CN210953342U - Static force experimental device - Google Patents

Static force experimental device Download PDF

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Publication number
CN210953342U
CN210953342U CN201921321373.3U CN201921321373U CN210953342U CN 210953342 U CN210953342 U CN 210953342U CN 201921321373 U CN201921321373 U CN 201921321373U CN 210953342 U CN210953342 U CN 210953342U
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driving wheel
screw rod
transmission shaft
wheel
base
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CN201921321373.3U
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Chinese (zh)
Inventor
邓平
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Shenzhen Zero One Space Electronics Co ltd
Chongqing One Space Aerospace Technology Co Ltd
Beijing Zero One Space Technology Research Institute Co Ltd
Chongqing Zero One Space Technology Group Co Ltd
Xian Zero One Space Technology Co Ltd
Original Assignee
Shenzhen Zero One Space Electronics Co ltd
Chongqing One Space Aerospace Technology Co Ltd
Beijing Zero One Space Technology Research Institute Co Ltd
Chongqing Zero One Space Technology Group Co Ltd
Xian Zero One Space Technology Co Ltd
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Application filed by Shenzhen Zero One Space Electronics Co ltd, Chongqing One Space Aerospace Technology Co Ltd, Beijing Zero One Space Technology Research Institute Co Ltd, Chongqing Zero One Space Technology Group Co Ltd, Xian Zero One Space Technology Co Ltd filed Critical Shenzhen Zero One Space Electronics Co ltd
Priority to CN201921321373.3U priority Critical patent/CN210953342U/en
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Abstract

The application discloses a static force experiment device which comprises a base, a first driving wheel and a second driving wheel, wherein the first driving wheel and the second driving wheel are rotatably arranged on the base and are arranged in parallel; the first driving wheel is connected with the second driving wheel through a transmission mechanism; the first driving wheel is driven by the servo motor to rotate; the servo motor is connected with the first driving wheel through a planetary differential gear reducer; the second driving wheel is fixedly connected with a transmission shaft, and the top end of the transmission shaft is fixedly connected with a screw rod nut; the screw rod nut is internally threaded with a screw rod; the top end of the screw rod is fixedly connected with a telescopic rod; the bottom ends of the transmission shaft, the screw rod nut, the screw rod and the telescopic rod are positioned in the first cylinder body; the first cylinder body is fixed on the base; the transmission shaft and the lead screw nut are connected with the outer wall of the first cylinder body through a tapered roller bearing. The technical scheme of the application has the advantages of low noise, accurate control, no liquid oil and low environmental pollution; the device has compact structure and small occupied area.

