A staggered peak slide type automatic hooking and unhooking hoisting device

Abstract

The application discloses a staggered peak slide type automatic hooking and unhooking hoisting device, which comprises a lifting lug and a base; the lifting lug and the base are respectively arranged on the upper beam body and the lower beam body of a hoisting spreader; a swing rod assembly is hingedly arranged at the bottom of the lifting lug; a plurality of staggered peak slides are arranged in the base, and the bottom end of the swing rod assembly is detachably connected with the staggered peak slides; a one-way switch plate assembly is rotatably arranged on one side of the inner wall of the staggered peak slide; the top point of the inner top wall of the staggered peak slide is located directly below the swing rod assembly, and the top point of the inner bottom wall is arranged on the side away from the one-way switch plate assembly; the top surface of the base is arranged to be inclined, and the high end of the top surface of the base is located on the same side as the one-way switch plate assembly. The application is applied to the opening and closing action of the hoisting spreader, can realize automatic hooking and unhooking, effectively avoids the opening of the hook in the air in the closed state, improves the safety and reliability of hoisting, and has the advantages of simple structure, easy manufacturing and maintenance.

Description

Technical Field

[0001] This invention relates to the field of sling manufacturing technology, and in particular to a staggered-peak sliding type automatic hook-and-unhooking lifting device. Background Technology

[0002] With the rapid development of the lifting sling industry, the variety of lifting slings is increasing, and the demand for automating lifting operations is growing. The opening and closing device is a key component for realizing the opening and closing actions of lifting slings, especially metallurgical slings.

[0003] Existing rotary lock opening and closing devices, while capable of opening and closing, are complex in structure, difficult to manufacture, and costly to maintain. Furthermore, they have a high probability of not rotating fully during operation, leading to mid-air locking failure and sudden opening, posing a safety hazard during hoisting. Therefore, there is an urgent need for an automatic hook-and-unhook lifting device that is simple in structure, easy to manufacture, and highly safe. Summary of the Invention

[0004] The purpose of this invention is to provide a staggered-peak sliding automatic hook-and-unhook lifting device, which aims to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a staggered peak sliding type automatic hook unhooking lifting device, including a lifting lug and a base; the lifting lug and the base are respectively installed on the upper beam and lower beam of the lifting device;

[0006] The bottom of the lifting lug is hinged to a swing arm assembly; the base is provided with several staggered slides, and the bottom end of the swing arm assembly is detachably connected to several of the staggered slides;

[0007] One side of the inner wall of the staggered peak slide is rotatably connected to a one-way paddle assembly; the top apex of the inner top wall of the staggered peak slide is located directly below the swing arm assembly, and the top apex of the inner bottom wall is located on the side away from the one-way paddle assembly; the top surface of the base is inclined, and the high end of the top surface of the base is on the same side as the one-way paddle assembly.

[0008] Preferably, the base includes a base plate mounted on the lower beam of the lifting device, and two spaced supports are fixedly connected to the base plate; the top surfaces of the two supports are inclined, and the high end of the top surface of the supports is on the same side as the one-way lever assembly;

[0009] The staggered peak slide is provided in two sets, with the two staggered peak slides respectively opened on the end faces of the two supports on opposite sides; the bottom ends of the swing arm assembly are detachably connected to the two staggered peak slides.

[0010] Preferably, the swing arm assembly includes a swing arm and a locking shaft; the top of the swing arm is hinged to the bottom of the lifting lug; the apex of the inner top wall of the staggered peak slide is located directly below the locking shaft; the swing arm is detachably connected to the side walls of the two supports opposite to each other.

[0011] The bottom of the swing arm has an installation through hole, the locking shaft is fixed in the installation through hole, and both ends of the locking shaft extend out of the swing arm; the two ends of the locking shaft are detachably connected to the two staggered peak slides respectively.

[0012] Preferably, the one-way paddle assembly includes a one-way paddle, which is rotatably connected to one side of the inner top wall of the staggered peak slide via a pin, and the one-way paddle and the top end of the support are located on the same side.

[0013] The bottom of the one-way lever is detachably connected to the bottom wall of the staggered peak slide near the pin; the top of the inner bottom wall of the staggered peak slide is located on the side of the inner top wall away from the one-way lever.

