Detachable lifting appliance for crane

Abstract

The utility model discloses a detachable lifting appliance for a crane, which relates to the technical field of lifting appliances and comprises a lifting appliance component consisting of a pulley block, a connecting side plate, a reinforcing bolt, a cross-shaped connecting rotary seat and a lifting hook, and the lifting hook is rotatably mounted with the cross-shaped connecting rotary seat through a mounting component; the mounting assembly comprises a quick mounting unit and a rotary resistance reduction unit; the quick mounting unit is used for realizing detachable mounting operation of the lifting hook; and the rotation resistance reduction unit is used for performing resistance reduction operation on the rotation of the lifting hook, so that the rotation of the lifting hook is smoother. The lifting hook can be conveniently disassembled and assembled through the installation assembly, meanwhile, through the structural arrangement of the ball and the annular rolling groove, when a lifted object needs to be subjected to direction adjustment, the lifting hook and the arc-shaped clamping base can integrally rotate along the track of the annular rolling groove through the ball, the rotation resistance of the lifting hook can be effectively reduced through rolling of the ball, and the lifting hook is convenient to disassemble and assemble. And the direction of the object can be adjusted more easily.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lifting appliance technical field, concretely is a detachable lifting appliance for crane. BACKGROUND

[0002] The hook is the most common lifting appliance in hoisting machinery, and is usually hung on the steel wire rope of the lifting mechanism with the help of a pulley block, and is divided into single hook and double hook according to shape, and is divided into forged hook and laminated hook according to manufacturing method.

[0003] At present, the crane hook on the market needs to replace many parts when replacing, wherein, including the nut screwed on the top of the hook and the bolt passing through the nut and the hook, in addition, some hooks are connected with the pulley block together, and the whole pulley block needs to be disassembled when replacing, so that the replacement of the hook can be completed, based on this, a detachable lifting appliance for crane is provided. SUMMARY

[0004] The utility model discloses a detachable lifting appliance for crane, which can solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a detachable lifting appliance for crane, which comprises a lifting appliance assembly composed of a pulley block, a connecting side plate, a reinforcing bolt, a cross-shaped connecting rotating seat and a hook, the connecting side plate is symmetrically installed on the outer wall of the pulley block, the cross-shaped connecting rotating seat is rotatably installed on the middle bottom of the two connecting side plates, the two connecting side plates are reinforced and fixed by the reinforcing bolt at the position close to the cross-shaped connecting rotating seat, and the hook is rotatably installed with the cross-shaped connecting rotating seat through a mounting assembly.

[0006] The mounting assembly comprises a quick mounting unit and a rotating drag reduction unit.

[0007] The quick mounting unit is used for realizing the detachable mounting operation of the hook.

[0008] The rotating drag reduction unit is used for reducing the drag of the rotation of the hook, so that the rotation of the hook is more smooth.

[0009] As a further scheme of the utility model, the quick mounting unit comprises an arc-shaped clamping seat, an arc-shaped clamping block, a connecting hole, a connecting bolt and a nut, and the hook is composed of a connecting shaft, a hook head and an annular clamping groove.

[0010] The hook head is fixed to the bottom end of the connecting shaft, the annular clamping groove is formed on the outer top of the connecting shaft, the connecting shaft penetrates from the bottom of the cross-shaped connecting rotating seat to the top of the cross-shaped connecting rotating seat, and the annular clamping groove is distributed above the cross-shaped connecting rotating seat.

[0011] The two arc-shaped clamping blocks are formed in the inner middle part of the arc-shaped clamping seat, the two arc-shaped clamping seats are sleeved on the outer top part of the connecting shaft and clamped in the inner side of the annular clamping groove through the arc-shaped clamping blocks, so as to realize the mounting and connection of the connecting shaft and the cross-shaped connecting rotating seat.

[0012] The connecting hole is symmetrically arranged in the arc-shaped clamping seat at the center position and completely penetrates from one side of the arc-shaped clamping seat to the other side, and when the two arc-shaped clamping seats are spliced, the connecting bolt penetrates the connecting holes on the two arc-shaped clamping seats, and the nut is screwed with the connecting bolt in a threaded connection, so as to realize the connection and fixation of the two arc-shaped clamping seats.

[0013] As a further scheme of the utility model, the rotating drag reduction unit comprises a C-shaped arc groove and a ball.

[0014] The C-shaped arc groove is arranged at the bottom of the arc-shaped clamping seat, and the ball is installed in the C-shaped arc groove and protrudes from the bottom of the arc-shaped clamping seat.

