Load detection mechanism for gearbox

Abstract

The utility model relates to the technical field of gearbox detection, in particular to a load detection mechanism for a gearbox. The utility model discloses a load detection mechanism for a gear box, which comprises a rack, a detection station and a load assembly arranged on one side of the detection station are arranged on the rack, and a positioning frame is arranged at one end, close to the load assembly, of the detection station. A through hole matched with one end of a shell of the gearbox to be detected is formed in the positioning frame, the cross section of the through hole is square, and an output shaft, used for being connected with a load assembly, of the gearbox to be detected can penetrate through the through hole. And the through hole can allow a part, matched with the through hole in shape, on the gearbox shell to be detected to pass through and limit a part, larger than the through hole in shape, on the gearbox shell to be detected. The three-shaft gear box detection device has the advantages that the three-shaft gear box can be positioned and calibrated according to the shape of the three-shaft gear box so as to be detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box detection technical field, concretely is load detection mechanism for gear box. BACKGROUND

[0002] Chinese patent application no. 201711440900.8 discloses a wheelchair left and right drive wheel motor universal loading load test device, including the bottom plate, the bottom plate is provided with the magnetic powder brake, the torque sensor and the fixed plate from left to right, the drive wheel motor to be measured is placed on the fixed plate and is linked with the linkage shaft of the magnetic powder brake, the torque sensor is arranged between the drive wheel motor to be measured and the magnetic powder brake, both sides of the fixed plate are provided with the stand, the stand is fixed with the top plate, the top plate and the fixed plate are equipped with the pressing block, the top plate upside is equipped with the lifting device, the lifting device has the lifting shaft that sets up vertically, the part of the pressing block deviating from the center is fixed with the lifting shaft, the pressing block can rotate around the lifting shaft axis as the center.

[0003] In the above technical scheme, the drive wheel motor to be measured is clamped and fixed by the pressing block with V-shaped notch, and the rotating position of the pressing block is adjusted according to the specification of the drive wheel motor to be measured (such as left drive wheel motor or right drive wheel motor), so as to realize the fixation of different drive wheel motors to be measured, so that the shaft of the drive wheel motor to be measured can be coaxially arranged with the linkage shaft of the magnetic powder brake for testing. However, in the above technical scheme, due to the setting of the work station itself, interference with the three-axis gear box may occur during actual use, which prevents the three-axis gear box from being adapted, so that the rotating shaft in the three directions of the three-axis gear box cannot be positioned and calibrated, resulting in the inability to detect the transmission effect or service life of the three-axis gear box, and poor use effect. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a load detection mechanism for gear box which can position and calibrate the shape of three-axis gear box for detection.

[0005] To achieve the above object, the utility model discloses a kind of load detection mechanism for gear box, including rack, detection station is equipped on the rack and load component is equipped in the detection station one side, the detection station is equipped with positioning frame on one end close to the load component, the positioning frame is equipped with the through hole being adapted to one end of the shell of gear box to be detected, the cross section of the through hole is square and can be used for the shaft of gear box to be detected for being connected with load component, the through hole can make the part of gear box to be detected shell that shape is adapted to the shape of through hole pass through and limit the part of shape greater than the through hole, the detection station is equipped with thrust component in the direction of relatively departing load component, and the thrust component is used to make gear box to be detected move to the direction close to positioning frame and make it enter the through hole.

[0006] When needing to detect gear box to be detected, gear box to be detected is placed on detection station and is pushed into the through hole of positioning frame by thrust component, the through hole of positioning frame is used for the part of gear box shell that shape is adapted to the shape of through hole to enter, and the part of shape difference is limited, that is, gear box to be detected is clamped and fixed by thrust component and positioning frame, and then transmission effect or service life detection can be carried out.

[0007] The utility model is equipped with the through hole being adapted to one end of gear box to be detected shell, and the cross section shape of through hole is matched with gear box shell, and then the part of gear box shell that shape is adapted to the cross section of through hole enters, positioning frame is clamped in the part of gear box shell that cannot enter by cooperation of thrust component, and gear box shell is limited by the inner wall of the through hole of positioning frame, gear box shell is clamped and fixed while preventing gear box shell from toppling, the shaft of gear box is avoided from being accidentally touched, the use of gear box and detection mechanism is prevented from interfering, accurate positioning calibration of gear box to be detected is realized, the stability and accuracy of gear box in detection process are ensured, so as to improve the reliability of detection result, the utility model has the advantages of positioning calibration for the shape of three-axis gear box to carry out detection.

