Tool for correcting assembly precision of rotor assembly of hydraulic dynamometer

Abstract

The utility model provides a hydraulic dynamometer rotor assembly assembling precision correction tool which comprises a free end supporting structure used for supporting the free end of a hydraulic dynamometer rotor assembly, and the top of the free end supporting structure fixedly supports a free end bearing seat. The fixed end supporting structure is used for supporting the fixed end of the hydraulic dynamometer rotor assembly, and the top of the fixed end supporting structure fixedly supports the fixed end bearing seat; the hydraulic dynamometer rotor assembly is rotatably installed between the free end bearing seat and the fixed end bearing seat. The free end supporting structure and the fixed end supporting structure are fixedly installed on the top of a machine tool workbench through pressing plate bolt assemblies. The free end supporting structure, the fixed end supporting structure and the hydraulic dynamometer rotor assembly are coaxially arranged and installed. The rotor assembly can be horizontally installed on a machine tool workbench in a rotation axis mode, and therefore the purposes of rotating the rotor assembly and machining and correcting the outer circles and the end faces of couplings at the two ends of the rotor assembly are achieved.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic dynamometer manufacturing, and mainly relates to a hydraulic dynamometer rotor component assembly accuracy correction tool. Background Art

[0002] As a form of power transmission and parts assembly connection, the tapered interference fit connection has the characteristics of large load-bearing capacity and non-destructive disassembly and assembly. Compared with the traditional flat key or spline connection, it does not have the effect of the keyway structure weakening the force-bearing section of the shaft, and the matching parts are more convenient to disassemble and assemble. Therefore, this connection method is widely used in some heavy machinery and equipment.

[0003] The main shaft, rotor and coupling of the hydraulic dynamometer are generally connected by a taper interference fit. Generally, the main shaft is the contained part, and the rotor and coupling are the containing parts. The matching surface is a taper of 1:25. This taper ratio allows the contained part and the containing part to have a certain centering function, that is, the central axes of the two should basically coincide after installation. However, in actual applications, due to the large interference of the taper interference fit, the concentricity of the tooling during installation, the uniformity of the force during press-in, the quality and density of the mating parts themselves, etc., the runout tolerance of the end faces and outer circles of the couplings at both ends often cannot meet the design requirements when the rotor assembly of the hydraulic dynamometer is turned and checked after assembly. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the utility model provides a hydraulic dynamometer rotor assembly assembly accuracy correction tool. By making the tool, the support state of the rotor assembly is changed, so that the rotor assembly can rotate around the axis, thereby realizing the runout inspection and accuracy correction of the outer circle and end face of the coupling at both ends of the rotor assembly, thereby improving the assembly accuracy of the hydraulic dynamometer rotor assembly.

[0005] In order to realize the above technical features, the purpose of the utility model is achieved as follows: a hydraulic dynamometer rotor assembly assembly accuracy correction tool, including a free end support structure for supporting the free end of the hydraulic dynamometer rotor assembly, the top of the free end support structure fixedly supports the free end bearing seat;

[0006] Also included is a fixed end support structure for supporting the fixed end of the hydraulic dynamometer rotor assembly, the top of the fixed end support structure fixedly supports the fixed end bearing seat;

[0007] The hydraulic dynamometer rotor assembly is rotatably mounted between a free end bearing seat and a fixed end bearing seat;

[0008] The free end support structure and the fixed end support structure are fixedly mounted on the top of the machine tool workbench through a pressure plate bolt assembly;

[0009] The free end support structure, the fixed end support structure and the hydraulic dynamometer rotor assembly are installed in a coaxial arrangement.

[0010] A free end coupling is installed at the free end of the hydraulic dynamometer rotor assembly.

[0011] A fixed end coupling is installed at the fixed end of the hydraulic dynamometer rotor assembly.

[0012] The free end support structure and the fixed end support structure adopt the same structure.

[0013] The free end support structure and the fixed end support structure adopt the same structural form, and respectively include a base plate, and U-shaped bolt holes are symmetrically processed on both sides of the base plate. A vertical plate is fixedly installed on the top of the base plate through a stiffening plate, and an arc-shaped support is arranged on the top of the vertical plate. The end face of the arc-shaped support is processed with evenly arranged bolt holes, and the free end bearing seat and the fixed end bearing seat are respectively fixed by first bolts at the locations of the bolt holes.

[0014] The middle part of the vertical plate is symmetrically processed with material reduction holes, and the two sides of the vertical plate are symmetrically processed with hoisting holes.