[0014] Preferably, a plurality of reinforcing ribs are fixedly connected to the base plate, and the reinforcing ribs are fixedly connected to the opposite end faces of the two supports.

[0015] Preferably, the swing arm and the lifting lug are rotatably connected by a lifting shaft.

[0016] Preferably, the bottom dimension of the swing arm is larger than the top dimension of the swing arm.

[0017] Preferably, the included angle of the inner top wall of the staggered peak slide is greater than the included angle of the inner bottom wall of the staggered peak slide.

[0018] The present invention discloses the following technical effects:

[0019] In this invention, when the hook is engaged, the upper beam of the lifting device moves vertically downward relative to the lower beam, causing the bottom of the swing arm assembly to slide downward on the inclined surface of the base to the entrance of the staggered slide. At this point, the upper beam of the lifting device begins to move upward. Due to the gravity of the swing arm assembly, the bottom of the swing arm assembly slides into the base and along several staggered slides. When the swing arm assembly slides upward to the top of the inner wall of the staggered slide, the hook locking action is completed. At this time, the base, driven by the swing arm assembly, moves upward together with the upper beam of the lifting device.

[0020] After the hook locking action is completed, the upper beam of the lifting device moves downward relative to the lower beam. Since the top apex of the inner wall of the staggered peak slide is located on the side away from the one-way lever assembly, the bottom of the swing arm assembly slides along the staggered peak slide to the side of the one-way lever assembly; and then slides along the one-way lever assembly along the staggered peak slide. After sliding out, the one-way lever assembly rotates back to its original position due to gravity, thus sealing the end of the staggered peak slide. At this time, the upper beam of the lifting device stops moving downward and starts moving upward. The bottom of the swing arm assembly slides along the side wall of the base and finally disengages from the base, completing the hook unlocking action. The bottom of the swing arm assembly returns to its initial vertical state under the action of gravity. Thus, a complete hook locking and hook unlocking action is completed, thereby realizing the opening and closing action of the lifting device.

[0021] This invention utilizes the automatic resetting and centering characteristic of the swing arm assembly under the action of gravity and friction, using the swing arm assembly as a hook. The guiding effect of the inclined surface at the top of the base and the staggered sliding track ensures that the bottom of the swing arm assembly moves in a regular, cyclical manner along a predetermined track. There is no uncertainty in the hook's movement, eliminating the phenomenon of the hook opening in mid-air while locked, thus ensuring the safety of lifting operations. It also enables automatic hook release, is safe and reliable, has a simple structure, and reduces manufacturing and maintenance costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the off-peak sliding automatic hook unhooking lifting device of the present invention;

[0024] Figure 2 This is a side view of the present invention;

[0025] Figure 3 This is a schematic diagram of the hook release process of the present invention;

[0026] Figure 4 The graph shows the trigonometric wave function curve.

[0027] Figure 5 The graph shows two segments of the trigonometric wave function.

[0028] Figure 6 To optimize the trigonometric wave function curve;

[0029] Among them, 1. Lifting lug; 2. Lifting shaft; 3. Swing rod; 4. Locking shaft; 5. Base; 6. Pin; 7. One-way lever; 51. Base plate; 52. Support; 53. Reinforcing rib; 54. Off-peak slide. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figure 1-6 The present invention provides an automatic hook-and-unhook lifting device with a staggered peak sliding track, including a lifting lug 1 and a base 5; the lifting lug 1 and the base 5 are respectively installed on the upper beam and the lower beam of the lifting device (not shown in the figure); the lifting device can drive the upper beam to perform lifting and lowering operations relative to the lower beam.

[0033] The bottom of the lifting lug 1 is hinged to a swing rod assembly; the base 5 has several staggered peak slides 54, the bottom end of the swing rod assembly slides into the base 5 and is detachably connected to the several staggered peak slides 54; when the bottom of the swing rod assembly extends into the staggered peak slide 54, it slides into the inner wall of the staggered peak slide 54.

