fixedly connected between two adjacent shock absorption pads, a plurality of sleeves fixedly connected inside the partition, a support spring inserted through the sleeve, an end sleeve fixedly connected to the upper and lower ends of the support spring, and two end sleeves fixedly connected to the corresponding shock absorption pads respectively, opposite to the end faces of the support spring, and a plurality of abutment plates movably connected to both sides of the base frame, and the abutment plates are also located between two sleeves.

[0007] As a further preferred embodiment of this utility model, a protective rubber sleeve is fixedly connected between the cab and the vehicle body. After the cab is installed on the excavator body via a shock absorber frame, the shock absorber frame can be protected by the enclosed protective rubber sleeve.

[0008] As a further preferred embodiment of this utility model, the outer circumferential side of the shock-absorbing pad is provided with a slot, which is engaged with the inner side to improve the connection strength between the shock-absorbing pad and the base frame. The upper surface of one shock-absorbing pad is in contact with the bottom of the cab, while the lower surface of the other shock-absorbing pad is in contact with the excavator body, which works in conjunction with the support spring to play a buffering role.

[0009] As a further preferred embodiment of this utility model, multiple auxiliary airbags are fixedly connected to both sides of the shock-absorbing airbag. One side of the auxiliary airbag is inserted between two corresponding sleeves. The shock-absorbing airbag is filled with gas, which can support the two shock-absorbing pads and improve the shock absorption effect. The auxiliary airbag can provide compensating air pressure for the shock-absorbing airbag.

[0010] As a further preferred embodiment of this utility model, the longitudinal section of the side beam is T-shaped, and several support plates are fixedly connected to one side of the side beam relative to the base frame. One side of the support plate abuts against one side of the base frame. On the one hand, the side beam can provide conditions for the installation of the abutment plate, and on the other hand, it can work with the support plate to improve the connection strength between the side beam and the base frame.

[0011] As a further preferred embodiment of this utility model, a number of guide bolts are fixedly connected to one side of the end sleeve. The end of the guide bolt away from the abutment plate is inserted into the base frame and the side beam. Several nuts are threadedly connected to the outer side of the guide bolt near the side beam. A compression spring is fitted onto the guide bolt located between the abutment plate and the base frame. The side of the abutment plate opposite to the guide bolt abuts against the corresponding side of the auxiliary airbag. The abutment plate can continuously apply pressure to the auxiliary airbag with the help of the compression spring, thereby providing continuous air pressure replenishment to the shock-absorbing airbag and improving the service life of the shock-absorbing airbag.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the combination of shock-absorbing pads, shock-absorbing airbags, and support springs forms multiple buffers, avoiding the problem of shock absorption failure caused by the elastic decay of a single shock-absorbing component, thus improving the shock absorption effect of the cab. At the same time, the auxiliary airbag, together with the compression spring and the abutment plate, can continuously replenish the air pressure of the shock-absorbing airbag, extend its service life, and reduce the frequency of maintenance. The protective rubber sleeve connecting the cab and the vehicle body can isolate mud, sand, and gravel, preventing wear on the shock-absorbing components. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the shock absorber frame structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the basic frame structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the shock absorber frame of this utility model;

[0018] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 This is a schematic diagram of the connection structure between the contact plate and the guide bolt of this utility model.

[0020] In the diagram: 1. Cab; 2. Base frame; 3. Partition; 4. Side beam; 5. Shock absorber pad; 6. Shock absorber airbag; 7. Sleeve; 8. Support spring; 9. End sleeve; 10. Contact plate; 11. Protective rubber sleeve; 12. Support plate; 13. Secondary airbag; 14. Slot; 15. Guide bolt; 16. Compression spring; 17. Shock absorber frame. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-6 As shown, the present invention provides an excavator cab with a shock absorption device, including a cab 1, a shock absorption frame 17 fixedly connected to the bottom of the cab 1, the shock absorption frame 17 including a base frame 2, a partition 3 fixedly connected to the inner circumferential side of the base frame 2, side beams 4 fixedly connected to both sides of the base frame 2, a plurality of shock absorption pads 5 fixedly connected inside the base frame 2, and a shock absorption airbag 6 fixedly connected between two adjacent shock absorption pads 5, a plurality of sleeves 7 fixedly connected inside the partition 3, a support spring 8 inserted inside the sleeve 7, an end sleeve 9 fixedly connected to the upper and lower ends of the support spring 8, and two end sleeves 9 respectively fixedly connected to the corresponding shock absorption pads 5 away from the end faces of the support spring 8, and a plurality of abutment plates 10 movably connected to both sides of the base frame 2, and the abutment plates 10 are also located between two sleeves 7.

[0023] like Figure 1 As shown, a protective rubber sleeve 11 is fixedly connected between the cab 1 and the vehicle body. After the cab 1 is installed on the excavator body through the shock absorber frame 17, the shock absorber frame 17 can be protected by the surrounding protective rubber sleeve 11.

