Rope falling prevention device for fixed pulley of crane

Abstract

The utility model relates to the technical field of crane parts, and discloses a crane fixed pulley anti-rope-off device which comprises a reinforcing and positioning assembly, the reinforcing and positioning assembly is installed in the middle of the top of an anti-rope-off pulley assembly, and a length stretching assembly is installed at the bottom of the anti-rope-off pulley assembly. The bottom of the length stretching assembly is provided with an anti-disengagement adjusting hook assembly. The length stretching component is mounted at the bottom of the device, so that when the device is used and a certain object is transported, the influence that the hook position is shielded by a main body of the device due to the special shape of the object is avoided, and the safety of the device is improved. And at this time, the hook part at the bottom can be extended through the assembly and then fixed, so that a certain height space is provided, and the overlapping work with the main body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crane parts, in particular to a crane fixed pulley anti-rope-slip device. Background Art

[0002] A crane is a multi-action lifting machine capable of vertically lifting and horizontally transporting heavy objects within a certain range. Also known as an overhead crane, overhead crane, or tire crane, its main features include a combined driving and lifting cab. Evolved from crawler cranes, the crawler tracks and running frame are replaced with a tire-covered chassis, overcoming the disadvantage of crawler cranes' track plates damaging the road surface. It is a type of material handling machinery. A bridge crane is a type of lifting equipment used horizontally above workshops, warehouses, and material yards to lift materials. Because its ends rest on tall concrete columns or metal supports, it resembles a bridge. The bridge crane's girth runs longitudinally along tracks laid on elevated platforms, allowing it to fully utilize the space beneath it to lift materials without being obstructed by ground-based equipment. It is the most widely used and most numerous type of lifting machinery. Some cranes operate intermittently, meaning that the corresponding mechanisms for retrieving, transporting, and unloading materials alternate within a single cycle. Cranes are becoming increasingly widespread in the market. Lifting and traveling with a load without outriggers often leads to accidents, and the crane travels faster than crawler cranes. Cranes offer stable operation, a large lifting capacity, and can travel with a load within a specified range. However, the road must be smooth and firm, the tire pressure must meet requirements, and the crane must not be more than 50cm above the ground. Long-distance travel with a load is prohibited. To ensure operational safety, lifting without outriggers is generally prohibited in China. Wire ropes used with cranes include phosphate-coated, galvanized, and smooth-surfaced wire ropes.

[0003] The invention relates to a method for preventing the steel wire rope from falling off the fixed pulley of a crane, comprising a protective cover, a steel wire rope for lifting a load, and an anti-slip mechanism for preventing the steel wire rope from falling off. The anti-slip mechanism comprises a first fixed shaft arranged on the protective cover, a fixed pulley sleeved on the first fixed shaft, and two fixed blocks arranged at both ends of the first fixed shaft. The utility model solves the problem that the lifting mechanism of a small lifting equipment is currently in use, in which the steel wire rope is normally hidden in the wheel groove, and sometimes the steel wire rope jumps out of the wheel groove. When the steel wire rope falls out, the steel wire rope will be stuck or squeezed. The existing anti-slip device mostly arranges a wheel sliding cover on the pulley, but the wheel sliding cover is far away from the slide groove, resulting in limited anti-slip effect, which affects the working safety of the crane.

[0004] The above utility model solves the problem that the lifting mechanism of small lifting equipment is currently in use by arranging a protective cover, a first fixed shaft, a fixed pulley, a fixed block, a sliding cavity, a sliding rod, a spring, a second fixed shaft and an anti-slip roller. Under normal circumstances, the wire rope is hidden in the wheel groove, and sometimes the wire rope jumps out of the wheel groove. When the wire rope comes out, the wire rope will be stuck or squeezed. The existing anti-slip device mostly arranges a wheel sliding cover on the pulley, but the wheel sliding cover is far away from the slide groove, resulting in limited anti-slip effect, affecting the working safety of the crane. However, there is a disadvantage that when the device is used, when transporting some special-shaped objects, because the distance between its hook and the pulley body is relatively close, when limiting and fixing, the pulley bodies will overlap, which in turn affects the work of its hook fixing. Utility Model Content

[0005] The purpose of the utility model is to provide a crane fixed pulley anti-rope-slip device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a crane fixed pulley anti-rope-slip device, comprising a reinforcement positioning component, wherein the reinforcement positioning component is installed at the top middle position of the anti-slip pulley component, a length stretching component is installed at the bottom of the anti-slip pulley component, and an anti-slip adjustment hook component is installed at the bottom of the length stretching component.

