A kind of auxiliary transmission universal shaft dynamic balancing frock

Abstract

The utility model belongs to locomotive overhauling technical field, specifically disclose a kind of auxiliary transmission universal shaft dynamic balance tool, including left support, right support, connecting rod and nut A, the left support include baffle, mounting seat, driving shaft, connecting flange A, bolt, nut B and bearing;The driving shaft is sequentially provided with flange B, positioning shaft A, installation shaft A, threaded shaft B and installation shaft B from right to left;The left end of the driving shaft is through the center hole of baffle and mounting seat, and is fixed by nut B, bearing is arranged between driving shaft and mounting seat, baffle is connected by bolt with the right end surface of mounting seat;The connecting flange A is installed on the installation shaft B of driving shaft;The structure of right support and left support is similar mirror image setting;The tool can satisfy the quick clamping and dynamic balance process support of Dongfeng series diesel locomotive auxiliary transmission universal shaft, both reduce labour intensity, and improve efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of locomotive maintenance technology, specifically relating to a dynamic balancing fixture for an auxiliary transmission universal joint. Background Technology

[0002] The auxiliary drive universal joint is used to transmit power from the diesel engine to the cooling fan and the front traction motor fan. Each end of the universal joint has a flange, which is bolted to the corresponding unit flange. The splined shaft and splined sleeve are connected to the flanges by cross pins. The cross pins are mounted on four universal joint bearings, and the outer rings of the bearings are fastened to the fork head seats by bolts using bearing caps. The splined shaft and splined sleeve are mated together and can move axially relative to each other to accommodate the need for continuous adjustment of the universal joint length during locomotive operation.

[0003] When overhauling the auxiliary drive universal joint, the assembled auxiliary drive universal joint is installed on a dynamic balancing machine for a dynamic balancing test. The imbalance during the dynamic balancing test should not exceed 100 g·cm. Currently, there is a lack of dynamic balancing installation fixtures for drive shafts. To solve this problem, we designed and manufactured this balancing fixture. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model provides an auxiliary transmission universal joint dynamic balancing tool.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an auxiliary transmission universal joint dynamic balancing fixture, comprising a left support, a right support, a connecting rod, and a nut A. The left support includes a baffle, a mounting base, a drive shaft, a connecting flange A, bolts, a nut B, and a bearing. The drive shaft, from right to left, is provided with a flange B, a positioning shaft A, a mounting shaft A, a threaded shaft B, and a mounting shaft B. The flange B, positioning shaft A, mounting shaft A, threaded shaft B, and mounting shaft B are an integral structure. The right end of the flange B is a disc, and the left end is a truncated cone. Multiple through holes C are evenly distributed on the right end face of the disc of the flange B. The left end of the drive shaft passes through the center hole of the baffle and the mounting base and is fixed by the nut B. A bearing is provided between the drive shaft and the mounting base. The baffle is connected to the right end face of the mounting base by bolts. The connecting flange A is mounted on the mounting shaft B of the drive shaft.

[0006] The right bracket includes a baffle, a mounting base, a driven shaft, a bolt, and a nut B; the right bracket is structurally similar to the left bracket and is arranged as a mirror image.

[0007] The middle part of the connecting rod is a steel pipe, and both ends of the connecting rod are respectively provided with threaded shafts A; the threaded shafts A of the connecting rod are respectively installed on the through holes A of the baffle.

[0008] The baffle is a circular flat plate with a thickness that matches the width of the positioning shaft A. The baffle has a central hole at its center with a diameter larger than the outer diameter of the positioning shaft A. Multiple threaded holes A are evenly distributed around the edge of the central hole of the baffle, and multiple through holes A are evenly distributed around the outer edge of the baffle with a diameter larger than the diameter of the threaded shaft A.

[0009] The length of the mounting base is adapted to the mounting shaft A. The center of the end face of the mounting base is provided with a transverse through hole. The left and right end faces of the mounting base are respectively provided with countersunk holes for mounting bearings. Multiple mounting holes A are evenly distributed on the edge of the right end face of the mounting base. The mounting holes A are adapted to the threaded holes A.

