Anti-falling self-locking structure of elevator

Abstract

The anti-falling self-locking structure comprises a base, a lifting seat, rollers and a lifting guide rail, the lifting seat is provided with paired lifting frames, an anti-falling assembly and an ejection assembly, the anti-falling assembly comprises a movable plate and a connecting plate, the movable plate is provided with first positioning columns staggered with the lifting frames, and the connecting plate is provided with second positioning columns staggered with the lifting frames. One end of the connecting plate is rotationally connected with the first positioning column, the other end of the connecting plate is fixedly connected with the lifting frame, a protruding anti-falling block is arranged at the end, away from the first positioning column, of the movable plate, an anti-falling strip matched with the anti-falling block in an inserted mode is arranged on the base, and limiting blocks abutting against the movable plate are arranged on the upper side and the lower side of the movable plate respectively. When the steel cable is broken or disjointed, the anti-falling assembly and the reset assembly can rapidly conduct self-locking, and falling is prevented.

Description

Technical Field

[0001] The utility model relates to a self-locking structure for preventing a hoist from falling. Background Art

[0002] Elevators are usually used to lift goods, but as the scene changes, some people also use them to raise the height of intelligent robots, so that the intelligent robots can enter the channels of different levels through the elevator. Existing elevators usually rely on sensors for detection and lock the steel cables through clamping devices, but they cannot effectively prevent falls when the steel cables break. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a self-locking structure for preventing a hoist from falling, which can rely on the anti-falling component to self-lock when the pulling rope breaks, thereby preventing the hoist from falling to the bottom.

[0004] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a self-locking structure for preventing a hoist from falling, comprising a base, a lifting seat, rollers and a lifting guide rail; the lifting seat is provided with a pair of lifting frames, anti-falling components and ejection components; the anti-falling components include a movable plate and a connecting plate; the movable plate is provided with a first positioning column which is misaligned with the lifting frame; one end of the connecting plate is rotatably connected to the first positioning column, and the other end is fixedly connected to the lifting frame; a raised anti-falling block is provided at one end of the movable plate away from the first positioning column; an anti-falling strip which is plugged into and matched with the anti-falling block is provided on the base; and limit blocks which abut against the movable plate are respectively provided on the upper and lower sides.

[0005] As a further improvement of the utility model, the ejection assembly includes a second positioning column installed on the movable plate, a third positioning column installed on the lifting seat, and an ejection spring, the ejection spring is respectively hooked on the second positioning column and the third positioning column, the movable plate is provided with an inclined surface matching the ejection spring, and the two ends of the ejection spring are respectively abutted against the inclined surface and the third positioning column.

[0006] As a further improvement of the utility model, a guide surface is provided at the insertion point between the anti-falling strip and the anti-falling block.

[0007] As a further improvement of the present invention, the movable plate is provided with grooves at positions corresponding to the first positioning column and the second positioning column, and the first positioning column and the second positioning column are installed in the grooves.

[0008] As a further improvement of the utility model, a pressure rod is threadedly connected between the limit blocks, and the pressure rod abuts against the surface of the movable plate.

[0009] The beneficial effect of the utility model is that when the steel cable breaks or becomes disjointed, the anti-fall component and the reset component can quickly self-lock to prevent falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic cross-sectional view of the overall structure of an embodiment of the utility model.

[0011] Figure numbers: 1. lifting seat; 2. roller; 3. lifting guide rail; 4. lifting frame; 5. pulley; 6. movable plate; 7. connecting plate; 8. first positioning column; 9. anti-fall block; 10. anti-fall strip; 11. limit block; 12. second positioning column; 13. third positioning column; 14. ejection spring; 15. inclined surface; 16. groove; 17. pressure rod. DETAILED DESCRIPTION

