CN2889755Y - Grounder type universal wheel - Google Patents
Grounder type universal wheel Download PDFInfo
- Publication number
- CN2889755Y CN2889755Y CN 200620080595 CN200620080595U CN2889755Y CN 2889755 Y CN2889755 Y CN 2889755Y CN 200620080595 CN200620080595 CN 200620080595 CN 200620080595 U CN200620080595 U CN 200620080595U CN 2889755 Y CN2889755 Y CN 2889755Y
- Authority
- CN
- China
- Prior art keywords
- rolling
- rolling member
- case
- universal wheel
- spin body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a rolling-ball universal wheel, which comprises a rolling ball; an encloser with an opening at lower part, wherein a plurality of antifriction devices are arranged inside the encloser, each antifriction device comprises a supporting device capable of rotating with a fixed axis, which directs to the center of the rolling ball; a first rolling assembly and a second rolling assembly that are arranged on the supporting device, wherein the first rolling assembly is a rolling wheel capable of rotating with the axis thereof, the rolling surface of the first rolling assembly contacts with the spherical surface of the rolling ball, and the second rolling assembly is a plurality of spheroid balls capable of rolling inside an annular track; or rolling wheels capable of rotating with the axis of the second rolling assembly, the rolling surface of the second rolling assembly directly or indirectly abuts against the inner lateral surface of the encloser. In use, the rolling frictions between the first rolling assembly and the rolling ball and between the second rolling assembly and the contact surface thereof are both rolling friction, so as to remarkably reduce the frictional resistance.
Description
Technical field
The utility model relates to the cardan wheel technical field, relates in particular to a kind of cardan wheel of bobbin type.
Background technology
At present, the centering type cardan wheel is one of most widely used cardan wheel, and the center of gravity of object that this cardan wheel bears always departs from the touchdown point of cardan wheel, thereby produces certain eccentric moment.Because the effect of this eccentric moment, the long-time use is easy to generate mechanically deform; When the object of which movement of cardan wheel carrying, this cardan wheel at first will rotate at touchdown point, and when direction was consistent, object could move, thereby during use centering type cardan wheel, certain cardan wheel revolution space must be arranged.
Another kind of common cardan wheel is a bobbin type universal wheel, its spin body can be in a case universal rolling, what have adds some balls in case, to reduce the friction between spin body and the case.This kind cardan wheel since the center of gravity of carrier and touchdown point on same plumb bob vertical, do not have eccentric moment, thereby can carry bigger load.But, in use, be cliding friction between spin body and the case, and at the inner bobbin type universal wheel that adds ball of case, between ball and the case, also all exist cliding friction between ball and the spin body, thereby its friction drag is bigger.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of bobbin type universal wheel, to solve the big problem of bobbin type universal wheel friction drag.
For solving the problems of the technologies described above, the technical solution of the utility model is: bobbin type universal wheel, comprise a spin body, a bottom has the case of opening, several antifriction apparatus are installed in the described case, each antifriction apparatus comprises a bracing or strutting arrangement that can rotate around fixed axis, and described fixed axis points to the centre of sphere of described spin body; Be installed on first rolling member and second rolling member of described bracing or strutting arrangement, described first rolling member is can be around the roller of self rotational, its rolling surface contacts with the sphere of described spin body, and the rolling surface of described second rolling member directly or indirectly relies on the inner surface of described case.
Because the fixed axis of bracing or strutting arrangement points to the centre of sphere of described spin body, so when bracing or strutting arrangement during around this rotational, the rolling surface of first rolling member will contact with the sphere of spin body in the moment.When the rolling body rolled, antifriction apparatus always rotated round fixed axis earlier, and when the rotating direction of first rolling member and spin body adapted, first rolling member began roll relative with the spin body, and the friction between its contact surface is a friction of rolling.Because the rolling surface of second rolling member directly or indirectly relies on the inner surface of described case, so, antifriction apparatus is in the fixed axis rotating process, and second rolling body rolls lean on the face contacted with it, makes the friction between its contact surface also be friction of rolling.That is to say, between first rolling member and the spin body and second rolling member be in contact with it and be friction of rolling between the face, thereby significantly reduced friction drag.
