A spreader for a side crane

Abstract

The utility model discloses a kind of spreaders for side crane, it is related to container side crane technical field.The spreader includes lifting head subassembly, briquetting subassembly, load-bearing block subassembly and sensor component;The lifting head subassembly includes lifting head, joint bearing and main pin shaft, the main pin shaft is installed to side crane boom;Lifting head top interior inlaying is relevant joint bearing, the inner ring of joint bearing is connected to main pin shaft;The briquetting subassembly is connected to lifting head top;The load-bearing block subassembly is connected to lifting head bottom, the sensor component top connects briquetting subassembly, bottom connects load-bearing block subassembly;The sensor component is used to measure hoisting load weight.The utility model in the process of hoisting container or similar container, with real-time hoisting data output, guarantee the safety of operation, while, with more compact space structure, meet the efficient hoisting operation under the working condition of height space strict restriction.

Description

Technical Field

[0001] This utility model relates to the field of container side cranes, and specifically to a lifting device for a side crane. Background Technology

[0002] When side-mounted cranes are performing lifting operations, on the one hand, in most working conditions, the weight can only be estimated and the accurate weight cannot be determined, which undoubtedly poses a potential risk of overloading to lifting and transportation operations; on the other hand, when it is necessary to measure the weight of goods in certain situations, other equipment can be used to assist in weighing, which greatly limits the working space and efficiency.

[0003] In response, Chinese patent CN220098289U proposes a weighing lifting device that solves the problem of synchronous weighing during lifting operations. It adopts a sensor-pressed arrangement, which can meet the weighing purpose. However, when the working height and space are strictly limited, the structure of the protruding boom will inevitably increase the difficulty of lifting operations and reduce the efficiency of operations. In severe cases, the load cannot be lifted to the designated position, and the urgent operational requirements cannot be met. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting tool for a side crane, which, through the cooperation of a load-bearing block assembly and a pressure block assembly, achieves efficient lifting operations under conditions of strict height space constraints.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution.

[0006] On the one hand, this utility model provides a lifting device for a side crane, including a lifting head assembly 1, a pressure block assembly 2, a load-bearing block assembly 3, and a sensor assembly 4;

[0007] The lifting head assembly 1 includes a lifting head 11 and a joint bearing 12 embedded in the top of the lifting head 11;

[0008] The pressure block assembly 2 includes a pressure block 21 and a lifting chain assembly 22 for lifting;

[0009] The inner ring of the spherical bearing 12 is equipped with a main pin 13 for connecting the crane boom; the pressure block 21 is movably connected to the top of the lifting head 11; the lifting chain assembly 22 is movably connected to the bottom side of the pressure block 21; the load-bearing block assembly 3 is connected to the lifting head 11, and a sensor assembly 4 for measuring the load is installed between the pressure block 21 and the load-bearing block assembly 3.

[0010] Optionally, the pressure block assembly 1 further includes an upper pin 24 and a spacer 23. The bottom side of the pressure block 21 is provided with an upper pin hole for mounting the upper pin 24. The upper pin is fixedly connected to the upper pin hole. The spacer 23 is installed between the contact surfaces of the pressure block 21 and the upper pin 24. The hanging chain assembly 22 is connected to the bottom side of the pressure block through the upper pin 24.

[0011] By installing the lifting chain assembly on the left and right sides of the bottom of the pressure block, and cooperating with the spherical bearing of the lifting head assembly, it is possible to ensure that the sensor assembly is always subjected to positive pressure under the action of the lifting weight and its own weight when lifting heavy objects, thereby ensuring the accuracy of the weighing data.

[0012] Optionally, the chain assembly 22 includes a hook 221, a hook pin 222, a long chain link 223, a double ring buckle 224, and a short chain link 225; the hook 221 is connected to the long chain link 223 through the hook pin 222, and the long chain link 223 is connected to the short chain link 225 through the double ring buckle 224;

[0013] The long chain link 223 at the top of the chain assembly 22 is connected to the pressure block 21 via the upper pin 24; the long chain link 223 at the top of the chain assembly 22 is connected to the short chain link 225 via the double ring buckle 224.

[0014] The chain assembly has multiple double-ring buckles, which can flexibly adjust the length of the chain assembly according to the usage requirements and facilitate the replacement of individual parts.

