CN210293541U

CN210293541U - Planet carrier static balance testing device

Info

Publication number: CN210293541U
Application number: CN201921580555.2U
Authority: CN
Inventors: 毕玉海; 刚传富
Original assignee: Sichuan Bonny Heavy Machinery Co ltd
Current assignee: Sichuan Bonny Heavy Machinery Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-04-10
Anticipated expiration: 2029-09-20

Abstract

The utility model relates to a planet carrier static balance testing arrangement, the loach carrying platform comprises a supporting fram, the support frame up end sets up a pair of support that can fluctuate, keeps somewhere the rotation space of planet carrier between two supports, and every support lower extreme passes through connecting bolt and support locking connection, and each support upper end sets up a pair of free rotation's rolling element, and the revolving axle lead of four rolling elements is parallel to each other or coincides, forms the supporting groove between two rolling elements on each support, and two supports pass through a supporting groove and support a balanced pivot jointly, balanced pivot includes that balanced axle both ends set up the optical axis section, sets up spacing shaft shoulder, installation shaft section, locking thread section between the two optical axis sections, the spline housing, preforming are put to the cover on the installation shaft section, the locking thread section goes up the cooperation and is used for the locking thread housing.

Description

Planet carrier static balance testing device

Technical Field

The utility model relates to a check out test set, concretely relates to planet carrier static balance testing arrangement.

Background

In order to ensure the running stability of the transmission device, the planet carrier of low-speed transmission needs to be statically balanced; the planet carrier of the high-speed transmission needs to be balanced dynamically. In an NGW planetary reducer, a planet carrier is generally made of a casting, and a single-arm planet carrier is made of 42CrMo or a similar material. The static balance of the planet carrier is usually carried out on a balance frame on parallel guide rails, and the cross section of the common balance guide rail has a flat knife shape and a trapezoid shape, so that the form is simple. Before the two working surfaces of the parallel guide rail are balanced, the level of the two working surfaces is adjusted in advance, and the error between the levelness and the parallelism is not more than 0.02 mm/m. The working length of the balance guide rail cannot be less than twice of the circumference of the shaft neck or the balance rotating shaft, and the part needs to roll on the guide rail for more than 2 circles. When balancing is performed on a parallel rail type balancing stand, a part to be balanced which is arbitrarily placed on a guide rail may roll along the guide rail until the center of gravity of the part is shifted to a stable region below the center of rotation. Such parts have a significant imbalance. In another case, the part does not roll along the rail, and the part is not obviously unbalanced. The balance guide rail of the balance frame has high technical requirements, errors of levelness and parallelism are not more than 0.02mm/m, the surface roughness is not less than Ra1.6, and the requirement on manufacturing precision is high for a rotator with large rolling radius and a longer rail. During the installation of the guide rail, the level must be adjusted by a level gauge and then the guide rail is fixed. When the obvious unbalanced part is in the process of leveling balance, the rotating moment of the part is larger than the rolling friction resisting moment, and the part rolls along the guide rail. When the static balance detection is carried out in the mode, the height of the guide rails at two sides cannot be adjusted, and only the rotating bodies with the same diameter can be measured; the guide rail is high in requirement, is difficult to process due to overlong length and is long in installation and adjustment time; the planet carrier is time-consuming and labor-consuming to install and the like.

Disclosure of Invention

The utility model aims at providing a planet carrier static balance testing arrangement to prior art's is not enough, its simple structure is compact, area is little to simple to use, improved work efficiency, the range of application is wider, controls the very easy adjustment of distance between the support, can also measure the rotator of the different diameters in both ends.

The purpose of the utility model is realized like this: the utility model provides a planet carrier static balance testing arrangement, includes the support frame, its characterized in that: but support frame up end sets up a pair of support that can fluctuate, keeps somewhere the gyration space of planet carrier between two supports, and every support lower extreme passes through connecting bolt and support frame locking connection, and each support upper end sets up a pair of free rotation's rolling element, and the revolving axle lead of four rolling elements is parallel to each other or the coincidence, forms the supporting groove between the two rolling elements on each support, and two supports pass through a supporting groove and support a balanced pivot jointly, balanced pivot sets up the optical axis section including balanced axle both ends, sets up spacing shaft shoulder, installation shaft section, locking thread section between the two optical axis sections, spline housing, preforming are put to the cover on the installation shaft section, the cooperation is used for the locking thread housing of axial locking preforming in the locking thread section.

