CN211439625U

CN211439625U - Folding three-jaw centralizer

Info

Publication number: CN211439625U
Application number: CN201921340285.8U
Authority: CN
Inventors: 邓焱豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-09-08
Anticipated expiration: 2029-08-19

Abstract

The folding three-jaw centralizer comprises a frame and three same rod sets, wherein a funnel-shaped center hole is formed in the center of the frame, a handle is offset on the frame, the three rod sets form an angle of 120 degrees in pairs, and the rod sets are hinged to the edge of the frame. The beneficial effects of the utility model are that the utility model discloses a foldable three-jaw centralizer can be fast to the disc centering to application scope is wide, can decide the disc center of different external diameters. The folding three-jaw centralizer has low requirement on the strength of materials, can be processed by plastics or light metal, and has low quality. Meanwhile, the device is foldable, convenient to carry and place, convenient to use in hotels and families, capable of fixing parameters for centering of the same round surface, fast in operation and capable of improving work efficiency.

Description

Folding three-jaw centralizer

Technical Field

The utility model belongs to measure the location field, especially, relate to a foldable three-jaw centralizer.

Background

Nowadays, round furniture is widely used in house decoration and hotels, such as round tables, round stools and the like. They are practical and fit into Chinese architectural aesthetics. These furniture items are usually fitted with a number of components, for example a circular table on which a serving plate is placed, connected by a swivel core. When the two assemblies of the rotary plate are not provided with the limiting holes, the manual placing and centering are not accurate, so that the rotary plate is easy to collide with tableware in the rotating process, and the beverage is scattered or the tableware is dropped and damaged.

The existing centralizer technology is often used in the field of industrial production, most of equipment is made of metal, and the equipment is large in mass and volume and inconvenient to carry and store in daily life. And some centralizer devices are hydraulically or electrically driven, which is inconvenient for everyday use. The three-jaw centering device technology is mainly used for industrial clamp or shaft measurement, the equipment is generally matched with a connecting seat to be used on a machine tool, the working range is relatively fixed, and the working range is limited. And the measuring diameter range of the device is small, and the operation is more complicated.

Disclosure of Invention

In view of the above, the present invention provides a portable and easy-to-operate centralizer for use in home, hotel, etc. to solve the disadvantage that the current centralizer is not suitable for furniture measurement.

The utility model adopts the technical proposal that: a foldable three-jaw centralizer comprises a rack and three same rod groups, wherein the rack comprises a handle, a hole and three hinges, the handle is arranged at the upper end of the rack in a biased mode, the hole is arranged in the center of the rack and is funnel-shaped, the hinges are arranged on the edges of the rack, and two included angles are distributed at 120 degrees. The rod group part comprises a sliding rail and a sliding rod, the sliding rail is hollow, a through hole is formed in the top of the sliding rail, and a clamp is arranged on the side of the sliding rail. The slide bar part includes a scale and a locating pin, and the scale is embedded in slide bar upper portion, and the slide bar front end is arranged in to the locating pin.

As shown in figure 1, the three rod groups are hinged with the frame to form a revolute pair, the sliding rod is arranged in the sliding rail, one surface embedded with the dial is in the same direction with the through hole of the sliding rail, and the sliding rod forms a sliding pair on the sliding rail.

Furthermore, the pressing device presses and holds the sliding rod, and the pressing and releasing state can be controlled manually.

Furthermore, the cross section of the sliding rod is in transition fit with the cross section of the sliding rail, so that the sliding rod is prevented from falling off easily.

Furthermore, the rotation angle of the rod group and the rack is suitable and is about 0-100 degrees, and the use and the carrying are convenient.

Furthermore, the scale value is small and is close to one side of the positioning pin, and the scale value displayed in the through hole of the sliding rail 1 is the distance from the inner surface of the current positioning pin to the central hole.

The beneficial effects of the utility model are that, the utility model discloses a foldable three-jaw centralizer can be fast to the disc centering to application scope is wide, can decide out the disc center of different external diameters. The folding three-jaw centralizer has low strength requirement, can be processed by plastic or light metal, and has low quality. Simultaneously, the device is collapsible, conveniently carries, conveniently places, and the diameter can be fixed to the centering of same disc to the use of hotel, family of being convenient for, and quick operation improves work efficiency, increases the operating mass with rated load.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of the slide bar.

Fig. 3 is a bottom view of the housing.

