Dual pivot axle combination articulating fitting mechanism

Abstract

The present application relates to each type through double hinge shaft or multiple hinge shaft connection pitch hinge technical field, especially in large equipment pitch mechanism, the double hinge shaft combination formula hinge assembly mechanism of the present application, including frame (1), arm support (2), hinge shaft (3), first positioning assembly (4), second positioning assembly (5), its technical key points are: hinge shaft (3) includes first cylindrical surface (31), second cylindrical surface (32), third cylindrical surface (33), first conical surface, second conical surface and stop location;Third cylindrical surface (33) and second conical surface before radial positioning stop (34), the diameter of second cylindrical surface (32) is greater than the diameter of first cylindrical surface (31), and the diameter of first cylindrical surface (31) is greater than the diameter of third cylindrical surface (33). Only a set of hinge assembly mechanism can realize the function that traditional two sets of different assembly structures can realize, and normal installation can be realized when greater axial deviation value is realized, the installation convenience and reliability are increased.

Description

Technical Field

[0001] This invention relates to the fields of open-pit mines, cement ports, bulk material storage yards, and engineering machinery and equipment, and particularly to a double-hinged shaft combined articulated assembly mechanism. Background Technology

[0002] Currently, in pitch mechanisms with relative rotation, in order to ensure the stable and reliable operation of the hinge assembly mechanism of the pitch mechanism, two sets of hinge assembly mechanisms are often used. The two sets of hinge assemblies need to be designed as two different assembly structures. One end is designed as a fixed hinge assembly group, and the other end is designed as a floating hinge assembly group. By using the fixed clearance size of the floating end hinge assembly, the existence of axial cumulative error can be resisted, thereby enabling the smooth assembly of the two sets of hinge shafts at the installation site.

[0003] Large welded components typically experience welding deformation after welding, leading to deviations from the design dimensions. Furthermore, unexpected deformation during transportation, hoisting, and handling of large welded components can cause significant axial dimensional deviations between the two hinge shafts of the frame and boom. Traditional fixed-end and floating-end combined hinge assembly requires assembling both hinge shafts and simultaneously hoisting them onto the frame, making it difficult to guarantee coaxiality. This can result in misalignment during on-site installation, necessitating on-site adjustments to the shafts. This not only reduces the service life of critical components such as hinge shafts, spherical bearings, and seals but also increases on-site repair work, wasting manpower and resources and significantly reducing on-site installation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-hinged shaft combined articulated assembly mechanism, which fundamentally solves the above-mentioned problems. A single articulated assembly structure can improve on-site installation efficiency and the tolerance for axial deviation. Furthermore, each hinge shaft assembly can be independently hoisted on-site, greatly increasing the convenience and reliability of installation. While ensuring the precision requirements of the articulated assembly, it can also absorb greater cumulative errors.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The dual-hinged shaft combined articulated assembly mechanism includes a frame, a boom, a hinge shaft, a first positioning component, and a second positioning component. Its key technical features are:

[0006] The hinge shaft includes a first cylindrical surface, a second cylindrical surface, a third cylindrical surface, a first conical surface, a second conical surface, and a stop for positioning;

[0007] There is a radial positioning stop between the third cylindrical surface and the second conical surface. The diameter of the second cylindrical surface is larger than that of the first cylindrical surface, and the diameter of the first cylindrical surface is larger than that of the third cylindrical surface.

[0008] The frame and boom are connected by two identical and mirror-arranged hinged assemblies. The hinged assemblies are connected and positioned by the outer end of the hinge shaft to the first positioning component. The first positioning component is connected to the cylindrical surface on the hinge shaft to constrain the radial degree of freedom of the hinge shaft. The first positioning component can slide freely within the width range of the cylindrical surface on the hinge shaft to release the axial degree of freedom for the axial free adjustment of the frame and boom.

[0009] The inner end of the hinge shaft is connected to and positioned by the second positioning component. The second positioning component is connected to the cylindrical surface and positioning stop on the hinge shaft and is used to position the hinge shaft axially and radially. The hinge shaft is fixed to the boom axially and radially by the second positioning component and the hinge shaft is fixed to the frame by the first positioning component.

