Container spreader

Abstract

The container lifting device comprises a rectangular lifting frame and four or more than four spin locks symmetrically arranged on the rectangular lifting frame, wherein the spin lock comprises a shell fixed on the rectangular lifting frame and a lock tongue movably arranged in the shell, the lock tongue can rotate in the shell and can also move vertically in the shell, and a tapered lock head at the lower end of the lock tongue can be retracted into the lower opening of the shell or extended out of the lower opening. The container lifting device is provided with four or more than four spin locks, and each spin lock can be vertically adjusted, so that the lifting of containers of various specifications can be realized, and the device has good versatility.

Description

Technical Field

[0001] This utility model relates to a container spreader and belongs to the technical field of container lifting equipment. Background Technology

[0002] Traditional container spreaders, as shown in the Chinese utility model patent "Authorization Announcement No.: CN2095188U; Authorization Announcement Date: 1992.02.05; Name: Floating Twist Lock Non-Powered Automatic Container Spreader", consist of a rectangular spreader and twist locks placed at the four corners of the rectangular spreader. The rotation of each twist lock is driven by a central drive rod through a transmission link, and the rotation of the drive rod is achieved by reciprocating the lifting of a weight component in the middle of the drive rod. This solution achieves automatic locking and unlocking of the spreader and container without the need for additional power, which is an extremely ingenious design. However, this solution also has shortcomings. For example, it only has four twist locks, making it unable to lift containers of different sizes. Utility Model Content

[0003] The purpose of this utility model is to provide a new container spreader that addresses the aforementioned technical deficiencies of traditional non-powered container spreaders. This container spreader is equipped with four or more twist locks, each of which is vertically adjustable, enabling the lifting of containers of various sizes and exhibiting good versatility.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A container spreader includes a rectangular spreader and four or more rotary locks symmetrically arranged on the rectangular spreader. Each rotary lock includes a housing fixed on the rectangular spreader and a locking tongue movably configured with the housing. The locking tongue can rotate within the housing and move vertically within the housing. The conical locking head at the lower end of the locking tongue can retract into the lower opening of the housing or extend out of the lower opening as needed.

[0006] By adopting the above technical solution, a container spreader is provided, which is equipped with more than four twist locks, and each twist lock can be vertically adjusted, enabling the lifting of containers of various specifications and having good versatility.

[0007] The present invention is further configured as follows: the middle section of the latch is a sliding rod with several axial straight grooves / ridges on its outer surface, the upper end of the latch is a pull ring located on the outer side of the outer shell and the rectangular hanger, a drive ring connected to the drive mechanism is sleeved on the sliding rod, the inner ring of the drive ring is provided with axial straight ridges / grooves corresponding to the axial straight grooves / ridges on the outer surface of the sliding rod, a limit hole is provided on the latch, and a limit plug for vertically limiting the latch is provided in the limit hole.

[0008] By adopting the above technical solution, the specific structure of the rotary lock was defined.

[0009] A further feature of this invention is that the rectangular hanger includes left and right side beams and four connecting beams placed between the left and right side beams, and the left and right side beams and the connecting beams are all rectangular hollow beams.

[0010] By adopting the above technical solution, the specific structure of the rectangular hanger is defined. The rectangular hollow beam not only has good structural strength, but also facilitates the internal installation of various transmission components. This ensures aesthetics, avoids exposing the transmission components, and effectively extends the service life of the transmission components.

[0011] A further feature of this invention is that each of the left and right side beams is equipped with four rotary locks.

[0012] By adopting the above technical solution, the number of rotary locks on the left and right side beams is limited. During use, the vertical height of the locking tongue in each rotary lock can be adjusted as needed, thereby enabling the lifting of containers of different sizes.

[0013] A further feature of this invention is that a support sleeve corresponding to the locking tongue is rotatably provided above the rectangular hanger, and the side wall of the support sleeve is provided with a through hole corresponding to the limiting hole on the locking tongue.

[0014] A further feature of this invention is that the limiting plug is a bolt.

[0015] By adopting the above technical solution, a rotatable support sleeve is set on the upper surface of the rectangular hanger. After the lock tongue height is adjusted and the lock tongue is limited by the limit plug, the rotatable support sleeve can rotate synchronously with the lock tongue during use. This solution can effectively limit the height of the lock tongue while ensuring that the lock tongue has a good rotation state.

[0016] A further feature of this invention is that a retaining ring is provided between the conical lock head and the sliding rod, and an annular stop corresponding to the retaining ring is provided at the lower opening of the outer shell.

[0017] By adopting the above technical solution, the vertical load-bearing capacity of the lifting device for the locking tongue has been further improved.