Fig. 4 is a partial enlarged view of the funnel-shaped hole.

In the figure: the device comprises a frame 1, a frame 2, a centering hole 3, a hinge 4, a handle 5, a slide rail 6, a slide rod 7, a pressing tool 8, a slide rail through hole 9, a graduated scale 10 and a positioning pin.

Detailed Description

The invention will now be further elucidated with reference to the accompanying drawings.

In the folding three-jaw centralizer shown in fig. 1, three rod groups hinged with a frame 1 are distributed at an angle of 120 degrees in pairs, and a central hole 2 is positioned at the center of the frame 1. Each rod group has the same structure, a clamp 7 is arranged on the side surface of the sliding rail 5, and a sliding rod 6 is arranged inside the sliding rail 5. The slide bar 6 and the slide rail 5 form a moving pair with limited motion range under the assistance of side virtual constraint. The graduated scale 9 is embedded in the upper part of the slide bar 6, and the front end of the slide bar 6 is provided with a positioning pin 10. If the slide rail 5 is used as a reference system, when the slide bar 6 moves freely, the graduated scale 9 will move accordingly, so that the slide rail through hole 8 above the slide rail 5 can display different graduated scales 9.

As shown in fig. 1, during centering, the pressing tools 7 of any two side rod groups are firstly loosened, the slide rod 6 is pulled out until the slide rail through hole 8 displays the same scale, and then the pressing tools 7 are pressed tightly. The positioning pins 10 on two sides are abutted against the side surface of the measured object, then the pressing tool 7 of the third side bar group is loosened, the slide bar 6 is pulled out, the positioning pins on the side are tightly attached to the side surface of the measured object, namely, when the positioning pins 10 on the three sides are simultaneously tightly attached to the side surface of the measured object, the number of the next three slide rail through holes 8 is displayed. Taking the numerical value of two same readings as a₁Another numerical valueIs a₂The actual radius of the measured object is known as (a) from the geometrical relationship₁ ²＋a_1×a₂＋a₂ ²）÷（a₁＋2 a₂) Then the pressing tool on the three sides is released, the numerical value displayed by the through hole 8 of the slide rail on the three sides is adjusted to the calculated numerical value, and finally the folding three-jaw centering device is tightly attached to the measured object, as shown in figure 4, the marking pen is utilized to press the central hole into the central hole, and the central position is marked. When the sizes of the objects to be measured are the same, the folding three-jaw centering device with the set parameters can be moved to other objects to be measured for centering.

As shown in figure 3, the frame 1 is connected with the rod group by a hinge 3 to form a revolute pair, and a rotary allowance is left below the hinge 3, so that the sliding rod 6 can be tightened and the sliding rail 5 can be folded when the frame is not used or needs to be taken away, and the frame is easy to place and carry. As shown in figure 1, the handle 4 is offset above the frame, can be grasped and pushed and pulled when in use, is convenient to operate, and can be carried in the hand when in carrying, thereby being more convenient.

Claims

1. Foldable three-jaw centralizer, including frame and three the same pole group, its characterized in that: the central position of the frame is provided with a funnel-shaped central hole, a grip is offset on the frame, three rod groups clamp an angle of 120 degrees in pairs, and the rod groups are hinged with the edge of the frame.

2. The folding three-jaw centralizer of claim 1, wherein: the rod group comprises a slide rail and a slide rod, the slide rail is hollow, and the slide rod is arranged in the slide rail and is in transition fit and telescopic.

3. The folding three-jaw centralizer of claim 1, wherein: the lower part of the hinge is hollowed out, and allowance is left for the rotation of the rod group.

4. The folding three-jaw centralizer of claim 2, wherein: a through hole is arranged above the slide rail, and a pressing tool for pressing the slide bar is arranged on the side of the slide rail and can be released.

5. The folding three-jaw centralizer of claim 2, wherein: a graduated scale is embedded above the sliding rod, a positioning pin is arranged at the front end of the graduated scale, and the number of the graduated scale can be read from the through hole of the sliding rail.

6. The folding three-jaw centralizer of claim 5, wherein: the initial value of the graduated scale is close to one side of the positioning pin, the initial value is the distance from the positioning pin to the center of the rack when the sliding rod is completely retracted into the sliding rail, and the initial value at the moment is located on the leftmost side of the through hole of the sliding rail, which is observable.