Counterweight sling

Abstract

The utility model discloses a counterweight sling, including the sling main part, and the sling main part includes the rotatory setting of hanging arm, and the end of hanging arm is provided with counterweight assembly, and counterweight assembly includes counterweight seat and counterweight block, and counterweight seat is rotatively connected with hanging arm, and the rotating axle axial line direction of counterweight seat is parallel to the rotating axle axial line direction of hanging arm, and counterweight block is detachably fixedly connected with counterweight seat. The above -mentioned counterweight sling reasonable in structure can according to actual hoisting condition and increase or decrease the counterweight block, guarantee hoisting's balanced stability.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a counterweight lifting equipment. Background Technology

[0002] Balance cranes are mainly used for hoisting workpieces in workshops or moving objects in local spaces. They are characterized by flexibility, light weight, and low cost.

[0003] The existing balance crane, as described in CN219341531U, includes a hydraulic balance crane body and a mobile base. One end of the hydraulic balance crane body is equipped with a counterweight, and the other end is equipped with an electronic crane scale. The electronic crane scale can weigh the heavy objects being lifted, making it easy for workers to quickly determine whether the weight of the counterweight needs to be adjusted, thus improving the convenience of use.

[0004] The counterweights of the aforementioned balance crane are fixed and cannot be increased or decreased according to the actual situation of the lifted load, thus failing to ensure the balance and stability of the lifting operation as much as possible.

[0005] Therefore, it is necessary to improve the counterweight lifting devices in the existing technology. Utility Model Content

[0006] The purpose of this utility model is to overcome the defects in the existing technology and provide a counterweight lifting device that can increase or decrease the counterweight blocks according to the actual lifting situation to ensure the balance and stability of the lifting.

[0007] To achieve the above technical effects, the technical solution of this utility model is as follows: a counterweight lifting device, including a lifting device body, the lifting device body including a rotatably configured boom, a counterweight assembly being provided at the end of the boom, the counterweight assembly including a counterweight seat and a counterweight block, the counterweight seat being rotatably connected to the boom, the axis of rotation of the counterweight seat being parallel to the axis of rotation of the boom, and the counterweight block being detachably fixedly connected to the counterweight seat.

[0008] According to one embodiment of the present invention, the counterweight base is provided with a plurality of mounting slots, and the counterweight block is provided with a plug that is inserted and engaged with the mounting slots.

[0009] According to one embodiment of the present invention, a plurality of the mounting slots are symmetrically arranged with respect to a first vertical plane, and the axis of the lifting device body coincides with the first vertical plane.

[0010] According to one embodiment of the present invention, the lifting device body is provided with a main cylinder for driving the boom to rotate, the boom is fixedly provided with a crash plate, and the crash plate is disposed between the main cylinder and the counterweight seat.

[0011] According to one embodiment of the present invention, it further includes an auxiliary component for assisting in the assembly and disassembly of the counterweight. The auxiliary component includes a fixed base, a platform that is raised and lowered in coordination with the base, and a sliding seat that is slidably connected to the platform. The sliding seat is used to support the counterweight, and a plurality of the sliding seats are arranged in a one-to-one correspondence with the mounting groove.

[0012] According to one embodiment of the present invention, the counterweight seat is fixedly provided with an extension rod, and the extension rod is rotatably connected to the boom.

[0013] According to one embodiment of the present invention, the base is provided with a guide groove, the platform is fixedly provided with a guide column, the guide column is slidably disposed in the guide groove, and a lifting cylinder for driving the platform to rise and fall is provided between the platform and the base.

[0014] According to one embodiment of the present invention, the platform is provided with a sliding groove, and the sliding seat is provided with a slider that is slidably connected to the sliding groove, wherein the extending direction of the sliding groove is parallel to the extending direction of the mounting groove.

[0015] According to one embodiment of the present invention, the sliding seat is provided with a limiting groove that limits and cooperates with the counterweight.

[0016] The advantages and beneficial effects of this utility model are as follows: The counterweight lifting device of this utility model is reasonably designed. By setting a counterweight seat and a counterweight block at the end of the boom, and setting several counterweight blocks, all of which can be detachably and fixedly connected to the counterweight seat, the counterweight blocks can be added or removed according to the lifting situation, thereby ensuring the balance and stability of the lifting. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the counterweight lifting device of this utility model; Figure 2 This is a structural schematic diagram of the main body of the lifting device; Figure 3 This is a schematic diagram of the counterweight base; Figure 4 This is a schematic diagram of the counterweight structure; Figure 5 This is a schematic diagram of the platform's structure; Figure 6 This is a schematic diagram of the sliding seat structure; In the diagram: 1. Lifting device body; 2. Boom; 21. Anti-collision plate; 3. Counterweight seat; 31. Mounting slot; 32. Extension rod; 4. Counterweight block; 41. Insert block; 5. Main cylinder; 6. Base; 61. Guide groove; 7. Platform; 71. Guide column; 72. Slide groove; 8. Sliding seat; 81. Sliding block; 82. Limiting groove; 9. Lifting cylinder. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model. Example

[0019] like Figure 1-6 As shown, the counterweight lifting device of the embodiment includes a lifting device body 1, the lifting device body 1 includes a rotatably configured boom 2, the end of the boom 2 is provided with a counterweight assembly, the counterweight assembly includes a counterweight seat 3 and a counterweight block 4, the counterweight seat 3 is rotatably connected to the boom 2, the rotation axis of the counterweight seat 3 is parallel to the rotation axis of the boom 2, and the counterweight block 4 is detachably fixedly connected to the counterweight seat 3.