The rolling body comprises a roller, a bearing and a short shaft, wherein the upper end of the support is provided with an opening through groove with an upward opening, the two ends of the short shaft are respectively supported in the opening through groove, the outer ring of the bearing is fixed with the inner hole of the roller, and the inner ring of the bearing is sleeved on the short shaft.

The roller is a rolling bearing.

The support is T type, sets up the connecting bolt with support frame threaded connection on the crossbeam section of this T type, still be provided with downwardly extending's adjusting bolt on the crossbeam section of T type, adjusting bolt's lower extreme is used in the face on the support frame.

And an involute spline is arranged on the outer circumference of the spline sleeve.

By adopting the scheme, the rolling element replaces a track, so that the part and the rolling element can rotate relatively, and the part can change from linear motion to circular motion. By adjusting the supports which can float up and down on the two sides, the static unbalance of the rotating bodies with different diameters on the two ends can be measured. The parts are combined with the balance rotating shaft, the spline sleeve, the nut and the like into a whole, the planet carrier is connected with the balance rotating shaft into a whole through the spline sleeve of the rotating shaft, gapless transmission is realized, the actual condition of the measured parts is truly reflected, the balance rotating shaft rotates due to gravity center deviation of the measured parts, and then the gravity center position of the parts can be determined. During measurement, the support frame can be used as a platform foundation and placed on a flat ground, the working table surface is basically required to be parallel to the ground, the left support and the right support are placed on the support frame, the peripheries of the supports are fixed through bolts, the coaxiality of the supports is adjusted firstly after the supports are installed, then the levelness of the supports is adjusted through the levelers, and the technical requirements are guaranteed. . The assembly of the parts is placed at a proper position of the support, the outer circles at two ends of the balance rotating shaft are in contact with the surface of the rolling body, the parts are rotated for multiple times, the lowest position is approximately determined, the unbalanced position is placed horizontally to allow the parts to rotate freely, and unbalance exists if the parts rotate. The unbalance weight is increased in the opposite direction or the approximate range of the unbalance point of the part is found, so that the weight is reduced, and the balance is realized through a plurality of operations. The rolling body is adopted to ensure that the friction resistance is very small, the unbalance testing is performed on parts such as the planet carrier, the occupied area is small, the use is simple and convenient, the working efficiency is improved, the application range is wide, the left support and the right support are easy to adjust, and other detection problems in the production process, such as non-standard and special-shaped planet carriers, are conveniently solved.

Adopt the utility model discloses, its simple structure is compact, area is little to simple to use, improved work efficiency, the range of application is wider, controls the very easy adjustment of distance between the support, can also measure the rotator of the different diameters in both ends.

The invention will be further explained with reference to the drawings and the specific embodiments.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a schematic structural view of the balance shaft in fig. 1.

In the drawing, 100 is a supporting frame, 200 is a support, 201 is a beam section, 210 is a connecting bolt, 220 is a rolling body, 221 is a roller, 222 is a short shaft, 230 is a supporting groove, 240 is a balance rotating shaft, 241 is a smooth shaft section, 242 is a limiting shaft shoulder, 243 is an installation shaft section, 244 is a locking thread section, 250 is a spline sleeve, 260 is a pressing sheet, 270 is a locking thread sleeve, 280 is an open through groove, 290 is an adjusting bolt, and 300 is a planet carrier.

Detailed Description

Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, an embodiment of a planet carrier static balance testing device includes a support frame 100, the upper end surface of the support frame 100 is provided with a pair of supports 200 capable of floating up and down, a rotation space of a planet carrier 300 is left between the two supports 200, the lower end of each support 200 is locked and connected with the support frame 100 through a connectable bolt 210, in this embodiment, the supports 200 are T-shaped, a connecting bolt 210 in threaded connection with the support frame 100 is arranged on a beam section 201 of the T-shape, a downward extending adjusting bolt 290 is further arranged on the beam section 201 of the T-shape, the lower end of the adjusting bolt 290 acts on the upper plate surface of the support frame 100, and height adjustment in the up-down direction can be realized by adjusting the length of the adjusting bolt extending out of the beam section 201 downwards. A pair of freely rotating rolling bodies 220 are arranged at the upper end of each support 200, and the pivot axes of the four rolling bodies 220 are parallel or overlapped; in this embodiment, the upper end of the support 200 is provided with an open through groove 280 with an upward opening, the rolling element 220 includes a roller 221, a bearing and a short shaft 222, the roller 221 can be a rolling bearing, the rolling bearing makes the friction force thereof far smaller than that of a sliding bearing, the friction resistance can be reduced, two ends of the short shaft 222 are respectively supported in the open through groove 280, the outer ring of the bearing is fixed with the inner hole of the roller 221, and the inner ring of the bearing is sleeved on the short shaft 222. A supporting groove 230 is formed between the two rolling bodies 220 on each support 200, the two supports 200 support a balance rotating shaft 240 together through the supporting groove 230, the balance rotating shaft 240 comprises optical shaft sections 241 arranged at two ends of the balance shaft, a limiting shaft shoulder 242, an installation shaft section 243 and a locking thread section 244 are arranged between the two optical shaft sections 241, a spline sleeve 250 and a pressing sheet 260 are sleeved on the installation shaft section 243, an involute spline is arranged on the outer circumference of the spline sleeve 250, the involute spline is easy to center automatically, and the installation precision is high. The locking thread segments 244 are fitted with locking thread sleeves 270 for axially locking the pressure tabs 260.

