A back cover opening and locking mechanism of an excavator

Abstract

The utility model relates to excavator rear cover technical field, concretely relates to a kind of excavator rear cover opening locking mechanism, including the machine body with hatch, hatch is equipped with rear cover, rear cover upper portion is connected with machine body by hinged structure mode;The machine body of hatch side is equipped with support plate with fixed structure mode, support plate is equipped with intercommunicating guide slot, limit slot, guide slot is located in the upper portion of limit slot, protrusion is arranged in the lower wall of the side of limit slot close to guide slot, protrusion is fixedly connected with support plate;Supporting rod is connected with rear cover hinged, supporting rod lower end is connected with guide slot, limit slot with sliding structure mode, when rear cover is completely opened, one end of supporting rod is located in limit slot and is blocked by protrusion, the locking after opening is completed, replace gas spring by above mechanical structure, improve the structural stability under extreme working condition, reduce security risk.

Description

Technical Field

[0001] This utility model relates to the field of excavator rear cover technology, specifically to an excavator rear cover opening and locking mechanism. Background Technology

[0002] An excavator, also known as a digging machine or a soil excavator, is an earthmoving machine that uses a bucket to dig materials above or below the machine's bearing surface and load them into transport vehicles or unload them into a stockpile.

[0003] A typical mini excavator consists of three main parts: the working device, the body, and the chassis. The body, as the core of the entire excavator system, encompasses the fuel or hydraulic system, engine system, electrical system, operating system, and numerous auxiliary devices. The engine system is usually installed at the rear of the excavator body and typically has an openable or removable rear cover for easy routine maintenance and repair of the engine, hydraulic pump, air filter, oil filter, and other components.

[0004] The rear cover of existing mini excavators is a flip-top type, usually supported by a gas spring. After the rear cover is opened, maintenance personnel are positioned under it to check the engine oil, replace the filter, and perform other maintenance work. If the gas spring suddenly loses pressure due to aging, worn seals, or cylinder damage, the heavy rear cover will fall instantly under gravity, causing serious crushing or pinching injuries, posing a significant safety hazard. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an excavator rear cover opening and locking mechanism, the technical solution of which is as follows: A rear cover opening and locking mechanism for excavators, characterized in that it includes: The fuselage has a hatch, and a rear cover is provided at the hatch. The upper part of the rear cover is connected to the fuselage by a hinge structure. The support plate is connected to the fuselage on one side of the hatch using a fixed structure. The guide groove and the limiting groove are formed in the support plate. The guide groove and the limiting groove are connected, and the guide groove is located above the limiting groove. The protrusion is located on the lower wall of the limiting groove near the guide groove, and is fixedly connected to the support plate. The support rod has one end connected to the guide groove and the limiting groove in a sliding structure. When the back cover is fully opened, one end of the support rod is located in the limiting groove and is blocked by the protrusion. The other end of the strut is connected to the rear cover by a hinged structure.

[0006] Furthermore, the fuselage above the hatch is equipped with two U-shaped hooks through a fixed structure. The upper part of the vertical section on the outside of the U-shaped hook is equipped with a hinge plate through a hinge structure, and the hinge plate is connected to the rear cover through a fixed structure. The upper part of the vertical section on the inside of the U-shaped hook is fixedly equipped with an edge, and the edge is connected to the fuselage by bolts.

[0007] Furthermore, the limiting groove turns outward relative to the guide groove, and the inner sidewall of the protrusion extends to the outer sidewall of the guide groove in an arc shape. A vertical section connected to the arc shape is provided on the inner side of the protrusion.

[0008] Furthermore, the strut includes a connecting rod, and end rod A and end rod B are fixedly installed at both ends of the connecting rod, and end rod A and end rod B are both arranged perpendicular to the connecting rod. End rod A is connected to the rear cover by a hinge; The end rod B is connected to the guide groove and the limiting groove by a sliding structure.

[0009] Furthermore, a hinge seat is fixedly installed on the upper inner side of the rear cover, and the hinge seat is hingedly connected to the end rod A.

