Lifting appliance locking device

Abstract

The utility model provides a lifting appliance locking device which is used on a portal crane, the portal crane is provided with a walking trolley, the lower portion of the walking trolley is connected with a lifting appliance, the walking trolley is provided with a limiting device, the limiting device comprises a limiting column, a limiting part is arranged below the limiting column, and the limiting part is connected with the lifting appliance. A supporting device is arranged above the lifting appliance, the supporting device comprises a supporting column, a supporting part is arranged above the supporting column, the supporting part corresponds to a limiting part, the limiting column is matched with the supporting column, the limiting column is detachably connected with the supporting column, operation is convenient, and the lifting appliance is prevented from shaking in a non-working state.

Description

Technical Field

[0001] The utility model relates to the technical field of crane equipment, in particular to a sling locking device. Background Art

[0002] Gantry crane is a common lifting equipment, widely used in industries such as industry, ports and construction. When using a gantry crane, it is usually necessary to use a traveling trolley to move it. The traveling trolley can move smoothly along the rails on the main beam of the gantry crane. A sling is connected to the bottom of the traveling trolley to complete the lifting of goods. An anti-collision device is generally installed between the traveling trolley and the sling to ensure a safe distance between the sling and the traveling trolley to prevent the sling from contacting the traveling trolley during the lifting process. When the sling is not in working state, there is a lack of effective limit devices. The sling may shake or even deviate from its original position due to wind factors.

[0003] For example, the patent application number is 202322685526.5, and the publication date is 2024.06.04. The patent document discloses a lifting device rise limiter and a lifting device, which relates to the technical field of lifting equipment and solves the problem in the prior art that the wire rope of the limit weight and the wire rope of the crane hoist often get entangled, affecting normal operation. It includes a base and a rise limit mechanism, and the rise limit mechanism includes a travel switch and a jacking assembly for controlling the on and off of the travel switch. The travel switch is installed on the base, and the jacking assembly is movably connected to the base and the jacking assembly is located below the travel switch. The jacking assembly can move up and down in the vertical direction and trigger the travel switch when it reaches the rise limit position. The cooperation of the jacking assembly and the travel switch is used to protect the rising height of the crane hoist of the bridge crane and prevent it from hitting the top, effectively avoiding the phenomenon of entanglement between the wire ropes, and ensuring the orderly progress of production operations. It has a simple structure and is easy to maintain, which is conducive to production use.

[0004] In the above documents, the spreader pushes the striker rod to move upward, and the striker rod drives the top rod to move upward, which in turn causes the pawl to rotate to trigger the travel switch, thereby short-circuiting the lifting action circuit of the lifting device, that is, the servo motor stops working, causing the lifting action to stop, and stopping the height of the traveling spreader at the rising limit position. It is only for preventing the spreader from hitting the top. When the spreader is in a non-working position and waiting for lifting, the spreader is separated from the device, and it does not limit the movement range of the spreader. In case of strong winds, the spreader may swing with the wind or even have a large displacement. At this time, the travel switch is opened, which is mistakenly judged that the spreader has risen to the rising limit position. At the same time, the swing of the spreader increases the damage of the spreader to other nearby equipment and may cause a safety accident. Summary of the Invention

[0005] The utility model provides a sling locking device which is easy to operate and prevents the sling from shaking when in a non-working state.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a sling locking device, used on a gantry crane, the gantry crane is provided with a traveling trolley, a sling is connected below the traveling trolley, a limiting device is provided below the traveling trolley, the limiting device includes one or more limiting columns, a limiting portion is provided below the limiting column, and one or more supporting devices are provided above the sling, the supporting device includes a supporting column, a supporting portion is provided above the supporting column, the supporting portion and the limiting portion are arranged correspondingly, the limiting column and the support column are matched, and the limiting column and the support column are detachably connected.

[0007] When the sling is not in use, the lifting device is lifted up by the lifting device, and the lifting device is lifted up by the lifting device. When the lifting device is lifted up, the lifting device is lifted up by the lifting device, and the lifting device is lifted up by the lifting device. When the lifting device is lifted up, the lifting device is lifted up by the lifting device, and the lifting device is lifted up by the lifting device. When the lifting device is lifted up, the lifting device is lifted up by the lifting device, and the lifting device is lifted up by the lifting device. When the lifting device is lifted up, the lifting device is lifted up by the lifting device, and the lifting device is lifted up by the lifting device. When the lifting device is lifted up, the lifting device is lifted up by the lifting device, and the lifting device is lifted up by the lifting device. When the lifting device is lifted up, the lifting device is lifted up by the lifting device, and the lifting device is lifted up by the lifting device

[0008] Furthermore, a mounting plate is provided inside the walking trolley, and a mounting seat is provided on the limiting column, the mounting seat is in contact with the mounting plate, and ribs are provided on both sides above the mounting seat, and the ribs are connected to one side of the mounting plate.