[0010] The connecting flange A has a mounting hole B at its center, and a keyway is provided on the inner wall of the mounting hole B. The mounting hole B is adapted to the mounting shaft B. The right end face of the connecting flange A has a through hole D, which is connected to external equipment.

[0011] The driven shaft is provided with a flange C, a positioning shaft B, a mounting shaft C and a threaded shaft C from left to right; the flange C, positioning shaft B, mounting shaft C and threaded shaft C are an integral structure, and the flange C, positioning shaft B, mounting shaft C and threaded shaft C are arranged in a mirror image similar to the structure of the driving shaft.

[0012] The bearing is installed in the countersunk holes at both ends of the mounting base. The outer diameter of the bearing is adapted to the countersunk hole, and the inner hole of the bearing is adapted to the mounting shaft A.

[0013] The diameter of the steel pipe is larger than the diameter of the through hole C.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a dynamic balancing fixture for auxiliary transmission universal joints. The fixture is placed on a dynamic balancing test bench, and the threaded fastening stroke at both ends of the connecting rod is adjusted to meet the process mounting requirements of universal joints of different lengths. This fixture can meet the requirements for quick mounting and dynamic balancing process support of auxiliary transmission universal joints for Dongfeng series diesel locomotives, which reduces labor intensity and improves efficiency. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is the front view of the left support.

[0017] Figure 3 This is the front view of the right bracket.

[0018] Figure 4 This is the front view of the connecting rod.

[0019] Figure 5 This is a side view of the baffle.

[0020] Figure 6 This is a cross-sectional view of the mounting base.

[0021] Figure 7 This is the front view of the drive axis.

[0022] Figure 8 This is the front view of connecting flange A.

[0023] Figure 9 This is a side view of connecting flange A.

[0024] Figure 10 This is the front view of the right bracket.

[0025] In the diagram: 1. Left bracket, 2. Right bracket, 3. Connecting rod, 4. Nut A, 5. Baffle, 6. Mounting seat, 7. Drive shaft, 8. Connecting flange A, 9. Driven shaft, 11. Bolt, 12. Nut B, 13. Bearing, 31. Steel pipe, 32. Threaded shaft A, 51. Through hole A, 52. Threaded hole A, 61. Countersunk hole, 63. Mounting hole A, 71. Flange B, 72. Mounting shaft A, 73. Mounting shaft B, 74. Through hole C, 75. Threaded shaft B, 76. Positioning shaft A, 81. Mounting hole B, 82. Through hole D, 91. Flange C, 92. Mounting shaft C, 95. Threaded shaft C, 96. Positioning shaft B. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] The specific embodiments of this utility model are further described in detail below with reference to the accompanying drawings: An auxiliary transmission universal joint dynamic balancing fixture includes a left support 1, a right support 2, a connecting rod 3, and a nut A4. The left support 1 includes a baffle 5, a mounting base 6, a drive shaft 7, a connecting flange A8, bolts 11, a nut B12, and a bearing 13. The drive shaft 7 is provided with a flange B71, a positioning shaft A76, a mounting shaft A72, a threaded shaft B75, and a mounting shaft B73 from right to left. B71, positioning shaft A76, mounting shaft A72, threaded shaft B75, and mounting shaft B73 are coaxial and integral; the right end of flange B71 is a disc, and the left end is a truncated cone; multiple through holes C74 are evenly distributed on the right end face of the disc of flange B71; the left end of the drive shaft 7 passes through the center hole of baffle 5 and mounting base 6, and is fixed by nut B12; a bearing 13 is provided between drive shaft 7 and mounting base 6; in actual use, the mounting shaft A72 of drive shaft 7 has bearing 13 mounting positions at both ends;

[0028] The baffle 5 is connected to the right end face of the mounting base 6 by bolts 11. The baffle 5 is a circular flat plate, and the thickness of the baffle 5 is adapted to the width of the positioning shaft A76. The baffle 5 has a central hole at its center, and the diameter of the central hole is larger than the outer diameter of the positioning shaft A76. Multiple threaded holes A52 are evenly distributed around the edge of the central hole of the baffle 5, and multiple through holes A51 are evenly distributed around the outer edge of the baffle 5. The diameter of the through holes A51 is larger than the diameter of the threaded shaft A32. The function of the baffle 5 is to connect the left support 1 and the right support 2 through the connecting rods 3, so that the left support 1 and the right support 2 are more stable. In this embodiment, there are three connecting rods 3, and the number of through holes A51 in the baffle 5 matches the number of connecting rods 3.

