Quick screwing device for hanging bolt

Abstract

The utility model provides a quick screwing device for hanging bolts, which relates to a screwing tool and comprises four sleeves and a box body arranged above all the sleeves. The top end of each sleeve is fixedly provided with a driving column coaxial with the sleeve. The top end of each driving column penetrates through the box body and is arranged in the box body; each driving column is sequentially sleeved with an upper bearing, a driving chain wheel and a lower bearing which are fixedly connected with the driving column from top to bottom; the outer side of the whole formed by all the driving chain wheels is sleeved with a driving chain; the top end of at least one driving column is provided with an input shaft integrated with the driving column. The top end of the input shaft penetrates through the box cover and is movably connected with a driving device for driving the input shaft to rotate; the relative positions of the sleeves meet the condition that when screwing is carried out, each limiting bolt is sleeved with one sleeve; the limiting bolt screwing device can effectively reduce the workload of screwing the limiting bolt and greatly improve the screwing efficiency.

Description

Technical Field

[0001] The utility model relates to a screwing tool, in particular to a fast screwing device for hanging bolts. Background Art

[0002] During the hoisting process, some hoisting structures need to adjust their hanging positions according to factors such as the center of gravity of the hoisted object. Figure 1 During the position adjustment process of this type of lifting structure, it is necessary to loosen multiple limit bolts inside it before the position adjustment can be carried out, and after the adjustment is completed, all limit bolts need to be tightened.

[0003] However, due to factors such as equipment size and adjustment space limitations, the four limit bolts can only be tightened or loosened manually one by one, resulting in low tightening efficiency. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a device for quickly tightening hanging bolts to solve the technical problems in the prior art such as low tightening efficiency when manually tightening the limit bolts one by one.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A hanging bolt quick-tightening device is provided, comprising four sleeves and a box disposed above all the sleeves;

[0009] A driving column coaxial with the top end of each sleeve is fixedly mounted thereon;

[0010] The top end of each driving column passes through the box body and is disposed in the box body;

[0011] Each driving column is provided with an upper bearing, a driving sprocket and a lower bearing which are fixedly connected thereto in sequence from top to bottom;

[0012] The lower bearing is connected to the box body via a limiting member 1;

[0013] A drive chain is provided on the outer side of the whole formed by all the drive sprockets;

[0014] A box cover is installed on the top of the box body, and the upper bearing is connected to the box cover through a second limiting member;

[0015] An input shaft integrally mounted on the top end of at least one of the drive columns;

[0016] The top end of the input shaft passes through the box cover and is movably connected to a driving device for driving the input shaft to rotate;

[0017] The relative positions of the sleeves satisfy that when screwing, each limit bolt is sleeved with a sleeve.

[0018] Furthermore, four support pins are evenly installed at the bottom of the box, and the bottoms of all the support pins are coplanar;

[0019] The surface where the bottoms of all the support pins are located is below the surface where the bottoms of all the sleeves are located.

[0020] Further, the first stopper is a lower groove provided at the bottom of the inner cavity of the box body;

[0021] The inner diameter of the lower groove is the same as the outer diameter of the lower bearing, and part of the lower bearing is arranged in the lower groove.

[0022] Furthermore, the second limiting member is an upper groove provided at the bottom of the box cover;

[0023] The inner diameter of the upper groove is the same as the outer diameter of the upper bearing, and part of the upper bearing is arranged in the upper groove.

[0024] Further, the first stopper is a lower groove provided at the bottom of the inner cavity of the box body;

[0025] The inner diameter of the lower groove is the same as the outer diameter of the lower bearing;

[0026] The bottom end of the lower bearing is arranged in the lower groove;

[0027] The second limiting member is an upper groove arranged at the bottom of the box cover;

[0028] The inner diameter of the upper groove is the same as the outer diameter of the upper bearing;

[0029] The bottom end of the upper bearing is arranged in the upper groove.

[0030] Furthermore, the bottom of the lower groove is also provided with a concave portion coaxial therewith, and the inner diameter of the concave portion is not less than the inner diameter of the outer ring of the bearing and is less than the outer diameter of the outer ring of the lower bearing;

[0031] An upper concave portion is also provided at the top of the inner cavity of the upper groove, and the inner diameter of the upper concave portion is not less than the inner diameter of the middle outer ring of the upper bearing and is smaller than the outer diameter of the middle outer ring of the upper bearing.