[0009] The above setting is that a mounting plate is provided inside the walking trolley, and a mounting seat is provided on the limit column. One side of the mounting seat is abutted against the lower side of the mounting plate, and two rib plates are provided above the mounting seat. The two rib plates are respectively connected to the mounting plates, which can reduce the impact and wear on the limit column during long-term use, and enable the limit column to be firmly connected to the mounting plate.

[0010] Furthermore, a reinforcing rib is provided below the mounting seat, and the reinforcing rib extends from the mounting seat to the limiting portion.

[0011] In the above arrangement, the reinforcing ribs extend from the mounting seat to the limiting portion, which helps to strengthen the overall rigidity of the limiting column, so that the limiting column is not easily deformed when subjected to external force.

[0012] Furthermore, the reinforcing ribs are respectively arranged corresponding to the lower side of the mounting plate and the lower side of the rib plate.

[0013] In the above settings, the positions of the reinforcement ribs correspond to the positions of the mounting plate and the rib plate respectively. The reasonable arrangement of the reinforcement ribs can improve the strength and rigidity of the limit column. After the reinforcement ribs are subjected to force, they can act on the mounting plate and the rib plate through the mounting seat, thereby realizing force dispersion and transmission.

[0014] Furthermore, the limiting portion is a hollow frustum structure.

[0015] In the above arrangement, the limiting portion is in a truncated cone structure, and the middle portion of the truncated cone is hollowed out so that the supporting portion can extend into the limiting portion.

[0016] Furthermore, the support portion is a boss structure.

[0017] In the above arrangement, the supporting portion is in the form of a boss structure, which has good stability and can fit in with the limiting portion.

[0018] Furthermore, there are more than two rib plates, which are symmetrically arranged along the mounting plate. An extension plate is provided at the lower end of the mounting plate, which is symmetrically arranged relative to the rib plate, and the extension plate and the rib plate are evenly arranged along the mounting seat.

[0019] The above arrangement forms an extension plate through the lower end of the mounting plate, and the extension plate and the rib plate are symmetrically arranged on the mounting seat, thereby forming a reinforcement effect on the mounting seat.

[0020] Furthermore, there are more than two reinforcing ribs, and the reinforcing ribs are evenly spaced relative to the outer side wall of the limiting column.

[0021] The above arrangement enables the reinforcing ribs to evenly disperse the forces acting on the limiting columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a diagram of the internal structure of the mobile trolley in this utility model.

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 This is the main view of the mobile vehicle in this utility model.

[0025] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0026] Figure 5 This is the main view of the limiting column in the utility model.

[0027] Figure 6This is a top view of the mobile trolley in the utility model.

[0028] Figure 7 This is the front view of the sling in the utility model.

[0029] Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0030] Explanation of the accompanying figures: 1-mobile trolley; 11-mounting plate; 111-extension plate; 2-limiting column; 21-rib plate; 22-mounting seat; 23-reinforcement rib; 24-limiting part; 3-sling; 4-support column; 41-support part. DETAILED DESCRIPTION

[0031] like Figure 1-8 As shown, a sling locking device is used on a gantry crane. The gantry crane is provided with a traveling trolley, a sling 3 is connected below the traveling trolley, a moving trolley 1 is provided with a limiting device, the limiting device includes a limiting column 2, a limiting portion 24 is provided below the limiting column 2, a supporting device is provided above the sling 3, the supporting device includes a supporting column 4, a supporting portion 41 is provided above the supporting column 4, the supporting portion 41 is provided corresponding to the limiting portion 24, the limiting column 2 is matched with the supporting column 4, the supporting column 4 is detachably connected to the limiting column 2, four limiting columns 2 are provided below the traveling trolley, a limiting portion 24 is provided below the limiting column 2, four supporting columns 4 are provided above the sling 3, and the support column 4 is provided above A support portion 41 is provided, and the support column 4 is arranged opposite to the limit column 2, and the support portion 41 and the limit portion 24 are also matched. In the process of the sling 3 moving up, when the support portion 41 extends into the limit portion 24 and contacts the lower surface of the limit portion 24, the sling 3 no longer moves up, and the abutment between the support column 4 and the limit column 2 can ensure the distance between the moving trolley 1 and the sling 3, avoiding collision caused by the close distance between the sling 3 and the walking trolley, thereby limiting the vertical position of the sling 3, and the support portion 41 can extend into the limit portion 24 and contact the lower surface of the limit portion 24 to limit the horizontal displacement of the sling 3, which helps to avoid accidents caused by instability of the sling 3 when it is not working.

[0032] like Figure 1-5 As shown, a mounting plate 11 is provided inside the walking trolley, and a mounting seat 22 is provided on the limiting column 2, which abuts against the mounting plate 11. Ribs 21 are provided on both sides above the mounting seat 22, and the ribs 21 are connected to one side of the mounting plate 11. A mounting plate 11 is provided inside the walking trolley, and a mounting seat 22 is provided on the limiting column 2, and one side of the mounting seat 22 abuts against the lower side of the mounting plate 11, and two ribs 21 are provided above the mounting seat 22, and the two ribs 21 are respectively connected to the mounting plate 11, which can reduce the impact and wear on the limiting column 2 during long-term use, and can enable the limiting column 2 to be firmly connected to the mounting plate 11.

