A removable protective plate for an excavator rotating base

Abstract

This utility model discloses a detachable guard plate for an excavator rotating base, relating to the technical field of excavator guard plates. It includes a lower frame and an upper frame. The lower frame has a bottom shell with two symmetrically symmetrically formed hinge slots at its bottom. Two buffer boxes are symmetrically fixedly connected to the top sides of the hinge slots. A hinge block is movably connected inside each buffer box via a bearing block. A notched guard plate is detachably connected to the center of each hinge block, and the two notched guard plates are joined together to form a disc. This utility model, by incorporating hinge blocks, allows the notched guard plate to be opened by pulling open the connector pin during inspection or maintenance, facilitating internal inspection and maintenance. By bolting the mounting plate to the hinge block, compared to traditional installation methods where the bolts are located at the bottom of the notched guard plate, the problem of bolt deformation due to impact and difficulty in disassembly is avoided.

Description

Technical Field

[0001] This utility model relates to the field of excavator guard plate technology, specifically a detachable guard plate for excavator rotating base. Background Technology

[0002] An excavator is an earthmoving machine that uses a bucket to dig materials and load them into transport vehicles or unload them into a stockpile. The excavator's slewing bearing, also known as the swing bearing, is a key component connecting the excavator's upper and lower frames. The upper frame needs to rotate around this point for operation. However, this area is relatively vulnerable during daily work and contains many hydraulic lines. Typically, a simple protective measure is achieved by adding steel structures to the front and rear ends of the lower frame.

[0003] The excavator frame guard plate structure disclosed in Chinese utility model patent application CN220150421U uses multiple sets of nuts and bolts for connection. Although this utility model can effectively improve the protection of the excavator frame guard plate, the guard plate has many precision connecting devices and hydraulic lines inside. After installation with nuts and bolts, it is not convenient to disassemble and maintain. In addition, existing guard plates are directly installed with bolts, which are prone to deformation after impact. The bolts that install the guard plate at the bottom are also prone to deformation, making disassembly difficult.

[0004] Therefore, it is necessary to propose a removable guard plate for the excavator rotating base to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a detachable protective plate for the rotating base of an excavator, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a lower frame and an upper frame. The bottom of the lower frame is provided with a bottom shell. Two hinge slots are symmetrically opened at the bottom of the bottom shell. Two buffer boxes are symmetrically fixedly connected to the top two sides of the hinge slots. The buffer boxes are movably connected to hinge blocks through bearing blocks. A notch guard plate is detachably connected to the middle of the hinge block. The two notch guard plates are spliced ​​together to form a disc.

[0007] The top of the notch guard plate is fixedly connected to a plug block and a plug box, and the plug box is movably connected to a plug post that connects the plug block and the plug box.

[0008] Optionally, the plug box has a spring groove inside, and a push-out spring connected to the plug post is provided inside the spring groove.

[0009] Optionally, the bottom of the notch guard plate is provided with a push-pull groove that extends into the plug box, the plug post is movably disposed inside the push-pull groove, the side wall of the push-pull groove is provided with two slots, and the side wall of the slots is fixedly provided with a limit plate.

[0010] Optionally, a rotating post that is fixedly connected to the middle of the insertion post and inserted into the slot is fixedly connected to the end of the rotating post, and a toggle block is provided on the toggle block.

[0011] Optionally, a buffer spring is fixedly connected to the inner top wall of the buffer box, the bottom of the buffer spring is fixedly connected to the top of the bearing block, the bearing block is slidably disposed inside the buffer box, and a rubber pad is fixedly connected to the inner bottom wall of the buffer box.

[0012] Optionally, a mounting plate is fixedly connected to the side of the notch guard plate near the hinge groove, and the mounting plate is mounted on the hinge block by mounting bolts.

[0013] This utility model provides a detachable protective plate for the rotating base of an excavator, which has the following advantages:

[0014] 1. The excavator's rotating base uses a removable guard plate. By setting a hinge block, the notch guard plate can be hinged to the bottom of the base shell to form a circular guard plate, which can protect the internal precision connecting devices and hydraulic lines. When inspection or maintenance is required, the notch guard plate can be opened by pulling out the plug, thereby facilitating internal inspection and maintenance.