As a kind of improvement, second rolling member is a plurality of spherical ball that can roll in circular orbit, the centre of sphere of these balls constitutes a circular conical surface to the line of the spin body centre of sphere, and the centre of sphere of described spin body drops on the bus of described circular conical surface to the vertical line of the first rolling member rotation axis.Described vertical line direction is exactly the direction of transfer of application force between the spin body and first rolling member, described generatrix direction is exactly the direction of transfer of application force between the case and second rolling member, these two power in-lines make the effect that bracing or strutting arrangement can torque suspension, are not easy to take place mechanically deform.
As a kind of improvement, second rolling member is can be around the roller of self rotational, roller is two at least, these rollers are the circular arc array, its array radius and described first rolling member are corresponding around the radius of turn that described fixed axis rotates, and the rolling surface of described these rollers contacts with the inner surface of described case.Its effect is, the approximate in-line of the direction of transfer of application force between the direction of transfer of application force and case and second rolling member between the spin body and first rolling member, thus make bracing or strutting arrangement can not be subjected to the effect of torque, be not easy to take place mechanically deform.
As further improvement, described case is a pear shape housing, described antifriction apparatus is one, this antifriction apparatus is installed on the pears shank of described pear shape housing, be attached with the 3rd rolling member of annular array in the lower openings of described case, the rolling surface of described the 3rd rolling member contacts with the surface of described spin body.Level was pointed on the plane of the described spin body centre of sphere when annular array face of described the 3rd rolling member was positioned at this bobbin type universal wheel horizontal positioned.Its effect is, the relative position of rolling body and described case is remained unchanged, and its friction force minimum between the two.
Improve as another kind, the lower openings place of described case is equipped with and the detachable bonded assembly back-up ring of described case.The effect of back-up ring is that restriction spin body is deviate from from the lower openings of case, makes the opening size maximum of case, is convenient to the assembling of parts, can also stop that foreign material enter case simultaneously.
Improve as another kind, it also comprises a spin body brake equipment.Its effect is after adjust the position of the object carrier that bobbin type universal wheel supported, to make the braking of rolling body by brake equipment, thereby make object carrier keep a stable status.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the cutaway view of the utility model embodiment 1;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is the cutaway view of antifriction apparatus among the utility model embodiment 2;
Fig. 4 is the cutaway view of the utility model embodiment 3;
Fig. 5 is the scheme of installation of second rolling member among Fig. 4;
Fig. 6 is the cutaway view of antifriction apparatus among the utility model embodiment 4;
Fig. 7 is the cutaway view of the utility model embodiment 5;
Fig. 8 is the cutaway view of antifriction apparatus among the utility model embodiment 6;
Fig. 9 is the cutaway view of the utility model embodiment 7;
Figure 10 is the cutaway view of the utility model embodiment 8;
Figure 11 is the cutaway view of the utility model embodiment 9;
Figure 12 is the cutaway view of the utility model embodiment 10;
The specific embodiment
Embodiment 1: bobbin type universal wheel, as shown in Figure 1, comprise that 1, one top of a spin body is fixed with the case 2 that attaching parts 4, bottom have opening, and described case 2 is hemispherical shells concentric with described spin body 1; Described antifriction apparatus 3 is a plurality of, and in order to make spin body 1 stressed even, its quantity is at least three, and is uniform annular array.Several antifriction apparatus 3 are installed in the described case 2.
