Lifting lug for connection of cable tower reinforcement cage of large-span cable-stayed bridge

Abstract

A lifting lug used for connection of a cable tower reinforcement cage of a large-span cable-stayed bridge comprises a base, an adjusting groove is formed in the base, an adjusting rod is rotationally arranged in the adjusting groove, a first adjusting block is arranged on a forward thread on the outer wall of one side of the adjusting rod, and a second adjusting block is arranged on a reverse thread on the outer wall of the other side of the adjusting rod. The first adjusting block and the second adjusting block are connected to the bottom of the adjusting groove through a sliding rail and sliding block assembly, a left lifting lug is arranged on the top of the first adjusting block, and a right lifting lug is arranged on the top of the second adjusting block. And therefore, the left lifting lug and the right lifting lug can be separated, a lifting rope can penetrate into the lifting lugs more conveniently, operation is convenient, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting lugs, in particular to a lifting lug used for connecting steel cages of cable towers of large-span cable-stayed bridges. Background Art

[0002] Lifting lugs are load-bearing components installed on equipment for lifting. Lifting lugs are important connecting components in equipment lifting and are directly related to the safety of large equipment lifting. For example, the Chinese utility model patent with application number 2017209040408, entitled A Lifting Lug, includes a lifting lug body and a circular hole provided on the lifting lug body, and also includes a lifting lug bottom plate provided at one end of the lifting lug body, and ribs are provided on both sides of the lifting lug body to enhance the stability between the lifting lug bottom plate and the lifting lug body. The lifting rope passes through the circular hole to realize the lifting of the heavy object by the lifting lug.

[0003] Most of the lifting lugs used for connecting the steel cage of the cable tower of a large-span cable-stayed bridge are fixed structures like the above-mentioned patents, and the lifting lugs cannot be unfolded, which makes it inconvenient to fix the lifting ropes.

[0004] Now, in order to facilitate the fixing of the suspension rope, a suspension lug for connecting the reinforcement cage of the cable tower of a long-span cable-stayed bridge is provided. Utility Model Content

[0005] The utility model aims to overcome the defects in the above-mentioned prior art and provides a lifting lug for connecting the steel cage of the cable tower of a large-span cable-stayed bridge. Turning the adjusting knob can drive the adjusting rod to rotate. When the adjusting rod rotates, the left lifting lug and the right lifting lug are respectively driven to move, so that the left lifting lug and the right lifting lug can be separated, making it more convenient to insert the lifting rope into the interior of the lifting lug. The overall device has a simple structure, is easy to operate and has higher practicality.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a lifting ear for connecting the steel cage of the cable tower of a large-span cable-stayed bridge, comprising a base, an adjustment groove is opened inside the base, an adjusting rod is rotatably arranged in the adjustment groove, a first adjusting block is arranged on the positive thread of the outer wall on one side of the adjusting rod, and a second adjusting block is arranged on the reverse thread of the outer wall on the other side of the adjusting rod. The first adjusting block and the second adjusting block are connected to the bottom of the adjustment groove through a slide rail slider assembly, a left lifting ear is arranged on the top of the first adjusting block, and a right lifting ear is arranged on the top of the second adjusting block, and the adjusting rod is rotated to separate or approach the left lifting ear and the right lifting ear.

[0007] As a preferred solution of the utility model, the middle part of the adjusting rod is a screw rod, and the two sides are smooth rods.

[0008] As a preferred solution of the utility model, the base includes a through hole, a bearing is arranged in the through hole, and a side polished rod is arranged in the through hole and supported by the bearing in the through hole.

[0009] As a preferred solution of the utility model, a fixing block is installed on one side of the adjustment slot, a bearing is arranged in the fixing block, and a polished rod on the other side is arranged in the fixing block and supported by the bearing in the fixing block.

[0010] As a preferred solution of the utility model, the first adjusting block and the second adjusting block are nut seats.

