Anti-derailment safety protection device for pulley block of crane

Abstract

The utility model discloses an anti-derailment safety protection device for a pulley block of a crane, which relates to the technical field of cranes and comprises a mounting sleeve, a pulley body is mounted in the mounting sleeve, a pulley groove is arranged on the surface of the pulley body, two fixing seats are fixedly mounted on two sides of the pulley body in the mounting sleeve, and the two fixing seats are arranged in the mounting sleeve. Protection assemblies are detachably mounted on the top surfaces of the two fixing seats, each protection assembly comprises a mounting seat, the protection assemblies are mounted and positioned on the fixing seats under the cooperation of two positioning inserting pieces on the bottom surfaces of the mounting seats, and after the protection assemblies are mounted and positioned, the protection assemblies are fixed on the fixing seats through positioning assemblies; under the cooperation of the limiting wheels in the two protection assemblies, the pulley groove for installing the hoisting steel wire rope is limited, and the situation that the hoisting steel wire rope is in contact with the ground or a hoisted object due to a hook and falls off from the pulley groove due to outward tension when the steel wire rope continues to descend, and normal hoisting work of a crane is affected is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist, concretely is a hoist pulley block anti-derailing safety device. BACKGROUND

[0002] The pulley block is hoisting machinery spare, is the fixed pulley that cooperates with the hook group work, is fixed on the structure, it can save the force and can change the force direction of action.

[0003] However, the existing hoist pulley block is only through the limiting slot of pulley surface to complete the limiting work of hoisting steel wire rope when using with hoisting steel wire rope, when the hoisting steel wire rope continues to descend because the hook contacts the ground or the object of hoisting, the steel wire rope is easy to expand outward in the pulley groove of pulley, causes the steel wire rope to fall off from the pulley groove of pulley, influences the normal hoisting work of hoist, and appears the security risk. UTILITY MODEL CONTENTS

[0004] In order to solve the steel wire rope in the pulley groove of pulley easy to expand outward, cause the steel wire rope to fall off from the pulley groove of pulley, influence the normal hoisting work of hoist, and appear the security risk problem, the utility model discloses the purpose in providing a hoist pulley block anti-derailing safety device.

[0005] In order to solve the above technical problem, the utility model adopts the following technical scheme: a hoist pulley block anti-derailing safety device, including the installation sleeve, the installation sleeve is installed in the pulley body, the pulley body surface is equipped with pulley groove, the both sides of the installation sleeve in the pulley body are fixedly installed with fixed seat, the number of fixed seat is two, the top surface of two fixed seat can detachably install with the protection assembly, the protection assembly includes the mounting seat, the bottom surface both sides of the mounting seat are fixedly installed with the positioning insert, the positioning insert is slidably inserted in the mounting seat, the top surface of the mounting seat is fixedly installed with the rotating seat in the middle, the rotating seat is rotatably installed with the limit wheel, the limit wheel is mutually matched with the pulley groove, the mounting seat top surface one side is fixedly installed with the positioning assembly in the middle.

[0006] Preferably, the positioning assembly includes a positioning member, a clamping groove is formed in the middle of one side of the top surface of the fixed seat, the positioning member is slidably clamped in the clamping groove, a guide member is symmetrically installed in the positioning member, the number of guide members is two and they slide relative to each other in the positioning member, a positioning latch is fixedly installed on one side of each of the two guide members, the number of positioning latches is two, a return spring is symmetrically installed between the two guide members, the two positioning latches are oppositely inserted in the clamping groove on both sides through the guide member and the return spring, the positioning assembly and the protection assembly are mutually matched, a push-pull member is fixedly installed on one side of the surface of the guide member through a connecting member, the push-pull member slides on one side of the surface of the positioning member, and the push-pull member and the guide member are mutually matched.