[0008] Among them, load component can be electrically connected with detection terminal;Load component is any one of existing load components for being connected with shaft and providing resistance for shaft, such as magnetic powder brake etc.;Thrust component is any one of existing thrust structures, and the power output end of thrust structure can reciprocate along straight line, such as electric push rod group, hydraulic push rod group etc.

[0009] As preferred, the through hole includes square hole with square cross section and circular hole being arranged at the position of four corners of the square hole.

[0010] By being equipped with circular hole at four corners, the cross section shape of through hole is adapted to mounting head on gear box for matching bolt, so as to improve the application range of the device.

[0011] Preferably, two ends of the detection station perpendicular to the moving direction of the gear box to be detected are provided with baffles for limiting the gear box to be detected.

[0012] The two baffles on the detection station form a limiting track for limiting the gear box to be detected, ensuring the path of the gear box to be detected during the pushing process by the thrust assembly, and improving the accuracy of clamping the gear box to be detected.

[0013] Preferably, a limiting groove is provided near the baffle in the detection station, the slot width of the limiting groove is matched with the connecting nut on the gear box to be detected, and the length of the limiting groove is matched with the width direction of the detection station.

[0014] The limiting groove ensures the path of the gear box to be detected during the pushing process by the thrust assembly, further improving the accuracy of clamping the gear box to be detected.

[0015] Preferably, the rack is also provided with a power assembly for providing power to the gear box to be detected, the output shaft of the power assembly is connected with the output shaft of the gear box to be detected, and the power supply to the gear box to be detected is realized.

[0016] Preferably, the output shaft of the power assembly and the output shaft of the load assembly are connected with the output shaft of the gear box to be detected through a plum blossom coupling, and the plum blossom coupling is provided to ensure that the connection between the output shaft of the gear box to be detected and the power assembly and the load assembly is coaxial, so that the power of the power assembly can be transmitted.

[0017] Preferably, the plum blossom coupling is provided with an assembly hole at both ends of the shaft center position of the output shaft of the power assembly and the output shaft of the gear box to be detected, and the plum blossom coupling is sleeved between the output shaft of the power assembly and the output shaft of the gear box to be detected through the assembly hole.

[0018] The plum blossom coupling is sleeved on the output shaft by providing an assembly hole in the plum blossom coupling, which facilitates the adaptation of the plum blossom coupling to the output shaft of the gear box to be detected of different specifications.

[0019] Preferably, the rack is also provided with a sliding assembly for moving the power assembly towards the gear box to be detected.

[0020] The relative position between the power assembly and the output shaft of the gear box to be detected is adjusted by the sliding assembly, so as to connect the output shaft of the power assembly with the output shaft of the gear box to be detected; wherein the sliding assembly is any one of the existing sliding table structures capable of supplying power to the power assembly and moving along a straight line.

[0021] The utility model discloses can prevent the interference of gear box and detection mechanism's use, realize the accurate positioning calibration to the gear box of being detected, ensure the stability and accuracy of gear box in the detection process, thereby improve the reliability of detection result, with the advantage that can be positioned calibration to the shape of three -axis gear box, to carry out the detection. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is another angle structural schematic diagram of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the gear box casing of the utility model.

[0025] In the drawing: 11, rack;12, detection station;121, limit slot;122, baffle;13, positioning frame;14, through -hole;141, square hole;142, round hole;15, magnetic powder brake;16, power assembly;17, electric push rod;171, push plate;18, connecting shaft sleeve;19, key groove;20, plum blossom coupling;21, gear box casing;22, first straight cylinder portion;23, square seat portion;231, mounting head portion;24, second straight cylinder portion;25, connecting nut. DETAILED DESCRIPTION

[0026] The utility model will be further described in the light of the drawings and specific embodiment.