[0012] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0013] Reference Figure 1 As shown, a self-locking structure for preventing a hoist from falling comprises a base, a lifting seat 1, a roller 2 and a lifting guide rail 3, wherein the roller 2 is mounted on the lifting seat 1, and the lifting guide rails 3 are respectively arranged on both sides of the lifting seat 1 and cooperate with the roller 2, and the lifting seat 1 is provided with a pair of lifting frames 4, an anti-falling assembly and an ejection assembly, wherein the pair of lifting frames 4 are mounted in the middle of the lifting seat 1, and the pair of anti-falling assemblies are respectively mounted on both sides below the lifting frames 4, and the pair of ejection assemblies are arranged below the anti-falling assembly for ejection and resetting, and the lifting frame 4 is provided with a pulley 5 for connecting a steel cable for lifting, and the anti-falling assembly comprises a movable plate 6 and a connecting plate 7, and the movable plate 6 is provided with a first positioning column 8 which is misaligned with the lifting frame 4, and the first positioning column 8 is mounted on the outer side, and one end of the connecting plate 7 is connected to the first positioning column 8. The positioning column 8 is rotatably connected, and its other end is fixedly connected to the lifting frame 4. The end of the movable plate 6 away from the first positioning column 8 is provided with a raised anti-falling block 9, and the base is provided with an anti-falling strip 10 which is plugged into and matched with the anti-falling block 9. The anti-falling strip 10 is provided with a number of slots that cooperate with the anti-falling block 9. The upper and lower sides of the movable plate 6 are respectively provided with limit blocks 11 that abut against it. When the lifting frame 4 is lifted upward, since the first positioning column 8 is arranged on the outer side and the movable direction of the movable plate 6 is limited by the limit blocks 11, the connecting plate 7 drives the movable plates 6 on both sides to approach the middle until they abut against each other. At this time, the anti-falling block 9 and the anti-falling strip 10 are disengaged for lifting. When the movable plate 6 loses the pulling force brought by the lifting frame 4, the ejection assembly pushes the movable plate 6 to reset so that the anti-falling block 9 and the anti-falling strip 10 are plugged in and limited.

[0014] The ejection assembly includes a second positioning column 12 installed on the movable plate 6, a third positioning column 13 installed on the lifting seat 1, and an ejection spring 14. The ejection spring 14 is hooked on the second positioning column 12 and the third positioning column 13 respectively. The movable plate 6 is provided with an inclined surface 15 that cooperates with the ejection spring 14. The two ends of the ejection spring 14 are respectively abutted on the inclined surface and the third positioning column 13. This arrangement enables the lifting seat 1 to quickly reset and self-lock the movable plate 6 when the lifting tension is lost. A guide surface is provided at the joint of the anti-falling strip 10 and the anti-falling block 9. The guide surface is provided to enable the lifting seat 1 to continuously decelerate during the descent process to avoid some In the case of overweight, the anti-fall block 9 breaks, and the movable plate 6 is provided with a groove 16 corresponding to the position of the first positioning column 8 and the second positioning column 12. The first positioning column 8 and the second positioning column 12 are installed in the groove 16. The first positioning column 8 and the second positioning column 12 are installed in the groove 16 to prevent the connecting plate 7 or the ejection spring 14 from falling out. Correspondingly, in order to prevent the ejection spring 14 from falling out on the third positioning column 13, a nut is provided on the third positioning column 13. A pressure rod 17 is threadedly connected between the limit blocks 11, and the pressure rod 17 abuts against the surface of the movable plate 6. The pressure rod 17 is arranged to abut the movable plate 6 to prevent the movable plate 6 from falling out of the limit block 11.

[0015] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A self-locking structure for preventing a hoist from falling, comprising a base, a hoisting seat, a roller, and a hoisting guide rail, characterized in that: The lifting seat is provided with a pair of lifting frames, anti-falling components, and ejection components. The anti-falling components include a movable plate and a connecting plate. The movable plate is provided with a first positioning column that is misaligned with the lifting frame. One end of the connecting plate is rotatably connected to the first positioning column, and the other end is fixedly connected to the lifting frame. A raised anti-falling block is provided at one end of the movable plate away from the first positioning column. The base is provided with an anti-falling strip that is plugged into and cooperates with the anti-falling block. The upper and lower sides of the movable plate are respectively provided with limit blocks that abut against it.

2. The anti-fall self-locking structure of the hoist according to claim 1 is characterized in that: The ejection assembly includes a second positioning column installed on the movable plate, a third positioning column installed on the lifting seat, and an ejection spring. The ejection spring is hooked on the second positioning column and the third positioning column respectively. The movable plate is provided with an inclined surface that cooperates with the ejection spring. The two ends of the ejection spring are respectively abutted against the inclined surface and the third positioning column.

3. The anti-fall self-locking structure of the hoist according to claim 1 is characterized in that: A guide surface is provided at the insertion point of the anti-falling strip and the anti-falling block.

4. The anti-fall self-locking structure of the hoist according to claim 1 is characterized in that: The movable plate is provided with grooves at positions corresponding to the first positioning column and the second positioning column, and the first positioning column and the second positioning column are installed in the grooves.

5. The anti-fall self-locking structure of the hoist according to claim 1 is characterized in that: A pressure rod is threadedly connected between the limit blocks, and the pressure rod abuts against the surface of the movable plate.

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