[0008] Furthermore, the reinforcement positioning assembly includes a fixing ring, the bottom of the fixing ring is installed with an adjustment rotating shaft 1, the bottom of the adjustment rotating shaft 1 is installed with a connecting bottom plate, and the bottom of the connecting bottom plate is installed on the top of the capping plate.

[0009] Furthermore, the anti-slip pulley assembly includes a clamping side plate, two troughs are formed between the three clamping side plates, a top plate is installed on the top of the trough, and a bottom plate is installed on the bottom, and a positioning pulley is installed in the middle, and a rope is installed on the outside of the positioning pulley.

[0010] Furthermore, the length stretching assembly includes a mounting base plate, a limiting stretching groove is opened in the middle of the mounting base plate, and the mounting base plate is installed at the bottom of the bottom cover plate, a telescopic column is installed inside the limiting stretching groove, a limiting plate is installed on the top of the telescopic column, and a return spring is installed at the bottom of the limiting plate.

[0011] Furthermore, the anti-slip adjustment hook assembly includes a reset limit bottom, which is installed at the bottom of the telescopic column, and an adjustment rotating shaft 2 is installed at its bottom, and an anti-slip silicone coated hook is installed at the bottom of the adjustment rotating shaft 2.

[0012] Furthermore, the clamping side plate includes an assembly hole and a center positioning hole. The assembly holes are opened at the four corners of the clamping side plate, and fixed assembly columns are installed inside them. The center positioning hole is opened in the middle position of the clamping side plate, and a positioning column is installed inside it.

[0013] The utility model has the following beneficial effects:

[0014] (1) The utility model is a crane fixed pulley anti-rope-slip device. By installing a length stretching component at the bottom of the device, when using the device, when transporting a certain object, the main body of the device can avoid the object's special shape from being blocked by the hook position. At this time, the hook part at the bottom can be extended by the component to perform the fixing work, thus providing a certain height space and avoiding overlapping work with the main body.

[0015] (2) The utility model is a fixed pulley anti-rope-slip device for a crane. By not installing a reinforcement positioning component in the device, the device can be positioned by its components when in use, thereby providing a better and more stable fixing work for subsequent transportation and lifting work, and by means of an adjustable rotating shaft 1 provided therein, different angles can be adjusted according to different situations, thereby making the device more flexible and more convenient to use.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a crane fixed pulley anti-rope-slip device according to the utility model;

[0019] Figure 2 This is a schematic structural diagram of a reinforcement and positioning assembly of a fixed pulley anti-rope-slip device for a crane according to the utility model;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of an anti-rope-slip pulley assembly of a fixed pulley anti-rope-slip device for a crane according to the utility model;

[0021] Figure 4 This is a schematic diagram of the expanded structure of a length stretching component of a fixed pulley anti-rope-off device for a crane according to the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] In the figure: 1. Fixed positioning assembly; 2. Anti-slip pulley assembly; 3. Length stretching assembly; 4. Anti-slip adjustment hook assembly; 101. Fixed ring; 102. Adjustment rotation axis 1; 103. Connecting base plate; 201. Clamping side plate; 202. Top plate; 203. Bottom plate; 204. Positioning pulley; 205. Rope; 301. Mounting base plate; 302. Limit stretching groove; 303. Telescopic column; 304. Limit plate; 305. Reset spring; 401. Reset limit bottom; 402. Adjustment rotation axis 2; 403. Anti-slip silicone coated hook; 2011. Assembly hole; 2012. Fixed assembly column; 2013. Center positioning hole; 2014. Positioning column. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 - Figure 4 As shown, the utility model is a crane fixed pulley anti-rope-slip device, comprising a reinforcement positioning component 1, which is installed at the top middle position of an anti-slip pulley component 2, a length stretching component 3 is installed at the bottom of the anti-slip pulley component 2, and an anti-slip adjustment hook component 4 is installed at the bottom of the length stretching component 3.