[0010] Furthermore, the end rod B is fitted with a pin through a guide groove passing through the support plate.

[0011] Furthermore, a washer is fitted on the outside of the end rod B between the connecting rod and the support plate.

[0012] The beneficial effects of this utility model are as follows: a guide groove and a limiting groove are opened in the support plate. When the back cover is fully opened, one end of the support rod is located in the limiting groove and is blocked by the protrusion, thus completing the locking after opening. The above mechanical structure replaces the gas spring, improving the structural stability under extreme working conditions and reducing safety hazards.

[0013] By setting washers, the connecting rod can be prevented from entering the guide groove, thus improving the smoothness of the end rod B's operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention in its closed state; Figure 2 This is a schematic diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection structure between the support plate and the U-shaped hook of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model after it has been opened; In the picture: 1. Back cover, 2. Support plate, 3. Guide groove, 4. Limiting groove, 5. Protrusion, 6. Support rod, 61. Connecting rod, 62. End rod A, 63. End rod B, 7. U-shaped hook, 8. Hinge plate, 9. Edge, 10. Hinge seat, 11. Washer. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows: An excavator rear cover opening and locking mechanism includes a machine body with a hatch, a rear cover 1 at the hatch, and the upper part of the rear cover 1 connected to the machine body by a hinge structure. A support plate 2 is fixedly installed on one side of the machine body, and the support plate 2 has a guide groove 3 and a limiting groove 4 that are connected. The guide groove 3 is located above the limiting groove 4, and a protrusion 5 is provided on the lower wall of the limiting groove 4 near the guide groove 3. The protrusion 5 is fixedly connected to the support plate 2. A support rod 6 is hinged to the rear cover 1, and the lower end of the support rod 6 is connected to the guide groove 3 and the limiting groove 4 by a sliding structure. When the rear cover 1 is fully opened, one end of the support rod 6 is located in the limiting groove 4 and is blocked by the protrusion 5, thus locking after opening. The above mechanical structure replaces the gas spring, improving the structural stability under extreme working conditions and reducing safety hazards.

[0016] It should be noted that, as Figure 3 The limiting groove 4 shown turns outward relative to the guide groove 3, similar to an L-shaped structure. The inner wall of the protrusion 5 has an arc-shaped structure that extends to the outer wall of the guide groove 3. The inner side of the protrusion 5 is provided with a vertical section that connects to the arc-shaped structure to ensure smooth sliding of the support rod 6.

[0017] Specifically, the support rod 6 includes a connecting rod 61, with end rods A62 and B63 fixedly installed at both ends of the connecting rod 61. Both end rods A62 and B63 are arranged perpendicular to the connecting rod 61. End rod A62 is connected to the rear cover 1 by a hinge, and end rod B63 is connected to the guide groove 3 and the limiting groove 4 by a sliding structure.

[0018] It should be noted that a reinforcing beam is fixedly installed on the upper inner side of the back cover 1, and a hinge seat 10 is fixedly installed on the reinforcing beam. The hinge seat 10 is hingedly connected to the end rod A62. The supporting force is transmitted to the back cover 1 through the reinforcing beam, which increases the force-bearing area of ​​the back cover and prevents the back cover from deforming.

[0019] To prevent the end rod B63 from separating from the guide groove 33, a pin is provided on one side of the end rod B63 that passes through the support plate 2 via the guide groove 3.

[0020] It should be noted that the end rod B63 between the connecting rod 61 and the support plate 2 is fitted with a washer 11, which can prevent the connecting rod from entering the guide groove and improve the smoothness of the end rod B's operation.

[0021] Based on the above embodiments, in another embodiment, the upper part of the hatch is provided with two U-shaped hooks 7. A hinge plate 8 is provided on the upper part of the outer vertical section of the U-shaped hook 7 via a hinged structure. The hinge plate 8 is connected to the rear cover 1 or the reinforcing beam via a fixed structure. An edge 9 is fixedly provided on the upper part of the inner vertical section of the U-shaped hook 7, and the edge 9 is bolted to the hatch body. By setting the U-shaped hooks and hinge plates together, the hinge point between the hatch body and the rear cover is located on the upper surface of the hatch body, increasing the hatch area and expanding the operating space for personnel maintenance.

