阅读说明：本技术 一种工程机械回转平台支承结构 (Engineering machine tool rotary platform bearing structure ) 是由 仇文宁 张海燕 付红 黄继战 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种工程机械回转平台支承结构,属于工程机械设备技术领域。该一种工程机械回转平台支承结构包括：上内圈,设有一圈周向的第一环形滑槽；上支撑环,上支撑环的下端面设有第二环形滑槽；下支撑环,上端面设有与第二环形滑槽相配合的第三环形滑槽,第二环形滑槽与第三环形滑槽之间设有多个第一球体；复合外圈,内侧壁设有与外倒锥面相配合的内倒锥面,内倒锥面设有与第一环形滑槽相配合的第四环形滑槽,第一环形滑槽与第四环形滑槽之间设有多个第二球体,内倒锥面还设有一圈周向凹槽。本发明的一种工程机械回转平台支承结构,不仅能使内部易失效的球体够避免承受较大的剪切力,还具有定心导向作用,进而使本结构具有较高的承载能力。(The invention discloses a supporting structure of a rotary platform of engineering machinery, and belongs to the technical field of engineering machinery equipment. This engineering machine tool rotary platform bearing structure includes: the upper inner ring is provided with a circle of circumferential first annular sliding grooves; the lower end surface of the upper support ring is provided with a second annular sliding groove; the upper end surface of the lower support ring is provided with a third annular sliding groove matched with the second annular sliding groove, and a plurality of first balls are arranged between the second annular sliding groove and the third annular sliding groove; the inner side wall of the composite outer ring is provided with an inner inverted conical surface matched with the outer inverted conical surface, the inner inverted conical surface is provided with a fourth annular sliding groove matched with the first annular sliding groove, a plurality of second balls are arranged between the first annular sliding groove and the fourth annular sliding groove, and the inner inverted conical surface is further provided with a circle of circumferential grooves. The supporting structure of the engineering machinery rotary platform can not only enable the ball body which is easy to lose efficacy in the inner part to avoid bearing larger shearing force, but also has the centering and guiding effects, so that the structure has higher bearing capacity.)

1. A supporting structure of a rotary platform of engineering machinery is characterized by comprising:

the outer side wall of the upper inner ring (101) is an outer inverted cone (102), and the outer inverted cone (102) is provided with a circle of circumferential first annular sliding grooves (103);

the upper end surface of the upper support ring (104) is fixedly connected with the small end surface of the upper inner ring (101), the outer diameter of the upper support ring (104) is larger than the diameter of the small end surface of the upper inner ring (101), the lower end surface of the upper support ring (104) is vertical to the axial direction of the upper support ring (104), and the lower end surface of the upper support ring (104) is provided with a second annular sliding groove (105);

the upper end face of the lower support ring (106) is vertical to the axial direction of the upper support ring (104), a third annular sliding groove (107) matched with the second annular sliding groove (105) is formed in the upper end face of the lower support ring (106), and a plurality of first balls (108) are arranged between the second annular sliding groove (105) and the third annular sliding groove (107);

compound outer lane, the inside wall be equipped with outer back taper face (102) matched with in inverted cone face (111), compound outer lane with go up support ring (104) and lower support ring (106) with the axle center, in inverted cone face (111) be equipped with first annular spout (103) matched with fourth annular spout (109), be equipped with a plurality of second spheroid (110) between first annular spout (103) and fourth annular spout (109), in inverted cone face (111) still are equipped with round circumference recess (112), a lateral wall of recess (112) with go up the up end ring overlap joint of support ring (104), another lateral wall of recess (112) with the lower terminal surface overlap joint of lower support ring (106).

2. The supporting structure of the engineering machinery rotating platform of claim 1, further comprising a lower inner ring (301) which is also in a circular truncated cone structure, wherein the outer side wall of the lower inner ring (301) is an outer regular conical surface (302), the outer regular conical surface (302) is provided with a circumferential fifth annular sliding groove (303), the inner side wall of the composite outer ring is further provided with an inner regular conical surface (304) matched with the outer regular conical surface (302), the inner regular conical surface (304) is provided with a sixth annular sliding groove (305) matched with the fifth annular sliding groove (303), and a plurality of third balls (306) are arranged between the fifth annular sliding groove (303) and the sixth annular sliding groove (305).

