Rotating mechanism of showing stand

Abstract

The utility model relates to the technical field of showing instruments, and provides a rotating mechanism of a showing stand, which can enlarge the contact area between the bottom of a rotating shaft and a connecting groove through a connector, thereby improving the stability of connection between the rotating shaft and a bearing during vibration, reducing the stress concentration at the bottom of the rotating shaft and improving the stability of the rotating shaft. The structural stability of the rotating shaft and the bearing is protected, and the service life of the rotating shaft and the bearing is prolonged; the base is adjusted to the horizontal position through the leveling rod on the base, so that the contact position is stressed in a balanced manner, and the service life of the rotating mechanism is prolonged; 4-6 reinforcing ribs are evenly arranged in the middle of the rotating shaft in the circumferential direction, the bending resistance of the rotating shaft is enhanced, the weight is reduced through the hollow structure, meanwhile, the overall strength and rigidity of the rotating shaft are guaranteed through strengthening treatment of the shaft head and arrangement of the reinforcing ribs, and the service life of the rotating shaft is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to display instrument technical field, concretely is a kind of rotating mechanism of show stand. BACKGROUND

[0002] The show stand is widely applied in many fields such as commercial display, cultural exhibition, and the performance of its rotating mechanism is crucial.With the increasing diversification and high-end of display needs, higher requirements are put forward for the stability, accuracy and durability of the rotating mechanism of show stand.

[0003] Traditional rotating mechanism of show stand often exposes many problems due to insufficient mechanical structure design.For example, in the bearing aspect, ordinary bearing is difficult to bear complex and changeable load, and is prone to wear, looseness and other conditions, resulting in rotation jam and precision decline;The fixing mode of connecting parts is simple, and bolt looseness frequently occurs in long-term vibration environment, affecting the overall structural stability;The strength and stability of the base are not enough, and cannot effectively absorb vibration and impact force, and are prone to deformation, which seriously restricts the performance improvement and reliable operation of the rotating mechanism of show stand, and is not conducive to the long-term use of rotating mechanism, therefore a kind of rotating mechanism of show stand is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] TECHNICAL PROBLEM SOLVED

[0005] In view of the deficiencies of prior art, the utility model provides a kind of rotating mechanism of show stand to solve the problem that the above rotating mechanism is difficult to use for a long time.

[0006] TECHNICAL SCHEME

[0007] To achieve the above solving purpose, the utility model provides the following technical scheme: a kind of rotating mechanism of show stand, including base and rotating shaft, the base is equipped with bearing, the outer ring of bearing is fixedly installed with support, support is fixedly installed at the center position in the inside of base, the inner ring of bearing is provided with connecting slot, rotating shaft is hollow structure, the bottom of rotating shaft is fixedly installed with six connectors that are centrally symmetrically distributed, the side of connector is arc surface, and the two sides of arc are arc angle, and connecting slot is the groove compatible with the bottom of rotating shaft and connector.

[0008] Further, the middle part of the base is provided with four thread holes that are centrally symmetrically distributed at the transition of inclined surface, and a leveling rod is movably connected in the thread hole through thread.

[0009] Further, the top of the leveling rod is fixedly installed with knob, and the bottom of the leveling rod is fixedly installed with rubber bottom pad, and the rubber bottom pad is circular truncated cone.

[0010] Further, the base is casted by cast steel material, 6-8 radial reinforcing ribs are uniformly arranged in the circumferential direction of the base, the thickness of the reinforcing rib is 10mm, the height is 30mm, and the reinforcing rib extends from the edge of the base to the mounting position of the support.

[0011] Further, the bearing is a 7206AC angular contact ball bearing, and the contact angle is 25°.

[0012] Further, the rotating shaft is a hollow structure, and a hollow steel pipe with an outer diameter of 40mm and an inner diameter of 25mm is used as the main material.

[0013] Further, the shaft head and the bearing matching part of the rotating shaft are subjected to high-frequency quenching treatment, the quenching hardness reaches HRC55-60, and the quenching layer depth is 1-2mm.

[0014] Further, 4-6 reinforcing ribs are uniformly arranged in the circumferential direction at the middle position of the rotating shaft, the thickness of the reinforcing rib is 5mm, the height is 10mm, and the reinforcing rib is connected with the shaft body in a welding manner.

[0015] Further, a snap ring is fixedly installed on the rotating shaft, and the snap ring is a tapered ring with a wide upper part and a narrow lower part.

