Transfer device for truss assembly

Abstract

The utility model provides a truss assembly transfer device which comprises a cylindrical shell, a take-up wheel is arranged in the shell, a sling is wound on the take-up wheel, the take-up wheel is hollow, an inner gear ring is arranged on the inner wall of the take-up wheel, a sun gear is arranged in the take-up wheel, and the sun gear is connected with the sling. A planetary gear is arranged between the sun gear and the inner gear ring in a meshed mode, a rotating shaft penetrates through the middle of the planetary gear and is fixedly connected to the shell, a rotating shaft is fixedly connected to the middle of the sun gear, and one end of the rotating shaft extends out of the shell. The hoisting device is compact in structure, and hoisting of the truss assembly is ensured through the use of the planetary reduction gear set.

Description

Technical Field

[0001] This invention relates to the field of transfer device technology, and more particularly to a transfer device for a truss assembly. Background Technology

[0002] Truss: A structure consisting of members connected to each other at both ends by hinges. A truss is a planar or spatial structure composed of straight members, generally with triangular units. Truss members mainly bear axial tension or compression, thus making full use of the strength of the material. When the span is large, it can save material, reduce self-weight, and increase stiffness compared to solid beams.

[0003] In truss construction, columns are pre-installed, and then other truss components are hoisted onto the columns one by one or in a neat arrangement. Existing hoisting devices include truck cranes and tower cranes, and truss components are mostly hoisted from above and transferred to the installation position on the columns. However, in actual construction, there are situations where the working area of ​​the hoisting device is limited, and the hoisting sequence may prevent the continued use of the hoisting device. Therefore, a flexible hoisting and transfer device is needed. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses a transfer device for truss components, comprising a cylindrical outer shell, inside which a take-up reel is disposed, and a sling is wound around the take-up reel. In use, the device is pre-fixed to an already erected truss, and then the truss component is lifted and installed using the sling.

[0005] The take-up reel is hollow inside and has an internal gear ring on its inner wall. A sun gear is located inside the reel, and a planetary gear meshes between the sun gear and the internal gear ring. A rotating shaft runs through the center of the planetary gear and is fixedly connected to the outer casing. A rotating shaft is also fixedly connected to the center of the sun gear, with one end of the rotating shaft extending out of the outer casing. The rotation of the sun gear, driven by the planetary gears, drives the take-up reel. This transmission method amplifies torque, facilitating the lifting of the truss assembly. Furthermore, housing the transmission structure inside the take-up reel saves space, making the device more compact.

[0006] Preferably, a crank handle is fixedly connected to the end of the rotating shaft. The crank handle is used to rotate the sun gear.

[0007] Preferably, a cover plate is fixedly connected to the front of the outer casing, and the front of the cover plate is provided with a plurality of first helical protrusions. A baffle is axially slidably disposed on the rotating shaft, and a plurality of second helical protrusions are fixedly connected to the back of the baffle. When the baffle rotates with the rotating shaft, the inclined surfaces of the first and second helical protrusions engage. That is, the first and second helical protrusions serve the purpose of unidirectional rotation of the sun gear, allowing rotation when the sling is wound up, thus preventing the truss assembly from falling during lifting.

[0008] Preferably, a nut is threadedly connected to the middle of the rotating shaft, and a spring is provided inside the nut, with one end of the spring abutting against the baffle. The arrangement of the nut and spring ensures that the baffle is pressed against the cover plate, allowing the first and second helical protrusions to engage. At the same time, the spring ensures that the baffle has axial movement space on the rotating shaft.

[0009] Preferably, limit plates are provided on both sides of the take-up reel, and support protrusions are provided on the limit plates. The upper end of the support protrusions is arc-shaped, and the arc-shaped surface abuts against the take-up reel. The limit plates keep the take-up reel centered inside the housing, while the support protrusions are designed to minimize the contact area with the take-up reel.

[0010] Preferably, the lower side wall of the housing is provided with a cable outlet hole, and a lifting lug is fixedly connected to the upper end of the housing. The lifting cable passes through the cable outlet hole.

[0011] The beneficial effects of this invention are as follows:

[0012] 1. The device is cylindrical in shape and has a take-up reel inside. The take-up reel is equipped with a planetary reduction gear set, which not only increases the torque of the take-up reel, ensuring that the truss assembly can be lifted by manual rotation, but also makes the device compact and easy to carry.

[0013] 2. It is equipped with a first spiral protrusion, a second spiral protrusion, etc., which can realize the unidirectional rotation of the device, that is, it can maintain the height after the truss component is hoisted, which is conducive to subsequent construction and installation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a three-dimensional back view of the baffle of the present invention;

[0017] Figure 4 This is a three-dimensional schematic diagram of the limiting plate of the present invention.

[0018] List of reference numerals in the attached diagram:

[0019] 1. Handle; 2. Cover plate; 3. Housing; 4. Sling; 5. Nut; 6. Spring; 7. Baffle; 8. First helical protrusion; 9. Limiting plate; 10. Rotating shaft; 11. Sun gear; 12. Planetary gear; 13. Cable outlet; 14. Lifting lug; 15. Take-up reel; 16. Internal gear ring; 17. Second helical protrusion; 18. Support protrusion. Detailed Implementation

[0020] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] like Figures 1 to 4 As shown, a transfer device for a truss assembly includes a cylindrical outer shell 3, which is a thin shell with a thickened interior depending on the force applied. A take-up reel 15 is provided inside the outer shell 3, and a sling 4 is wound around the take-up reel 15. That is, during the rotation of the take-up reel 15, the sling 4 is wound onto it.

