Balanced lifting device for logistics transportation

Abstract

This utility model discloses a balancing lifting device for logistics transportation, belonging to the field of logistics transportation technology. The balancing lifting device includes a lifting frame, with fixed seats installed at both the front and rear ends of the lifting frame. Double-acting hydraulic cylinders are installed on both sides of the lower end of the lifting frame. A connecting seat is installed at the lower end of the sliding seat, and a weighing sensor is installed inside the connecting seat. This utility model solves the problem that existing lifting devices for logistics transportation tend to tilt at the four corners when transporting large packages, leading to unstable cargo position and affecting handling efficiency. This utility model adjusts the position of the lower sliding seat using double-acting hydraulic cylinders. The core function of the double-acting hydraulic cylinders is to change the effective length of the steel wire ropes on both sides, redistributing the tension of the steel wire ropes on both sides, so that the resultant force line is aligned with the center of gravity again, thereby achieving balance. The structure is simple, easy to adjust, effectively avoids tilting, and improves positional stability.

Description

Technical Field

[0001] This utility model relates to the field of logistics and transportation technology, specifically to a balancing hoisting device for logistics and transportation. Background Technology

[0002] In short-distance logistics transportation, lifting equipment is often used to move large packages over short distances. Lifting equipment for logistics transportation is a core piece of equipment for precise handling and stable hoisting of goods, and is widely used in ports, warehousing, manufacturing and other scenarios.

[0003] Chinese Patent CN221876370U discloses a lifting device for logistics transportation, belonging to the field of logistics transportation technology. It includes four outriggers, with two outriggers on the same side connected to a mounting frame at their top ends. This lifting device drives two rotating rods to rotate synchronously via a synchronization component. The rotating rods then tighten the connecting rope, thereby pulling up the tie rod. The tie rod engages with a slot on the fixed plate, thus assisting in the mounting. Compared to existing devices, this avoids the problem of limited lifting height due to the fixed length of the wire rope, improving lifting efficiency.

[0004] In actual use, the lifting device for logistics transportation described in the above patent tends to tilt at the four corners when transporting large packages, resulting in unstable cargo position and affecting handling efficiency. Therefore, it does not meet the existing requirements. In response, we have proposed a balanced lifting device for logistics transportation. Utility Model Content

[0005] The purpose of this utility model is to provide a balancing hoisting device for logistics transportation, which solves the problem mentioned in the background art that the hoisting device for logistics transportation is prone to tilting at the four corners when transporting large-volume packages, resulting in unstable cargo position and affecting the handling effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a balancing hoisting device for logistics transportation, comprising a hoisting frame, with fixed seats installed at both the front and rear ends of the hoisting frame, sliding seats provided on both sides below the fixed seats, a wire rope provided between the sliding seats and the fixed seats, and double-acting hydraulic cylinders installed on both sides of the lower end of the hoisting frame, the two ends of the double-acting hydraulic cylinders being hinged to the hoisting frame and the sliding seats respectively, a connecting seat being installed at the lower end of the sliding seats, and a weighing sensor being installed inside the connecting seat.

[0007] Preferably, a mounting plate is welded to the lower end of the hoisting frame, and a hydraulic pump is connected to the lower end of the mounting plate by fixing bolts. The hydraulic pump is sealed to a double-acting hydraulic cylinder.

[0008] Preferably, a fixed pulley is rotatably connected inside the fixed seat via a bearing, and a movable pulley is rotatably connected inside the sliding seat via a bearing. The wire rope rests on the upper surface of the fixed pulley and is slidably connected to the fixed pulley, and both ends of the wire rope are rotatably connected to the movable pulley.

[0009] Preferably, guide plates are installed on the outside of the two sliding seats, and the inner wall of the guide plate is provided with an integrally formed guide rail groove. The sliding seats are slidably connected to the guide plates through the guide rail groove.

[0010] Preferably, a lifting lug is installed below the connecting seat, and the lifting lug is connected to the bottom end of the connecting seat by a chain.