[0016] Beneficial effects

[0017] Compared with the prior art, the rotating mechanism of the display stand has the following advantages

[0018] Beneficial effects:

[0019] 1. The side surface of the connector is a circular arc surface, and the two side surfaces of the circular arc are circular arc angles. The contact area of the bottom of the rotating shaft and the connecting groove can be increased through the connector, so that the stability of the connection of the rotating shaft and the bearing when vibrating is improved, the stress concentration of the bottom of the rotating shaft is reduced, the structural stability of the rotating shaft and the bearing is beneficial to protect, and the service life of the rotating shaft and the bearing is prolonged.

[0020] 2. The base is adjusted to a horizontal position through the leveling rod on the base, and the connector and the bearing are also beneficial to be located in a horizontal position, so that the stress at the contact position is balanced, and the service life of the rotating mechanism is beneficial to prolong.

[0021] 3. The middle position of the rotating shaft is uniformly arranged with 4-6 reinforcing ribs in the circumferential direction, the bending resistance of the rotating shaft is enhanced, the hollow structure reduces the weight, the overall strength and rigidity of the rotating shaft are guaranteed through the strengthening treatment of the shaft head and the arrangement of the reinforcing ribs, the mechanical property requirement of the display stand when rotating is met, the wear resistance of the matching part of the rotating shaft and the bearing is effectively improved through high-frequency quenching treatment, and the service life of the rotating shaft is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 It is the main body structure schematic view of the utility model;

[0023] Fig. 2 It is the bearing and rotating shaft connecting structure schematic view of the utility model;

[0024] Fig. 3 It is the base structure schematic view of the utility model;

[0025] Fig. 4 It is the connector and connecting groove structure schematic view of the utility model.

[0026] The signs are as follows:

[0027] 10, base; 11, leveling rod; 12, rubber bottom pad; 13, bearing; 14, connecting groove; 15, support; 20, rotating shaft; 21, snap ring; 22, connector. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail in the form of examples combined with the drawings of the specification.

[0029] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation to be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0031] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] In the utility model, unless another definite provision and limitation, first feature is on second feature "on" or "under", first and second features can be direct contact, or first and second features are indirectly contacted through intermediate medium.In the description of the specification, the description of reference terms "one scheme", "several schemes", "example", "specific example" or "several examples" means that the specific feature structure material or characteristic described in conjunction with the scheme or example is contained in at least one scheme or example of the utility model.The illustrative description of the above terms in the specification is not necessarily for the same scheme or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more schemes or examples in a suitable way.

[0033] Please refer to Figs. 1-4 The utility model provides a rotating mechanism of show stand, when using, the article that needs to show is installed through snap ring 21 of fixed installation on rotating shaft 20, snap ring 21 is the taper ring of wide top narrow bottom, can install the article that needs to show on the snap ring 21 of different positions of rotating shaft 20, thereby the height of the article that needs to show is adjusted, the bottom of rotating shaft 20 is connected with the bearing 13 of fixed installation in base 10.

[0034] Base 10 adopts cast steel material and is cast, and 6-8 radial reinforcing ribs are evenly arranged in the circumferential direction of base 10, the thickness of the reinforcing rib is 10mm, and the height is 30mm, extending from the edge of base 10 to the mounting position of support 15, the cast steel material and the radial reinforcing rib can effectively improve the rigidity and damping performance of base 10, and adapt to various forces during rotation.

[0035] Four screw holes that are centrally symmetrically distributed are formed at the transition of the middle part of base 10, and leveling rods 11 are movably connected in the screw holes, knobs are fixedly installed at the top of leveling rods 11, rubber bottom pads 12 are fixedly installed at the bottom of leveling rods 11, the rubber bottom pads 12 are circular truncated cones, the base 10 can be conveniently adjusted to be horizontal by rotating the four leveling rods 11 on the base 10, and the rubber bottom pads 12 can calibrate the base 10 to be horizontal when the base 10 is slightly vibrated during use, and can provide a buffering effect for the bottom of the base 10.

[0036] The bearing 13 is arranged in the base 10, the bearing 13 is a 7206AC angular contact ball bearing 13, the contact angle of which is 25°, and the bearing 13 can better bear radial force and certain axial force, the high precision and good high-speed performance of the bearing 13 are suitable for a show stand rotating mechanism that has relatively high rotation accuracy and relatively light load, the outer ring of the bearing 13 is fixedly installed with a support 15, the support 15 is fixedly installed at the center position in the base 10, and the inner ring of the bearing 13 is provided with a connecting groove 14.