[0022] The working principle and process of this utility model are as follows: When maintenance is required, unlock the lower part of the rear cover, then lift the rear cover 1 to the rear. As the rear cover 1 rotates around the hinge point with the machine body, the rear cover 1 pulls the end rod B63 upward along the guide groove 3 via the connecting rod 61 until the end rod B63 enters the limiting groove 4. At this point, stop lifting the rear cover 1, and the end rod B63 falls outside the protrusion 5. The end rod B63 is blocked by the protrusion 5 to prevent it from entering the guide groove 3, completing the locking after opening.

[0023] When it is necessary to close the rear cover 1, the operator pulls the rear cover 1 upward with the left hand, causing the end rod B63 to move upward, and pushes the connecting rod 61 inward with the right hand, thereby pushing the end rod B63 into the guide groove 3. Then, the rear cover 1 is released. Under the action of gravity, the rear cover 1 rotates around the hinge point with the machine body, and the end rod B63 slides down the guide groove 3 until the lower lock is locked.

[0024] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," 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 limiting the scope of protection 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. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A rear cover opening and locking mechanism for an excavator, characterized in that, include: The fuselage has a hatch, and a rear cover (1) is provided at the hatch. The upper part of the rear cover (1) is connected to the fuselage by a hinge structure. Support plate (2), the support plate (2) is connected to the fuselage on one side of the hatch by a fixed structure; The guide groove (3) and the limiting groove (4) are formed on the support plate (2). The guide groove (3) and the limiting groove (4) are connected. The guide groove (3) is located above the limiting groove (4). The protrusion (5) is located on the lower side of the limiting groove (4) near the guide groove (3), and the protrusion (5) is fixedly connected to the support plate (2); The support rod (6) is connected to the guide groove (3) and the limiting groove (4) in a sliding structure. When the back cover (1) is fully opened, one end of the support rod (6) is located in the limiting groove (4) and is blocked by the protrusion (5). The other end of the strut (6) is connected to the rear cover (1) in a hinged structure.

2. The excavator rear cover opening and locking mechanism according to claim 1, characterized in that: The upper part of the fuselage above the hatch is provided with two U-shaped hooks (7) by means of a fixed structure. The upper part of the vertical section of the outer side of the U-shaped hook (7) is provided with a hinge plate (8) by means of a hinge structure. The hinge plate (8) is connected to the rear cover (1) by means of a fixed structure. The upper part of the vertical section of the inner side of the U-shaped hook (7) is fixedly provided with an edge (9), which is connected to the fuselage by bolts.

3. The excavator rear cover opening and locking mechanism according to claim 1, characterized in that: The limiting groove (4) turns outward relative to the guide groove (3), and the inner wall of the protrusion (5) extends to the outer wall of the guide groove (3) in an arc shape. A vertical section connected to the arc shape is provided on the inner side of the protrusion (5).

4. The excavator rear cover opening and locking mechanism according to claim 1, characterized in that: The strut (6) includes a connecting rod (61), and end rods A (62) and B (63) are fixedly installed at both ends of the connecting rod (61). Both end rods A (62) and B (63) are arranged perpendicular to the connecting rod (61). End rod A (62) is connected to the rear cover (1) by a hinge; The end rod B (63) is connected to the guide groove (3) and the limiting groove (4) in a sliding structure.

5. The excavator rear cover opening and locking mechanism according to claim 4, characterized in that: A hinge seat (10) is fixedly installed on the upper inner side of the rear cover (1), and the hinge seat (10) is hinged to the end rod A (62).

6. The excavator rear cover opening and locking mechanism according to claim 4, characterized in that: The end rod B (63) passes through the guide groove (3) and is fitted with a pin through the support plate (2).

7. The excavator rear cover opening and locking mechanism according to claim 6, characterized in that: A washer (11) is fitted on the outside of the end rod B (63) between the connecting rod (61) and the support plate (2).

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