Adjusting and limiting device for side door of excavator

Abstract

The utility model relates to the technical field of limiting devices, in particular to an excavator side door adjusting and limiting device. According to the technical scheme, the device comprises a shaft rod, the two ends of the shaft rod are movably sleeved with shaft sleeves respectively, and first connecting plates are fixedly arranged on the outer walls of the shaft sleeves; and the second connecting plate is fixedly arranged on the outer wall of the shaft rod, and limiting assemblies used for limiting the shaft sleeve are fixedly arranged at the two ends of the second connecting plate correspondingly. The opening and closing position of the side door can be precisely limited, and the side door is prevented from being in an unconstrained free state under outdoor wind blowing, so that the side door is prevented from violently colliding with a vehicle body, the risk that glass of the side door is broken due to collision is greatly reduced, and the equipment maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of limiting device technology, and in particular to an excavator side door adjustment limiting device. Background Technology

[0002] Excavator side doors are typically located on either side of the cab or engine compartment, playing a crucial role in the excavator's overall structure and operation. The door panels are mostly made of high-strength metals such as steel, although some use aluminum alloy to enhance heat dissipation and reduce weight. The door panels include ventilation holes and observation windows. Existing excavator side doors are connected to the vehicle body via hinges. When operators open the side doors for equipment inspection, getting on / off, or loading / unloading, the side doors are in an unrestrained, free state, exposed to outdoor winds. This can lead to violent impacts between the side doors and the vehicle body. Since side doors usually have glass panels to ensure the operator's visibility, the glass is easily shattered under such unrestricted impacts. This not only increases equipment maintenance costs but also compromises the airtightness of the cab, allowing wind, sand, and rainwater to enter, affecting the operator's working environment and visibility, and reducing work efficiency. Therefore, this utility model proposes an excavator side door adjustment and limiting device. Utility Model Content

[0003] The purpose of this utility model is to address the problem in the background technology where the side door of an excavator is connected to the vehicle body via a hinge. When the operator opens the side door for equipment inspection, getting on or off the vehicle, or loading and unloading goods, the side door is in an unrestrained free state. Outdoor wind forces cause the side door to violently collide with the vehicle body. Since the side door is usually fitted with glass to ensure the operator's visibility, under such unrestricted impact, the glass bears a huge impact force and is very easy to break. This not only increases the equipment maintenance cost, but also makes the cab lose its airtightness, allowing wind, sand, rainwater, etc. to easily enter, affecting the operator's working environment and vision, and reducing work efficiency. The present invention proposes an excavator side door adjustment and limiting device.

[0004] The technical solution of this utility model is as follows: an excavator side door adjustment and limiting device, comprising: a shaft, with bushings movably sleeved at both ends of the shaft, and a first connecting plate fixedly disposed on the outer wall of the bushing; and a second connecting plate fixedly disposed on the outer wall of the shaft, with limiting components for limiting the bushings fixedly disposed at both ends of the second connecting plate.

[0005] Optionally, the limiting component includes fixing strips respectively fixedly sleeved on both ends of the shaft, a guide groove is provided on one side of the fixing strip, a limiting screw is provided between the fixing strips, the limiting screw is movably sleeved with the guide groove, the two ends of the limiting screw are respectively threaded with limiting nuts, a guide strip is movably passed through one end of the fixing strip, and an insert rod is fixedly connected to one end of the guide strip.

[0006] Optionally, a frame is fixedly provided on one side of the first connecting plate, and the frame is inserted into the rod.

[0007] Optionally, a plurality of limiting slots are provided on one side of the fixing strip, and a collar is movably sleeved on both ends of the limiting screw, and a limiting block is fixedly provided on one side of the collar.

[0008] Optionally, a buffer block is fixedly provided at one end of the guide bar.

[0009] Optionally, a buffer sleeve is fixedly sleeved on the outer wall of the limiting screw.

[0010] Optionally, the fixing strip and the guide strip are configured with an arc-shaped structure.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] This utility model, through the coordinated design of shaft, bushing, first connecting plate, second connecting plate and limiting component, allows the limiting screw, limiting nut, guide strip and plug in the limiting component to precisely limit the opening and closing position of the side door when the operator opens the excavator side door. This prevents the side door from being in an unrestrained free state under outdoor wind, thereby preventing the side door from violently colliding with the vehicle body, greatly reducing the risk of the side door glass breaking due to impact, and reducing equipment maintenance costs.

[0013] Furthermore, this utility model, through the combined use of buffer blocks and buffer sleeves, can reduce the buffering effect of the fixing strip and guide strip, quickly absorb the impact force generated by the impact, and convert it into internal energy for dissipation; the buffer sleeve simultaneously plays a guiding and supporting role, limiting the excessive displacement of the buffer block, so that the impact force is evenly distributed, effectively reducing the collision force between the two, and significantly improving the buffering effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a side door adjustment and limit device for an excavator.

[0015] Figure 2 for Figure 1 A schematic diagram of the split structure;

[0016] Figure 3 for Figure 2 Schematic diagram of the middle limit component;

[0017] Figure 4 for Figure 3 A schematic diagram of the split structure.