[0034] A one-way lever assembly is rotatably connected to one side of the inner wall of the staggered peak slide 54. This one-way lever assembly acts as a check valve, allowing the bottom of the swing arm assembly to move unidirectionally in a specific direction. The apex of the inner top wall of the staggered peak slide 54 is directly below the swing arm assembly, while the apex of the inner bottom wall is located on the side furthest from the one-way lever assembly. The top surface of the base 5 is inclined, and the high end of the top surface of the base 5 is on the same side as the one-way lever assembly. The apex of the inner top wall of the staggered peak slide 54 smoothly transitions to both ends, and the apex of the inner bottom wall smoothly transitions to both sections. This design utilizes the characteristic of the swing arm assembly to automatically reset and center under gravity and friction, using the swing arm assembly as a hook. The guiding effect of the inclined top surface of the base 5 and the staggered peak slide 54 ensures that the bottom of the swing arm assembly moves in a regular, cyclical manner along a predetermined track. There is no uncertainty in the hook's movement, eliminating the phenomenon of the hook opening in mid-air while locked, thus ensuring the safety of lifting operations. Automatic hook release is possible, making it safe, reliable, simple in structure, and reducing manufacturing and maintenance costs.

[0035] When the hook is engaged, the upper beam of the lifting device moves vertically downward relative to the lower beam, causing the bottom of the swing arm assembly to slide downward on the inclined surface of the base 5 to the entrance of the staggered slide 54. At this time, the upper beam of the lifting device then moves upward. Due to the gravity of the swing arm assembly, the bottom of the swing arm assembly slides into the base 5 and slides along several staggered slides 54. When the swing arm assembly slides upward to the top of the inner wall of the staggered slide 54, the hook locking action is completed. At this time, the base 5 moves upward together with the upper beam of the lifting device under the action of the swing arm assembly.

[0036] After the hook locking action is completed, the upper beam of the lifting device moves downward relative to the lower beam. Since the top apex of the inner wall of the staggered peak slide 54 is located on the side away from the one-way lever assembly, the bottom of the swing arm assembly slides along the staggered peak slide 54 to the side of the one-way lever assembly; and then slides along the one-way lever assembly along the staggered peak slide 54. After sliding out, the one-way lever assembly rotates back to its original position due to gravity, thus sealing the end of the staggered peak slide 54. At this time, the upper beam of the lifting device stops moving downward and starts moving upward; the bottom of the swing arm assembly slides along the side wall of the base 5, and finally disengages from the base 5, completing the hook unlocking action. The bottom of the swing arm assembly returns to its initial vertical state under the action of gravity. Thus, a complete hook locking and hook unlocking action is completed, thereby realizing the opening and closing action of the lifting device.

[0037] The design is further optimized. The base 5 includes a base plate 51 installed on the lower beam of the lifting device. Two spaced supports 52 are fixedly connected to the base plate 51. The top surfaces of the two supports 52 are inclined, and the high end of the top surface of the supports 52 is on the same side as the one-way lever assembly.

[0038] Two sets of staggered peak flow channels 54 are provided, with each set located on the opposite end face of one of the two supports 52. The bottom end of the swing arm assembly slides into the space between the two supports 52, and both ends of the bottom of the swing arm assembly are detachably connected to the two staggered peak flow channels 54. When the bottom of the swing arm assembly extends into the staggered peak flow channel 54, it slides into the inner wall of the staggered peak flow channel 54. With this configuration, the bottom of the swing arm assembly is guided along the top slope of the support 52 to the entrance of the two staggered peak flow channels 54 (the side away from the one-way lever assembly). Under the lifting action of the lifting device, the bottom ends of the swing arm assembly slide along the two staggered peak flow channels 54 on both sides, achieving hooking and unhooking.

[0039] The scheme is further optimized. The swing arm assembly includes a swing arm 3 and a locking shaft 4. The top of the swing arm 3 is hinged to the bottom of the lifting lug 1. The swing arm 3 and the lifting lug 1 are rotatably connected by the lifting shaft 2. The top of the inner top wall of the staggered peak slide 54 is located directly below the locking shaft 4. The swing arm 3 is detachably connected to the side walls of the two supports 52. When the swing arm 3 moves downward under the action of the lifting device, it can slide between the two supports 52.

