A protection claw can be retracted as a whole

Abstract

The utility model discloses a kind of protection pincer claw can be wholly retracted's crane beam mechanism, it is related to port transport spreader field, including lower crane beam, electromagnet chuck is connected below lower crane beam, and it is equipped with accommodation interval between lower crane beam and electromagnet chuck;Lower crane beam below is connected with pincer claw slewing bearing, crane beam corbel is connected below pincer claw slewing bearing, a pair of protection pincer claw and drive assembly are connected on crane beam corbel, drive assembly drives protection pincer claw to close downwards and enclose below electromagnet chuck, or open upwards, accommodation interval is for the protection pincer claw that opens upwards and is rotated and received into it by pincer claw slewing bearing.It is rotated by pincer claw slewing bearing, and protection pincer claw is wholly hidden below lower crane beam, avoid the problem that protection pincer claw is easily collided with ship bulkhead under open state, and it is convenient to open and hide after being placed by electromagnet chuck, avoid affecting the placing position of screw steel in cabin, reach the effect of improving the applicability of device.

Description

Technical Field

[0001] This utility model relates to the field of port transportation lifting equipment, and in particular to a lifting beam mechanism with retractable protective jaws. Background Technology

[0002] In the port transportation department of steel enterprises, electromagnetic chucks are used to load rebar onto ships. To prevent the rebar from falling off the chucks, two pairs of protective jaws are installed on the lifting beam. These jaws are opened and closed by hydraulic actuators. However, when the protective jaws open, the opening degree is greater than the length of the electromagnetic chuck, which can easily cause the jaws to collide with the ship's bulkhead, resulting in damage to the jaws and hydraulic actuators. Furthermore, if the jaws open too wide, the rebar held by the electromagnetic chuck cannot be placed against the bulkhead, affecting loading space and tonnage. Therefore, these problems urgently need to be solved. Utility Model Content

[0003] The purpose of this invention is to provide a lifting beam mechanism with retractable protective claws. By rotating the claws via a slewing bearing, the protective claws are completely hidden under the lower lifting beam. This solves the problem of the protective claws colliding with the ship's bulkhead when the opening degree is greater than the length of the electromagnetic chuck. It also facilitates placement of the protective claws via the electromagnetic chuck after opening and hiding, avoiding interference with the placement of threaded steel bars in the ship's hold, and improving the applicability of the device.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A lifting beam mechanism with retractable protective jaws includes a lower lifting beam, an electromagnetic chuck connected below the lower lifting beam, and a receiving gap between the lower lifting beam and the electromagnetic chuck; a jaw slewing bearing is connected below the lower lifting beam, and a lifting beam bracket is connected below the jaw slewing bearing; a pair of protective jaws and a drive assembly are connected to the lifting beam bracket; the drive assembly drives the protective jaws to close downwards and surround the electromagnetic chuck, or to open upwards; the receiving gap allows the upwardly opened protective jaws to be rotated and retracted into it by the jaw slewing bearing.

[0005] By adopting the above technical solution, the accommodating gap between the lower lifting beam and the electromagnetic chuck, combined with the rotation of the slewing bearing of the jaws to drive the rotation of the protective jaws, allows the upward-opening protective jaws to rotate and retract into it, thus hiding the entire jaws under the lower lifting beam.

[0006] Furthermore, the drive assembly includes a hydraulic actuator, the two ends of which are respectively hinged between the lifting beam bracket and the protective jaws on the corresponding sides.

[0007] By adopting the above technical solution, the drive protection claws can be closed downwards and surrounded below the electromagnetic chuck, or opened upwards.

[0008] Furthermore, several connecting chains are connected below the lower suspension beam, and the lower ends of the connecting chains are connected to electromagnetic chucks.

[0009] By adopting the above technical solution, the electromagnetic chuck can move more freely, reducing the possibility of it falling off with slight collisions.

[0010] Furthermore, a lower motor is connected to the lower lifting beam, and the output end of the lower motor is connected to a lower drive gear, which meshes with the outer periphery of the jaw slewing bearing.

[0011] By adopting the above technical solution, the driving rotation of the jaw slewing bearing was achieved.

[0012] Furthermore, it also includes an upper hanging beam, which is connected to a lower hanging beam below.

[0013] By adopting the above technical solution, the connection of the upper part of the lower suspension beam was achieved.

