Hydraulic telescopic structure of movable arm of loading machine
By employing an adjustable curved screen hydraulic telescopic structure and a high-precision control system on the loader boom, the problems of instability and high energy consumption during the telescopic process of traditional loader booms have been solved, achieving higher stability and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional hydraulic telescopic structures for loader booms suffer from instability and high energy consumption during the telescopic process, making them unsuitable for different operating environments.
The system employs a curved screen with adjustable degrees of freedom hydraulic telescopic structure, and uses a combination of multiple pulley seats and wire ropes as a guide device, along with high-precision pressure sensors and control valves, to achieve precise control of the hydraulic system.
It improves the stability and operating accuracy of the boom, reduces energy consumption and maintenance costs, and extends the service life of the equipment.
Smart Images
Figure CN224092604U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to the field of hydraulic telescopic structure technology, and more specifically to a hydraulic telescopic structure for loading a motor boom. Background Technology
[0002] In the field of construction machinery, loaders are key equipment for material handling, and the performance of their booms directly affects operational efficiency and stability. With the booming development of industries such as construction engineering and mining, higher demands are being placed on the working capacity and adaptability of loaders. As a result, the hydraulic telescopic structure of loader booms has been continuously evolving, but it still faces many challenges.
[0003] Traditional loaders mostly use fixed-length booms, a structure that reveals significant shortcomings when facing diverse working scenarios. In confined indoor spaces, such as warehouses or underground parking lots, fixed-length booms struggle to flexibly adjust their working range, potentially failing to reach materials in specific locations and resulting in low operational efficiency. Furthermore, in vast operating areas like large open-pit mines, the limited reach of fixed-length booms cannot meet the demands of long-distance material loading and unloading, forcing the loader to frequently move, increasing fuel consumption and reducing overall work efficiency.
[0004] To overcome the limitations of fixed-length booms, early loader booms featured hydraulic telescopic structures. However, these early structures suffered from poor stability. Due to imperfect hydraulic cylinder arrangement and guide system design, the boom was prone to swaying and shaking during extension and retraction. This instability became more pronounced when loading heavy materials, affecting not only the accuracy of loading and unloading but also potentially causing premature damage to boom components due to uneven stress, thus shortening the equipment's lifespan.
[0005] Furthermore, early hydraulic telescopic boom structures had high energy consumption in their hydraulic systems. Inappropriate selection and system matching of the hydraulic pump resulted in the hydraulic oil flow and pressure not being precisely adjusted according to actual operational needs during boom extension and retraction, leading to significant energy waste during overflow and throttling processes. This not only increased the loader's operating costs but also negatively impacted the reliability and stability of the hydraulic system due to excessive heat generation. Summary of the Invention
[0006] The purpose of this utility model is to provide a hydraulic telescopic structure for loading a motorized boom, which installs a curved screen through two support arms. The degree of freedom of the curved screen is adjustable, the structure is simple, and the installation is convenient; thus solving the technical problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A hydraulic telescopic structure for loading a mobile boom, comprising:
[0009] A fixed arm mechanism, on which a telescopic mechanism is installed;
[0010] The fixed arm mechanism includes a mounting base, on the upper surface of which fixed frames are symmetrically arranged. A cylinder connecting shaft and a fixed arm connecting shaft are respectively arranged between the fixed frames. A telescopic cylinder is mounted on the cylinder connecting shaft. The fixed arm connecting shaft is connected to the fixed arm. The other end of the telescopic cylinder is rotatably connected to the fixed arm.
[0011] As a further technical solution of this utility model, a fixed arm cylinder mounting seat is installed on one end of the upper surface of the fixed arm, a lifting cylinder is connected to the fixed arm cylinder mounting seat, a control valve and a pressure sensor are installed on the lifting cylinder, and the other end of the lifting cylinder is connected to the pulley seat of the secondary arm cylinder.
[0012] As a further technical solution of this utility model, a fixed arm wire rope fixing plate is installed on the other end of the upper surface of the fixed arm, a first wire rope is connected to the fixed arm wire rope fixing plate, and a fixed arm guide block is provided on the inner side of the fixed arm, and a second wire rope is connected to the fixed arm guide block.
[0013] As a further technical solution of this utility model, the first wire rope is slidably connected to the pulley seat of the second-stage boom cylinder, and the other end is connected to the guide block of the third-stage boom, which is located on the upper surface of the third-stage boom; the pulley seat of the second-stage boom cylinder is located on the upper surface of the second-stage boom, and the upper surface of the other end of the second-stage boom is provided with a pulley seat for the inner cavity of the second-stage boom, which is slidably connected to the second wire rope, and the other end of the second wire rope is connected to the wire rope fixing plate of the third-stage boom; the lower surface of the second-stage boom is provided with a wire rope fixing plate, and the inner side of the lower surface is provided with a guide block for the second-stage boom, on which a fourth wire rope is connected, which is slidably connected to the pulley seat for the inner cavity of the third-stage boom, and the other end is connected to the wire rope fixing plate of the fourth-stage boom.