[0015] A clamping hoop pressing structure is fixed to the top of the arc-shaped support, and the clamping hoop pressing structure includes a clamping hoop, and both ends of the clamping hoop are clamped and fixed to the top of the arc-shaped support by stud bolts and nuts; the clamping hoop presses the free end bearing seat and the fixed end bearing seat respectively.

[0016] The pressure plate bolt assembly comprises a pressure plate, one end of which is fixed to the top of the machine tool worktable through a T-slot nut and a second bolt, and the other end is press-fitted to the top of the base plate.

[0017] The free end bearing seat and the fixed end bearing seat form a transition fit with the corresponding free end support structure and the fixed end support structure.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model supports the outer circle of the bearing seats on both sides. The lower plane of the support seat is placed on the machine tool workbench. The upper part of the support seat is a semicircular structure with bolt holes on the side. The support seat is connected to the bearing seats on both sides by bolts to realize the rotation of the rotor assembly, and the precision correction of the end faces and outer circles of the couplings at both ends of the rotor assembly can be achieved on a general load-bearing floor boring machine.

[0020] 2. The utility model changes the support state of the rotor assembly by manufacturing tooling, so that the rotor assembly can rotate around the axis, thereby realizing the runout inspection and precision correction of the outer circle and end surface of the coupling at both ends of the rotor assembly.

[0021] 3. The above-mentioned free end support structure and fixed end support structure can realize reliable rotation support for the free end bearing seat and the fixed end bearing seat.

[0022] 4. The weight of the free-end support structure and the fixed-end support structure is reduced through the material-reducing holes, and the subsequent lifting of the entire free-end support structure and the fixed-end support structure is facilitated through the lifting holes.

[0023] 5. The above-mentioned clamping structure can realize reliable clamping and fixing of the entire free-end bearing seat and the fixed-end bearing seat.

[0024] 6. The above-mentioned pressure plate bolt assembly facilitates reliable fixation of the entire free end support structure and the fixed end support structure.

[0025] 7. Through the above transition fit, reliable fixed installation of the free end bearing seat and the fixed end bearing seat is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 This is a structural diagram of the tooling support of the utility model.

[0028] Figure 2 For the utility model Figure 1 Diagram of the partial support structure of the middle free end bearing seat.

[0029] Figure 3 For the utility model Figure 2 Partial support structure diagram of the middle fixed end bearing seat.

[0030] Figure 4 It is a three-dimensional diagram of the free end support structure and the fixed end support structure of the utility model.

[0031] In the figure: free-end coupling 1, free-end bearing seat 2, first bolt 3, free-end supporting structure 4, hydraulic dynamometer rotor assembly 5, pressure plate 6, second bolt 7, T-slot nut 8, machine tool worktable 9, fixed-end bearing seat 10, fixed-end supporting structure 11, fixed-end coupling 12, clamp 13, stud bolt 14, nut 15, arc support 16, vertical plate 17, material reduction hole 18, bottom plate 19, stiffening plate 20, U-bolt hole 21, lifting hole 22. DETAILED DESCRIPTION

[0032] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0033] Embodiment 1:

[0034] When the hydraulic dynamometer is working, its rotor assembly rotates around the axis of a set of bearing pairs consisting of free-end and fixed-end bearings, and the bearings at both ends are assembled in the bearing seats. To check or correct the assembly accuracy of the rotor assembly, this axis must be used as the inspection reference. Generally, the rotor assembly is placed in the housing. In this case, the free ends and fixed-end bearing seats of the rotor assembly are correspondingly installed on the housing, which can realize the rotation of the rotor. However, after the housing and the spindle assembly are assembled, the overall weight is overweight, and the general machine tool load-bearing cannot bear the overall weight, and the correction conditions for the accuracy of the couplings at both ends of the rotor assembly cannot be met.

[0035] By supporting the outer circle of the bearing seats on both sides, the lower plane of the support seat is placed on the machine tool workbench, the upper part of the support seat is a semicircular structure, and there are bolt holes on the side. The support seat is connected to the bearing seats on both sides by bolts to realize the rotation of the rotor assembly, and the precision correction of the coupling end faces and outer circles at both ends of the rotor assembly can be achieved on a general load-bearing floor boring machine.

