A telescopic boom for an electric loader
By improving the boom structure and component design, the swaying problem of the telescopic boom of the electric loader under heavy load has been solved, and the stability and safety of the boom have been improved, meeting the stable operation requirements under heavy load conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGZHOU YINGNUO HEAVY IND MASCH CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-14
AI Technical Summary
The telescopic boom of existing electric loaders is prone to relative swaying of the inner and outer booms when retracting under heavy load due to concentrated force and small guide contact area. This leads to increased additional load on the hydraulic cylinder, accelerated wear of seals, reduced operating accuracy, and safety hazards.
The system employs a combination of support arm one, support arm two, telescopic assembly, limiting assembly, and fixing assembly to increase the contact area and distribute the stress points. Combined with the guiding effect of the slider and the slide groove, multiple sets of insertion holes enable flexible adjustment and secure fixing of the support arm length.
It effectively solves the shaking problem of traditional single-cylinder drive, reduces the wear of cylinder seals, improves the safety and accuracy of heavy-duty operations, and adapts to the length requirements of different operating scenarios.
Smart Images
Figure CN224495242U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric loader technology, specifically to a telescopic outrigger for an electric loader. Background Technology
[0002] The telescopic outrigger of an electric loader is a core working component of an electric loader (an engineering machinery device powered by electricity, used for loading, unloading, and transporting bulk materials such as sand, gravel, coal, and garbage). Its key feature is that the length of the outrigger can be adjusted by mechanical or hydraulic mechanisms, thereby flexibly adapting to the needs of different operating scenarios and improving the equipment's operating range and flexibility. The telescopic outrigger of an electric loader is the core component for realizing material loading, unloading, and transport, and its length is adjusted by the relative sliding of the inner and outer arms.
[0003] Existing telescopic booms mostly use a single hydraulic cylinder drive, with the inner and outer booms guided only by a slider. During heavy-load telescopic extension, due to the concentrated force and small guide contact area, the inner and outer booms are prone to relative swaying. This swaying not only increases the additional load on the hydraulic cylinder, leading to accelerated wear of the seals, but also affects the working accuracy and may even cause safety hazards when lifted. It cannot meet the stable operation requirements under heavy-load conditions. Therefore, a telescopic boom for electric loaders is needed to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a telescopic boom for an electric loader, which solves the problem that existing telescopic booms mostly use a single set of hydraulic cylinders for driving, and the inner and outer booms are only guided by a slider. When telescopically extending under heavy load, due to the concentrated force and small guide contact area, the inner and outer booms are prone to relative swaying. This swaying not only increases the extra load on the hydraulic cylinder, leading to accelerated wear of the seals, but also affects the working accuracy, and may even cause safety hazards in the lifting state, failing to meet the stable operation requirements under heavy load conditions.
[0005] This utility model provides the following technical solution: a telescopic boom for an electric loader, comprising a base, a plurality of movable wheels fixedly installed at the bottom end of the base, an organism fixedly installed at the top end of the base, a support rod fixedly installed at the top end of the base, a first support arm hinged to the top end of the support rod, a cylinder hinged between the side end of the support rod and the bottom end of the first support arm, a second support arm inserted inside the first support arm, a hook fixedly installed at the side end of the second support arm, a telescopic component provided between the top end of the first support arm and the top end of the second support arm, a limiting component fixedly provided between the side end of the first support arm and the side end of the second support arm, and a fixing component provided at the bottom end of the limiting component.
[0006] As a preferred embodiment of the above technical solution, the telescopic assembly includes a first upright plate and a second upright plate. The first upright plate is fixedly installed at the top of the first support arm, and the second upright plate is fixedly connected to the top of the second support arm. A cylinder is fixedly installed between the first upright plate and the second upright plate.
[0007] As a preferred embodiment of the above technical solution, the first support arm has a sliding groove inside, and the second support arm has a slider fixedly connected to its side end, the slider being slidably connected within the sliding groove.
[0008] As a preferred embodiment of the above technical solution, the bottom end of the first support arm is provided with a plurality of insertion holes spaced apart.
[0009] As a preferred embodiment of the above technical solution, the limiting component includes two side plates, which are respectively fixedly connected to the left and right sides of the second support arm. Each side plate is fixedly connected to a limiting rod at its side end. Each side of the first support arm is fixedly connected to a sleeve plate. Each limiting rod is inserted into each sleeve plate. A connecting plate is fixedly connected between the side ends of the two limiting rods.
[0010] As a preferred embodiment of the above technical solution, the connecting plate is U-shaped, and a protruding plate is fixedly connected to the bottom end of the connecting plate. An installation groove is provided between the interior of the protruding plate and the interior of the connecting plate.
[0011] As a preferred embodiment of the above technical solution, the fixing component includes a pull head, a plurality of anti-slip protrusions are fixedly connected to the side end of the pull head, a fixing rod is fixedly connected to the side end of the pull head, the fixing rod is inserted into the mounting groove, a fixing plate is fixedly connected to the side end of the fixing rod, an insert rod is fixedly connected to the side end of the fixing plate, a spring is sleeved on the outer end of the fixing rod, the top end of the spring is fixedly connected to the bottom end of the fixing plate, the insert rod is inserted into the insertion hole, and a thread is formed in the middle of the fixing rod.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This utility model, through the coordinated arrangement of support arm one, support arm two, telescopic component, limiting component, and fixing component, combined with the guiding effect of slider and groove, significantly increases the contact area between support arm one and support arm two, disperses the stress points, effectively solves the shaking problem of traditional single hydraulic cylinder drive, reduces the wear of cylinder seals, and improves safety during heavy-duty operations. The automatic reset design of the fixing component enables quick locking, and with the setting of multiple sets of insertion holes, the support arm length can be flexibly selected and firmly fixed to adapt to the length requirements of different working scenarios. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a telescopic boom for an electric loader.
[0015] Figure 2 A schematic diagram of the telescopic boom of an electric loader from below.
[0016] Figure 3 This is a cross-sectional schematic diagram of the telescopic boom of an electric loader.
[0017] Figure 4 for Figure 3 A magnified schematic diagram of part A in the diagram.
[0018] In the diagram: 1. Base; 101. Casters; 2. Body; 3. Support rod; 301. Support arm one; 302. Cylinder one; 303. Support arm two; 304. Hook; 305. Slider; 306. Slide groove; 307. Insertion hole; 4. Telescopic assembly; 401. Vertical plate one; 402. Vertical plate two; 403. Cylinder two; 5. Limiting assembly; 501. Side plate; 502. Limiting rod; 503. Sleeve plate; 504. Connecting plate; 505. Protruding plate; 506. Mounting groove; 6. Fixing assembly; 601. Pull head; 602. Anti-slip protrusion; 603. Fixing rod; 604. Fixing plate; 605. Insertion rod; 606. Spring. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0020] like Figures 1-4As shown, this utility model provides a technical solution: a telescopic outrigger for an electric loader, including a base 1, with several movable wheels 101 fixedly installed at the bottom end of the base 1, a body 2 fixedly installed at the top end of the base 1, a support rod 3 fixedly installed at the top end of the base 1, an outrigger 1 301 hinged to the top end of the support rod 3, a cylinder 302 hinged between the side end of the support rod 3 and the bottom end of the outrigger 1 301, an outrigger 2 303 inserted inside the outrigger 1 301, a sliding groove 306 opened inside the outrigger 1 301, a slider 305 fixedly connected to the side end of the outrigger 2 303, the slider 305 slidably connected in the sliding groove 306, several insertion holes 307 spaced apart at the bottom end of the outrigger 1 301, a hook 304 fixedly installed at the side end of the outrigger 2 303, and the top end of the outrigger 1 301 and the outrigger 2 303 304 hinged to the cylinder 302. A telescopic component 4 is provided between the top ends of the second arm 303. A limiting component 5 is fixedly provided between the side ends of the first arm 301 and the side ends of the second arm 303. A fixing component 6 is provided at the bottom end of the limiting component 5. Through the cooperative arrangement of the first arm 301, the second arm 303, the telescopic component 4, the limiting component 5 and the fixing component 6, combined with the guiding effect of the slider 305 and the slide groove 306, the contact area between the first arm 301 and the second arm 303 is greatly increased, the force points are distributed, the shaking problem of traditional single hydraulic cylinder drive is effectively solved, the wear of cylinder seals is reduced, and the safety of heavy-duty operation is improved. The automatic reset design of the fixing component 6 realizes quick clamping. With the setting of multiple sets of insertion holes 307, the arm length can be flexibly selected and firmly fixed to adapt to the length requirements of different working scenarios.
[0021] As one implementation method in this embodiment, such as Figure 1 As shown, the telescopic assembly 4 includes a first upright plate 401 and a second upright plate 402. The first upright plate 401 is fixedly installed on the top of the first support arm 301, and the second upright plate 402 is fixedly connected to the top of the second support arm 303. A second cylinder 403 is fixedly installed between the first upright plate 401 and the second upright plate 402. In practice, when the second cylinder 403 of the telescopic assembly 4 is activated, its telescopic end pushes the second upright plate 402 to drive the second support arm 303 to slide along the inside of the first support arm 301. At this time, the slider 305 on the side of the second support arm 303 slides along the slide groove 306, thereby realizing the length adjustment of the first support arm 301 and the second support arm 303.
[0022] As one implementation method in this embodiment, such as Figure 2 and Figure 4As shown, the limiting assembly 5 includes two side plates 501, which are fixedly connected to the left and right sides of the second support arm 303, respectively. Each side plate 501 has a limiting rod 502 fixedly connected to its side end. Each side of the first support arm 301 has a sleeve plate 503 fixedly connected to its left and right sides. Each limiting rod 502 is inserted into each sleeve plate 503. A connecting plate 504 is fixedly connected between the side ends of the two limiting rods 502. The connecting plate 504 is U-shaped, and a protruding plate 505 is fixedly connected to the bottom end of the connecting plate 504. An installation groove 506 is provided between the interior of the 5 and the interior of the connecting plate 504. During implementation, when the second support arm 303 extends, the limiting rod 502 of the limiting component 5 slides synchronously within the sleeve 503. Through the connection between the side plate 501 and the connecting plate 504, the left and right swaying of the second support arm 303 is restricted, thereby reducing the additional load on the cylinder, reducing the wear rate of the seals, improving the working accuracy, and meeting the stable working requirements under heavy load conditions. The U-shaped connecting plate 504 connects the two limiting rods 502 into a whole, improving the deformation resistance of the limiting component 5.
[0023] As one implementation method in this embodiment, such as Figure 4As shown, the fixing component 6 includes a pull head 601. Several anti-slip protrusions 602 are fixedly connected to the side end of the pull head 601. A fixing rod 603 is fixedly connected to the side end of the pull head 601. The fixing rod 603 is inserted into the mounting groove 506. A fixing plate 604 is fixedly connected to the side end of the fixing rod 603. A plug rod 605 is fixedly connected to the side end of the fixing plate 604. A spring 606 is sleeved on the outer end of the fixing rod 603. The top end of the spring 606 is fixedly connected to the bottom end of the fixing plate 604. The plug rod 605 is inserted into the insertion hole 307. The fixing rod 603 has a threaded section in the middle. During operation, when adjusting the length of the support arm, first pull the pull head 601 of the fixing component 6. The anti-slip protrusion 602 increases the friction of the hand to facilitate the application of force. The pull head 601 drives the fixing rod 603 to move in the mounting groove 506. The fixing plate 604 compresses the spring 606, causing the insertion rod 605 to be pulled out from the insertion hole 307 at the bottom end of the first support arm 301, releasing the fixation of the second support arm 303. At this time, when the threaded section in the middle of the fixing rod 603 contacts the bottom end of the protrusion 505, it can be rotated to adjust the length. Pull head 601 and fixing rod 603 allow the thread at the middle end of fixing rod 603 to be threadedly connected to the bottom end of convex plate 505, thus fixing the insertion rod 605 and preventing it from being confined within insertion hole 307. Then, cylinder 403 of telescopic component 4 is activated, and its telescopic end pushes vertical plate 402, causing support arm 303 to slide along the inside of support arm 301. At this time, slider 305 on the side of support arm 303 slides along slide groove 306, and simultaneously, limiting rod 502 of limiting component 5 slides synchronously within sleeve plate 503. The movement of the second support arm 303 is restricted by the connection between the side plate 501 and the connecting plate 504. When the second support arm 303 moves to the target length, the insertion rod 605 is aligned with one of the corresponding insertion holes 307. The rotating pull head 601 drives the fixed rod 603 to rotate, so that the thread on the outer end of the fixed rod 603 is disconnected from the bottom end of the protrusion plate 505. The pull head 601 is released, the spring 606 returns to its original position and pushes the fixed plate 604, so that the insertion rod 605 is inserted into the corresponding insertion hole 307, thus completing the fixation of the support arm length.
[0024] Working principle: When adjusting the outrigger angle, cylinder 302 is activated, and its telescopic end pushes outrigger 301 to rotate around the hinge point at the top of the support rod 3, thereby adjusting the overall working angle of the outrigger to adapt to different height loading and unloading needs. When adjusting the outrigger length, first pull the pull head 601 of the fixing component 6. The anti-slip protrusion 602 increases the friction of the hand to facilitate the application of force. The pull head 601 drives the fixing rod 603 to move in the mounting groove 506. The fixing plate 604 compresses the spring 606, causing the insertion rod to... 605 is pulled out from the insertion hole 307 at the bottom end of the first support arm 301, releasing the fixation of the second support arm 303. At this time, when a section of the thread in the middle of the fixing rod 603 contacts the bottom end of the convex plate 505, the thread at the middle end of the fixing rod 603 can be threaded into the bottom end of the convex plate 505 by rotating the pull head 601 and the fixing rod 603. This fixes the insertion rod 605, preventing it from being confined within the insertion hole 307. Then, the cylinder 4 of the telescopic assembly 4 is activated. 03. Its telescopic end pushes the upright plate 402, causing the second support arm 303 to slide along the inside of the first support arm 301. At this time, the slider 305 on the side end of the second support arm 303 slides along the slide groove 306. At the same time, the limiting rod 502 of the limiting component 5 slides synchronously in the sleeve plate 503. Through the connection between the side plate 501 and the connecting plate 504, the left and right swaying of the second support arm 303 is restricted. When the second support arm 303 moves to the target length, the insertion rod 605 is aligned with one of the corresponding insertion holes 307. When the pull head 601 is rotated, it drives the fixed rod 603 to rotate, causing the thread at the outer end of the fixed rod 603 to disconnect from the bottom end of the convex plate 505. The pull head 601 is released, the spring 606 returns to its original position and pushes the fixed plate 604, so that the insertion rod 605 is inserted into the corresponding insertion hole 307, thus completing the fixing of the support arm length. At this time, the hook 304 can carry out material loading and unloading operations. The U-shaped connecting plate 504 further enhances the structural stability of the limit rod 502 and ensures the overall rigidity under heavy load conditions.
[0025] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A telescopic outrigger for an electric loader, comprising a base (1), wherein a plurality of movable wheels (101) are fixedly installed at the bottom end of the base (1), an organism (2) is fixedly installed at the top end of the base (1), a support rod (3) is fixedly installed at the top end of the base (1), an outrigger (301) is hinged to the top end of the support rod (3), and a cylinder (302) is hinged between the side end of the support rod (3) and the bottom end of the outrigger (301), characterized in that: A second support arm (303) is inserted inside the first support arm (301). A hook (304) is fixedly installed on the side end of the second support arm (303). A telescopic component (4) is provided between the top end of the first support arm (301) and the top end of the second support arm (303). A limiting component (5) is fixedly provided between the side end of the first support arm (301) and the side end of the second support arm (303). A fixing component (6) is provided at the bottom end of the limiting component (5).
2. The telescopic outrigger of an electric loader according to claim 1, characterized in that: The telescopic assembly (4) includes a first upright plate (401) and a second upright plate (402). The first upright plate (401) is fixedly installed on the top of the first support arm (301), and the second upright plate (402) is fixedly connected to the top of the second support arm (303). A second cylinder (403) is fixedly installed between the first upright plate (401) and the second upright plate (402).
3. The telescopic outrigger of an electric loader according to claim 2, characterized in that: The first support arm (301) has a sliding groove (306) inside, and the second support arm (303) has a slider (305) fixedly connected to its side end. The slider (305) is slidably connected in the sliding groove (306).
4. The telescopic outrigger of an electric loader according to claim 3, characterized in that: The bottom end of the first support arm (301) is provided with a number of insertion holes (307) spaced apart.
5. The telescopic outrigger of an electric loader according to claim 1, characterized in that: The limiting component (5) includes two side plates (501), which are fixedly connected to the left and right sides of the second support arm (303). Each side plate (501) is fixedly connected to a limiting rod (502). Each side of the first support arm (301) is fixedly connected to a sleeve plate (503). Each limiting rod (502) is inserted into each sleeve plate (503). A connecting plate (504) is fixedly connected between the side ends of the two limiting rods (502).
6. The telescopic outrigger of an electric loader according to claim 5, characterized in that: The connecting plate (504) is U-shaped, and a protruding plate (505) is fixedly connected to the bottom end of the connecting plate (504). An installation groove (506) is provided between the interior of the protruding plate (505) and the interior of the connecting plate (504).
7. The telescopic boom of an electric loader according to claim 6, characterized in that: The fixing component (6) includes a pull head (601), a plurality of anti-slip protrusions (602) are fixedly connected to the side end of the pull head (601), a fixing rod (603) is fixedly connected to the side end of the pull head (601), the fixing rod (603) is inserted into the mounting groove (506), a fixing plate (604) is fixedly connected to the side end of the fixing rod (603), a plug rod (605) is fixedly connected to the side end of the fixing plate (604), a spring (606) is sleeved on the outer end of the fixing rod (603), the top end of the spring (606) is fixedly connected to the bottom end of the fixing plate (604), the plug rod (605) is inserted into the insertion hole (307), and a thread is opened in the middle of the fixing rod (603).