[0032] Further, it also includes a tensioning structure;

[0033] The tensioning structure comprises two waist-shaped holes, two clamping blocks, a clamping column, a clamping bolt, a tensioning column and a tensioning sprocket;

[0034] The two waist-shaped holes are respectively opened on the bottom end of the box body and the box cover;

[0035] The midline of the waist-shaped hole in the extending direction is perpendicular to and intersects with the straight line obtained by connecting the two adjacent tensioning columns;

[0036] The tensioning column and the clamping column are provided between the two waist-shaped holes;

[0037] The two clamping blocks are respectively arranged on the top of the box cover and the bottom of the box body;

[0038] The two ends of the tensioning column respectively pass through the adjacent waist-shaped holes and are rotatably connected with the adjacent clamping blocks;

[0039] The tensioning column is sleeved with a tensioning sprocket which is arranged outside the driving chain and meshes with the driving chain;

[0040] The two ends of the bottom of the clamping column are respectively fitted with the box body and the box cover, and cannot pass through the waist-shaped hole;

[0041] The clamping bolt is arranged above the box cover, and the bottom end of the clamping bolt passes through the clamping block adjacent to it, the waist-shaped hole opened on the box cover, the clamping column, the waist-shaped hole opened on the box body, and then is threadedly connected with another clamping block.

[0042] Furthermore, the clamping column and the clamping bolt form two components, which are respectively arranged on both sides of the tensioning sprocket.

[0043] Furthermore, the driving device is a crank, and a sleeve is also installed at one end of the crank, and a driving block corresponding to the sleeve is provided at the top end of the input shaft.

[0044] Furthermore, the bottom end of the crank is hinged to the top end of the corresponding sleeve.

[0045] (III) Beneficial effects

[0046] The utility model provides a hanging bolt fast screwing device, which has the following beneficial effects compared with the prior art:

[0047] By setting up four sleeves, a box body, a drive sprocket, a drive chain, etc., when one sleeve is screwed, the other three sleeves can be driven to rotate synchronously, thereby greatly reducing the screwing workload, improving the screwing efficiency, and avoiding the disadvantages of manually screwing the limit bolts one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 This is a schematic diagram of the hoisting of the existing hanging structure;

[0050] Figure 2 A schematic diagram of the three-dimensional structure of a hanging bolt quick tightening device provided in an embodiment;

[0051] Figure 3 A schematic diagram of the internal structure of a hanging bolt quick tightening device provided in an embodiment;

[0052] Figure 4 A partial cross-sectional stereoscopic view of a hanging bolt quick tightening device provided in an embodiment.

[0053] In the figure: 1. sleeve; 2. housing; 3. driving column; 4. upper bearing; 5. driving sprocket; 6. lower bearing; 7. limiter 1; 8. limiter 2; 9. driving chain; 10. housing cover; 11. input shaft; 12. driving device; 13. supporting pin; 14. concave portion; 15. upper concave portion; 16. waist-shaped hole; 17. clamping block; 18. clamping column; 19. clamping bolt; 20. tensioning column; 21. tensioning sprocket; 22. driving block. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] Example

[0056] In order to solve the problems in the background technology, the present application provides a hanging bolt quick tightening device, which comprises a box body 2, a box cover 10, four sleeves 1 and the like.

[0057] Reference Figures 2 to 4 In the embodiment, there are four sleeves 1 arranged below the box body 2, and a driving column 3 coaxial therewith is respectively installed on the top of the four sleeves 1, and the top end of each driving column 3 passes through the bottom end of the box body 2 and is arranged in the box body 2.

[0058] In order to facilitate the simultaneous driving of four sleeves 1, each driving column 3 is also provided with an upper bearing 4, a driving sprocket 5 and a lower bearing 6 fixedly connected thereto in sequence from top to bottom. In order to reduce the manufacturing difficulty of the device, the upper bearing 4 and the lower bearing 6 are the same in this embodiment.

[0059] In some embodiments, the outer ring of the lower bearing 6 is welded to the bottom end of the box body 2, and the top end of the upper bearing 4 is welded to the box cover 10, so that the bottom and upper ends of the corresponding driving column 3 can be limited and fixed.

[0060] In this embodiment, in order to facilitate later maintenance and assembly and production of the equipment, the lower bearing 6 is connected to the bottom end of the box body 2 through a limiter 7, and the upper bearing 4 is connected to the box cover 10 through a limiter 8, which is used to limit the corresponding ends of the bottom of the driving column 3.

[0061] Secondly, a drive chain 9 meshing with the drive sprockets 5 is sleeved on the outer wall of the whole, and the drive chain 9 is arranged in the box body 2; that is, when one drive column 3 is rotated, since each drive sprocket 5 is fixedly connected to the corresponding drive column 3, the drive chain 9 can be used to drive all other drive sprockets 5 to rotate, and realize the corresponding sleeve 1 to rotate.