[0026] By installing a length stretching component 3 at the bottom of the device, when using this device, when transporting a certain object, it is possible to avoid the influence of the main body of the device blocking the hook position due to the irregular shape of the object. At this time, the hook part at the bottom can be extended through the component for fixing, which provides a certain height space and avoids overlapping with the main body.

[0027] The reinforcement positioning component 1 includes a fixing ring 101, and an adjusting rotating shaft 102 is installed at the bottom of the fixing ring 101. A connecting base plate 103 is installed at the bottom of the adjusting rotating shaft 102. The bottom of the connecting base plate 103 is installed on the top of the capping plate 202. The fixing ring 101 is fixed to the corresponding bracket by using a rope. Then, the adjusting rotating shaft 102 at the bottom can be used to adjust the angle of the anti-slip pulley component 2 connected to the connecting base plate 103 at the bottom according to different needs during use, so as to cope with different usage scenarios.

[0028] The anti-slip pulley assembly 2 includes a clamping side plate 201, and two troughs are formed between the three clamping side plates 201. A top plate 202 is installed on the top of the trough, and a bottom plate 203 is installed on the bottom. At the same time, a positioning pulley 204 is installed in the middle, and a rope 205 is installed on the outside of the positioning pulley 204. After the fixation is completed, the positioning pulley 204 is installed between the clamping side plates 201, and then the rope 205 is installed on it. It is then fixed by the clamping side plates 201 installed on both sides, and is surrounded by the top plate 202 and the bottom plate 203 installed on the top and bottom.

[0029] The length stretching component 3 includes a mounting base 301, a limiting stretching groove 302 is provided in the middle of the mounting base 301, and is mounted on the bottom of the bottom cover 203, a telescopic column 303 is installed inside the limiting stretching groove 302, a limiting plate 304 is installed on the top of the telescopic column 303, and a return spring 305 is installed at the bottom of the limiting plate 304. When in use, the length stretching component 3 can be stretched under the action of gravity of the object transported by it, and the limiting plate 304 can be contracted by squeezing the internal return spring 305, thereby extending the telescopic column 303 downward to achieve the working effect of stretching, and when it is no longer transported in the future, the telescopic column 303 is reset and contracted to the inside of the limiting stretching groove 302 by the return spring 305 to complete storage.

[0030] The anti-slip adjustment hook assembly 4 includes a reset limit bottom 401, which is installed at the bottom of the telescopic column 303, and an adjustment rotation axis 2 402 is installed at its bottom, and an anti-slip silicone coated hook 403 is installed at the bottom of the adjustment rotation axis 2 402. By fixing it on the anti-slip silicone coated hook 403, the rotation of the adjustment rotation axis 2 402 at its top can be adjusted as needed, so that the angle transportation adjustment of the object can be realized, and it is connected to the telescopic column 303 through the reset limit bottom 401 at its top.

[0031] The clamping side plate 201 includes an assembly hole 2011 and a center positioning hole 2013. The assembly holes 2011 are opened at the four corners of the clamping side plate 201, and fixed assembly columns 2012 are installed inside them. The center positioning hole 2013 is opened in the middle position of the clamping side plate 201, and a positioning column 2014 is installed inside it. When fixing, the fixed assembly column 2012 is installed inside the assembly hole 2011, and then the positioning column 2014 is installed in the center positioning hole 2013. In this way, the center positioning pulley 204 can be positioned while the fixed assembly is being fixed, so that the overall assembly work can be completed.