[0033] A reinforcing rib 23 is provided below the mounting seat 22 , and extends from the mounting seat 22 to the limiting portion 24 . The reinforcing rib 23 extends from the mounting seat 22 to the limiting portion 24 , which helps to strengthen the overall rigidity of the limiting column 2 so that the limiting column 2 is not easily deformed when subjected to external force.

[0034] The reinforcing ribs 23 are respectively arranged corresponding to the lower side of the mounting plate 11 and the lower side of the rib plate 21. The setting positions of the reinforcing ribs 23 correspond to the positions of the mounting plate 11 and the rib plate 21. The reasonable arrangement of the reinforcing ribs 23 can improve the strength and rigidity of the limit column 2. After the reinforcing ribs 23 are subjected to force, they can act on the mounting plate 11 and the rib plate 21 through the mounting seat 22, thereby realizing force dispersion and transmission.

[0035] In this embodiment, an extension plate 111 is provided at the lower end of the mounting plate 11, and the two extension plates 111 are arranged opposite to the rib plate 21. The two rib plates 21 are symmetrically arranged relative to the mounting plate, and the two rib plates 21 and the two extension plates 111 are evenly distributed at the upper end of the mounting seat 22.

[0036] Four reinforcing ribs 23 are provided, and the reinforcing ribs 23 are evenly spaced apart on the outer side wall of the limiting column.

[0037] like Figure 4-8 As shown, the limiting portion 24 is a hollow cone structure, and the middle part of the cone is hollowed out so that the support portion 41 can extend into the limiting portion 24.

[0038] The support portion 41 is a boss structure. The support portion 41 is a boss structure. The boss structure has good stability and can fit with the limiting portion 24 .

[0039] The working principle of the present invention is as follows: four limiting columns 2 are provided under the traveling trolley, and a limiting portion 24 is provided under the limiting columns 2. Four supporting columns 4 are provided above the sling 3, and a supporting portion 41 is provided above the supporting columns 4. The supporting columns 4 are arranged relative to the limiting columns 2, and the supporting portions 41 and the limiting portions 24 are also matched. When the sling 3 is not needed, the lifting device controls the sling 3 to rise. In the process of the sling 3 moving up, when the supporting portion 41 extends into the limiting portion 24 and contacts the lower surface of the limiting portion 24, the lifting device controls the sling 3 to rise. The auxiliary operation allows the limiting part 24 to enter the supporting part 4 to fix the sling 3, and the sling 3 no longer moves up. The abutment between the supporting column 4 and the limiting column 2 can ensure the distance between the moving trolley 1 and the sling 3, avoiding collision caused by the close distance between the sling 3 and the traveling trolley, thereby limiting the vertical position of the sling 3. The supporting part 41 can be extended into the limiting part 24 to contact the lower surface of the limiting part 24, thereby limiting the horizontal displacement of the sling 3, which helps to avoid accidents caused by instability of the sling 3 when it is not working.

Claims

1. A sling locking device for use on a gantry crane, wherein the gantry crane is provided with a traveling trolley, and a sling is connected below the traveling trolley, characterized in that: A limiting device is provided below the traveling trolley, and the limiting device includes one or more limiting columns, and a limiting portion is provided below the limiting columns. A supporting device is provided above the sling, and the supporting device includes one or more supporting columns, and a supporting portion is provided above the supporting columns. The supporting portion and the limiting portion are provided correspondingly, and the limiting columns and the supporting columns are provided to match each other, and the limiting columns and the supporting columns are detachably connected.

2. A sling locking device according to claim 1, characterized in that: A mounting plate is provided inside the walking trolley, and a mounting seat is provided on the limiting column. The mounting seat is in contact with the mounting plate. Rib plates are provided on both sides above the mounting seat, and the rib plates are connected to one side of the mounting plate.

3. The sling locking device according to claim 2, characterized in that: A reinforcing rib is provided below the mounting seat, and the reinforcing rib extends from the mounting seat to the limiting portion.

4. A sling locking device according to claim 3, characterized in that: The reinforcing ribs are respectively arranged corresponding to the lower side of the mounting plate and the lower side of the rib plate.

5. The sling locking device according to claim 1, characterized in that: The limiting portion is in a hollow frustum structure.

6. The sling locking device according to claim 1, characterized in that: The supporting portion is in a boss structure.

7. The sling locking device according to claim 1, characterized in that: There are more than two ribs, which are symmetrically arranged along the mounting plate. An extension plate is provided at the lower end of the mounting plate. The extension plate is symmetrically arranged relative to the ribs, and the extension plate and the ribs are evenly arranged along the mounting seat.

8. The sling locking device according to claim 1, characterized in that: There are more than two reinforcing ribs, and the reinforcing ribs are evenly spaced relative to the outer side wall of the limiting column.

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