Described each antifriction apparatus 3 comprises a top board 33, be installed on first rolling member 31 and second rolling member 32 of described top board 33, pivot 34 is fixed in case 2 inwalls, the centre of sphere of the described spin body 1 of its orientation of its axis, top board 33 is sheathed on around rotating pivot 34, and, can certainly locate by forms such as shaft block rings by riveted joint realization axial location.Described first rolling member 31 is can be around the roller of self rotational, and its rolling surface contacts with the surface of described spin body 1; Second rolling member 32 is a plurality of spherical ball, case 2 is provided with annular groove 21 (as shown in Figure 2), top board 33 also is provided with the corresponding annular groove, these two annular grooves form a circular orbit, these spherical ball just are arranged in this circular orbit, thereby the rolling surface of second rolling member 32 is contacted with the inwall of case 2; The centre of sphere of described these balls forms a circular conical surface to the line of spin body 1 centre of sphere, and the centre of sphere of spin body 1 is positioned on the bus of described circular conical surface to the vertical line of the first rolling member rotation axis.Because the centre of sphere of the described spin body 1 of orientation of its axis of pivot 34, so when top board 33 during around this rotational, the rolling surface of first rolling member 31 will contact with the sphere of spin body 1 in the moment.
The lower openings place of described case 2 is equipped with back-up ring 5, and back-up ring 5 is captiveed joint with described case 2 by bolt 51.The effect of back-up ring 5 is that restriction spin body 1 is deviate from from the lower openings of case 2, makes the opening size maximum of case 2, is convenient to the assembling of parts, can also stop that foreign material enter case 2 simultaneously.
Attaching parts 4 in the present embodiment is rod attaching partss, its top be provided with can with object carrier bonded assembly screw thread, its bottom be fixed in case 2 outside faces and have an open slot radially.At the top of case 2, the fixed position of attaching parts 4 a spin body brake equipment 6 is installed, its effect is, after adjust the position of the object carrier that bobbin type universal wheel supported, make 1 braking of rolling body by brake equipment 6, thereby make object carrier keep a stable status.
Described spin body brake equipment 6 comprises that is stretched into case 2 in-to-in brake push rods 62 from case 2 tops, and this brake push rod 62 has one and is positioned at described case in-to-in first end and is positioned at exterior second end of described case; The first end bonded assembly slipper 61 with brake push rod 62; The second end pivotally attached joystick 64 with brake push rod 62; Be sheathed on described brake push rod 62 and the spring 63 of cramping between joystick 64 and case outside face; Described joystick 64 is hinged with described attaching parts 4 in the open slot of described attaching parts; One is returned only switch 65 with described joystick 64 pivotallys attached, ends the latch and serrated slot 41 clampings that are arranged at attaching parts open slot sidepiece of switch described time.Push joystick 64, brake push rod 62 drives slipper and moves to spin body 1, and slipper 61 produces friction force with spin body 1 surface, realizes friction braking; Return the latch that ends switch and be connected in the serrated slot 41, can make this bobbin type universal wheel keep braking mode; When returning the latch disengaging serrated slot 41 of ending switch, spring 63 moves up brake push rod 62, and slipper 61 disengages with spin body 1 surface, thereby makes this bobbin type universal wheel be in free rolling condition.
In the present embodiment, antifriction apparatus 3 can rotate around a fixed axis by the centre of sphere of spin body 1, its first rolling member 31 contacts with the sphere of described spin body 1, the rolling surface of second rolling member 32 contacts with the inside face of case 2, form a circular conical surface as the centre of sphere of these balls of second rolling member 32 to the line of spin body 1 centre of sphere, the centre of sphere of spin body 1 is positioned on the bus of described circular conical surface to the vertical line of the first rolling member rotation axis.Described vertical line direction is exactly the direction of transfer of application force between the spin body 1 and first rolling member 31, described generatrix direction is exactly the direction of transfer of application force between the case 2 and second rolling member 32, these two power in-lines, make the effect that pivot 34 can torque suspension, be not easy to take place mechanically deform.When spin body 1 rolled, antifriction apparatus 3 always rotated round pivot 34 earlier, when the rotating direction of first rolling member 31 and spin body 1 adapts, and 31 beginning and the 1 relative rollings of spin body of first rolling member, the friction between its contact surface is a friction of rolling; Antifriction apparatus 3 is in pivot 34 rotating process, and second rolling body 32 rolls in circular orbit, and the friction between its contact surface also is a friction of rolling.Thus, compare with known technology, this bobbin type universal wheel is in whole use, and the friction force between each main friction pairs is friction of rolling, and resistance reduces greatly.