[0062] Thus, the purpose of rotating one sleeve 1 can be achieved to synchronously drive all other sleeves 1 to rotate and perform a screwing action.

[0063] In order to prevent the influence of debris on the chain drive, the box cover 10 is also installed on the top of the box body 2 so that the inner cavity of the box body 2 is closed, thereby preventing the debris from affecting the transmission process of the drive chain 9 and the drive sprocket 5.

[0064] In order to synchronously drive the four sleeves 1 , in this embodiment, an input shaft 11 is installed on the top end of at least one driving column 3 , and the top end of the input shaft 11 passes through the box cover 10 and is movably connected to the driving device 12 .

[0065] That is, the driving device 12 drives the corresponding driving column 3 via the input shaft 11, thereby driving all sleeves 1 to rotate synchronously (such as Figure 2 ).

[0066] In some embodiments, two or four driving columns 3 are further provided with input shafts 11 , that is, they are arranged according to needs.

[0067] In order to improve the convenience of the device, in some embodiments, the outer diameter of the input shaft 11 is the same as the outer diameter of the driving column 3, and the top of the input shaft 11 is provided with a driving block 22 with the same shape as the head of the limit bolt, and the driving device 12 is a crank, and one end of the crank is fixedly installed with a sleeve 1 coaxial with it (refer to Figure 2, the dimensions of the sleeve 1 and the drive block 22 corresponding to the crank in the figure do not correspond to the limiting bolt. The figure shows the structure of the drive device 12 under other embodiments).

[0068] When the equipment is working, the four sleeves 1 are respectively sleeved on the four limit bolts in the hanging structure. If the sleeve 1 cannot be sleeved on the corresponding limit bolt due to misalignment, first use the crank to manually fine-tune the limit bolt until the corresponding sleeve 1 can be sleeved on the corresponding limit bolt, and then sleeve 1 connected to the crank is sleeved on the top of the input shaft 11. Rotating the crank can synchronously drive all sleeves 1 to rotate through the input shaft 11, drive column 3, drive sprocket 5 and drive chain 9, thereby realizing the synchronous tightening of all limit bolts.

[0069] Among them, when screwing to the target or close to the target position, the entire device is removed, and then each limit bolt is screwed individually with the help of the driving device 12, so as to avoid defects caused by factors such as the different initial heights of the four limit bolts at the beginning, such as the inability to tighten to the same position or the inability to loosen to the target position synchronously, etc. At this time, the workload required for screwing individually with the help of the driving device 12 is greatly reduced, which can effectively improve the screwing efficiency.

[0070] In order to prevent the sleeve 1 from contacting the table surface where the limit bolts are installed in the hanging structure, thereby causing the disadvantage of excessive friction, in this embodiment, four support pins 13 are evenly installed at the bottom of the box body 1, and the bottoms of the four support pins 13 are coplanar. At the same time, the surface where the bottoms of the four support pins 13 are located is lower than the surface where the bottoms of the four sleeves 1 are located, thereby avoiding the aforementioned defects.

[0071] In combination with the drawings, in this embodiment, the limiting member 7 is specifically a lower groove arranged on the bottom of the inner cavity of the box body 2, and the inner diameter of the lower groove is the same as the outer diameter of the lower bearing 6, that is, the bottom end of the lower bearing 6 is arranged in the lower groove, which is used to limit the lower bearing 6.

[0072] Similarly, the second limiting member 8 is specifically an upper groove arranged at the bottom of the box cover 10, and the inner diameter of the upper groove is the same as the outer diameter of the upper bearing 4, that is, the top end of the upper bearing 4 is arranged in the upper groove, which is used to limit the upper bearing 4.

[0073] Through the above, it is convenient to improve the assembly efficiency of the equipment and at the same time facilitate disassembly and maintenance.

[0074] In order to reduce the friction between devices and improve the operating efficiency of the equipment, in this embodiment, the bottom of the lower groove is also provided with a coaxial lower concave portion 14, and the top of the inner cavity of the upper groove is provided with a coaxial upper concave portion 15, and the inner diameter of the lower concave portion 14 is not less than the inner diameter of the outer ring of the lower bearing 6 and is smaller than the outer diameter of the outer ring. Similarly, the inner diameter of the upper concave portion 15 is not less than the inner diameter of the outer ring of the upper bearing 4 and is smaller than the outer diameter of the outer ring.

