Supporting device with variable inner diameter

Abstract

The utility model provides a supporting device with a variable inner diameter, which belongs to the technical field of prefabricated parts and comprises a mounting disc, a mounting ring frame, a first gear shaft, a gear ring, a second gear shaft and a supporting part. The installation disc and the installation ring frame are fixedly arranged on the peripheral face of the installation rod in the axial direction, a gap is reserved between the installation disc and the installation ring frame, the gear ring and the installation ring frame can rotate relatively, a driving gear meshed with the gear ring is arranged at one end of the first gear shaft, and the other end of the first gear shaft is rotationally installed on the installation disc and is in transmission connection with a first power piece. The multiple supporting pieces correspond to the second gear shafts, the multiple second gear shafts are distributed in a circumferential array mode and rotationally installed on the installation disc, planet gears and output gears are fixedly connected to the second gear shafts in the axial direction, the planet gears are meshed with the gear rings, the output gears are meshed with the rack sections of the supporting pieces, and the supporting pieces are slidably connected with the installation disc. The supporting device is used for solving the problem that a supporting device in a prefabricated part cannot support prefabricated parts with different inner diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated parts, in particular to a supporting device with a variable inner diameter. Background Art

[0002] After the prefabricated components are manufactured at the prefabrication site, they need to be transported to the construction site where they need to be installed. During transportation, some prefabricated components with hollow cavities and thin walls need to have effective support for the hollow parts to avoid cracks or damage to the prefabricated components due to bumps on the road during transportation. Traditional support devices often have a fixed inner diameter and cannot adapt to prefabricated components of different sizes and shapes. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a support device with a variable inner diameter, so as to solve the problem that the support device in the preform cannot support preforms with different inner diameters.

[0004] To achieve the above-mentioned and other related purposes, the utility model provides a support device with a variable inner diameter, comprising a mounting rod, a mounting plate, a mounting ring frame, a first gear shaft, a gear ring, a second gear shaft and a support member;

[0005] The mounting plate and the mounting ring frame are axially fixedly arranged on the outer circumferential surface of the mounting rod, a gap is left between the mounting plate and the mounting ring frame, the gear ring and the mounting ring frame can rotate relatively, one end of the first gear shaft is provided with a driving gear meshing with the gear ring, and the other end is rotatably mounted on the mounting plate and is transmission-connected with a first power member, a plurality of second gear shafts are provided, a plurality of support members are provided and correspond to the second gear shafts, a plurality of second gear shafts are distributed in a circular array and are all rotatably mounted on the mounting plate, a planetary gear and an output gear are axially fixedly connected to the second gear shaft, the planetary gear is meshed with the gear ring, the output gear is meshed with the rack segment of the support member, the support member is slidably connected to the mounting plate, and an end of the support member away from the central axis of the mounting rod is used to support the inner circumferential surface of the prefabricated part.

[0006] Optionally, a side slide groove is provided on the side of the gear ring, and a side protrusion is fixedly provided on the mounting ring frame, and the side protrusion slides in the side slide groove.

[0007] Optionally, the support member is provided with a T-shaped protrusion, and the mounting plate and the T-shaped protrusion are provided with a T-shaped sliding groove at a position corresponding to the T-shaped protrusion, and the T-shaped protrusion slides in the T-shaped sliding groove.

[0008] Optionally, the first power member is a servo motor.

[0009] Optionally, a roller is fixedly mounted on one end of the support member away from the central axis of the mounting rod, and the roller is used to abut against the inner surface of the prefabricated member.

[0010] Optionally, the outer ring of the roller is provided with a rubber layer.

[0011] Optionally, the roller is powered.

[0012] Optionally, the roller is driven by a hub motor.

[0013] Optionally, the mounting ring frame further includes support ribs and annular rings that are circumferentially spaced apart, a plurality of the support ribs are fixedly connected to the mounting rod, and the annular ring is fixedly connected to the plurality of the support ribs.

[0014] Optionally, a wireless control module is further included, and the wireless control module is communicatively connected with the first power member and / or the hub motor to control the operation of the first power member and / or the hub motor.

[0015] As described above, the utility model has the following beneficial effects:

[0016] In practical applications, when a prefabricated part with a hollow thin wall needs support, the present application can quickly adjust the radial size according to the required inner diameter hole size, thereby quickly completing the support, making the prefabricated part with a hollow thin wall safer and less prone to damage during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram showing one direction of the utility model.