[0036] See Figure 1-4 A hydraulic dynamometer rotor assembly assembly accuracy correction tool, comprising a free end support structure 4 for supporting the free end of the hydraulic dynamometer rotor assembly 5, and a free end bearing seat 2 fixedly supported on the top of the free end support structure 4; and also comprising a fixed end support structure 11 for supporting the fixed end of the hydraulic dynamometer rotor assembly 5, and a fixed end bearing seat 10 fixedly supported on the top of the fixed end support structure 11; the hydraulic dynamometer rotor assembly 5 is rotatably installed between the free end bearing seat 2 and the fixed end bearing seat 10; the free end support structure 4 and the fixed end support structure 11 are fixedly installed on the top of the machine tool workbench 9 through a pressure plate bolt assembly; the free end support structure 4, the fixed end support structure 11 and the hydraulic dynamometer rotor assembly 5 are installed in a coaxial arrangement. By adopting the above-mentioned tool, the free end support structure 4 and the fixed end support structure 11 are used to support the bearing seats at both ends of the rotor assembly, so that the rotor assembly can be horizontally installed on the machine tool workbench with a rotation axis, thereby achieving the purpose of rotating it and processing and correcting the outer circle and end surface of the coupling at both ends of the rotor assembly.

[0037] Furthermore, a free end coupling 1 is installed at the free end of the hydraulic dynamometer rotor assembly 5. A fixed end coupling 12 is installed at the fixed end of the hydraulic dynamometer rotor assembly 5.

[0038] Furthermore, the free end support structure 4 and the fixed end support structure 11 adopt the same structure. The free end support structure 4 and the fixed end support structure 11 adopt the same structural form, respectively including a bottom plate 19, U-shaped bolt holes 21 are symmetrically processed on both sides of the bottom plate 19, and a vertical plate 17 is fixedly installed on the top of the bottom plate 19 through a stiffening plate 20, and an arc support 16 is provided at the top of the vertical plate 17, and the end surface of the arc support 16 is processed with uniformly arranged bolt holes, and the bolt holes are respectively fixed to the free end bearing seat 2 and the fixed end bearing seat 10 through the first bolt 3. The above-mentioned free end support structure 4 and fixed end support structure 11 can realize reliable rotation support for the free end bearing seat 2 and the fixed end bearing seat 10.

[0039] Furthermore, the middle part of the vertical plate 17 is symmetrically processed with a material-reducing hole 18, and the two sides of the vertical plate 17 are symmetrically processed with a hoisting hole 22. The weight of the free-end support structure 4 and the fixed-end support structure 11 is reduced by the material-reducing hole 18, and the subsequent hoisting of the entire free-end support structure 4 and the fixed-end support structure 11 is facilitated by the hoisting hole 22.

[0040] Furthermore, a clamping structure is fixed to the top of the arc support 16, and the clamping structure includes a clamping hoop 13, and both ends of the clamping hoop 13 are clamped and fixed to the top of the arc support 16 by stud bolts 14 and nuts 15; the clamping hoop 13 respectively clamps the free end bearing seat 2 and the fixed end bearing seat 10. The above-mentioned clamping structure can realize reliable clamping and fixing of the entire free end bearing seat 2 and the fixed end bearing seat 10.

[0041] Furthermore, the pressure plate bolt assembly includes a pressure plate 6, one end of which is fixed to the top of the machine tool worktable 9 through a T-slot nut 8 and a second bolt 7, and the other end is press-fitted to the top of the bottom plate 19. The above-mentioned pressure plate bolt assembly facilitates reliable fixation of the entire free end support structure 4 and the fixed end support structure 11.

[0042] Furthermore, the free end bearing seat 2 and the fixed end bearing seat 10 form a transition fit with the corresponding free end support structure 4 and the fixed end support structure 11. Through the above transition fit, the free end bearing seat 2 and the fixed end bearing seat 10 are ensured to be reliably fixed and installed.

[0043] Embodiment 2:

[0044] The following is a specific implementation process of the Y60S-2 hydraulic dynamometer rotor assembly with a length of 6 meters and a total weight of 85 tons according to the utility model:

[0045] A method for correcting the assembly accuracy of a hydraulic dynamometer rotor assembly, the correction method comprising the following steps:

[0046] Step 1, positioning of the free end support structure 4 and the fixed end support structure 11:

[0047] According to the sizes of the free end bearing seat 2 and the fixed end bearing seat 10 of the hydraulic dynamometer rotor assembly 5, the installation positions of the free end support structure 4 and the fixed end support structure 11 are located on the machine tool workbench 9;

[0048] Step 2, fixing the free end support structure 4 and the fixed end support structure 11:

[0049] The free end support structure 4 and the fixed end support structure 11 are fixedly mounted on the machine tool workbench 9 by means of a pressure plate bolt assembly;

[0050] Step 3, hoisting and placing of the hydraulic dynamometer rotor assembly 5:

[0051] Lift the hydraulic dynamometer rotor assembly 5 by hoisting equipment, and ensure that the free end bearing seat 2 and the fixed end bearing seat 10 are supported on the top of the free end support structure 4 and the fixed end support structure 11 respectively, and connect the free end bearing seat 2 and the fixed end bearing seat 10 to the free end support structure 4 and the fixed end support structure 11 on both sides by bolts;

[0052] Step 4, fixing of the hydraulic dynamometer rotor assembly 5:

[0053] The free end bearing seat 2 and the fixed end bearing seat 10 are respectively pressed and fixed on the top of the free end support structure 4 and the fixed end support structure 11 by the clamping structure, and the hydraulic dynamometer rotor assembly 5 is arranged coaxially with the free end bearing seat 2 and the fixed end bearing seat 10;

[0054] Step 5, the accuracy correction of the end faces and outer circles of the free end coupling 1 and the fixed end coupling 12;

[0055] By rotating the hydraulic dynamometer rotor assembly 5 and starting the boring machine, the runout of the outer circle and the end face of the free end coupling 1 and the fixed end coupling 12 is checked, and then the accuracy correction of the end face and the outer circle is performed.

Claims

1. A hydraulic dynamometer rotor assembly assembly accuracy correction tool, characterized in that: It comprises a free end support structure (4) for supporting the free end of a hydraulic dynamometer rotor assembly (5), and a free end bearing seat (2) fixedly supported on the top of the free end support structure (4); It also includes a fixed end support structure (11) for supporting the fixed end of the hydraulic dynamometer rotor assembly (5), and a top fixed support fixed end bearing seat (10) of the fixed end support structure (11); The hydraulic dynamometer rotor assembly (5) is rotatably mounted between a free end bearing seat (2) and a fixed end bearing seat (10); The free end support structure (4) and the fixed end support structure (11) are fixedly mounted on the top of the machine tool workbench (9) via a pressure plate bolt assembly; The free end support structure (4), the fixed end support structure (11) and the hydraulic dynamometer rotor assembly (5) are installed in a coaxial arrangement.

2. According to claim 1, a hydraulic dynamometer rotor assembly assembly accuracy correction tool is characterized by: A free end coupling (1) is installed at the free end of the hydraulic dynamometer rotor assembly (5).

3. According to claim 1, a hydraulic dynamometer rotor assembly assembly accuracy correction tool is characterized by: A fixed end coupling (12) is installed at the fixed end of the hydraulic dynamometer rotor assembly (5).

4. The hydraulic dynamometer rotor assembly assembly accuracy correction tool according to claim 1, characterized in that: The free end support structure (4) and the fixed end support structure (11) adopt the same structure.

5. The hydraulic dynamometer rotor assembly assembly accuracy correction tool according to claim 1, characterized in that: The free end support structure (4) and the fixed end support structure (11) adopt the same structural form, and respectively comprise a base plate (19), U-shaped bolt holes (21) are symmetrically processed on both sides of the base plate (19), a vertical plate (17) is fixedly mounted on the top of the base plate (19) via a stiffening plate (20), an arc-shaped support (16) is arranged at the top of the vertical plate (17), and the end surface of the arc-shaped support (16) is processed with bolt holes arranged evenly, and the bolt holes are respectively fixed to the free end bearing seat (2) and the fixed end bearing seat (10) via first bolts (3).

6. The hydraulic dynamometer rotor assembly assembly accuracy correction tool according to claim 5, characterized in that: The middle portion of the vertical plate (17) is symmetrically processed with material reduction holes (18), and the two sides of the vertical plate (17) are symmetrically processed with lifting holes (22).

7. The hydraulic dynamometer rotor assembly assembly accuracy correction tool according to claim 5, characterized in that: A clamping hoop pressing structure is fixed to the top of the arc-shaped support (16), the clamping hoop pressing structure comprising a clamping hoop (13), the two ends of the clamping hoop (13) being clamped and fixed to the top of the arc-shaped support (16) by stud bolts (14) and nuts (15); the clamping hoop (13) respectively clamps the free-end bearing seat (2) and the fixed-end bearing seat (10).

8. The hydraulic dynamometer rotor assembly assembly accuracy correction tool according to claim 5, characterized in that: The pressure plate bolt assembly comprises a pressure plate (6), one end of which is fixed to the top of a machine tool worktable (9) via a T-slot nut (8) and a second bolt (7), and the other end of which is press-fitted onto the top of a base plate (19).

9. The hydraulic dynamometer rotor assembly assembly accuracy correction tool according to claim 1, characterized in that: The free end bearing seat (2) and the fixed end bearing seat (10) form a transition fit with the corresponding free end support structure (4) and the fixed end support structure (11).

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