[0010] The first positioning component includes a first conical sleeve, a second conical sleeve, a locking component, a protective cover, and a first retaining ring;

[0011] The outer ring of the first conical sleeve is cylindrical and connects to the cylindrical hole surface of the frame. The inner ring is conical and connects to the conical surface of the second conical sleeve. The outer ring of the second conical sleeve is conical and the inner ring is cylindrical and connects to the first cylindrical surface of the hinge shaft. The locking assembly connects the first conical sleeve and the second conical sleeve through the conical surface. After the locking assembly is locked, the connecting shaft is axially fixed to the frame by friction.

[0012] The second positioning assembly includes a spherical bearing, a first positioning and fixing end cap, a second positioning and fixing end cap, a seal, a positioning sleeve, a sealing cover, a shaft end cover, a fastening assembly, and a second fixing ring;

[0013] The spherical bearing connects the boom and the hinge shaft, radially fixing and releasing the rotational freedom. The first and second positioning and fixing end caps are connected to both sides of the spherical bearing for axial positioning. The fastening assembly fixes the spherical bearing, the first positioning and fixing end cap, the second positioning and fixing end cap, and the boom as a whole. The seal is connected between and for sealing the spherical bearing. The sealing cover is installed on the outer ring of the hinge shaft for protecting the hinge shaft and the spherical bearing. The second fixing ring is connected to the frame for connecting the sealing cover.

[0014] Furthermore, the frame includes a first ear plate shaft hole, a second ear plate shaft hole, a third ear plate shaft hole, and a fourth ear plate shaft hole arranged coaxially;

[0015] The first ear plate shaft hole, the second ear plate shaft hole, the third ear plate shaft hole, and the fourth ear plate shaft hole are used to radially position the first cylindrical surface and the second cylindrical surface of the hinge shaft.

[0016] Furthermore, the boom includes a first hinge hole and a second hinge hole for radial and axial positioning of the spherical bearing.

[0017] This invention achieves the functions that traditionally require two different assembly structures, and each hinge assembly is completely independent, eliminating the need to install both before hoisting them simultaneously. This allows for successful installation even with large deviations.

[0018] Each articulation mechanism can be installed independently. The first positioning component is connected to the first cylindrical surface of the connecting shaft and can slide freely along the axial direction. After the frame and boom are hoisted, the second positioning component is fixed to the boom. By adjusting the free sliding of the first positioning component along the axial direction, the cumulative axial deviation is absorbed. Then, the frame, boom and articulation shaft are fixed together by assembling the first conical sleeve, the second conical sleeve and the locking component. Each articulation shaft can be installed and fixed independently on site, which greatly increases the convenience and reliability of installation and can also absorb greater cumulative errors. Attached Figure Description

[0019] Figure 1 This is the main view of the double-hinge shaft combined hinge assembly mechanism of the present invention.

[0020] Figure 2 yes Figure 1 A magnified schematic diagram of part A in the middle.

[0021] Figure 3 This is a schematic diagram of the main structure of the hinge shaft in this invention.

[0022] Figure 4 yes Figure 2 A magnified schematic diagram of part C in the middle.

[0023] Figure 5 yes Figure 2 A magnified schematic diagram of part D in the middle section.

[0024] Figure 6 This is a schematic diagram of the main structure of the frame in this invention.

[0025] Figure 7 This is a schematic diagram of the main structure of the boom in this invention.

[0026] 1. Frame; 11. First ear plate shaft hole; 12. Second ear plate shaft hole; 13. Third ear plate shaft hole; 14. Fourth ear plate shaft hole;

[0027] 2 boom, 21 first hinge hole, 22 second hinge hole;

[0028] 3. Hinge shaft; 31. First cylindrical surface; 32. Second cylindrical surface; 33. Third cylindrical surface; 34. Locating stop;

[0029] 4. First positioning component, 401. First conical sleeve, 402. Second conical sleeve, 403. Locking component, 404. Protective cover, 405. First retaining ring;

[0030] 5 Second positioning assembly, 501 Spherical bearing, 502 First positioning and fixing end cap, 503 Second positioning and fixing end cap, 504 Seal, 505 Positioning sleeve, 506 Sealing cover, 507 Shaft end cover, 508 Fastening assembly, 509 Second fixing ring. Detailed Implementation

[0031] The following is combined Figures 1-7 The specific content of the present invention will be described in detail through specific embodiments.