3. The supporting structure of the rotary platform of the construction machinery is characterized in that a circle of first annular liquid guiding groove (401) is formed in the upper end face of the upper supporting ring (104), the first annular liquid guiding groove (401) is located between the inner inverted conical surface (111) and the outer inverted conical surface (102), the upper supporting ring (104) is further provided with a first through hole (402), one end of the first through hole (402) is communicated with the bottom of the first annular liquid guiding groove (401), and the other end of the first through hole (402) is communicated with the wall of the second annular sliding groove (105).

4. The supporting structure of the rotary platform of the construction machinery as claimed in claim 3, wherein the lower end surface of the lower supporting ring (106) is provided with a ring of second annular liquid guiding groove (501), the second annular liquid guiding groove (501) is located between the inner positive conical surface (304) and the outer positive conical surface (302), the lower supporting ring (106) is further provided with a second through hole (502), one end of the second through hole (502) is communicated with the groove bottom of the third annular chute (107), and the other end of the second through hole (502) is communicated with the groove wall of the second annular liquid guiding groove (501).

5. A supporting structure of a rotary platform of an engineering machine according to claim 3, wherein the side walls of the upper inner ring (101) and the lower inner ring (301) are provided with annular grooves, and a dust-proof ring (601) is provided in each annular groove, and the dust-proof rings (601) are used for preventing dust from entering the first annular sliding groove (103), the second annular sliding groove (105), the third annular sliding groove (107), the fourth annular sliding groove (109), the fifth annular sliding groove (303) and the sixth annular sliding groove (305).

6. The supporting structure of the engineering machinery rotating platform of claim 1, wherein the composite outer ring comprises an upper outer ring (201) and a lower outer ring (202), the inner inverted conical surface (111) is arranged on the inner side wall of the upper outer ring (201), the inner regular conical surface (304) is arranged on the inner side wall of the lower outer ring (202), the lower outer ring (202) is connected with the upper outer ring (201) through a bolt, and the groove (112) is arranged at the joint surface of the inner side wall of the upper outer ring (201) and the inner side wall of the lower outer ring (202).

7. A supporting structure of a rotary platform of an engineering machine according to claim 3, characterized in that a positioning pin (7) is connected between the upper inner ring (101) and the upper supporting ring (104), and a positioning pin (7) is connected between the lower inner ring (301) and the lower supporting ring (106).

Technical Field

The invention relates to the technical field of engineering mechanical equipment, in particular to a rotary platform supporting structure of engineering machinery.

Background

In the field of engineering machinery, a slewing bearing is often used for transmission. The slewing bearing is generally composed of an inner ring, an outer ring and rolling elements, and can bear axial force and radial force and composite force of the axial force and the radial force.

When bearing the composite force of axial force and radial force, the rolling body in the existing engineering machinery rotary platform supporting structure needs to bear larger shearing force, and then when the load is larger, the ball body is easy to lose efficacy, and the whole supporting structure is damaged.

Disclosure of Invention

The invention aims to overcome the problems in the prior art, and provides a rotary platform supporting structure of engineering machinery, which not only enables spheres which are easy to lose efficacy in the interior to avoid bearing larger shearing force, but also has the centering and guiding functions, so that the structure has higher bearing capacity.

The invention provides a supporting structure of a rotary platform of engineering machinery, which comprises:

the outer side wall of the upper inner ring is an outer inverted conical surface, and the outer inverted conical surface is provided with a circle of circumferential first annular sliding grooves;

the upper end surface of the upper support ring is fixedly connected with the small end surface of the upper inner ring, the outer diameter of the upper support ring is larger than the diameter of the small end surface of the upper inner ring, the lower end surface of the upper support ring is vertical to the axial direction of the upper support ring, and a second annular sliding groove is formed in the lower end surface of the upper support ring;

the upper end face of the lower support ring is perpendicular to the axial direction of the upper support ring, a third annular sliding groove matched with the second annular sliding groove is formed in the upper end face of the lower support ring, and a plurality of first balls are arranged between the second annular sliding groove and the third annular sliding groove;

compound outer lane, the inside wall be equipped with the interior inverted cone face of outer back taper matched with, compound outer lane with go up support ring and under bracing ring coaxial, the interior inverted cone face be equipped with first annular spout matched with fourth annular spout is equipped with a plurality of second spheroids between first annular spout and the fourth annular spout, and the interior inverted cone face still is equipped with round circumference recess, a lateral wall of recess with go up the up end ring overlap joint of support ring, another lateral wall of recess with the lower terminal surface overlap joint of under bracing ring.