[0014] As a further technical solution of this utility model, a third wire rope is connected to the wire rope fixing plate of the second-stage arm. The third wire rope is slidably connected to the pulley seat of the third-stage arm, and the other end is connected to the guide block of the fourth-stage arm. The guide block of the fourth-stage arm is located on the lower surface of the fourth-stage arm.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] In use, the device is first installed on the loader via the mounting base. The upper end of the mounting base is equipped with a telescopic cylinder. Adjusting the telescopic cylinder can change the angle between the fixed arm and the mounting base. The lifting cylinder is installed on the upper surface of the fixed arm to extend and retract the telescopic mechanism, making the entire hydraulic telescopic structure more compact and occupying less space. This improves the overall layout rationality and maneuverability of the loader, enabling it to better adapt to different working environments.
[0017] In this invention, when the telescopic mechanism extends or retracts, the lifting cylinder first pushes the pulley seat of the secondary boom cylinder. The pulley seat of the secondary boom cylinder slides with the first wire rope, causing the guide block of the tertiary boom connected to the other end of the first wire rope to slide. At the same time, the guide block of the tertiary boom at the bottom of the secondary boom drives the pulley seat of the tertiary boom to slide through the fourth wire rope. When the tertiary boom slides outward, the pulley seat of the tertiary boom at the bottom of the tertiary boom slides with the third wire rope. The other end of the third wire rope is connected to the guide block of the quaternary boom. The inner side of the quaternary boom is also provided with a quaternary boom wire rope fixing plate, and the fourth wire rope is connected to the quaternary boom wire rope fixing plate. The quaternary boom slides accordingly, completing the extension and retraction of the telescopic mechanism. The extension and retraction length of the telescopic mechanism is controlled by adjusting the extension and retraction length of the lifting cylinder. Through the combined guiding device of multiple pulley seats and wire ropes, the swaying and shaking of the telescopic mechanism during the extension and retraction process is effectively limited, improving the stability and working accuracy of the boom, reducing damage to the boom structure, and extending its service life.
[0018] In this invention, a control valve and a pressure sensor are installed on the lifting cylinder during installation. The high-precision pressure sensor and control valve enable precise control of the pressure and flow of the lifting cylinder, thereby improving the telescopic performance and working efficiency of the telescopic mechanism and reducing energy consumption and maintenance costs. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0020] Figure 2 This utility model Figure 1 Top view.
[0021] Figure 3 This utility model Figure 2 A bottom view.
[0022] Figure 4 This utility model Figure 2 A schematic diagram of the split structure.
[0023] Figure 5 This utility model Figure 4 A bottom view.
[0024] Figure 6 This utility model Figure 4 Front view.
[0025] Figure 7 This utility model Figure 6 A magnified schematic diagram of part A.
[0026] Figure 8 This utility model Figure 6 A magnified view of part B.
[0027] In the diagram: 1-Fixed arm mechanism, 2-Telescopic mechanism;
[0028] 11-Mounting base, 12-Fixed bracket, 13-Cylinder connecting shaft, 14-Fixed arm connecting shaft, 15-Telescopic cylinder, 16-Fixed arm, 17-Fixed arm cylinder mounting base, 18-Lifting cylinder, 19-Control valve, 110-Pressure sensor, 111-Fixed arm wire rope fixing plate, 112-Fixed arm guide block, 113-Wire rope one, 114-Wire rope two;
[0029] 21-Secondary boom cylinder pulley seat, 22-Secondary boom, 23-Secondary boom inner cavity pulley seat, 24-Secondary boom wire rope fixing plate, 25-Wire rope three, 26-Third boom pulley seat, 27-Third boom wire rope fixing plate, 28-Third boom guide block, 29-Third boom, 210-Third boom inner cavity pulley seat, 211-Fourth boom wire rope fixing plate, 212-Fourth boom, 213-Secondary boom guide block, 214-Wire rope four, 215-Fourth boom guide block. Detailed Implementation
[0030] 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.
[0031] Please see Figure 1-8 In this embodiment of the utility model, a hydraulic telescopic structure for loading a motorized boom includes a fixed boom mechanism 1, on which a telescopic mechanism 2 is installed.
[0032] The fixed arm mechanism 1 includes a mounting base 11, on the upper surface of which fixed frames 12 are symmetrically arranged. A cylinder connecting shaft 13 and a fixed arm connecting shaft 14 are respectively arranged between the fixed frames 12. A telescopic cylinder 15 is mounted on the cylinder connecting shaft 13. The fixed arm connecting shaft 14 is connected to the fixed arm 16. The other end of the telescopic cylinder 15 is rotatably connected to the fixed arm 16.
