Portable tower crane detection device

Abstract

The utility model provides a portable tower crane detection device which comprises a box body, an opening is formed in the bottom of the box body, a semicircular dial plate is fixedly connected to the position, close to the center of the bottom, of the front side face of the box body, a pointer is arranged in the dial plate, scales are arranged in the dial plate, and a set of T-shaped sliding grooves are formed in the rear side face of the inner wall of the box body. T-shaped sliding blocks are connected into the T-shaped sliding grooves in a sliding mode, and fixing blocks are arranged on the faces, close to the interior of the box body, of the T-shaped sliding blocks. According to the utility model, a one-pulling and one-releasing detection mode is realized, so that the inclination between the standard knots of the tower crane is more convenient to measure, and the inclination number and the inclination direction can be directly observed at the same time.

Description

Technical Field

[0001] The utility model relates to a portable tower crane detection device, belonging to the technical field of tower crane detection. Background Art

[0002] A "tower crane" refers to a large lifting device used in construction sites or other engineering sites. It usually consists of a tower body, a rotating mechanism and a boom, and the tower body of the tower crane is formed by stacking and fixedly connecting multiple standard sections of the tower crane. The main function of the tower crane is to lift heavy objects from the ground or other positions and place them at the required positions. In order to ensure stability and safety during operation, it is necessary to measure the inclination between two adjacent standard sections of the tower body after the tower crane is installed.

[0003] However, in the prior art, the inclination of the tower body of the tower crane is generally measured by using a plumb bob. When using a plumb bob for measurement, only the direction of the inclination of the tower body can be observed, and the inclination degree of the tower body cannot be directly read out, resulting in inability to determine whether the inclination of the tower body is within the safety value. Therefore, the utility model proposes a portable tower crane detection device. Summary of the Utility Model

[0004] Based on the above background, the purpose of the utility model is to provide a portable tower crane detection device to solve the problems in the background art.

[0005] The utility model provides the following technical solutions:

[0006] A portable tower crane detection device, the device includes a box body, the bottom of the box body is open, a semicircular dial is fixedly connected to the front side of the box body near the center of the bottom, a pointer is arranged inside the dial, scales are arranged inside the dial, a group of T-shaped chutes are arranged on the rear side of the inner wall of the box body, T-shaped sliders are slidably connected in the T-shaped chutes, a fixed block is arranged on the side of the T-shaped slider close to the inside of the box body, a first through hole is opened at the top of the fixed block, a threaded column is passed through the first through hole, a nut is threadedly connected to the upper part of the threaded column located on the top surface of the fixed block, a square pull rod is arranged at the bottom of the threaded column, the bottom of the square pull rod is rotatably connected to a bottom plate, a square cross bar is arranged at the front side position inside the box body, the square cross bar is detachably fixedly connected to the pointer through a rotating shaft, a group of square through holes are symmetrically arranged at the top of the square cross bar, semi-circular convex blocks are arranged on the left and right side walls of the square through holes, the convex blocks are arranged opposite to each other, and the distance between the two is the same as the width of the square pull rod, the square pull rod is passed through the square through hole, a spring is sleeved outside the square pull rod, one end of the spring is welded to the top of the square cross bar, and the other end of the spring is welded to the bottom of the fixed block.

[0007] Preferably, a second through hole is provided on the dial, a third through hole is provided on the front side of the box body corresponding to the position of the second through hole, the rotating shaft is rotatably connected in the second through hole and the third through hole at the same time, the front section of the rotating shaft extends out of the inner wall of the dial, a limiting ring is provided on the part of the rotating shaft extending out of the inner wall of the dial, one end of the limiting ring close to the inner wall of the dial fits against the inner wall of the dial, a first hexagonal surface is provided on the outer cylindrical surface of the front section of the limiting ring on the rotating shaft, the rear end of the rotating shaft extends into the interior of the box body, and a second hexagonal surface is provided on the outer cylindrical surface of the part of the rotating shaft extending into the interior of the box body.

[0008] Preferably, the pointer comprises a pointer seat and a pointer body. A groove is formed on the front end face of the pointer seat, a first hexagonal groove is formed on the rear end face of the pointer seat, the first hexagonal groove matches the first hexagonal surface, the first hexagonal surface is located in the first hexagonal groove, the groove and the first hexagonal groove are communicated through a fourth through hole, and the pointer body is arranged on the outer cylindrical surface of the pointer seat and the two are integrally formed.

[0009] Preferably, a second hexagonal groove is formed in the center of the side of the square cross bar close to the front inner wall of the box body, a threaded hole is formed at the bottom of the second hexagonal groove, the second hexagonal groove cooperates with the second hexagonal surface, and the second hexagonal surface is located in the second hexagonal groove.

