A container spreader opening and closing lock mechanism

Abstract

This utility model relates to the field of container spreader, and more particularly to a container spreader opening and closing locking mechanism, including a housing. Opening and closing locking components are symmetrically arranged on both sides of the housing, and a drive assembly is located at the bottom of the housing. Both ends of the drive assembly are connected to a buffer device one and a buffer device two via pins, and the other ends of buffer device one and buffer device two are connected to the corresponding opening and closing locking components via connecting rods. Both buffer device one and buffer device two include a sleeve and several butterfly springs disposed within the sleeve. In this utility model, by using buffer device one and buffer device two to absorb the counter-thrust force generated on the drive shaft when the pivot pin engages with the container, the impact of the counter-thrust force on the electric push rod is reduced, ensuring the service life of the drive core. Simultaneously, the arrangement of the two sets of opening and closing locking components in conjunction with the drive assembly ensures stability during container loading, unloading, and handling.

Description

Technical Field

[0001] This utility model relates to the field of container spreader technology, and in particular to a container spreader opening and closing locking mechanism. Background Technology

[0002] A container spreader is a specialized piece of equipment designed for the safe and efficient lifting and handling of containers. It is typically installed on lifting machinery such as quay cranes, yard cranes, gantry cranes, or straddle carriers in ports, and is a key component connecting cranes and containers in a container logistics system.

[0003] In most existing container spreaders, the drive chains are rigid. At the moment of container landing and locking, the huge impact force is directly transmitted to the drive motor and the entire frame through the connecting rod, which can easily lead to cracking of structural components. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a container spreader opening and closing mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A container spreader opening and closing locking mechanism includes a housing, with opening and closing locking components symmetrically arranged on both sides inside the housing, and a drive assembly arranged at the bottom inside the housing. The drive assembly includes a mounting sleeve, an electric push rod is arranged inside the mounting sleeve, and a splined shaft is connected to the top end of the electric push rod. A transmission block is fixedly arranged on the splined shaft, and a buffer device one and a buffer device two are respectively connected to the two ends of the transmission block through pins. The other ends of buffer device one and buffer device two are respectively connected to the corresponding opening and closing locking components via connecting rods. Both buffer device one and buffer device two include a sleeve and several butterfly springs disposed in the sleeve. The end of the connecting rod is connected to the sleeve and can compress the butterfly springs.

[0006] Furthermore, in a preferred configuration, the locking and unlocking assembly includes a handle assembly rotatably supported on the chassis and a vertically arranged top pin device, with one end of the handle assembly linked to the top pin device.

[0007] In addition, a preferred structure is that the rotating handle assembly includes a thrust joint bearing and a drive shaft. The thrust joint bearing is rotatably connected to the end of the connecting rod. The drive shaft is disposed inside the thrust joint bearing, and the lower end of the drive shaft is sequentially provided with a nut, a rotating handle, a bushing, and a rotating pin.

[0008] Furthermore, in a preferred configuration, the top pin device includes a mounting base fixed to the chassis, a slide rod vertically slidably disposed within the mounting base, a top pin disposed at the bottom of the slide rod, and a spring body sleeved above the top pin and outside the slide rod for providing a restoring elastic force to the top pin.

[0009] Furthermore, in a preferred configuration, the locking and unlocking assembly further includes a lock and switch proximity limiting mechanism for detecting the displacement of the slide bar to determine the lock and switch status. The lock and switch proximity limiting mechanism is fixed to the chassis via a mounting base, and the sensing end of the lock and switch proximity limiting mechanism corresponds to the position of the slide bar of the top pin device.

[0010] In addition, a preferred structure is that a limit sensing block is sleeved on the outside of the second buffer device, and an anti-fall-off proximity limit mechanism for monitoring the extreme position of the buffer device is provided on the side of the chassis at the limit sensing block.

[0011] Furthermore, a preferred configuration is that a chassis approach limiting mechanism is provided inside the chassis between the buffer device and the adjacent opening and closing locking assembly.

