Soundproofing and noise reduction type excavator sealed cab

Abstract

This utility model relates to the field of excavators, and more particularly to a soundproof and noise-reducing sealed cab for excavators. The technical solution includes: a cab door, including a main door, the edge of which is rotatably connected to the cab via hinges; a sealing frame is slidably connected to the side of the main door facing the cab; an air-filled bladder is fixedly installed between the main door and the sealing frame; a door frame is provided on the side of the cab, and the sealing frame contacts the door frame; the door frame has a stepped structure, the air-filled bladder fills the door frame, and an air-injecting component is provided on the side of the main door. This utility model, through the contact between the sealing frame and the door frame, further closes the main door, compressing the air-filled bladder, causing it to deform and extend into the sealing groove. The air-filled bladder fills the sealing groove, improving the sealing effect. Simultaneously, the gas inside the air-filled bladder provides good cushioning and shock absorption, reducing the transmission of vibrations and noise generated during excavator operation to the cab.

Description

Technical Field

[0001] This utility model relates to the field of excavators, and in particular to a soundproof and noise-reducing sealed cab for excavators. Background Technology

[0002] An excavator is a type of engineering machinery used for digging, loading, unloading, and transporting materials. Excavators typically operate in dusty construction sites. Good sealing can effectively prevent dust from entering the cab, keep the air inside the cab clean, reduce the harm of dust to the operator's respiratory system, and also prevent dust from accumulating on the dashboard, control handles, and other parts, affecting their performance and service life.

[0003] The edges of the doors and windows in the cockpit are usually fitted with sealing strips, which are designed in a specific shape to fit tightly against the gaps between the door and window frame and the glass or door panel, effectively preventing the penetration of dust, rainwater and air.

[0004] However, the aforementioned sealing strips have insufficient deformation capacity. They have a certain degree of elasticity and can provide some cushioning, but their cushioning performance is relatively limited. For some irregularly shaped or deformed parts, they may not fit completely, leaving tiny gaps and resulting in insufficient sealing effect. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art where insufficient sealant strip shape affects the sealing effect, and to propose a soundproof and noise-reducing sealed cab for excavators.

[0006] The technical solution of this utility model: a soundproof and noise-reducing sealed cab for an excavator, including a cab, a seat fixedly installed inside the cab, and a windshield fixedly installed on the front side of the cab;

[0007] The hatch includes a main door, the edge of which is rotatably connected to the cockpit via a hinge. A sealing frame is slidably connected to the side of the main door facing the cockpit. An airbag is fixedly installed between the main door and the sealing frame. A door frame is provided on the side of the cockpit, and the sealing frame contacts the door frame.

[0008] The door frame adopts a stepped structure, the inflatable airbag fills the door frame, and an air replenishment device is provided on the side of the main door.

[0009] Optionally, a sealing groove is provided in the middle of the door frame, the cross-section of the sealing groove adopts a T-shaped structure, and the filling airbag extends into the sealing groove.

[0010] Optionally, a guide frame is fixedly installed on the side of the main door facing the cockpit, and the side of the sealing frame is slidably connected to the guide frame.

[0011] Optionally, a side windshield is fixedly installed in the middle of the main door, and the interior of the main door is filled with sound insulation cotton.

[0012] Optionally, both the side windows and the front windshield are made of double-layered glass, and the surface of the door frame is covered with sealing strips.

[0013] Optionally, the air replenishment component includes a docking pressure plate, the side of which is fixedly connected to the filling airbag, and an air replenishment cylinder with automatic stop function is fixedly installed between the side of the docking pressure plate and the main door. A return spring is elastically connected between the fixing part of the air replenishment cylinder and the docking pressure plate.

[0014] Optionally, a fixing block is fixedly installed inside the connection between the filling airbag and the docking pressure plate, and the fixing block is fixedly connected to the sealing frame.

[0015] Optionally, the air inlet of the air supply cylinder is located outside the filling air bag, and the exhaust port of the air supply cylinder is fixedly connected to the filling air bag via a hose.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] This invention, through the contact between the sealing frame and the door frame, further closes the main door, causing the filling airbag to be compressed, so that the filling airbag deforms and extends into the sealing groove. The filling airbag fills the sealing groove, improving the sealing effect. At the same time, the gas inside the filling airbag can provide a good buffering and shock absorption effect, reducing the transmission of vibration and noise generated during excavator operation to the cab.