[0020] With this design, the counterweight can be flexibly increased or decreased to suit different weights of objects being lifted: the counterweight blocks and counterweight seats are detachably fixed, and the number of counterweight blocks can be freely increased or decreased according to the actual weight of the object being lifted: when lifting heavy workpieces, increasing the counterweight blocks increases the counterweight torque; when lifting light workpieces, reducing the counterweight blocks avoids excessive counterweight.

[0021] The counterweight adjusts its posture dynamically to maintain torque balance: the centerline of the counterweight's rotation axis is parallel to the boom, and the counterweight is rotatably connected to the boom, allowing the counterweight to adaptively rotate around its own axis as the boom rotates. This ensures that the counterweight assembly effectively maintains balance under different boom rotation angles.

[0022] According to one embodiment of the present invention, the counterweight base 3 is provided with a plurality of mounting slots 31, and the counterweight block 4 is provided with a plug block 41 that is inserted and engaged with the mounting slots 31.

[0023] This design simplifies assembly and disassembly, improving counterweight adjustment efficiency: the insert block and mounting slot use a plug-in connection structure, eliminating the need for complex fixing methods such as bolts; during installation, simply align the counterweight block with the mounting slot and insert it to secure it; during disassembly, simply pull out the insert block to remove the counterweight. This reduces the counterweight adjustment time before hoisting in the workshop, improving operational efficiency.

[0024] Multiple mounting slots adapt to various counterweight requirements, offering high flexibility: The counterweight seat is equipped with several mounting slots, allowing the selection of different mounting slots to insert counterweight blocks according to the weight requirements of the object being lifted: When lifting heavy workpieces, counterweight blocks can be inserted into multiple mounting slots to increase the counterweight torque; when lifting light workpieces, the number of inserted counterweight blocks can be reduced.

[0025] According to one embodiment of the present invention, a plurality of mounting slots 31 are symmetrically arranged with respect to a first vertical plane, and the axis of the lifting device body 1 is arranged to coincide with the first vertical plane.

[0026] This design ensures that the counterweight's center of gravity coincides with the plane containing the spreader's axis, maintaining a balanced lifting torque. The mounting slots are symmetrically distributed along the first vertical plane coinciding with the spreader's main axis. When the counterweight is inserted into the mounting slot, its center of gravity naturally falls on this vertical plane, coinciding with the spreader's main axis. This avoids torque imbalance caused by counterweight center of gravity shift, ensuring balance and stability under various lifting conditions.

[0027] According to one embodiment of the present invention, the lifting device body 1 is provided with a main cylinder 5 for driving the boom 2 to rotate, and the boom 2 is fixedly provided with a crash plate 21, which is disposed between the main cylinder 5 and the counterweight 3.

[0028] With this design, the anti-collision plate isolates the main cylinder from the counterweight seat, avoiding damage from component collisions: the anti-collision plate is set between the main cylinder and the counterweight seat, which can prevent direct contact between the two during the rotation of the boom and the movement of the counterweight seat: to prevent the counterweight seat from hitting the main cylinder due to excessive rotation or inertia, thus preventing damage to the cylinder, and at the same time protecting the structural integrity of the counterweight seat.

[0029] According to one embodiment of the present invention, it also includes an auxiliary component for assisting in the disassembly and assembly of the counterweight 4. The auxiliary component includes a fixed base 6, a platform 7 that is raised and lowered in coordination with the base 6, and a sliding seat 8 that is slidably connected to the platform 7. The sliding seat 8 is used to support the counterweight 4, and a plurality of sliding seats 8 are arranged in a one-to-one correspondence with the mounting groove 31.

[0030] This design significantly reduces labor costs by assisting in the manual assembly of counterweights. Counterweights are typically heavy components, and manually handling, lifting, disassembling, and assembling them is not only laborious but also prone to errors due to physical exhaustion. The sliding base can directly bear the weight of the counterweight. The lifting and lowering coordination between the base and the platform, and the sliding coordination between the platform and the sliding base, allow the counterweight to be lifted and moved mechanically without the need for direct manual lifting. This effectively reduces labor consumption during the assembly and disassembly process and is especially suitable for adjusting heavy and numerous counterweights.

