Device for testing low-temperature starting performance of speed reducer

Abstract

The utility model discloses a low-temperature starting performance testing device for a speed reducer, the speed reducer is arranged on a speed reducer mounting seat, a slide rail assembly is arranged in a low-temperature box, the speed reducer mounting seat can slide, and an output shaft of a starting motor is connected with the speed reducer through a quick connecting assembly; the quick connecting assembly comprises a connecting shaft, a limiting cylinder, a spline cylinder and a coupling piece, the connecting shaft is provided with an outer connecting end, a supporting shaft, a threaded shaft and a first spline shaft which are integrally formed, a limiting convex ring is arranged at the lower end of the limiting cylinder in a protruding mode, the spline cylinder is slidably arranged on the limiting cylinder in a sleeving mode and clamped on the limiting convex ring, and a spline hole is formed in the lower middle portion of the spline cylinder; the upper end of the spline hole is inserted into the first spline shaft, and the lower end is inserted into the second spline shaft at the upper end of the coupling piece; a positioning hole is formed in the mounting table surface of the speed reducer mounting seat, the axis of the positioning hole is positioned on the central axis of the connecting shaft, and the coupling piece is positioned in the positioning hole; the testing device is simple in structure and high in operability, the speed reducer is fast and convenient to machine and install and easy to center and position, and the testing efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of speed reducer detection, specifically refers to a kind of speed reducer low temperature starting performance testing device. BACKGROUND

[0002] Speed reducer often works in low temperature environment, and low temperature has great influence on the viscosity of lubricating grease and transmission error, and the starting torque of speed reducer in low temperature environment generally increases, and the motor matched by conventional test configuration cannot guarantee the effective starting of equipment in low temperature environment, therefore, it is particularly important to test the starting torque of speed reducer in low temperature environment;

[0003] Considering the influence of low temperature on motor driving performance, the starting torque of speed reducer cannot be truly fed back, and speed reducer and starting motor are arranged inside and outside low temperature box respectively, therefore, the connection difficulty of speed reducer and starting motor increases, the low temperature test equipment of prior art has simple structure design, and still cannot solve the installation and connection problems of speed reducer in low temperature box, installation is complex, coaxial precision cannot be guaranteed, test efficiency is low, and reliability is insufficient;In addition, to reduce the influence of low temperature conduction on starting motor, the temperature of output shaft of starting motor needs to be controlled in normal temperature zone. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of prior art, and provides a kind of speed reducer low temperature starting performance testing device to solve one or more problems proposed in the above background art.

[0005] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A kind of speed reducer low temperature starting performance testing device, including low temperature box, speed reducer is installed on speed reducer mounting seat, sliding rail assembly for the retraction of speed reducer mounting seat is arranged in low temperature box, speed reducer mounting seat can slide between installation position outside low temperature box and test position in low temperature box, starting motor is located above outside low temperature box, and its output shaft is connected to speed reducer on test position by quick connection assembly;

[0007] Quick connection assembly includes connecting shaft, limiting cylinder, spline cylinder and shaft coupling, connecting shaft has integrally formed outer connecting end, support shaft, threaded shaft and first spline shaft, support shaft is connected to low temperature box by bearing, limiting cylinder is arranged on threaded shaft, and limiting bead is arranged on the lower end of limiting cylinder, spline cylinder upper end clamping hole can be slidably sleeved on limiting cylinder, and is clamped on limiting bead, spline cylinder middle and lower part is spline hole, spline hole upper end is inserted with first spline shaft, and lower end is inserted with second spline shaft on the upper end of shaft coupling;

[0008] The mounting table of the mounting seat of the speed reducer is provided with a positioning hole, when the mounting seat of the speed reducer is located at the test position, the axis of the positioning hole is located on the axis of the connecting shaft, the positioning shaft of the connecting piece is inserted into the positioning hole, the expansion ring of the speed reducer locks the expansion shaft at the lower end of the connecting piece, the mounting table is provided with a plurality of long circular adjusting holes, after the speed reducer is connected and positioned with the connecting piece, the position is fixed and locked through the adjusting holes and the speed reducer mounting seat is connected.

[0009] Further, a positioning mechanism is further included, a limiting clamping circle is arranged on the connecting piece and located between the second spline shaft and the positioning shaft, the limiting clamping circle is located outside the positioning hole, the peripheral surface of the limiting clamping circle is formed with a limiting plane through vertical axis milling, the positioning mechanism includes a positioning column, a positioning spring and a positioning block, the positioning column is fixedly arranged on the mounting table, the positioning spring is sleeved on the positioning column, and the lower end of the positioning spring is elastically pressed on the positioning block, the positioning block is in a cam structure, the positioning block is integrally formed with a base circle and a positioning profile, the positioning profile is transitionally connected with the peripheral surface of the base circle, the base circle is rotatably sleeved on the positioning column, and when the positioning profile is in abutment with the limiting plane, the slot of the second spline shaft is aligned with the key position of the spline hole.

[0010] Further, the output shaft of the starting motor is connected with the outer connecting end of the connecting shaft through a motor flange, the outer connecting end is a connecting flange, and a heat insulation plate is clamped between the motor flange and the connecting flange.

[0011] Further, the starting motor is installed on the top of the low-temperature box through a motor fixing seat, the motor fixing seat is provided with a cooling passage, and the motor flange is located in the cooling passage.

[0012] Further, cooling fans are arranged on both sides of the cooling passage, and a temperature detection ring is arranged on the motor flange, the temperature detection ring feeds back a temperature detection signal to the cooling fans.

[0013] Further, the mounting seat of the speed reducer is integrally formed with a support plate located directly below the mounting table, for initially supporting the lower end surface of the speed reducer, and the support plate is provided with a support groove in the middle, for allowing the output shaft of the speed reducer to pass through.

[0014] Compared with the prior art, the speed reducer low-temperature starting performance test device has the following beneficial effects:

[0015] The testing device installs the speed reducer through the pullable speed reducer mounting seat, the installation of the speed reducer can be operated outside the box in a more friendly manner, the centering positioning and transmission connection of the speed reducer are realized through the quick connection structure, the coupling is used as an intermediate connecting piece, the speed reducer can be centered and adjusted outside the low temperature box, after the centering positioning and locking of the speed reducer are completed, the spline sleeve is manually slid upward, after the low temperature box is pushed into position, the spline sleeve is slid downward, the coupling and the connecting shaft are quickly engaged, the rotating center of the starting motor and the speed reducer are coincided, and the transmission precision is improved; the testing device has simple structure and strong operability, the speed reducer is quickly and conveniently mounted and installed, the centering positioning is easy, and the testing efficiency is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure perspective view of the testing device of the utility model;

[0017] Figure 2 It is an exploded view of partial structure of the testing device of the utility model;

[0018] Figure 3 It is a sectional view of the testing device of the utility model;

[0019] Figure 4 It is a perspective view of the testing device of the utility model when located in the installation position.

[0020] In the drawing: 1, starting motor; 2, motor fixed seat; 21, cooling channel; 3, motor flange; 4, quick connection assembly; 41, connecting flange; 42, limiting cylinder; 43, first spline shaft; 44, spline cylinder; 44a, clamping hole; 44b, adjusting sliding hole; 44c, spline hole; 5, low temperature box; 6, speed reducer mounting seat; 61, supporting plate; 62, adjusting hole; 7, speed reducer; 8, positioning mechanism; 81, positioning column; 82, positioning spring; 83, positioning block; 9, coupling; 91, second spline shaft; 92, limiting clamping circle; 93, tensioning shaft; 10, heat insulation plate. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only the best embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] The embodiment provides a speed reducer low temperature starting performance testing device, as shown in the accompanying drawings, Figures 1-4As shown, the system includes a low-temperature chamber 5, a reducer mounting base 6, and a quick-connect assembly 4. The low-temperature chamber 5 has a door, and the chamber contains corresponding refrigeration components. The reducer 7 is mounted on the reducer mounting base 6, and it can be pulled out of the chamber via the reducer mounting base 6 for easy external installation. The low-temperature chamber 5 has a slide rail assembly for connecting the reducer mounting base 6 on its side or bottom. The slide rail assembly can be a guide rail or a pull rod, etc. When the reducer mounting base 6 is in the external installation position, an auxiliary platform can be configured outside the low-temperature chamber 5 to provide auxiliary support for the outer end of the reducer mounting base 6 in order to improve its support strength. The reducer mounting base 6 is pushed to the inner stop point of the chamber, reaches the test position, and is elastically locked. In order to lock the reducer mounting base 6 in the test position, one end of the reducer mounting base 6 is abutted against the inner side of the chamber through a rubber pad, and the other end is elastically abutted against the inner side of the chamber door.

[0023] The reducer mounting base 6 is integrally formed with a mounting platform and a support plate 61. The input end of the reducer 7 is a tensioning ring, and the output end is a keyway shaft. After the reducer 7 is centered, positioned, and tensioned, the mounting platform is bolted and locked. In order to facilitate the centering and positioning operation, a support groove extending from the upper end to the test position is opened in the middle of the support plate 61. The output end face of the reducer 7 is attached to the support plate 61 for support.

[0024] The output shaft of the starter motor 1 is connected to the reducer 7 on the test position via quick-connect assembly 4. To accommodate quick-connect assembly 4, the starter motor 1 and reducer 7 are arranged vertically. Since the starting torque test is a low-speed condition, the self-locking force provided by gravity can meet the locking requirements.

[0025] Quick Connect Component 4 provides for rapid alignment and connection within the box, and its structure is as follows: Figure 2 and Figure 3 As shown, the assembly includes a connecting shaft, a limiting sleeve 42, a splined sleeve 44, and a coupling 9. The connecting shaft passes through the cryogenic chamber 5 and includes an integrally formed outer connecting end, a support shaft, a threaded shaft, and a first splined shaft 43. The outer connecting end is a connecting flange 41. The top of the cryogenic chamber 5 is provided with an installation groove, in which a flat bearing and a sealing ring are installed. The connecting flange 41 abuts against the flat bearing. After the support shaft passes through the shaft hole of the flat bearing, it is sealed by the sealing ring. A limiting ring is provided at the lower end of the limiting sleeve 42. The splined sleeve 44 is provided with a snap-fit ​​hole 44a, an adjustment hole 44a, and an adjustment hole 44a from top to bottom. The sliding hole 44b and spline hole 44c, and the snap-fit ​​hole 44a are slidably sleeved on the limiting cylinder 42 and snapped on the limiting convex ring. The limiting convex ring is guided to slide by the adjusting sliding hole 44b. After the limiting cylinder 42 and the spline cylinder 44 are sleeved and assembled, the limiting cylinder 42 is threaded onto the threaded shaft. The internal spline of the spline hole 44c meshes with the external spline of the first spline shaft 43. The extension length of the spline cylinder 44 at the lower end of the first spline shaft 43 is adjusted. The upper end of the spline hole 44c is inserted into the first spline shaft 43, and the lower end is inserted into the second spline shaft 91 at the upper end of the coupling 9.

[0026] The shaft coupling 9 is used for positioning the reducer 7 outside the box, which includes a second spline shaft 91, a limiting card circle 92, a positioning shaft and a tensioning shaft 93 from top to bottom, the positioning hole of the reducer mounting seat 6 is in sliding fit with the positioning shaft, of course, a bearing can also be arranged in the positioning hole to assist positioning, reduce the relative rotation friction force, when the reducer mounting seat 6 is in the test position, the positioning hole is located directly below the connecting shaft and coaxial, when the reducer 7 is installed, the reducer 7 is slid to the positioning hole below the installation table surface through the support plate 61, the positioning shaft of the shaft coupling 9 is inserted into the positioning hole, the tensioning shaft 93 at the lower end of the positioning shaft extends into the tensioning ring of the reducer 7, the tensioning ring is tightened to lock the tensioning shaft 93, the reducer 7 is automatically centered and positioned, the bolt assembly passes through the adjusting hole 62 to connect the reducer 7 below the installation table surface, the bolt assembly is tightened, the input end surface of the reducer 7 is attached to the lower surface of the installation table surface, the positioning and fixed installation of the reducer 7 are completed;

[0027] In the positioning process of the reducer 7, the positioning of the key position on the second spline shaft 91 should also be included, the key position is positioned by the positioning mechanism 8, the limiting card circle 92 extends out of the positioning hole, the peripheral surface thereof is milled perpendicular to the axis to form a limiting plane, the positioning mechanism 8 is used to limit the direction of the limiting plane at the accurate key position, and the accurate key position is again referred to Figure 4 The positioning mechanism 8 includes a positioning column 81, a positioning spring 82 and a positioning block 83, the positioning column 81 is fixedly arranged on the installation table surface, the positioning spring 82 is sleeved on the positioning column 81, and the lower end thereof is elastically pressed on the positioning block 83, the positioning block 83 has a cam structure, and a base circle and a positioning profile are integrally formed on the positioning block 83, the positioning profile is transitionally connected to the peripheral surface of the base circle, the base circle is rotatably sleeved on the positioning column 81, therefore, the positioning block 83 can be selectively in a limiting state and a non-limiting state by sliding and rotating, in the non-limiting state, the positioning block 83 gives way to the limiting card circle 92 to avoid affecting the rotation thereof, in the limiting state, the positioning profile is attached to the limiting plane, at this time, the groove position of the second spline shaft 91 is aligned with the key position of the spline hole 44c, and the tensioning shaft 93 is tensioned and locked at the accurate key position.

[0028] As a further technical solution, in order to solve the influence of heat conduction on the performance of the starting motor 1, I, a heat insulation plate 10 is arranged, the output shaft of the starting motor 1 is fixedly connected to the motor flange 3, and the heat insulation plate 10 is arranged between the motor flange 3 and the connecting flange 41 to reduce the heat conduction between the quick connecting piece and the motor flange 3;

[0029] II, a cooling passage 21 is arranged, the starting motor 1 is installed by the motor fixing seat 2 arranged on the top of the low-temperature box 5, the motor fixing seat 2 and the top surface of the low-temperature box 5 have the cooling passage 21, the motor flange 3 is exposed in the cooling passage 21 and is in a room temperature environment;

[0030] III. Increase liquidity to improve cooling efficiency, through temperature detection ring monitoring motor flange 3 real-time temperature, when the temperature is lower than room temperature 5℃ or so, cooling fan start cooling, until the motor flange 3 return to room temperature, if the motor flange 3 temperature continues to decrease, should check the sealing ring sealing failure.

[0031] The orientation words such as "outer", "inner", "upper", "lower", "end", "side" and the like mentioned in the present document are based on the orientation or positional relationship shown in the related drawings. Figures 1-4 These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0032] In addition, in addition to being used to represent the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the terms "upper", "inner" and the like may also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the utility model can be understood according to the specific situation.

[0033] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for testing the low temperature starting performance of a speed reducer, comprising a low temperature chamber, characterized in that: The speed reducer is installed on a speed reducer mounting seat, a slide rail assembly for the speed reducer mounting seat to slide is arranged in the low temperature box, the speed reducer mounting seat can slide between a mounting position outside the low temperature box and a test position in the low temperature box, a starting motor is arranged above the low temperature box, and an output shaft of the starting motor is connected to the speed reducer on the test position through a quick connection assembly; The quick connection assembly comprises a connecting shaft, a limiting cylinder, a spline cylinder and a shaft coupling, the connecting shaft is integrally formed with an outer connecting end, a supporting shaft, a threaded shaft and a first spline shaft, the supporting shaft is connected to the low temperature box through a bearing, the limiting cylinder is arranged on the threaded shaft, a lower end of the limiting cylinder is provided with a limiting protruding ring, an upper end of the spline cylinder is slidably sleeved on the limiting cylinder and is clamped on the limiting protruding ring, a spline hole is formed in a middle and lower part of the spline cylinder, an upper end of the spline hole is inserted with the first spline shaft, and a lower end of the spline hole is inserted with a second spline shaft of the shaft coupling; A positioning hole is arranged on a mounting table of the speed reducer mounting seat, when the speed reducer mounting seat is located at the test position, an axis of the positioning hole is located on a middle axis of the connecting shaft, a positioning shaft of the shaft coupling is inserted into the positioning hole, and a tension ring of the speed reducer is locked to a tension shaft at a lower end of the shaft coupling, the mounting table is provided with a plurality of long circular adjusting holes, after the speed reducer is connected and positioned with the shaft coupling, the adjusting holes are used for fixing and locking positions and connecting the speed reducer mounting seat.

2. The reduced speed machine low temperature start performance test device of claim 1, wherein: A positioning mechanism is further arranged, a limiting clamping circle is arranged on the shaft coupling and located between the second spline shaft and the positioning shaft, the limiting clamping circle is located outside the positioning hole, a circumferential surface of the limiting clamping circle is milled to form a limiting plane through a vertical axis, the positioning mechanism comprises a positioning column, a positioning spring and a positioning block, the positioning column is fixedly arranged on the mounting table, the positioning spring is sleeved on the positioning column, a lower end of the positioning spring is elastically pressed on the positioning block, the positioning block is in a cam structure, the positioning block is integrally formed with a base circle and a positioning profile, the positioning profile is transitionally connected to a circumferential surface of the base circle, the base circle is rotatably sleeved on the positioning column, and when the positioning profile is attached to the limiting plane, a groove of the second spline shaft is aligned with a spline of the spline hole.

3. The reduced speed machine low temperature start performance test apparatus of claim 1 or 2, wherein: An output shaft of the starting motor is connected to the outer connecting end of the connecting shaft through a motor flange, the outer connecting end is a connecting flange, and a heat insulation plate is clamped between the motor flange and the connecting flange.

4. The reduced speed machine low temperature start performance test device of claim 3, wherein: The starting motor is installed on a top of the low temperature box through a motor fixing seat, the motor fixing seat is provided with a cooling passage, and the motor flange is located in the cooling passage.

5. The reduced speed machine low temperature start performance test device of claim 4, wherein: Cooling fans are arranged on both sides of the cooling passage, a temperature detection ring is arranged on the motor flange, and the temperature detection ring feeds back a temperature detection signal to the cooling fans.

6. The reduced speed machine low temperature start performance test device of claim 1, wherein: The speed reducer mounting seat is integrally formed with a supporting plate located directly below the mounting table, the supporting plate is used for initially supporting a lower end surface of the speed reducer, and a supporting groove is formed in a middle part of the supporting plate and used for giving a space for the output shaft of the speed reducer.

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