[0012] The beneficial effects of this utility model are as follows: In this invention, by combining buffer device one and buffer device two, and absorbing the reverse thrust generated on the drive shaft when the rotating pin engages the container, the impact of the reverse thrust on the electric push rod is reduced, ensuring the service life of the drive core. At the same time, the setting of two sets of opening and closing locking components in the drive assembly ensures the stability during the loading, unloading and handling of containers. Attached Figure Description

[0013] Figure 1 This is a partial cross-sectional view of the opening and closing locking mechanism of a container spreader proposed in this utility model. Figure 1 ; Figure 2 This is a side view of the opening and closing locking mechanism of a container spreader proposed in this utility model; Figure 3 This is a partial cross-sectional view of the opening and closing locking mechanism of a container spreader proposed in this utility model. Figure 2 ; Figure 4 This is a schematic diagram of the opening and closing mechanism of a container spreader proposed in this utility model; Figure 5 This is a schematic diagram of the internal structure of the container spreader opening and closing mechanism proposed in this utility model. Figure 6 A structural diagram showing the position of the top pin and the state of the spreader when it is detached from the container; Figure 7 A structural diagram showing the position of the top pin and the state of the spreader when lifting a container; Figure 8 This is a structural diagram showing the position of the top pin and the state of the spreader when it is placed on the container.

[0014] In the diagram: 1. Chassis; 2. Drive assembly; 31. Buffer device one; 32. Buffer device two; 4. Connecting rod; 5. Limit sensor block; 6. Anti-detachment proximity limit mechanism; 7. Box-mounting proximity limit mechanism; 8. Top pin device; 9. Switch lock proximity limit mechanism; 10. Nut; 11. Rotary handle; 12. Thrust joint bearing; 13. Bushing; 14. Rotary pin. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-8 A container spreader opening and closing locking mechanism includes a housing 1, with opening and closing locking components symmetrically arranged on both sides inside the housing 1, and a drive assembly 2 arranged at the bottom inside the housing 1. The drive assembly 2 includes a mounting sleeve, an electric push rod is arranged inside the mounting sleeve, and a splined shaft is connected to the top end of the electric push rod. A transmission block is fixedly arranged on the splined shaft, and the two ends of the transmission block are respectively connected to a buffer device 31 and a buffer device 32 through pins. The other ends of buffer device 1 31 and buffer device 2 32 are respectively connected to the corresponding opening and closing locking components via connecting rod 4. Both buffer device 1 31 and buffer device 2 32 include a sleeve and several butterfly springs disposed in the sleeve. The end of connecting rod 4 is connected to the sleeve and can compress the butterfly springs.

[0017] It is worth noting that the model of the drive component is JNDT003-100 / E, and the specific structure and working principle of the drive component, the disc spring, and the spring body are all existing technologies that are currently publicly available on the market, so they will not be elaborated further. Furthermore, through the setting of buffer device 1 31 and buffer device 2 32, the reverse thrust generated on the drive shaft when the pivot pin engages the housing is absorbed, which plays a certain buffering role, ensures the service life of the drive shaft, reduces the possibility of deformation or even breakage of the drive shaft after being impacted, and ensures the stability of the entire device during operation.

[0018] The opening and closing locking assembly includes a handle assembly rotatably supported on the housing 1 and a vertically arranged top pin device 8. One end of the handle assembly is linked with the top pin device 8. The handle assembly includes a thrust joint bearing 12 and a drive shaft. The thrust joint bearing 12 is rotatably connected to the end of the connecting rod 4. The drive shaft is disposed in the thrust joint bearing 12, and the lower end of the drive shaft is sequentially provided with a nut 10, a handle 11, a bushing 13, and a pivot pin 14.

[0019] The top pin device 8 includes a mounting base, which is fixed to the housing 1. A slide rod is vertically slidably arranged inside the mounting base, and a top pin is provided at the bottom of the slide rod. A spring body is sleeved above the top pin and outside the slide rod to provide a restoring elastic force to the top pin.

[0020] The locking and unlocking assembly also includes a lock and unlocking proximity limit mechanism 9 for detecting the displacement of the slide bar to determine the lock and unlocking status. The lock and unlocking proximity limit mechanism 9 is fixed to the housing 1 via a mounting base, and the sensing end of the lock and unlocking proximity limit mechanism 9 corresponds to the position of the slide bar of the top pin device 8.

[0021] The buffer device 2 32 is fitted with a limit sensor block 5, and the side of the housing 1 is provided with a non-falling proximity limit mechanism 6 for monitoring the extreme position of the buffer device at the limit sensor block 5. The housing 1 is provided with a housing proximity limit mechanism 7 between the buffer device 1 31 and the adjacent opening and closing locking assembly.

[0022] The switch lock proximity limit mechanism 9, limit sensor block 5, and box-laying proximity limit mechanism 7 are all connected to and control the electric push rod via electrical signals. The configuration of these three mechanisms ensures the stability of the lifting device during use.

[0023] In this embodiment, when it is necessary to lift the container, this device is used in combination with a crane, and the crane operates the device to move it directly above the target container.