[0018] Figure 2 It is a schematic structural diagram showing one direction of the utility model.

[0019] Component number description

[0020] Mounting rod 3, mounting plate 41, mounting ring frame 42, supporting ribs 422, annular ring 423, side protrusion 421, first gear shaft 43, driving gear 431, gear ring 44, side slide groove 441, second gear shaft 45, planetary gear 451, output gear 452, support member 46, roller 461. DETAILED DESCRIPTION

[0021] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] See also Figure 1 to Figure 2. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0023] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0024] See also Figure 1-2The utility model provides a support device with a variable inner diameter, including a mounting rod 3, a mounting plate 41, a mounting ring frame 42, a first gear shaft 43, a gear ring 44, a second gear shaft 45 and a support member 46; the mounting plate 41 and the mounting ring frame 42 are axially fixedly arranged on the outer peripheral surface of the mounting rod 3, and a gap is left between the mounting plate 41 and the mounting ring frame 42 for the gear ring 44 to rotate. The gear ring 44 and the mounting ring frame 42 can rotate relative to each other. One end of the first gear shaft 43 is provided with a driving gear 431 meshing with the gear ring 44, and the other end is rotatably mounted on the mounting plate 41 and is transmission-connected with a first power member. In this embodiment, the first power member can be constructed as a servo motor. There are multiple second gear shafts 45, and there are multiple support members 46 corresponding to the second gear shafts 45. Multiple second gear shafts 45 are distributed in a circular array and are all rotatably mounted on the mounting plate 41. The second gear shaft 45 is axially fixed with a planetary gear 451 and an output gear 452. The planetary gear 451 is meshed with the gear ring 44, and the output gear 452 is meshed with the rack segment of the support member 46. The support member 46 is slidably connected to the mounting plate 41, and the end of the support member 46 away from the central axis of the mounting rod 3 is used to support the inner circumferential surface of the preform 2. In this embodiment, a wireless control module is also included, which is connected to the first power member for communication and is used to control the operation of the first power member. In practical applications, when a preform with a cavity and thin walls has a support requirement, the present application can quickly adjust the radial size according to the inner diameter hole of the required size, so as to quickly complete the support, so that the preform with a cavity and thin walls is safer and less prone to damage during the transportation process. In this application, the shape of the cavity can be tubular or regular polygonal. The wireless control module adopts a common wireless control module in the prior art that can communicate with the servo motor and make it rotate forward and reverse, and the support member 46 is extended and retracted by controlling the forward and reverse rotation of the servo motor. When in use, the mounting rod 3 can be connected to the connecting rod, and the axial length can be extended to extend into a relatively long thin-walled cavity that needs to be supported.

[0025] In this embodiment, a side slide groove 441 is provided on the side of the gear ring 44, and a side protrusion 421 is fixedly provided on the mounting ring frame 42, and the side protrusion 421 slides in the side slide groove 441. By setting the side slide groove 441 and the matching side protrusion 421, the gear ring 44 can rotate more smoothly.

[0026] In this embodiment, the support member 46 is provided with a T-shaped protrusion, and the mounting plate 41 is provided with a T-shaped slot at a position corresponding to the T-shaped protrusion, and the T-shaped protrusion slides in the T-shaped slot. By setting the T-shaped protrusion and the T-shaped slot, the support member 46 is subjected to more uniform force when extending and retracting, and has a longer service life.

[0027] In this embodiment, a roller 461 is fixedly mounted on one end of the support member 46 away from the central axis of the mounting rod 3, and the roller 461 is used to abut against the inner surface of the preform. In this embodiment, the roller 461 can be designed to be cylindrical, and the roller 461 can be fixedly connected to the support member 46 in a non-rotating manner. A rubber layer is provided on the outer ring of the roller. After the support member 46 is extended, the roller contacts the inner cavity of the preform, and the roller can be squeezed to a certain extent, so that a good supporting force can be provided while protecting the inner cavity of the preform.