[0018] Figure label:

[0019] 1. Shaft; 2. Bushing; 3. First connecting plate; 4. Second connecting plate;

[0020] 5. Limiting component; 51. Fixing strip; 52. Guide groove; 53. Limiting screw; 54. Limiting nut; 55. Guide strip; 56. Insert rod;

[0021] 6. Insert frame; 7. Limiting slot; 8. Collar; 9. Limiting block; 10. Buffer block; 11. Buffer sleeve. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Example

[0028] like Figure 1 and Figure 2As shown, the present invention proposes an excavator side door adjustment and limiting device, comprising: a shaft 1, with a bushing 2 movably sleeved at both ends of the shaft 1, a first connecting plate 3 fixedly provided on the outer wall of the bushing 2, and multiple through holes provided on the first connecting plate 3 to facilitate stable connection with the excavator side door by bolts, and a insertion frame 6 fixedly provided on one side of the first connecting plate 3.

[0029] Furthermore, a second connecting plate 4 is fixedly installed on the outer wall of the shaft 1, and multiple through holes are provided on the second connecting plate 4 to facilitate stable connection with the excavator body by bolts.

[0030] like Figures 1 to 4 As shown, the two ends of the second connecting plate 4 are respectively fixedly provided with limiting components 5 for limiting the bushing 2. The limiting component 5 includes a fixing strip 51 that is fixedly sleeved at both ends of the shaft 1. The fixing strip 51 is arc-shaped. Multiple limiting slots 7 are opened on one side of the fixing strip 51. The limiting slots 7 are located at the opening of the guide groove 52. The guide groove 52 is opened on one side of the fixing strip 51. The guide groove 52 is arc-shaped. Limiting screws 53 are provided between the fixing strips 51. A buffer sleeve 11 is fixedly sleeved on the outer wall of the limiting screw 53 to provide buffer and prevent the excavator side door from colliding with the vehicle body.

[0031] Secondly, the limiting screw 53 is movably sleeved with the guide groove 52, which can guide the movement of the limiting screw 53. Both ends of the limiting screw 53 are movably sleeved with collars 8. A limiting block 9 is fixedly provided on one side of the collar 8, and the limiting block 9 can be engaged with the limiting groove 7 to increase the stability of limiting the limiting screw 53.

[0032] Furthermore, the two ends of the limiting screw 53 are respectively threaded with limiting nuts 54, which can limit the limiting screw 53. One end of the fixing bar 51 has a guide bar 55 that moves through it. The guide bar 55 is arc-shaped, which allows the guide bar 55 to move stably inside the guide groove 52 on the fixing bar 51. One end of the guide bar 55 is fixedly provided with a buffer block 10, which can provide buffer for the guide bar 55. One end of the guide bar 55 is fixedly connected with an insert rod 56. The insert frame 6 is inserted into the insert rod 56, which allows the bushing 2 to drive the guide bar 55 to move stably.

[0033] In this embodiment, the excavator side door is connected to the first connecting plate 3, and the second connecting plate 4 is connected to the excavator body, thereby ensuring the stable installation of the excavator side door.

[0034] When adjusting the excavator side door opening angle, loosen the limit nut 54 from the limit screw 53, and move the collar 8 to move the limit block 9 out of the limit slot 7. Move the limit screw 53 inside the guide groove 52 to the excavator side door opening angle, and then move the collar 8 to move the limit block 9 into the corresponding limit slot 7.

[0035] When the excavator side door is opened, the excavator side door drives the bushing 2 to rotate on the shaft 1 via the first connecting plate 3. At the same time, the first connecting plate 3 drives the insert frame 6 to rotate. The insert frame 6 drives the guide bar 55 to move inside the guide groove 52 on the fixed bar 51 via the insert rod 56. The guide bar 55 drives the buffer block 10 to hit the buffer sleeve 11, thereby ensuring the opening angle of the excavator side door and preventing it from colliding with the vehicle body.

[0036] The above specific embodiments are merely 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 side door adjustment and limiting device for an excavator, characterized in that, include: A shaft (1) is provided with bushings (2) movably sleeved at both ends of the shaft (1), and a first connecting plate (3) is fixedly provided on the outer wall of the bushings (2); A second connecting plate (4) is fixedly installed on the outer wall of the shaft (1), and limiting components (5) for limiting the bushing (2) are fixedly installed at both ends of the second connecting plate (4).

2. The side door adjustment stop device for excavators according to claim 1, characterized in that, The limiting component (5) includes a fixing strip (51) that is fixedly sleeved at both ends of the shaft (1). A guide groove (52) is provided on one side of the fixing strip (51). A limiting screw (53) is provided between the fixing strips (51). The limiting screw (53) is movably sleeved with the guide groove (52). A limiting nut (54) is threaded onto both ends of the limiting screw (53). A guide strip (55) is movably passed through one end of the fixing strip (51). A plug rod (56) is fixedly connected to one end of the guide strip (55).

3. The side door check device for excavators according to claim 2, wherein A frame (6) is fixedly provided on one side of the first connecting plate (3), and the frame (6) is inserted into the rod (56).

4. The side door adjustment stop device for excavators of claim 2, wherein, The fixing strip (51) has multiple limiting slots (7) on one side, and the two ends of the limiting screw (53) are respectively movably sleeved with collars (8), and a limiting block (9) is fixedly provided on one side of the collar (8).

5. The excavator side door adjustment and limiting device according to claim 2, characterized in that, A buffer block (10) is fixedly provided at one end of the guide bar (55).

6. The side door check device for excavators according to claim 2, wherein The outer wall of the limiting screw (53) is fixedly sleeved with a buffer sleeve (11).

7. The side door check device for excavators according to claim 2, wherein The fixing strip (51) and guide strip (55) are arranged in an arc shape.

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