[0075] Through the above arrangement, only the outer wall of the outer ring of the upper bearing 4 is in contact with the upper groove, and the other parts are suspended, while only the outer wall of the outer ring of the lower bearing 6 is in contact with the lower groove, and the other parts are suspended, thereby effectively reducing the friction between the equipment and improving the operating efficiency of the equipment. The upper concave part 15 and the lower concave part 14 can provide storage space for lubricating oil, etc., to facilitate lubrication.

[0076] In order to facilitate tightening the drive chain 9 to ensure stable operation of the equipment, a tightening structure is further provided in this embodiment.

[0077] The tensioning structure comprises two waist-shaped holes 16 , two clamping blocks 17 , a clamping column 18 , a clamping bolt 19 , a tensioning column 20 and a tensioning sprocket 21 .

[0078] The two waist-shaped holes 16 are respectively provided on the bottom end of the box body 2 and the box cover 10 , and the two are parallel to each other, and their projections overlap in a top view.

[0079] The tensioning column 20 is arranged between the two waist-shaped holes 16 and outside the space surrounded by the driving chain 9. The tensioning column 20 is sleeved with a tensioning sprocket 21 fixedly connected thereto, and the tensioning sprocket 21 is meshed with the driving chain 9. At the same time, the two ends of the tensioning column 20 are rotatably connected with a clamping block 17 respectively. The two clamping blocks 17 are respectively arranged at the bottom of the box body 2 and the top of the box cover 10, and the two clamping blocks 17 are respectively attached to the bottom of the box body 2 and the top of the box cover 10 and cannot pass through the adjacent waist-shaped holes 16. A clamping column 18 is also arranged between the two clamping blocks 17, and the clamping column 18 cannot pass through the two waist-shaped holes 16. The clamping bolt 19 is arranged above the clamping block 17 at the top of the box cover 10, and its bottom end passes through a clamping block 17, a waist-shaped hole 16, a clamping column 18, another waist-shaped hole 16 in sequence, and is threadedly connected with another clamping block 17.

[0080] At the same time, in order to tighten, the center line of the waist-shaped hole 16 in the extending direction is made perpendicular to and intersect with the straight line obtained by connecting the two driving columns 3 adjacent to the waist-shaped hole 16 .

[0081] That is, when the tensioning column 20 is moved in the extension direction of the waist-shaped hole (towards the center direction of the space enclosed by the drive chain 9), the drive chain 9 can be tensioned accordingly. When it moves to the target position, by tightening the clamping bolt 19, the clamping block 17 can cooperate with the clamping column 18 to clamp at least one of the box body 2 and the box cover 10, thereby fixing the position of the tensioning column 20 and achieving the tensioning purpose.

[0082] When adjustment is needed, just loosen the clamping bolt 19.

[0083] In this embodiment, a bearing A is installed at both ends of the bottom of the tension column 20, and the two bearings A are installed in a clamping block 17 respectively, so as to effectively reduce the resistance of the tension column 20 during rotation.

[0084] In order to further ensure the stability of the tensioning position, in this embodiment, the clamping column 18 and the clamping bolt 19 are formed into two components, and the two components are respectively arranged on both sides of the tensioning sprocket 21; as shown in the figure, the two clamping columns 18 and the clamping bolts 19 are arranged in the extension direction of the waist-shaped groove and do not contact each other.

[0085] That is, when the target position is reached, the target position can be fixed by tightening the two clamp bolts 19 .

[0086] In order to prevent the two clamping columns 18 from rotating due to their non-columnar structure during the movement of the tensioning column 20, which would affect the operation of the drive chain later, a positioning shaft (not shown in the figure) is installed on each clamping column 18, and the two ends of each positioning shaft pass through the adjacent waist-shaped holes 16 and are connected to the two clamping blocks 17, thereby preventing the aforementioned disadvantages.

[0087] In some embodiments, the outer wall diameter of the clamping column 18 is larger than the width of the waist-shaped hole, so that the clamping column cannot pass through the waist-shaped hole, while preventing its rotation from affecting the drive chain.

[0088] In some embodiments, in order to facilitate the individual tightening of the limit bolt, the crank is also hinged to the corresponding top end of the sleeve 1, so that the angle between the sleeve 1 and the crank can be adjusted as needed, thereby facilitating the individual tightening of the limit bolt, improving the tightening efficiency, and reducing the force required for tightening.

[0089] In summary, the hanging bolt quick tightening device provided by the present application has the following beneficial effects compared with the prior art:

[0090] 1. It can effectively improve the screwing efficiency and avoid the disadvantages of screwing the limit bolt alone;

[0091] 2. It can effectively reduce the workload and difficulty of individual screwing;

[0092] 3. Simple structure and easy operation.

