Lifting machine corbel with self-locking structure

Abstract

The utility model relates to the technical field of lifting machine corbels, and discloses a lifting machine corbel with a self-locking structure, which comprises a rack, according to the lifting machine corbel with the self-locking structure, through the arrangement of a movable assembly, when a supporting block moves upwards, a rotating shaft and a sliding rod are driven to slide upwards, when the sliding rod moves upwards, a sliding groove of the rack abuts against the sliding rod, and when the sliding rod moves downwards, the rotating shaft is driven to rotate. When the threaded rod rotates, a sliding plate and a fixed block can be driven to slide downwards, and when the fixed block slides downwards, a movable rod hinged to the bottom is driven to expand towards the two sides; a sliding block hinged to the bottom of a movable rod and an inserting rod are made to move towards the surface close to the arm in a supporting block, the inserting rod is inserted into the surface of a first gear for limiting, and the situation that when the arm lifts for a long time, due to equipment aging, the arm expands, and a lifted object accidentally slides off is prevented; and the reliability and the safety of the lifting machine corbel during use are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of lift arm technology, specifically a lift arm with a self-locking structure. Background Technology

[0002] In various industrial production and logistics scenarios, lifting jib arms serve as key lifting equipment, undertaking the task of lifting and moving objects of varying weights. With the expansion of production scale and the increasing demands on operations, higher requirements are being placed on the performance and reliability of lifting jib arms.

[0003] However, existing lifting arms with self-locking structures are prone to problems such as arm expansion and decreased lifting stability during use due to factors such as equipment aging and mechanical wear. This can lead to the accidental slippage of the lifted object, affecting work efficiency and potentially causing safety accidents. Existing lifting arms mainly use hydraulic rods to drive the blocks and lift the arms to achieve the lifting function. However, they lack an effective stabilization mechanism during the lifting process. When lifting heavy objects, the arms are easily affected by various external forces, such as vibration and shaking, which can cause changes in the relative position between the arms and the lifted object, increasing safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a lifting arm with a self-locking structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting arm with a self-locking structure, comprising a frame, wherein a hydraulic rod is fixedly installed on the top of the frame. By placing an object at the bottom of the arm, the hydraulic rod is activated to drive a support block to slide upward inside the frame. When the support block slides upward, it drives the arm to move upward, thereby lifting the object. When the hydraulic rod stops, it can self-lock the arm during lifting. A support block is fixedly installed on the surface of the hydraulic rod, and the arm is hinged inside the support block. The surface of the frame is provided with fixed components and movable components for improving the lifting stability of the arm, and the movable components include:

[0006] A rotating shaft is rotatably connected to the surface of a hydraulic rod. When the slide rod moves upward to the top of the slide groove opened on the frame, the frame will abut against the slide rod, thereby causing the slide rod to slide downward in the arc-shaped groove opened on the surface of the rotating shaft. A threaded rod is fixedly installed at the bottom of the rotating shaft, and a sliding plate is threadedly connected to the surface of the threaded rod. The sliding plate is slidably connected to the inner wall of the frame.

[0007] Preferably, a fixed block is fixedly installed at the bottom of the skateboard. When the fixed block slides down, it will cause the movable rod hinged at the bottom to expand to both sides. When the movable rod expands, the sliding block hinged at the bottom of the movable rod will move inside the support block towards the surface of the arm and hand. The movable rod is hinged to the inside of the fixed block, and the sliding block is hinged to the bottom of the movable rod. The sliding block is slidably connected inside the support block, and an insert rod is fixedly installed on the outside of the sliding block.

[0008] Preferably, a gear is rotatably connected to the inner side of the support block. The gear is fixedly installed on the surface of the arm. When the sliding block slides, it will drive the insertion rod to slide in the same direction as the sliding block, so that the insertion rod is inserted into the surface of the gear to restrict it. This prevents the arm from expanding due to equipment aging during long-term lifting, which could cause the lifted object to slip accidentally. This enhances the reliability and safety of the lifting arm during use.