[0007] Preferably, the card slot is provided with a slot on both sides, the positioning plug is slidably inserted into the slot, the top surface of the fixing seat is symmetrically provided with a positioning groove, the positioning plug is slidably inserted into the positioning groove, the bottom surface of the mounting sleeve is fixedly provided with a hook in the middle, the hook cooperates with the mounting sleeve, the middle of the pulley body is fixedly provided with a rotating shaft, both ends of the rotating shaft are provided with bearings, the number of bearings is two, and the two bearings are fixedly installed on both sides of the mounting sleeve.

[0008] Compared with the prior art, the utility model has the advantages that:

[0009] 1、In the utility model, the installation and positioning of the protection assembly on the fixing seat are completed under the cooperation of the two positioning plugs on the bottom surface of the mounting seat, the fixing of the protection assembly on the fixing seat is completed through the positioning assembly after the installation and positioning of the protection assembly are completed, the pulley groove for installing the hoisting steel wire rope is limited under the cooperation of the limiting wheels in the two protection assemblies, the hoisting steel wire rope is prevented from falling off from the pulley groove due to the outward tension of the steel wire rope caused by the contact between the hook and the ground or the hoisted object, and the normal hoisting work of the crane is affected;

[0010] 2、In the utility model, when the protection assembly needs to be disassembled, the positioning plug of the positioning assembly is taken out from the corresponding slot, and the protection assembly can be taken off from the fixing seat through the positioning plug, so that the disassembly is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0012] Figure 1 It is the overall structure schematic view of the utility model,

[0013] Figure 2 It is the structure schematic view of the fixing seat cooperating with the protection assembly of the utility model,

[0014] Figure 3 It is the internal structure sectional view of the positioning assembly of the utility model,

[0015] Figure 4 It is the internal structure schematic view of the mounting sleeve of the utility model.

[0016] In the diagram: 1. Mounting sleeve; 2. Pulley body; 21. Pulley groove; 22. Rotating shaft; 23. Bearing; 3. Fixed base; 31. Slot; 311. Slot; 32. Positioning slot; 4. Protective component; 41. Mounting base; 42. Rotating base; 43. Limiting wheel; 44. Positioning plug; 5. Positioning component; 51. Positioning element; 52. Guide element; 53. Positioning pin; 54. Return spring; 55. Push-pull element; 6. Hook. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Figures 1-4 As shown, this utility model provides a crane pulley block anti-derailment safety protection device, including a mounting sleeve 1, a pulley body 2 installed inside the mounting sleeve 1, a pulley groove 21 opened on the surface of the pulley body 2, two fixing seats 3 fixedly installed on both sides of the pulley body 2 inside the mounting sleeve 1, and a protective component 4 detachably installed on the top surface of the two fixing seats 3. The protective component 4 includes a mounting seat 41, positioning plugs 44 fixedly installed on both sides of the bottom surface of the mounting seat 41, the positioning plugs 44 slidably inserted into the mounting seat 41, a rotating seat 42 fixedly installed in the middle of the top surface of the mounting seat 41, a limit wheel 43 rotatably installed in the rotating seat 42, the limit wheel 43 cooperates with the pulley groove 21, and a positioning component 5 fixedly installed in the middle of one side of the top surface of the mounting seat 41.

[0019] The pulley body 2 is installed by mounting sleeve 1, and the corresponding protective components 4 are installed and fixed by two fixed seats 3 respectively. With the cooperation of two positioning plugs 44 on the bottom surface of mounting seat 41, the protective components 4 are installed and positioned on the fixed seat 3. After the protective components 4 are installed and positioned, the protective components 4 are fixed on the fixed seat 3 by positioning component 5. The limit wheel 43 is installed and positioned by rotating seat 42. The limit wheel 43 rotates in the rotating seat 42 by rotating component. With the cooperation of the limit wheels 43 in the two protective components 4, the pulley groove 21 on which the lifting wire rope is installed is limited, so as to prevent the lifting wire rope from falling out of the pulley groove 21 due to the outward tension when the hook 6 comes into contact with the ground or the object being lifted and the wire rope continues to descend, thus affecting the normal lifting operation of the crane.

