Convenient maintenance structure for multi-way valve of excavator and tailless excavator
By incorporating a receiving groove and a movable baffle structure into the excavator cab floor, the maintenance process of the multi-way valve is simplified, solving the cumbersome maintenance problems in the existing technology and improving maintenance efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN SOUTH CHINA HEAVY IND MASCH MFG CO LTD
- Filing Date
- 2025-02-28
- Publication Date
- 2026-05-08
AI Technical Summary
The maintenance process for existing excavator multi-way valves is cumbersome, time-consuming, and labor-intensive, requiring the entire cab to be lifted for operation, resulting in uneconomical and inefficient maintenance.
A receiving slot is installed on the excavator cab floor, and a movable cover plate and removable bolts are installed to cover the opening of the receiving slot, allowing the seat to move back and forth, simplifying the maintenance process of the multi-way valve.
This has made multi-way valve maintenance more convenient and safer, improved maintenance efficiency, and reduced labor intensity and equipment requirements.
Smart Images

Figure CN224213420U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of excavator technology, and in particular to a convenient maintenance structure for a multi-way valve in an excavator and a tailless excavator. Background Technology
[0002] The multi-way valve, a key component of excavators, plays a crucial role. It controls various excavator actions, including digging, rotating, and lifting. The precise execution of these actions depends on the accurate adjustment of the multi-way valve. Typically, the multi-way valve is installed at the bottom of the excavator's cab, a location that is both convenient and relatively concealed. However, when the multi-way valve malfunctions and requires repair, specific measures must be taken. This usually involves lifting the entire cab to access the valve for inspection and repair. While this method ensures sufficient space for operation, it is relatively cumbersome, time-consuming, and labor-intensive. For routine maintenance, this approach is not economical or efficient because it requires specialized equipment and additional time. Utility Model Content
[0003] The purpose of this utility model is to solve the above-mentioned problems by providing a convenient maintenance structure for a multi-way valve of an excavator and a tailless excavator.
[0004] The technical solution of this application is implemented as follows:
[0005] In a first aspect, this application provides a convenient maintenance structure for a multi-way valve of an excavator. The maintenance structure is located on the floor of the excavator's cab, and the cab has a receiving groove for accommodating the multi-way valve. The upper opening of the receiving groove is located on the floor of the cab.
[0006] The maintenance structure includes:
[0007] A shield, movably mounted on the cab floor, such that the shield covers or opens the top opening of the receiving slot;
[0008] Bolts are detachably mounted on the cover plate, the bolts being used to secure the cover plate to the bottom of the cab to cover the top opening of the receiving slot;
[0009] The driver's seat is movable forward and backward along the axis of the excavator.
[0010] Secondly, this application also provides a tailless excavator, which is equipped with a convenient maintenance structure for the excavator multi-way valve as described above.
[0011] The advantages or beneficial effects of the above technical solutions include at least the following:
[0012] A removable cover plate is used to cover and seal the receiving slot opening above the multi-way valve, thus facilitating the maintenance of the excavator's multi-way valve. This innovative design allows workers to more easily access the internal structure of the multi-way valve during maintenance operations, thereby improving maintenance efficiency and operational safety. Attached Figure Description
[0013] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.
[0014] Figure 1 This diagram shows the location of the maintenance structure of this utility model on an excavator according to an embodiment of the present invention;
[0015] Figure 2 This diagram shows the position of the bolt in the first embodiment of the present invention;
[0016] Figure 3 This diagram shows the process of removing the baffle plate according to the first embodiment of the present invention.
[0017] Figure 4 A schematic diagram showing the forward and backward movement of the seat according to an embodiment of the present invention is shown;
[0018] Figure 5 A first schematic diagram showing the movement of the baffle plate under the second embodiment of the present invention is shown;
[0019] Figure 6 This shows a second schematic diagram of the movement of the baffle plate according to the second embodiment of the present invention;
[0020] Figure 7 A third schematic diagram showing the movement of the baffle plate according to the second embodiment of the present invention is shown;
[0021] Figure 8 A schematic diagram is shown below of the second embodiment of the present invention, showing how the baffle plate moves the seat back and forth via a sliding member.
[0022] Figure 9 A schematic diagram showing the position of the sliding groove according to an embodiment of the present invention is shown;
[0023] Figure 10 A schematic diagram showing the position of the spring seat according to an embodiment of the present invention is provided.
[0024] Figure 11 A schematic diagram showing the position of the adapter slider according to an embodiment of the present invention is shown;
[0025] Reference numerals: 10, excavator; 11, cab; 111, receiving groove; 112, sliding groove; 12, baffle plate; 121, spring seat; 1211, fixed end; 1212, elastic telescopic end; 13, bolt; 14, seat; 141, adapter sliding component; 1411, fixed section; 1412, sliding section; 142, slide rail. Detailed Implementation
[0026] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.
[0027] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0029] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0030] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.
[0031] Reference Figure 1 A convenient maintenance structure for a multi-way valve of an excavator is provided. The maintenance structure is located on the floor of the cab 11 of the excavator 10. The cab 11 has a receiving groove 111 for accommodating the multi-way valve. The upper opening of the receiving groove 111 is opened on the floor of the cab 11, and the operator can perform maintenance on the multi-way valve through the upper opening.
[0032] Furthermore, the maintenance structure includes:
[0033] The cover plate 12 is movably installed on the floor of the cab 11 so that the cover plate 12 covers the top opening of the receiving groove 111. When no maintenance is required, the cover plate is covered to prevent the multi-way valve from being exposed, or the top opening of the receiving groove 111 is left open to facilitate the maintenance of the multi-way valve.