[0011] Preferably, the two ends of the weighing sensor are fixedly connected to the connecting seat and the sliding seat respectively, and a retainer is installed inside the connecting seat, which is in contact with the bottom of the weighing sensor.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The lifting frame of this utility model connects the four corners of the cargo with four lifting lugs, and is lifted by a crane. During the lifting process, the weight pulled by each connecting seat is detected by a weighing sensor. The hydraulic pump is adjusted according to the weight. When the load tilts or the center of gravity shifts, the position of the lower sliding seat is adjusted by a double-acting hydraulic cylinder. The core function of the double-acting hydraulic cylinder is to change the effective length of the steel wire ropes on both sides. If the load tilts to the left, the left double-acting hydraulic cylinder shortens, pulling the left movable pulley to the left, shortening the effective rope segment of the left steel wire rope, increasing the tension of the left steel wire rope, and increasing the tension on the lower left side of the lifting frame. The right double-acting hydraulic cylinder extends, pushing the right movable pulley to the right, lengthening the effective rope segment of the right steel wire rope, and reducing the tension of the right steel wire rope, thereby reducing the tension on the right side. Conversely, if the load tilts to the right, the left double-acting hydraulic cylinder extends and the right double-acting hydraulic cylinder shortens, which can redistribute the tension of the steel wire ropes on both sides, so that the resultant force line is aligned with the center of gravity again, thereby achieving balance. The structure is simple, the adjustment is convenient, it effectively avoids tilting, and improves positional stability.

[0014] 2. This utility model ensures that when the double-acting hydraulic cylinder pushes, the moving pulley can only move horizontally along the guide rail groove and will not move up and down or rotate, thus preventing the wire rope from derailing due to the deviation of the moving pulley. The double-acting hydraulic cylinder can supply oil in both directions, and can push and pull. Compared with the single-acting hydraulic cylinder, the adjustment speed is faster and the tension control is more precise. Attached Figure Description

[0015] Figure 1 This is an axonometric view of the front view of this utility model;

[0016] Figure 2This utility model Figure 1 Enlarged view of a portion of area A in the middle;

[0017] Figure 3 This is an axonometric view of the side of this utility model;

[0018] Figure 4 This is an axonometric view of the present invention viewed from below.

[0019] In the diagram: 1. Lifting frame; 101. Mounting plate; 2. Fixed seat; 201. Fixed pulley; 3. Wire rope; 4. Sliding seat; 401. Moving pulley; 5. Double-acting hydraulic cylinder; 501. Hydraulic pump; 6. Guide plate; 601. Guide rail groove; 7. Lifting lug; 701. Chain; 702. Connecting seat; 703. Weighing sensor; 704. Cage. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To address the issue of existing lifting equipment in logistics transportation tilting at the four corners during the transport of large packages, leading to unstable cargo positioning and affecting handling efficiency, please refer to... Figure 1 - Figure 4 This embodiment provides the following technical solution:

[0022] The logistics transportation balancing hoisting device of this embodiment includes a hoisting frame 1. The front and rear ends of the hoisting frame 1 are equipped with fixed seats 2. Sliding seats 4 are provided on both sides below the fixed seats 2. A wire rope 3 is provided between the sliding seats 4 and the fixed seats 2. Double-acting hydraulic cylinders 5 are installed on both sides of the lower end of the hoisting frame 1. The two ends of the double-acting hydraulic cylinders 5 are respectively hinged to the hoisting frame 1 and the sliding seats 4. A connecting seat 702 is installed at the lower end of the sliding seat 4. A weighing sensor 703 is installed inside the connecting seat 702. The hoisting frame 1 is lifted by connecting the four lifting lugs 7 to the four corners of the goods by a crane.

[0023] In fact, the fixed seat 2 is rotatably connected to the fixed pulley 201 through a bearing, and the sliding seat 4 is rotatably connected to the movable pulley 401 through a bearing. The steel wire rope 3 rests on the upper surface of the fixed pulley 201 and is slidably connected to the fixed pulley 201. Both ends of the steel wire rope 3 are rotatably connected to the movable pulley 401. The movement of the movable pulley 401 can redistribute the tension of the steel wire ropes 3 on both sides, so that the resultant force line is aligned with the center of gravity again, thereby achieving balance. The structure is simple, the adjustment is convenient, and it effectively avoids tilting and improves positional stability.

