Gantry lifting hook pulley block assembling device

Abstract

The utility model provides a gantry crane hook pulley block assembling device which comprises a mandrel and at least one pulley block, each pulley block comprises a pulley shaft sleeve and a plurality of pulleys, all the pulleys of one pulley block are installed on the pulley shaft sleeve, and the pulley shaft sleeve is installed on the mandrel. The assembling device can be disassembled, assembled and maintained offline, and the precision and reliability of the installation size can be ensured. The assembly device can be integrally replaced, extra damage and repeated faults during assembly and disassembly are avoided, the maintenance working time is greatly shortened, and the installation precision is greatly improved. The number of the required shaft sleeve type pulley blocks can be adjusted according to the number of pulleys required by the gantry sling.

Description

Technical Field

[0001] The utility model relates to the technical field of crane hoisting, in particular to an assembly device for a gantry crane hook pulley block. Background Art

[0002] The main function of a crane is to lift and transport, which places extremely high demands on work safety. The lifting safety of a casting crane is of utmost importance. Almost every casting crane lifting accident will result in serious equipment losses and casualties. The cranes used by steel companies to lift molten metal are fixed gantry hooks. The maintenance quality of the gantry hooks determines the safety and service life of the lifting, and the pulley block is the lifting transmission mechanism of the gantry hook, which is of utmost importance.

[0003] Usually, the gantry hook manufacturer handles the pulley block in the following way: first install the load-bearing plate, pulley piece, and washer in order through the mandrel, and then weld the load-bearing plate to the main box beam of the gantry hook. Since the load-bearing plate and the main box beam of the gantry hook cannot be disassembled after welding, the pulley block has the following problems during use:

[0004] 1. After the pulley is installed with the bearing, there will be a gap for installing the dust cover on both sides of the pulley. A spacer ring will be installed between the pulleys to prevent the two pulleys from squeezing and rubbing. If the bearing of a pulley fails, lifting a single pulley will cause the spacer ring between the two pulleys to hang on the edge of the pulley, making it impossible to lift the pulley alone. Forced disassembly may cause other pulleys to be squeezed and deformed, and the bearings to be damaged.

[0005] 2. It is difficult to install the pulley block. When reinserting the mandrel, it is necessary to pass the spacer ring and the pulley bearing one by one. If the spacer ring slides down, it may block the movement of the mandrel. In addition, due to the assembly allowance of the pulley dust ring and the bearing, it is basically impossible to restore the pulley spacing size before disassembly.

[0006] 3. The disassembly and installation process is difficult, resulting in a long overall time consumption.

[0007] Therefore, a gantry crane hook pulley assembly device is needed. Utility Model Content

[0008] The utility model aims to provide a gantry crane hook pulley assembly device, which can be replaced as a whole, avoiding additional damage and repeated failures during disassembly and assembly, and greatly shortening maintenance work time and installation accuracy.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A gantry crane hook pulley block assembly device comprises a core shaft and at least one pulley block, wherein the pulley block comprises a pulley sleeve and a plurality of pulleys, all the pulleys of one pulley block are mounted on the pulley sleeve, and the pulley sleeve is mounted on the core shaft.

[0011] Furthermore, in the above-mentioned gantry crane hook pulley block assembly device, it also includes a load-bearing hanger plate, which is installed on the core shaft and located between adjacent pulley blocks, and the load-bearing hanger plate is detachably connected to the core shaft.

[0012] Furthermore, in the above-mentioned gantry crane hook pulley block assembly device, all the pulleys and the pulley sleeves between adjacent load-bearing hanger plates form a pulley block.

[0013] Furthermore, in the above-mentioned gantry crane hook pulley block assembly device, the pulley block also includes a spacer ring, the spacer ring is located between the pulleys, and the spacer ring is installed on the pulley sleeve.

[0014] Furthermore, in the above-mentioned gantry crane hook pulley block assembly device, both ends of the pulley block are fixed with round nuts.

[0015] Furthermore, in the above-mentioned gantry crane hook pulley block assembly device, the pulley block is provided with one or more groups.

[0016] Furthermore, in the above-mentioned gantry crane hook pulley block assembly device, an even number of pulleys are arranged in one pulley block.

[0017] Furthermore, in the above-mentioned gantry crane hook pulley block assembly device, the pulley sleeve is made of wear-resistant steel.

[0018] It can be seen from the analysis that the utility model discloses a gantry crane hook pulley assembly device, which can be disassembled and repaired offline to ensure the installation size accuracy and reliability. The assembly device can be replaced as a whole to avoid additional damage and repeated failures during disassembly and assembly, greatly shortening the maintenance work time and installation accuracy. The number of sleeve pulley groups required can be adjusted according to the number of pulleys required by the gantry crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0021] Figure 2The figure is a schematic structural diagram of a pulley block according to an embodiment of the utility model.

[0022] Figure 3 This is a structural schematic diagram of a pulley block according to an embodiment of the utility model having two groups.

