CN109632296B - Suspension type hollow rail gear box type test comprehensive test bed - Google Patents
Suspension type hollow rail gear box type test comprehensive test bed Download PDFInfo
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- CN109632296B CN109632296B CN201910106467.7A CN201910106467A CN109632296B CN 109632296 B CN109632296 B CN 109632296B CN 201910106467 A CN201910106467 A CN 201910106467A CN 109632296 B CN109632296 B CN 109632296B
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- 239000000725 suspension Substances 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000009661 fatigue test Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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Abstract
The invention discloses a suspension type air rail gear box type test comprehensive test bed which comprises a test platform, a driving motor and a loading motor, wherein the driving motor and the loading motor are both arranged on the test platform, a main test gear box and a test accompanying gear box are arranged on the test platform, a horizontal series group formed by the driving motor and the test accompanying gear box is parallel to a horizontal series group formed by the loading motor and the main test gear box, the main test gear box and the test accompanying gear box are connected with the corresponding motors in series by adopting the same end, the other ends of the main test gear box and the test accompanying gear box are coaxially connected through a coupler vertical to the series group, and the coupler is obliquely arranged relative to a horizontal plane; the test platform is provided with a steering force applying mechanism, a vertical force applying mechanism and a traction braking force applying mechanism respectively. The problem that the test bed is difficult to arrange due to the fact that the input shaft of the main test gear box has a certain elevation angle is solved, and the test process is closer to reality due to the fact that the force is checked in the gear fatigue test.
Description
Technical Field
The invention belongs to the technical field of suspended type empty rail gearbox tests, and particularly relates to a suspended type empty rail gearbox type test comprehensive test bed.
Background
An air rail train (called an air rail for short) is a suspension type monorail traffic system, a rail of the air rail train is arranged above the train and is supported in the air by steel or cement upright posts, and the suspension type air rail can relieve urban traffic problems on the basis that the existing highway facilities of a city do not need to be expanded. For subway and light rail, suspension type empty rail has following characteristics: 1. the construction cost is lowest, the engineering is simple, and the engineering is fastest; 2. the occupied area is small, and the original building on the ground is not influenced; 3. the influence on the environment is minimal during construction; 4. the detachable wire-changing and the extension are easy.
The suspended type empty rail gearbox must be subjected to a type test before formal loading test operation, and suspended type empty rail is an emerging field in China, so the suspended type empty rail gearbox type test has not been performed in China. The difficulty of the suspension type air rail gearbox type test is mainly that: 1. the input shaft of the gear box has a certain elevation angle, and the rack is difficult to arrange; 2. due to the special installation form requirement of the suspended type hollow rail gearbox, vertical force, traction braking force, steering force and the like are required to be applied to corresponding parts of the shell in the test operation process, so that all parameters of the whole actual operation are checked.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a suspension type air rail gearbox type test comprehensive test bed capable of carrying out type test on a suspension type air rail gearbox.
The technical scheme adopted by the invention is as follows: the utility model provides a suspension type empty rail gear box type test comprehensive test bed, includes test platform, driving motor and loading motor all set up on test platform be provided with main test gear box and accompany test gear box on the test platform, main test gear box and accompany test gear box are unsettled to be installed on test platform through main test gear box support and accompany test gear box support respectively, accompany test gear box passes through driving motor drive, main test gear box provides the load through loading motor, the horizontal series group that driving motor and accompany test gear box constitute is parallel with the horizontal series group that loading motor and main test gear box constitute, main test gear box and accompany test gear box adopt same one end to establish ties with each corresponding motor, and their other end is through the coaxial continuous of shaft coupling that is perpendicular to series group, and shaft coupling relative horizontal plane slope arrangement;
The test platform is provided with a steering force applying mechanism for respectively providing a steering load for the main test gear box, a vertical force applying mechanism for providing a vertical load and a traction braking force applying mechanism for providing a traction braking force load, and the steering force applying mechanism, the vertical force applying mechanism and the traction braking force applying mechanism are all arranged around the main test gear box.
Preferably, the main test gear box and the accompanying test gear box are the same in type. By adopting the structure, the power of the main test gear box is the same as that of the accompanying test gear box, so that the fact that the accompanying test gear box is not matched with the main test gear box and the test data are inaccurate is avoided.
Preferably, a transmission is arranged between the accompanying test gear box and the driving motor, and between the main test gear box and the loading motor. With the adoption of the structure, the speed changer can adjust the rotation speed and the torque output by the driving motor and the loading motor to the rotation speed and the torque required by the test and respectively transmit the rotation speed and the torque to the accompanying test gear box and the main test gear box.