[0037] The rotating shaft 20 is a hollow structure, a hollow steel pipe with an outer diameter of 40 mm and an inner diameter of 25 mm is used as a main material, high-strength alloy steel shaft heads are welded at both ends of the steel pipe, the material of the shaft heads is selected to be 42CrMo, the shaft heads and the steel pipe are welded by using a bevel, and flaw detection is performed to ensure the welding quality, high-frequency quenching treatment is performed at the matching position of the shaft head and the bearing 13, the quenching hardness reaches HRC55-60, the quenching layer depth is 1-2 mm, and the surface wear resistance is improved, 4-6 reinforcing ribs are uniformly arranged at the middle position of the rotating shaft 20 in the circumferential direction, the reinforcing rib thickness is 5 mm, the height is 10 mm, the reinforcing rib is connected with the shaft body by welding, the bending resistance of the rotating shaft 20 is enhanced, the hollow structure reduces the weight, the overall strength and rigidity of the rotating shaft 20 are ensured through the strengthening treatment of the shaft head and the arrangement of the reinforcing rib, the mechanical property requirement of the rotating shaft during rotation is met, the high-frequency quenching treatment can effectively improve the wear resistance of the matching position of the rotating shaft 20 and the bearing 13, and the service life of the rotating shaft 20 is prolonged.

[0038] The bottom of the rotating shaft 20 is fixedly provided with six connectors 22 which are centrally and symmetrically distributed, the side surface of the connector 22 is a circular arc surface, and the two side surfaces of the circular arc are circular arc angles, the connecting groove 14 is a groove matched with the bottom of the rotating shaft 20 and the connector 22, the contact area of the bottom of the rotating shaft 20 and the connecting groove 14 can be increased through the connector 22, so that the stability of the connection of the rotating shaft 20 and the bearing 13 during vibration is improved, the stress concentration of the bottom of the rotating shaft 20 is reduced, the structural stability of the rotating shaft 20 and the bearing 13 is beneficial to be protected, and the service life of the rotating shaft 20 and the bearing 13 is prolonged.

[0039] The leveling rod 11 on the base 10 is used to adjust the base 10 to be horizontal, and the connector 22 and the bearing 13 are also beneficial to be located in a horizontal position, so that the force of the contact position is balanced, and the service life of the rotating mechanism is beneficial to be prolonged.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rotating mechanism of a display stand comprising a base (10) and a rotating shaft (20), characterized in that: The base (10) is internally provided with a bearing (13), the outer ring of the bearing (13) is fixedly installed with a support (15), the support (15) is fixedly installed at the center position inside the base (10), the inner ring of the bearing (13) is provided with a connecting groove (14), the rotating shaft (20) is a hollow structure, the bottom of the rotating shaft (20) is fixedly installed with six connectors (22) which are centrally symmetrically distributed, the side surface of the connector (22) is a circular arc surface, and the two side surfaces of the circular arc are circular arc angles, and the connecting groove (14) is a groove matched with the bottom of the rotating shaft (20) and the connector (22).

2. A rotating mechanism for a display stand according to claim 1, wherein: The middle inclined surface transition of the base (10) is provided with four thread holes which are centrally symmetrically distributed, and the leveling rod (11) is movably connected in the thread hole through threads.

3. A rotating mechanism for a display stand according to claim 2, wherein: The top of the leveling rod (11) is fixedly installed with a knob, the bottom of the leveling rod (11) is fixedly installed with a rubber bottom pad (12), and the rubber bottom pad (12) is a circular truncated cone.

4. A rotating mechanism for a display stand according to claim 1, wherein: The base (10) is casted by cast steel material, 6-8 radial reinforcing ribs are uniformly arranged in the circumferential direction of the base (10), the thickness of the reinforcing rib is 10mm, the height is 30mm, and the reinforcing rib extends from the edge of the base (10) to the mounting position of the support (15).

5. A rotating mechanism for a display stand according to claim 1, wherein: The bearing (13) is a 7206AC angular contact ball bearing (13), and the contact angle is 25°.

6. A rotating mechanism for a display stand according to claim 1, wherein: The rotating shaft (20) is a hollow structure, and a hollow steel pipe with an outer diameter of 40mm and an inner diameter of 25mm is used as a main material.

7. A rotating mechanism for a display stand according to claim 6, wherein: The shaft head of the rotating shaft (20) and the bearing (13) are subjected to high-frequency quenching treatment, the quenching hardness reaches HRC55-60, and the quenching layer depth is 1-2mm.

8. A rotating mechanism for a display stand according to claim 6, wherein: The middle position of the rotating shaft (20) is uniformly arranged with 4-6 reinforcing ribs in the circumferential direction, the thickness of the reinforcing rib is 5mm, the height is 10mm, and the reinforcing rib is connected with the shaft body by welding.

9. A rotating mechanism for a display stand according to claim 1, wherein: The rotating shaft (20) is fixedly installed with a snap ring (21), and the snap ring (21) is a tapered ring with a wide upper part and a narrow lower part.

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