[0010] Preferably, a fifth through hole is formed inside the rotating shaft, a bolt is inserted into the groove, and the rod part of the bolt passes through the fifth through hole and is threadedly connected with the threaded hole to detachably connect the pointer and the square cross bar.

[0011] Preferably, an inverted L-shaped hanging plate is provided on the rear side of the box body near the top surface of the box body, and an anti-disengagement plate is provided at the position near the rear end of the top surface of the bottom plate.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] A portable tower crane detection device of the present utility model. By pulling the bottom plate downward, the square pull rod slides downward in the square through hole opened on the square cross bar. At the same time, the T-shaped slider slides downward in the chute, and the spring is compressed. Then, the inverted L-shaped hanging plate on the box body is hung on a cross bar near the bottom of the tower crane standard section. The top of the bottom plate is hung on a cross bar near the top of the bottom standard section of the tower crane standard section where the L-shaped hanging plate is hung by means of an anti-disengagement plate. When there is an inclination between two tower crane standard sections, the spring on the same side as the inclined side of the tower crane in the present utility model is subjected to a greater pulling force than the spring on the other side. The square cross bar rotates toward the inclined side of the tower crane under the different acting forces of the two springs, thereby driving the pointer body to rotate toward the inclined side of the tower crane in the dial, and the inclination of the tower crane standard section can be observed. At the same time, through the scale set in the dial, the inclination degree between the tower crane standard sections can be read out. The one-pull-one-release detection method is realized, making the measurement of the inclination degree between the tower crane standard sections more convenient, and at the same time, the inclination degree and the inclination direction can be directly observed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the present utility model Figure 1 semi-sectional structural schematic diagram;

[0017] Figure 3 is the structural schematic diagram of the box body of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the dial of the present utility model;

[0019] Figure 5 is the structural and positional relationship schematic diagram of the fixed block and the T-shaped slider of the present utility model;

[0020] Figure 6 is the structural schematic diagram of the square cross bar of the present utility model;

[0021] Figure 7 is the structural schematic diagram of the rotating shaft of the present utility model;

[0022] Figure 8 is the structural schematic diagram of the pointer of the present utility model.

[0023] In the figure: 1, box body; 2, dial; 3, pointer; 301, pointer seat; 302, pointer body; 4, scale; 5, T-shaped chute; 6, T-shaped slider; 7, fixed block; 8, first through hole; 9, threaded post; 10, nut; 11, square pull rod; 12, bottom plate; 13, square cross bar; 14, square through hole; 15, convex block; 16, spring; 17, second through hole; 18, third through hole; 19, limiting ring; 20, first hexagonal surface; 21, second hexagonal surface; 22, groove; 23, first hexagonal groove; 24, fourth through hole; 25, second hexagonal groove; 26, threaded hole; 27, fifth through hole; 28, bolt; 29, L-shaped hanging plate; 30, anti-disengagement plate; 31, rotating shaft. Detailed implementation mode

[0024] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the implementation of the present utility model is not limited to the following embodiments, and any formal modification and / or change made to the present utility model will fall within the protection scope of the present utility model.

[0025] In the present utility model, unless otherwise specified, all parts and percentages are in weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are conventional methods in the art unless otherwise specified. The components or equipment in the following embodiments are general standard components or components known to those skilled in the art unless otherwise specified, and their structures and principles can all be learned from technical manuals by those skilled in the art or obtained through conventional experimental methods.

[0026] The following makes a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings. In the following detailed description, for the convenience of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present utility model. However, one or more embodiments can also be implemented by those skilled in the art without these specific details.

[0027] Such as Figures 1-8As shown in the figure, a portable tower crane detection device includes a box body 1 with an open bottom. A semicircular dial 2 is fixedly connected to the front side of the box body 1 near the center of the bottom. A pointer 3 and a scale 4 are arranged inside the dial 2. A set of T-shaped sliding grooves 5 are arranged on the rear side of the inner wall of the box body 1. T-shaped sliders 6 are slidably connected in the T-shaped sliding grooves 5. A fixing block 7 is arranged on the side of the T-shaped slider 6 close to the inside of the box body 1. A first through hole 8 is opened at the top of the fixing block 7. A threaded column 9 is inserted through the first through hole 8. A nut 10 is threadedly connected to the upper part of the threaded column 9 located above the top surface of the fixing block 7. A square pull rod 11 is arranged at the bottom of the threaded column 9. The bottom of the square pull rod 11 is rotatably connected to a bottom plate 12. A square cross bar 13 is arranged at the front side position inside the box body 1. The square cross bar 13 is detachably and fixedly connected to the pointer 3 through a rotating shaft 31. A set of square through holes 14 are symmetrically arranged at the top of the square cross bar 13. Semi-circular convex blocks 15 are arranged on the left and right side walls of the square through holes 14. The convex blocks 15 are arranged opposite to each other, and the distance between them is the same as the width of the square pull rod 11. The square pull rod 11 is inserted through the square through hole 14. A spring 16 is sleeved outside the square pull rod 11. One end of the spring 16 is welded to the top of the square cross bar 13, and the other end of the spring 16 is welded to the bottom of the fixing block 7. An inverted L-shaped hanging plate 29 is arranged on the rear side of the box body 1 near the top of the box body 1. An anti-disengagement plate 30 is arranged at the position near the rear end of the top surface of the bottom plate 12.