Embodiment 2: bobbin type universal wheel, and its structure is substantially the same manner as Example 1, and its difference is the mounting means of antifriction apparatus 3.As shown in Figure 3, case 2 is provided with a flange 39 that extends to the inside, which is provided with guide through hole, the centre of sphere of the orientation of its axis spin body 1 of described guide through hole; Strut member 38 has mandrel and a supporting disk adaptive with guide through hole, be installed on the inner side end of supporting disk as the roller of first rolling member 31, ball-type second rolling member 32 is installed in supporting disk outside end face and the formed guide groove of encloser inner wall, the protruding described case of the mandrel of strut member 38, its end is provided with an axial location bearing pin or shaft block ring.The structure of strut member 38 dowel discs can be as embodiment 1, guarantee the centre of sphere of these balls circular conical surface of line formation to spin body 1 centre of sphere, the centre of sphere of spin body 1 is positioned on the bus of described circular conical surface to the vertical line of the first rolling member rotation axis.The advantage of this mounting means is the assembling of being convenient to antifriction apparatus 3.
Embodiment 3: as shown in Figure 4, bobbin type universal wheel, its structure is substantially the same manner as Example 1, comprises that 1, one top of a spin body is fixed with the case 2 that attaching parts 4, bottom have opening, is equipped with several antifriction apparatus 3 in the described case 2.Described each antifriction apparatus 3 comprises first rolling member 31 and second rolling member 32 that is installed on top board 33, top board 33 rotates around the pivot 34 that is fixed in case 2 inwalls, the extension line of pivot 34 axis points to the centre of sphere of described spin body 1, the lower openings place of described case 2 is equipped with back-up ring 5, at the top of case 2, the fixed position of attaching parts 4 a spin body brake equipment 6 is installed.
Its difference is, second rolling member 32 be at least two can be respectively around the roller of self rotational, the curved array of these rollers, second rolling member, 32 rolling surfaces contact with the inner surface of described case 2.Like this, can guarantee the distortion that around the rotational of described pivot 34 time, is not distorted of second rolling member 32.The radius of described arcuate array and described first rolling member 31 are around the radius of turn of the rotational of described pivot 34 corresponding (as shown in Figure 5), its effect is, make the approximate in-line of direction of transfer of application force between the direction of transfer of application force between the spin body 1 and first rolling member 31 and the case 2 and second rolling member 32, thereby make pivot 34 can not be subjected to the effect of torque, be not easy to take place mechanically deform.
Back-up ring 5 is threaded with described case 2.Compare with embodiment 1, its structure is more simple, and case 2 and back-up ring 5 need process internal and external screw thread respectively.
Attaching parts 4 is seat shape attaching partss in the present embodiment, which is provided with can with object carrier bonded assembly connecting bore, its underpart is fixed in case 2 outside faces and is had an open slot.
Described spin body brake equipment comprises that one is stretched into case in-to-in brake push rod 62 from case 2 tops, and this brake push rod 62 has one and is positioned at described case in-to-in first end and is positioned at exterior second end of described case; The first end bonded assembly slipper 61 with brake push rod; With the second end pivotally attached cam 66 of brake push rod, be sheathed on described brake push rod 62 and the spring 63 of cramping between described cam 66 and case outside face, described cam 66 is hinged with attaching parts 4 in described open slot; The joystick 64 that is fixed in described cam 66 stretches out the open slot of described attaching parts 4.Press joystick 64, cam 66 promotes brake push rod 62 and moves to spin body 1, when slipper 61 contacts with spin body 1 surface, produces friction force, realizes friction braking; Unclamp joystick 64, spring 63 moves up brake push rod 62, and slipper 61 disengages with spin body 1 surface, thereby makes this bobbin type universal wheel be in free rolling condition.