[0015] Optionally, two connecting arms extend downward on both sides of the lifting head 11;

[0016] The pressure block 21 has a guide slot hole adapted to install the lifting head 11, and the connecting arm passes through the guide slot hole, so that the pressure block 21 can be moved longitudinally along the connecting arm of the lifting head 11.

[0017] The guide slots on the pressure block not only ensure the connection between the pressure block and the lifting head, but also help the pressure block slide up and down, ensuring that the load cell can effectively bear the pressure and accurately measure the load.

[0018] Optionally, the bottom sides of the connected arm are provided with lower pin holes for connecting the load-bearing block assembly 3;

[0019] The load-bearing block assembly 3 includes a load-bearing block 31 and a lower pin 33. The lower pin 33 is fixedly connected to the lower pin hole, and the load-bearing block 31 is connected to the lifting head 11 through the lower pin 33.

[0020] By installing the load-bearing block assembly through a pin hole at the bottom of the crane arm, it is easy to disassemble and replace it at any time, and it can ensure that the load-bearing block assembly is evenly stressed, thus ensuring that the load cell can effectively bear the pressure.

[0021] Optionally, the sensor assembly 4 includes a load cell 41, an anti-rotation plate 42, and a protective cover 43; the bottom of the load cell 41 is connected to the anti-rotation plate 42, and the anti-rotation plate 42 is fixedly connected to the top platform of the load-bearing block assembly 3 to fix the position of the load cell 41; the bottom of the protective cover 43 is provided with a limiting hole adapted to the load cell 41, the protective cover 43 is installed outside the load cell 41, and the top of the protective cover 43 is fixedly connected to the bottom of the pressure block 21 to transmit the pressure of the pressure block 21 to the load cell 41.

[0022] The load cell is installed between the pressure block and the load-bearing block assembly. The load cell measures the weight of the pressure block assembly and the lifting weight converted from the load. No additional height is required for stretching. The load cell rotation is restricted by the anti-rotation plate, and the protective cover prevents the sensor from being directly exposed to rain or damaged by impact.

[0023] Optionally, it also includes a guide plate 14, a guide plate 26, and a guide plate 32 for avoiding motion interference; the guide plate 14 is fixedly connected to the top of the lifting head 11; the guide plate 26 is fixedly connected to the top of the pressure block 21; and the guide plate 32 is fixedly connected to the bottom of the load-bearing block 31.

[0024] During actual lifting operations, the lifting device has multiple degrees of rotational freedom around the main pin shaft via spherical bearings. By setting multiple guide plates, motion interference between the lifting device, the boom, and the lifted goods is avoided during lifting preparation or loading.

[0025] Optionally, the first guide plate 14 is connected to the top of the lifting head 11 by screws; the second guide plate 26 is connected to the top of the pressure block 21 by screws; and the third guide plate 32 is welded and fixed to the bottom of the load-bearing block. The fixed connection of multiple guide plates can improve the overall strength of the lifting device and enhance its safety.

[0026] Optionally, the pressure block 21 is composed of multiple metal plates connected by screws or pins. The pressure block can be assembled from multiple metal plates, reducing the difficulty of processing.

[0027] Optionally, the lifting head 11 and the load-bearing block 31 are machined into a single unit, and together with the pressure block 21, they transmit pressure to the weighing sensor 41.

[0028] The integrated plate machine processes the lifting head and load-bearing block into a single unit, simplifying the processing procedure and improving the strength of the lifting equipment.

[0029] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0030] This utility model proposes a side-mounted crane lifting device. By installing the pressure block assembly at the top of the lifting head and the load-bearing block assembly at the bottom of the lifting head, the spatial structure of the lifting device becomes more compact. Installing the sensor assembly between the load-bearing block assembly and the pressure block assembly enables real-time output of lifting weight data, ensuring operational safety while meeting the requirements for efficient lifting operations under strict height space constraints. This utility model has a compact structure, spatial arrangement, and assembly processability, and can adapt to height-restricted working environments, improving operational efficiency. Attached Figure Description

[0031] Figure 1 The diagram shown is a schematic of the side crane lifting device assembly.