[0018] Furthermore, by opening and closing the main door, and with the help of the return spring, the sealing frame reciprocates, thereby allowing the air supply cylinder to replenish the filling airbag with gas, preventing the loss of gas inside the filling airbag from affecting the sealing and noise reduction effect. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of this utility model is provided;

[0020] Figure 2 A schematic diagram of the main door structure in the separated state of this utility model is provided;

[0021] Figure 3 A schematic diagram of the sealing frame structure of this utility model in the separated state is provided;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of the air supply cylinder structure in part A.

[0023] Reference numerals: 1. Cockpit; 2. Seat; 3. Door; 31. Main door; 32. Guide frame; 33. Sealing frame; 34. Inflatable airbag; 35. Door frame; 36. Sealing groove; 37. Side windshield; 4. Air replenishment component; 41. Docking pressure plate; 42. Air replenishment cylinder; 43. Return spring; 5. Front windshield. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0025] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] This embodiment proposes a soundproof and noise-reducing sealed cab for excavators, such as... Figure 1 As shown, it includes a cockpit 1, a seat 2 is fixedly installed inside the cockpit 1, and a windshield 5 is fixedly installed on the front side of the cockpit 1.

[0031] like Figure 2 and Figure 3 As shown, a hatch 3 is provided on the side of the cockpit 1. The hatch 3 includes a main door 31. The edge of the main door 31 is rotatably connected to the cockpit 1 via a hinge. A sealing frame 33 is slidably connected to the side of the main door 31 facing the cockpit 1. An airbag 34 is fixedly installed between the main door 31 and the sealing frame 33. A door frame 35 is provided on the side of the cockpit 1. The sealing frame 33 contacts the door frame 35.

[0032] When the main door 31 is closed, because the door frame 35 adopts a stepped structure, the sealing frame 33 cannot move after it comes into contact with the door frame 35. When the main door 31 is moved further, the sealing frame 33 is squeezed by the main door 31 and the door frame 35, so that the filling airbag 34 deforms and fills the gap between the main door 31 and the door frame 35, thereby improving the sealing effect.

[0033] A sealing groove 36 is provided in the middle of the door frame 35. The cross-section of the sealing groove 36 adopts a T-shaped structure. After the filling airbag 34 is compressed, the filling airbag 34 extends into the sealing groove 36 and fills the sealing groove 36 to improve the sealing effect. In addition, since the gas inside the filling airbag 34 can provide a good buffering and shock absorption effect, it can effectively reduce the vibration and noise generated during excavator operation from being transmitted to the cab 1, providing a more comfortable working environment for the operator.

[0034] like Figure 3 As shown, a guide frame 32 is fixedly installed on the side of the main door 31 facing the cockpit 1, and the side of the sealing frame 33 is slidably connected to the guide frame 32. The guide frame 32 guides the sealing frame 33 to prevent the sealing frame 33 from completely separating from the main door 31.

[0035] A side windshield 37 is fixedly installed in the middle of the main door 31. The interior of the main door 31 is filled with sound insulation cotton. Both the side windshield 37 and the windshield 5 are double-glazed, improving the overall noise reduction effect of the cockpit 1. A sealing strip is laid on the surface of the door frame 35. The sealing strip reduces the impact force between the sealing frame 33 and the door frame 35.

[0036] In this embodiment, after the sealing frame 33 contacts the door frame 35, the main door 31 is further closed, which compresses the filling airbag 34, causing the filling airbag 34 to deform and extend into the sealing groove 36. The filling airbag 34 fills the sealing groove 36 to improve the sealing effect. At the same time, the gas inside the filling airbag 34 can provide a good buffering and shock absorption effect, reducing the transmission of vibration and noise generated during excavator operation to the cab 1.

[0037] Example 2

[0038] Based on Example 1, this example proposes a soundproof and noise-reducing sealed cab for excavators, such as... Figure 3 and Figure 4 As shown, an air supply component 4 is provided on the side of the main door 31. The air supply component 4 includes a docking pressure plate 41. The side of the docking pressure plate 41 is fixedly connected to the filling air bag 34. An air supply cylinder 42 with automatic stop is fixedly installed between the side of the docking pressure plate 41 and the main door 31. A return spring 43 is elastically connected between the fixed part of the air supply cylinder 42 and the docking pressure plate 41.