[0093] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0094] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick tightening device for hanging bolts, characterized in that: It includes four sleeves and a box body arranged above all the sleeves; A driving column coaxial with the top end of each sleeve is fixedly mounted thereon; The top end of each driving column passes through the box body and is disposed in the box body; Each driving column is provided with an upper bearing, a driving sprocket and a lower bearing which are fixedly connected thereto in sequence from top to bottom; The lower bearing is connected to the box body via a limiting member 1; A drive chain is provided on the outer side of the whole formed by all the drive sprockets; A box cover is installed on the top of the box body, and the upper bearing is connected to the box cover through a second limiting member; An input shaft is mounted integrally with the top end of at least one of the drive columns; The top end of the input shaft passes through the box cover and is movably connected to a driving device for driving the input shaft to rotate; The relative positions of the sleeves satisfy that when screwing, each limit bolt is sleeved with a sleeve.

2. A hanging bolt fast tightening device according to claim 1, characterized in that: Four support pins are evenly installed at the bottom of the box, and the bottoms of all the support pins are coplanar; The surface where the bottoms of all the support pins are located is below the surface where the bottoms of all the sleeves are located.

3. A hanging bolt fast tightening device according to claim 1, characterized in that: The first stopper is a lower groove provided at the bottom of the inner cavity of the box; The inner diameter of the lower groove is the same as the outer diameter of the lower bearing, and part of the lower bearing is arranged in the lower groove.

4. A hanging bolt fast tightening device according to claim 1, characterized in that: The second limiting member is an upper groove arranged at the bottom of the box cover; The inner diameter of the upper groove is the same as the outer diameter of the upper bearing, and part of the upper bearing is arranged in the upper groove.

5. The fast screwing device for hanging bolts according to claim 1, characterized in that: The first stopper is a lower groove provided at the bottom of the inner cavity of the box; The inner diameter of the lower groove is the same as the outer diameter of the lower bearing; The bottom end of the lower bearing is arranged in the lower groove; The second limiting member is an upper groove arranged at the bottom of the box cover; The inner diameter of the upper groove is the same as the outer diameter of the upper bearing; The bottom end of the upper bearing is arranged in the upper groove.

6. A hanging bolt fast tightening device according to claim 5, characterized in that: The bottom of the lower groove is also provided with a concave portion coaxial therewith, and the inner diameter of the concave portion is not less than the inner diameter of the outer ring of the bearing and is less than the outer diameter of the outer ring of the lower bearing; An upper concave portion is also provided at the top of the inner cavity of the upper groove, and the inner diameter of the upper concave portion is not less than the inner diameter of the middle outer ring of the upper bearing and is smaller than the outer diameter of the middle outer ring of the upper bearing.

7. A hanging bolt fast tightening device according to claim 1, characterized in that: Also includes a tensioning structure; The tensioning structure comprises two waist-shaped holes, two clamping blocks, a clamping column, a clamping bolt, a tensioning column and a tensioning sprocket; The two waist-shaped holes are respectively opened on the bottom end of the box body and the box cover; The midline of the waist-shaped hole in the extending direction is perpendicular to and intersects with the straight line obtained by connecting the two adjacent tensioning columns; The tensioning column and the clamping column are provided between the two waist-shaped holes; The two clamping blocks are respectively arranged on the top of the box cover and the bottom of the box body; The two ends of the tensioning column respectively pass through the adjacent waist-shaped holes and are rotatably connected with the adjacent clamping blocks; The tensioning column is sleeved with a tensioning sprocket which is arranged outside the driving chain and meshes with the driving chain; The two ends of the bottom of the clamping column are respectively fitted with the box body and the box cover, and cannot pass through the waist-shaped hole; The clamping bolt is arranged above the box cover, and the bottom end of the clamping bolt passes through the clamping block adjacent to it, the waist-shaped hole opened on the box cover, the clamping column, the waist-shaped hole opened on the box body, and then is threadedly connected with another clamping block.

8. A hanging bolt fast tightening device according to claim 7, characterized in that: The clamping column and the clamping bolt constitute two components, which are respectively arranged on both sides of the tensioning sprocket.

9. A hanging bolt fast tightening device according to claim 1, characterized in that: The driving device is a crank, and a sleeve is also installed at one end of the crank, and a driving block corresponding to the sleeve is provided at the top end of the input shaft.

10. A hanging bolt fast tightening device according to claim 9, characterized in that: The bottom end of the crank is hinged to the top end of the corresponding sleeve.

Images