Preferably, the composite outer ring further comprises a lower inner ring which is also of a circular truncated cone structure, the outer side wall of the lower inner ring is an outer positive conical surface, the outer positive conical surface is provided with a circumferential fifth annular chute, the inner side wall of the composite outer ring is further provided with an inner positive conical surface matched with the outer positive conical surface, the inner positive conical surface is provided with a sixth annular chute matched with the fifth annular chute, and a plurality of third balls are arranged between the fifth annular chute and the sixth annular chute.

Preferably, go up the supporting ring up end and be equipped with the first annular liquid guide groove of round, first annular liquid guide groove is located between interior back taper face and the outer back taper face, go up the supporting ring and still be equipped with first through-hole, first through-hole one end communicate in first annular liquid guide groove tank bottom, the first through-hole other end communicate in second annular spout cell wall department.

Preferably, the lower end face of the lower support ring is provided with a circle of second annular liquid guide groove, the second annular liquid guide groove is located between the inner positive conical surface and the outer positive conical surface, the lower support ring is further provided with a second through hole, one end of the second through hole is communicated with the groove bottom of the third annular chute, and the other end of the second through hole is communicated with the groove wall of the second annular liquid guide groove.

Preferably, the upper inner ring side wall and the lower inner ring side wall are provided with annular grooves, each annular groove is internally provided with a dustproof ring, and the dustproof rings are used for preventing dust from entering the first annular sliding groove, the second annular sliding groove, the third annular sliding groove, the fourth annular sliding groove, the fifth annular sliding groove and the sixth annular sliding groove.

Preferably, the composite outer ring comprises an upper outer ring and a lower outer ring, the inner inverted conical surface is arranged on the inner side wall of the upper outer ring, the inner forward conical surface is arranged on the inner side wall of the lower outer ring, the lower outer ring is connected with the upper outer ring through a bolt, and the groove is arranged on a joint surface between the inner side wall of the upper outer ring and the inner side wall of the lower outer ring.

Preferably, a positioning pin is connected between the upper inner ring and the upper support ring, and a positioning pin is connected between the lower inner ring and the lower support ring.

Compared with the prior art, the invention has the beneficial effects that: the supporting structure of the engineering machinery rotary platform can not only enable the ball body which is easy to lose efficacy in the inner part to avoid bearing larger shearing force, but also has the centering and guiding effects, so that the structure has higher bearing capacity. Through setting up down the inner circle, can make compound outer lane can let bear the axial and keep away from the power of interior circle direction, can make on the engineering machine tool link firmly in the part on compound outer lane, link firmly in last interior epaxial part and link firmly and interior epaxial part homoenergetic each other and take place relative rotation down to increased the function of this structure, promoted the application scope of this structure. Through setting up first annular liquid guide groove and first through-hole, through setting up second annular liquid guide groove and second through-hole, can effectively lubricate and protect the third spheroid simultaneously. Through setting up the dust ring, can prevent that dust from getting into in first annular spout, second annular spout, third annular spout, fourth annular spout, fifth annular spout and the sixth annular spout, and then effectively protecting first spheroid, second spheroid and third spheroid. The composite outer ring is arranged into an upper outer ring and a lower outer ring which are connected through the bolt, so that the composite outer ring can be conveniently detached, installed and maintained in daily life. Through setting up the locating pin, can reduce the installation error of whole structure.

Drawings

FIG. 1 is a schematic top view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the A-A surface of the present invention;

FIG. 3 is a schematic front view of the structure of the present invention;

fig. 4 is a schematic structural diagram of the first sphere of the present invention.

Description of reference numerals:

101. the positioning pin comprises an upper inner ring, 102, an outer inverted cone surface, 103, a first annular chute, 104, an upper supporting ring, 105, a second annular chute, 106, a lower supporting ring, 107, a third annular chute, 108, a first ball body, 109, a fourth annular chute, 110, a second ball body, 111, an inner inverted cone surface, 112, a groove, 201, an upper outer ring, 202, a lower outer ring, 301, a lower inner ring, 302, an outer right cone surface, 303, a fifth annular chute, 304, an inner right cone surface, 305, a sixth annular chute, 306, a third ball body, 401, a first annular liquid guide groove, 402, a first through hole, 501, a second annular liquid guide groove, 502, a second through hole, 601, a dust prevention ring and 7.