[0032] Figure 2 The diagram shown is a schematic of the components of a side-mounted crane lifting device;

[0033] Figure 3 The diagram shown is a schematic of the shape of the compression block;

[0034] Figure 4 The diagram shown is a schematic representation of the shape of the load-bearing block.

[0035] In the attached diagram: 1, lifting head assembly; 2, pressure block assembly; 3, load-bearing block assembly; 4, sensor assembly; 11, lifting head; 12, spherical bearing; 13, main pin; 14, guide plate one; 15, connecting screw four; 21, pressure block; 22, lifting chain assembly; 23, spacer; 24, upper pin; 25, connecting screw one; 26, guide plate two; 31, load-bearing block; 32, guide plate three; 33, lower pin; 34, connecting screw two; 41, load cell; 42, anti-rotation plate; 43, protective cover; 44, connecting screw three; 221, hook; 222, hook pin; 223, long chain link; 224, double ring buckle; 225, short chain link. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0037] Example 1

[0038] This embodiment describes a lifting device for a side-mounted crane, such as... Figure 1 As shown, the main structure consists of a lifting head assembly 1, a pressure block assembly 2, a load-bearing block assembly 3, and a sensor assembly 4; Figure 2As shown, the lifting head assembly 1 consists of a lifting head 11, a joint bearing 12, and a main pin 13; the pressure block assembly 2 consists of a pressure block 21, a lifting chain assembly 22, a spacer 23, an upper pin 24, and a connecting screw 25; the load-bearing block assembly 3 consists of a load-bearing block 31, a lower pin 33, and a connecting screw 34; the sensor assembly 4 consists of a weighing sensor 41, an anti-rotation plate 42, a protective cover 43, and a connecting screw 44. The lifting chain assembly 22 consists of a hook 221, a hook pin 222, a long chain link 223, a double ring buckle 224, and a short chain link 225.

[0039] like Figure 2 The hook 221 shown is connected to the lower end of the short chain 225 via hook pin 222, long chain link 223, and double ring buckle 224, for locking the container for lifting operations. The top short chain link 225 of the chain assembly 22 is installed at the pin holes on the left and right sides of the lower part of the pressure block 21 via double ring buckle 224, long chain link 223, upper pin 24, and spacer 23. The chain assembly has multiple double ring buckles, which can flexibly adjust the length of the chain assembly according to the usage requirements and facilitate the replacement of various components. The upper pin 24 is fixed to the side of the pressure block 21 by connecting screw 25 to prevent it from falling off. Two connecting arms extend downward from both sides of the lifting head 11; the pressure block 21 has a guide slot hole adapted to install the lifting head 11, and the connecting arm passes through the guide slot hole, so that the pressure block 21 can move longitudinally along the connecting arm of the lifting head 11. The pressure block 21 is pressed against the upper end of the load cell 41 through the bottom circular countersunk hole. The bottom end of the load cell 41 is pressed into the circular countersunk hole at the upper end of the load block 31. The shape of the load block 31 is as follows: Figure 4 As shown. The load-bearing block 31 is connected to the connecting arm of the lifting head 11 via the lower pin 33 through the pin holes on both sides, ensuring that the load cell can effectively bear the pressure. The lower pin 33 is fixedly installed in the pin hole by connecting screws 34. A spherical bearing 12 is embedded inside the top of the lifting head 11. The inner ring of the spherical bearing 12 is connected to the main pin 13, which is installed on the side crane boom to connect and fix the entire lifting device.

[0040] The chain assembly 22 is symmetrically arranged on the left and right sides of the pressure block 21. The shape of the pressure block 21 is as follows: Figure 3 As shown. The container or container-like corner is lifted by the hook 221, and the weight of the container or container-like is converted into downward pressure by the pressure block 21, which is then transmitted to the weighing sensor 41. The load-bearing block 31 at the bottom of the weighing sensor 41 bears the pressure, and the pressure is transmitted to the lifting head assembly 1 through the lower pins 33 at both ends of the load-bearing block 31. The joint bearing 12 inside the top of the lifting head 11 transmits the pressure to the main pin 13, and finally the pressure is transmitted to the boom of the side crane.

[0041] The weight of the container or container-like object being lifted by the spreader is the weight of the container or container-like object being lifted by the spreader on one side, which is the pressure borne by the load sensor 41 minus the weight of the load block assembly 2. The spreaders for side cranes are generally arranged symmetrically on both sides of the container or container-like object, and the sum of the weights measured by the spreaders on both sides is the total load weight.

