Bucket rod with convenient-to-mount structure
By designing an easy-to-install boom structure, the boom and cylinder are quickly assembled using sliding pin grooves and threaded connections, solving the problem of time-consuming and labor-intensive assembly in existing technologies, improving assembly efficiency and stability, and preventing lubricating oil leakage through a sealing structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏国润机械制造有限公司
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-19
AI Technical Summary
When assembling the boom and cylinder, the conventional method requires manually aligning the insertion holes and tapping them, which results in high manpower consumption, high time costs, and potential damage to the boom, affecting the stability of the connection.
The boom is designed with an easy-to-install structure, including components such as shaft holes, assembly side plates, pins, insert rods, and fixing plates. It can be quickly assembled through sliding pin grooves and threaded connections, and is equipped with sealing gaskets and an oil reservoir for convenient lubrication.
It enables rapid and stable assembly of the boom and cylinder, reduces manpower consumption, improves assembly efficiency and connection stability, and prevents lubricant leakage, thus improving ease of use.
Smart Images

Figure CN224259476U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pole technology, specifically relating to a pole with an easy-to-install structure. Background Technology
[0002] The stick is the intermediate component connecting the boom and bucket of an excavator. It typically has a box-shaped structure and is moved via hydraulic cylinders or other drive devices. Its main function is to control the bucket's digging depth, angle, and trajectory. During excavation operations, it works in conjunction with the boom and bucket to complete tasks such as digging, loading, and unloading materials. It can adjust the bucket's position and attitude according to operational needs under different working conditions to improve digging efficiency and operational accuracy.
[0003] The boom is typically made of high-strength low-alloy steel or high-quality carbon structural steel. These materials possess high strength, toughness, and wear resistance, maintaining good performance under heavy loads and resisting deformation and breakage. In large-scale engineering machinery assembly scenarios, the boom, as a key component, needs to be assembled with the cylinder to achieve specific mechanical functions. However, the current conventional boom-cylinder assembly process has significant drawbacks. During assembly, the boom and cylinder are usually assembled using a pin-insertion method. Workers must manually align the pin with the pre-set insertion holes on the boom and cylinder and attempt insertion. Due to the difficulty in achieving a perfect match in the hole machining precision, successful insertion on the first attempt is often impossible. Workers then have to repeatedly tap the boom with tools such as hammers. This continuous tapping not only consumes significant manpower and time, extending the overall assembly cycle, but also generates substantial impact force. This impact force can cause dents, deformation, and other damage to the boom surface, compromising its surface precision, reducing the stability of the boom-cylinder connection, and negatively impacting subsequent equipment operation. Utility Model Content
[0004] The purpose of this invention is to provide a boom with an easy-to-install structure, aiming to solve the significant drawbacks of the conventional boom and cylinder assembly process currently available on the market. In this process, the boom and cylinder are typically assembled using a pin-insertion method. Workers must manually align the pin with the pre-set insertion holes on the boom and cylinder and attempt to insert it. Because it is difficult to achieve a perfect match in the machining precision of the insertion holes, successful insertion on the first attempt is often impossible. Workers then have to repeatedly tap the pin with tools such as hammers. This continuous tapping not only consumes a lot of manpower and time, prolonging the overall assembly cycle, but also generates significant impact force during the tapping process.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a boom with an easy-to-install structure, including a boom body and a shaft hole that passes through and is installed on the side of the boom body, wherein an assembly side plate is connected to the surface of the boom body, and a pin plate is connected to the inner wall of the assembly side plate;
[0006] A pin is connected to the inner wall of the opening of the assembly side plate, a positioning plate is connected to the side of the assembly side plate, an insert rod is connected through the opening on the surface of the positioning plate, a lead screw is connected to the other end of the insert rod, and a fixing plate is connected to the side of the assembly side plate near the lead screw.
[0007] As a preferred embodiment of the present invention with an easy-to-install boom, the surface of the boom near the boom plate is provided with a boom groove, and the boom and the boom plate on the inner side of the assembly side plate form a sliding connection structure.