[0040] The bottom of the swing arm 3 has a mounting through hole, and the locking shaft 4 is fixed in the mounting through hole, with both ends of the locking shaft 4 extending out of the swing arm 3. The two ends of the locking shaft 4 are detachably connected to the two staggered peak slides 54 respectively. When the locking shaft 4 is inserted into the staggered peak slide 54, it slides against the inner wall of the staggered peak slide 54. The bottom dimension of the swing arm 3 is larger than the top dimension of the swing arm 3. This increases the weight at the bottom of the swing arm 3, allowing the swing arm 3 to maintain a natural vertical state under the action of gravity. With this configuration, the two ends of the locking shaft 4 are driven by the swing arm 3 to slide into the two staggered peak slides 54 respectively, thereby realizing the hooking and unhooking functions.

[0041] The scheme is further optimized. The one-way paddle assembly includes a one-way paddle 7. The one-way paddle 7 is rotatably connected to one side of the inner top wall of the staggered peak slide 54 via a pin 6, and the one-way paddle 7 and the top high end of the support 52 are located on the same side.

[0042] The bottom of the one-way lever 7 is detachably connected to the bottom wall of the staggered peak slide 54 near the pin 6. When the one-way lever 7 is in its natural vertical state, the bottom of the one-way lever 7 contacts the inner bottom wall of the staggered peak slide 54. The apex of the inner bottom wall of the staggered peak slide 54 is located on the side of the inner top wall apex away from the one-way lever 7. With this configuration, the one-way lever 7 can only be folded along the pin 6 to the side away from the staggered peak slide 54. Under no external force, the one-way lever 7 is folded by its own weight. When the force is applied, the device returns to a vertical position. At this time, the bottom of the one-way lever 7 contacts the bottom wall of the staggered peak slide 54. Since the horizontal height of the inner bottom wall end of the staggered peak slide 54 is lower than the top position, the one-way lever 7 cannot be flipped into the staggered peak slide 54 to block the outlet of the staggered peak slide 54, which facilitates the locking shaft 4 and the swing rod 3 to slide out along the outer wall of the support 52. The one-way lever 7 is used to ensure that the swing rod 3 slides in one direction, ensuring that the unhooking action is effectively completed and preventing the unhooking failure.

[0043] Further optimization of the design involves fixing several reinforcing ribs 53 to the base plate 51. The reinforcing ribs 53 are fixed to the opposite end faces of the two supports 52 to enhance the connection strength of the supports 52 and improve the service life of the supports 52.

[0044] Further optimization of the scheme: the included angle of the inner top wall of the staggered peak slide 54 is greater than the included angle of the inner bottom wall of the staggered peak slide 54.

[0045] Working principle:

[0046] Principle 1: Reference Figure 4 The trigonometric wave function curve y = akx + b (divided into several intervals) is a piecewise curve with a triangular shape and fluctuates regularly. When two trigonometric wave function curves are in opposite directions, with a certain offset in horizontal and vertical phase,

[0047] The vertical distance between two triangular wave function curves increases and decreases systematically, forming a channel with staggered peaks and troughs. If we consider this special channel as a fixed, smooth track, and place a smooth sphere (its diameter is smaller than the minimum distance between the two curves) within it, and apply a periodically changing, vertical force F to the sphere (while maintaining a neutral horizontal force), the sphere will repeatedly move up and down due to the sloping track formed by the two curves, resulting in horizontal displacement of the sphere.

[0048] Assuming a smooth sphere is placed at a trough E, and an upward force F+ is continuously applied, the sphere displaces onto line segment AB. The inclined plane AB exerts a horizontal force Fa on the sphere. Under the combined action of the upward force F+ and the horizontal force Fa, the sphere moves to a crest B. Changing the direction of the force, a downward force F- is continuously applied, displacing the sphere onto line segment FG. The inclined plane FG exerts a horizontal force Fb on the sphere. Under the combined action of the upward force F- and the horizontal force Fb, the sphere moves to a trough G. The smooth sphere completes one movement cycle. When the above steps are repeated with the application of forces F+ and F-, the sphere completes the next movement cycle. The sphere's movement direction can only be from A to C, i.e., along the X-axis. The smooth sphere slides within a special inclined plane track formed by two staggered triangular wave function curves, and its direction is fixed.