[0015] The upper surface of the cross-shaped connecting rotating seat is provided with an annular rolling groove, and the ball is rolling connected to the inner side of the annular rolling groove, and the ball is rolling along the annular rolling groove track, so as to realize the low-drag rotation of the hook and the arc-shaped clamping seat as a whole.

[0016] As a further scheme of the utility model, the C-shaped arc groove penetrates one side of the arc-shaped clamping seat, and the other side of the C-shaped arc groove is in a sealed structure, and the openings of the C-shaped arc grooves on the two arc-shaped clamping seats are in opposite states.

[0017] As a further scheme of the utility model, a plurality of balls are distributed in the C-shaped arc groove, and the balls are matched with each other, and the cross section arc track of the annular rolling groove is matched with the part of the ball protruding from the bottom of the arc-shaped clamping seat.

[0018] As a further scheme of the utility model, a limiting ring block is integrally formed at the position close to the bottom of the outer side of the connecting shaft, the limiting ring block is distributed below the cross-shaped connecting rotating seat, and the distance between the upper surface of the limiting ring block and the lower surface of the arc-shaped clamping seat is greater than the height of the cross-shaped connecting rotating seat.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] Through the installation assembly, the convenient disassembly and assembly of the hook can be realized, and through the structure of the ball and the annular rolling groove, when the direction of the hoisted object needs to be adjusted, the hook and the arc-shaped clamping seat as a whole can be rotated along the annular rolling groove track through the ball, and the rotation resistance of the hook can be effectively reduced through the rolling of the ball, so that the direction adjustment of the object is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a structural schematic view of the utility model;

[0022] Fig. 2 It is a connecting schematic view of the mounting assembly and the lifting hook of the utility model;

[0023] Fig. 3 It is a mounting schematic view of the lifting hook of the utility model;

[0024] Fig. 4 It is another perspective view of the lifting hook installation of the utility model;

[0025] Fig. 5 It is a split schematic view of the mounting assembly of the utility model.

[0026] In the drawing: 1, lifting assembly; 101, pulley block; 102, connecting side plate; 103, reinforcing bolt; 104, cross type connecting rotating seat; 105, lifting hook; 106, annular rolling groove; 2, mounting assembly; 201, arc-shaped clamping seat; 202, arc-shaped clamping block; 203, connecting hole; 204, C-shaped arc groove; 205, ball; 206, connecting bolt; 207, nut;

[0027] 1051, connecting shaft; 1052, hook head; 1053, annular clamping groove; 1054, limiting ring block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figs. 1-5 In the embodiments of the utility model, a detachable lifting appliance for a crane comprises a lifting appliance assembly 1 composed of a pulley block 101, a connecting side plate 102, a reinforcing bolt 103, a cross type connecting rotating seat 104 and a lifting hook 105. The connecting side plate 102 is symmetrically installed on the outer walls of the pulley block 101. The cross type connecting rotating seat 104 is rotatably installed at the middle bottom of the two connecting side plates 102. The two connecting side plates 102 are reinforced and fixed by the reinforcing bolt 103 at the positions close to the cross type connecting rotating seat 104. The lifting hook 105 is rotatably installed with the cross type connecting rotating seat 104 through a mounting assembly 2.

[0030] The mounting assembly 2 comprises a quick mounting unit and a rotating drag reduction unit.

[0031] The quick mounting unit is used for realizing the detachable mounting operation of the lifting hook 105.

[0032] The rotation resistance reduction unit is used for reducing the resistance of the rotation of the hook 105, so that the rotation of the hook 105 is smoother;

[0033] The quick mounting unit comprises two arc-shaped clamping seats 201, arc-shaped clamping blocks 202, connecting holes 203, connecting bolts 206 and nuts 207.

[0034] The hook head 1052 is fixed to the bottom end of the connecting shaft 1051, and the annular clamping groove 1053 is formed on the top of the outer side of the connecting shaft 1051.

[0035] The two arc-shaped clamping seats 201 are arranged on the top of the outer side of the connecting shaft 1051 and are clamped in the annular clamping groove 1053 through the arc-shaped clamping blocks 202, so as to realize the mounting and connection of the connecting shaft 1051 and the cross-shaped connecting rotating seat 104.

[0036] The connecting holes 203 are symmetrically arranged on one side of the arc-shaped clamping seat 201 and completely penetrate the other side of the arc-shaped clamping seat 201.