[0022] The take-up reel 15 is hollow inside, with an internal gear ring 16 on its inner wall. A sun gear 11 is housed inside the reel 15, and a planetary gear 12 meshes between the sun gear 11 and the internal gear ring 16. A rotating shaft runs through the center of the planetary gear 12 and is fixedly connected to the outer casing 3, meaning the position of the planetary gear 12 does not change during transmission. A rotating shaft 10 is fixedly connected to the center of the sun gear 11, with one end of the rotating shaft 10 extending out of the outer casing 3. The rotating shaft 10 rotates the sun gear 11, which, in turn, drives the take-up reel 15 to rotate, thus winding the sling 4 onto the reel 15, lifting the truss assembly. This transmission structure not only increases torque, allowing for manual lifting of the truss assembly, but also contributes to a more compact and efficient device.

[0023] A rocker handle 1 is fixedly connected to the end of the rotating shaft 10 by a key. First, the rocker handle 1 is fixed to the rotating shaft 10 by a threaded connection. Then, a flat key is used to connect the rotating shaft 10 and the rocker handle 1. That is, the key connection here is to achieve the connection between the rotating shaft 10 and the rocker handle 1 by a flat key, so that the two can rotate together.

[0024] A cover plate 2 is fixedly connected to the front of the outer casing 3. The cover plate 2 is a circular plate and is fixedly connected to the front of the outer casing 3 by several fixing bolts. Several first spiral protrusions 8 are provided on the front of the cover plate 2. There are three first spiral protrusions 8, including an inclined surface and a plane perpendicular to the cover plate 2. A baffle 7 is axially slidably arranged on the rotating shaft 10. Similarly, a flat key is provided between the baffle 7 and the rotating shaft 10 to ensure that the baffle 7 can rotate with the rotating shaft 10. During the sliding process, the baffle 7 can disengage from the flat key, that is, the baffle 7 will not continue to rotate with the rotating shaft 10. Several second spiral protrusions 17 are fixedly connected to the back of the baffle 7. The second spiral protrusions 17 have the same structure as the first spiral protrusions 8. When the baffle 7 rotates with the rotating shaft 10, the inclined surfaces of the first spiral protrusions 8 and the second spiral protrusions 17 cooperate. When rotating in the opposite direction, the planes of the first spiral protrusions 8 and the second spiral protrusions 17 contact each other, preventing the take-up reel 15 from rotating.

[0025] A nut 5 is threadedly connected to the middle of the rotating shaft 10. A spring 6 is provided inside the nut 5, and one end of the spring 6 abuts against the baffle 7. Under the clamping of the nut 5 and the spring 6, the baffle 7 can be pressed against the cover plate 2, ensuring that the first helical protrusion 8 and the second helical protrusion 17 can cooperate. In addition, when it is necessary to release the sling 4, the nut 5 is rotated to increase the axial movement range of the baffle 7. At the same time, the baffle 7 disengages from the flat key, and after rotating the baffle 7, the end of the flat key abuts against the baffle 7, so that the first helical protrusion 8 and the second helical protrusion 17 move away from each other.

[0026] Limiting plates 9 are provided on both sides of the take-up reel 15. The limiting plates 9 are circular plates with supporting protrusions 18 on them. The upper end of the supporting protrusions 18 is curved and abuts against the take-up reel 15. The limiting plates 9 limit the take-up reel 15 to ensure that it is centered inside the housing 3. At the same time, the curved surface reduces the contact area with the take-up reel 15.

[0027] The lower side wall of the outer casing 3 is provided with a cable outlet hole 13, which allows the sling 4 to enter and exit the outer casing 3. The upper end of the outer casing 3 is fixedly connected with a lifting lug 14, through which the device is fixedly connected to the already erected truss.

[0028] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A transfer device for a truss assembly, characterized in that: It includes a cylindrical outer shell (3), inside which a take-up reel (15) is provided, and a sling (4) is wound on the take-up reel (15); The take-up reel (15) is hollow inside and has an internal gear ring (16) on its inner wall. The take-up reel (15) has a sun gear (11) inside. A planetary gear (12) meshes between the sun gear (11) and the internal gear ring (16). A rotating shaft is provided through the middle of the planetary gear (12) and is fixedly connected to the outer shell (3). A rotating shaft (10) is fixedly connected to the middle of the sun gear (11) and one end of the rotating shaft (10) extends out of the outer shell (3).

2. The truss assembly transfer device according to claim 1, characterized in that: A crank handle (1) is fixedly connected to the end of the rotating shaft (10).

3. The truss assembly transfer device according to claim 1, characterized in that: The front of the outer shell (3) is fixedly connected to a cover plate (2), and the front of the cover plate (2) is provided with a plurality of first spiral protrusions (8). A baffle (7) is axially slidably provided on the rotating shaft (10), and a plurality of second spiral protrusions (17) are fixedly connected to the back of the baffle (7). When the baffle (7) rotates with the rotating shaft (10), the first spiral protrusions (8) and the second spiral protrusions (17) cooperate with each other on the inclined surfaces.

4. The truss assembly transfer device according to claim 3, characterized in that: The rotating shaft (10) is threaded with a nut (5) in the middle, and a spring (6) is provided on the inner side of the nut (5), with one end of the spring (6) abutting against the baffle (7).

5. The truss assembly transfer device according to claim 1, characterized in that: Both sides of the take-up reel (15) are provided with limit plates (9), and the limit plates (9) are provided with support protrusions (18). The upper end of the support protrusions (18) is an arc surface, and the arc surface abuts against the take-up reel (15).

6. The truss assembly transfer device according to claim 1, characterized in that: The lower side wall of the outer casing (3) is provided with a wire outlet hole (13), and the upper end of the outer casing (3) is fixedly connected with a lifting lug (14).

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