[0049] Reference Figure 5-6 In this embodiment, only one moving cycle is captured, and the staggered peak sliding track 54 is optimized. The first triangular wave function is defined as:

[0050]

[0051] Define the second trigonometric wave function as

[0052]

[0053] Principle 2: Pendulum principle. The pendulum rod 3 can be regarded as a pendulum. When the pendulum rod 3 is subjected to a horizontal pushing force, the pendulum rod 3 swings in the direction of the pushing force. When the horizontal pushing force is removed, the pendulum rod 3 returns to the vertical center under the action of gravity.

[0054] In this embodiment, principle one and principle two are combined. By utilizing the principle of automatic centering due to gravity and braking due to friction, the locking shaft 4 on the swing arm 3 moves along the predetermined track through the guiding action of the top inclined surface of the support 52 and the staggered slide 54, so as to achieve the requirements of different states and complete the hook locking and unlocking actions.

[0055] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0056] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A staggered-peak sliding automatic hook-and-unhook lifting device, comprising a lifting lug (1) and a base (5); the lifting lug (1) and the base (5) are respectively installed on the upper beam and lower beam of the lifting device; characterized in that: The bottom of the lifting lug (1) is hinged with a swing rod assembly; the base (5) has several staggered slides (54) inside, and the bottom end of the swing rod assembly is detachably connected to several staggered slides (54); One-way paddle assembly is rotatably connected to one side of the inner wall of the staggered peak slide (54); the top of the inner top wall of the staggered peak slide (54) is located directly below the swing arm assembly, and the top of the inner bottom wall is located on the side away from the one-way paddle assembly; the top surface of the base (5) is inclined, and the high end of the top surface of the base (5) is on the same side as the one-way paddle assembly. The base (5) includes a base plate (51) installed on the lower beam of the lifting device, and two spaced supports (52) are fixedly connected to the base plate (51); the top surfaces of the two supports (52) are inclined, and the high end of the top surface of the supports (52) is on the same side as the one-way lever assembly. The one-way paddle assembly includes a one-way paddle (7), which is rotatably connected to one side of the inner top wall of the staggered peak slide (54) via a pin (6), and the one-way paddle (7) and the top end of the support (52) are located on the same side. The bottom of the one-way lever (7) is detachably connected to the bottom wall of the staggered peak slide (54) near the pin (6); the top of the bottom wall of the staggered peak slide (54) is located on the side of the top of the inner top wall away from the one-way lever (7).

2. The off-peak sliding automatic hook unhooking lifting device according to claim 1, characterized in that: The staggered peak slide (54) is provided in two sets, and the two staggered peak slides (54) are respectively opened on the end faces of the two supports (52) on opposite sides; the bottom ends of the swing rod assembly are detachably connected to the two staggered peak slides (54).

3. The off-peak sliding automatic hook unhooking lifting device according to claim 2, characterized in that: The swing arm assembly includes a swing arm (3) and a locking shaft (4); the top of the swing arm (3) is hinged to the bottom of the lug (1); the top of the inner top wall of the staggered peak slide (54) is located directly below the locking shaft (4); the swing arm (3) is detachably connected to the side walls opposite to the two supports (52); The bottom of the swing rod (3) is provided with an installation through hole, the locking shaft (4) is fixed in the installation through hole, and both ends of the locking shaft (4) extend out of the swing rod (3); the two ends of the locking shaft (4) are respectively detachably connected to the two staggered peak slides (54).

4. The off-peak sliding automatic hook unhooking lifting device according to claim 2, characterized in that: A number of reinforcing ribs (53) are fixedly connected to the base plate (51), and the reinforcing ribs (53) are fixedly connected to the opposite end faces of the two supports (52).

5. The off-peak sliding automatic hook-and-unhook lifting device according to claim 3, characterized in that: The swing arm (3) and the lug (1) are rotatably connected by the lifting shaft (2).

6. The off-peak sliding automatic hook unhooking lifting device according to claim 1, characterized in that: The bottom dimension of the swing arm (3) is larger than the top dimension of the swing arm (3).

7. The off-peak sliding automatic hook unhooking lifting device according to claim 1, characterized in that: The included angle of the inner top wall of the staggered peak slide (54) is greater than the included angle of the inner bottom wall of the staggered peak slide (54).

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