[0028] In the above technical solution, by pulling the bottom plate 12 downward, the square pull rod 11 is driven to slide downward in the square through hole 14 opened on the square cross bar 13. At the same time, the T-shaped slider 6 slides downward in the sliding groove, and the spring 16 is compressed. Then, the inverted L-shaped hanging plate 29 on the box body 1 is hung on a cross bar near the bottom of the tower crane standard section, and the top of the bottom plate 12 is hung on a cross bar near the top of the bottom standard section of the tower crane standard section where the L-shaped hanging plate 29 is hung by using the anti-disengagement plate 30. When there is an inclination between the two tower crane standard sections, the spring 16 on the same side as the inclined side of the tower crane in the present utility model is subjected to a greater pulling force than the spring 16 on the other side. The square cross bar 13 rotates toward the inclined side of the tower crane under the different acting forces of the two springs 16, thereby driving the pointer body 302 to rotate toward the inclined side of the tower crane in the dial 2, and it can be observed which side the tower crane standard section inclines to. At the same time, through the scale 4 arranged in the dial 2, the inclination angle between the tower crane standard sections can be read out.

[0029] In the present utility model, in order to facilitate the detachable fixed connection between the pointer 3 and the cross bar, a second through hole 17 and a third through hole 18 are respectively opened on the dial 2 and the front side surface of the box body 1. The rotating shaft 31 is rotatably connected in the second through hole 17 and the third through hole 18 at the same time. The front section of the rotating shaft 31 extends out of the inner wall of the dial 2. In order to limit the position of the rotating shaft 31 in the second through hole 17 and the third through hole 18 and protect the pointer 3, a limiting ring 19 is provided on the part of the rotating shaft 31 extending out of the inner wall of the dial 2, and one end of the limiting ring 19 close to the inner wall of the dial 2 fits the inner wall of the dial 2.

[0030] In the present utility model, the pointer 3 includes a pointer seat 301 and a pointer body 302. In order to prevent the pointer 3 and the cross bar from rotating with the rotating shaft 31 respectively, a first hexagonal surface 20 is provided on the outer cylindrical surface of the front section of the limiting ring 19 on the rotating shaft 31. The rear end of the rotating shaft 31 extends into the interior of the box body 1. A second hexagonal surface 21 is provided on the outer cylindrical surface of the part of the rotating shaft 31 extending into the interior of the box body 1. A groove 22 is opened on the front end surface of the pointer seat 301, and a first hexagonal groove 23 is opened on the rear end surface of the pointer seat 301. The first hexagonal groove 23 matches the first hexagonal surface 20, and the first hexagonal surface 20 is located in the first hexagonal groove 23. The groove 22 and the first hexagonal groove 23 are communicated through a fourth through hole 24. The pointer body 302 is arranged on the outer cylindrical surface of the pointer seat 301 and the two are integrally formed. A second hexagonal groove 25 is opened in the center of the surface of the square cross bar 13 close to the front inner wall of the box body 1, and a threaded hole 26 is opened at the bottom of the second hexagonal groove 25. The second hexagonal groove 25 cooperates with the second hexagonal surface 21, and the second hexagonal surface 21 is located in the second hexagonal groove 25.

[0031] In the present utility model, in order to facilitate the disassembly and fixation between the rotating shaft 31 and the pointer 3 and the cross bar, a fifth through hole 27 is opened inside the rotating shaft 31. A bolt 28 is inserted through the groove 22, and the rod part of the bolt 28 passes through the fifth through hole 27 and is threadedly connected with the threaded hole 26, so as to detachably connect the pointer 3 and the square cross bar 13.

[0032] The working principle of a portable tower crane detection device of the present utility model is as follows:

[0033] Pull down the bottom plate 12 to drive the square pull rod 11 to slide downward in the square through hole 14 formed in the square cross bar 13. At the same time, the T-shaped slider 6 slides downward in the chute, and the spring 16 is compressed. Then, hang the inverted L-shaped hanging plate 29 on the box body 1 on a cross bar near the bottom of the tower crane standard section, and hang the top of the bottom plate 12 on a cross bar near the top of the bottom standard section of the tower crane standard section where the L-shaped hanging plate 29 is hung by using the anti-disengagement plate 30. When there is an inclination between two tower crane standard sections, the tension received by the spring 16 on the same side as the inclined side of the tower crane in the present invention is greater than the tension received by the spring 16 on the other side. The square cross bar 13 rotates toward the inclined side of the tower crane under the different acting forces of the two springs 16, thereby driving the pointer body 302 to rotate toward the inclined side of the tower crane in the dial 2, and it can be observed which side the tower crane standard section inclines to. At the same time, through the scale 4 provided in the dial 2, the inclination angle between the tower crane standard sections can be read out.