[0008] As a preferred embodiment of the present invention, the stick with an easy-to-install structure has an insertion hole on the surface of the pin near the insertion rod, and the size of the insertion hole on the surface of the pin is adapted to the size of the surface of the insertion rod.
[0009] As a preferred embodiment of the present invention, the stick with an easy-to-install structure is threadedly connected to the opening on one side of the fixing plate through a slot on the surface of the pin.
[0010] As a preferred embodiment of the present invention, which has an easy-to-install boom, a protective plate is installed on the side of the boom body near the shaft hole, and a silicone sealing gasket is installed on the inner wall of the protective plate.
[0011] As a preferred embodiment of the boom of this utility model with an easy-to-install structure, an oil storage tank is installed at the top of the surface of the protective plate, a threaded rod is threadedly sealed to the top of the oil storage tank, a bearing is connected to the bottom of the threaded rod, a sealing pressure plate is connected to the bottom of the bearing, a sealing ring is installed on the side of the sealing pressure plate, and a through oil filling hole is opened on the surface of the protective plate.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention places the cylinder's mating end inside the assembly side plate, then slides the pin groove on the pin rod surface along the pin plate on the inner wall of the assembly side plate, and then inserts the rod through the opening on the positioning plate surface and the pin groove on the pin rod surface and threadedly connects it to the opening on one side of the fixing plate, thereby facilitating the quick installation of the cylinder on the surface of the boom body and improving the convenience of using the boom body. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0015] Figure 1 This is a schematic diagram of the overall structure of the bucket pole of this utility model;
[0016] Figure 2 This is an exploded view of the pin installation structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the oil storage tank installation structure of this utility model;
[0018] Figure 4 This is an enlarged structural diagram of point A of this utility model.
[0019] In the diagram: 1. Bucket body; 2. Shaft hole; 3. Assembly side plate; 4. Pin plate; 5. Pin rod; 6. Positioning plate; 7. Insert rod; 8. Screw rod; 9. Fixing plate; 10. Protective plate; 11. Sealing gasket; 12. Oil reservoir; 13. Threaded rod; 14. Bearing; 15. Sealing pressure plate; 16. Oil filling hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4 The present invention provides the following technical solution: a boom with an easy-to-install structure, including a boom body 1 and a shaft hole 2 that is installed through the side of the boom body 1, an assembly side plate 3 is connected to the surface of the boom body 1, and a pin plate 4 is connected to the inner wall of the assembly side plate 3.
[0022] A pin 5 is connected to the inner wall of the opening of the assembly side plate 3, a positioning plate 6 is connected to the side of the assembly side plate 3, an insert rod 7 is connected through the opening on the surface of the positioning plate 6, a lead screw 8 is connected to the other end of the insert rod 7, and a fixing plate 9 is connected to the side of the assembly side plate 3 near the lead screw 8.
[0023] Preferably, the pin 5 has a pin groove on its surface near the pin plate 4, and the pin 5 and the pin plate 4 on the inner side of the assembly side plate 3 form a sliding connection structure.
[0024] In practical use, the pin 5 slides along the pin plate 4 through the pin groove on its surface, which facilitates the assembly of the pin 5 with the cylinder's mating end.
[0025] Preferably, the pin 5 has a socket on its surface near the insert 7, and the size of the socket on the surface of the pin 5 is compatible with the size of the surface of the insert 7.
[0026] In practical use, the cylinder is easily assembled by passing the insert rod 7 through the opening on the surface of the pin rod 5.
[0027] Preferably, the insert 7 passes through the slot on the surface of the pin 5 and is threadedly connected to the opening on one side of the fixing plate 9.
[0028] In practical use, the cylinder can be quickly assembled by connecting the lead screw 8 at one end of the insertion rod 7 to the opening on one side of the fixing plate 9.
[0029] Preferably, a protective plate 10 is installed on the side of the stick body 1 near the shaft hole 2, and a silicone sealing gasket 11 is installed on the inner wall of the protective plate 10.
[0030] In practical use, the use of sealing gasket 11 facilitates the sealing of the rotating part of the boom body 1, preventing leakage when adding lubricating oil and improving the effect of lubricating oil addition.