[0020] The positioning assembly 5 comprises a positioning piece 51, a clamping groove 31 is formed in the middle of the top surface of the fixing seat 3, the positioning piece 51 is slidably clamped in the clamping groove 31, guide pieces 52 are symmetrically installed in the positioning piece 51, the number of the guide pieces 52 is two and they slide in the positioning piece 51, positioning pins 53 are fixedly installed on one side of each of the two guide pieces 52, the number of the positioning pins 53 is two, a return spring 54 is symmetrically installed between the two guide pieces 52, the two positioning pins 53 are oppositely inserted in the two sides of the clamping groove 31 through the guide pieces 52 and the return spring 54, the positioning assembly 5 cooperates with the protection assembly 4, when the positioning piece 51 of the positioning assembly 5 is completely clamped into the corresponding clamping groove 31, the positioning of the protection assembly 4 on the fixing seat 3 is completed, after the positioning of the protection assembly 4 is completed, the two guide pieces 52 and the two return springs 54 in the positioning piece 51 cooperate to control the two positioning pins 53 to be inserted into the corresponding insertion grooves 311, thereby completing the installation and fixation of the protection assembly 4 on the fixing seat 3, when the protection assembly 4 needs to be disassembled, the positioning pins 53 of the positioning assembly 5 are taken out of the corresponding insertion grooves 311, and then the protection assembly 4 can be taken off from the fixing seat 3 through the positioning plug 44, which is convenient and fast.

[0021] A push-pull piece 55 is fixedly installed on one side of the surface of the guide piece 52 through a connecting piece, the push-pull piece 55 slides on one side of the surface of the positioning piece 51, the push-pull piece 55 cooperates with the guide piece 52, the guide piece 52 drives the corresponding positioning pin 53 to slide through the push-pull piece 55, and the normal work of the positioning assembly 5 is ensured.

[0022] Insertion grooves 311 are formed in the two sides of the clamping groove 31, the positioning pin 53 is slidably inserted in the insertion groove 311, and the insertion and positioning of the corresponding positioning pin 53 are completed through the insertion grooves 311 formed in the two sides of the clamping groove 31.

[0023] Positioning grooves 32 are symmetrically formed in the top surface of the fixing seat 3, the positioning plug 44 is slidably inserted in the positioning groove 32, and the insertion and positioning of the corresponding positioning plug 44 are completed through the positioning grooves 32 formed in the top surface of each fixing seat 3.

[0024] A hook 6 is fixedly installed in the middle of the bottom surface of the mounting sleeve 1, the hook 6 cooperates with the mounting sleeve 1, is installed below the mounting sleeve 1 and is fixed, and the hook 6 is used for hanging and taking the articles to be hoisted.

[0025] A rotating shaft 22 is fixedly installed in the middle of the pulley body 2, bearings 23 are sleeved on the two ends of the rotating shaft 22, the number of the bearings 23 is two, the two bearings 23 are fixedly installed in the two sides of the mounting sleeve 1, the installation and positioning of the pulley body 2 in the mounting sleeve 1 are completed through the bearings 23, the rotating shaft 22 controls the pulley body 2 to rotate in the mounting sleeve 1 through the two bearings 23, and the pulley body 2 cooperates with the hoisting steel wire rope to lift.

[0026] Working principle: under the cooperation of two positioning inserts 44 on the bottom surface of the mounting seat 41, the installation and positioning of the protection assembly 4 on the fixing seat 3 is completed, after the installation and positioning of the protection assembly 4 is completed, the fixing of the protection assembly 4 on the fixing seat 3 is completed through the positioning assembly 5, the installation and positioning of the limiting wheel 43 is completed through the rotating seat 42, the limiting wheel 43 rotates in the rotating seat 42 through the rotating part, under the cooperation of the limiting wheel 43 in the two protection assemblies 4, the limiting of the pulley groove 21 for installing the hoisting steel wire rope is realized, the hoisting steel wire rope is prevented from falling off from the pulley groove 21 due to the outward tension of the steel wire rope caused by the contact between the hook 6 and the ground or the hoisted object when the steel wire rope continues to descend, the normal hoisting work of the crane is affected;

[0027] When the positioning part 51 of the positioning assembly 5 is completely clamped into the corresponding clamping groove 31, the positioning of the protection assembly 4 on the fixing seat 3 is completed, after the positioning of the protection assembly 4 is completed, under the cooperation of the two guide parts 52 and the two return springs 54 in the positioning part 51, the two positioning pins 53 are inserted into the corresponding insertion grooves 311, the installation and fixing of the protection assembly 4 on the fixing seat 3 is completed, when it is needed to disassemble the protection assembly 4, the positioning pin 53 of the positioning assembly 5 is taken out from the corresponding insertion groove 311, the protection assembly 4 is taken off from the fixing seat 3 through the positioning insert 44, which is convenient and fast.

[0028] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application belong to the scope of the claims of the present application and its equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A crane pulley block anti-derailment safety protection device, comprising a mounting sleeve (1), characterized in that: The mounting sleeve (1) is equipped with a pulley body (2), and the surface of the pulley body (2) is provided with a pulley groove (21). The mounting sleeve (1) is equipped with two fixed seats (3) on both sides of the pulley body (2). The top surfaces of the two fixed seats (3) are detachably equipped with protective components (4). The protective components (4) include a mounting seat (41). The bottom surfaces of the mounting seat (41) are equipped with positioning plugs (44) on both sides. The positioning plugs (44) are slidably inserted into the mounting seat (41). The top surface of the mounting seat (41) is equipped with a rotating seat (42). The rotating seat (42) is rotatably equipped with a limiting wheel (43). The limiting wheel (43) cooperates with the pulley groove (21). The top surface of the mounting seat (41) is equipped with a positioning component (5) on one side.

2. The crane pulley block anti-derailment safety protection device as described in claim 1, characterized in that, The positioning component (5) includes a positioning element (51). A slot (31) is provided in the middle of one side of the top surface of the fixed base (3). The positioning element (51) is slidably locked in the slot (31). Two guide elements (52) are symmetrically installed in the positioning element (51) and slide relative to each other in the positioning element (51). A positioning pin (53) is fixedly installed on one side of each of the two guide elements (52). There are two positioning pins (53). A return spring (54) is symmetrically installed between the two guide elements (52). The two positioning pins (53) are inserted relative to each other in the slot (31) through the guide elements (52) and the return spring (54). The positioning component (5) cooperates with the protective component (4).

3. The crane pulley block anti-derailment safety protection device as described in claim 2, characterized in that, A push-pull member (55) is fixedly installed on one side of the surface of the guide member (52) by a connector. The push-pull member (55) slides on one side of the positioning member (51). The push-pull member (55) and the guide member (52) cooperate with each other.

4. A crane pulley block anti-derailment safety protection device as described in claim 2, characterized in that, The card slot (31) has slots (311) on both sides, and the positioning pin (53) is slidably inserted into the slot (311).

5. A crane pulley block anti-derailment safety protection device as described in claim 1, characterized in that, The top surface of the fixed base (3) is symmetrically provided with a positioning groove (32), and the positioning plug (44) is slidably inserted into the positioning groove (32).

6. The crane pulley block anti-derailment safety protection device as described in claim 1, characterized in that, A hook (6) is fixedly installed in the middle of the bottom surface of the mounting sleeve (1), and the hook (6) cooperates with the mounting sleeve (1).

7. A crane pulley block anti-derailment safety protection device as described in claim 1, characterized in that, A rotating shaft (22) is fixedly installed in the middle of the pulley body (2). Bearings (23) are sleeved at both ends of the rotating shaft (22). There are two bearings (23), and the two bearings (23) are fixedly installed on both sides of the mounting sleeve (1).

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