[0032] like Figure 1 , Figure 2 As shown, the dual-hinged shaft combined articulated assembly mechanism includes a frame 1, a boom 2, a hinge shaft 3, a first positioning component 4, and a second positioning component 5. The frame 1 and the boom 2 are connected by two identical and symmetrically arranged articulated assemblies A and B. The articulated assemblies are connected and positioned by one end of the hinge shaft 3 to the first positioning component 4. The first positioning component 4 is connected to the cylindrical surface on the hinge shaft 3 to constrain the radial degree of freedom of the hinge shaft 3. The first positioning component 4 can slide freely within the width range of the cylindrical surface on the hinge shaft 3 to release the axial degree of freedom, which is used for the axial free adjustment of the frame 1 and the boom 2. As long as the axial deviation is within the width range of the cylindrical surface, it will not affect the on-site installation and fixation. Compared with the traditional structure, which accumulates all deviations to the floating end, the installation is more convenient and easier, and the deviation adjustment is also more convenient. The other end of the hinge shaft 3 is connected to and positioned by the second positioning component 5. The second positioning component 5 is connected to the cylindrical surface and positioning stop 34 on the hinge shaft 3, and is used to position the hinge shaft 3 axially and radially. The hinge shaft 3 is fixed to the boom 2 axially and radially by the second positioning component 5, and the hinge shaft 3 is fixed to the frame 1 by the first positioning component 4.

[0033] like Figure 3 As shown, the hinge shaft 3 includes a first cylindrical surface 31, a second cylindrical surface 32, a third cylindrical surface 33, a first conical surface, a second conical surface, and a stop for positioning. The third cylindrical surface 33 and the second conical surface have a radial positioning stop 34. The second cylindrical surface 32 is larger than the first cylindrical surface 31 and the third cylindrical surface 33.

[0034] like Figure 4As shown, the first positioning component 4 includes a first conical sleeve 401, a second conical sleeve 402, a locking component 403, a protective cover 404, and a first fixing ring 405. The outer ring of the first conical sleeve 401 is cylindrical and is connected to the cylindrical hole surface of the frame 1. The inner ring is conical and is connected to the conical surface of the second conical sleeve 402. The outer ring of the second conical sleeve 402 is conical and the inner ring is cylindrical and is connected to the first cylindrical surface 31 of the hinge shaft 3. The locking component 403 connects the first conical sleeve 401 and the second conical sleeve 402 through the conical surface. After the locking component 403 is locked, the connecting shaft is axially fixed to the frame 1 by friction.

[0035] like Figure 5 As shown, the second positioning assembly 5 includes a spherical bearing 501, a first positioning and fixing end cap 502, a second positioning and fixing end cap 503, a seal 504, a positioning sleeve 505, a sealing cover 506, a shaft end cover 507, a fastening assembly 508, and a second fixing ring 509. The spherical bearing 501 connects the boom 2 and the hinge shaft 3, radially fixing and releasing the rotational freedom. The first positioning and fixing end cap 502 and the second positioning and fixing end cap 503 are connected to both sides of the spherical bearing 501 for axial positioning of the spherical bearing 501. The fastening assembly 508 fixes the spherical bearing 501, the first positioning and fixing end cap 502, the second positioning and fixing end cap 503, and the boom 2 as a whole. The seal 504 is connected between and to seal the spherical bearing 501, improving the bearing's service life. The sealing cover 506 is installed on the outer ring of the hinge shaft 3 to protect the hinge shaft 3 and the spherical bearing 501. The second fixing ring 509 is connected to the frame 1 and is used to connect the sealing cover 506.

[0036] like Figure 6 As shown, the frame 1 includes two sets of four ear plate shaft holes in total. The first ear plate shaft hole 11, the second ear plate shaft hole 12, the third ear plate shaft hole 13 and the fourth ear plate shaft hole 14 are coaxial. The first ear plate shaft hole 11 and the second ear plate shaft hole 12 are used to radially position the first cylindrical surface 31 and the second cylindrical surface 32 of the hinge shaft 3. The third ear plate shaft hole 13 and the fourth ear plate shaft hole 14 are used to radially position the first cylindrical surface 31 and the second cylindrical surface 32 of the other set of hinge shafts 3.