[0031] Preferably, an oil reservoir 12 is installed on the top surface of the protective plate 10, a threaded rod 13 is threadedly sealed to the top of the oil reservoir 12, a bearing 14 is connected to the bottom end of the threaded rod 13, a sealing pressure plate 15 is connected to the bottom surface of the bearing 14, a sealing ring is installed on the side of the sealing pressure plate 15, and a through oil filling hole 16 is opened on the surface of the protective plate 10.
[0032] In practical use, by rotating the threaded rod 13, the sealing pressure plate 15 can be easily moved up and down inside the oil tank 12, thereby facilitating the rapid addition of lubricating oil inside the oil tank 12 and improving the ease of use of the boom body 1.
[0033] The working principle of this utility model in specific use is as follows: First, the docking end of the cylinder is placed inside the assembly side plate 3. Then, the pin groove on the surface of the pin rod 5 is slid along the pin plate 4 on the inner wall of the assembly side plate 3, so that the cylinder is assembled on the top surface of the boom body 1. After the insertion rod 7 passes through the opening on the surface of the positioning plate 6 and the pin groove on the surface of the pin rod 5, it drives the lead screw 8 to be threadedly connected to the opening on one side of the fixing plate 9, thereby facilitating the quick installation of the cylinder on the surface of the boom body 1 and improving the convenience of using the boom body 1; in addition, when the boom body... When there is a lack of oil inside the shaft hole 2 on the side of the boom body 1, the threaded rod 13 on the surface of the oil storage tank 12 is rotated, which in turn drives the threaded rod 13 to rotate along the bearing 14, thereby driving the sealing pressure plate 15 to squeeze inside the oil storage tank 12, which in turn drives the lubricating oil on the inner wall of the oil storage tank 12 to squeeze out. At this time, the lubricating oil seeps out from the oil filling hole 16 on the surface of the protective plate 10 and quickly adds the lubricating oil to the shaft hole 2, which facilitates the quick lubrication of the shaft hole 2 on the side of the boom body 1 and improves the ease of use.
[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A boom with an easy-to-install structure, comprising a boom body (1) and a shaft hole (2) through which the boom body (1) is installed, characterized in that: The surface of the stick body (1) is connected to an assembly side plate (3), and the inner wall of the assembly side plate (3) is connected to a pin plate (4). A pin (5) is connected to the inner wall of the opening of the assembly side plate (3), a positioning plate (6) is connected to the side of the assembly side plate (3), an insert rod (7) is connected through the opening of the surface of the positioning plate (6), a lead screw (8) is connected to the other end of the insert rod (7), and a fixing plate (9) is connected to the side of the assembly side plate (3) near the lead screw (8).
2. The boom pole with an easy-to-install structure according to claim 1, characterized in that: The pin (5) has a pin groove on its surface near the pin plate (4), and the pin (5) and the pin plate (4) on the inner side of the assembly side plate (3) form a sliding connection structure.
3. The boom with an easy-to-install structure according to claim 1, characterized in that: The pin (5) has a socket on its surface near the insert (7), and the size of the socket on the surface of the pin (5) is compatible with the size of the surface of the insert (7).
4. The boom with an easy-to-install structure according to claim 1, characterized in that: The insert (7) passes through the slot on the surface of the pin (5) and is threaded to the opening on one side of the fixing plate (9).
5. The boom with an easy-to-install structure according to claim 1, characterized in that: A protective plate (10) is installed on the side of the stick body (1) near the shaft hole (2), and a silicone sealing gasket (11) is installed on the inner wall of the protective plate (10).
6. The boom with an easy-to-install structure according to claim 5, characterized in that: An oil reservoir (12) is installed on the top surface of the protective plate (10). A threaded rod (13) is threadedly sealed to the top of the oil reservoir (12). A bearing (14) is connected to the bottom end of the threaded rod (13). A sealing pressure plate (15) is connected to the bottom surface of the bearing (14). A sealing ring is installed on the side of the sealing pressure plate (15). A through oil filling hole (16) is opened on the surface of the protective plate (10).