[0032] When using this device, first fix the anti-slip pulley assembly 2 by reinforcing the positioning assembly 1. When fixing, fix the fixing ring 101 on the corresponding bracket by using a rope. Then, the anti-slip pulley assembly 2 connected to the connecting base plate 103 at the bottom can be adjusted in angle according to different needs during use through the adjusting rotating shaft 102 at the bottom. This is to facilitate coping with different usage scenarios. When fixing is completed, a positioning pulley 204 is installed between the clamping side plates 201, and then the rope 205 is installed on it. Then, it is fixed by the clamping side plates 201 installed on both sides, and is surrounded by the top plate 202 and the bottom plate 203 installed at the top and bottom. When fixing, install the fixed assembly column 2012 inside the assembly hole 2011, and then install the positioning column 2014 in the center positioning hole 2013. When the object is fixed and assembled, the positioning pulley 204 in the center can be positioned, so that the overall assembly work can be completed. When in use, the length stretching component 3 can be stretched under the action of the gravity of the object being transported. The limit plate 304 can be retracted by squeezing the internal return spring 305, thereby extending the telescopic column 303 downward to achieve the stretching effect. When it is no longer transported, the telescopic column 303 is reset and retracted to the inside of the limit stretching groove 302 by the return spring 305 to complete the storage. When fixing the object, it can be fixedly installed on the non-slip silicone coated hook 403, and then the top adjustment rotating shaft 2 402 can be rotated and adjusted according to needs, so that the angle transportation adjustment of the object can be achieved, and it is connected to the telescopic column 303 through the return limit bottom 401 at the top.

[0033] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A crane fixed pulley anti-rope-off device, comprising a reinforcement positioning assembly (1), characterized in that: The reinforcement positioning assembly (1) is installed at the top middle position of the anti-slip pulley assembly (2), the bottom of the anti-slip pulley assembly (2) is installed with a length stretching assembly (3), and the bottom of the length stretching assembly (3) is installed with an anti-slip adjustment hook assembly (4).

2. The anti-rope-slip device for a crane fixed pulley according to claim 1, characterized in that: The reinforcement positioning assembly (1) comprises a fixing ring (101), an adjusting rotating shaft (102) is installed at the bottom of the fixing ring (101), a connecting base plate (103) is installed at the bottom of the adjusting rotating shaft (102), and the bottom of the connecting base plate (103) is installed on the top of the capping plate (202).

3. The anti-rope-slip device for a crane fixed pulley according to claim 1, characterized in that: The anti-slip pulley assembly (2) comprises a clamping side plate (201), two trough bodies are formed between the three clamping side plates (201), a top plate (202) is installed on the top of the trough body, and a bottom plate (203) is installed on the bottom thereof, and a positioning pulley (204) is installed in the middle thereof, and a rope (205) is installed on the outside of the positioning pulley (204).

4. The anti-rope-slip device for a crane fixed pulley according to claim 1, characterized in that: The length stretching assembly (3) comprises a mounting base plate (301), a limiting stretching groove (302) is provided in the middle of the mounting base plate (301), and the mounting base plate (301) is mounted on the bottom of the bottom cover plate (203), a telescopic column (303) is mounted inside the limiting stretching groove (302), a limiting plate (304) is mounted on the top of the telescopic column (303), and a return spring (305) is mounted on the bottom of the limiting plate (304).

5. The anti-rope-slip device for a crane fixed pulley according to claim 1, characterized in that: The anti-drop adjustment hook assembly (4) comprises a reset limit bottom (401), which is mounted on the bottom of the telescopic column (303), and a second adjustment rotation shaft (402) is mounted on the bottom of the reset limit bottom (401), and a non-slip silicone coated hook (403) is mounted on the bottom of the second adjustment rotation shaft (402).

6. The anti-rope-slip device for a crane fixed pulley according to claim 3, characterized in that: The clamping side plate (201) comprises an assembly hole (2011) and a central positioning hole (2013), wherein the assembly holes (2011) are provided at the four corners of the clamping side plate (201), and fixed assembly columns (2012) are installed therein, and the central positioning hole (2013) is provided at the middle position of the clamping side plate (201), and a positioning column (2014) is installed therein.

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