[0034] Bolt 13 is detachably mounted on the cover plate 12. Bolt 13 is used to fix the cover plate 12 to the bottom of the cab 11 to cover the top opening of the receiving slot 111. When the multi-way valve does not need to be maintained, the cover plate 12 is fixed to the top opening of the receiving slot by bolt 13. When the multi-way valve needs to be maintained, the cover plate 12 is loosened from the top opening of the receiving slot by bolt 13 so that the user can remove the cover plate 12.
[0035] Furthermore, the seat 14 in the cab 11 can move back and forth along the axis of the excavator 10. When maintenance of the multi-way valve is required, the seat 14 can be moved backward, such as... Figure 4 As shown, to avoid obstruction of maintenance by seat 14, and to allow seat 14 to be moved forward and returned to its original position after maintenance, a sliding groove 112 is provided on the floor of the cab 11, and a slide rail 142 is installed at the bottom of seat 14. The slide rail 142 is slidably embedded in the sliding groove 112, thereby limiting the fore-and-aft movement distance of seat 14. Figure 9 As shown.
[0036] The cover 12 of this application has different modes of movement. In the first embodiment, the cover 12 is detachably installed on the floor of the cab 11, and the cover 12 can be directly removed upwards from the top opening of the storage slot, such as... Figure 3 As shown, before repairing the multi-way valve, remove the cover plate 12 and then move the seat 14 backward.
[0037] Based on the further improvement of the above structure, several spring seats 121 are installed at the bottom of the cover plate 12. The fixed end 1211 of the spring seat 121 is installed at the bottom of the cover plate 12, and the elastic telescopic end 1212 abuts against the inner wall of the receiving groove 111. When the cover plate 12 is fixed at the top opening of the receiving groove, the telescopic end of the spring seat 121 retracts. When the user removes the bolt 13, the telescopic end of the spring seat 121 extends, pushing the cover plate 12 upward, so that a gap is created between the bottom of the cover plate 12 and the top opening of the receiving groove, making it easier for the user to remove the cover plate 12.
[0038] In the second embodiment, the shield 12 is slidably mounted on the floor of the cab 11, such as... Figures 5 to 6As shown, after removing bolt 13, the maintenance personnel can slide the cover 12 towards the seat 14, concealing the cover 12 within the inner wall of the cab 11. Furthermore, a transition slider 141 is fixedly installed at the bottom of the seat 14. The transition slider 141 includes a fixed section 1411 and a sliding section 1412. The fixed section 1411 and the sliding section 1412 have a vertical surface and are perpendicular to each other. The telescopic end is slidably embedded in the cover 12. When the maintenance personnel push the cover 12 towards the seat 14, the cover 12 moves on the sliding section 1412. When it touches the vertical surface, the maintenance personnel continue to push the cover 12, thus pushing the seat 14 via the transition slider 141. Figures 5 to 7 As shown, compared with the first embodiment, the second embodiment has a more convenient way of moving the baffle 12. No additional adjustment of the seat 14 is required; the baffle 12 can be moved directly.
[0039] After the maintenance is completed, the maintenance personnel pull out the cover 12. Since the cover 12 has a limited sliding distance on the sliding section 1412, after the cover 12 reaches its limit on the sliding section 1412, the cover 12 can be used to pull the seat 14 forward via the adapter slider 141 until the cover 12 completely covers the upper opening of the storage slot. Figure 8 As shown.
[0040] An embodiment of this utility model also provides a tailless excavator, which is equipped with a convenient maintenance structure for the excavator with a 10-way valve as described above.
[0041] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.
[0042] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.
Claims
1. A convenient maintenance structure for a multi-way valve in an excavator, characterized in that: The maintenance structure is located on the floor of the cab (11) of the excavator (10), and the cab (11) has a receiving slot (111) for accommodating a multi-way valve, the upper opening of the receiving slot (111) being opened on the floor of the cab (11). The maintenance structure includes: A shield (12) is movably mounted on the floor of the cab (11) to cover or open the top opening of the receiving slot (111); Bolts (13) are detachably mounted on the cover plate (12) for securing the cover plate (12) to the bottom of the cab (11) to cover the top opening of the receiving slot (111); The seat (14) of the cab (11) can move back and forth along the axis of the excavator (10).
2. The convenient maintenance structure for the excavator multi-way valve according to claim 1, characterized in that: The shield (12) is detachably mounted on the floor of the cab (11).
3. The convenient maintenance structure for the excavator multi-way valve according to claim 2, characterized in that: The bottom of the baffle (12) is equipped with several spring seats (121), the fixed end (1211) of the spring seat (121) is installed at the bottom of the baffle (12), and the elastic telescopic end (1212) abuts against the inner wall of the receiving groove (111).
4. The convenient maintenance structure for the excavator multi-way valve according to claim 3, characterized in that: The shield (12) is slidably mounted on the floor of the cab (11).
5. The convenient maintenance structure of the excavator multi-way valve according to claim 4, characterized in that: A transition sliding component (141) is fixedly installed at the bottom of the seat (14). The adapter slide (141) includes a fixed section (1411) and a sliding section (1412), and the elastic telescopic end (1212) is slidably embedded in the baffle plate (12).
6. The convenient maintenance structure for the excavator multi-way valve according to claim 5, characterized in that: The floor of the driver's cab (11) is provided with a sliding groove (112), and the bottom of the seat (14) is provided with a slide rail (142), which is slidably embedded in the sliding groove (112).
7. A tailless excavator, characterized in that: The tailless excavator is equipped with a convenient maintenance structure for the excavator multi-way valve as described in any one of claims 1-6.