[0039] A fixing block is fixedly installed inside the connection between the filling airbag 34 and the docking pressure plate 41, and the fixing block is fixedly connected to the sealing frame 33.

[0040] During the closing of the main door 31, the sealing frame 33 is displaced by compression. The sealing frame 33 uses the fixing block inside the filling air bladder 34 to compress the docking pressure plate 41, causing the air supply cylinder 42 to pump air once, timely replenishing the air pressure inside the filling air bladder 34 and preventing the gradual loss of gas inside the filling air bladder 34. In the prior art, there is an air supply cylinder 42 that automatically stops pumping air. When the air pressure inside the filling air bladder 34 reaches a set amount, it stops supplying gas to the filling air bladder 34 to prevent the filling air bladder 34 from continuously expanding.

[0041] The return spring 43 is used to reset the mating pressure plate 41. The air inlet of the air supply cylinder 42 is located outside the filling air bladder 34, and the exhaust port of the air supply cylinder 42 is fixedly connected to the filling air bladder 34 through a hose. The air supply cylinder 42 draws gas from the outside of the filling air bladder 34 and introduces the gas into the filling air bladder 34 through the hose.

[0042] In this embodiment, the opening and closing of the main door 31, along with the reciprocating motion of the reset spring 43, causes the sealing frame 33 to reciprocate, thereby allowing the air supply cylinder 42 to replenish the gas in the filling airbag 34, preventing the loss of gas inside the filling airbag 34 from affecting the sealing and noise reduction effect.

[0043] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A soundproof and noise-reducing sealed cab for an excavator, comprising a cab (1), wherein a seat (2) is fixedly installed inside the cab (1), and a windshield (5) is fixedly installed on the front side of the cab (1), characterized in that: The hatch (3) includes a main door (31), the edge of which is rotatably connected to the cockpit (1) via a hinge, a sealing frame (33) is slidably connected to the side of the main door (31) facing the cockpit (1), an airbag (34) is fixedly installed between the main door (31) and the sealing frame (33), and a door frame (35) is provided on the side of the cockpit (1), the sealing frame (33) is in contact with the door frame (35); The door frame (35) adopts a stepped structure, the filling airbag (34) fills the door frame (35), and the side of the main door (31) is provided with an air replenishment component (4).

2. The soundproof and noise-reducing sealed cab for excavators according to claim 1, characterized in that: A sealing groove (36) is provided in the middle of the door frame (35). The cross-section of the sealing groove (36) adopts a T-shaped structure, and the filling airbag (34) extends into the sealing groove (36).

3. The soundproofing and noise reducing excavator sealed cab of claim 2, wherein: A guide frame (32) is fixedly installed on the side of the main door (31) facing the cockpit (1), and the side of the sealing frame (33) is slidably connected to the guide frame (32).

4. The soundproof and noise-reducing sealed cab for excavators according to claim 3, characterized in that: The main door (31) is fixedly installed with a side windshield (37) in the middle, and the interior of the main door (31) is filled with sound insulation cotton.

5. The soundproofing and noise reducing excavator sealed cab of claim 4, wherein: Both the side windshield (37) and the front windshield (5) are made of double-layer glass, and the surface of the door frame (35) is covered with sealing strips.

6. The soundproof and noise-reducing sealed cab for excavators according to claim 5, characterized in that: The air replenishment component (4) includes a docking pressure plate (41), the side of which is fixedly connected to the filling air bag (34), and an air replenishment cylinder (42) with automatic stop is fixedly installed between the side of the docking pressure plate (41) and the main door (31). A return spring (43) is elastically connected between the fixing part of the air replenishment cylinder (42) and the docking pressure plate (41).

7. The sound attenuating, noise reducing, excavator sealed cab of claim 6, wherein: A fixing block is fixedly installed inside the connection between the filling airbag (34) and the docking pressure plate (41), and the fixing block is fixedly connected to the sealing frame (33).

8. The sound attenuating, noise reducing, excavator sealed cab of claim 7, wherein: The air inlet of the air supply cylinder (42) is located outside the filling air bag (34), and the exhaust port of the air supply cylinder (42) is fixedly connected to the filling air bag (34) through a hose.

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