[0024] Then, the operator controls the spreader to descend, aligning its pivot pin 14 with the lock hole on the top of the container, and gradually bringing its top pin device 8 into contact with the container, thus moving the slide bar towards the switch lock proximity limit mechanism 9 until the slide bar contacts the switch lock proximity limit mechanism 9, and then controlling the opening of the electric push rod through the switch lock proximity limit mechanism 9.

[0025] Next, the top end of the electric push rod extends and pushes the spline shaft and transmission block to move horizontally to one side, and pushes the buffer device 31 and the buffer device 32 respectively. The thrust of the connecting rod 4 is transmitted to the rotating handle assembly through the thrust joint bearing 12.

[0026] Then, the handle assembly converts the linear motion of the connecting rod into rotational motion, driving the pivot pin 14 to rotate 90 degrees, thereby locking it in the container's lock hole.

[0027] Next, when it is necessary to disconnect the spreader from the container, the crane lifts the container to the target position and places it smoothly on the site. Then, the electric push rod is turned off, and the top extension end of the electric push rod retracts, pulling the spline shaft and transmission block to move horizontally to the other side. Through the transmission block and the connecting rod 4, the rotating handle assembly is pulled, causing its pivot pin 14 to rotate 90 degrees in the opposite direction. Then, the spreader can be controlled to rise away from the container until the pivot pin 14 of the spreader is vertically pulled out of the container's locking hole, completing the separation.

[0028] In this utility model, by combining the first buffer device 31, the second buffer device 32, and absorbing the reverse thrust generated on the drive shaft when the rotating pin engages the container, the impact of the reverse thrust on the electric push rod 2 is reduced, ensuring the service life of the drive core. At the same time, in conjunction with the setting of two sets of opening and closing locking components of the drive assembly 2, the stability of the container loading, unloading and handling process is ensured.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A container spreader opening and closing locking mechanism, comprising a housing (1), characterized in that, The two sides of the chassis (1) are symmetrically provided with opening and closing locking components, and the bottom of the chassis (1) is provided with a drive component (2). The drive component (2) includes a mounting sleeve, an electric push rod is provided in the mounting sleeve, and the top end of the electric push rod is connected to a spline shaft. A transmission block is fixedly provided on the spline shaft, and the two ends of the transmission block are respectively connected to a buffer device one (31) and a buffer device two (32) through pins. The other ends of the first buffer device (31) and the second buffer device (32) are respectively connected to the corresponding opening and closing locking components via connecting rods (4). Both the first buffer device (31) and the second buffer device (32) include a sleeve and several butterfly springs disposed in the sleeve. The end of the connecting rod (4) is connected to the sleeve and can compress the butterfly springs.

2. The container spreader opening and closing locking mechanism according to claim 1, characterized in that, The opening and closing lock assembly includes a handle assembly rotatably supported on the chassis (1) and a vertically arranged top pin device (8), with one end of the handle assembly linked to the top pin device (8).

3. The container spreader opening and closing locking mechanism according to claim 2, characterized in that, The rotating handle assembly includes a thrust joint bearing (12) and a drive shaft. The thrust joint bearing (12) is rotatably connected to the end of the connecting rod (4). The drive shaft is located inside the thrust joint bearing (12), and the lower end of the drive shaft is sequentially provided with a nut (10), a rotating handle (11), a bushing (13), and a rotating pin (14).

4. The container spreader opening and closing locking mechanism according to claim 2, characterized in that, The top pin device (8) includes a mounting base, which is fixed on the chassis (1). A slide rod is vertically slidably arranged inside the mounting base, and a top pin is provided at the bottom of the slide rod. A spring body is sleeved above the top pin and outside the slide rod to provide a restoring elastic force to the top pin.

5. The container spreader opening and closing locking mechanism according to claim 1, characterized in that, The locking and unlocking assembly also includes a lock and unlocking proximity limit mechanism (9) for detecting the displacement of the slide bar to determine the lock and unlocking status. The lock and unlocking proximity limit mechanism (9) is fixed to the housing (1) via a mounting base, and the sensing end of the lock and unlocking proximity limit mechanism (9) corresponds to the slide bar position of the top pin device (8).

6. The container spreader opening and closing locking mechanism according to claim 1, characterized in that, The buffer device 2 (32) is fitted with a limit sensor block (5) on its outside, and the side of the chassis (1) is provided with an anti-falling proximity limit mechanism (6) for monitoring the extreme position of the buffer device at the limit sensor block (5).

7. The container spreader opening and closing locking mechanism according to claim 1, characterized in that, The chassis (1) is provided with a chassis approach limit mechanism (7) located between the buffer device (31) and the adjacent opening and closing locking assembly.

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