[0009] Preferably, the fixing component includes: a slide rod, which is slidably connected to the surface of the rotating shaft, the slide rod passes through the frame, and a rack is fixedly installed at the bottom of the slide rod. When the slide rod slides upward, it will drive the rack to slide upward, and when the rack slides upward, it will drive the outer meshing gear two to rotate.

[0010] Preferably, a second gear is engaged on the outer side of the rack, the second gear is rotatably connected to the outer wall of the frame, and a bracket is fixedly installed on the outer side of the second gear.

[0011] Preferably, one end of the telescopic rod is fixedly installed at the bottom of the slide bar, and the other end of the telescopic rod is fixedly installed at the top of the slide plate. A fixed spring is fixedly installed inside the telescopic rod. When the gear rotates, it will drive the trailer to move closer to the bottom of the arm and hand, thereby abutting against the bottom of the arm and hand, preventing the arm and hand from shaking or shifting during the lifting process. This improves the stability and accuracy of the lifting, as well as the benefits of dispersing the lifting force and reducing the pressure on the arm and hand and related components.

[0012] Preferably, the outer side of the frame is provided with a sliding groove, which can drive the sliding rod to slide inside the frame; the top of the support block is provided with a groove, which can drive the movable rod to move inside the support block; and the surface of the rotating shaft is provided with an arc-shaped groove, which can drive the rotation of the rotating shaft by the sliding of the sliding rod.

[0013] Compared with the prior art, the present invention provides a lifting arm with a self-locking structure, which has the following advantages:

[0014] 1. This lifting arm with a self-locking structure, through the setting of the movable components, when the lifting block moves upward, it will drive the rotating shaft and the sliding rod to slide upward. When the sliding rod moves upward, the frame slide groove will abut against the sliding rod, thereby driving the sliding rod to slide downward on the surface of the rotating shaft, and driving the rotating shaft and the threaded rod to rotate. When the threaded rod rotates, it will drive the sliding plate and the fixed block to slide downward. When the fixed block slides downward, it will drive the movable rod at the bottom hinge to expand to both sides, thereby causing the sliding block and the insert rod at the bottom hinge of the movable rod to move towards the surface of the arm inside the lifting block. The insert rod is inserted into the surface of the gear to restrict it, preventing the arm from expanding due to equipment aging during long-term lifting, which could cause the lifted object to accidentally slip off, thus enhancing the reliability and safety of the lifting arm during use.

[0015] 2. The lifting arm with a self-locking structure, through the setting of the fixing component, when the slide bar slides upward, it will drive the rack to slide upward. When the rack slides upward, it will drive the outer meshing gear two to rotate. When gear two rotates, it will drive the tow frame to move closer to the bottom of the arm, thereby abutting against the bottom of the arm, preventing the arm from shaking or shifting during the lifting process. This improves the stability and accuracy of the lifting, as well as the benefits of distributing the lifting force and reducing the pressure on the arm and related components. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a front view structural diagram of the active component of this utility model;

[0019] Figure 4 This is a front view structural diagram of the fixing component of this utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the telescopic rod of this utility model.

[0021] In the diagram: 1. Frame; 2. Hydraulic rod; 3. Support block; 4. Arm; 5. Fixed assembly; 51. Slide rod; 52. Rack; 53. Gear II; 54. Trailer; 55. Telescopic rod; 56. Fixed spring; 6. Movable assembly; 61. Shaft; 62. Threaded rod; 63. Slide plate; 64. Fixed block; 65. Movable rod; 66. Sliding block; 67. Insert rod; 68. Gear I; 10. Slide groove; 30. Groove; 610. Arc groove. Detailed Implementation

[0022] like Figures 1-5As shown, this utility model provides a technical solution: a lifting arm with a self-locking structure, including a frame 1, a hydraulic rod 2 fixedly installed on the top of the frame 1. By placing an object at the bottom of the arm 4, the hydraulic rod 2 is activated to drive the support block 3 to slide upward inside the frame 1. When the support block 3 slides upward, it will drive the arm 4 to move upward, thereby lifting the object. When the hydraulic rod 2 stops, it can self-lock the arm 4 during lifting. The support block 3 is fixedly installed on the surface of the hydraulic rod 2, and the arm 4 is hinged inside the support block 3. The surface of the frame 1 is provided with a fixed component 5 and a movable component 6 for improving the lifting stability of the arm 4. The movable component 6 includes: a rotating shaft 61, a threaded rod 62, a sliding plate 63, a fixed block 64, a movable rod 65, a sliding block 66, and a plug rod 67.