[0015] 2. The excavator's rotating base uses a removable guard plate. By setting a buffer spring, after the notch guard plate is subjected to an upward impact, the compression of the buffer spring can move the notch guard plate upward, reducing the impact damage to the notch guard plate and achieving the purpose of protecting the notch guard plate.

[0016] 3. The excavator's rotating base uses a removable guard plate. By connecting the mounting plate and the hinge block with bolts, the bolts are located at the bottom of the notch guard plate, which avoids the problem of bolts being deformed by impact and difficult to disassemble, compared to the conventional installation method. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the bottom structure of the notched guard plate of this utility model.

[0019] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0020] Figure 4This is a three-dimensional structural diagram of the plug-in post of this utility model.

[0021] Figure 5 This is a top-view three-dimensional structural diagram of the notch guard plate of this utility model.

[0022] Figure 6 This is a top view cross-sectional structural diagram of the plug-in box of this utility model.

[0023] Figure 7 This is a three-dimensional structural diagram of the buffer box of this utility model.

[0024] Figure 8 This is a schematic diagram of the main structure of the buffer box of this utility model.

[0025] In the diagram: 1. Lower frame; 2. Upper frame; 3. Bottom shell; 4. Notch guard plate; 8. Hinge slot; 9. Hinge block; 10. Push-pull slot; 11. Insertion post; 12. Rotating post; 13. Actuating block; 14. Slot; 15. Limiting plate; 16. Buffer box; 17. Bearing block; 18. Buffer spring; 19. Insertion block; 20. Insertion box; 21. Spring slot; 22. Ejection spring; 23. Mounting plate; 24. Mounting bolt; 25. Rubber pad. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figures 1 to 8 This utility model provides a technical solution: a detachable guard plate for the rotating base of an excavator, including a lower frame 1 and an upper frame 2. The bottom of the lower frame 1 is provided with a bottom shell 3. Two hinge slots 8 are symmetrically opened at the bottom of the bottom shell 3. Two buffer boxes 16 are symmetrically fixedly connected to the top two sides of the hinge slots 8. The interior of the buffer box 16 is movably connected to a hinge block 9 through a bearing block 17. A notched guard plate 4 is detachably connected to the middle of the hinge block 9. The two notched guard plates 4 are spliced ​​together to form a disc.

[0028] The top of the notch guard plate 4 is fixedly connected to the plug block 19 and the plug box 20. The plug box 20 is movably connected to the plug post 11 that connects the plug block 19 and the plug box 20. One end of the plug post 11 that is inserted into the plug block 19 is set as a hemisphere.

[0029] In this embodiment, as Figures 2 to 5As shown, by hinged notch guard plate 4 to the bottom of the bottom shell 3, rotating notch guard plate 4 can splice two notch guard plates 4 into a disc. The plug post 11 is inserted between the plug block 19 and the plug box 20, which can fix the notch guard plate 4, thereby protecting the precision connecting devices and hydraulic lines inside the lower frame 1.

[0030] Specifically, the plug box 20 has a spring groove 21 inside, and the spring groove 21 is provided with an ejector spring 22 connected to the plug post 11. In any state, the ejector spring 22 is in a compressed state and can provide an outward pushing force to the plug post 11.

[0031] Specifically, the bottom of the notch guard plate 4 is provided with a push-pull groove 10 that extends into the plug box 20. The plug post 11 is movably disposed inside the push-pull groove 10. Two slots 14 are provided on the side wall of the push-pull groove 10. A limit plate 15 is fixedly provided on the side wall of the slot 14.

[0032] Specifically, the middle part of the plug-in post 11 is fixedly connected to a rotating post 12 that is inserted into the slot 14, and the end of the rotating post 12 is fixedly connected to a toggle block 13. The toggle block 13 has a threaded hole. Since the plug-in post 11 is always pushed out by the push-out spring 22, the rotating post 12 can be locked in the two slots 14 by using the limiting plate 15.

