Testing device for speed reducer

Abstract

The invention relates to the technical field of speed reducer detection, in particular to a speed reducer testing device which comprises a bearing platform, a shaking mechanism, an auxiliary mechanism, a power device fixed on the bearing platform, a speed reducer, a torque sensor and a load, the power device, the speed reducer, the torque sensor and the load are fixedly connected in sequence, and the shaking mechanism comprises a support. The upper surface of the support and the lower surface of the swing plate are in spherical hinge joint. The swing mechanism further comprises a driving piece driving the swing plate to swing back and forth around a spherical hinge. Static torque detection of the speed reducer in a horizontal state and an inclined state is carried out through the shaking mechanism, and periodic rolling and pitching of the speed reducer caused by the influence of sea waves can be simulated. The static torque of the speed reducer in the vertical state is detected through cooperation of the shaking mechanism and the auxiliary mechanism, the situation that the speed reducer shakes under the influence of sea waves and is affected by seawater erosion can be simulated, and the use scene of the speed reducer of offshore platform equipment is simulated from multiple aspects, so that the torque detection result is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reducer testing, in particular to a testing device for a reducer. BACKGROUND

[0002] Before leaving the factory, reducers need to be tested for various performances to determine whether the reducers are qualified, wherein torque detection includes rated torque, peak torque, torque fluctuation rate, no-load torque and load efficiency. In most cases, reducers are installed horizontally, at which time lubricating oil can evenly cover the moving parts such as gears and bearings through gravity to form an effective oil film. At present, the horizontal angle is mainly used in torque detection.

[0003] However, in practice, the reducers used by offshore platform equipment are not only affected by wave impact, but also corroded by seawater. In addition, the installation angle of the reducer also has the cases of inclined installation and vertical installation in actual use, such as the reducers used by crane slewing mechanisms, inclined conveyor drive devices, vertical mixing equipment and vertical elevators. At this time, due to the change of the installation angle, the lubrication condition changes, the lubricating oil level in the reducer installed obliquely is inclined, which causes the oil pool to gather on the lower side of the shell, resulting in uneven lubrication of the gears and bearings. The gears of the reducer installed vertically are partially submerged in the oil pool and partially exposed, which makes it difficult to be fully lubricated, resulting in an increase in the friction coefficient of the gears and affecting the peak torque that the reducer can withstand.

[0004] Therefore, when only the horizontal angle is used for torque detection, the detection result of the peak torque of the reducer installed vertically or obliquely will have errors. In addition, when the horizontal static torque is detected, the influence of the sway of the offshore platform and the corrosion of the seawater on the reducer is ignored, which makes the error of the maximum torque detected larger. SUMMARY

[0005] The present application provides a testing device for a reducer, which solves the problem that the maximum torque of the reducer used by offshore platform equipment cannot be accurately measured by the conventional horizontal static detection of the torque of the reducer in the related art.

[0006] The present application provides a testing device for a reducer, which solves the problem that the maximum torque of the reducer used by offshore platform equipment cannot be accurately measured by the conventional horizontal static detection of the torque of the reducer in the related art. The present application provides a testing device for a reducer, which solves the problem that the maximum torque of the reducer used by offshore platform equipment cannot be accurately measured by the conventional horizontal static detection of the torque of the reducer in the related art.

[0007] The shaking mechanism comprises a support, a ball hinge connecting between the upper surface of the support and the lower surface of the swing plate, and a driving member driving the swing plate to swing back and forth around the ball hinge.

[0008] The auxiliary mechanism comprises a bottom plate fixedly arranged at the bottom of the support, a moving plate vertically arranged on the bottom plate, a lifting member fixedly arranged on the moving plate, and an environment simulation box detachably arranged on the lifting member, and a nozzle penetrating into the environment simulation box is fixedly arranged on the transparent cover of the environment simulation box.

[0009] The static torque of the speed reducer in horizontal state and inclined state is detected by the shaking mechanism, and periodic rolling and pitching of the speed reducer affected by sea waves can be simulated; the static torque of the speed reducer in vertical state is detected by the shaking mechanism and the auxiliary mechanism, and the shaking of the speed reducer affected by sea waves and the influence of seawater erosion can be simulated.

[0010] In a possible implementation, the upper surface of the swing plate is fixedly arranged with a rotating shaft, the rotating plate is sleeved on the rotating shaft, the upper surface of the swing plate is arranged with a ring-shaped groove coaxial with the rotating shaft, a plurality of circumferentially distributed fixing blocks are fixedly arranged in the ring-shaped groove, the lower surface of the rotating plate is fixedly arranged with a plurality of circumferentially distributed sliding blocks, the sliding blocks are slidingly arranged in the ring-shaped groove, and the sliding blocks and the corresponding fixing blocks are connected by elastic extension rods.

[0011] In a possible implementation, the rotation of the rotating plate is completed by cooperation of a rotating plate fixedly arranged at the edge of the rotating plate and an externally rotating cam, and the inner and outer annular surfaces and the bottom surface of the sliding block are embedded with rolling balls, and the rolling balls are in rolling contact with the inner wall and the bottom wall of the ring-shaped groove.

[0012] In a possible implementation, the driving member comprises swing rods rotatably arranged on the upper surface of the support through mounting seats, and the front surface of each swing rod is arranged with a strip-shaped through hole at the left end and the right end, a penetrating rod is slidingly arranged in each strip-shaped through hole, and the two penetrating rods corresponding in front and back are connected by a concave frame, the lower surface of the concave frame is fixedly arranged with a hydraulic push rod, the upper surface of each swing rod is fixedly arranged with a vertical column at the left end and the right end, and the upper surface of the vertical column is in contact with the lower surface of the swing plate.

[0013] In a possible implementation, the upper surface of the bottom plate is arranged with a plurality of positioning holes uniformly distributed from left to right, and the bottom of the moving plate is fixedly arranged with a positioning pin inserted into the positioning hole.

[0014] In a possible implementation, the environment simulation box is provided with an avoiding slot corresponding to the input shaft and the output shaft of the speed reducer, the nozzle is communicated with the salt water storage box through an external pipeline, and when the salt mist sprayed by the nozzle drops to the bottom of the environment simulation box, the salt mist is discharged from the gap in the edge of the upper surface of the rotating plate and collected into the external salt water storage box.

[0015] In a possible implementation, when the lifting member drives the environment simulation box to move downward to the upper surface of the rotating plate, the environment simulation box is fixed to the upper surface of the rotating plate through the microstructure physical adsorption glue.

[0016] In a possible implementation, when the moving plate changes from the vertical state to the horizontal state, the speed reducer test device is turned over by 90 degrees, and the lower surface of the moving plate is provided with a plurality of support plates, so that the moving plate is in a stable horizontal state.

[0017] The one or more technical solutions in the embodiments of the present application have at least one of the following technical effects: 1. The present application can detect the static torque of the speed reducer in the horizontal state and the inclined state through the shaking mechanism, and can simulate the periodic rolling and pitching of the speed reducer caused by the sea waves; the static torque of the speed reducer in the vertical state can be detected through the cooperation of the shaking mechanism and the auxiliary mechanism, and the shaking of the speed reducer caused by the sea waves and the influence of seawater erosion can be simulated, so that the use scene of the speed reducer of the offshore platform device is simulated from multiple aspects, so that the torque detection result is more accurate.

[0018] 2. The present application has simple structure, lower cost, more accurate detection result and strong applicability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view of the speed reducer test device provided by the embodiments of the present application.

[0020] Figure 2 is a perspective view of the speed reducer test device provided by the embodiments of the present application.

[0021] Figure 3 is an exploded view (partly cut) of the supporting platform provided by the embodiments of the present application.

[0022] Figure 4 is Figure 3 the enlarged view of the A area in FIG.

[0023] Figure 5 is another perspective view of the speed reducer test device provided by the embodiments of the present application.

[0024] Figure 6 is a plan view of the speed reducer test device provided by the embodiments of the present application after being turned over by 90 degrees.

[0025] In the figure: 1, support platform; 11, swing plate; 12, rotating plate; 13, annular groove; 14, sliding block; 15, elastic telescopic rod; 16, fixed block; 17, push plate; 2, power equipment; 3, speed reducer; 4, torque sensor; 5, load; 6, shaking mechanism; 61, support; 62, spherical hinge; 63, swing rod; 64, strip-shaped through hole; 65, through rod; 66, concave frame; 67, hydraulic push rod; 7, auxiliary mechanism; 71, bottom plate; 72, moving plate; 73, lifting piece; 74, environmental simulation box; 75, nozzle. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific details set forth below, and similar improvements can be made by those skilled in the art without departing from the spirit and scope of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0027] Referring to Figure 1 and Figure 2 A test device for a speed reducer includes a support platform 1, a power equipment 2, a speed reducer 3, a torque sensor 4 and a load 5 fixed on the support platform 1, an output shaft of the power equipment 2 is connected with an input shaft of the speed reducer 3 through a shaft coupling, an output shaft of the speed reducer 3 is connected with an input shaft of the torque sensor 4 through a shaft coupling, and an output shaft of the torque sensor 4 is fixedly connected with an input shaft of the load 5 through a shaft coupling; the peak torque of the speed reducer 3 is detected through the torque sensor 4.

[0028] Referring to Figure 3 and Figure 4The supporting platform 1 comprises a swing plate 11 and a rotating plate 12 rotatably installed on the top of the swing plate 11, the power equipment 2, the speed reducer 3, the torque sensor 4 and the load 5 are all fixed on the upper surface of the rotating plate 12, the upper surface of the swing plate 11 is fixed with a rotating shaft, the rotating plate 12 is rotatably sleeved on the rotating shaft, the upper surface of the swing plate 11 is provided with an annular groove 13 coaxial with the rotating shaft, a plurality of circumferentially distributed fixing blocks 16 are fixed in the annular groove 13, a plurality of circumferentially distributed sliding blocks 14 are fixed on the lower surface of the rotating plate 12 corresponding to the position of the annular groove 13, the sliding blocks 14 are slidably arranged in the annular groove 13, and the inner and outer annular surfaces and the bottom surface of the sliding blocks 14 are all embedded with rolling balls, the rolling balls are in rolling contact with the inner wall and the bottom wall of the annular groove 13, the sliding blocks 14 and the corresponding fixing blocks 16 are connected through elastic extension rods 15, the elastic extension rods 15 are in arc-shaped structure, when the rotating plate 12 rotates around the rotating shaft, the sliding blocks 14 will be synchronously moved along the annular groove 13, and the corresponding elastic extension rods 15 are gradually compressed, when the external force applied on the rotating plate 12 is removed, the sliding blocks 14 are reset under the elastic force of the elastic extension rods 15.

[0029] It should be noted that the rotation of the rotating plate 12 is completed by the cooperation of the rotating cam and the actuating plate 17 fixed on the edge of the rotating plate 12, when the external cam rotates, the actuating plate 17 is pushed away, so that the actuating plate 17 drives the rotating plate 12 to rotate, when the cam is separated from the actuating plate 17, the elastic extension rods 15 rapidly drive the sliding blocks 14 and the rotating plate 12 to reset, the setting of the rolling balls reduces the friction between the sliding blocks 14 and the annular groove 13, through the continuous rotation of the cam, the rotating plate 12 and the structures on the rotating plate 12 are reciprocatingly rotated, and the periodic rolling of the offshore platform equipment affected by the sea waves is simulated.

[0030] If it is needed to change the angle of rotation of the rotating plate 12, the contact time of the cam and the actuating plate 17 can be changed, specifically, the position of the cam can be adjusted to prolong or shorten the time of pushing the actuating plate 17.

[0031] Please refer to Figure 1 , Figure 2 and Figure 5, the swing plate 11 is provided with a swing mechanism 6 below, the swing mechanism 6 includes support 61, and the support 61 and the swing plate 11 are connected through the ball hinge 62, the ball hinge 62 is composed of a ball head pin and a ball seat, the swing mechanism 6 further includes the driving piece that drives the swing plate 11 to swing back and forth around the ball hinge 62;Driving piece includes swing rod 63, strip-shaped through hole 64, through rod 65, concave bracket 66 and hydraulic push rod 67 and stand;The upper surface of the support 61 is rotatably connected with the swing rod 63 on the both sides of front and back through the mounting seat, the front side of the swing rod 63 is provided with strip-shaped through hole 64 on the both ends, each strip-shaped through hole 64 is slidably installed with through rod 65, and the corresponding two through rods 65 are connected through the concave bracket 66, the lower surface of the concave bracket 66 is fixedly installed with the hydraulic push rod 67, and the upper surface of the swing rod 63 is fixedly installed with the stand on the both ends, and the upper surface of the stand is in contact with the lower surface of the swing plate 11.

[0032] Affected by sea waves, offshore platform equipment will not only periodically roll, but also pitch, when the two hydraulic push rods 67 extend by the same distance, the swing rod 63 remains horizontal, at this time, the supporting platform 1 as a whole remains horizontal, and the static torque under the horizontal angle can be detected, when one of the hydraulic push rods 67 is elongated and the other is shortened, under the action of the principle of lever, the swing rod 63 rotates, and the fixed strip-shaped through hole 64 also rotates accordingly, and the swing plate 11 is correspondingly pushed to rotate around the ball hinge 62, so as to simulate that the offshore platform equipment will not only periodically pitch, wherein the ball head pin at the lower end of the swing plate 11 can rotate 180 degrees horizontally in the ball seat, when simulating the periodic pitching of the offshore platform, the swing plate 11 is manually rotated by a certain angle in the horizontal direction, so that the contact position of the stand and the lower surface of the swing plate 11 can be changed, not only the swing plate 11 can swing in the left-right direction, but also in the front-back direction or other diagonal directions, when the longitudinal swing direction changes, the position of the cam used to push the push plate 17 also changes, so that the cam can contact and push the push plate 17 after the swing plate 11 rotates in the horizontal direction.

[0033] When it is necessary to detect the maximum torque of the reducer 3 installed at an angle, the two hydraulic push rods 67 no longer adjust back and forth when the extension distance is determined, so that the angle between the swing plate 11 and the ground is fixed, and the angle between the swing plate 11 and the ground can be monitored by the inclination sensor.

[0034] Please refer to Figure 1 、 Figure 2 And Figure 6The reducer testing device further comprises an auxiliary mechanism 7, which comprises a bottom plate 71 fixedly arranged at the bottom of the hydraulic push rod 67 and the support 61, a moving plate 72 vertically arranged on the bottom plate 71, a lifting piece 73 fixedly arranged on the moving plate 72, and an environment simulation box 74 detachably arranged on the lifting piece 73.

[0035] The lifting piece 73 comprises two ear plates arranged above and below the moving plate 72 and a motor fixedly arranged on the upper ear plate, the output shaft of the motor is fixedly connected with a lead screw, a guide rod is further arranged between the two ear plates, a lifting block is threadedly connected with the lead screw and slidably connected with the guide rod, and the lifting block is detachably connected with the environment simulation box 74, the environment simulation box 74 is provided with a clearance groove corresponding to the input shaft and the output shaft of the reducer 3, a nozzle 75 is fixedly arranged on the transparent cover of the environment simulation box 74 and penetrates into the environment simulation box 74, the nozzle 75 is communicated with a saltwater storage tank through an external pipeline, a circulating pump is arranged to pump the saltwater to the nozzle 75, the saltwater sprayed from the nozzle 75 falls to the bottom of the environment simulation box 74, is discharged from the gap of the upper edge of the rotating plate 12 and collected into the saltwater storage tank outside, and a temperature and humidity sensor is arranged in the environment simulation box 74 to monitor the temperature and humidity in the environment simulation box 74 in real time.

[0036] The lifting piece 73 can also be an electric push rod or other telescopic lifting structure, and the lifting piece 73 is fixedly connected with the environmental simulation box 74 through bolts, and the bottom wall of the environmental simulation box 74 is bonded with a plurality of microstructure physical adsorption glue, when the environmental simulation box 74 is driven by the lifting piece 73 to move downward to the upper surface of the rotating plate 12, the environmental simulation box 74 is fixed to the upper surface of the rotating plate 12 through the microstructure physical adsorption glue, then the connection between the lifting piece 73 and the environmental simulation box 74 is released, so that the lifting piece 73 rises alone, and the environmental simulation box 74 is fixedly connected with the cover outside the speed reducer 3 and the rotating plate 12, when the periodic pitching and rolling of the offshore platform equipment is simulated, the salt mist is sprayed into the environmental simulation box 74 through the nozzle 75, and the real scene of the speed reducer 3 in use on the offshore platform is comprehensively simulated.

[0037] Of course, if a high-temperature or low-temperature environment needs to be simulated, the nozzle 75 at the top of the environmental simulation box 74 can be replaced by a hot air pipe or a cold air pipe; through the above simple structure, the torque of the speed reducer 3 under the sway and the torque of the speed reducer 3 under the sway and the influence of seawater erosion can be detected, and the static torque of the speed reducer 3 in the horizontal state, the inclined state and the vertical state can also be detected, and when the static torque is detected in the vertical, horizontal or inclined state, the environmental simulation box 74 is not covered outside the speed reducer 3.

[0038] In the embodiments of the present application, unless specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The first feature can be directly below or obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.

[0039] In the description of the present application, it should be further pointed out that, unless specifically defined and limited, the terms "provided", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected, or slidingly connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A testing device for a speed reducer, comprising a support platform, a power device fixed on the support platform, a speed reducer, a torque sensor, and a load, wherein the output shaft of the power device is connected to the input shaft of the speed reducer, the output shaft of the speed reducer is connected to the input shaft of the torque sensor, and the output shaft of the torque sensor is connected to the input shaft of the load; characterized in that: The support platform includes a swing plate and a rotating plate rotatably mounted on top of the swing plate. The rotating plate reciprocates on the upper surface of the swing plate. The power equipment, reducer, torque sensor and load are all fixed on the upper surface of the rotating plate. It also includes a swaying mechanism and an auxiliary mechanism. The swaying mechanism includes a support, and the upper surface of the support and the lower surface of the swing plate are connected by a ball joint. The swaying mechanism also includes a driving component that drives the swing plate to sway back and forth around the ball joint. The auxiliary mechanism includes a base plate fixedly installed at the bottom of the support, a movable plate vertically installed on the base plate, a lifting component fixed on the movable plate, and an environmental simulation box detachably installed with the lifting component. A nozzle penetrating into the interior of the environmental simulation box is fixed on the transparent box cover at the top of the environmental simulation box. The static torque of the reducer is detected in horizontal and tilted states by means of a swaying mechanism. The static torque of the reducer in vertical state is detected by means of a swaying mechanism and an auxiliary mechanism. It can also simulate the effect of the reducer swaying due to sea waves and the effect of seawater erosion.

2. The test device for a speed reducer according to claim 1, characterized in that: A rotating shaft is fixed to the upper surface of the swing plate, and the rotating plate is rotatably sleeved on the rotating shaft. An annular groove coaxial with the rotating shaft is formed on the upper surface of the swing plate. Several circumferentially distributed fixed blocks are fixed inside the annular groove. Several circumferentially distributed sliders are fixed to the lower surface of the rotating plate. The sliders are slidably disposed in the annular groove. The sliders and the corresponding fixed blocks are connected by an elastic telescopic rod, which is an arc-shaped structure.

3. The test device for a speed reducer according to claim 2, characterized in that: The rotating plate reciprocates on the upper surface of the swing plate. The rotation of the rotating plate is accomplished by the cooperation of the actuating plate fixed on the edge of the rotating plate and the external rotating cam. The inner and outer ring surfaces and bottom surface of the slider are all embedded with balls, which roll in contact with the inner wall and bottom wall of the annular groove.

4. The testing device for a speed reducer according to claim 1, characterized in that: The driving component includes a swing rod rotatably mounted on the front and rear sides of the upper surface of the support via a mounting base. The left and right ends of the front side of the swing rod are provided with strip-shaped through holes, and a through rod is slidably installed in each strip-shaped through hole. The two corresponding through rods are connected by a concave frame. A hydraulic push rod is fixedly installed on the lower surface of the concave frame. Columns are fixedly installed on the left and right ends of the upper surface of the swing rod, and the upper surface of the columns is in contact with the lower surface of the swing plate.

5. The test device for a speed reducer according to claim 1, characterized in that: The upper surface of the base plate has several positioning holes evenly distributed from left to right, and the bottom of the movable plate is fixed to the base plate by positioning pins inserted into the positioning holes.

6. The testing device for a speed reducer according to claim 1, characterized in that: The environmental simulation box has clearance grooves on both the input and output shafts of the reducer. The nozzle is connected to the brine storage tank through an external pipe. When the salt mist sprayed from the nozzle falls to the bottom of the environmental simulation box, it is discharged from the notch on the upper edge of the rotating plate and collected in the external brine storage tank.

7. The test device for a speed reducer according to claim 1, characterized in that: When the lifting component moves the environmental simulation box down to the upper surface of the rotating plate, the environmental simulation box is fixed to the upper surface of the rotating plate by the microstructure physical adsorption adhesive.

8. A testing device for a speed reducer according to claim 1, characterized in that: When the moving plate changes from a vertical to a horizontal position, the reducer is rotated 90 degrees using a testing device, and several support plates are placed on the lower surface of the moving plate to ensure that the moving plate is in a stable horizontal position.

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