[0023] The rotating shaft 61 is rotatably connected to the surface of the hydraulic rod 2. When the slide rod 51 moves upward to the top of the slide groove 10 opened in the frame 1, the frame 1 will abut against the slide rod 51, thereby causing the slide rod 51 to slide downward in the arc groove 610 opened in the surface of the rotating shaft 61. A threaded rod 62 is fixedly installed at the bottom of the rotating shaft 61. A sliding plate 63 is threadedly connected to the surface of the threaded rod 62. The sliding plate 63 is slidably connected to the inner wall of the frame 1. A fixing block 64 is fixedly installed at the bottom of the sliding plate 63. When the fixing block 64 slides downward, it will cause the movable rod 65 hinged at the bottom to expand to both sides. When the movable rod 65 expands, the sliding block 66 hinged at the bottom of the movable rod 65 will move closer to the arm inside the support block 3. The surface of the arm 4 is movable. A movable rod 65 is hinged to the inside of the fixed block 64. A sliding block 66 is hinged to the bottom of the movable rod 65. The sliding block 66 is slidably connected to the inside of the support block 3. An insert rod 67 is fixedly installed on the outside of the sliding block 66. A gear 68 is rotatably connected to the inside of the support block 3. The gear 68 is fixedly installed on the surface of the arm 4. When the sliding block 66 slides, it will drive the insert rod 67 to slide in the same direction as the sliding block 66, so that the insert rod 67 is inserted into the surface of the gear 68 to restrict it. This prevents the arm 4 from expanding due to equipment aging during long-term lifting, which could cause the lifted object to slip accidentally. This enhances the reliability and safety of the lifting arm during use.

[0024] The fixed assembly 5 includes: a slide rod 51, which is slidably connected to the surface of the rotating shaft 61 and passes through the frame 1. A rack 52 is fixedly installed at the bottom of the slide rod 51. When the slide rod 51 slides upward, it drives the rack 52 to slide upward. When the rack 52 slides upward, it drives the outer meshing gear 53 to rotate. The outer meshing gear 53 is rotatably connected to the outer wall of the frame 1. A bracket 54 is fixedly installed on the outer side of the gear 53. One end of a telescopic rod 55 is fixedly installed at the bottom of the slide rod 51, and the other end of the telescopic rod 55 is fixedly installed on the top of the slide plate 63. A bracket 54 is fixedly installed inside the telescopic rod 55. The fixed spring 56, when the gear 2 53 rotates, will drive the bracket 54 to move closer to the bottom of the arm 4, thereby abutting against the bottom of the arm 4, preventing the arm 4 from shaking or shifting during the lifting process, which has the benefits of improving the stability and accuracy of the lifting, as well as dispersing the lifting force and reducing the pressure on the arm 4 and related components. The outer side of the frame 1 is provided with a sliding groove 10, which can drive the sliding rod 51 to slide inside the frame 1. The top of the support block 3 is provided with a groove 30, which can drive the movable rod 65 to move inside the support block 3. The surface of the rotating shaft 61 is provided with an arc groove 610, which can drive the rotation of the rotating shaft 61 by sliding the sliding rod 51.