[0024] In addition, the two ends of the load cell 703 are fixedly connected to the connecting seat 702 and the sliding seat 4 respectively. The connecting seat 702 has a retainer 704 installed inside. The retainer 704 is abutted and connected to the bottom of the load cell 703. During the lifting process, the load cell 703 detects the weight pulled by each connecting seat 702. According to the weight, the double-acting hydraulic cylinder 5 is adjusted to change the effective length of the steel wire ropes 3 on both sides.

[0025] Specifically, the lifting frame 1 connects the four corners of the cargo to the four lifting lugs 7 and lifts it using a crane. During the lifting process, the load cell 703 detects the weight pulled by each connecting seat 702. Based on the weight, the hydraulic pump 501 is adjusted. When the load tilts or the center of gravity shifts, the position of the lower sliding seat 4 is adjusted by the double-acting hydraulic cylinder 5. The core function of the double-acting hydraulic cylinder 5 is to change the effective length of the wire ropes 3 on both sides. If the load tilts to the left, the left double-acting hydraulic cylinder 5 shortens, pulling the left movable pulley 401 to move to the left, thus reducing the effective length of the left wire rope 3. When the load is shortened, the tension of the left wire rope 3 increases, increasing the pulling force on the lower left side of the hoisting frame 1. The right double-acting hydraulic cylinder 5 extends, pushing the right movable pulley 401 to move to the right. The effective rope section of the right wire rope 3 becomes longer, and the tension of the right wire rope 3 decreases, thereby reducing the pulling force on the right side. Conversely, if the load tilts to the right, the left double-acting hydraulic cylinder 5 extends and the right double-acting hydraulic cylinder 5 shortens, which can redistribute the pulling force of the wire ropes 3 on both sides, allowing the resultant force line to be aligned with the center of gravity again, thereby achieving balance. The structure is simple, the adjustment is convenient, it effectively avoids tilting, and improves positional stability.

[0026] To address the issue of poor structural stability and inability to meet control requirements in existing hoisting equipment used in logistics transportation during practical application, please refer to... Figure 1 - Figure 4 This embodiment provides the following technical solution:

[0027] In this embodiment, a mounting plate 101 is welded to the lower end of the hoisting frame 1. A hydraulic pump 501 is connected to the lower end of the mounting plate 101 by fixing bolts. The hydraulic pump 501 is sealed to a double-acting hydraulic cylinder 5. The double-acting hydraulic cylinder 5 can supply oil in both directions, and can push and pull. Compared with a single-acting hydraulic cylinder, it has a faster adjustment speed and more precise pulling force control.

[0028] Among them, guide plates 6 are installed on the outside of the two sliding seats 4. The inner wall of the guide plate 6 is provided with an integrally formed guide rail groove 601. The sliding seat 4 is slidably connected to the guide plate 6 through the guide rail groove 601. By installing the guide plate 6 at the lower end of the sliding seat 4, it is ensured that when the double-acting hydraulic cylinder 5 pushes, the movable pulley 401 can only move horizontally in the guide rail groove 601 and will not move up and down or rotate, thus preventing the wire rope 3 from derailing due to the deviation of the movable pulley 401.

[0029] Furthermore, a lifting lug 7 is installed below the connecting seat 702. The lifting lug 7 is connected to the bottom end of the connecting seat 702 via a chain 701. The goods are lifted by the lifting lug 7 for transportation.

[0030] Specifically, by installing a guide plate 6 at the lower end of the sliding seat 4, it is ensured that when the double-acting hydraulic cylinder 5 pushes, the movable pulley 401 can only move horizontally along the guide rail groove 601, and will not move up and down or rotate, thus preventing the wire rope 3 from derailing due to the deviation of the movable pulley 401. The double-acting hydraulic cylinder 5 can supply oil in both directions, and can both push and pull. Compared with the single-acting hydraulic cylinder, the adjustment speed is faster and the tension control is more precise.