[0011] As a preferred solution of the utility model, the left hanging ear is symmetrically provided with a fixing buckle seat on both sides of the front and rear, and the right hanging ear is symmetrically provided with a fixing buckle that is buckled with the fixing buckle seat on both sides of the front and rear.

[0012] As a preferred solution of the utility model, two left-right symmetrical first mounting plates are respectively arranged on the front and rear sides of the base, and mounting holes are opened on the first mounting plates.

[0013] As a preferred solution of the utility model, it includes an adjusting button, and the adjusting button is fixed on the polished rod by a screw.

[0014] As a preferred solution of the utility model, the outer wall of the adjusting button is evenly provided with anti-slip patterns, and the adjusting button is located at one side of the through hole.

[0015] As a preferred solution of the utility model, a certain gap is left between the bottom of the left hanging ear, the right hanging ear and the top of the base.

[0016] The beneficial effects of the utility model are:

[0017] 1. The outer wall of the adjusting knob of the utility model is evenly provided with anti-skid patterns, which can increase the friction with the hand, so that the adjusting rod is more stable when the adjusting knob is used to rotate.

[0018] 2. The utility model can drive the adjusting rod to rotate by rotating the adjusting knob. When the adjusting rod rotates, the left hanging ear and the right hanging ear are respectively driven to move, so that the left hanging ear and the right hanging ear can be separated, making it more convenient to insert the hanging rope into the inside of the hanging ear. The overall device has a simple structure, is easy to operate and has higher practicality.

[0019] 3. The clamping-fitted fixing buckle and fixing buckle seat of the utility model ensure that the left lifting ear and the right lifting ear are completely closed, ensuring that the lifting rope is fixed in the lifting ear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the separation structure of the left lifting ear and the right lifting ear of the utility model;

[0022] Figure 3It is a schematic diagram of the internal structure of the utility model;

[0023] The reference numerals in the figure are: base 1, adjustment slot 2, adjustment rod 3, first adjustment block 4, second adjustment block 5, fixed block 6, through hole 7, left lifting ear 8, right lifting ear 9, fixing buckle seat 10, fixing buckle 11, adjustment button 12, first mounting plate 13, slide rail slider assembly 14, screw 31, and bare rod 32. DETAILED DESCRIPTION

[0024] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0025] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0026] like Figure 1-Figure 3 As shown, a lifting ear for connecting the steel cage of the cable tower of a long-span cable-stayed bridge comprises a base 1, an adjusting groove 2 is opened inside the base 1, an adjusting rod 3 is rotatably arranged in the adjusting groove 2, a first adjusting block 4 is arranged on the positive thread of the outer wall on one side of the adjusting rod 3, and a second adjusting block 5 is arranged on the reverse thread of the outer wall on the other side of the adjusting rod 3. The first adjusting block 4 and the second adjusting block 5 are connected to the bottom of the adjusting groove 2 through a slide rail slider assembly 14, a left lifting ear 8 is arranged on the top of the first adjusting block 4, and a right lifting ear 9 is arranged on the top of the second adjusting block 5, and the adjusting rod 3 is rotated to separate or approach the left lifting ear 8 and the right lifting ear 9.

[0027] Among them, the forward thread and reverse thread mentioned in the present invention are threads with opposite directions when screwed in.

[0028] The middle part of the adjusting rod 3 is a screw rod 31, and the two sides are smooth rods 32; the first adjusting block 4 and the second adjusting block 5 are nut seats.

[0029] Specifically, the adjusting rod 3 is rotated clockwise so that the first adjusting block 4 and the second adjusting block 5 on the adjusting rod 3 go opposite to each other along the forward thread and the reverse thread of the adjusting rod 3, and accordingly, the left lifting ear 8 and the right lifting ear 9 installed on the first adjusting block 4 and the second adjusting block 5 are separated, so that the lifting rope can be inserted into the interior of the lifting ear conveniently; on the other hand, the slide rail slider assembly 14 located below the first adjusting block 4 and the second adjusting block 5 plays a supporting and guiding role for the first adjusting block 4 and the second adjusting block 5, ensuring that the left lifting ear 8 and the right lifting ear 9 at the top of the first adjusting block 4 and the second adjusting block 5 are located in the same horizontal plane.