The principle and the effect of present embodiment are substantially the same manner as Example 1, when spin body 1 rolls, antifriction apparatus 3 always rotates round pivot 34 earlier, when the rotating direction of first rolling member 31 and spin body 1 adapts, 31 beginnings and the 1 relative rolling of spin body of first rolling member, the friction between its contact surface is a friction of rolling; Its difference is, antifriction apparatus 3 is in pivot 34 rotating process, second rolling body 32 rotates around pivot 34 with top board 33, inside face with case 2 is relative rolls for it, therefore, compare with known technology, this bobbin type universal wheel is in whole use, friction force between each main friction pairs is friction of rolling, can reach the effect that reduces friction drag equally.
Embodiment 4: bobbin type universal wheel, and its structure is substantially the same manner as Example 3, and its difference is the mounting means of antifriction apparatus 3.As shown in Figure 6, top board 33 has a flange that is sheathed on pivot 34, and the inside face of this flange is provided with groove, and needle bearing 3a is installed in the groove, make between pivot 34 and the top board 33 and realize friction of rolling, thereby further reduce antifriction apparatus 3 at the friction drag when fixed axis rotates.
Embodiment 5: bobbin type universal wheel as shown in Figure 7, comprises that 1, one top of a spin body is fixed with the approximate semisphere case 2 that attaching parts 4, bottom have opening, is equipped with several antifriction apparatus 3 in the described case 2.Described each antifriction apparatus 3 comprises a stepped shaft 36 that is provided with axially extending bore, and an end of stepped shaft 36 is provided with screw thread, and this end stretches out case 2 outsides and is fixed on the case 2 centre of sphere of the orientation of its axis spin body 1 of stepped shaft 36 by a nut 37; A bottom is provided with round flange mandrel 35, and this mandrel 35 is rotatably installed on the axially extending bore of stepped shaft 36, and its external part is provided with the bayonet lock of axial location.One secondary thrust baring is installed between the flange of the shaft shoulder of described stepped shaft 36 and mandrel 35, a row ball of clamping is second rolling member 32 between two thrust disc, be installed on the end face of a thrust disc of described thrust baring as the roller of first rolling member 31, its position is corresponding with second rolling member 32, and the rolling surface of described first rolling member 31 contacts with spin body 1.
When mandrel 35 rotates in the axially extending bore of stepped shaft 36, its friction is a cliding friction, consider that it is a kind of adjusting motion that antifriction apparatus 3 rotates around fixed axis, its purpose just allows first rolling member 31 adapt to the rotating direction of spin body 1, adapted to the rolling of spin body 1 when first rolling member 31 after, this adjusting motion just comes to an end, so the friction drag of bobbin type universal wheel is mainly from the relative motion friction of first rolling member 31 with spin body 1.With regard to present embodiment, the friction between first rolling member 31 and the spin body 1 is a friction of rolling, therefore, compares with known technology, and this bobbin type universal wheel can reach the effect that reduces friction drag equally.
Compare with embodiment 1, the centre of sphere of described these second rolling bodys 32 also forms a circular conical surface to the line of spin body 1 centre of sphere, the axis of this circular conical surface overlaps with described mandrel 35 fixed axis, but the centre of sphere of spin body 1 is not positioned on arbitrary the bus of described circular conical surface to the vertical line of first rolling member, 31 rotation axiss.Its influence that brings is, the application force of 1 pair first rolling member 31 of rolling body will be along component of radially generation of mandrel 35, and this component means a torque to mandrel 35, and long-time use makes mandrel 35 distortion easily.But if the diameter of spin body 1 is bigger, the diameter of thrust baring is smaller again, and this component is just smaller so, and this influence just can be ignored.
The lower openings place of described case 2 is equipped with back-up ring 5, and it is by eccentric wheel apparatus 52 back-up ring 5 to be clamped in described case 2.Its advantage is to realize the quick loading and unloading of back-up ring 5.
Attaching parts 4 is seat shape attaching partss in the present embodiment, which is provided with can with object carrier bonded assembly connecting bore.