[0014] Furthermore, the upper lifting beam is connected to the lower part of the lifting beam slewing bearing, and the lower lifting beam is connected to the lower part of the lifting beam slewing bearing.

[0015] By adopting the above technical solution, the rotation of the slewing bearing of the lifting beam is realized, which drives the rotation of the entire lower lifting beam.

[0016] Furthermore, an upper motor is connected to the upper lifting beam, and the output end of the upper motor is connected to an upper drive gear, which meshes with the outer circumference of the slewing bearing of the lifting beam.

[0017] By adopting the above technical solution, the driving rotation of the slewing bearing of the lifting beam was realized.

[0018] Furthermore, the protective gripper includes two clamping rods arranged at an acute angle. One clamping rod is hinged to the bracket of the lifting beam and connected to the drive assembly, while the other clamping rod rotates to a horizontal position to protect the area below the electromagnetic chuck.

[0019] By adopting the above technical solution, the protective function of the pliers claws is achieved.

[0020] Furthermore, the two clamps are connected by an arc.

[0021] By adopting the above technical solution, the protective claws can be opened without taking up too much height space.

[0022] In summary, this utility model has the following beneficial effects: By using the accommodating gap between the lower lifting beam and the electromagnetic chuck, and in conjunction with the slewing bearing of the claw to drive the rotation of the protective claw, the upward-opening protective claw can be rotated and retracted into it, thus hiding the entire claw under the lower lifting beam. This completely solves the problem of the protective claw colliding with the ship's bulkhead and affecting the placement of rebar in the ship's hold when the opening degree of the protective claw is greater than the length of the electromagnetic chuck. The size and arc of the protective jaws are designed so that when the protective jaws are opened, the highest point is slightly lower than the lower end face of the lower lifting beam, and the outermost part does not touch the electromagnetic chuck. The jaw rotation is interlocked with the jaw opening and closing. After the jaws are fully opened, the jaw rotation is started immediately, and after the jaws are fully rotated, the jaw closing is started immediately. They can also be set to open and close buttons for one-button operation, reducing waiting time. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a lifting beam mechanism with retractable protective grippers when the grippers are closed, according to this utility model. Figure 2 This is a schematic diagram of the structure of a lifting beam mechanism with retractable protective jaws when the jaws are open.

[0025] In the diagram, 1. Protective jaws; 2. Electromagnetic chuck; 3. Hydraulic actuator; 4. Lifting beam bracket; 5. Jaws slewing bearing; 6. Lower lifting beam; 7. Lifting beam slewing bearing; 8. Upper lifting beam. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These embodiments do not constitute a limitation on this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0027] A lifting beam mechanism with retractable protective jaws, such as Figure 1As shown, it includes an upper lifting beam 8 and a lower lifting beam 6. The upper lifting beam 8 is fixedly connected to the lower lifting beam 6 or rotatably connected to the lower lifting beam 6 via a slewing support. An electromagnetic chuck 2 is connected to the lower lifting beam 6, and an accommodating gap is provided between the lower lifting beam 6 and the electromagnetic chuck 2. In this embodiment, at least four connecting chains are connected to the lower lifting beam 6, located at the four corners respectively. The lower ends of the connecting chains are connected to the electromagnetic chuck 2, and the accommodating gap between the lower lifting beam 6 and the electromagnetic chuck 2 is formed by the connecting chains. The connecting chains can also be replaced by rigid connecting components such as connecting rods.