[0033] By adopting the above technical solution, when in use, the equipment is first installed on the loader through the mounting base 11. The upper end of the mounting base 11 is provided with a telescopic cylinder 15. Adjusting the telescopic cylinder 15 can change the angle between the fixed arm 16 and the mounting base 11. The lifting cylinder 18 is installed on the upper surface of the fixed arm 16 to extend and retract the telescopic mechanism 2, making the entire hydraulic telescopic structure more compact and occupying less space. This improves the overall layout rationality and maneuverability of the loader, enabling it to better adapt to different working environments.
[0034] In this embodiment, a fixed arm cylinder mounting seat 17 is installed on one end of the upper surface of the fixed arm 16. A lifting cylinder 18 is connected to the fixed arm cylinder mounting seat 17. A control valve 19 and a pressure sensor 110 are installed on the lifting cylinder 18. The other end of the lifting cylinder 18 is connected to the secondary arm cylinder pulley seat 21.
[0035] By adopting the above technical solution, during installation, a control valve 19 and a pressure sensor 110 are installed on the lifting cylinder 18. The high-precision pressure sensor 110 and control valve 19 enable precise control of the pressure and flow of the lifting cylinder 18, thereby improving the telescopic performance and working efficiency of the telescopic mechanism and reducing energy consumption and maintenance costs.
[0036] In this embodiment, a fixed arm wire rope fixing plate 111 is installed on the other end of the upper surface of the fixed arm 16. A first wire rope 113 is connected to the fixed arm wire rope fixing plate 111, and a fixed arm guide block 112 is provided on the inner side of the fixed arm 16. A second wire rope 114 is connected to the fixed arm guide block 112.
[0037] The first wire rope 113 is slidably connected to the pulley seat 21 of the second-stage boom cylinder, and the other end is connected to the guide block 28 of the third-stage boom. The guide block 28 of the third-stage boom is located on the upper surface of the third-stage boom 29. The pulley seat 21 of the second-stage boom cylinder is located on the upper surface of the second-stage boom 22. The upper surface of the other end of the second-stage boom 22 is provided with a pulley seat 23 of the second-stage boom inner cavity. The pulley seat 23 of the second-stage boom inner cavity is slidably connected to the second wire rope 114. The other end of the second wire rope 114 is connected to the wire rope fixing plate 27 of the third-stage boom. The lower surface of the second-stage boom 22 is provided with a wire rope fixing plate 24 of the second-stage boom, and the inner side of the lower surface is provided with a guide block 213 of the second-stage boom. The guide block 213 of the second-stage boom is connected to the fourth wire rope 214. The fourth wire rope 214 is slidably connected to the pulley seat 210 of the third-stage boom, and the other end is connected to the wire rope fixing plate 211 of the fourth-stage boom.
[0038] The secondary arm wire rope fixing plate 24 is connected to a third wire rope 25, which is slidably connected to the third arm pulley seat 26, and the other end is connected to the fourth arm guide block 215, which is located on the lower surface of the fourth arm 212.
[0039] By adopting the above technical solution, when the telescopic mechanism 2 extends or retracts, the lifting cylinder 18 first pushes the secondary arm cylinder pulley seat 21. The secondary arm cylinder pulley seat 21 slides with the wire rope 113, causing the tertiary arm guide block 28 connected to the other end of the wire rope 113 to slide. At the same time, the secondary arm guide block 213 at the bottom of the secondary arm 22 drives the tertiary arm inner cavity pulley seat 210 to slide through the wire rope 414. When the tertiary arm 29 slides outward, the tertiary arm pulley seat 26 at the bottom of the tertiary arm 29 slides with the wire rope 325 through the tertiary arm pulley seat 26. The wire rope 325... The other end is connected to the fourth-stage boom guide block 215. The inner side of the fourth-stage boom 212 is also provided with a fourth-stage boom wire rope fixing plate 211. A wire rope 214 is connected to the fourth-stage boom wire rope fixing plate 211. The fourth-stage boom 212 slides accordingly to complete the extension and retraction of the telescopic mechanism 2. The extension and retraction length of the telescopic mechanism 2 is controlled by adjusting the extension and retraction length of the lifting cylinder 18. Through the combination of multiple sets of pulley seats and wire ropes, the shaking and vibration of the telescopic mechanism 2 during the extension and retraction process are effectively limited, which improves the stability and working accuracy of the boom, reduces damage to the boom structure, and extends its service life.
[0040] The working principle of this utility model is as follows: When in use, the equipment is first installed on the loader through the mounting base 11. The upper end of the mounting base 11 is provided with a telescopic cylinder 15. Adjusting the telescopic cylinder 15 can change the angle between the fixed arm 16 and the mounting base 11. The lifting cylinder 18 is installed on the upper surface of the fixed arm 16 to extend and retract the telescopic mechanism 2, making the entire hydraulic telescopic structure more compact and occupying less space. This improves the overall layout rationality and maneuverability of the loader, enabling it to better adapt to different working environments.