[0030] The base 1 comprises a through hole 7 , in which a bearing is arranged. A side polished rod 32 is arranged in the through hole 7 and supported by the bearing in the through hole 7 .

[0031] A fixing block 6 is installed on one side of the adjustment groove 2, and a bearing is arranged in the fixing block 6. A polished rod 32 on the other side is arranged in the fixing block 6 and supported by the bearing in the fixing block 6. An adjusting button 12 is also arranged on the polished rod 32 on the same side of the through hole 7. The adjusting button 12 is fixed to the polished rod 32 by screws, and the outer wall of the adjusting button 12 is evenly provided with anti-slip patterns.

[0032] Specifically, the light rod 32 located on one side of the through hole 7 is extended, and an anti-slip pattern adjusting button 12 is evenly arranged on the outer wall of the light rod 32. When the adjusting button 12 is turned, the adjusting rod 3 is also turned, thereby controlling the separation or approach of the left hanging ear 8 and the right hanging ear 9. The setting of the adjusting button 12 facilitates the rotation of the adjusting rod 3, and accordingly, it is more convenient to control the movement of the left hanging ear 8 and the right hanging ear 9.

[0033] The bearings located in the fixing block 6 and the through hole 7 receive the smooth rod 32 of the adjusting rod 3 , thereby ensuring the stability of the adjusting rod 3 during rotation.

[0034] The outer wall of the adjusting button 12 of the utility model is evenly provided with anti-skid patterns, which can increase the friction with the hand, so that the adjusting rod 3 is more stable when the adjusting button 12 is used to rotate.

[0035] The left lifting ear 8 is symmetrically provided with fixing buckle seats 10 on both sides of the front and rear, and the right lifting ear 9 is symmetrically provided with fixing buckles 11 that are buckled with the fixing buckle seats 10 on both sides of the front and rear.

[0036] Specifically, when the adjusting rod 3 rotates and the left hanging ear 8 and the right hanging ear 9 gradually approach each other, the fixing buckle 11 is buckled into the fixing buckle seat 10 so that the left hanging ear 8 and the right hanging ear 9 are completely closed. The cooperation between the fixing buckle 11 and the fixing buckle seat 10 ensures that the left hanging ear 8 and the right hanging ear 9 are completely closed.

[0037] The clamping-fitted fixing buckle 11 and fixing buckle seat 10 of the utility model ensure that the left lifting ear 8 and the right lifting ear 9 are completely closed, ensuring that the lifting rope is fixed in the lifting ear.

[0038] Two left-right symmetrical first mounting plates 13 are respectively arranged on the front and rear sides of the base 1 . The first mounting plates 13 are provided with mounting holes, through which bolts pass to facilitate the installation of the base 1 on the main structure.

[0039] A certain gap is left between the bottom of the left and right hanging ears 8 and 9 and the top of the base 1 to avoid friction between the left and right hanging ears 8 and 9 and the base 1, thereby affecting the separation or approach of the left and right hanging ears 8 and 9.

[0040] The utility model can drive the adjusting rod 3 to rotate by rotating the adjusting knob 12. When the adjusting rod 3 rotates, the left hanging ear 8 and the right hanging ear 9 are respectively driven to move, so that the left hanging ear 8 and the right hanging ear 9 can be separated, making it more convenient to insert the hanging rope into the inside of the hanging ear. The overall device has a simple structure, is easy to operate and has higher practicality.