[0042] The lifting head assembly 1, pressure block assembly 2, load-bearing block assembly 3, and sensor assembly 4, as a whole, swing around the center of the joint bearing 12 under their own weight and the tension of the lifting chain assembly 22, thereby ensuring that the weighing sensor 41 is always under positive pressure, thus ensuring the accuracy of the weighing data.

[0043] Considering the large lifting weight of the side-mounted crane, to ensure the reliability and stability of the lifting equipment, the pressure block 21 adopts an integral structure with internally machined assembly grooves to ensure assembly processability. (Reference) Figure 3 As can be seen, the pressure block 21 has a trapezoidal boss structure in the middle, with a chamfered top to avoid the inner rounded corner of the lifting head 11. A small assembly gap is reserved between the boss and the lifting head 11 on each side to limit its lateral displacement, and a groove surface to restrict its front-to-back movement. Simultaneously, a circular countersunk hole is machined at the bottom to fit onto the load cell 41, preventing excessive tilting during lifting. Furthermore, slots are cut on both sides of the pressure block 21 to provide installation space for the lifting chain assembly 22.

[0044] To facilitate the assembly of the load cell 41, the bottom of the lifting head 11 features an open design, with variable cross-section transitions at both ends to allow for the installation of the load-bearing block assembly. Figure 4 As can be seen, the load-bearing block 31 also adopts an integral structure, with slots and pin holes machined on both sides for installation on the bottom connecting arm of the lifting head 11, and can be disassembled and replaced at any time. A circular countersunk hole is machined in the middle of the upper part of the load-bearing block 31 so that the bottom end of the weighing sensor 41 can be pressed into the upper part for limiting and fixing.

[0045] To prevent the load cell 41 from rotating, an anti-rotation plate 42 is designed at its bottom, taking into account the structural characteristics of the load cell 41. It is installed on the load block 31 by connecting screws 44 to limit its rotation. At the same time, a protective cover 43 is designed and installed at the bottom of the pressure block 21 to protect the load cell 41 from direct rain or impact damage.

[0046] Example 2

[0047] This embodiment of the side-mounted crane lifting device is a further improvement on the embodiment 1. Specifically, the lifting head assembly further includes a guide plate 14 and connecting screws 15; the pressure block assembly further includes a guide plate 26; and the load-bearing block assembly further includes a guide plate 32. Figure 1As shown, guide plate 14 is fixedly connected to the top of the lifting head, guide plate 2 is fixedly connected to the top of the pressure block 21, and guide plate 32 is welded and fixed to the bottom of the load-bearing block 31, thereby improving the overall strength of the lifting device and enhancing its safety. Guide plate 14, guide plate 26, and guide plate 32 can be used to avoid motion interference between the lifting device and other parts of the crane, which could cause safety accidents. Guide plate 32 can also prevent motion interference between the lifting device and the hoisted goods, thereby improving the safety performance of the lifting device.

[0048] The side-mounted crane's lifting device has multiple degrees of rotational freedom around the main pin shaft 13 via the spherical bearing 12, which leads to certain motion interference between the lifting device, the boom, and the lifted goods during the lifting process. The guide plate 14, guide plate 26, and guide plate 32 can avoid motion interference between the lifting device, the boom, and the lifted goods. The guide plate 14, guide plate 26, and guide plate 32 can be assembled and fixed by screws or welds.

[0049] In this embodiment, the integral structure of the pressure block 21 is achieved by connecting three metal plates with screws or pins, reducing the processing difficulty of the pressure block. Furthermore, in this embodiment, the lifting head 11 and the load-bearing block 31 can be machined into a single unit using a plate-mounting machine. This simplifies the processing flow and improves the strength of the lifting equipment. Combined with the assembled pressure block 21, it enables precise pressure transmission to the load cell 41, achieving accurate measurement of the lifted load. While ensuring operational safety, it also meets the requirements of efficient lifting operations under conditions of strict height space constraints with a more compact spatial structure.

[0050] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this utility model and for simplifying the description, 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. Therefore, they should not be construed as limitations on this utility model.