[0031] Working principle: The lifting frame 1 connects the four corners of the cargo to the four lifting lugs 7, and lifts it with a crane. During the lifting process, the load cell 703 detects the weight pulled by each connecting seat 702. According to the weight, the hydraulic pump 501 is adjusted. When the load tilts or the center of gravity shifts, the double-acting hydraulic cylinder 5 adjusts the position of the lower sliding seat 4. A guide plate 6 is installed at the lower end of the sliding seat 4 to ensure that when the double-acting hydraulic cylinder 5 pushes, the movable pulley 401 can only move horizontally within the guide rail groove 601, and will not move up and down or rotate, thus preventing the wire rope 3 from derailing due to the displacement of the movable pulley 401. The core function of the double-acting hydraulic cylinder 5 is to change the effective length of the wire rope 3 on both sides. If the load tilts to the left, the left double-acting hydraulic cylinder... 5. When the left-hand pulley 401 is shortened, it moves to the left, shortening the effective section of the left-hand wire rope 3 and increasing its tension. This increases the pulling force on the lower left side of the lifting frame 1. Conversely, when the load tilts to the right, the left-hand pulley 401 moves to the right, lengthening the effective section of the right-hand wire rope 3 and reducing its tension. This reduces the pulling force on the right side. Conversely, if the load tilts to the right, the left-hand double-acting hydraulic cylinder 5 extends and the right-hand double-acting hydraulic cylinder 5 shortens, redistributing the pulling force of the wire ropes 3 on both sides and aligning the resultant force line with the center of gravity again, thus achieving balance. The double-acting hydraulic cylinder 5 allows for bidirectional oil supply, enabling both pushing and pulling. Compared to a single-acting hydraulic cylinder, it offers faster adjustment speed and more precise pulling force control.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus.

[0033] 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A balancing hoisting device for logistics transportation, comprising a hoisting frame (1), characterized in that, The hoisting frame (1) is equipped with a fixed seat (2) at both the front and rear ends. Sliding seats (4) are provided on both sides below the fixed seat (2). A wire rope (3) is provided between the sliding seat (4) and the fixed seat (2). Double-acting hydraulic cylinders (5) are installed on both sides of the lower end of the hoisting frame (1). The two ends of the double-acting hydraulic cylinder (5) are respectively hinged to the hoisting frame (1) and the sliding seat (4). A connecting seat (702) is installed at the lower end of the sliding seat (4). A weighing sensor (703) is installed inside the connecting seat (702).

2. The balancing hoisting device for logistics transportation according to claim 1, characterized in that, The lower end of the hoisting frame (1) is welded to a mounting plate (101), and the lower end of the mounting plate (101) is connected to a hydraulic pump (501) by fixing bolts. The hydraulic pump (501) is sealed to a double-acting hydraulic cylinder (5).

3. The balancing hoisting device for logistics transportation according to claim 1, characterized in that, The fixed seat (2) is rotatably connected to a fixed pulley (201) via a bearing inside, and the sliding seat (4) is rotatably connected to a movable pulley (401) via a bearing inside. The wire rope (3) rests on the upper surface of the fixed pulley (201) and is slidably connected to the fixed pulley (201), and both ends of the wire rope (3) are rotatably connected to the movable pulley (401).

4. The balancing hoisting device for logistics transportation according to claim 1, characterized in that, Guide plates (6) are installed on the outside of the two sliding seats (4). The inner wall of the guide plate (6) is provided with an integrally formed guide rail groove (601). The sliding seat (4) is slidably connected to the guide plate (6) through the guide rail groove (601).

5. The balancing hoisting device for logistics transportation according to claim 1, characterized in that, A lifting lug (7) is installed below the connecting seat (702), and the lifting lug (7) is connected to the bottom end of the connecting seat (702) via a chain (701).

6. The balancing hoisting device for logistics transportation according to claim 5, characterized in that, The two ends of the weighing sensor (703) are fixedly connected to the connecting seat (702) and the sliding seat (4) respectively. A retainer (704) is installed inside the connecting seat (702), and the retainer (704) is abutted against the bottom of the weighing sensor (703).

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