[0037] like Figure 7 As shown, the boom 2 includes a first hinge hole 21 and a second hinge hole 22 for radial and axial positioning of the spherical bearing 501.

Claims

1. A double-hinged shaft combined articulated assembly mechanism, comprising a frame (1), a boom (2), a hinge shaft (3), a first positioning component (4), and a second positioning component (5), characterized in that: The hinge shaft (3) includes a first cylindrical surface (31), a second cylindrical surface (32), a third cylindrical surface (33), a first conical surface, a second conical surface, and a stop for positioning; There is a radial positioning stop (34) between the third cylindrical surface (33) and the second conical surface. The diameter of the second cylindrical surface (32) is larger than that of the first cylindrical surface (31), and the diameter of the first cylindrical surface (31) is larger than that of the third cylindrical surface (33). The frame (1) and the boom (2) are connected by two identical and mirror-arranged hinged assemblies. The hinged assemblies are connected and positioned by the outer end of the hinge shaft (3) to the first positioning component (4). The first positioning component (4) is connected to the cylindrical surface on the hinge shaft (3) to constrain the radial degree of freedom of the hinge shaft (3). The first positioning component (4) can slide freely within the width range of the cylindrical surface on the hinge shaft (3) to release the axial degree of freedom for the axial free adjustment of the frame (1) and the boom (2). The inner end of the hinge shaft (3) is connected to and positioned by the second positioning component (5). The second positioning component (5) is connected to the cylindrical surface and positioning stop (34) on the hinge shaft (3) for axial and radial positioning of the hinge shaft (3). The hinge shaft (3) is axially and radially fixed to the boom (2) by the second positioning component (5). The hinge shaft (3) is fixed to the frame (1) by the first positioning component (4). The first positioning component (4) includes a first conical sleeve (401), a second conical sleeve (402), a locking component (403), a protective cover (404), and a first retaining ring (405); The outer ring of the first conical sleeve (401) is cylindrical and is connected to the cylindrical hole surface of the frame (1). The inner ring is conical and is connected to the conical surface of the second conical sleeve (402). The outer ring of the second conical sleeve (402) is conical and the inner ring is cylindrical and is connected to the first cylindrical surface (31) of the hinge shaft (3). The locking assembly (403) connects the first conical sleeve (401) and the second conical sleeve (402) through the conical surface. After the locking assembly (403) is locked, the connecting shaft is axially fixed to the frame (1) by friction. The second positioning assembly (5) includes a spherical bearing (501), a first positioning and fixing end cap (502), a second positioning and fixing end cap (503), a seal (504), a positioning sleeve (505), a sealing cover (506), a shaft end cover (507), a fastening assembly (508), and a second fixing ring (509). The spherical bearing (501) connects the boom (2) and the hinge shaft (3) radially and releases the rotational freedom. The first positioning and fixing end cap (502) and the second positioning and fixing end cap (503) are connected to both sides of the spherical bearing (501) for axial positioning of the spherical bearing (501). The fastening assembly (508) fixes the spherical bearing (501), the first positioning and fixing end cap (502), the second positioning and fixing end cap (503) and the boom (2) as a whole. The seal (504) is connected between and for sealing the spherical bearing (501). The sealing cover (506) is installed on the outer ring of the hinge shaft (3) for protecting the hinge shaft (3) and the spherical bearing (501). The second fixing ring (509) is connected to the frame (1) for connecting the sealing cover (506).

2. The double-hinge shaft combined hinge assembly mechanism according to claim 1, characterized in that: The frame (1) includes a first ear plate shaft hole (11), a second ear plate shaft hole (12), a third ear plate shaft hole (13) and a fourth ear plate shaft hole (14) arranged coaxially; The first ear plate shaft hole (11), the second ear plate shaft hole (12) or the third ear plate shaft hole (13), and the fourth ear plate shaft hole (14) are used to radially position the first cylindrical surface (31) and the second cylindrical surface (32) of the hinge shaft (3).

3. The double-hinge shaft combined hinge assembly mechanism according to claim 1, characterized in that: The boom (2) includes a first hinge hole (21) and a second hinge hole (22) for radial and axial positioning joint bearings (501).

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