[0033] In this embodiment, as Figure 3 As shown, by tightening the matching bolt into the threaded hole of the actuating block 13, the plug-in post 11 can be moved, which makes it easy to disengage the rotating post 12 from the slot 14, so that the plug-in post 11 can move in the push-pull slot 10. When opening and closing the notch guard plate 4, the plug-in post 11 can be used as a door bolt, so as to facilitate opening and closing the notch guard plate 4.

[0034] Furthermore, when the notch guard plate 4 is in the closed state, such as Figure 6 As shown, by pressing the insertion post 11 with the push-out spring 22, the rotating post 12 can be prevented from dislodging from the slot 14 due to vibration, and the notch guard plate 4 can be prevented from being opened due to vibration.

[0035] Specifically, a buffer spring 18 is fixedly connected to the inner top wall of the buffer box 16, the bottom of the buffer spring 18 is fixedly connected to the top of the bearing block 17, the bearing block 17 is slidably disposed inside the buffer box 16, and a rubber pad 25 is fixedly connected to the inner bottom wall of the buffer box 16.

[0036] In this embodiment, when the notch guard plate 4 is impacted during the excavator's operation, the notch guard plate 4 is in a closed state. The upward force on the notch guard plate 4 will compress the buffer spring 18, preventing the notch guard plate 4 from deforming. When the notch guard plate 4 falls back, the rubber pad 25 can prevent the bearing block 17 from being impacted.

[0037] Specifically, a mounting plate 23 is fixedly connected to the side of the notch guard plate 4 near the hinge groove 8, and the mounting plate 23 is mounted on the hinge block 9 by mounting bolts 24.

[0038] In this embodiment, a sealing groove is provided on the side where the two notched guard plates 4 meet. The gap between the two notched guard plates 4 is sealed by an embedded sealing strip inside the sealing groove. When the notched guard plate 4 is deformed due to severe impact and needs to be replaced, the notched guard plate 4 can be removed by disassembling the mounting bolt 24. Furthermore, since the mounting bolt 24 is located inside the notched guard plate 4, it can effectively prevent the mounting bolt 24 from being deformed by impact.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A detachable protective plate for a rotating base of an excavator, comprising a lower frame and an upper frame, characterized in that: The bottom of the underframe is provided with a bottom shell, and two hinge slots are symmetrically opened at the bottom of the bottom shell. Two buffer boxes are symmetrically fixedly connected to the top two sides of the hinge slots. The inside of the buffer box is movably connected to a hinge block through a bearing block. A notch guard plate is detachably connected to the middle of the hinge block. The two notch guard plates are spliced ​​together to form a disc. The top of the notch guard plate is fixedly connected to a plug block and a plug box, and the plug box is movably connected to a plug post that connects the plug block and the plug box.

2. The removable protective plate for an excavator rotating base according to claim 1, characterized in that: The plug box has a spring groove inside, and a push-out spring connected to the plug post is installed inside the spring groove.

3. A detachable protective plate for an excavator rotating base according to claim 1, characterized in that: The bottom of the notch guard plate is provided with a push-pull groove that extends into the plug box. The plug post is movably disposed inside the push-pull groove. Two slots are provided on the side wall of the push-pull groove, and a limit plate is fixedly provided on the side wall of the slot.

4. A detachable protective plate for an excavator rotating base according to claim 3, characterized in that: The middle part of the plug is fixedly connected to a rotating column that is inserted into the slot, and the end of the rotating column is fixedly connected to a toggle block, which has a threaded hole.

5. A detachable protective plate for an excavator rotating base according to claim 1, characterized in that: A buffer spring is fixedly connected to the inner top wall of the buffer box, the bottom of the buffer spring is fixedly connected to the top of the bearing block, the bearing block is slidably disposed inside the buffer box, and a rubber pad is fixedly connected to the inner bottom wall of the buffer box.

6. A detachable protective plate for an excavator rotating base according to claim 1, characterized in that: A mounting plate is fixedly connected to the side of the notch guard plate near the hinge groove, and the mounting plate is installed on the hinge block by mounting bolts.

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