This bobbin type universal wheel also comprises a spin body brake equipment 6.Described spin body brake equipment 6 comprises a cam 66 that is articulated in described case 2 inwall lugs, one end is connected in cam 66, the other end and stretches out the spring 63 that 64, one of the exterior joysticks of described case are connected in the outside face of the external part of joystick 64 and case.Depress joystick 64, cam 66 rotates, when its surface contacts with the surface of spin body 1, realize the friction braking of spin body 1, lift joystick 64, cam 66 disengagings contact with spin body 1, under the effect of spring 63, spin body 1 keeps free rolling condition.
Embodiment 6: bobbin type universal wheel, and its structure is substantially the same manner as Example 5, and its difference is the mounting means of antifriction apparatus 3.As shown in Figure 8, save mandrel 35, stepped shaft 36 is solid axles, and nut 37 is fixed in stepped shaft 36 on the case 2, the centre of sphere of the orientation of its axis spin body of stepped shaft 36.Thrust baring is installed on stepped shaft 36 axle journals, and realizes the axial location of thrust baring by riveted joint or shaft block ring.First rolling member 31 is installed on the thrust disc of thrust baring, and this thrust disc can rotate with respect to stepped shaft 36.
Embodiment 7: bobbin type universal wheel, and its structure is substantially the same manner as Example 1, and its difference is, the structure of antifriction apparatus 3 and brake equipment 6.
In the present embodiment, antifriction apparatus 3 comprises a roller type first rolling member 31; A pivot 34 that is fixed in case 2, the centre of sphere of the orientation of its axis spin body 1 of this pivot 34; One can be around the top board 33 of pivot 34 rotations; The rolling surface that described first rolling member 31 is installed on top board 33, the first rolling members 31 contacts with the sphere of spin body 1; Described pivot 34 is rivet type structures, be separately installed with the spherical ball that row roll along circular orbit between the end face of the end face of rivet head and top board 33 and between another end face of the inner surface of case 2 and top board 33, these balls are exactly second rolling member 32.The gravity of object carrier passes to spin body 1 by case 2, second rolling member 32, top board 33 and first rolling member 31 successively.This example structure is fairly simple, but top board 33 easy deformation, load-carrying capacity is little.
Embodiment 8: bobbin type universal wheel as shown in figure 10, comprises that 1, one top of a spin body is fixed with the case 2 that attaching parts 4, bottom have opening.Described attaching parts 4 is seat shape attaching partss, and its bottom is provided with and object carrier bonded assembly connecting bore; Described case is a pear shape housing; The pears shank of described pear shape housing is equipped with an antifriction apparatus 3, its structure is identical with antifriction apparatus 3 among the embodiment 1, thus its to have a friction force little, strut member is not allowed yielding advantage, but because it can only install one, so its bearing capacity is little with respect to embodiment 1.Certainly, also can adopt second rolling member 32 of a kind of embodiment of being different from 1 in the present embodiment, for example, second rolling member 32 is made as the truncated cone roller.
Be provided with the open slot of several annular arrays at the lower openings place of described case 2, one the 3rd rolling member 7 is installed in each open slot, the 3rd rolling member 7 is can be around the roller of self rotational, the rolling surface of these rollers contacts with the surface of described spin body 1 respectively, point on the horizontal surface of rolling body 1 centre of sphere when these rollers preferably are installed on this cardan wheel horizontal positioned, like this, the friction force minimum of itself and rolling body 1.The effect of the 3rd rolling member 7 is that the rolling body 1 and the relative position of described case 2 are remained unchanged.
Back-up ring 5 is connected in the lower openings of case 2 by screw, and is provided with and the corresponding notch of described case open slot.
Sidepiece at described case 2 is equipped with a spin body brake equipment 6, and it comprises a spring leaf 68 that is riveted on described case 2 inwalls, is fixed in the bracing frame of case 2 opening parts, is articulated in the distortion pressing plate 69 of bracing frame.By compressive strain pressing plate 69, make spring leaf 68 be out of shape and be close to the sphere of rolling body 1, realize friction braking.
Embodiment 9: bobbin type universal wheel, as shown in figure 11, structure is similar to embodiment 8, also has a pear shape case 2, the pears shank of described pear shape case 2 is equipped with an antifriction apparatus 3, is provided with the open slot of several annular arrays at the lower openings place of described case 2, and one the 3rd rolling member 7 is installed in each open slot, the 3rd rolling member 7 is can be around the roller of self rotational, and the rolling surface of these rollers contacts with the surface of described spin body 1 respectively.