[0041] More examples:

[0042] In order to prevent the left hanging ear 8 and the right hanging ear 9 from deforming and thus causing the two to not be completely closed, thereby causing the hanging rope to fall off, a fixing buckle seat is also provided at the position where the left hanging ear 8 and the right hanging ear 9 are closed, such as the top of the left hanging ear 8 and the right hanging ear 9, and the fixing buckle is used to strengthen the sealing of the hanging ear.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0044] Although this article uses more of the figure marks in the figures: base 1, adjustment slot 2, adjustment rod 3, first adjustment block 4, second adjustment block 5, fixed block 6, through hole 7, left lifting ear 8, right lifting ear 9, fixing buckle seat 10, fixing buckle 11, adjustment button 12, first mounting plate 13, slide rail slider assembly 14, screw 31, bare rod 32 and other terms, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A lifting lug for connecting a steel cage of a cable tower of a long-span cable-stayed bridge, characterized in that: The invention comprises a base (1), wherein an adjustment groove (2) is provided inside the base (1), an adjustment rod (3) is rotatably arranged in the adjustment groove (2), a first adjustment block (4) is arranged on the positive thread of the outer wall of one side of the adjustment rod (3), and a second adjustment block (5) is arranged on the reverse thread of the outer wall of the other side of the adjustment rod (3), the first adjustment block (4) and the second adjustment block (5) are connected to the bottom of the adjustment groove (2) through a slide rail and slider assembly (14), a left lifting ear (8) is arranged on the top of the first adjustment block (4), and a right lifting ear (9) is arranged on the top of the second adjustment block (5), and the left lifting ear (8) and the right lifting ear (9) are separated or brought closer by rotating the adjustment rod (3).

2. The lifting lug for connecting the steel cage of the tower of a long-span cable-stayed bridge according to claim 1, characterized in that: The middle part of the adjusting rod (3) is a screw rod (31), and both sides are smooth rods (32).

3. The lifting lug for connecting the steel cage of the tower of a long-span cable-stayed bridge according to claim 1, characterized in that: The base (1) comprises a through hole (7), a bearing is arranged in the through hole (7), and a side polished rod (32) is arranged in the through hole (7) and supported by the bearing in the through hole (7).

4. The lifting lug for connecting the steel cage of the tower of a long-span cable-stayed bridge according to claim 1, characterized in that: A fixed block (6) is installed on one side of the adjustment groove (2), a bearing is arranged in the fixed block (6), and a polished rod (32) is arranged in the fixed block (6) on the other side and supported by the bearing in the fixed block (6).

5. The lifting lug for connecting the steel cage of the tower of a long-span cable-stayed bridge according to claim 1, characterized in that: The first adjustment block (4) and the second adjustment block (5) are nut seats.

6. The lifting lug for connecting the steel cage of the tower of a long-span cable-stayed bridge according to claim 1, characterized in that: The left lifting ear (8) is symmetrically provided with a fixing buckle seat (10) on both sides of the front and rear, and the right lifting ear (9) is symmetrically provided with a fixing buckle (11) that is locked with the fixing buckle seat (10) on both sides of the front and rear.

7. The lifting lug for connecting the steel cage of the cable tower of a long-span cable-stayed bridge according to claim 1, characterized in that: Two left-right symmetrical first mounting plates (13) are respectively arranged on the front and rear sides of the base (1), and mounting holes are provided on the first mounting plates (13).

8. The lifting lug for connecting the steel cage of the tower of a long-span cable-stayed bridge according to claim 1, characterized in that: It comprises an adjusting button (12), wherein the adjusting button (12) is fixed on the polished rod (32) by means of a screw.

9. The lifting lug for connecting the steel cage of the cable tower of a long-span cable-stayed bridge according to claim 8, characterized in that: The outer wall of the adjusting button (12) is evenly provided with anti-slip grooves, and the adjusting button (12) is located on one side of the through hole (7).

10. The lifting lug for connecting the steel cage of the tower of a long-span cable-stayed bridge according to claim 1, characterized in that: A certain gap is left between the bottom of the left lifting ear (8), the bottom of the right lifting ear (9) and the top of the base (1).

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