Preferably, the steering force applying mechanism comprises a height adjusting device and a connecting device, the height adjusting device comprises a fixed seat, an adjusting arm, an upper connecting rod and a lower connecting rod, the adjusting arm vertically extends and the lower end of the adjusting arm can be arranged on the fixed seat in a left-right rotating mode, the upper connecting rod and the lower connecting rod are respectively hinged to the upper end and the middle of the adjusting arm, the upper connecting rod and the lower connecting rod are horizontally extended and are respectively positioned on the left side and the right side of the adjusting arm, a steering force sensor is arranged between the lower connecting rod and the connecting device, one end, far away from the steering force sensor, of the connecting device is fixedly arranged on a box body of the main test gearbox, and the upper connecting rod provides steering load for the main test gearbox through the height adjusting device and the connecting device under the driving of power. By adopting the structure, the overlong loading arm is easy to generate bending deformation when the steering load is provided, the overlong loading arm is not adopted to provide the steering load for the main test gear box through the height adjusting device, and meanwhile, the upper connecting rod, the lower connecting rod, the adjusting arm and the fixing seat are all hinged, and the rotation of the adjusting arm can be ignored in the force application process, so that the application direction of the steering force can be kept unchanged when the steering force load is provided.
Preferably, the connecting device comprises a suspension connecting rod which is suspended and horizontally arranged, one end of the suspension connecting rod is connected with the steering force sensor, the other end of the suspension connecting rod is hinged to one side of the suspension, and one side of the suspension, which is far away from the suspension connecting rod, is fixedly arranged on the rear side of the main test gear box body. By adopting the structure, the test data is more accurate by simulating the application mode of the steering force when the main test gear box is used on a real vehicle.
Preferably, the vertical force applying mechanism comprises a base, a base connecting rod, a U-shaped frame connecting rod and a U-shaped connecting frame which are sequentially arranged from bottom to top, wherein the lower end of the base connecting rod is hinged to the base, a vertical force sensor is arranged between the base connecting rod and the U-shaped frame connecting rod, the U-shaped connecting frame comprises a connecting block which is horizontally arranged and two connecting arms which vertically extend, the upper end of the U-shaped frame connecting rod is connected with the center thread of the connecting block, a nut is sleeved on the U-shaped frame connecting rod, the upper end face of the nut is in butt joint with the lower end face of the connecting block, the upper ends of the two connecting arms are respectively fixed on the front side and the rear side of an output shaft bearing seat, and a gap is reserved between the lower end of the output shaft bearing seat and the connecting block. By adopting the structure, the nut is rotated upwards, the U-shaped frame connecting rod can generate downward tension to the U-shaped connecting frame, and the vertical force is applied by adopting the mode of the top thread, so that the mode is simple and easy to realize.
Preferably, the middle part of the connecting block is provided with a downward bulge. By adopting the structure, the strength of the middle part of the connecting block is enhanced, so that the connection between the U-shaped frame connecting rod and the U-shaped connecting frame is more stable and reliable.
Preferably, the traction braking force applying mechanism comprises a balance arm connecting rod, a balance arm and two loading arms, wherein the balance arm connecting rod, the balance arm and the two loading arms are horizontally arranged, the balance arm connecting rod is hinged to the middle of the balance arm, the two loading arms are respectively hinged to the left end and the right end of the balance arm, the loading arms and the balance arm connecting rod are respectively located on the front side and the rear side of the balance arm, loading arm hinging seats are respectively arranged on two output shaft bearing seats of the main test gear box, one ends, far away from the balance arm, of the two loading arms are respectively hinged to the two loading arm hinging seats, and the balance arm connecting rod is driven by power to provide traction load for the main test gear box through the balance arm and the two loading arms. The balance arm is adopted to enable the two stress points to be stressed simultaneously, and the stress is the same, so that the force application mode is closer to the use state of the main test gear box on the real vehicle, and the hinge mode is adopted among the balance arm connecting rod, the two loading arms and the balance arm and among the two loading arms and the main test gear box, so that the force application direction is not changed in the traction braking force application process.
Preferably, the power device of the balance arm connecting rod is a horizontal cylinder, and a traction braking force sensor is connected between a piston rod of the horizontal cylinder and one end of the balance arm connecting rod, which is far away from the balance arm. By adopting the structure, the traction braking force load is provided through the horizontal cylinder, so that the structure is stable and reliable and is easy to realize.
Preferably, a temperature sensing device is arranged at a position of the main test gear box body close to the output shaft bearing. Because of the special requirements of the railway gearbox, the temperature of the critical position of the gearbox shell needs to be monitored while the oil temperature is monitored, and therefore, the shell temperature of the main test gearbox in the type test is monitored and recorded in real time by adopting the structure.
The beneficial effects of the invention are as follows: the test bench is characterized in that the test bench is provided with a vertical force applying mechanism, a steering force applying mechanism and a traction braking force applying mechanism, wherein the vertical force applying mechanism is used for applying a steering load, the traction braking force and the steering force to the main test gear box respectively.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a schematic structural view of a steering force applying mechanism;
FIG. 5 is a schematic structural view of a vertical force applying mechanism and a tractive braking force applying mechanism;
Fig. 6 is a front view of the vertical force applying mechanism and the traction braking force applying mechanism.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
As shown in fig. 1 to 6, a suspension type hollow rail gear box type test comprehensive test bed is composed of a test bed 101, a driving motor 102, a loading motor 103, a main test gear box 104, a test accompanying gear box 105, a transmission 107, a gear box bracket 108, a test accompanying gear box bracket 109, a steering force applying mechanism 200, a vertical force applying mechanism 300 and a traction braking force applying mechanism 400, wherein the main test gear box 104 is used as a main test piece, the installation mode is consistent with that of the main test gear box 104 in actual operation, the main test gear box 104 is suspended on the test bed 101 through the main test gear box bracket 108, the test accompanying gear box 105 is used as a test accompanying piece, the test accompanying gear box 105 is suspended on the test bed 101 through the test accompanying gear box bracket 109, the driving motor 102 and the loading motor 103 are both arranged on the test bed 101, the test accompanying gear box 105 is driven through the driving motor 102, the main test gear box 104 provides load through the loading motor 103, the horizontal series group formed by the driving motor 102 and the accompanying gear box 105 is parallel to the horizontal series group formed by the loading motor 103 and the main gear box 104, the driving motor 102 and the loading motor 103 are positioned on the same side of the accompanying gear box 105 and the main gear box 104, the main gear box 104 and the accompanying gear box 105 are connected with the corresponding motors in series by adopting the same end, the other ends of the driving motor 102 and the accompanying gear box 105 are coaxially connected through a coupler vertical to the series group, and the coupler is arranged in an inclined way relative to the horizontal plane, in the embodiment, the main gear box 104 and the accompanying gear box 105 are in the same type, the input shafts of the main gear box 104 and the accompanying gear box 105 are connected through the coupler, the rotation center line of the coupler is overlapped with the input shaft of the main gear box 104 and the input shaft center line of the accompanying gear box 105, the output shafts of the driving motor 103 and the driving motor 102 are respectively connected, the mode of connecting the accompanying test gear box 105 and the main test gear box 104 in series can overcome the problem that the input shaft of the main test gear box 104 has a certain elevation angle, so that the rack arrangement is difficult, and meanwhile, the performance of the main test gear box 104 can be improved, the service life of the main test gear box 104 is prolonged, the driving motor 102 and the loading motor 103 can be replaced, the adjustment range of test parameters such as rotating speed, torque and the like in the test process is larger, and the test result is more comprehensive; in the present embodiment, a transmission 107 is provided between the accompanying test gear box 105 and the drive motor 102, and between the main test gear box 104 and the loading motor 103. A steering force applying mechanism 200, a vertical force applying mechanism 300, and a traction braking force applying mechanism 400 that respectively supply a steering load, a vertical load, and a traction braking force load to the main test gear box 104 are provided on the test bed 101.
As shown in fig. 1 to 3, the main test gearbox 104 is mounted on the test platform 101 through a main test gearbox bracket 108, the main test gearbox bracket 108 is disposed on one side, far away from the accompanying test gearbox 105, of the test platform 101, the main test gearbox bracket 108 comprises a bottom plate 108a and a supporting arm 108b, the supporting arm 108b is composed of mounting plates disposed on the bottom plate 108a at left and right intervals, adjacent mounting plates are connected through a transverse plate, the supporting arm 108b extends upwards and then bends towards a direction close to the accompanying test gearbox 105, mounting lugs 108c are respectively disposed on a vertical section and a bending section of the supporting arm 108b, and a box body of the main test gearbox 104 is fixedly mounted on the upper main test gearbox bracket 108 through the mounting lugs 108 c.
As shown in fig. 1 to 3, the test accompanying gear box 105 is mounted on the test platform 101 through a test accompanying gear box bracket 109, the test accompanying gear box bracket 109 is a door-shaped frame surrounded by a transverse plate 109a and two longitudinal beams 109b, the transverse plate 109a extends to a side close to the main test gear box 104, a downward mounting part 109c is arranged on the extending section, the mounting part 109c comprises a door-shaped fixing frame 109d fixedly mounted on the transverse plate 109a, the lower ends of two support plates of the door-shaped fixing frame 109d are respectively provided with a collar 109e, bearing seats are arranged in the two collars 109e, and the left end and the right end of an output shaft of the test accompanying gear box 105 are respectively worn in the two bearing seats. In this embodiment, the reinforcing ribs 109f having a mesh structure are provided on the upper side of the cross plate 109 a.
As shown in fig. 1 to 4, the steering force applying mechanism 200 includes a height adjusting device 210 and a connecting device 220, the height adjusting device 210 includes a fixing base 211, an adjusting arm 212, an upper connecting rod 213 and a lower connecting rod 214, the upper connecting rod 213 and the lower connecting rod 214 are respectively hinged at the upper end and the middle part of the adjusting arm 212, the upper connecting rod 213 and the lower connecting rod 214 are respectively horizontally extended and respectively positioned at the left and right sides of the adjusting arm 212, a steering force sensor 230 is arranged between the lower connecting rod 214 and the connecting device 220, and one end of the connecting device 220, which is far away from the steering force sensor 230, is fixedly mounted on the box body of the main test gearbox 104; in this embodiment, two bearing seats 215 are provided on the fixing seat 211, the two bearing seats 215 are oppositely arranged in front and back, a supporting shaft 216 is rotatably provided between the two bearing seats 215, bearings are respectively provided between the supporting shaft 216 and the two bearing seats 215, the lower end of the adjusting arm 212 is sleeved on the supporting shaft 216 in a manner of being capable of rotating left and right, the mounting structure of the adjusting arm 212 is stable and reliable, and the range of the steering force which can be borne is large; the adjusting arm 212 comprises two adjusting plates 212a which are oppositely arranged front and back, the lower ends of the two adjusting plates 212a are provided with through holes for the supporting shafts 216 to pass through, an upper hinge shaft 212b and a lower hinge shaft 212c are arranged between the two adjusting plates 212a, the upper hinge shaft 212b and the lower hinge shaft 212c are respectively positioned at the upper ends and the middle parts of the two adjusting plates 212a, and an upper connecting rod 213 and a lower connecting rod 214 are respectively hinged on the adjusting arm 212 through the upper hinge shaft 212b and the lower hinge shaft 212c, so that the adjusting arm 212 is higher in strength and more stable and reliable in structure, and meanwhile, the upper connecting rod 213, the lower connecting rod 214 and the adjusting arm 212 are firmly connected and are easy to realize; the connecting device 220 comprises a suspension 221 and a horizontally arranged suspension connecting rod 222, one end of the suspension connecting rod 222 is connected with the steering force sensor 230, the other end of the suspension connecting rod 222 is hinged to one side of the suspension 221, one side of the suspension 221 away from the suspension connecting rod 222 is fixedly arranged on the rear side of the main test gear box 104, and by adopting the structure, the application mode of the steering force applying mechanism is more similar to the steering force stress mode of the main test gear box 104 in actual operation, so that test data are more accurate; the power device of the upper connecting rod 213 is a horizontal cylinder 240, the horizontal cylinder 240 is installed on the test platform 101 through a bracket, one end of the upper connecting rod 213 is hinged with the upper end of the adjusting arm 212, the other end of the upper connecting rod 213 is hinged with a piston rod of the horizontal cylinder 240 through a cylinder connector, the piston rod of the horizontal cylinder 240 is positioned on the same horizontal plane with the upper connecting rod 213, the horizontal cylinder 240 is used as a power device for applying steering force, the cost is low, the control is easy in the process of applying steering force, and the upper connecting rod 213 provides steering load for the main test gearbox 104 through the height adjusting device 210 and the connecting device 220 under the driving of the horizontal cylinder 240. In this embodiment, the lower link 214 and the suspension link 222 are all knuckle bearings, the upper link 213 includes two knuckle bearings connected together by a knuckle bearing connector, and the bearing ends of the two knuckle bearings of the upper link 213 are hinged to the cylinder connectors at the end portions of the piston rods of the adjusting arm 212 and the horizontal cylinder 240, respectively.
As shown in fig. 5 and 6, the vertical force applying mechanism 300 includes a base 310, a base connecting rod 320, a U-shaped frame connecting rod 340 and a U-shaped connecting frame 350 sequentially disposed from bottom to top, the lower end of the base connecting rod 320 is hinged on the base 310, a vertical force sensor 330 is disposed between the base connecting rod 320 and the U-shaped frame connecting rod 340, the U-shaped connecting frame 350 includes a connecting block 350a disposed horizontally and two connecting arms 350b extending vertically, a downward protrusion is disposed in the middle of the connecting block 350a, the U-shaped frame connecting rod 340 is a screw, the upper end of the U-shaped frame connecting rod 340 is connected with the center thread of the connecting block 350a, a nut 360 is sleeved on the U-shaped frame connecting rod 340, the upper end of the nut 360 is abutted to the lower end of the connecting block 350a, the upper ends of the two connecting arms 350b are respectively fixed on the front and rear sides of the output shaft bearing seat 106, and a gap is provided between the lower end of the output shaft bearing seat 106 and the connecting block 350 a.
As shown in fig. 5 and 6, the traction braking force applying mechanism 400 includes a balance arm connecting rod 410, a balance arm 420 and two loading arms 430, which are all horizontally arranged, the balance arm connecting rod 410 is hinged with the middle part of the balance arm 420, the two loading arms 430 are respectively hinged with the left and right ends of the balance arm 420, the loading arms 430 and the balance arm connecting rod 410 are respectively positioned at the front and rear sides of the balance arm 420, loading arm hinge seats 440 are respectively arranged on the two output shaft bearing seats 106 of the main test gear box 104, one ends of the two loading arms 430, which are far away from the balance arm 420, are respectively hinged with the two loading arm hinge seats 440, and the balance arm connecting rod 410 is driven by power to provide traction load for the main test gear box 104 through the balance arm 420 and the two loading arms 430. In this embodiment, the power device of the balance arm connecting rod 410 is a horizontal cylinder 450, and a traction braking force sensor 460 is connected between a piston rod of the horizontal cylinder 450 and one end of the balance arm connecting rod 410 away from the balance arm 420. A temperature sensing device is disposed at a position of the main test gear box 104, where the box body is close to the output shaft bearing, and the temperature sensing device may be a temperature sensor, in this embodiment, a manner of sticking a thermocouple at a critical position close to the output shaft bearing is adopted to monitor and record the temperature of the main test gear box 104 in real time.
Claims (7)
1. The utility model provides a suspension type empty rail gear box type test combined test platform, includes test platform (101), driving motor (102) and loading motor (103) all set up on test platform (101), its characterized in that: the test platform (101) is provided with a main test gear box (104) and a test accompanying gear box (105), the main test gear box (104) and the test accompanying gear box (105) are respectively connected with the corresponding motors in series through a main test gear box bracket (108) and a test accompanying gear box bracket (109) in a suspending manner, the test accompanying gear box (105) is driven by a driving motor (102), the main test gear box (104) provides a load through a loading motor (103), a horizontal series group formed by the driving motor (102) and the test accompanying gear box (105) is parallel to a horizontal series group formed by the loading motor (103) and the main test gear box (104), the main test gear box (104) and the test accompanying gear box (105) are connected with the corresponding motors in series through the same ends, the other ends of the main test gear box and the test accompanying gear box are coaxially connected through a coupling vertical to the series group, and the coupling is arranged obliquely relative to the horizontal plane;
a steering force applying mechanism (200) for respectively providing a steering load for the main test gear box (104), a vertical force applying mechanism (300) for providing a vertical load and a traction braking force applying mechanism (400) for providing a traction braking force load are arranged on the test platform (101), and the steering force applying mechanism (200), the vertical force applying mechanism (300) and the traction braking force applying mechanism (400) are all arranged around the main test gear box (104);
The steering force applying mechanism (200) comprises a height adjusting device (210) and a connecting device (220), the height adjusting device (210) comprises a fixed seat (211), an adjusting arm (212), an upper connecting rod (213) and a lower connecting rod (214), the adjusting arm (212) vertically extends, the lower end of the adjusting arm (212) can be arranged on the fixed seat (211) in a left-right rotating manner, the upper connecting rod (213) and the lower connecting rod (214) are respectively hinged at the upper end and the middle part of the adjusting arm (212), the upper connecting rod (213) and the lower connecting rod (214) horizontally extend and are respectively positioned at the left side and the right side of the adjusting arm (212), a steering force sensor (230) is arranged between the lower connecting rod (214) and the connecting device (220), one end of the connecting device (220) far away from the steering force sensor (230) is fixedly arranged on a box body of the main test gearbox (104), and the upper connecting rod (213) is driven by power to provide steering load for the main test gearbox (104) through the height adjusting device (210) and the connecting device (220);
The vertical force applying mechanism (300) comprises a base (310), a base connecting rod (320), a U-shaped frame connecting rod (340) and a U-shaped connecting frame (350) which are sequentially arranged from bottom to top, wherein the lower end of the base connecting rod (320) is hinged to the base (310) through a rotating shaft, a vertical force sensor (330) is arranged between the base connecting rod (320) and the U-shaped frame connecting rod (340), the U-shaped connecting frame (350) comprises a connecting block (350 a) which is horizontally arranged and two connecting arms (350 b) which vertically extend, the upper end of the U-shaped frame connecting rod (340) is in threaded connection with the center of the connecting block (350 a), a nut (360) is sleeved on the U-shaped frame connecting rod (340), the upper end face of the nut (360) is in butt joint with the lower end face of the connecting block (350 a), and the upper ends of the two connecting arms (350 b) are respectively fixed on the front side and the rear side of an output shaft bearing seat (106), and a gap is reserved between the lower end of the output shaft bearing seat (106) and the connecting block (350 a);
The traction braking force applying mechanism (400) comprises a balance arm connecting rod (410), a balance arm (420) and two loading arms (430) which are horizontally arranged, wherein the balance arm connecting rod (410) is hinged to the middle of the balance arm (420), the two loading arms (430) are respectively hinged to the left end and the right end of the balance arm (420), the loading arms (430) and the balance arm connecting rod (410) are respectively located on the front side and the rear side of the balance arm (420), loading arm hinging seats (440) are respectively arranged on two output shaft bearing seats (106) of the main test gearbox (104), one ends, far away from the balance arm (420), of the two loading arms (430) are respectively hinged to the two loading arm hinging seats (440), and the balance arm connecting rod (410) is driven by power to provide traction loads for the main test gearbox (104) through the balance arm (420) and the two loading arms (430).
2. The suspended hollow rail gearbox type test rig according to claim 1, wherein: the main test gear box (104) and the accompanying test gear box (105) are the same in type.
3. The suspended hollow rail gearbox type test rig according to claim 1, wherein: a transmission (107) is arranged between the accompanying test gear box (105) and the driving motor (102) and between the main test gear box (104) and the loading motor (103).
4. The suspended hollow rail gearbox type test rig according to claim 1, wherein: the connecting device (220) comprises a suspension (221) and a horizontally arranged suspension connecting rod (222), one end of the suspension connecting rod (222) is connected with the steering force sensor (230), the other end of the suspension connecting rod is hinged to one side of the suspension (221), and one side, away from the suspension connecting rod (222), of the suspension (221) is fixedly arranged on the rear side of the main test gearbox (104).
5. The suspended hollow rail gearbox type test rig according to claim 1, wherein: the middle part of the connecting block (350 a) is provided with a downward bulge.
6. The suspended hollow rail gearbox type test rig according to claim 1, wherein: the power device of the balance arm connecting rod (410) is a horizontal cylinder (450), and a traction braking force sensor (460) is connected between a piston rod of the horizontal cylinder (450) and one end of the balance arm connecting rod (410) far away from the balance arm (420).
7. The suspended hollow rail gearbox type test rig according to claim 1, wherein: and a temperature sensing device is arranged at the position, close to the output shaft bearing, of the main test gear box (104).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910106467.7A CN109632296B (en) | 2019-02-02 | 2019-02-02 | Suspension type hollow rail gear box type test comprehensive test bed |
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| CN201910106467.7A CN109632296B (en) | 2019-02-02 | 2019-02-02 | Suspension type hollow rail gear box type test comprehensive test bed |
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| CN109632296B true CN109632296B (en) | 2024-04-30 |
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| CN110455529A (en) * | 2019-09-12 | 2019-11-15 | 河北工业大学 | A kind of Power close type gear test stand |
| CN113074936B (en) * | 2021-03-19 | 2022-09-30 | 重庆凯瑞传动技术有限公司 | Take gear box of axletree to dispatch from factory test device |
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