A static torsion test bench

Abstract

The invention discloses a static torque test bench, which is used for static torque test of an engine transmission shaft, wherein the transmission shaft is connected to a main shaft through a gear transmission mechanism, wherein the transmission shaft is parallel to the axis of the main shaft, and is characterized in that it comprises: a vertically arranged flat plate-shaped support frame; a vertically arranged first torque loading column and a second torque loading column; a torque loading disk fixedly mounted on the second extension portion; a tension rope and a tension sensor arranged on the tension rope. In the invention, the main shaft is fixed on the support frame, and the tension rope is pulled to apply torque to the torque loading disk. At this time, the vertical torque on the torque sensor is measured by the tension sensor. The invention has a simple structure and is easy to operate, and effectively solves the problems encountered in the prior art.

Description

Technical Field

[0001] The invention relates to a static torsion test bench. Background Art

[0002] The transmission system of an aircraft engine is composed of a horizontally arranged engine main shaft, a central driving bevel gear connected to the engine main shaft, a central driven bevel gear meshing with the central driving bevel gear, a vertically arranged uplink drive connecting shaft is installed on the central driven bevel gear, the uplink drive connecting shaft is connected to an uplink accessory, the uplink accessory includes a group of bevel gears connected to the uplink drive connecting shaft, and a transmission shaft, the transmission shaft is horizontally arranged (such as Figure 1 As shown, the transmission mechanism is simplified and only the main shaft and transmission shaft are shown).

[0003] In the prior art, it is usually necessary to perform a static torque test on the transmission shaft, that is, the driving shaft needs to be fixed, and then torque is gradually loaded on the transmission shaft to measure the current torque value. Summary of the invention

[0004] The purpose of the present invention is to provide a static torsion testing device with a simple structure.

[0005] In order to solve the above problems, the present invention provides a static torque test bench for a static torque test of an engine transmission shaft, wherein the transmission shaft is connected to the main shaft through a gear transmission mechanism, wherein the transmission shaft is parallel to the axis of the main shaft, and is characterized in that it comprises:

[0006] A vertically arranged flat plate-shaped support frame, which is provided with a first mounting hole for inserting the main shaft, and a second mounting hole for inserting the transmission shaft, the main shaft is fixed to the support frame by a first fixing device, the first fixing device can limit the rotational freedom of the main shaft, the transmission shaft is rotatably connected in the second mounting hole through a rolling bearing, and the transmission shaft is provided with a second extension portion extending from the second mounting hole;

[0007] A first torsion loading column and a second torsion loading column are vertically arranged, wherein the first torsion loading column and the second torsion loading column are located on both sides of the second extension portion;

[0008] A torsion loading disc fixedly mounted on the second extension portion, the torsion loading disc being a round pancake-shaped structure, with at least one circle of placement grooves provided on its circumferential surface, and a through hole passing through the center of the torsion loading disc and penetrating the entire placement groove;

[0009] A tension rope, the starting end of which is fixed on the first torque loading column, is wound into the placement slot from above, passes through the through hole and then wound out from below the placement slot, and finally passes through a third mounting hole provided on the second torque loading column, and a force loaded on the torque loading disk is generated by pulling the tension rope extending out of the third mounting hole;

[0010] A tension sensor is arranged on the tension rope, and the tension sensor is located between the first torque loading column and the upper winding point of the tension rope.

[0011] As a further improvement of the present invention, a tension bolt is provided at the free end of the tension rope, and the tension bolt can be inserted into the third mounting hole. The shape matching between the tension bolt and the third mounting hole can limit the rotation of the tension bolt relative to the third mounting hole, and the tension bolt is provided with an adjusting nut threadedly connected to it.

[0012] As a further improvement of the present invention, the cross-sections of the third mounting hole and the tension bolt are both irregular circles, which are composed of a plane and an arc surface.

[0013] As a further improvement of the present invention, the bottom of the support frame is also provided with a horizontally arranged base plate and two triangular support plates with a right-angled triangle cross-section. The support frame is inserted in the middle position of the base plate. Mounting grooves for inserting two right-angled planes of the triangular support plates are provided under the support frame and on the upper surface of the base plate. The triangular support plates are fixed to the support frame by fasteners respectively.