[0029] The length of the mounting base 6 is adapted to the mounting shaft A72. The center of the end face of the mounting base 6 is provided with a transverse through hole. The left and right end faces of the mounting base 6 are respectively provided with countersunk holes 61 for mounting the bearing 13. Multiple mounting holes A63 are evenly distributed on the edge of the right end face of the mounting base 6. The mounting holes A63 are adapted to the threaded holes A52. The bearing 13 is installed in the countersunk holes 61 at both ends of the mounting base 6. The outer diameter of the bearing 13 is adapted to the countersunk holes 61. The inner diameter of the bearing 13 is adapted to the mounting shaft A72. The right end face of the mounting base 6 is used to fix the baffle 5. The center hole of the mounting base 6 is used to install the drive shaft 7, so that the drive shaft 7 can rotate freely.

[0030] The connecting flange A8 is installed on the mounting shaft B73 of the drive shaft 7; the connecting flange A8 has a mounting hole B81 at its center, and a keyway is provided on the inner wall of the mounting hole B81, which is adapted to the mounting shaft B73; the right end face of the connecting flange A8 has a through hole D82, which is connected to external equipment.

[0031] The right bracket 2 includes a baffle 5, a mounting base 6, a driven shaft 9, a bolt 11, and a nut B12; the right bracket 2 is structurally similar to and mirrors the left bracket 1; the driven shaft 9, from left to right, is provided with a flange C91, a positioning shaft B96, a mounting shaft C92, and a threaded shaft C95; the flange C91, positioning shaft B96, mounting shaft C92, and threaded shaft C95 are coaxial and form an integral structure, and are structurally similar to and mirrors the drive shaft 7; because the driven shaft 9 is not connected to external equipment, it lacks the mounting shaft B73 compared to the drive shaft 7; the installation method of the driven shaft 9 is the same as that of the drive shaft 7;

[0032] The middle part of the connecting rod 3 is a steel pipe 31, and both ends of the connecting rod 3 are respectively provided with threaded shafts A32; the threaded shafts A32 of the connecting rod 3 are respectively installed on the through holes A51 of the baffle 5; the diameter of the steel pipe 31 is larger than the diameter of the through hole C74; the steel pipe 31 and the threaded shaft A32 directly form a step to facilitate the installation of the connecting rod 3 on the baffle 5; in this embodiment, one end of the threaded shaft A32 is provided with threads, and the other end of the threaded shaft A32 is inserted into the inner hole of the steel pipe 31 for fixed installation. In actual use, other methods, such as welding, can also be used.

[0033] The usage process of this utility model is as follows: First, assemble the baffle 5, mounting base 6, drive shaft 7, connecting flange A8, bolt 11, nut B12, and bearing 13 into a left bracket 1; then assemble the baffle 5, mounting base 6, driven shaft 9, bolt 11, and nut B123 into a right bracket 2; then connect the left bracket 1 to the external equipment through the connecting flange A8; when it is necessary to test the universal joint, connect the two ends of the universal joint to the flange B71 of the drive shaft 7 and the flange C91 of the driven shaft 9 respectively; select a connecting rod 3 of appropriate length, connect the left bracket 1 and the right bracket 2 together to form a stable structure for balancing experiments; after the experiment, remove the connecting rod 3, remove the universal joint, and wait for the next experiment.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0035] The parts of this utility model not described in detail are existing technologies.