[0018] A further feature of this invention is that the drive mechanism includes a drive rod with a fixed triangular bracket, the drive rod passes through all the connecting beams vertically, and a transmission mechanism is installed in each connecting beam. The transmission mechanism includes a turntable that can be rotatably installed in the connecting beam, a driven bevel gear is coaxially fixed on the turntable, and connecting rods are hinged to both sides of the turntable. The other ends of the two connecting rods are respectively hinged to the drive rings at both ends of the connecting beam. A drive bevel gear is provided on the drive rod for each driven gear in each connecting beam.

[0019] By adopting the above technical solution, the driving method of each rotary lock is limited. This solution can realize the rotation of all rotary locks with a single driving rod. The design is novel and ingenious, and has outstanding practicality.

[0020] The main beneficial effects of this utility model are:

[0021] 1. This utility model is equipped with more than four rotary locks, and each rotary lock can be vertically adjusted, which can realize the hoisting of containers of various specifications and has good versatility.

[0022] 2. This utility model uses rectangular hollow beams to form a rectangular hanger. The rectangular hollow beams not only have good structural strength, but also facilitate the internal installation of various transmission components. This ensures aesthetics and avoids exposing the transmission components, effectively extending their service life.

[0023] 3. This utility model has a rotatable support sleeve on the upper surface of the rectangular hanger. After the height of the lock tongue is adjusted and the lock tongue is limited by the limiting plug, the rotatable support sleeve can rotate synchronously with the lock tongue when in use. This solution can effectively limit the height of the lock tongue while ensuring that the lock tongue has a good rotation state.

[0024] 4. This utility model achieves the driving of all rotary locks with only one drive lever, without affecting the vertical adjustment of each rotary lock. This solution is novel, reliable, and has outstanding practicality. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of 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.

[0026] Figure 1 This is a front view structural diagram of this utility model;

[0027] Figure 2 This is a top view of the structure of this utility model;

[0028] Figure 3 yes Figure 1 Schematic diagram of the structure of section AA in the middle;

[0029] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle BB section;

[0030] Figure 5 yes Figure 4 Enlarged view of point C in the middle;

[0031] Figure 6 This is a schematic diagram of the two states of the rotary lock in this utility model;

[0032] Figure 7 This is a schematic diagram of the triangular tie rod structure in this utility model;

[0033] Figure 8 This is a structural schematic diagram of a crane that utilizes this utility model.

[0034] In the diagram, 1. Column; 2. Crossbeam; 3. Moving trolley; 4. Winding device; 5. Lifting device; 51. Rectangular hanger; 511. Left and right side beams; 512. Connecting beam; 52. Twisted lock; 521. Outer shell; 522. Annular stop; 523. Conical lock head; 524. Retaining ring; 525. Sliding rod; 526. Limiting hole; 527. Pull ring; 528. Support sleeve; 529. Limiting plug; 531. Triangular tie; 532. Drive rod; 533. Drive bevel gear; 534. Driven gear; 535. Turntable; 536. Connecting rod; 537. Drive ring. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] Example 1:

[0037] like Figures 1 to 8 As shown, a container spreader includes a rectangular spreader 51 and eight rotary locks 52 symmetrically arranged on the rectangular spreader 51. Each rotary lock 52 includes a housing 521 fixed on the rectangular spreader 51 and a locking tongue movably configured with the housing 521. The locking tongue can rotate within the housing 521 and move vertically within the housing 521. The conical locking head 522 at the lower end of the locking tongue can be retracted into the lower opening of the housing 521 or extended out of the lower opening as needed.

[0038] The rectangular hanger 51 includes left and right side beams 511 and four connecting beams 512 arranged between the left and right side beams 511. The left and right side beams 511 and the connecting beams 512 are all rectangular hollow beams. Each of the left and right side beams 511 is equipped with four rotary locks 52.

[0039] The middle section of the latch is a sliding rod 525 with several axial straight grooves / ridges on its outer surface. The upper end of the latch is a pull ring 527 located on the outside of the outer shell 521 and the rectangular hanger 51. A drive ring 537 connected to the drive mechanism is fitted on the sliding rod 525. The inner ring of the drive ring 537 is provided with axial straight ridges / grooves corresponding to the axial straight grooves / ridges on the outer surface of the sliding rod 525. The latch is provided with a limit hole 526, and a limit plug 529 for vertically limiting the latch is fitted in the limit hole 526. The limit plug 529 is a bolt. A support sleeve 528 corresponding to the latch is rotatably provided above the rectangular hanger 51. The side wall of the support sleeve 528 is provided with a through hole corresponding to the limit hole 526 on the latch. A retaining ring 524 is provided between the conical lock head 523 and the sliding rod 525. An annular stop 522 corresponding to the retaining ring 524 is provided at the lower opening of the outer shell 521.