[0014] As a further improvement of the present invention, it also includes a flange fixedly mounted on the main shaft, the flange is fixed to the support frame by the first fixing device, the first fixing device includes two semicircular fixing block sleeves and a positioning ring, wherein:

[0015] The two semicircular fixing blocks are located between the flange and the support frame, and the semicircular fixing blocks are fixed to the support frame through fasteners after covering the main shaft;

[0016] The positioning ring is located between the flange and the semicircular fixing block sleeve, and the positioning ring is fixed to the semicircular fixing block sleeve through a fastener after being sleeved on the flange;

[0017] After the semicircular fixing block sleeve and the positioning ring are fixed, the flange is fixed to the semicircular fixing block sleeve by fasteners.

[0018] As a further improvement of the present invention, a flat-plate mounting seat is installed at the bottom of each of the first torsion loading column and the second torsion loading column. The mounting seat has an L-shaped notch for the base plate to be inserted. The mounting seat is fixed on the mounting plane by fasteners.

[0019] The beneficial effect of the present invention is that, in the present invention, the main shaft is fixed on the support frame, and the torque is applied to the torque loading disk by pulling the tension rope. At this time, the value on the torque sensor is measured by the tension sensor. The present invention has a simple structure and is easy to operate, and effectively solves the problems encountered in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the structure of the present invention, in which the transmission mechanism is simplified and only the main shaft and the transmission shaft are shown;

[0021] Figure 2 is a sectional view of a side view of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the torque loading disc, the tension rope, the tension screw and the adjusting nut in the present invention;

[0023] Figure 4 is a cross-sectional view of the torsion loading disc of the present invention;

[0024] Figure 5 is a side view of the first torsion loading column or the second torsion loading column;

[0025] In the figure: 1-transmission shaft; 102-second extension; 2-support frame; 202-first mounting hole; 204-second mounting hole; 3-main shaft; 302-flange; 304-semicircular fixing block sleeve; 306-positioning ring; 4-first torque loading column; 402-mounting seat; 5-rolling bearing; 6-second torque loading column; 8-torque loading plate; 802-placement groove; 804-through hole; 10-tension rope; 1002-third mounting hole; 1004-tension bolt; 1006-adjusting nut; 12-tension sensor; 14-base plate; 16-triangular support plate. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0027] like Figure 1-5 As shown, the present invention includes:

[0028] A vertically arranged flat plate-shaped support frame 2 is provided with a first mounting hole 202 for inserting the main shaft 3, and a second mounting hole 204 for inserting the transmission shaft 1. The main shaft 3 is fixed to the support frame 2 by a first fixing device, and the first fixing device can limit the rotational freedom of the main shaft 3. The transmission shaft 1 is rotatably connected in the second mounting hole 204 through a rolling bearing 5. The transmission shaft 1 is provided with a second extension portion 102 extending from the second mounting hole 204;

[0029] A first torsion loading column 4 and a second torsion loading column 6 are vertically arranged, wherein the first torsion loading column 4 and the second torsion loading column 6 are located on both sides of the second extension portion 102;

[0030] A torque loading disc 8 fixedly mounted on the second extension 102, the torque loading disc 8 being a round pancake-shaped structure, with at least one circle of placement grooves 802 provided on its circumferential surface, and a through hole 804 passing through the center of the torque loading disc 8 and penetrating the entire placement groove 802;

[0031] The tension rope 10, whose starting end is fixed on the first torque loading column 4, is wound into the placement slot 802 from above, passes through the through hole 804, and then is wound out from the bottom of the placement slot 802, and finally passes through the third mounting hole 1002 set in the second torque loading column 6, and the force loaded on the torque loading disk 8 is generated by pulling the tension rope 10 extending out of the third mounting hole 1002;

[0032] A tension sensor 12 is arranged on the tension rope 10 , and the tension sensor 12 is located between the first torque loading column 4 and the upper winding point of the tension rope 10 .

[0033] As a further improvement of the present invention, a tension bolt 1004 is provided at the free end of the tension rope 10, and the tension bolt 1004 can be inserted into the third mounting hole 1002. The shape matching between the tension bolt 1004 and the third mounting hole 1002 can limit the rotation of the tension bolt 1004 relative to the third mounting hole 1002, and the tension bolt 1004 is provided with an adjusting nut 1006 threadedly connected thereto.

[0034] As a further improvement of the present invention, the cross-sections of the third mounting hole 1002 and the tension bolt 1004 are both irregular circles, which are composed of a plane and an arc surface.

[0035] As a further improvement of the present invention, a horizontally arranged bottom plate 14 and two triangular support plates 16 with a right-angled triangle cross-section are also provided at the bottom of the support frame 2. The support frame 2 is inserted in the middle position of the bottom plate 14. Two mounting grooves for inserting two right-angled planes of the triangular support plates 16 are provided under the support frame 2 and on the upper surface of the bottom plate 14. The triangular support plates 16 are fixed to the support frame 2 by fasteners respectively.

[0036] As a further improvement of the present invention, it also includes a flange 302 fixedly mounted on the main shaft 3, and the flange 302 is fixed to the support frame 2 by the first fixing device, and the first fixing device includes two semicircular fixing block sleeves 304 and a positioning ring 306, wherein:

[0037] The two semicircular fixing block sleeves 304 are located between the flange 302 and the support frame 2. After the semicircular fixing block sleeves the main shaft 3, it is fixed to the support frame 2 through fasteners;

[0038] The positioning ring 306 is located between the flange 302 and the semicircular fixing block sleeve. After the positioning ring 306 is sleeved on the flange 302, it is fixed to the semicircular fixing block sleeve through fasteners.

[0039] After the semicircular fixing block sleeve and the positioning ring 306 are fixed, the flange 302 is fixed to the semicircular fixing block sleeve by fasteners.

[0040] As a further improvement of the present invention, a flat-plate mounting seat 402 is respectively installed at the bottom of the first torsion loading column 4 and the second torsion loading column 6. The mounting seat 402 has an L-shaped notch, which is used for the base plate 14 to be inserted. The mounting seat 402 is fixed on the mounting plane by fasteners.

[0041] The specific principles of the present invention are as follows:

[0042] (1) The main shaft 3 of the present invention is provided with a non-detachable flange 302, which is fixed to the support frame 2 by a first fixing device, and two semicircular fixing blocks 304 are sleeved on the main shaft 3 and fixed to the support frame 2 by bolts, and a positioning ring 306 is sleeved on the flange of the main shaft 3 and fixed to the semicircular fixing block sleeve by bolts, and finally the flange of the main shaft 3 is fixed to the semicircular fixing block sleeve by bolts. The reason for fixing the positioning ring 306 first and then the flange 302 of the main shaft 3 in the assembly process is to avoid the central axis from being deformed by bending moment when installing the bolts;

[0043] (2) The transmission shaft 1 is installed with the rolling ball bearing through the mounting hole of the support frame 2, and the rolling bearing 5 is fixed to the support frame 2 and the transmission shaft 1;

[0044] (3) One end of the torque loading disk 8 is fixed to the free end of the transmission shaft 1. The torque loading disk 8 is a perforated metal disk. The starting end of the tension rope 10 is fixed on the first torque loading column 4, and is wound into the placement groove 802 of the torque loading disk 8 from above, passes through the through hole 804 on the torque loading disk 8, and then winds out from the bottom of the placement groove 802. The other end of the tension rope 10 is fixed with a tension bolt 1004, and the tension bolt 1004 passes through the third mounting hole 1002 and is connected to the adjustment nut 1006 on the outside of the first torque loading column 4. The tension rope 10 is provided with a tension sensor 12 between its starting end and the torque loading disk 8. When the tension rope 10 is pulled, the movement of the tension rope 10 will apply torque to the torque loading disk 8, and the torque can be read by the tension sensor 12.

[0045] (4) The movement of the tension rope 10 is achieved by rotating the adjusting nut 1006. Because the tension bolt 1006 and the third mounting hole 1002 are both irregular circular hole structures, when the adjusting nut 1006 rotates, the tension bolt 1004 cannot rotate in the third mounting hole 1002 and can only move linearly along its axis, thereby pulling the tension rope 10. The movement of the tension rope 10 will apply torque to the torque loading disk 8. In the present invention, Figure 4 As shown, it should be ensured that the axis of the through hole 804 forms an inclination angle with the longitudinal center line of the torsion loading plate 8. Such installation can ensure that the tension on both sides is tangent to the torsion loading plate 8 during the test, thereby reducing the test error.

[0046] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A static torque test bench for a static torque test of an engine transmission shaft (1), wherein the transmission shaft (1) is connected to a main shaft (3) via a gear transmission mechanism, wherein: The transmission shaft (1) is parallel to the axis of the main shaft (3), and is characterized by comprising: A vertically arranged flat plate-shaped support frame (2), provided with a first mounting hole (202) for inserting the main shaft (3), and a second mounting hole (204) for inserting the transmission shaft (1), the main shaft (3) being fixed to the support frame (2) by a first fixing device, the first fixing device being capable of limiting the rotational freedom of the main shaft (3), the transmission shaft (1) being rotationally connected in the second mounting hole (204) via a rolling bearing (5), the transmission shaft (1) being provided with a second extension portion (102) extending out of the second mounting hole (204); A first torsion loading column (4) and a second torsion loading column (6) are arranged vertically, wherein the first torsion loading column (4) and the second torsion loading column (6) are located on both sides of the second extension portion (102); a torque loading disc (8) fixedly mounted on the second extension portion (102), the torque loading disc (8) being a round pancake-shaped structure, with at least one circle of placement grooves (802) provided on its circumferential surface, the placement groove (802) being provided with a through hole (804) passing through the center of the torque loading disc (8) and penetrating the entire placement groove (802); A tension rope (10), the starting end of which is fixed on the first torque loading column (4), is wound into the placement slot (802) from above, passes through the through hole (804), and then is wound out from the bottom of the placement slot (802), and finally passes through the third mounting hole (1002) provided on the second torque loading column (6), and a force is generated on the torque loading disk (8) by pulling the tension rope (10) extending out of the third mounting hole (1002); A tension sensor (12) is arranged on the tension rope (10), and the tension sensor (12) is located between the first torque loading column (4) and the upper winding point of the tension rope (10).

2. A static torsion test bench according to claim 1, characterized in that: The free end of the tension rope (10) is provided with a tension bolt (1004), and the tension bolt (1004) can be inserted into the third mounting hole (1002). The shape of the tension bolt (1004) and the third mounting hole (1002) can limit the rotation of the tension bolt (1004) relative to the third mounting hole (1002), and the tension bolt (1004) is provided with an adjusting nut (1006) threadedly connected thereto.

3. A static torsion test bench according to claim 2, characterized in that: The cross-sections of the third mounting hole (1002) and the tension bolt (1004) are both irregular circles, which are composed of a flat surface and an arc surface.

4. A static torsion test bench according to claim 3, characterized in that: The bottom of the support frame (2) is also provided with a horizontally arranged bottom plate (14) and two triangular support plates (16) with a right-angled triangle cross section; the support frame (2) is inserted into the middle position of the bottom plate (14); and mounting grooves for inserting two right-angled planes of the triangular support plates (16) are provided below the support frame (2) and on the upper surface of the bottom plate (14); the triangular support plates (16) are fixed to the support frame (2) by fasteners.

5. A static torsion test bench according to claim 4, characterized in that: It also includes a flange (302) fixedly mounted on the main shaft (3), the flange (302) being fixed to the support frame (2) by the first fixing device, the first fixing device including two semicircular fixing block sleeves (304) and a positioning ring (306), wherein: The two semicircular fixing block sleeves (304) are located between the flange (302) and the support frame (2); the semicircular fixing block sleeves (304) are fixed to the support frame (2) via fasteners after they are sleeved over the main shaft (3); The positioning ring (306) is located between the flange (302) and the semicircular fixing block sleeve (304); after the positioning ring (306) is sleeved on the flange (302), it is fixed to the semicircular fixing block sleeve (304) via a fastener; After the semicircular fixing block sleeve (304) and the positioning ring (306) are fixed, the flange (302) is fixed to the semicircular fixing block sleeve (304) via fasteners.

6. A static torsion test bench according to claim 5, characterized in that: A flat plate-shaped mounting seat (402) is respectively installed at the bottom of the first torsion loading column (4) and the second torsion loading column (6); the mounting seat (402) has an L-shaped notch for snapping into the base plate (14); and the mounting seat (402) is fixed on the mounting plane by a fastener.

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