[0024] like Figures 2-6As shown, the outer circumferential of the shock-absorbing pad 5 has a slot 14, which engages with the inner side to enhance the connection strength between the shock-absorbing pad 5 and the base frame 2. The upper surface of one shock-absorbing pad 5 contacts the bottom of the cab 1, while the lower surface of the other shock-absorbing pad 5 contacts the excavator body, working in conjunction with the support spring 8 to provide cushioning. Multiple auxiliary airbags 13 are fixedly connected to both sides of the shock-absorbing airbag 6. One side of each auxiliary airbag 13 is inserted between two corresponding sleeves 7. The shock-absorbing airbag 6 is filled with gas, which supports the two shock-absorbing pads 5 and improves the shock absorption effect. The auxiliary airbags 13 provide compensating air pressure for the shock-absorbing airbag 6. The longitudinal section of the side beam 4 is T-shaped. Several support plates 12 are fixedly connected to one side of the side beam 4 relative to the base frame 2, with one side of the support plate 12 abutting against one side of the base frame 2. On the one hand, it provides conditions for the installation of the contact plate 10. On the other hand, it can work with the support plate 12 to improve the connection strength between the side beam 4 and the base frame 2. Several guide bolts 15 are fixedly connected to one side of the end sleeve 9. The end of the guide bolt 15 away from the contact plate 10 is inserted into the base frame 2 and the side beam 4. Several nuts are threaded on the outer side of the guide bolt 15 near the side beam 4. The guide bolt 15 located between the contact plate 10 and the base frame 2 is fitted with a compression spring 16. The side of the contact plate 10 away from the guide bolt 15 abuts against the corresponding side of the auxiliary airbag 13. The contact plate 10 can continuously apply pressure to the auxiliary airbag 13 with the help of the compression spring 16, so that the auxiliary airbag 13 can provide continuous air pressure replenishment to the shock-absorbing airbag 6 and improve the service life of the shock-absorbing airbag 6.

[0025] It should be noted that this utility model is an excavator cab with a shock absorption device. When the excavator vibrates during operation, the vibration energy is first transmitted to the shock-absorbing pad 5, which is in direct contact with the excavator body. The shock-absorbing pad 5 is made of a highly elastic material. When its internal molecular structure is subjected to vibration impact, it undergoes elastic deformation. Through the material's own damping characteristics, it absorbs a portion of the vibration energy and transmits the unabsorbed energy upwards, completing the initial buffering of the vibration and reducing the vibration intensity directly transmitted to the cab 1. Then, the vibration energy that is not completely absorbed by the shock-absorbing pad 5 is transmitted to the shock-absorbing airbag 6 between two adjacent shock-absorbing pads 5. The shock-absorbing airbag 6 is pre-filled with gas at a specific pressure. When subjected to vibration impact, the wall of the shock-absorbing airbag 6 expands or contracts, and the internal gas is compressed or released. During this process, the collision and friction between gas molecules consume a large amount of vibration energy. At the same time, the elastic deformation of the shock-absorbing airbag 6 further buffers the vibration, forming a second shock-absorbing barrier, further weakening the impact of vibration on the cab 1.

[0026] In addition, during long-term use of the shock absorber airbag 6, if the air pressure drops, the contact plate 10 will be continuously pushed by the compression spring 16 on the guide bolt 15, thus maintaining pressure on the auxiliary airbag 13. When the air pressure of the shock absorber airbag 6 is insufficient, the gas in the auxiliary airbag 13 will automatically flow to the shock absorber airbag 6 to maintain its normal working air pressure, extend the service life of the shock absorber airbag 6, and thus reduce the number of maintenance times.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An excavator cab with a shock absorption device, characterized in that: The system includes a cab (1), a shock absorber frame (17) fixedly connected to the bottom of the cab (1), a base frame (2) including a partition (3) fixedly connected to the inner circumference of the base frame (2), side beams (4) fixedly connected to both sides of the base frame (2), several shock absorber pads (5) fixedly connected inside the base frame (2), and shock absorber airbags (6) fixedly connected between two adjacent shock absorber pads (5), several sleeves (7) fixedly connected inside the partition (3), a support spring (8) inserted inside the sleeve (7), an end sleeve (9) fixedly connected to the upper and lower ends of the support spring (8), and two end sleeves (9) fixedly connected to the corresponding shock absorber pads (5) respectively, opposite to the end face of the support spring (8), and multiple abutment plates (10) movably connected to both sides of the base frame (2), and the abutment plates (10) are also located between two sleeves (7).

2. The excavator cab with shock absorption device according to claim 1, characterized in that: A protective rubber sleeve (11) is fixedly connected between the cab (1) and the vehicle body.

3. The excavator cab with shock absorption device according to claim 1, characterized in that: The shock-absorbing pad (5) has a slot (14) on its outer circumference, and the slot (14) is engaged with the inner side.

4. The excavator cab with shock absorption device according to claim 1, characterized in that: Multiple auxiliary airbags (13) are fixedly connected to both sides of the shock-absorbing airbag (6), and one side of the auxiliary airbag (13) is inserted between two corresponding sleeves (7).

5. The excavator cab with shock absorption device according to claim 4, characterized in that: The longitudinal section of the side beam (4) is T-shaped. Several support plates (12) are fixedly connected to one side of the side beam (4) relative to the base frame (2), and one side of the support plate (12) abuts against one side of the base frame (2).

6. The excavator cab with shock absorption device according to claim 5, characterized in that: Several guide bolts (15) are fixedly connected to one side of the end sleeve (9). The end of the guide bolt (15) away from the abutment plate (10) is inserted into the base frame (2) and the side beam (4). Several nuts are threaded on the outer side of the guide bolt (15) near the side beam (4). The guide bolt (15) located between the abutment plate (10) and the base frame (2) is fitted with a compression spring (16). The side of the abutment plate (10) opposite to the guide bolt (15) abuts against the corresponding auxiliary airbag (13).

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