[0051] The above description is only a preferred embodiment of the present 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 the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lifting device for a side-mounted crane, characterized in that, It includes a lifting head assembly (1), a pressure block assembly (2), a load-bearing block assembly (3), and a sensor assembly (4); The lifting head assembly (1) includes a lifting head (11) and a joint bearing (12) embedded in the top of the lifting head (11). The pressure block assembly (2) includes a pressure block (21) and a lifting chain assembly (22) for lifting. The inner ring of the spherical bearing (12) is equipped with a main pin (13) for connecting the crane boom; the pressure block (21) is movably connected to the top of the crane head (11); the chain assembly (22) is movably connected to the bottom side of the pressure block (21); the load-bearing block assembly (3) is connected to the crane head (11), and a sensor assembly (4) for measuring the load is installed between the pressure block (21) and the load-bearing block assembly (3).

2. The lifting device for a side-mounted crane according to claim 1, characterized in that, The pressure block assembly (1) also includes an upper pin (24) and a spacer (23). The bottom side of the pressure block (21) is provided with an upper pin hole for mounting the upper pin (24). The upper pin is fixedly connected to the upper pin hole. The spacer (23) is installed between the contact surfaces of the pressure block (21) and the upper pin (24). The hanging chain assembly (22) is connected to the bottom side of the pressure block through the upper pin (24).

3. The lifting device for a side-mounted crane according to claim 2, characterized in that, The chain assembly (22) includes a hook (221), a hook pin (222), a long chain link (223), a double ring buckle (224), and a short chain link (225); the hook (221) is connected to the long chain link (223) through the hook pin (222), and the long chain link (223) is connected to the short chain link (225) through the double ring buckle (224); The long chain link (223) at the top of the chain assembly (22) is connected to the pressure block (21) via the upper pin (24); the long chain link (223) at the top of the chain assembly (22) is connected to the short chain link (225) via the double ring buckle (224).

4. The lifting device for a side-mounted crane according to claim 1, characterized in that, The lifting head (11) has two connecting arms extending downward on both sides; The pressure block (21) has a guide slot hole adapted to install the lifting head (11), and the connecting arm passes through the guide slot hole, so that the pressure block (21) can be longitudinally displaced along the connecting arm of the lifting head (11).

5. The lifting device for a side-mounted crane according to claim 4, characterized in that, The bottom of the connecting arm has lower pin holes on both sides for connecting the load-bearing block assembly (3); The load-bearing block assembly (3) includes a load-bearing block (31) and a lower pin (33). The lower pin (33) is fixedly connected to the lower pin hole, and the load-bearing block (31) is connected to the lifting head (11) through the lower pin (33).

6. The lifting device for a side-mounted crane according to claim 1, characterized in that, The sensor assembly (4) includes a load cell (41), an anti-rotation plate (42), and a protective cover (43). The load cell (41) is connected to the bottom of the anti-rotation plate (42), which is fixedly connected to the top platform of the load-bearing block assembly (3) to fix the position of the load cell (41). The bottom of the protective cover (43) is provided with a limiting hole adapted to the load cell (41). The protective cover (43) is installed outside the load cell (41), and the top of the protective cover (43) is fixedly connected to the bottom of the pressure block (21) to transmit the pressure of the pressure block (21) to the load cell (41).

7. The lifting device for a side-mounted crane according to claim 1, characterized in that, It also includes a guide plate one (14), a guide plate two (26) and a guide plate three (32) for avoiding motion interference; the guide plate one (14) is fixedly connected to the top of the lifting head (11); the guide plate two (26) is fixedly connected to the top of the pressure block (21); and the guide plate three (32) is fixedly connected to the bottom of the load-bearing block (31).

8. The lifting device for a side-mounted crane according to claim 7, characterized in that, The first guide plate (14) is connected to the top of the lifting head (11) by screws; the second guide plate (26) is connected to the top of the pressure block (21) by screws; the third guide plate (32) is welded and fixed to the bottom of the load-bearing block.

9. The lifting device for a side-mounted crane according to claim 1, characterized in that, The pressure block (21) is made of multiple metal plates connected by screws or pins.

10. The lifting device for a side-mounted crane according to claim 1, characterized in that, The lifting head (11) and the load-bearing block (31) are machined into a whole, and together with the pressure block (21) they realize the pressure transmission of the weighing sensor (41).

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