[0028] Another embodiment of roller 461, roller 461 can rotate, and roller 461 has power, roller 461 is driven by a hub motor, the mounting end of the hub motor is fixed to the support 46, the output shaft of the hub motor is fixedly connected to roller 461, the hub motor is communicatively connected to the same wireless control module mentioned above, and the wireless control module is used to control the operation of the hub motor. The wireless control module controls the forward and reverse rotation of the hub motor, thereby realizing the forward and reverse rotation of roller 461. The hub motor is not shown in the figure. By designing the hub motor, when the present application needs axial movement, the forward and reverse rotation of the hub motor can be controlled by the wireless control module to realize the axial movement of the present application in the cavity, thereby reducing the labor intensity of the operator.

[0029] In this embodiment, the mounting ring frame 42 further includes support ribs 422 and annular rings 423 that are spaced apart from each other on a circumference, wherein the plurality of support ribs 422 are fixedly connected to the mounting rod 3, and the annular ring 423 is fixedly connected to the plurality of support ribs 422. By designing the support ribs 422 and the annular ring 423, the stress-bearing performance of the overall structure is enhanced.

[0030] Working principle of this utility model:

[0031] The wireless control module controls the rotation of the servo motor, the servo motor drives the first gear shaft 43 to rotate, the rotation of the first gear shaft 43 drives the gear ring 44 to rotate, the rotation of the gear ring 44 drives the planetary gear 451, the output gear 452 rotates synchronously with the planetary gear 451, and the output gear 452 engages with the rack segment of the support member 46 to drive the extension and retraction of the support member 46.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A support device with a variable inner diameter, characterized in that: It comprises a mounting rod (3), a mounting plate (41), a mounting ring frame (42), a first gear shaft (43), a gear ring (44), a second gear shaft (45) and a support member (46); The mounting plate (41) and the mounting ring frame (42) are fixedly arranged on the outer peripheral surface of the mounting rod (3) in the axial direction, and a gap is left between the mounting plate (41) and the mounting ring frame (42). The gear ring (44) and the mounting ring frame (42) can rotate relative to each other. One end of the first gear shaft (43) is provided with a driving gear (431) meshing with the gear ring (44), and the other end is rotatably mounted on the mounting plate (41) and is transmission-connected with the first power member. A plurality of second gear shafts (45) are provided. A plurality of support members (46) are provided and are connected to the second gear shaft (46). Corresponding to the mounting plate (45), a plurality of the second gear shafts (45) are distributed in a circular array and are all rotatably mounted on the mounting plate (41); a planetary gear (451) and an output gear (452) are fixedly connected to the axial direction of the second gear shaft (45); the planetary gear (451) is meshed with the gear ring (44); the output gear (452) is meshed with the rack section of the support member (46); the support member (46) is slidably connected to the mounting plate (41); and an end of the support member (46) away from the central axis of the mounting rod (3) is used to support the inner circumference of the preform (2).

2. A support device with a variable inner diameter according to claim 1, characterized in that: A side sliding groove (441) is provided on the side of the gear ring (44), and a side protrusion (421) is fixedly provided on the mounting ring frame (42), and the side protrusion (421) slides in the side sliding groove (441).

3. A support device with a variable inner diameter according to claim 1, characterized in that: The support member (46) is provided with a T-shaped protrusion, and the mounting plate (41) is provided with a T-shaped sliding groove at a position corresponding to the T-shaped protrusion, and the T-shaped protrusion slides in the T-shaped sliding groove.

4. A support device with a variable inner diameter according to claim 1, characterized in that: The first power component is a servo motor.

5. A support device with a variable inner diameter according to claim 1, characterized in that: A roller is fixedly mounted on one end of the support member (46) away from the central axis of the mounting rod (3), and the roller is used to abut against the inner surface of the prefabricated member.

6. A support device with a variable inner diameter according to claim 5, characterized in that: The outer ring of the roller is provided with a rubber layer.

7. A support device with a variable inner diameter according to claim 5, characterized in that: The roller is powered.

8. A support device with a variable inner diameter according to claim 5, characterized in that: The roller is driven by a hub motor.

9. A support device with a variable inner diameter according to claim 1, characterized in that: The mounting ring frame (42) further comprises support ribs (422) and an annular ring (423) distributed at circumferential intervals, a plurality of the support ribs (422) being fixedly connected to the mounting rod (3), and the annular ring (423) being fixedly connected to the plurality of the support ribs (422).

10. A support device with a variable inner diameter according to claim 8, characterized in that: It also includes a wireless control module, which is communicatively connected with the first power member and / or the wheel hub motor and is used to control the operation of the first power member and / or the wheel hub motor.

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