[0031] The sliding seats and mounting slots are matched one-to-one to achieve precise alignment of the counterweights: Several sliding seats are set up one-to-one with the mounting slots, so that the counterweights on each sliding seat can be aligned with the corresponding mounting slots. When the sliding seats slide along the platform, they can push the counterweights smoothly to the insertion position of the mounting slots, avoiding misalignment of the counterweights and mounting slots caused by visual errors and uneven force during manual handling. This improves the accuracy of counterweight assembly and disassembly, and also reduces wear and tear on the inserts and mounting slots caused by misalignment and collision.

[0032] According to one embodiment of the present invention, the counterweight 3 is fixedly provided with an extension rod 32, and the extension rod 32 is rotatably connected to the boom 2.

[0033] This design optimizes the rotation space and avoids interference between the counterweight and surrounding components: the extension rod creates a certain spatial distance between the counterweight and the main boom, effectively preventing spatial interference between the counterweight and components such as the anti-collision plate and main cylinder on the boom when it rotates with the boom. At the same time, the extension rod reduces the height of the counterweight, facilitating its assembly.

[0034] According to one embodiment of the present invention, the base 6 is provided with a guide groove 61, the platform 7 is fixedly provided with a guide column 71, the guide column 71 is slidably provided in the guide groove 61, and a lifting cylinder 9 for driving the platform 7 to rise and fall is provided between the platform 7 and the base 6.

[0035] This design achieves the goal of stable platform lifting and lowering.

[0036] According to one embodiment of the present invention, the platform 7 is provided with a slide groove 72, and the sliding seat 8 is provided with a slider 81 that is slidably connected to the slide groove 72. The extending direction of the slide groove 72 is parallel to the extending direction of the mounting groove 31.

[0037] This design ensures smooth movement of the sliding block, reduces sliding friction resistance, and improves the efficiency of counterweight pushing. The sliding block moves more smoothly, and the counterweight can be sent to the installation position without excessive pushing force, reducing the manpower consumption during operation and improving the overall efficiency of counterweight adjustment.

[0038] According to one embodiment of the present invention, the sliding seat 8 is provided with a limiting groove 82 that cooperates with the counterweight 4 for limiting.

[0039] This design limits the displacement of the counterweight, ensures stability during the sliding process, and prevents the counterweight from sliding back and forth, shifting left and right, or tipping over due to inertia when the sliding seat slides along the platform groove.

[0040] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A counterweight lifting device, characterized in that, The device includes a lifting body (1), which includes a rotatably mounted boom (2). The end of the boom (2) is provided with a counterweight assembly, which includes a counterweight seat (3) and a counterweight block (4). The counterweight seat (3) is rotatably connected to the boom (2). The axis of rotation of the counterweight seat (3) is parallel to the axis of rotation of the boom (2). The counterweight block (4) is detachably fixedly connected to the counterweight seat (3).

2. The counterweight lifting device according to claim 1, characterized in that, The counterweight base (3) is provided with a plurality of mounting slots (31), and the counterweight block (4) is provided with a plug (41) that is inserted and engaged with the mounting slots (31).

3. The counterweight lifting device according to claim 2, characterized in that, Several of the mounting slots (31) are symmetrically arranged on a first vertical plane, and the axis of the lifting device body (1) coincides with the first vertical plane.

4. The counterweight lifting device according to claim 1, characterized in that, The lifting device body (1) is provided with a main cylinder (5) for driving the boom (2) to rotate. The boom (2) is fixedly provided with a crash plate (21), which is located between the main cylinder (5) and the counterweight seat (3).

5. The counterweight lifting device according to claim 2, characterized in that, It also includes an auxiliary component for assisting in the disassembly and assembly of the counterweight (4). The auxiliary component includes a fixed base (6), a platform (7) that is raised and lowered in coordination with the base (6), and a sliding seat (8) that is slidably connected to the platform (7). The sliding seat (8) is used to support the counterweight (4), and several sliding seats (8) are arranged one-to-one with the mounting groove (31).

6. The counterweight lifting device according to claim 5, characterized in that, The counterweight seat (3) is fixedly provided with an extension rod (32), which is rotatably connected to the boom (2).

7. The counterweight lifting device according to claim 5, characterized in that, The base (6) is provided with a guide groove (61), the platform (7) is fixedly provided with a guide column (71), the guide column (71) is slidably provided in the guide groove (61), and a lifting cylinder (9) for driving the platform (7) to rise and fall is provided between the platform (7) and the base (6).

8. The counterweight lifting device according to claim 5, characterized in that, The platform (7) is provided with a slide groove (72), and the sliding seat (8) is provided with a slider (81) that is slidably connected to the slide groove (72). The extension direction of the slide groove (72) is parallel to the extension direction of the mounting groove (31).

9. The counterweight lifting device according to claim 5, characterized in that, The sliding seat (8) is provided with a limiting groove (82) that is matched with the counterweight (4).

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