Detailed Description

Detailed description of the preferred embodimentsthe following detailed description of the present invention will be given with reference to the accompanying drawings 1-4, but it should be understood that the scope of the present invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example 1:

as shown in fig. 1 to 4, the present invention provides a supporting structure for a revolving platform of an engineering machine, including: the outer ring structure comprises an upper inner ring 101, an upper supporting ring 104, a lower supporting ring 106 and a composite outer ring, wherein the upper inner ring 101 is in a circular truncated cone structure, the outer side wall of the upper inner ring 101 is an outer inverted conical surface 102, and the outer inverted conical surface 102 is provided with a circle of circumferential first annular sliding grooves 103; the upper end surface of the upper support ring 104 is fixedly connected with the small end surface of the upper inner ring 101, the outer diameter of the upper support ring 104 is larger than the diameter of the small end surface of the upper inner ring 101, the lower end surface of the upper support ring 104 is vertical to the axial direction of the upper support ring 104, and the lower end surface of the upper support ring 104 is provided with a second annular sliding groove 105; the upper end surface of the lower support ring 106 is vertical to the axial direction of the upper support ring 104, the upper end surface of the lower support ring 106 is provided with a third annular chute 107 matched with the second annular chute 105, and a plurality of first balls 108 are arranged between the second annular chute 105 and the third annular chute 107; compound outer lane inside wall be equipped with outer back taper surface 102 matched with in inverted taper surface 111, compound outer lane with go up support ring 104 and lower support ring 106 coaxial, in inverted taper surface 111 be equipped with first annular spout 103 matched with fourth annular spout 109 is equipped with a plurality of second spheroid 110 between first annular spout 103 and the fourth annular spout 109, and interior inverted taper surface 111 still is equipped with round circumference recess 112, a lateral wall of recess 112 with go up the up end ring overlap joint of support ring 104, another lateral wall of recess 112 with the lower terminal surface overlap joint of lower support ring 106.

The working principle of example 1 is now briefly described:

the upper inner ring 101 and the composite outer ring are respectively fixed on two parts of the engineering machinery which need to rotate relatively, and when the two parts need to be driven to rotate relatively, the composite outer ring is driven to rotate through a driving device. The composite outer ring can rotate relative to the upper inner ring 101 through the outer inverted conical surface 102, the fourth annular sliding groove 109, the second ball 110, the first annular sliding groove 103 and the inner inverted conical surface 111, and because the inner inverted conical surface 111 and the outer inverted conical surface 102 form a certain included angle with the axial direction of the composite outer ring, the composite outer ring exerts a force along the radial direction of the composite outer ring on the upper inner ring 101 through the second ball 110. When the composite outer ring bears a force axially pointing to the direction of the upper inner ring 101, a part of the force is applied to the upper inner ring 101 through the second balls 110, most of the force is applied to the lower support ring 106 through the side wall of the groove of the composite outer ring, the lower support ring 106 applies the part of the force to the upper support ring 104 through the first balls 108, the upper support ring 104 is applied to the upper inner ring 101 again, because the lower end surface of the upper support ring 104 is perpendicular to the axial direction of the upper support ring 104, the upper end surface of the lower support ring 106 is perpendicular to the axial direction of the upper support ring 104, and the composite outer ring is coaxial with the upper support ring 104 and the lower support ring 106, when the force in the vertical upward direction is transmitted, the first balls 108 cannot bear a shearing force, so that the first balls can bear a large extrusion force along the axial direction of the composite outer ring, and because the inner inverted surface 111 and the outer inverted surface 102 form a certain included angle with the horizontal plane, therefore, a certain guiding and centering effect is achieved when vertical upward force is transmitted, the upper support ring 104 and the lower support ring 106 are prevented from being dislocated, and the overall bearing capacity of the structure can be further increased.

The engineering machinery rotary platform supporting structure can not only enable the sphere which is easy to lose efficacy inside to avoid bearing larger shearing force when bearing forces in various directions, but also has the centering and guiding effects, so that the structure has higher bearing capacity.

Example 2:

in addition to embodiment 1, the composite outer ring can receive a force in a direction axially away from the upper inner ring 101.

As shown in fig. 2 and 4, the composite outer ring further includes a lower inner ring 301, which is also in a circular truncated cone structure, an outer side wall of the lower inner ring 301 is an outer positive conical surface 302, the outer positive conical surface 302 is provided with a circumferential fifth annular sliding groove 303, an inner side wall of the composite outer ring is further provided with an inner positive conical surface 304 matched with the outer positive conical surface 302, the inner positive conical surface 304 is provided with a sixth annular sliding groove 305 matched with the fifth annular sliding groove 303, and a plurality of third spheres 306 are arranged between the fifth annular sliding groove 303 and the sixth annular sliding groove 305.