[0034] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A portable tower crane detection device, characterized in that: The device includes a box body (1), the bottom of the box body (1) is open, a semi-circular dial (2) is fixedly connected near the center of the bottom of the front side of the box body (1), a pointer (3) is arranged inside the dial (2), scales (4) are arranged inside the dial (2), a group of T-shaped sliding grooves (5) are arranged on the rear side of the inner wall of the box body (1), T-shaped sliders (6) are slidably connected in the T-shaped sliding grooves (5), a fixing block (7) is arranged on one side of the T-shaped slider (6) close to the inside of the box body (1), a first through hole (8) is opened at the top of the fixing block (7), a threaded column (9) is inserted through the first through hole (8), a nut (10) is threadedly connected to the upper part of the threaded column (9) located on the top surface of the fixing block (7), a square pull rod (11) is arranged at the bottom of the threaded column (9), the bottom of the square pull rod (11) is rotatably connected to a bottom plate (12), a square cross bar (13) is arranged at the front side position inside the box body (1), the square cross bar (13) is detachably and fixedly connected to the pointer (3) through a rotating shaft (31), a group of square through holes (14) are symmetrically arranged at the top of the square cross bar (13), semi-arc-shaped convex blocks (15) are arranged on the left and right side walls of the square through holes (14), the convex blocks (15) are arranged opposite to each other, and the distance between the two is the same as the width of the square pull rod (11), the square pull rod (11) is inserted through the square through hole (14), a spring (16) is sleeved outside the square pull rod (11), one end of the spring (16) is welded to the top of the square cross bar (13), and the other end of the spring (16) is welded to the bottom of the fixing block (7).

2. The portable tower crane detection device according to claim 1, characterized in that: A second through hole (17) is arranged on the dial (2), a third through hole (18) is arranged on the front side of the box body (1) corresponding to the position of the second through hole (17), the rotating shaft (31) is simultaneously rotatably connected in the second through hole (17) and the third through hole (18), the front section of the rotating shaft (31) extends out of the inner wall of the dial (2), a limiting ring (19) is arranged on the part of the rotating shaft (31) extending out of the inner wall of the dial (2), one end of the limiting ring (19) close to the inner wall of the dial (2) fits the inner wall of the dial (2), a first hexagonal surface (20) is arranged on the outer cylindrical surface of the front section of the limiting ring (19) on the rotating shaft (31), the rear end of the rotating shaft (31) extends into the inside of the box body (1), and a second hexagonal surface (21) is arranged on the outer cylindrical surface of the part of the rotating shaft (31) extending into the inside of the box body (1).

3. The portable tower crane detection device according to claim 2, characterized in that: The described pointer (3) includes a pointer base (301) and a pointer body (302). A groove (22) is provided on the front end face of the pointer base (301), and a first hexagonal groove (23) is provided on the rear end face of the pointer base (301). The first hexagonal groove (23) matches the first hexagonal face (20), and the first hexagonal face (20) is located within the first hexagonal groove (23). The groove (22) communicates with the first hexagonal groove (23) through a fourth through hole (24). The pointer body (302) is arranged on the outer cylindrical surface of the pointer base (301) and the two are integrally formed.

4. The portable tower crane detection device according to claim 3, characterized in that: On the central part of one side of the square cross bar (13) close to the inner wall of the front side of the box body (1), a second hexagonal groove (25) is provided. A threaded hole (26) is provided at the bottom of the second hexagonal groove (25). The second hexagonal groove (25) cooperates with the second hexagonal face (21), and the second hexagonal face (21) is located within the second hexagonal groove (25).

5. The portable tower crane detection device according to claim 4, wherein: A fifth through hole (27) is provided inside the rotating shaft (31). A bolt (28) is inserted through the groove (22). The rod part of the bolt (28) passes through the fifth through hole (27) and is threadedly connected to the threaded hole (26), thereby detachably connecting the pointer (3) to the square cross bar (13).

6. The portable tower crane detection device according to claim 5, characterized in that: On the rear side face of the box body (1), near the top surface of the box body (1), an inverted L-shaped hanging plate (29) is provided. On the top surface of the bottom plate (12), near the rear end position, an anti-disengagement plate (30) is provided.

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