The structure of described antifriction apparatus 3 is similar to the antifriction apparatus among the embodiment 3, comprises first rolling member 31 and second rolling member 32 that are installed on top board 33, and top board 33 rotates around pivot 34, and the extension line of pivot 34 axis points to the centre of sphere of described spin body 1.Unique difference of itself and embodiment 3 is that pivot 34 is attaching parts 4 extendible portions at case 2.Attaching parts 4 is rod attaching partss, and the one end is provided with and object carrier bonded assembly screw thread, and its other end stretches into case 2 from the pears shank of case 2, the centre of sphere of its orientation of its axis spin body 1.
Embodiment 10: bobbin type universal wheel, as shown in figure 12, its structure is substantially the same manner as Example 9, its difference is that described pivot 34 is stepped shaft, and a secondary thrust baring 3b is installed on it, thrust baring 3b leans vertically between the upper surface of the inside face of case 2 and top board 33, its effect is, reduces because the effect of axial force and the force of sliding friction that produces between the location end face of the upper surface of top board 33 and pivot 34, and can carry bigger gravity.
Also have a difference to be exactly, the 3rd rolling member 7 is a plurality of spherical ball that are installed in the pit, and described pit annular array is in the case sidewall.Same, when also preferably being positioned at this cardan wheel horizontal positioned, the installation site of these balls points on the horizontal surface of rolling body 1 centre of sphere, like this, the friction force minimum of itself and rolling body 1.
In addition, mentioning roller among all these embodiment, can be cydariform, sphere shape, also can be cylindrical, and its revolution place preferably is provided with needle bearing, to reduce friction.Case 2 can be the gyro-rotor form, also can be arranged to blank form.
The utility model is not limited to above-mentioned embodiment; can be as long as between spin body and case, be provided with around the antifriction apparatus of fixed axis rotation; and this fixed axis points to the centre of sphere of spin body; and this antifriction apparatus comprises and contacts first rolling member with the sphere of spin body and directly or indirectly rely on second rolling member of the inner surface of described case, all will fall within the utility model protection domain.
Claims (10)
1, bobbin type universal wheel, comprise a spin body (1), a bottom has the case (2) of opening, it is characterized in that: several antifriction apparatus (3) are installed in the described case (2), each antifriction apparatus (3) comprises a bracing or strutting arrangement that can rotate around fixed axis, and described fixed axis points to the centre of sphere of described spin body (1); Be installed on first rolling member (31) and second rolling member (32) of described bracing or strutting arrangement, described first rolling member (31) is can be around the roller of self rotational, its rolling surface contacts with the sphere of described spin body (1), and the rolling surface of described second rolling member (32) directly or indirectly relies on the inner surface of described case (2).
2, bobbin type universal wheel as claimed in claim 1 is characterized in that: described second rolling member (32) is a plurality of spherical ball that can roll in circular orbit; Perhaps
Described second rolling member (32) is can be around the roller of self rotational.
3, bobbin type universal wheel as claimed in claim 2, it is characterized in that: as these balls of second rolling member (32), its centre of sphere constitutes a circular conical surface to the line of spin body (1) centre of sphere, and the centre of sphere of described spin body (1) drops on the bus of described circular conical surface to the vertical line of first rolling member (31) rotation axis; Perhaps
Roller as second rolling member (32) is two at least, these rollers are the circular arc array, its array radius and described first rolling member (31) are corresponding around the radius of turn that described fixed axis rotates, and the rolling surface of described these rollers contacts with the inner surface of described case.
4, bobbin type universal wheel as claimed in claim 3 is characterized in that: the lower openings place of described case (2) is equipped with and the detachable bonded assembly back-up ring of described case (2) (5).
5, as described any bobbin type universal wheel of claim 1 to 4, it is characterized in that: described case (2) is and the concentric hemispherical shell of described spin body (1); Described antifriction apparatus (3) is at least three, and circular array.