[0040] The drive mechanism includes a drive rod 532 with a fixed triangular bracket 531. The drive rod 532 passes through all the connecting beams 512 in a vertical manner. A transmission mechanism is installed in each connecting beam 512. The transmission mechanism includes a turntable 535 that can be rotatably installed in the connecting beam 512. A driven bevel gear 534 is coaxially fixed on the turntable 535. Connecting rods 536 are hinged to both sides of the turntable 535. The other ends of the two connecting rods 536 are respectively hinged to the drive rings 537 at both ends of the connecting beam 512. A drive bevel gear 533 is provided on the drive rod 532 for each driven gear 534 in each connecting beam 512.

[0041] A container production crane using the new type of container spreader includes two columns 1 that are slidably mounted on a ground track, a crossbeam 2 between the two columns 1, a trolley 3 that is slidably mounted on the crossbeam 2, a winding device 4 that is fixed on the trolley 3, and the winding device 4 is fixed to the container spreader 5 by a pull rope.

[0042] Operating principle:

[0043] When it is necessary to lift a large container, the conical lock head 522 of the four outer turnlocks 52 extends out of the lower opening of the outer shell 521, and the conical lock head 522 of the four middle turnlocks 52 retracts into the lower opening of the outer shell 521.

[0044] When it is necessary to lift a small container, the conical lock head 522 of the four outer turnlocks 52 is retracted into the lower opening of the outer shell 521, and the conical lock head 522 of the four middle turnlocks 52 is extended out of the lower opening of the outer shell 521.

[0045] When the pull rope on the winding device 4 pulls the triangular pull frame 531 upwards and backwards, the counterweight 53 will fall back and forth to both sides of the triangular trash can 531, thereby realizing the reciprocating swing of the drive rod 532, which in turn realizes the reciprocating rotation of the turntable 535. The reciprocating rotation of the turntable 535 will drive the locking tongue to reciprocate through the connecting rod 536. The reciprocating rotation of the locking tongue can realize the locking and unlocking of the container connection part.

Claims

1. A container spreader, characterized in that: It includes a rectangular hanger (51) and four or more rotary locks (52) symmetrically arranged on the rectangular hanger (51). The rotary lock (52) includes a housing (521) fixed on the rectangular hanger (51) and a locking tongue movably configured with the housing (521). The locking tongue can rotate inside the housing (521) and can also move vertically inside the housing (521). The conical lock head (523) at the lower end of the locking tongue can be retracted into the lower opening of the housing (521) or extended out of the lower opening as needed.

2. The container spreader according to claim 1, characterized in that: The middle section of the latch is a sliding rod (525) with several axial straight grooves / edges on its outer surface. The upper end of the latch is a pull ring (527) located on the outside of the outer shell (521) and the rectangular hanger (51). A drive ring (537) connected to the drive mechanism is sleeved on the sliding rod (525). The inner ring of the drive ring (537) is provided with axial straight edges / grooves corresponding to the axial straight grooves / edges on the outer surface of the sliding rod (525). A limit hole (526) is provided on the latch. A limit plug (529) for vertically limiting the latch is provided in the limit hole (526).

3. A container spreader according to claim 2, characterized in that: The rectangular hanger (51) includes left and right side beams (511) and four connecting beams (512) placed between the left and right side beams (511). The left and right side beams (511) and the connecting beams (512) are all rectangular hollow beams.

4. A container spreader according to claim 3, characterized in that: Each of the left and right side beams (511) is equipped with four rotary locks (52).

5. A container spreader according to claim 4, characterized in that: The rectangular hanger (51) is rotatably provided with a support sleeve (528) corresponding to the lock tongue, and the side wall of the support sleeve (528) is provided with a through hole corresponding to the limiting hole (526) on the lock tongue.

6. A container spreader according to claim 5, characterized in that: The limiting plug (529) is a bolt.

7. A container spreader according to claim 2, characterized in that: A retaining ring (524) is provided between the conical lock head (523) and the sliding rod (525), and an annular stop (522) corresponding to the retaining ring (524) is provided at the lower opening of the outer shell (521).

8. A container spreader according to claim 4, characterized in that: The drive mechanism includes a drive rod (532) with a fixed triangular bracket (531). The drive rod (532) passes through all the connecting beams (512) vertically. A transmission mechanism is installed in each of the connecting beams (512). The transmission mechanism includes a turntable (535) that is rotatably installed in the connecting beam (512). A driven bevel gear (534) is coaxially fixed on the turntable (535). Connecting rods (536) are hinged to both sides of the turntable (535). The other ends of the two connecting rods (536) are respectively hinged to the drive rings (537) at both ends of the connecting beam (512). A drive bevel gear (533) is provided on the drive rod (532) for each driven bevel gear (534) in the connecting beam (512).

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