Rolling device mounted on leveling hand wheel of base

Abstract

The utility model relates to a rolling device installed on a base leveling hand wheel, which comprises a retainer and a plurality of balls, the retainer is annular and is arranged in an annular gap between a T-shaped nut and a spherical washer, a plurality of spherical grooves are sequentially formed on the retainer along the circumferential direction of the retainer, and the balls are arranged in the spherical grooves. The multiple balls are movably connected with the multiple spherical grooves correspondingly, and the balls are connected with the T-shaped nut and / or the spherical washer in a rolling mode. Under the action of external force, the spherical washer exerts downward force on the retainer, the upper surface and the lower surface of the retainer are completely attached to the spherical washer and the T-shaped nut, the retainer makes contact with the T-shaped nut and / or the spherical washer through the multiple spherical grooves sequentially formed in the circumferential direction of the retainer, the contact face is small, abrasion is effectively reduced, and the service life of the retainer is prolonged. Tiny displacement errors generated in the rotating process of the hand wheel are avoided, the rotating stability of the hand wheel is effectively guaranteed, and the stability of the base is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement and mapping, in particular to a rolling device installed on a base leveling hand wheel. Background Art

[0002] There are many types of pedestals currently being produced and used, and the performance of the products varies. As we all know, the pedestal is mainly used as an auxiliary part, which is used in conjunction with measuring and mapping instruments such as plumb bobs, levels, theodolites, and total stations. The stability of the pedestal greatly affects the angle measurement accuracy of the theodolites, total stations, and other instruments that are matched with it. Therefore, a high-stability pedestal is also required in situations where high measurement accuracy is required.

[0003] During the leveling process of the base, the resistance gasket between the spherical washer and the T-nut will be squeezed under the action of external force. After a period of use, the resistance gasket will be severely worn, resulting in unsmooth rotation of the handwheel or loose connection between the upper and lower plates of the base, thereby causing slight displacement errors during the use of the instrument. The displacement error of the base directly affects the angular measurement accuracy of the instrument. Utility Model Content

[0004] In view of this, it is necessary to provide a rolling device installed on the base leveling hand wheel to solve the problem that the resistance gasket is severely worn so as to affect the measurement accuracy of the instrument.

[0005] The utility model provides a rolling device installed on a base leveling hand wheel, comprising a retaining frame and a plurality of balls, wherein the retaining frame is annular and is arranged in an annular gap between a T-nut and a spherical washer, the retaining frame is sequentially formed with a plurality of spherical grooves along its circumferential direction, the plurality of balls are respectively movably connected to the plurality of spherical grooves, and the balls are rollingly connected to the T-nut and / or the spherical washer.

[0006] Furthermore, the ball portion extends out of the spherical groove of the retaining frame and is rollingly connected to the T-nut.

[0007] Furthermore, the ball portion extends out of the spherical groove of the retaining frame and is rollingly connected with the spherical washer.

[0008] Furthermore, a plurality of openings corresponding to the plurality of spherical grooves are formed on one side of the retaining frame, and a portion of the ball extends to the outside of the spherical groove through the opening.

[0009] Furthermore, the middle part of the ball is located in the spherical groove, one side of the ball extends out of the spherical groove and is rollingly connected to the T-nut, and the other side of the ball extends out of the spherical groove and is rollingly connected to the spherical washer.

[0010] Furthermore, a plurality of openings corresponding to the plurality of spherical grooves are formed on both sides of the retaining frame, and both sides of the ball extend to outside the spherical grooves through the openings.

[0011] Furthermore, a plurality of spherical grooves are formed on both sides of the retaining frame, and the plurality of balls are respectively arranged in the plurality of spherical grooves on both sides of the retaining frame.

[0012] Furthermore, the plurality of spherical grooves on one side of the retaining frame are arranged alternately with the plurality of spherical grooves on the other side of the retaining frame.

[0013] Furthermore, the retaining frame includes a first annular plate and a second annular plate, the first annular plate and the second annular plate are detachably connected, and a plurality of grooves are provided on opposite sides, and the plurality of grooves on the first annular plate and the plurality of grooves on the second annular plate are connected to form a plurality of spherical grooves.

[0014] Furthermore, the balls are steel balls.

[0015] Compared with the prior art, under the action of external force, the spherical washer applies a downward force to the retaining frame, and the upper and lower surfaces of the retaining frame are completely fitted with the spherical washer and the T-nut. Since the retaining frame contacts the T-nut and / or the spherical washer through multiple spherical grooves arranged in sequence along its circumferential direction, the contact surface is small, which effectively reduces wear and avoids tiny displacement errors during the rotation of the handwheel, effectively ensures the smooth rotation of the handwheel, and improves the stability of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of a rolling device installed on a base leveling hand wheel provided in an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a T-nut in the prior art;

[0018] Figure 3 It is a structural schematic diagram of a spherical gasket in the prior art;

[0019] Figure 4 It is a structural schematic diagram of a resistance gasket in the prior art. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0021] like Figure 1-3As shown, the utility model provides a rolling device installed on a base leveling hand wheel, including a retaining frame 100 and a plurality of balls 200. The retaining frame 100 is annular and is arranged in an annular gap between a T-nut and a spherical washer. The retaining frame 100 is sequentially formed with a plurality of spherical grooves 110 along its circumferential direction. The plurality of balls 200 are respectively movably connected to the plurality of spherical grooves 110, and the balls 200 are rollingly connected to the T-nut and / or the spherical washer.

[0022] During implementation, under the action of external force, the spherical washer applies a downward force to the retaining frame 100, and the upper and lower surfaces of the retaining frame 100 are completely fitted with the spherical washer and the T-nut. Since the retaining frame 100 contacts the T-nut and / or the spherical washer through multiple spherical grooves 110 arranged in sequence along its circumferential direction, the contact surface is small, which effectively reduces wear and avoids tiny displacement errors during the rotation of the handwheel, effectively ensuring the smooth rotation of the handwheel and improving the stability of the base.

[0023] It should be noted that the existing rolling device is an annular gasket, such as Figure 4 As shown, the contact area between the spherical washer and the T-nut is large and the wear is severe.

[0024] The retainer 100 in this embodiment is annular and is disposed in the annular gap between the T-nut and the spherical washer. The retainer 100 is sequentially formed with a plurality of spherical grooves 110 along its circumferential direction. The retainer 100 is in rolling contact with the T-nut and / or the spherical washer via a plurality of balls 200.

[0025] Embodiment 1:

[0026] The ball 200 partially extends out of the spherical groove 110 and is rollingly connected with the T-nut.

[0027] Embodiment 2:

[0028] The ball 200 partially extends out of the spherical groove 110 and is rollingly connected with the spherical washer.

[0029] To facilitate the ball 200 to extend out of the spherical groove 110 of the retaining frame 100, in one embodiment, a plurality of openings corresponding to the plurality of spherical grooves 110 are formed on one side of the retaining frame 100, and a portion of the ball 200 extends out of the spherical groove 110 through the opening.

[0030] Embodiment 3:

[0031] The middle part of the ball 200 is located in the spherical groove 110 , one side of the ball 200 extends out of the spherical groove 110 and is rollingly connected to the T-nut, and the other side of the ball 200 extends out of the spherical groove 110 and is rollingly connected to the spherical washer.

[0032] To facilitate the ball 200 to extend out of the spherical groove 110 of the retaining frame 100, in one embodiment, multiple openings corresponding to the multiple spherical grooves 110 are formed on both sides of the retaining frame 100, and the ball 200 extends out of the spherical groove 110 through the openings on both sides.

[0033] Embodiment 4:

[0034] A plurality of spherical grooves 110 are formed on both sides of the retaining frame 100 , and a plurality of balls 200 are respectively disposed in the plurality of spherical grooves 110 on both sides of the retaining frame 100 .

[0035] In one embodiment, the multiple spherical grooves 110 on one side of the retainer 100 are arranged alternately with the multiple spherical grooves 110 on the other side of the retainer 100. Of course, in other embodiments, the multiple spherical grooves 110 on both sides may correspond one to one, or other arrangements may be adopted.

[0036] To facilitate the installation of the ball 200 into the spherical groove 110, in one embodiment, the retaining frame 100 includes a first annular plate and a second annular plate, which are detachably connected to each other and have multiple grooves on opposite sides. The multiple grooves on the first annular plate and the multiple grooves on the second annular plate are connected to form multiple spherical grooves 110.

[0037] In one embodiment, the ball 200 is a steel ball.

[0038] Compared with the prior art: under the action of external force, the spherical washer applies a downward force to the retaining frame 100, and the upper and lower surfaces of the retaining frame 100 are completely fitted with the spherical washer and the T-nut. Since the retaining frame 100 contacts the T-nut and / or the spherical washer through a plurality of spherical grooves 110 arranged in sequence along its circumferential direction, the contact surface is small, which effectively reduces wear and avoids tiny displacement errors during the rotation of the handwheel, effectively ensures the smooth rotation of the handwheel, and improves the stability of the base.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A rolling device mounted on a base leveling hand wheel, characterized in that: include: A retainer, which is annular and disposed in the annular gap between the T-nut and the spherical washer, wherein the retainer is sequentially formed with a plurality of spherical grooves along its circumferential direction; A plurality of balls are movably connected to the plurality of spherical grooves respectively, and the balls are rollingly connected to the T-nuts and / or spherical washers.

2. The rolling device installed on the base leveling hand wheel according to claim 1 is characterized in that: The ball portion extends out of the spherical groove and is rollingly connected to the T-nut.

3. The rolling device installed on the base leveling hand wheel according to claim 1, characterized in that: The ball portion extends out of the spherical groove and is in rolling connection with the spherical washer.

4. The rolling device installed on the base leveling hand wheel according to claim 2 or 3, characterized in that: A plurality of openings corresponding to the plurality of spherical grooves are formed on one side of the retaining frame, and a portion of the ball extends out of the spherical groove through the opening.

5. The rolling device installed on the base leveling hand wheel according to claim 1, characterized in that: The middle part of the ball is located in the spherical groove, one side of the ball extends out of the spherical groove and is rollingly connected to the T-nut, and the other side of the ball extends out of the spherical groove and is rollingly connected to the spherical washer.

6. The rolling device installed on the base leveling hand wheel according to claim 5, characterized in that: A plurality of openings corresponding to the plurality of spherical grooves are formed on both sides of the retaining frame, and both sides of the ball extend to outside the spherical grooves through the openings.

7. The rolling device installed on the base leveling hand wheel according to claim 1, characterized in that: A plurality of spherical grooves are formed on both sides of the retaining frame, and a plurality of the balls are respectively arranged in the plurality of spherical grooves on both sides of the retaining frame.

8. The rolling device mounted on the base leveling hand wheel according to claim 7, characterized in that: The plurality of spherical grooves on one side of the retaining frame are arranged alternately with the plurality of spherical grooves on the other side of the retaining frame.

9. The rolling device installed on the base leveling hand wheel according to claim 1, characterized in that: The retaining frame includes a first annular plate and a second annular plate, the first annular plate and the second annular plate are detachably connected, and a plurality of grooves are provided on opposite sides of the first annular plate, and the plurality of grooves on the first annular plate and the plurality of grooves on the second annular plate are connected to form a plurality of spherical grooves.

10. The rolling device installed on the base leveling hand wheel according to claim 1, characterized in that: The balls are steel balls.

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