[0041] When the telescopic mechanism 2 extends or retracts, the lifting cylinder 18 first pushes the secondary arm cylinder pulley seat 21. The secondary arm cylinder pulley seat 21 slides with the wire rope 113, causing the tertiary arm guide block 28, which is connected to the other end of the wire rope 113, to slide. At the same time, the secondary arm guide block 213 at the bottom of the secondary arm 22 drives the tertiary arm inner cavity pulley seat 210 to slide through the wire rope 414. When the tertiary arm 29 slides outward, the tertiary arm pulley seat 26 at the bottom of the tertiary arm 29 slides with the wire rope 325 through the tertiary arm pulley seat 26. The other end of the wire rope 325 is connected to the wire rope 414. The boom guide block 215 is connected, and the inner side of the fourth boom 212 is also provided with a fourth boom wire rope fixing plate 211. The fourth boom wire rope fixing plate 211 is connected with a wire rope 214. The fourth boom 212 slides accordingly to complete the extension and retraction of the telescopic mechanism 2. The extension and retraction length of the telescopic mechanism 2 is controlled by adjusting the extension and retraction length of the lifting cylinder 18. Through the combination of multiple sets of pulley seats and wire ropes, the shaking and vibration of the telescopic mechanism 2 during the extension and retraction process are effectively limited, improving the stability and working accuracy of the boom, reducing damage to the boom structure, and extending its service life.
[0042] During installation, a control valve 19 and a pressure sensor 110 are installed on the lifting cylinder 18. The high-precision pressure sensor 110 and control valve 19 enable precise control of the pressure and flow of the lifting cylinder 18, which improves the telescopic performance and working efficiency of the telescopic mechanism and reduces energy consumption and maintenance costs.
[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A hydraulic telescopic structure for loading a mobile boom, characterized in that: include Fixed arm mechanism (1), on which telescopic mechanism (2) is installed; The fixed arm mechanism (1) includes a mounting base (11), on which fixed frames (12) are symmetrically arranged on the upper surface. A cylinder connecting shaft (13) and a fixed arm connecting shaft (14) are respectively arranged between the fixed frames (12). A telescopic cylinder (15) is installed on the cylinder connecting shaft (13). The fixed arm connecting shaft (14) is connected to the fixed arm (16). The other end of the telescopic cylinder (15) is rotatably connected to the fixed arm (16).
2. The hydraulic telescopic structure of the loading boom according to claim 1, characterized in that: The fixed arm (16) has a fixed arm cylinder mounting seat (17) installed on one end of its upper surface. A lifting cylinder (18) is connected to the fixed arm cylinder mounting seat (17). A control valve (19) and a pressure sensor (110) are installed on the lifting cylinder (18). The other end of the lifting cylinder (18) is connected to the secondary arm cylinder pulley seat (21).
3. The hydraulic telescopic structure of the loading boom according to claim 2, characterized in that: A wire rope fixing plate (111) is installed on the other end of the upper surface of the fixed arm (16). A first wire rope (113) is connected to the wire rope fixing plate (111), and a fixed arm guide block (112) is provided on the inner side of the fixed arm (16). A second wire rope (114) is connected to the fixed arm guide block (112).
4. The hydraulic telescopic structure of the loading boom according to claim 3, characterized in that: The first wire rope (113) is slidably connected to the pulley seat (21) of the second-stage boom cylinder, and the other end is connected to the guide block (28) of the third-stage boom. The guide block (28) of the third-stage boom is located on the upper surface of the third-stage boom (29). The pulley seat (21) of the second-stage boom cylinder is located on the upper surface of the second-stage boom (22). The upper surface of the other end of the second-stage boom (22) is provided with a pulley seat (23) of the inner cavity of the second-stage boom. The pulley seat (23) of the inner cavity of the second-stage boom is slidably connected to the second wire rope (114). The other end of the second wire rope (114) is connected to the third-level arm wire rope fixing plate (27); the lower surface of the second-level arm (22) is provided with a second-level arm wire rope fixing plate (24), and the inner side of the lower surface is provided with a second-level arm guide block (213). The second-level arm guide block (213) is connected to the fourth wire rope (214), and the fourth wire rope (214) is slidably connected to the pulley seat (210) of the third-level arm cavity, and the other end is connected to the fourth-level arm wire rope fixing plate (211).
5. The hydraulic telescopic structure of the loading boom according to claim 4, characterized in that: The secondary arm wire rope fixing plate (24) is connected to the third wire rope (25), which is slidably connected to the third arm pulley seat (26), and the other end is connected to the fourth arm guide block (215). The fourth arm guide block (215) is located on the lower surface of the fourth arm (212).