[0025] When the lifting arm is in use, an object can be placed at the bottom of the arm 4. Activating the hydraulic rod 2 causes the support block 3 to slide upwards inside the frame 1. As the support block 3 slides upwards, it moves the arm 4 upwards, thus lifting the object. Simultaneously, the upward movement of the support block 3 also causes the rotating shaft 61 and the sliding rod 51 to slide upwards. When the sliding rod 51 reaches the top of the groove 10 on the frame 1, the frame 1 abuts against it, causing the sliding rod 51 to slide downwards through the arc-shaped groove 610 on the surface of the rotating shaft 61. This downward movement of the sliding rod 51 causes the rotating shaft 61 to rotate, which in turn rotates the threaded rod 62 at the bottom. When the threaded rod 62 rotates, it causes the slide plate 63 and the fixed block 64 to slide downwards. When the fixed block 64 slides downwards, it causes the movable rod 65, which is hinged at the bottom, to expand to both sides. When the movable rod 65 expands, the sliding block 66, which is hinged at the bottom of the movable rod 65, moves inside the support block 3 towards the surface of the arm 4. When the sliding block 66 slides, it causes the insertion rod 67 to slide in the same direction as the sliding block 66, so that the insertion rod 67 is inserted into the surface of the gear 68 for restriction. This prevents the arm 4 from expanding due to equipment aging during long-term lifting, which could cause the lifted object to slip accidentally. This enhances the reliability and safety of the lifting arm during use.

[0026] When the slide bar 51 slides upward, it drives the rack 52 to slide upward. When the rack 52 slides upward, it drives the outer meshing gear 53 to rotate. When the gear 53 rotates, it drives the trailer 54 to move closer to the bottom of the arm 4, thereby abutting against the bottom of the arm 4. This prevents the arm 4 from shaking or shifting during the lifting process, thus improving the stability and accuracy of the lifting, dispersing the lifting force, and reducing the pressure on the arm 4 and related components.

[0027] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A lifting arm with a self-locking structure, comprising a frame (1), characterized in that: A hydraulic rod (2) is fixedly installed on the top of the frame (1). A support block (3) is fixedly installed on the surface of the hydraulic rod (2). An arm (4) is hinged inside the support block (3). A fixed component (5) and a movable component (6) for improving the lifting stability of the arm (4) are provided on the surface of the frame (1). The movable component (6) includes: a rotating shaft (61), which is rotatably connected to the surface of the hydraulic rod (2). A threaded rod (62) is fixedly installed at the bottom of the rotating shaft (61). A sliding plate (63) is threadedly connected to the surface of the threaded rod (62). The sliding plate (63) is slidably connected to the inner wall of the frame (1).

2. A lifting arm with a self-locking structure according to claim 1, characterized in that: A fixed block (64) is fixedly installed at the bottom of the slide plate (63). A movable rod (65) is hinged to the inside of the fixed block (64). A sliding block (66) is hinged to the bottom of the movable rod (65). The sliding block (66) is slidably connected to the inside of the support block (3). A plug rod (67) is fixedly installed on the outside of the sliding block (66).

3. A lifting arm with a self-locking structure according to claim 1, characterized in that: The inner side of the support block (3) is rotatably connected to a gear (68), which is fixedly installed on the surface of the arm (4).

4. A lifting arm with a self-locking structure according to claim 1, characterized in that: The fixing component (5) includes: a slide rod (51), which is slidably connected to the surface of the rotating shaft (61), the slide rod (51) passes through the frame (1), and a rack (52) is fixedly installed at the bottom of the slide rod (51).

5. A lifting arm with a self-locking structure according to claim 4, characterized in that: The rack (52) is meshed with a second gear (53) on its outer side. The second gear (53) is rotatably connected to the outer wall of the frame (1). A bracket (54) is fixedly installed on the outer side of the second gear (53).

6. A lifting arm with a self-locking structure according to claim 5, characterized in that: One end of a telescopic rod (55) is fixedly installed at the bottom of the slide rod (51), and the other end of the telescopic rod (55) is fixedly installed at the top of the slide plate (63). A fixing spring (56) is fixedly installed inside the telescopic rod (55).

7. A lifting arm with a self-locking structure according to claim 1, characterized in that: The frame (1) has a sliding groove (10) on its outer side, the support block (3) has a groove (30) on its top, and the rotating shaft (61) has an arc groove (610) on its surface.

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