Claims

1. An auxiliary transmission universal joint dynamic balancing fixture, comprising a left support (1), a right support (2), a connecting rod (3), and a nut A (4), characterized in that: The left bracket (1) includes a baffle (5), a mounting base (6), a drive shaft (7), a connecting flange A (8), bolts (11), nuts B (12), and bearings (13); the drive shaft (7) is provided with flange B (71), positioning shaft A (76), mounting shaft A (72), threaded shaft B (75), and mounting shaft B (73) from right to left; the flange B (71), positioning shaft A (76), mounting shaft A (72), threaded shaft B (75), and mounting shaft B (73) are an integral structure. The flange B (71) has a disc on the right end and a cone on the left end; multiple through holes C (74) are evenly distributed on the right end face of the disc of flange B (71); the left end of the drive shaft (7) passes through the center hole of the baffle (5) and the mounting seat (6) and is fixed by the nut B (12); a bearing (13) is provided between the drive shaft (7) and the mounting seat (6); the baffle (5) is connected to the right end face of the mounting seat (6) by bolts (11); the connecting flange A (8) is installed on the mounting shaft B (73) of the drive shaft (7); The right bracket (2) includes a baffle (5), a mounting base (6), a driven shaft (9), a bolt (11), and a nut B (12); the right bracket (2) is similar in structure to the left bracket (1) and is arranged in a mirror image. The middle part of the connecting rod (3) is a steel pipe (31), and the two ends of the connecting rod (3) are respectively provided with threaded shafts A (32); the threaded shafts A (32) of the connecting rod (3) are respectively installed on the through hole A (51) of the baffle (5).

2. The auxiliary transmission universal joint dynamic balancing fixture according to claim 1, characterized in that: The baffle (5) is a circular flat plate. The thickness of the baffle (5) is adapted to the width of the positioning shaft A (76). The baffle (5) has a central hole at its center. The diameter of the central hole is greater than the outer diameter of the positioning shaft A (76). Multiple threaded holes A (52) are evenly distributed around the edge of the central hole of the baffle (5). Multiple through holes A (51) are evenly distributed around the edge of the outer wall of the baffle (5). The diameter of the through holes A (51) is greater than the diameter of the threaded shaft A (32).

3. The auxiliary transmission universal joint dynamic balancing fixture according to claim 2, characterized in that: The length of the mounting base (6) is adapted to the mounting shaft A (72). The center of the end face of the mounting base (6) is provided with a transverse through hole. The left and right end faces of the mounting base (6) are respectively provided with countersunk holes (61) for mounting bearings (13). Multiple mounting holes A (63) are evenly distributed on the edge of the right end face of the mounting base (6). The mounting holes A (63) are adapted to the threaded holes A (52).

4. The auxiliary transmission universal joint dynamic balancing fixture according to claim 1, characterized in that: The connecting flange A (8) has a mounting hole B (81) at its center. The inner wall of the mounting hole B (81) has a keyway. The mounting hole B (81) is adapted to the mounting shaft B (73). The right end face of the connecting flange A (8) has a through hole D (82), which is connected to external equipment.

5. The auxiliary transmission universal joint dynamic balancing fixture according to claim 1, characterized in that: The driven shaft (9) is provided with a flange C (91), a positioning shaft B (96), a mounting shaft C (92) and a threaded shaft C (95) from left to right; the flange C (91), the positioning shaft B (96), the mounting shaft C (92) and the threaded shaft C (95) are an integral structure, and the flange C (91), the positioning shaft B (96), the mounting shaft C (92) and the threaded shaft C (95) are mirror images of the structure of the driving shaft (7).

6. The auxiliary transmission universal joint dynamic balancing fixture according to claim 3, characterized in that: The bearing (13) is installed in the countersunk holes (61) at both ends of the mounting base (6). The outer diameter of the bearing (13) is adapted to the countersunk hole (61), and the inner hole of the bearing (13) is adapted to the mounting shaft A (72).

7. The auxiliary transmission universal joint dynamic balancing fixture according to claim 1, characterized in that: The diameter of the steel pipe (31) is larger than the diameter of the through hole C (74).

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