A support leg assembly for an engineering machine
By using an angle and height adjustment mechanism, combined with an inclination sensor and worm gear transmission, multi-stage extension and precise leveling of the outriggers are achieved, solving the problems of insufficient adjustment of traditional outriggers in complex terrain and unreliable manual operation, thus improving construction safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-16
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional outrigger components are difficult to adapt to changing terrain conditions in complex terrain, have a limited adjustment range, resulting in equipment tilting or uneven force, and the adjustment operation relies on manual labor, which is inefficient.
It adopts angle adjustment mechanism and height adjustment mechanism, combined with tilt sensor, worm gear transmission and bevel gear set linkage to realize multi-stage extension and precise leveling, and mechanical locking to ensure the stability of outriggers and simplify the operation process.
It significantly expands the vertical adjustment range of the outriggers, enabling rapid leveling and stable support, improving construction safety and efficiency, and solving the problems of insufficient adjustment range and unreliable manual operation of traditional outriggers.
Smart Images
Figure CN224469953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering machinery technology, specifically to a support leg assembly for engineering machinery equipment. Background Technology
[0002] In the field of construction machinery, outrigger assemblies, as the core support structure for stable equipment operation, directly affect construction safety and operational efficiency. As modern engineering construction moves towards complex terrain, large-tonnage lifting, and high-precision operations, the performance requirements for outrigger assemblies are showing a diversified and intelligent development trend. On the one hand, in large-scale projects such as wind power installation and bridge construction, outriggers need to withstand extreme loads of hundreds of tons; on the other hand, in space-constrained conditions such as urban redevelopment and subway construction, outriggers are required to have the characteristics of rapid deployment, precise leveling, and compact storage.
[0003] Traditional outriggers typically employ fixed angle or single height adjustment methods, making them ill-suited for complex and varied terrain conditions. Especially when operating on slopes, soft ground, or uneven surfaces, the limited adjustment range of existing outriggers can easily lead to equipment tilting or uneven stress on the outriggers, affecting construction accuracy and posing safety hazards. Furthermore, the adjustment of traditional outriggers largely relies on manual labor, which is inefficient and makes precise leveling difficult. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a support leg assembly for engineering machinery, which solves the problems mentioned in the background.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a support leg assembly for engineering machinery equipment, including a base and a mounting rod, wherein a rubber sleeve is fixedly sleeved on the base, the upper end of the rubber sleeve is rotatably connected to the mounting rod, an angle adjustment mechanism for adjusting the angle of the mounting rod is provided inside the base, and a height adjustment mechanism is provided inside the mounting rod;
[0008] The angle adjustment mechanism includes an adjusting rod rotatably mounted in the base, a mounting rod rotatably connected to the base via a rotating rod, the rotating rod and the adjusting rod being perpendicularly distributed, and an angle sensor embedded in the mounting rod. A first bevel gear is sleeved on the rotating rod, and a second bevel gear is sleeved on the adjusting rod, with the second bevel gear meshing with the first bevel gear. A worm gear is sleeved on the adjusting rod, and a worm corresponding to the worm gear is rotatably mounted in the base, with the worm gear meshing with the worm gear. A first lifting rod is slidably mounted in the mounting rod, and a second lifting rod is slidably mounted in the first lifting rod.
[0009] Preferably, the mounting rod is provided with a threaded rod, the lower end of which passes through the mounting rod and is rotatably connected to the mounting rod through a rolling bearing; the first lifting rod is provided with a threaded tube, the lower end of which passes through the first lifting rod and is rotatably connected to the first lifting rod through a rolling bearing.
[0010] Preferably, the upper end of the threaded rod passes through the first lifting rod and is threadedly connected to the first lifting rod, and the upper end of the threaded tube passes through the second lifting rod and is threadedly connected to the second lifting rod.
[0011] Preferably, the threaded rod has two sets of symmetrically distributed keyways, and the threaded tube has two sets of symmetrically distributed key blocks, with the key blocks and keyways being correspondingly arranged, and the threaded tube being slidably connected to the threaded tube through the key blocks and keyways.