[0023] Explanation of reference numerals: 1. spindle; 2. pulley; 3. pulley sleeve; 4. round nut; 5. load-bearing hanging plate. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0025] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] One or more examples of the utility model are shown in the attached drawings. The detailed description uses numbers and letters to refer to the features in the drawings. Similar or similar marks in the drawings and descriptions have been used to refer to similar or similar parts of the utility model. As used herein, the terms "first", "second", and "third" etc. are used interchangeably to distinguish one component from another, and are not intended to indicate the position or importance of individual components.

[0027] like Figures 1 to 3 As shown, according to an embodiment of the utility model, a gantry crane hook pulley assembly device is provided, comprising a core shaft 1 and at least one pulley block, wherein, as Figure 1 and 2As shown, the pulley block includes a pulley sleeve 3 and a plurality of pulleys 2, all pulleys 2 of a pulley block are mounted on the pulley sleeve 3, and the pulley sleeve 3 is mounted on the mandrel 1. The assembly device can design the diameter and length of the pulley sleeve 3 suitable for the gantry hook of different casting cranes, and one or more pulley blocks are used for assembly according to the lifting needs of the gantry hook. The assembly device can replace the pulley block as a whole, ensure the installation accuracy of each pulley 2, and greatly reduce the time required for replacing the pulley 2.

[0028] Furthermore, it also includes a load-bearing hanging plate 5, which is mounted on the mandrel 1 and located between adjacent pulley blocks, and the load-bearing hanging plate 5 is detachably connected to the mandrel 1. All pulley blocks and pulley sleeves 3 between adjacent load-bearing hanging plates 5 form a pulley block.

[0029] Furthermore, the pulley block also includes a spacer ring, which is located between the pulleys 2 and is mounted on the pulley sleeve 3 .

[0030] Furthermore, both ends of the pulley block are fixed with round nuts 4 to ensure that the pulley 2 does not move axially during use.

[0031] Furthermore, the pulley block is provided with one or more groups. When the pulley block of the gantry hoist is provided with multiple groups, the assembly device has the advantages of being more convenient for assembly and maintenance compared with the prior art, such as Figure 3 As shown, in one embodiment of the present invention, the gantry crane is equipped with two pulley blocks.

[0032] Furthermore, an even number of pulleys 2 are arranged in one pulley block, and the pulley sleeve 3 is made of wear-resistant steel. The even number of pulleys 2 and the required washers are sequentially installed on the entire pulley sleeve 3, and the pulley sleeve 3 is made of wear-resistant steel such as 40Cr, 42CrMo, etc., and when designing the pulley sleeve 3, it is necessary to ensure the deformation resistance of the core shaft 1 and the sleeve at the same time.

[0033] The steps for making and using the assembly device are as follows:

[0034] 1. Make a pulley sleeve 3 that matches the core shaft 1, install the pulley 2 and the spacer ring between the load-bearing hanging plate 5 on the pulley sleeve 3 and fix the two ends with round nuts 4 to make a pulley block. Figure 2 As shown;

[0035] 2. Place the pulley block between the load-bearing hanging plates 5 and install it through the pulley sleeve 3 and the core shaft 1. Figure 1 As shown;

[0036] 3. For a gantry hanger with multiple pulleys 2 and multiple load-bearing hanger plates 5, multiple sets of pulley sleeves 3 can also be manufactured for assembly and adaptation.

[0037] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0038] A gantry crane hook pulley assembly device, which can be disassembled and repaired offline, can ensure the installation size accuracy and reliability. The assembly device can replace the pulley block as a whole, avoid additional damage and repeated failures during disassembly and assembly, and greatly shorten the maintenance work time and installation accuracy. The number of sleeve pulley blocks required for assembly can be adjusted according to the number of pulleys 2 required by the gantry crane.

[0039] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gantry crane hook pulley assembly device, characterized in that: The invention comprises a core shaft and at least one pulley block, wherein the pulley block comprises a pulley sleeve and a plurality of pulleys, All the pulleys of one pulley block are mounted on the pulley sleeve, The pulley sleeve is mounted on the core shaft.

2. The gantry crane hook pulley assembly device according to claim 1, characterized in that: It also includes a load-bearing hanger plate, which is installed on the core shaft and located between adjacent pulley blocks, and the load-bearing hanger plate is detachably connected to the core shaft.

3. The gantry crane hook pulley assembly device according to claim 2, characterized in that: All the pulleys and the pulley sleeves between adjacent load-bearing hanging plates form a pulley block.

4. The gantry crane hook pulley assembly device according to claim 1, characterized in that: The pulley block further comprises a spacer ring, wherein the spacer ring is located between the pulleys. The spacer ring is mounted on the pulley sleeve.

5. The gantry crane hook pulley assembly device according to claim 1, characterized in that: The two ends of the pulley block are fixed by round nuts.

6. The gantry crane hook pulley assembly device according to claim 1, characterized in that: The pulley block is provided with one or more groups.

7. The gantry crane hook pulley assembly device according to claim 1, characterized in that: An even number of pulleys are arranged in one pulley block.

8. The gantry crane hook pulley assembly device according to claim 1, characterized in that: The pulley shaft sleeve is made of wear-resistant steel.

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