[0027] As shown in Figure 1 The utility model discloses can prevent the interference of gear box and detection mechanism's use, realize the accurate positioning calibration to the gear box of being detected, ensure the stability and accuracy of gear box in the detection process, thereby improve the reliability of detection result, with the advantage that can be positioned calibration to the shape of three -axis gear box, to carry out the detection. Figure 2As shown, the through hole 14 includes a square hole 141 with a square cross section and a circular hole 142 arranged at the four corners of the square hole 141, the through hole 14 can pass the part of the gear box shell 21 to be detected which is matched with the shape of the through hole 14 and limit the part which is larger than the through hole 14, the detection station 12 is provided with a thrust assembly in the direction away from the magnetic powder brake 15, the thrust assembly is an electric push rod 17, the electric push rod 17 is used to move the gear box to be detected to the direction close to the positioning frame 13 and make it enter the through hole 14, the power output end of the electric push rod 17 is provided with a push plate 171 for reducing the pressure between the contact end surface and the gear box to be detected.

[0028] The two ends of the detection station 12 perpendicular to the moving direction of the gear box to be detected are provided with baffles 122 for limiting the gear box to be detected, a limiting groove 121 is arranged at the position close to the baffle 122 in the detection station 12, the slot width of the limiting groove 121 is matched with the connecting nut 25 on the gear box to be detected, and the length of the limiting groove 121 is matched with the width direction of the detection station 12.

[0029] The output shaft of the power assembly 16 and the output shaft of the magnetic powder brake 15 are connected with the output shaft of the gear box to be detected through the star-shaped coupling 20, so as to realize the transmission of power, the power is transmitted from the power assembly 16 to the gear box through the star-shaped coupling 20, and then the power is transmitted to the load mechanism through the output shaft of the gear box, the load mechanism is electrically connected with the detection terminal, so as to realize the load detection of the gear box.

[0030] As shown, Figure 3 As shown, a gear box using a gear box load detection mechanism, comprising a gear box shell 21, the gear box shell 21 comprises a first straight cylinder part 22 in a straight cylinder structure, a square seat part 23 located at one end of the first straight cylinder part 22 in the axial direction, and a second straight cylinder part 24 located on the circumferential surface of the first straight cylinder part 22 and perpendicular to the axis of the first straight cylinder part 22, the output shaft of the gear box extends outward from one end of the square seat part 23 away from the first straight cylinder part 22 and the axial two ends of the second straight cylinder part 24, the four corners of the square seat part 23 are provided with mounting heads 231 for providing mounting space for connecting nuts 25, the mounting heads 231 are convex structures extending outward in a circular arc shape, and the cross-sectional shape of the square seat part 23 is matched with the cross-sectional shape of the through hole 14 combined by the square hole 141 and the circular hole 142 in the positioning frame 13.

[0031] By making the square seat part 23 pass through the through hole 14 of the positioning frame 13 and enter the positioning frame 13, the first straight cylinder part 22 is hindered by the positioning frame 13 due to the different cross-sectional shapes of the first straight cylinder part 22 and the square seat part 23, so as to limit the end point of the sliding stroke of the gear box shell 21 to be detected, and limit the gear box shell 21 to be detected from the circumferential direction of the first straight cylinder part 22, thereby completing the positioning of the gear box 21 to be detected.

[0032] The shaft on the axial one end of the second straight cylinder part 24 is connected with the power assembly 16, the shaft on the square seat part 23 is connected with the magnetic powder brake 15, and the electric push rod 17 is located at the end of the first straight cylinder part 22 axially away from the square seat part 23 and is at the same height with the axial center of the first straight cylinder part 22.

[0033] The shaft on the axial one end of the second straight cylinder part 24, the shaft on the square seat part 23, the shaft of the power assembly 16 and the shaft of the magnetic powder brake 15 are all provided with the connecting shaft sleeve 18 between them and the plum blossom coupling 20, the key groove 19 is opened on the outer end surface of the connecting shaft sleeve 18, the shaft and the connecting shaft sleeve 18 are connected through the spline, the plum blossom coupling 20 and the connecting shaft sleeve 18 are connected through the flat key, the plum blossom coupling 20 is provided with the assembly hole on it for connecting with the axial center of the two ends of the shaft of the power assembly 16 and the shaft of the gear box to be detected, and the plum blossom coupling 20 is sleeved on the connecting shaft sleeve 18 through the assembly hole.