[0037] The rotation resistance reduction unit comprises C-shaped arc grooves 204 and balls 205.

[0038] The C-shaped arc grooves 204 are arranged on the bottom of the arc-shaped clamping seat 201, and the balls 205 are arranged in the C-shaped arc grooves 204 and protrude from the bottom of the arc-shaped clamping seat 201.

[0039] The upper surface of the cross-shaped connecting rotating seat 104 is provided with an annular rolling groove 106, and the balls 205 are arranged in the annular rolling groove 106.

[0040] The C-shaped arc grooves 204 are arranged in the C-shaped arc grooves 204, and the balls 205 are arranged in the C-shaped arc grooves 204.

[0041] In the embodiment, when the lifting assembly 1 is in use, the hook 105 is limitedly installed on the cross-shaped connecting rotating seat 104 through the mounting assembly 2, and when the object is lifted, the bottom of the ball 205 is distributed inside the annular rolling groove 106, so that when the direction of the lifted object needs to be adjusted, the hook 105 and the arc-shaped clamping seat 201 can be rotated along the track of the annular rolling groove 106 as a whole through the rolling of the ball 205, and the rolling of the ball 205 can effectively reduce the rotating resistance of the hook 105, so that the direction adjustment of the object is more convenient.

[0042] When the hook 105 needs to be replaced, the operation steps are as follows:

[0043] First, the hook 105 and the arc-shaped clamping seat 201 are rotated as a whole, so that the top cap of the connecting bolt 206 faces the opening area of the two connecting side plates 102, so that the connecting bolt 206 can be loosened by an external tool (for example, an internal hexagonal wrench), and it is necessary to be pointed out that the outer side of the arc-shaped clamping seat 201 is formed with a polygonal clamping groove for limiting the clamping of the nut 207, so that when the connecting bolt 206 is tightened or loosened, the nut 207 can remain in a non-rotating state), and finally the connecting bolt 206 and the nut 207 are separated, the two arc-shaped clamping seats 201 are separated and disassembled by disassembling the two connecting bolts 206, so that the limitation of the downward movement of the hook 105 is removed, and then the hook 105 can be removed.

[0044] Then, the connecting shaft 1051 of the new hook 105 is inserted from the bottom of the cross-shaped connecting rotating seat 104 to the top of the cross-shaped connecting rotating seat 104, and then the two arc-shaped clamping seats 201 are sleeved on the top outside of the connecting shaft 1051, so that the arc-shaped clamping block 202 is clamped in the inside of the annular clamping groove 1053, and finally the two arc-shaped clamping seats 201 are fixed by the cooperation of the connecting bolt 206 and the nut 207, that is, the installation of the new hook 105 is completed, and the whole operation is simple and convenient.

[0045] Please refer to Figs. 3-5 , the C-shaped arc groove 204 penetrates one side of the arc-shaped clamping seat 201, and the other side of the C-shaped arc groove 204 is in a sealed structure, and the openings of the C-shaped arc grooves 204 on the two arc-shaped clamping seats 201 are in opposite states.

[0046] In the embodiment, the opening structure of the C-shaped arc groove 204 can facilitate the installation and replacement of the ball 205, and after the two arc-shaped clamping seats 201 are spliced, the openings of the two C-shaped arc grooves 204 are blocked by the two arc-shaped clamping seats 201 respectively, so that the ball 205 rolls in the respective C-shaped arc grooves 204.

[0047] Please refer to Figs. 1-5The outer side of the connecting shaft 1051 is integrally formed with a limiting ring block 1054 near the bottom, the limiting ring block 1054 is distributed below the cross-shaped connecting rotating seat 104, and the distance between the upper surface of the limiting ring block 1054 and the lower surface of the arc-shaped clamping seat 201 is greater than the height of the cross-shaped connecting rotating seat 104.

[0048] In the embodiment: the limiting ring block 1054 is used for limiting the upward movement of the whole hook 105, the distance between the upper surface of the limiting ring block 1054 and the lower surface of the arc-shaped clamping seat 201 is greater than the height of the cross-shaped connecting rotating seat 104, so that the hook 105 has a certain upward and downward movement space after installation, so that the ball 205 does not interfere with the cross-shaped connecting rotating seat 104 when the arc-shaped clamping seat 201 is installed, and the ball 205 is located inside the annular rolling groove 106 when the hook 105 and the arc-shaped clamping seat 201 are lowered as a whole when hoisting an object, so as to facilitate the rotating operation of the hook 105.