[0028] like Figure 1 and Figure 2 As shown, one or more jaw slewing bearings 5 ​​are connected below the lower lifting beam 6 to achieve jaw protection at one or more positions. The lifting beam bracket 4 is connected below the jaw slewing bearing 5. Hinges are symmetrically connected to both sides of the lifting beam bracket 4, and one or more pairs of protective jaws 1 are connected accordingly (in this embodiment, two jaw slewing bearings 5 ​​are symmetrically arranged to connect two pairs of protective jaws 1 to achieve protection of the steel reinforcement material below the electromagnetic chuck 2). The lifting beam bracket 4 is also connected to the two sides of the lifting beam bracket to drive the protective jaws 1 to close downward and surround the electromagnetic chuck 2, or to open upward. The accommodating interval allows the protective jaws 1 that are opened upward to be rotated and retracted into it through the jaw slewing bearing 5. In this embodiment, the protective claw 1 includes two clamping rods, which are connected by an arc transition. The two clamping rods can be integrally formed by bending or other methods. The two clamping rods are distributed at an acute angle. One clamping rod is hinged to the bracket 4 of the lifting beam and connected to the drive assembly to realize the connection and opening and closing drive with the bracket 4 of the lifting beam. The other clamping rod rotates to the horizontal position to protect the area below the electromagnetic chuck 2, or rotates upward to the vertical position to open (when the protective claw 1 is closed, the outer ends of the pair of protective claws 1 abut against each other to form a complete enclosure), thus realizing protection or opening. After the protective claw 1 is opened, its highest point (arc transition position) is slightly lower than the lower end face of the lower lifting beam 6, and its lowest point (outer end point) is slightly higher than the electromagnetic chuck 2, so that it can rotate 90 degrees after opening and be completely stored in the receiving interval. In some embodiments, its lowest point after opening can also be set to be lower than the electromagnetic chuck 2, so that the protective claw 1 rotates at an acute angle after opening, so that its lowest point after opening is close to or abuts against the outside of the electromagnetic chuck 2, and only part of the protective claw 1 is stored in the receiving interval. In this embodiment, the drive component includes a hydraulic actuator 3, with both ends of the hydraulic actuator 3 hinged between the corresponding side of the lifting beam bracket 4 and the protective claw 1; it can also be replaced by a linear drive component such as an electric cylinder or a pneumatic cylinder.

[0029] like Figure 1As shown, a lower motor is connected to the lower lifting beam 6, and the output end of the lower motor is connected to a lower drive gear. The lower drive gear meshes with the outer circumference of the jaw slewing bearing 5 to drive the jaw slewing bearing 5 to rotate. The upper lifting beam 8 is connected to the lower lifting beam slewing bearing 7, and the lower lifting beam 6 is connected to the lower lifting beam slewing bearing 7. An upper motor is connected to the upper lifting beam 8, and the output end of the upper motor is connected to an upper drive gear. The upper drive gear meshes with the outer circumference of the lifting beam slewing bearing 7 to drive the lower lifting beam 6 to rotate.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A lifting beam mechanism with retractable protective jaws, characterized in that: It includes a lower lifting beam, with an electromagnetic chuck connected below the lower lifting beam, and a receiving gap between the lower lifting beam and the electromagnetic chuck; a jaw slewing bearing is connected below the lower lifting beam, and a lifting beam bracket is connected below the jaw slewing bearing. A pair of protective jaws and a drive assembly are connected to the lifting beam bracket. The drive assembly drives the protective jaws to close downward and surround the electromagnetic chuck, or to open upward. The receiving gap allows the upward-opening protective jaws to be rotated and retracted into it by the jaw slewing bearing.

2. The lifting beam mechanism with retractable protective jaws according to claim 1, characterized in that: The drive assembly includes a hydraulic actuator, with both ends of the hydraulic actuator hinged between the corresponding side of the lifting beam bracket and the protective jaws.

3. The lifting beam mechanism with retractable protective jaws according to claim 1, characterized in that: Several connecting chains are connected below the lower lifting beam, and the lower end of the connecting chains is connected to an electromagnetic chuck.

4. The lifting beam mechanism with retractable protective jaws according to claim 1, characterized in that: A lower motor is connected to the lower lifting beam, and the output end of the lower motor is connected to a lower drive gear, which meshes with the outer circumference of the jaw slewing bearing.

5. A lifting beam mechanism with retractable protective jaws according to claim 1 or 4, characterized in that: It also includes an upper hanging beam, which is connected to a lower hanging beam.

6. The lifting beam mechanism with retractable protective jaws according to claim 5, characterized in that: The upper lifting beam is connected to the lower part of the lifting beam slewing bearing, and the lower lifting beam is connected to the lower part of the lifting beam slewing bearing.

7. A lifting beam mechanism with retractable protective jaws according to claim 6, characterized in that: An upper motor is connected to the upper lifting beam, and the output end of the upper motor is connected to an upper drive gear, which meshes with the outer circumference of the slewing bearing of the lifting beam.

8. The lifting beam mechanism with retractable protective jaws according to claim 1, characterized in that: The protective clamp includes two clamping rods, which are distributed at an acute angle. One clamping rod is hinged to the bracket of the lifting beam and connected to the drive assembly. The other clamping rod is rotated to a horizontal position and then protected under the electromagnetic chuck.

9. A lifting beam mechanism with retractable protective jaws according to claim 8, characterized in that: The two clamps are connected by a circular arc.

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