[0034] The shaft of the square seat part 23 is connected with the magnetic powder brake 15 after passing through the through hole 14 of the positioning frame 13, and the power of the power assembly 16 enters the gear box through the second straight cylinder part 24. Since the shaft axis of the second straight cylinder part 24 is perpendicular to the shaft axis of the square seat part 23, the force exerted by the power of the power assembly 16 on the gear box shell 21 will make it fall down. At this time, the electric push rod 17 and the positioning frame 13 are matched with each other, and the through hole 14 of the positioning frame 13 clamps and fixes the gear box shell 21, preventing the gear box from deviating.

[0035] When the gear box to be detected needs to be detected, the gear box to be detected is placed on the detection station 12, the square seat part 23 is opposite to the through hole 14 of the positioning frame 13, and the first straight cylinder part 22 is pushed by the electric push rod 17 to make the gear box shell 21 enter the through hole 14 of the positioning frame 13, and the shaft of the square seat part 23 is connected with the shaft of the magnetic powder brake 15 through the connecting shaft sleeve 18 and the plum blossom coupling 20. The gear box to be detected enters the through hole 14 of the positioning frame 13, the through hole 14 of the positioning frame 13 is used for the square seat part 23 to enter, and the first straight cylinder part 22 is limited, that is, the electric push rod 17 and the positioning frame 13 clamp and fix the gear box to be detected. At this time, the control sliding assembly drives the power assembly 16 to move towards the shaft on the axial one end of the second straight cylinder part 24, and the shaft of the power assembly 16 is connected with the shaft on the axial one end of the second straight cylinder part 24 through the connecting shaft sleeve 18 and the plum blossom coupling 20, that is, the loading of the gear box to be detected is completed, and the gear box to be detected can be detected for transmission effect or service life by starting the power assembly 16 and the magnetic powder brake 15.

Claims

1. A load detection mechanism for a gear box, comprising a rack, a detection station and a load assembly arranged on one side of the detection station, characterized in that: The detection station is provided with a positioning frame near one end of the load assembly, the positioning frame is provided with a through hole which is adapted to one end of the shell of the gear box to be detected, the cross section of the through hole is square and the through hole can allow the shaft of the gear box to be detected to pass through, the through hole can allow the part of the shell of the gear box to be detected which is adapted to the shape of the through hole to pass through and limit the part of the shell which is larger than the shape of the through hole, the detection station is provided with a thrust assembly in the direction away from the load assembly, the thrust assembly is used to move the gear box to be detected to the direction close to the positioning frame and make the gear box to be detected enter the through hole.

2. The load detecting mechanism for a gear box according to claim 1, characterized by: The through hole comprises a square hole with square cross section and a circular hole which is provided at the corner of the square hole.

3. The load detecting mechanism for a gear box according to claim 2, characterized by: The detection station is provided with baffles which are used to limit the gear box to be detected at the two ends of the detection station which are perpendicular to the moving direction of the gear box to be detected.

4. The load detecting mechanism for a gear box according to claim 3, characterized by: The detection station is provided with a limiting groove near the baffles, the width of the groove of the limiting groove is adapted to the connecting nut of the gear box to be detected and the length of the limiting groove is adapted to the width direction of the detection station.

5. The load detecting mechanism for a gear box according to claim 1, characterized by: The rack is further provided with a power assembly which is used to provide power for the gear box to be detected, the shaft of the power assembly is connected with the shaft of the gear box to be detected.

6. The load detecting mechanism for a gear box according to claim 5, characterized by: The shaft of the power assembly and the shaft of the load assembly are connected with the shaft of the gear box to be detected through the plum blossom coupling.

7. The load detecting mechanism for a gear box according to claim 6, characterized by: The plum blossom coupling is provided with assembling holes at the two end shaft positions of the shaft of the power assembly and the shaft of the gear box to be detected, the plum blossom coupling is sleeved between the shaft of the power assembly and the shaft of the gear box to be detected through the assembling holes.

8. The load detecting mechanism for a gear box according to claim 5, characterized by: The rack is further provided with a sliding assembly which is used to move the power assembly to the direction close to the gear box to be detected.

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