When the scheme is adopted to carry out the static balance measurement of the planet carrier 300, the support frame 100 is used as a platform foundation and placed on a flat ground, and the working table surface is basically required to be parallel to the ground. The left and right supports 200 are arranged on the support frame 100, and the peripheries of the supports are fixed by bolts; the planet carrier 300 is sleeved on the mounting shaft section 243, the spline sleeve 250 and the pressing sheet 260 are respectively matched with two ends of the planet carrier 300, the balance shaft, the spline sleeve 250, the pressing sheet 260 and the locking nut are combined into a whole through the locking nut, the planet carrier 300 is connected with the balance rotating shaft 240 through the spline sleeve 250, zero-clearance transmission is achieved, the actual condition of a part to be measured is truly reflected, and the part to be measured rotates due to gravity center deviation. The assembly of the parts is placed on the supporting groove 230 of the support 200 at both ends, and the outer circles of both ends of the balance rotating shaft 240 are in surface contact with the rolling bodies 220. The part is rotated for several times, the lowest position is approximately determined, the unbalanced position is placed horizontally to allow free rotation, and if rotation occurs, imbalance exists. The unbalance weight is increased in the opposite direction or the approximate range of the unbalance point of the part is found to reduce the weight, and the balance is achieved through a plurality of operations. Adopt the utility model discloses, be fit for such part of planet carrier 300 and do unbalanced test, area is little to simple to use, convenience has improved work efficiency, and the range of application is wider, controls and adjusts very easily between the support 200, conveniently solves other detection problems that production process appears, like nonstandard, special-shaped planet carrier 300.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a planet carrier static balance testing arrangement, includes support frame (100), its characterized in that: the upper end face of the support frame (100) is provided with a pair of supports (200) capable of floating up and down, a rotation space of a planet carrier (300) is reserved between the two supports (200), the lower end of each support (200) is in locking connection with the support frame (100) through a connecting bolt (210), the upper end of each support (200) is provided with a pair of rolling bodies (220) capable of rotating freely, the rotation axes of the four rolling bodies (220) are parallel to each other or overlapped, a supporting groove (230) is formed between the two rolling bodies (220) on each support (200), the two supports (200) jointly support a balance rotating shaft (240) through the supporting groove (230), the balance rotating shaft (240) comprises optical shaft sections (241) arranged at two ends of the balance shaft, a limiting shaft shoulder (242), an installation shaft section (243) and a locking thread section (244) are arranged between the two optical shaft sections (241), and a spline sleeve (250) and a spline sleeve, The locking thread section (244) is matched with a locking thread sleeve (270) used for axially locking the pressing piece (260).

2. The planet carrier static balance testing device according to claim 1, characterized in that: an opening through groove (280) with an upward opening is formed in the upper end of the support (200), the rolling body (220) comprises a roller (221), a bearing and a short shaft (222), two ends of the short shaft (222) are respectively supported in the opening through groove (280), the outer ring of the bearing is fixed with the inner hole of the roller (221), and the inner ring of the bearing is sleeved on the short shaft (222).

3. The planet carrier static balance testing device according to claim 2, characterized in that: the roller (221) is a rolling bearing.

4. The planet carrier static balance testing device according to claim 1, characterized in that: the support (200) is T-shaped, a connecting bolt (210) in threaded connection with the support frame (100) is arranged on a beam section (201) of the T-shaped, an adjusting bolt (290) extending downwards is further arranged on the beam section (201) of the T-shaped, and the lower end of the adjusting bolt (290) acts on the upper plate surface of the support frame (100).

5. The planet carrier static balance testing device according to claim 1, characterized in that: the outer circumference of the spline sleeve (250) is provided with involute splines.