Through setting up inner circle 301 down, when compound outer lane bore the axial and keep away from the power of last inner circle 101 direction, the power of this direction can transmit to supreme support ring 104 through compound outer lane, through last support ring 104, first spheroid 108, lower support ring 106 transmits to inner circle 301 down, inner circle 301 links firmly on engineering machine tool on another part with the relative pivoted of the part that compound outer lane fixed mounting was gone up with down, thereby can make and act on the power transmission of keeping away from last inner circle 101 direction on compound outer lane to the part with the engineering machine tool that inner circle 301 linked firmly down, and then can make compound outer lane can let and bear the axial and keep away from the power of last inner circle 101 direction. Furthermore, through setting up inner circle 301 down, can make on the engineering machine tool link firmly the part on compound outer lane, link firmly the part on last inner circle 101 and link firmly the part homoenergetic on inner circle 301 down and take place relative rotation each other to increased the function of this structure, promoted the application scope of this structure.

Example 3:

in addition to embodiment 2, the first ball 108 and the second ball 110 can be lubricated at the same time.

As shown in fig. 4, a circle of first annular liquid guiding groove 401 is formed in the upper end surface of the upper supporting ring 104, the first annular liquid guiding groove 401 is located between the inner reverse tapered surface 111 and the outer reverse tapered surface 102, the upper supporting ring 104 is further provided with a first through hole 402, one end of the first through hole 402 is communicated with the bottom of the first annular liquid guiding groove 401, and the other end of the first through hole 402 is communicated with the wall of the second annular sliding groove 105.

Through setting up first annular liquid guide groove 401 and first through-hole 402, when needs lubricate first spheroid 108 and second spheroid 110, through pour into in the lubricating liquid between back taper surface 111 and the outer back taper surface 102, lubricating liquid flows to first annular liquid guide groove 401 through fourth annular spout 109 and interior back taper surface 111, then flows to second annular spout 105 department through first through-hole 402 with first annular liquid guide groove 401 intercommunication, and then can lubricate and protect first spheroid 108 and second spheroid 110 simultaneously.

Example 4:

on the basis of example 3, in order to further enable effective lubrication and protection of the third sphere.

As shown in fig. 4, a circle of second annular liquid guiding groove 501 is formed on the lower end surface of the lower support ring 106, the second annular liquid guiding groove 501 is located between the inner positive conical surface 304 and the outer positive conical surface 302, the lower support ring 106 is further provided with a second through hole 502, one end of the second through hole 502 is communicated with the groove bottom of the third annular sliding groove 107, and the other end of the second through hole 502 is communicated with the groove wall of the second annular liquid guiding groove 501.

Through the arrangement of the second annular liquid guide groove 501 and the second through hole 502, the lubricating flow flowing into the second annular sliding groove 105 and the third annular sliding groove 107 can be guided to the position between the inner right conical surface 304 and the outer right conical surface 302, and then the lubricating oil flows into the fifth annular sliding groove 303, so that the third ball 306 can be effectively lubricated and protected at the same time.

As a preferable scheme, as shown in fig. 2 and 4, annular grooves are formed in the side walls of the upper inner ring 101 and the lower inner ring 301, and a dust-proof ring 601 is disposed in each annular groove, where the dust-proof ring 601 is used for preventing dust from entering the first annular chute 103, the second annular chute 105, the third annular chute 107, the fourth annular chute 109, the fifth annular chute 303 and the sixth annular chute 305. Through setting up dust ring 601, can prevent that dust from getting into in first annular spout 103, second annular spout 105, third annular spout 107, fourth annular spout 109, fifth annular spout 303 and the sixth annular spout 305, and then effectively protecting first spheroid 108, second spheroid 110 and third spheroid 306.

As a preferable scheme, as shown in fig. 2 and 4, the composite outer ring includes an upper outer ring 201 and a lower outer ring 202, the inner inverted conical surface 111 is disposed on an inner side wall of the upper outer ring 201, the inner regular conical surface 304 is disposed on an inner side wall of the lower outer ring 202, the lower outer ring 202 is connected to the upper outer ring 201 through a bolt, and the groove 112 is disposed on a joint surface between the inner side wall of the upper outer ring 201 and the inner side wall of the lower outer ring 202. The composite outer ring is arranged into the upper outer ring 201 and the lower outer ring 202, the upper outer ring 201 and the lower outer ring 202 are connected through the bolts, and daily disassembly, assembly and maintenance can be facilitated.

Preferably, as shown in fig. 2, a positioning pin 7 is connected between the upper inner ring 101 and the upper support ring 104, and a positioning pin 7 is connected between the lower inner ring 301 and the lower support ring 106. By providing the positioning pin 7, the mounting error of the entire structure can be reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.