6, as described any bobbin type universal wheel of claim 1 to 4, it is characterized in that: described case (2) is a pear shape housing, and described antifriction apparatus (3) is one, and this antifriction apparatus (3) is installed on the pears shank of described pear shape housing.
7, bobbin type universal wheel as claimed in claim 6, it is characterized in that: be attached with the 3rd rolling member (7) of annular array in the lower openings of described case (2), the rolling surface of described the 3rd rolling member (7) contacts with the sphere of described spin body (1).
8, bobbin type universal wheel as claimed in claim 7 is characterized in that: level was pointed on the plane of described spin body (1) centre of sphere when annular array face of described the 3rd rolling member (7) was positioned at this bobbin type universal wheel horizontal positioned.
9, bobbin type universal wheel as claimed in claim 8 is characterized in that: described the 3rd rolling member (7) is the spherical ball that is installed in the case sidewall pit, perhaps
Described the 3rd rolling member (7) be installed in the described case open slot can be around the roller of self rotational.
10, bobbin type universal wheel as claimed in claim 1 is characterized in that: it also comprises a spin body brake equipment (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080595 CN2889755Y (en) | 2006-01-21 | 2006-01-21 | Grounder type universal wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080595 CN2889755Y (en) | 2006-01-21 | 2006-01-21 | Grounder type universal wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2889755Y true CN2889755Y (en) | 2007-04-18 |
Family
ID=38020407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080595 Expired - Lifetime CN2889755Y (en) | 2006-01-21 | 2006-01-21 | Grounder type universal wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2889755Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562640A (en) * | 2016-08-10 | 2019-04-02 | 潘特公司 | Item motion system, ball wheel and relevant apparatus and method |
| CN108186212B (en) * | 2017-12-20 | 2020-03-06 | 焦鸿生 | Sickbed with universal wheels |
-
2006
- 2006-01-21 CN CN 200620080595 patent/CN2889755Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562640A (en) * | 2016-08-10 | 2019-04-02 | 潘特公司 | Item motion system, ball wheel and relevant apparatus and method |
| CN108186212B (en) * | 2017-12-20 | 2020-03-06 | 焦鸿生 | Sickbed with universal wheels |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1803478A (en) | Bobbin type universal wheel | |
| CN107378875A (en) | Rotary table | |
| CN2889755Y (en) | Grounder type universal wheel | |
| CN201989839U (en) | Device for preventing column casing of steering column from shaking and rotating and steering column employing same | |
| CN201397443Y (en) | Two dimensional cradle head | |
| CN205678083U (en) | The spring energy-storage tumbler that can be accurately positioned | |
| CN101546095B (en) | Two-dimensional pan-tilt | |
| CN207932977U (en) | Tire-mold forklift slings | |
| CN219198463U (en) | Small-resistance telescopic rotating structure | |
| CN101491996A (en) | Heavy-load mini elastic universal wheel | |
| CN111927880A (en) | Ball bearing capable of swinging and rotating | |
| CN220706249U (en) | Mechanical floating device | |
| CN216241860U (en) | Antidetonation anti-drop's axle sleeve | |
| CN215338233U (en) | Size detection alarm device for steering knuckle | |
| CN217172234U (en) | Turnover mechanism and semiconductor feeding equipment | |
| CN201578792U (en) | Friction wheel | |
| CN2620915Y (en) | Rotary base of display | |
| CN219655145U (en) | Spring tray of shock absorber | |
| CN212949980U (en) | Load-bearing universal wheel for frame | |
| CN216343414U (en) | Self-aligning roller bearing convenient to equipment | |
| CN219197931U (en) | Mechanism capable of axially moving rotating device | |
| CN211516774U (en) | Center hole clamping structure for automobile steering knuckle clamping device | |
| CN214946246U (en) | Gear speed reducer capable of reducing installation error and service life influence | |
| CN210682143U (en) | Gravure press material loading rotary platform | |
| CN113531083B (en) | Flexible space cam mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090318 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |