CN214793744U - Linear actuator test equipment - Google Patents
Linear actuator test equipment Download PDFInfo
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- CN214793744U CN214793744U CN202120755822.6U CN202120755822U CN214793744U CN 214793744 U CN214793744 U CN 214793744U CN 202120755822 U CN202120755822 U CN 202120755822U CN 214793744 U CN214793744 U CN 214793744U
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Abstract
The utility model relates to a linear actuator test device, which comprises a frame, a transmission module and a loading module, wherein the transmission module and the loading module are arranged on the frame; the transmission module comprises a screw rod and a transmission mechanism, and the transmission mechanism transmits power generated by a power source to the screw rod to drive the screw rod to rotate forwards and backwards; the loading module is provided with a nut, the screw rod is in threaded fit with the nut, the nut is driven by positive and negative rotation of the screw rod to perform reciprocating translational motion along the screw rod, the reciprocating translational motion of the nut applies pulling force or pushing force to one end of a linear actuator testing piece arranged on the loading module, and the sensor detects a load value.
Description
Technical Field
The utility model belongs to the technical field of the technique of test equipment and specifically relates to a linear actuator test equipment.
Background
The linear actuator is an electric drive device which converts the rotation motion of a motor into the reciprocating translation motion of a push rod, is also a universal auxiliary drive device, can be used as an execution machine in various simple or technological processes to realize remote control, centralized control or automatic control, and is widely applied to industries such as electric power, machinery, metallurgy, mines, chemical engineering and the like. The no-load current, the opening thrust, the contraction thrust, the movement stroke and the like of the linear actuator are important parameters of the linear actuator, the quality of the linear actuator is determined, and the detection of the linear actuator is particularly important. The linear actuator testing equipment in the prior art has the problems of large equipment volume, inconvenient operation and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the linear actuator testing equipment is provided, and the problems that the existing linear actuator testing equipment is large in size, inconvenient to operate and the like are solved.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the linear actuator testing equipment comprises a rack, a transmission module and a loading module, wherein the transmission module and the loading module are mounted on the rack; the transmission module comprises a screw rod and a transmission mechanism, and the transmission mechanism transmits power generated by a power source to the screw rod to drive the screw rod to rotate forwards and backwards; the loading module is provided with a nut, the screw rod is in threaded fit with the nut, the nut is driven by positive and negative rotation of the screw rod to perform reciprocating translational motion along the screw rod, the reciprocating translational motion of the nut applies pulling force or pushing force to one end of a linear actuator testing piece arranged on the loading module, and the sensor detects a load value.
In some embodiments, one end of the linear actuator test piece is mounted to the loading module, and the other end is mounted to the frame; the other end of the sensor is connected to the rack through a sensor; the extension and contraction direction of the linear actuator test piece is consistent with the reciprocating translation motion direction of the screw nut.
In some embodiments, the loading module comprises a loading cross plate; the screw nut is arranged on the loading transverse plate, and the screw rod penetrates through the screw nut and is in threaded fit with the screw nut to support and drive the loading transverse plate to reciprocate; the loading transverse plate is of a flat plate structure; the sensor is a pull pressure sensor; the pulling pressure sensor is fixed on the loading transverse plate; the top of the pull pressure sensor is fixedly provided with an installation ear ring, and one end of a linear actuator test piece is installed on the installation ear ring; the other end of the linear actuator test piece is fixedly connected to the top wall of the frame.
In some embodiments, a buffering transverse plate is arranged on the loading transverse plate; the buffering transverse plate and the loading transverse plate are connected together in an elastic buffering manner; the screw is arranged on the buffering transverse plate and drives the buffering transverse plate and the loading transverse plate to perform reciprocating translational motion, and a pulling force or a pushing force load is applied to one end of a linear actuator testing piece arranged on the loading module.
In some embodiments, the buffering transverse plate and the loading transverse plate are connected together through a guide shaft and a spring, so that the buffering transverse plate and the loading transverse plate form relative movement of elastic buffering along the guide shaft and form reciprocating translational movement along the screw rod together;
Two ends of the guide shaft respectively penetrate through shaft holes formed in the buffering transverse plate and the loading transverse plate; the spring housing is established on the guiding axle, and the spring tip butt in: a nut or a nut at the tail end of the buffering transverse plate or the loading transverse plate or the guide shaft; one end of the guide shaft is provided with a nut to elastically fix the buffering transverse plate and the loading transverse plate, and the other end of the guide shaft is provided with a nut; and the buffer transverse plate and/or the loading transverse plate are/is provided with a shaft hole of a screw rod, and the screw rod penetrates through the shaft hole and the screw nut and is in threaded fit with the screw nut.
In some embodiments, the transmission module comprises a transmission shaft, the lead screw and a transmission mechanism; the power generated by the power source is output to the transmission shaft, and the transmission shaft and the screw rod are connected through the transmission mechanism, so that the power is transmitted to the screw rod.
In some embodiments, the power source is a motor, and an output shaft of the motor is coupled with the transmission shaft through a coupler to drive the transmission shaft to rotate synchronously; the transmission mechanism is one or combination of belt transmission, chain transmission, gear transmission, worm transmission and gear train.
In some embodiments, the transmission mechanism is a synchronizing wheel and a synchronizing belt or a synchronizing chain matched with the synchronizing wheel; the transmission shaft and the screw rod are provided with synchronous wheels which rotate synchronously, and the synchronous wheels are sleeved and connected with the synchronous belts; the transmission module comprises multi-stage transmission shafts, wherein the transmission shaft coupled with the power source is a one-stage transmission shaft, and the multi-stage transmission shafts are sequentially connected by a transmission mechanism; each stage of transmission shaft can be one or more; the transmission shaft is connected with the screw rod through the transmission mechanism, so that the screw rod is driven to synchronously rotate by the primary transmission shaft.
In some embodiments, a tensioning mechanism for adjusting the tensioning degree of the synchronous belt or the synchronous chain is arranged in the stroke of the transmission belt or the synchronous chain; the tensioning mechanism comprises a sliding block and a tensioning wheel arranged on the sliding block; the tension wheel is driven by the slide block to move back and forth towards the synchronous belt or the synchronous chain in a pushing or retreating way; when the degree of tension is adjusted, the tension wheel is attached to the synchronous belt or chain; the tensioning mechanism also comprises a fixed bottom plate, a screw rod is arranged on the fixed bottom plate, the sliding block is in threaded fit with the screw rod, and the sliding block and the tensioning wheel are driven to reciprocate by the rotation of the screw rod; the tensioning mechanism further comprises a guide shaft, and the guide shaft guides the sliding block to move.
In some embodiments, the rack includes a base and a top wall; the transmission module is arranged on the base; the linear actuator testing apparatus includes a plurality of lead screws; one end of the screw rod is rotatably arranged on the base of the frame through a bearing; the other end is arranged on the buffering transverse plate or the loading transverse plate through a nut; the bottom of the transmission shaft is rotatably arranged on a base of the frame through a bearing; a plurality of optical axes are arranged on the base; the optical axis guide buffer transverse plate or the loading transverse plate performs reciprocating translational motion; one end of the optical axis is arranged on a base of the frame; the other end of the connecting rod is connected with the buffering transverse plate or the loading transverse plate through a bearing arranged on the buffering transverse plate or the loading transverse plate; the base includes transmission upper plate, transmission hypoplastron and bottom plate: the transmission shaft is supported by a plurality of bearings and can be rotatably arranged on the transmission upper plate and the transmission lower plate; the transmission mechanisms among the transmission shafts are positioned between the transmission upper plate and the transmission lower plate; the screw rod is supported by a plurality of bearings and can be rotatably arranged on the bottom plate and the transmission lower plate; the transmission mechanism between the transmission shaft and the ratio rod is positioned between the bottom plate and the transmission lower plate.
The utility model has the advantages that:
the utility model discloses linear actuator test equipment takes up an area of for a short time, and convenient operation is nimble.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a perspective view of a linear actuator testing apparatus according to an embodiment of the present invention.
Fig. 2 is an internal structure diagram of a linear actuator testing apparatus according to an embodiment of the present invention, in which fig. 2(a) is a structure diagram of a transmission module, and fig. 2(b) is a structure diagram of a loading module.
Fig. 3 is a bottom structure view of a linear actuator testing apparatus according to an embodiment of the present invention.
Fig. 4 is a structural diagram of a transmission module structure of a linear actuator testing apparatus according to an embodiment of the present invention.
Fig. 5 is a perspective view of a tensioning mechanism of a linear actuator testing device according to an embodiment of the present invention.
Fig. 6 is a block diagram of a loading module of a linear actuator testing apparatus according to an embodiment of the present invention.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-6, an embodiment of the present invention relates to a testing apparatus 100 for a linear actuator, which mainly includes a power source 8, a transmission module 1, a loading module 2, a tension/compression sensor 4, and a frame 3. The loading module 2 and the transmission module 1 are arranged on the frame; the loading module 2 is used for mounting the linear actuator test piece 5. The transmission module 1 is coupled with the power source 8, the power generated by the power source is transmitted to the loading module 2, and the loading module 2 converts the power into thrust or tension loads at two ends of the linear actuator test piece 5 for testing. Specifically, the loading module 2 is provided with a nut 22, the lead screw 16 is in threaded fit with the nut 22, the positive and negative rotation of the lead screw 16 drives the nut 22 to perform reciprocating translational motion along the lead screw 16, the reciprocating translational motion of the nut 22 applies pulling force or pushing force to one end of the linear actuator testing piece 5 arranged on the loading module 2, and the sensor 4 detects a load value. The linear actuator test piece 5 is mounted at one end to the loading module 2 and at the other end to the frame 3, preferably by a sensor connected to the frame 3. The extension and contraction direction of the linear actuator test piece is consistent with the reciprocating translation movement direction of the screw nut 22.
In this embodiment, the rack 3 is a vertical structure, the transmission module 1 is installed at the bottom of the rack 3, and the loading module 2 is located at the upper portion of the rack 3. The top walls of the loading module 2 and the rack 3 are respectively connected with two ends of a linear actuator test piece 5 through a tension-compression sensor 4, and the loading module and the rack are vertically installed in the embodiment. The transmission module 1 transmits power to the loading module 2 through the lead screw, so that the loading module 2 drives one end of the linear actuator testing piece 5 to perform reciprocating translational motion, in the embodiment, the linear actuator testing piece moves up and down, a tensile load or a thrust load or no load is correspondingly formed, and accordingly, the linear actuator testing piece 5 extends or retracts. The pull pressure sensor 4 is used to measure the push or pull load value of the linear actuator. The pulling pressure sensor 4 may be connected to a display device or a data processing device to output a measured load value.
As an embodiment, the frame 3 includes a top wall 30, a base 31, and a plurality of columns 32, wherein the columns 32 connect the top wall 30 and the base 31 and form an installation space therebetween. The base 31 of the rack is used for installing the transmission module 1 and supporting the whole testing equipment. Base 31 may be provided with a multi-layer board support structure as desired. In the embodiment shown in fig. 1 and 3, the base 31 includes a transmission upper plate 33, a transmission lower plate 34 and a bottom plate 35, and the three-layer plate is a horizontal plate and can be set differently according to requirements.
The transmission module 1 comprises a transmission shaft 9, a screw rod 16 and a transmission mechanism. The power source 8 generates power to be output to the transmission shaft 9, and the transmission shaft 9 and the lead screw 16 are connected through the transmission mechanism, so that the power is transmitted to the loading module 2 to be converted into a pulling force or a pushing force applied to two ends of the linear actuator test piece 5. In this embodiment, the power source may be a motor, and the output shaft of the motor is connected to the transmission shaft 9 by the coupling 6 to drive the transmission shaft 9 to rotate synchronously.
The drive mechanism may be a belt drive, chain drive, gear drive, worm drive, gear train, etc., or other type of mechanical drive. The transmission mechanism is connected with the transmission shaft 9 and the screw rod 16 to realize the synchronous rotation of the transmission shaft 9 and the screw rod 16. In this embodiment, the transmission mechanism uses a walking belt 7 and a synchronizing wheel (or a chain wheel) 11 to realize power transmission in a rotating fit manner, specifically, the synchronizing wheel 11 is arranged on the transmission shaft and the screw rod, the synchronous belt 7 is connected with the transmission shaft and the synchronizing wheel on the screw rod, and the synchronizing wheel 11 and the corresponding transmission shaft or screw rod rotate synchronously, so that power transmission is realized.
The transmission module 1 can comprise a multi-stage transmission shaft so as to adjust the power and the stability of power output; wherein, the transmission shaft 9 coupled with the power source 8 is a one-stage transmission shaft, and the multi-stage transmission shafts are sequentially connected by a transmission mechanism; the transmission shaft is connected with the screw rod 16 through the transmission mechanism, so that the screw rod is driven to synchronously rotate by the primary transmission shaft. In this embodiment, the transmission module 1 is configured as a two-stage transmission, and accordingly, the transmission shaft 9 coupled to the power source is a one-stage transmission shaft, the second-stage transmission includes a two-stage transmission shaft 8, the two-stage transmission shaft 8 is also provided with a synchronizing wheel 11, and the synchronizing wheel on the one-stage transmission shaft and the two-stage transmission shaft is connected by a synchronous belt 7 so as to transmit power from the one-stage transmission shaft 9 to the two-stage transmission shaft 8. The secondary transmission shaft 8 is connected with the screw rod 16 through a synchronous belt 7, and the synchronous belt 7 is sleeved on synchronous wheels 11 respectively arranged on the secondary transmission shaft 8 and the screw rod 16. Multiple stages of transmission can be provided as desired.
The screw 16 may be one or more, and in the present embodiment, two screws are used, so as to stably support and output power. Correspondingly, two secondary transmission shafts 8 are arranged and are connected with a primary transmission shaft 9 through a synchronous belt 7 to synchronously rotate. The two secondary transmission shafts 8 are respectively connected with the two screw rods 16 through synchronous belts 7 (matched with synchronous wheels 11) to realize synchronous rotation. The synchronous belt 7 is sleeved on a synchronous wheel 11 arranged on the transmission shaft and the screw rod.
Specifically, the coupling 6 is connected with the primary transmission shaft 9 through a rectangular key, two ends of the primary transmission shaft 9 are supported through two bearings 14, and the primary transmission shaft 9 is rotatably installed on a transmission upper plate 33 and a transmission lower plate 34 of the rack base, a shaft hole is formed in the transmission upper plate 33, the transmission shaft 9 is vertically and rotatably installed on the transmission upper plate 33 and the transmission lower plate 34 and penetrates through the shaft hole in the transmission upper plate 33, and the top of the transmission shaft is coupled with the motor 8 through the coupling 6. The synchronizing wheel 11 is keyed with the primary transmission shaft 9, is positioned between the two bearings 14 and is supported in the space between the transmission upper plate 33 and the transmission lower plate 34. Two ends of the secondary transmission shaft 8 are supported by two bearings 14, and are rotatably installed on the transmission upper plate 33 and the transmission lower plate 34, and extend out of two ends of a shaft hole correspondingly formed in the transmission upper plate 33, two ends of the shaft hole are respectively rotatably installed on the transmission upper plate 33 and the bottom plate 35, two synchronizing wheels 11 are arranged on the secondary transmission shaft 8, the upper synchronizing wheels 11 are located between the two bearings 14 and are supported in a space between the transmission upper plate 33 and the transmission lower plate 34, and the synchronizing wheels 11 on the driving shaft 9 and the upper synchronizing wheels 11 of the secondary transmission shaft 8 are connected through a synchronous belt 7. The second synchronizing wheel 11 on the secondary transmission shaft 8 is a lower synchronizing wheel, is positioned in the space between the transmission lower plate 34 and the bottom plate 35, can be arranged on the bottom plate 35, and is used for being connected with the screw rod 16 through a synchronizing belt 7. The screw 16 is a ball screw, the bottom end of the screw is rotatably provided with a frame base 35, and the top end of the screw penetrates through a transmission lower plate 34 and a transmission upper plate 33 of the frame to extend upwards and is connected with the loading module 2. As an embodiment, a shaft hole is formed on the lower transmission plate 34 and penetrates through the upper and lower parts, the upper transmission plate 34 is narrow, and the screw 16 passes through the shaft hole on the lower transmission plate 34 and extends upwards from one side of the upper transmission plate 33. The screw rod 16 is provided with a fixed support 17, the fixed support 17 is annular and is fixed on a frame base (such as a transmission lower plate 34) through a fastener, and the screw rod 16 rotatably penetrates through the annular hollow interior of the fixed support 17. The lower synchronous wheel 11 of the secondary transmission shaft 8 is connected with the synchronous wheel 11 at the lower end of the ball screw 16 through the synchronous belt 7, and the fixed support 17 is fixed on the transmission lower plate 34 through a fastener such as a screw.
According to the stroke distance of the synchronous belt 7, a tensioning mechanism 10 can be configured to adjust the tensioning degree of the synchronous belt 7. Referring to fig. 5, a tensioning mechanism 10 is provided in each of the strokes of the timing belts 7 connecting the primary transmission shaft 9 and the secondary transmission shafts 8 on both sides. The tensioning mechanism 10 comprises a fixed bottom plate 12, a guide shaft 19, a screw 18, a slider 15, a tensioning wheel 13 and a clamp spring 130. The stationary base plate 12 is secured to the drive lower plate 34 by fasteners, such as screws. The fixing base plate 12 is provided at both ends thereof with fixing lugs, the guide shaft 19 and the screw 18 are arranged in parallel, each of both ends is mounted on the two fixing lugs, and the screw 18 is rotatably mounted on the fixing base plate 12. The slide block 15 is installed on the fixed bottom plate 12 in a reciprocating motion mode, slides between two ends of the two fixed bottom plates 12, namely two fixed lugs, the guide shaft 19 and the screw rod 18 penetrate through the slide block 15, the slide block 15 is in threaded fit with the screw rod 18, the slide block 15 is driven by positive and negative rotation of the screw rod 18 to move back and forth along the guide shaft 19 and the screw rod 18, and the position of the slide block is adjusted. The guide shaft 19 guides the movement of the slider 15 to stably slide. The tension wheel 13 is mounted on the sliding block 15, and the sliding block 15 carries the tension wheel 13 to advance or retreat relative to the synchronous belt so as to adjust the tension degree of the synchronous belt 7. The tension wheel 13 is attached to the synchronous belt 7. The tension wheel 13 is elastically clamped between the clamp spring 130 and the sliding block 15. The tension force of the synchronous belt 7 is adjusted by the screw 18 through the tension mechanism 10.
The loading module 2 includes a loading cross plate 20 for loading the linear actuator test piece 5. In this embodiment, the loading transverse plate 20 is a horizontal plate, on which the tension and pressure sensor 4 is installed, the tension and pressure sensor 4 can be fixed on the loading transverse plate 20 through a fastener 28 such as a screw or a nut, a linear actuator mounting ear 27 is installed on the top of the tension and pressure sensor 4, the mounting ear 27 is adapted to one end of the linear actuator testing piece 5, and one end of the linear actuator testing piece 5 is clamped in the mounting ear 27. In this embodiment, the mounting ear 27 is attached to the bottom end of the linear actuator test piece 5. The linear actuator mounting ear 27 may be secured to the tension and pressure sensor 4 by fasteners 28, such as screws. The other end (i.e., the top end) of the linear actuator test piece 5 is connected to another pressure sensor 4 and is fixed to the top wall 30 of the housing 3, or to a corresponding other location on the housing. In this embodiment, the linear actuator test piece 5 is mounted by the loading cross plate 20 and the frame 3, so that the linear actuator test piece 5 is kept vertically mounted, and the bottom end is stretched or compressed by the loading cross plate 20. The screw rod 16 is fixedly connected with the loading transverse plate 20, specifically, the screw rod 16 is in threaded fit with a nut 22 arranged on the loading transverse plate 20, and the screw rod 16 rotates to drive the nut 22 to drive the loading transverse plate 20 to ascend or descend. The screw rod 16 of the transmission module 1 rotates forwards and backwards to drive the screw nut 22 to move up and down, so as to drive the loading transverse plate 20 to move up and down, and apply a pulling force or a pushing force to the linear actuator test piece 5 connected to the loading transverse plate 20.
As a preferred embodiment, a buffering transverse plate 21 is provided on the loading transverse plate 20 for smooth application of the pulling or pushing load. The buffering transverse plate 21 and the loading transverse plate 20 are connected together in an elastic buffering manner; the nut 22 is arranged on the buffering transverse plate 21 and drives the buffering transverse plate 21 and the loading transverse plate 20 to perform reciprocating translational motion, and applies a pulling force or a pushing force load to one end of the linear actuator testing piece 5 arranged on the loading module 2. In the embodiment, the buffering transverse plate 21 and the loading transverse plate 20 are connected together by the guide shaft 29 and the spring 23, so that the buffering transverse plate 21 and the loading transverse plate 20 form relative movement along the elastic buffering of the guide shaft 29 and form reciprocating translational movement along the screw rod 16 together. Two ends of the guide shaft 29 respectively penetrate through shaft holes formed in the buffering transverse plate 21 and the loading transverse plate 20; the spring 23 is sleeved on the guide shaft 29, and the end part of the spring is abutted to: and a nut or a nut at the tail end of the buffer transverse plate or the loading transverse plate or the guide shaft. The guide shaft 29 has a nut 25 at one end thereof to elastically fix the buffer cross plate 21 and the loading cross plate 20, and a nut at the other end thereof. And the buffer transverse plate and/or the loading transverse plate are/is provided with a shaft hole of a screw rod, and the screw rod penetrates through the shaft hole and the screw nut and is in threaded fit with the screw nut.
The buffering transverse plate 21 and the loading transverse plate 20 can be parallel to each other, and the two are elastically connected to form relative movement of elastic buffering and can move up and down together. The guide shaft has a predetermined axial length such that the buffer cross plate 21 and the loading cross plate 20 can move relatively to each other to form a buffer and move up and down along the guide shaft 29 as a whole. The guiding axle 29 can be provided with a plurality of guiding axles, in the embodiment shown in the figure, the top end of the spring 23 abuts against the bottom surface of the buffering transverse plate 21, the spring abuts against the bottom end of the spring, and the bottom end of the spring abuts against the nut. The loading transverse plate 20 and the buffering transverse plate 21 are horizontal plate bodies and are perpendicular to the screw rod 16. The nut 22 is fixedly mounted to the horizontal cushioning plate 21, for example, the nut 22 is fixed to the horizontal cushioning plate 21 by a fastener 28 such as a screw. The loading transverse plate 20 is provided with a shaft hole which is through up and down, the screw rod 16 penetrates through the shaft hole from the bottom of the rack upwards, and the screw rod 16 is in threaded fit with the screw nut 22.
Further, a plurality of optical shafts 26 are provided on the frame base 31, and extend vertically upward through the loading cross plate 20 for guiding the loading module to move up and down. Specifically, the loading transverse plate 20 moves up and down along the optical axis 26, a copper sleeve flange bearing 24 is sleeved in a through hole formed in the loading transverse plate 20 and connected with the loading transverse plate 20 through a fastener 28 such as a screw, and the optical axis 26 penetrates through the copper sleeve flange bearing 24. The optical axis 26 and the copper bush flange bearing 24 play a role in guiding the loading transverse plate 20, so that the loading force can be ensured to be parallel to the output force of the test piece 5.
In a preferred embodiment, a plurality of screws 16, for example, two screws 16, are provided at two ends of the length of the loading cross plate 20, and two buffering cross plates 21 are provided to each fixedly mount a nut 22, which is screwed on the top of the screw 16. The optical axis 26 may be provided in plural numbers, for example, two, to guide the load transverse plate 20 to move up and down along the optical axis 26. The linear actuator test piece 5 is vertically mounted to the loading cross plate 20 at an intermediate position.
When the test equipment of the embodiment is utilized to carry out load test, the power source (a motor and other rotary output power sources) 8 is connected through the coupler 6, the power is transmitted to the synchronizing wheel 11 on the first-stage transmission shaft 9, the synchronizing wheel 11 on the first-stage transmission shaft 9 is transmitted to the synchronizing wheel 11 at the upper end of the second-stage transmission shaft 8 through the synchronous belt 7, the synchronizing wheel drives the lower synchronizing wheel 11 to rotate through the second-stage transmission shaft 8, the synchronizing wheel 11 at the lower end of the second-stage transmission shaft 8 drives the synchronizing wheel 11 at the lower end of the ball screw 16 to rotate through the synchronous belt 7, meanwhile, the ball screw 16 is driven to rotate, the ball screw 16 is connected with the screw 22, the screw 22 can be driven to move up and down when the ball screw 16 rotates, the screw 22 passes through the buffer plate 21, the spring 23 drives the loading transverse plate 20 to move, and therefore, the force effect is provided for the test piece 5.
The positive and negative rotation of the power source, such as the motor, can change the moving direction of the loading cross plate 20, so that the loading and unloading are two directions of stretching or compressing (pushing). Wherein, the no-load state is: when the measured force of the tension and pressure sensor 4 is 0, the loading module 2 is made to run in no-load mode when the ascending speed (or descending speed) is equal to the extending speed (or retracting speed) of the tested piece. The load state is as follows: when the pulling pressure sensor reaches a set load value, the loading module 1 is enabled to run in a loading mode when the ascending speed (or descending speed) is equal to the extending speed (or retracting speed) of the tested piece. The utility model discloses a test equipment structure is tight short, and test pulling force or thrust are steady.
The above-mentioned up-down direction or top/bottom position is illustrated by taking the direction as an example, the testing device 100 can be set in different directions, and the up-down direction, top and bottom position can be left, right or both sides, and the structure and working principle of the testing device are the same as those of the above-mentioned embodiment, and will not be described herein again.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be a mechanical connection, and can also be an electrical connection or a connection capable of transmitting data; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The use of the terms "a" or "an" and the like in the description or the claims of the present invention includes one or more than one unless explicitly stated to the contrary. Similarly, reference to "two" or "two" in the specification or claims includes two or more instances, unless explicitly stated to be the case for only two. Sometimes, words such as "plurality", "one or more" or "at least one" may be included in the claims and the description, however, in the absence of such a limitation, it is not meant and should not be construed as meaning, and it cannot be envisaged, that there are a plurality.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and are intended to be within the scope of the application; the scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The linear actuator testing equipment comprises a rack, a transmission module and a loading module, wherein the transmission module and the loading module are mounted on the rack; the method is characterized in that: the transmission module comprises a screw rod and a transmission mechanism, and the transmission mechanism transmits power generated by a power source to the screw rod to drive the screw rod to rotate forwards and backwards; the loading module is provided with a nut, the screw rod is in threaded fit with the nut, the nut is driven by positive and negative rotation of the screw rod to perform reciprocating translational motion along the screw rod, the reciprocating translational motion of the nut applies pulling force or pushing force to one end of a linear actuator testing piece arranged on the loading module, and the sensor detects a load value.
2. The linear actuator testing apparatus of claim 1, wherein: one end of the linear actuator test piece is mounted on the loading module, and the other end of the linear actuator test piece is mounted on the rack; the other end of the sensor is connected to the rack through a sensor; the extension and contraction direction of the linear actuator test piece is consistent with the reciprocating translation motion direction of the screw nut.
3. The linear actuator testing apparatus of claim 1, wherein:
the loading module comprises a loading transverse plate;
the screw nut is arranged on the loading transverse plate, and the screw rod penetrates through the screw nut and is in threaded fit with the screw nut to support and drive the loading transverse plate to reciprocate;
the loading transverse plate is of a flat plate structure;
the sensor is a pull pressure sensor; the pulling pressure sensor is fixed on the loading transverse plate; the top of the pull pressure sensor is fixedly provided with an installation ear ring, and one end of a linear actuator test piece is installed on the installation ear ring;
the other end of the linear actuator test piece is fixedly connected to the top wall of the frame.
4. The linear actuator testing apparatus of claim 3, wherein: a buffer transverse plate is arranged on the loading transverse plate; the buffering transverse plate and the loading transverse plate are connected together in an elastic buffering manner; the screw is arranged on the buffering transverse plate and drives the buffering transverse plate and the loading transverse plate to perform reciprocating translational motion, and a pulling force or a pushing force load is applied to one end of a linear actuator testing piece arranged on the loading module.
5. The linear actuator testing apparatus of claim 4, wherein:
the buffering transverse plate and the loading transverse plate are connected together through a guide shaft and a spring, so that elastic buffering relative motion along the guide shaft and reciprocating translational motion along the screw rod are formed between the buffering transverse plate and the loading transverse plate;
Two ends of the guide shaft respectively penetrate through shaft holes formed in the buffering transverse plate and the loading transverse plate; the spring housing is established on the guiding axle, and the spring tip butt in: a nut or a nut at the tail end of the buffering transverse plate or the loading transverse plate or the guide shaft;
one end of the guide shaft is provided with a nut to elastically fix the buffering transverse plate and the loading transverse plate, and the other end of the guide shaft is provided with a nut;
and the buffer transverse plate and/or the loading transverse plate are/is provided with a shaft hole of a screw rod, and the screw rod penetrates through the shaft hole and the screw nut and is in threaded fit with the screw nut.
6. The linear actuator testing apparatus of any one of claims 1-5, wherein: the transmission module comprises a transmission shaft, a screw rod and a transmission mechanism; the power generated by the power source is output to the transmission shaft, and the transmission shaft and the screw rod are connected through the transmission mechanism, so that the power is transmitted to the screw rod.
7. The linear actuator testing apparatus of claim 6, wherein: the power source is a motor, and an output shaft of the motor is coupled with the transmission shaft through a coupler to drive the transmission shaft to synchronously rotate; the transmission mechanism is one or combination of belt transmission, chain transmission, gear transmission, worm transmission and gear train.
8. The linear actuator testing apparatus of claim 7, wherein: the transmission mechanism is a synchronous wheel and a synchronous belt or a synchronous chain matched with the synchronous wheel; the transmission shaft and the screw rod are provided with synchronous wheels which rotate synchronously, and the synchronous wheels are sleeved and connected with the synchronous belts;
The transmission module comprises multi-stage transmission shafts, wherein the transmission shaft coupled with the power source is a one-stage transmission shaft, and the multi-stage transmission shafts are sequentially connected by a transmission mechanism; each stage of transmission shaft can be one or more;
the transmission shaft is connected with the screw rod through the transmission mechanism, so that the screw rod is driven to synchronously rotate by the primary transmission shaft.
9. The linear actuator testing apparatus of claim 8, wherein:
a tensioning mechanism for adjusting the tensioning degree of the synchronous belt or the synchronous chain is arranged in the stroke of the transmission belt or the synchronous chain; the tensioning mechanism comprises a sliding block and a tensioning wheel arranged on the sliding block; the tension wheel is driven by the slide block to move back and forth towards the synchronous belt or the synchronous chain in a pushing or retreating way; when the degree of tension is adjusted, the tension wheel is attached to the synchronous belt or chain;
the tensioning mechanism also comprises a fixed bottom plate, a screw rod is arranged on the fixed bottom plate, the sliding block is in threaded fit with the screw rod, and the sliding block and the tensioning wheel are driven to reciprocate by the rotation of the screw rod;
the tensioning mechanism further comprises a guide shaft, and the guide shaft guides the sliding block to move.
10. The linear actuator testing apparatus of claim 4, wherein:
the frame comprises a base and a top wall; the transmission module is arranged on the base;
The linear actuator testing apparatus includes a plurality of lead screws;
one end of the screw rod is rotatably arranged on the base of the frame through a bearing; the other end is arranged on the buffering transverse plate or the loading transverse plate through a nut;
the bottom of the transmission shaft is rotatably arranged on a base of the frame through a bearing;
a plurality of optical axes are arranged on the base; the optical axis guide buffer transverse plate or the loading transverse plate performs reciprocating translational motion;
one end of the optical axis is arranged on a base of the frame; the other end of the connecting rod is connected with the buffering transverse plate or the loading transverse plate through a bearing arranged on the buffering transverse plate or the loading transverse plate;
the base includes transmission upper plate, transmission hypoplastron and bottom plate:
the transmission shaft is supported by a plurality of bearings and can be rotatably arranged on the transmission upper plate and the transmission lower plate; the transmission mechanisms among the transmission shafts are positioned between the transmission upper plate and the transmission lower plate;
the screw rod is supported by a plurality of bearings and can be rotatably arranged on the bottom plate and the transmission lower plate; the transmission mechanism between the transmission shaft and the ratio rod is positioned between the bottom plate and the transmission lower plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120755822.6U CN214793744U (en) | 2021-04-13 | 2021-04-13 | Linear actuator test equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120755822.6U CN214793744U (en) | 2021-04-13 | 2021-04-13 | Linear actuator test equipment |
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| CN214793744U true CN214793744U (en) | 2021-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459747A (en) * | 2022-02-15 | 2022-05-10 | 上海锐淅医学科技有限公司 | Environment simulation type implant fatigue test equipment |
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2021
- 2021-04-13 CN CN202120755822.6U patent/CN214793744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459747A (en) * | 2022-02-15 | 2022-05-10 | 上海锐淅医学科技有限公司 | Environment simulation type implant fatigue test equipment |
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