[0049] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A detachable lifting tool for a crane, comprising a lifting tool assembly (1) composed of a pulley block (101), connecting side plates (102), reinforcing bolts (103), a cross-shaped connecting swivel (104), and a lifting hook (105), the connecting side plates (102) being symmetrically installed on both sides of the outer wall of the pulley block (101), the cross-shaped connecting swivel (104) being rotatably installed at the middle bottom of the two connecting side plates (102), and the two connecting side plates (102) being reinforced and fixed by the reinforcing bolts (103) at the positions close to the cross-shaped connecting swivel (104), characterized in that, The hook (105) is rotatably mounted with the cross-shaped connecting rotating seat (104) through a mounting assembly (2); The mounting assembly (2) comprises a quick-mounting unit and a rotating drag-reducing unit; The quick-mounting unit is used for realizing detachable mounting operation of the hook (105); The rotating drag-reducing unit is used for drag-reducing operation of the rotation of the hook (105), so that the rotation of the hook (105) is smoother.

2. A detachable spreader for a crane according to claim 1, characterized in that The quick-mounting unit comprises arc-shaped clamping seats (201), arc-shaped clamping blocks (202), connecting holes (203), connecting bolts (206) and nuts (207), and the hook (105) is composed of a connecting shaft (1051), a hook head (1052) and an annular clamping groove (1053). The hook head (1052) is fixed to the bottom end of the connecting shaft (1051), the annular clamping groove (1053) is formed on the top of the outer side of the connecting shaft (1051), the connecting shaft (1051) penetrates from the bottom to the top of the cross-shaped connecting rotating seat (104), and the annular clamping groove (1053) is distributed above the cross-shaped connecting rotating seat (104). The arc-shaped clamping seats (201) are provided in two, the arc-shaped clamping blocks (202) are formed on the inner side of the middle part of the arc-shaped clamping seats (201), the two arc-shaped clamping seats (201) are sleeved on the top of the outer side of the connecting shaft (1051) and clamped in the inner side of the annular clamping groove (1053) through the arc-shaped clamping blocks (202), so as to realize mounting and connection of the connecting shaft (1051) and the cross-shaped connecting rotating seat (104). The connecting holes (203) are symmetrically formed on one side of the arc-shaped clamping seat (201) and completely penetrate to the other side of the arc-shaped clamping seat (201), the connecting holes (203) on the two arc-shaped clamping seats (201) are penetrated by the connecting bolts (206) when the two arc-shaped clamping seats (201) are spliced, and the connecting bolts (206) are screwed and fastened with the nuts (207) in a threaded connection, so as to realize connection and fixation of the two arc-shaped clamping seats (201).

3. The detachable spreader for a crane according to claim 1, characterized in that, The rotating drag-reducing unit comprises C-shaped arc grooves (204) and balls (205). The C-shaped arc grooves (204) are formed on the bottom of the arc-shaped clamping seat (201), and the balls (205) are installed in the C-shaped arc grooves (204) and protrude from the bottom of the arc-shaped clamping seat (201). The upper surface of the cross-shaped connecting rotating seat (104) is provided with an annular rolling groove (106), the balls (205) are rolling connected to the inner side of the annular rolling groove (106), and the balls (205) roll along the track of the annular rolling groove (106), so as to realize small-drag rotation of the hook (105) and the arc-shaped clamping seat (201) as a whole.

4. A detachable spreader for a crane according to claim 3, characterized in that The C-shaped arc grooves (204) penetrate one side of the arc-shaped clamping seat (201), the other side of the C-shaped arc groove (204) is in a sealed structure, and the openings of the C-shaped arc grooves (204) on the two arc-shaped clamping seats (201) are in opposite states.

5. A detachable spreader for a crane according to claim 3, characterized in that A plurality of balls (205) are arranged in the single C-shaped arc groove (204), and the balls (205) are in contact with each other, and the cross section arc track of the annular rolling groove (106) matches the part of the balls (205) protruding from the bottom of the arc-shaped clamping seat (201).

6. A detachable spreader for a crane according to claim 2, characterized in that A limiting ring block (1054) is integrally formed on the outer side of the connecting shaft (1051) near the bottom, the limiting ring block (1054) is arranged below the cross-shaped connecting rotating seat (104), and the distance between the upper surface of the limiting ring block (1054) and the lower surface of the arc-shaped clamping seat (201) is greater than the height of the cross-shaped connecting rotating seat (104).

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