[0012] Preferably, the worm gear is fitted with two sets of symmetrically distributed ratchet wheels, and the base is provided with two sets of pawls corresponding to the ratchet wheels. The two sets of pawls are respectively engaged with the corresponding ratchet wheels. Both sets of pawls are rotatably connected to the base through rotating rods. Gears are fitted on both sets of rotating rods. Racks corresponding to the gears are slidably installed in the base. Two sets of racks are respectively engaged with the corresponding gears. A connecting frame is slidably installed in the base. Both sets of racks are fixedly installed on the connecting frame. A sliding rod corresponding to the connecting frame is fixedly installed in the base. A locking block is fixedly installed on the connecting frame.
[0013] Preferably, the connecting frame is slidably sleeved with the slide rod, and two sets of symmetrically distributed springs are sleeved on the slide rod. The two ends of the two sets of springs are respectively fixedly connected to the connecting frame and the base. A first torsion spring is sleeved on each of the two sets of rotating rods, and the two ends of the first torsion spring are respectively fixedly connected to the pawl and the base.
[0014] Preferably, a locking rod corresponding to the locking block is fixedly installed inside the base. Two sets of symmetrically distributed locking frames are sleeved on the locking rod, and two sets of symmetrically distributed second torsion springs are sleeved on the locking rod. The two ends of the second torsion springs are fixedly connected to the locking frames and the locking rod, respectively. Both sets of locking frames are movably locked into the locking block.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a support leg assembly for engineering machinery equipment, which has the following beneficial effects:
[0017] The motor inside the mounting rod drives the threaded rod to rotate, and the linkage between the key block and the keyway causes the threaded tube to rotate synchronously, pushing the first and second lifting rods to achieve multi-stage extension and retraction, significantly expanding the vertical adjustment range of the outriggers to adapt to different terrain elevation differences. At the same time, the tilt sensor monitors the tilt angle of the mounting rod in real time, and in conjunction with the worm gear transmission and bevel gear set linkage, it can precisely control the deflection of the rotating rod, realizing rapid leveling of the outriggers in horizontal and sloping conditions. This effectively solves the problem of equipment tilting or uneven force caused by insufficient adjustment range of traditional outriggers. After the angle adjustment is completed, the ratchet and pawl on both sides of the worm gear engage to form a two-way mechanical lock, preventing the worm gear from rotating accidentally and ensuring the angular stability of the outriggers under load. When readjustment is required, simply pull the connecting frame, which is temporarily fixed by the clip and the clip block. The sliding of the connecting frame drives the rack and pinion to rotate, causing the pawl to disengage from the ratchet, thus releasing the worm gear lock. After the connecting frame is released, the spring and the first torsion spring reset, causing the pawl to re-engage. The operation is simple and safe, solving the unreliability problem of traditional outriggers relying on manual locking. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the height adjustment mechanism of this utility model;
[0021] Figure 3 This is a schematic diagram of the angle adjustment mechanism of this utility model;
[0022] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the diagram.
[0023] In the diagram: 1. Base; 2. Mounting rod; 3. Rubber sleeve; 4. Height adjustment mechanism; 401. First lifting rod; 402. Second lifting rod; 403. Threaded rod; 404. Keyway; 405. Threaded tube; 406. Key block; 5. Angle adjustment mechanism; 501. Tilt sensor; 502. Rotating rod; 503. First bevel gear; 504. Adjusting rod; 505. Second bevel gear; 506. Worm gear; 507. Worm; 508. Ratchet; 509. Pawl; 510. Rotating rod; 511. First torsion spring; 512. Gear; 513. Rack; 514. Connecting frame; 515. Slide rod; 516. Spring; 517. Locking block; 518. Locking rod; 519. Locking bracket; 520. Second torsion spring. Detailed Implementation
[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0025] Figures 1-4 In one embodiment of this utility model, a support leg assembly for engineering machinery includes a base 1 and a mounting rod 2. A rubber sleeve 3 is fixedly fitted onto the base 1, and the upper end of the rubber sleeve 3 is rotatably connected to the mounting rod 2. An angle adjustment mechanism 5 for adjusting the angle of the mounting rod 2 is provided inside the base 1, and a height adjustment mechanism 4 is provided inside the mounting rod 2. The angle adjustment mechanism 5 includes an adjustment rod 504 rotatably installed inside the base 1. The mounting rod 2 is rotatably connected to the base 1 via a rotating rod 502. The rotating rod 502 and the adjustment rod 504 are perpendicularly distributed, and an angle sensor 501 is embedded in the mounting rod 2. A first bevel gear 503 is fitted onto the rotating rod 502, and a second bevel gear 505 is fitted onto the adjustment rod 504, with the second bevel gear 505 meshing with the first bevel gear 503. A worm gear 506 is fitted onto the adjustment rod 504, and a corresponding worm gear 506 is rotatably installed inside the base 1. The worm gear 507 meshes with the worm wheel 506. A first lifting rod 401 is slidably installed inside the mounting rod 2, and a second lifting rod 402 is slidably installed inside the first lifting rod 401. The motor inside the mounting rod 2 drives the threaded rod 403 to rotate. The linkage between the key block 406 and the keyway 404 causes the threaded tube 405 to rotate synchronously, thereby driving the first lifting rod 401 and the second lifting rod 402 to achieve multi-stage extension and retraction, significantly expanding the vertical adjustment range of the outriggers and adapting to the elevation differences of different terrains. At the same time, the tilt sensor 501 monitors the tilt angle of the mounting rod 2 in real time. With the linkage of the worm wheel 506 and worm gear 507 and the bevel gear 512, the deflection of the rotating rod 502 can be precisely controlled, realizing rapid leveling of the outriggers in horizontal and sloping conditions. This effectively solves the problem of equipment tilting or uneven force caused by insufficient adjustment range of traditional outriggers. After the angle adjustment is completed...
[0026] In this embodiment, reference Figure 2 , Figure 3As shown, the mounting rod 2 is provided with a threaded rod 403. The lower end of the threaded rod 403 passes through the mounting rod 2 and is rotatably connected to the mounting rod 2 through a rolling bearing. The first lifting rod 401 is provided with a threaded tube 405. The lower end of the threaded tube 405 passes through the first lifting rod 401 and is rotatably connected to the first lifting rod 401 through a rolling bearing. The upper end of the threaded rod 403 passes through the first lifting rod 401 and is threadedly connected to the first lifting rod 401. The upper end of the threaded tube 405 passes through the second lifting rod 402 and is threadedly connected to the second lifting rod 402. The threaded rod 403 has two sets of symmetrically distributed keyways 404. The threaded tube 405 has two sets of symmetrically distributed key blocks 406, and the key blocks 406 and keyways 404 are correspondingly arranged. The threaded tube 405 is connected to the threaded rod 402 through the key blocks 406 and keyways 404. 5. Sliding sleeve connection: When the outrigger height needs to be adjusted, the motor inside the mounting rod 2 drives the threaded rod 403 to rotate. Through the cooperation of the keyway 404 and the key block 406, the threaded tube 405 is driven to rotate synchronously. The threaded rod 403 is threadedly connected to the first lifting rod 401, pushing it to slide along the inner wall of the mounting rod 2. At the same time, the threaded tube 405 is threadedly connected to the second lifting rod 402, further extending or retracting the second lifting rod 402 to achieve multi-level height adjustment. Angle adjustment is achieved by rotating the worm gear 507 to drive the worm wheel 506, which drives the adjusting rod 504 to rotate, causing the second bevel gear 505 to mesh with the first bevel gear 503, thereby driving the rotating rod 502 to deflect and adjust the tilt angle of the mounting rod 2. The tilt sensor 501 provides real-time feedback of angle data to ensure adjustment accuracy and enable the outrigger to adapt to complex terrain.
[0027] In this embodiment, reference Figure 3 and Figure 4As shown, two sets of symmetrically distributed ratchet wheels 508 are sleeved on the worm gear 507. The base 1 has two sets of pawls 509 corresponding to the ratchet wheels 508. The two sets of pawls 509 are respectively engaged with their corresponding ratchet wheels 508. Both sets of pawls 509 are rotatably connected to the base 1 via rotating rods 510. Gears 512 are sleeved on both rotating rods 510. Racks 513 corresponding to the gears 512 are slidably installed in the base 1. The two sets of racks 513 are respectively engaged with their corresponding gears 512. A connecting frame 514 is slidably installed in the base 1. Both sets of racks 513... A sliding rod 515, corresponding to the connecting frame 514, is fixedly installed inside the base 1. A locking block 517 is fixedly installed on the connecting frame 514. The connecting frame 514 and the sliding rod 515 are slidably connected. Two sets of symmetrically distributed springs 516 are sleeved on the sliding rod 515. The two ends of the two sets of springs 516 are fixedly connected to the connecting frame 514 and the base 1, respectively. A first torsion spring 511 is sleeved on each of the two sets of rotating rods 510. The two ends of the first torsion spring 511 are fixedly connected to the pawl 509 and the base 1, respectively. A locking block 517 is fixedly installed inside the base 1. The 17 corresponds to the locking lever 518, on which two sets of symmetrically distributed locking brackets 519 are sleeved. Two sets of symmetrically distributed second torsion springs 520 are also sleeved on the locking lever 518. The two ends of the second torsion springs 520 are fixedly connected to the locking brackets 519 and the locking lever 518, respectively. Both sets of locking brackets 519 are movably engaged with the locking blocks 517. After angle adjustment, the ratchet wheels 508 on both sides of the worm gear 507 engage with the pawls 509, forming a bidirectional mechanical lock to prevent the worm gear 507 from rotating due to external force or vibration, ensuring the stability of the outrigger angle. When readjustment is required, pull outwards... The connecting frame 514 compresses the spring 516, which in turn moves the rack 513. The rack 513 drives the gear 512 to rotate, causing the pawl 509 to disengage from the ratchet 508 and releasing the worm gear 507 from locking. At this time, the clamp 519 engages with the clamp block 517 under the action of the second torsion spring 520, temporarily fixing the position of the connecting frame 514 and allowing the worm gear 507 to rotate freely. After adjustment, the connecting frame 514 is released, the spring 516 pushes the rack 513 to reset, and the pawl 509 re-engages the ratchet 508 under the action of the first torsion spring 511, restoring the self-locking state and ensuring the stable support of the outrigger.
[0028] In this embodiment, when the outrigger height needs to be adjusted, the motor inside the mounting rod 2 drives the threaded rod 403 to rotate. Through the engagement of the keyway 404 and the key block 406, the threaded tube 405 rotates synchronously. The threaded rod 403 is threadedly connected to the first lifting rod 401, pushing it to slide along the inner wall of the mounting rod 2. Simultaneously, the threaded tube 405 is threadedly connected to the second lifting rod 402, further extending or retracting the second lifting rod 402 to achieve multi-level height adjustment. Angle adjustment is achieved by rotating the worm gear 507 to drive the worm wheel 506, causing the adjusting rod 504 to rotate. This causes the second bevel gear 505 to mesh with the first bevel gear 503, thereby causing the rotating rod 502 to deflect, adjusting the tilt angle of the mounting rod 2. The tilt sensor 501 provides real-time angle data feedback to ensure adjustment accuracy, allowing the outrigger to adapt to complex terrain. After the section is completed, the ratchet 508 on both sides of the worm 507 engages with the pawl 509 to form a two-way mechanical lock, preventing the worm 507 from rotating due to external force or vibration, and ensuring the stability of the outrigger angle. When readjustment is required, the connecting bracket 514 is pulled outward, compressing the spring 516 and driving the rack 513 to move. The rack 513 drives the gear 512 to rotate, causing the pawl 509 to disengage from the ratchet 508 and releasing the worm 507 from lock. At this time, the clamp 519 engages with the clamp block 517 under the action of the second torsion spring 520, temporarily fixing the position of the connecting bracket 514, so that the worm 507 can rotate freely. After adjustment, the connecting bracket 514 is released, the spring 516 pushes the rack 513 to reset, and the pawl 509 re-engages with the ratchet 508 under the action of the first torsion spring 511, restoring the self-locking state and ensuring the stable support of the outrigger.
[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0030] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A support leg assembly for engineering machinery, comprising a base (1) and a mounting rod (2), characterized in that: A rubber sleeve (3) is fixedly fitted on the base (1). The upper end of the rubber sleeve (3) is rotatably connected to the mounting rod (2). An angle adjustment mechanism (5) for adjusting the angle of the mounting rod (2) is provided inside the base (1). A height adjustment mechanism (4) is provided inside the mounting rod (2). The angle adjustment mechanism (5) includes an adjustment rod (504) rotatably installed in the base (1), a mounting rod (2) rotatably connected to the base (1) via a rotating rod (502), the rotating rod (502) and the adjustment rod (504) being vertically distributed, and an inclination sensor (501) embedded in the mounting rod (2), a first bevel gear (503) sleeved on the rotating rod (502), a second bevel gear (505) sleeved on the adjustment rod (504), and the second bevel gear (505) meshing with the first bevel gear (503), a worm gear (506) sleeved on the adjustment rod (504), a worm (507) rotatably installed in the base (1) corresponding to the worm gear (506), the worm gear (507) meshing with the worm gear (506), a first lifting rod (401) slidably installed in the mounting rod (2), and a second lifting rod (402) slidably installed in the first lifting rod (401).
2. The outrigger assembly for engineering machinery according to claim 1, characterized in that: The mounting rod (2) is provided with a threaded rod (403), the lower end of which passes through the mounting rod (2) and is rotatably connected to the mounting rod (2) through a rolling bearing. The first lifting rod (401) is provided with a threaded tube (405), the lower end of which passes through the first lifting rod (401) and is rotatably connected to the first lifting rod (401) through a rolling bearing.
3. The outrigger assembly for engineering machinery according to claim 2, characterized in that: The upper end of the threaded rod (403) passes through the first lifting rod (401) and is threadedly connected to the first lifting rod (401), and the upper end of the threaded tube (405) passes through the second lifting rod (402) and is threadedly connected to the second lifting rod (402).
4. The outrigger assembly for engineering machinery according to claim 2, characterized in that: The threaded rod (403) has two sets of symmetrically distributed keyways (404), and the threaded tube (405) has two sets of symmetrically distributed key blocks (406). The key blocks (406) and keyways (404) are correspondingly arranged, and the threaded tube (405) is slidably connected to the threaded tube (405) through the key blocks (406) and keyways (404).
5. The outrigger assembly for engineering machinery according to claim 1, characterized in that: Two sets of symmetrically distributed ratchet wheels (508) are sleeved on the worm gear (507). The base (1) is provided with two sets of pawls (509) corresponding to the ratchet wheels (508). The two sets of pawls (509) are respectively engaged with the corresponding ratchet wheels (508). The two sets of pawls (509) are rotatably connected to the base (1) through rotating rods (510). The two sets of rotating rods (510) are each sleeved with gears (512). The base (1) is slidably installed with racks (513) corresponding to the gears (512). The two sets of racks (513) are respectively engaged with the corresponding gears (512). The base (1) is slidably installed with a connecting frame (514). The two sets of racks (513) are fixedly installed on the connecting frame (514). The base (1) is fixedly installed with a sliding rod (515) corresponding to the connecting frame (514). The connecting frame (514) is fixedly installed with a locking block (517).
6. The outrigger assembly for engineering machinery according to claim 5, characterized in that: The connecting frame (514) is slidably sleeved with the slide rod (515). Two sets of symmetrically distributed springs (516) are sleeved on the slide rod (515). The two ends of the two sets of springs (516) are fixedly connected to the connecting frame (514) and the base (1) respectively. The two sets of rotating rods (510) are each sleeved with a first torsion spring (511), and the two ends of the first torsion spring (511) are fixedly connected to the pawl (509) and the base (1) respectively.
7. The outrigger assembly for engineering machinery according to claim 1, characterized in that: The base (1) is fixedly installed with a locking rod (518) corresponding to the locking block (517). Two sets of symmetrically distributed locking frames (519) are sleeved on the locking rod (518). Two sets of symmetrically distributed second torsion springs (520) are sleeved on the locking rod (518). The two ends of the second torsion springs (520) are fixedly connected to the locking frames (519) and the locking rod (518) respectively. Both sets of locking frames (519) are movably locked to the locking block (517).