Description

Static force experimental device
Technical Field
The present disclosure relates generally to the field of aerospace experimental devices, and more particularly to static experimental devices.
Background
Static tests are needed for a large number of special-shaped large structural parts in aerospace, and the static tests are used for observing and researching the strength, rigidity, stress and deformation distribution conditions of aircraft structures or structural parts under the action of static loads and are important means for verifying the structural strength and static analysis correctness of the aircraft; because the loading point position, the quantity, the load size and the direction of the special-shaped large component have large variation ranges, the currently adopted method is mostly hydraulic cylinder loading; the solution of hydraulic cylinder loading presents the following problems: the hydraulic scheme has large noise, hydraulic oil pollutes the working environment, equipment is heavy, and the workload of arranging pipelines is large.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a static force testing apparatus with low noise and compact structure.
The first aspect of the application provides a static force experiment device, which comprises a base, a first driving wheel and a second driving wheel, wherein the first driving wheel and the second driving wheel are rotatably arranged on the base and are arranged in parallel; the first driving wheel is connected with the second driving wheel through a transmission mechanism;
the first driving wheel is driven by the servo motor to rotate; the servo motor is connected with the first driving wheel through a planetary differential gear reducer;
the second driving wheel is fixedly connected with a transmission shaft, and the top end of the transmission shaft is fixedly connected with a screw rod nut; the lead screw nut is internally threaded with a lead screw; the top end of the screw rod is fixedly connected with a telescopic rod;
the bottom ends of the transmission shaft, the screw rod nut, the screw rod and the telescopic rod are positioned in the first cylinder body; the first cylinder body is fixed on the base; and the transmission shaft and the lead screw nut are connected with the outer wall of the first cylinder body through tapered roller bearings.
According to the technical scheme provided by the embodiment of the application, the transmission mechanism is a conveyor belt or a transmission gear.
According to the technical scheme that this application embodiment provided, the telescopic link is the type of falling T, its bottom card in first cylinder body.
According to the technical scheme provided by the embodiment of the application, the first driving wheel comprises an upper wheel and a lower wheel which are fixedly connected in the axial direction, a convex clamping groove is formed in the base, and the lower wheel is clamped in the clamping groove; the upper wheel protrudes out of the upper surface of the base; the side wall and the bottom wall of the clamping groove are provided with balls which are in contact with the lower wheel; the bottom wall of the clamping groove is provided with a supporting ball which is contacted with the middle part of the bottom surface of the lower wheel.
The servo motor, the planetary differential gear speed reducer, the first driving wheel, the second driving wheel, the transmission shaft and the screw rod structure are adopted to convert the rotating force of the servo motor into the force of the up-and-down movement of the telescopic rod, so that a power source is provided for a static experiment; compared with the traditional driving mode of the hydraulic cylinder, the technical scheme of the application can enable the telescopic rod to generate a large axial tension and compression load through the planetary differential gear speed reducer, and the servo motor has low noise, can be accurately controlled, has no liquid oil and causes little environmental pollution; in the technical scheme of the application, the first driving wheel and the second driving wheel are arranged in parallel, so that the axial rotating force of the servo motor is converted into the axial telescopic force of the screw rod arranged in parallel with the servo motor, the power part (one side where the servo motor is located) and the experimental stress part (one side where the screw rod is located) are arranged in parallel, the structure of the device is compact, and the occupied area is small; in the technical scheme of this application, through set up tapered roller bearing outside transmission shaft and screw-nut, receive the axial power that the lead screw received in the object static experiment and convert to the outer wall of first cylinder body through the bearing to protect lead screw, screw-nut isotructure, improved the stability and the life of this device.
According to the technical scheme that this application some embodiments provided, through the mode of designing first drive wheel for last wheel and lower wheel coaxial coupling, with the lower wheel card in the draw-in groove, and all be equipped with ball and support ball in the lateral wall and the bottom of draw-in groove, guaranteed the fastness of the connection structure of lower wheel with the base on the one hand, also greatly reduced the rotation resistance of first drive wheel in addition, improved the transmission efficiency of this device.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a first embodiment of the present application;
fig. 2 is a schematic structural diagram of a second embodiment of the present application.
Reference numbers in the figures:
100. a base; 110. a first drive wheel; 200. a servo motor; 120. a second drive wheel; 300. a planetary differential gear reducer; 400. a drive shaft; 500. a feed screw nut; 600. a screw rod; 700. a telescopic rod; 800. a first cylinder; 900. a tapered roller bearing; 910. a lower tapered roller bearing; 920. an upper tapered roller bearing; 111. an upper wheel; 112. a lower wheel; 130. a ball bearing; 140. a support ball; 150. a transmission rack.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
Please refer to fig. 1, which is a schematic structural diagram of an embodiment of a static force testing apparatus of the present application, including a base 100, a first driving wheel 110 and a second driving wheel 120, which are rotatably mounted on the base 100 and are disposed in parallel; the first driving wheel 110 is connected with the second driving wheel 120 through a transmission mechanism; in this embodiment, the first driving wheel 110 and the second driving wheel 120 are both gears, and the transmission mechanism is a transmission rack 150 engaged with the gears;
the first driving wheel 110 is driven by a servo motor 200 to rotate; the servo motor 200 is connected with the first driving wheel 110 through a planetary differential gear reducer 300; the input shaft of the planetary differential gear reducer 300 is coaxially and fixedly connected with the output shaft of the servo motor; an output shaft of the planetary differential gear reducer 300 is coaxially connected with the first driving wheel 110;
a transmission shaft 400 is fixedly connected to the second driving wheel 120; the top end of the transmission shaft 400 is fixedly connected with a screw nut 500; the lead screw 600 is connected with the inner thread of the lead screw nut 500; the top end of the screw rod 600 is fixedly connected with a telescopic rod 700;
the bottom ends of the transmission shaft 400, the feed screw nut 500, the feed screw 600 and the telescopic rod 700 are positioned in the first cylinder 800; the first cylinder 800 is fixed on the base 100; the transmission shaft 400 and the lead screw nut 500 are connected with the outer wall of the first cylinder 800 through a tapered roller bearing 900. The transmission shaft 400 is of a hollow T-shaped structure, the lead screw 600 can extend into a hollow through hole of the transmission shaft, the lead screw nut 500 is of a hollow inverted T-shaped structure, and the transmission shaft and a horizontal table top of the lead screw nut are butted and fixedly connected together through bolts; the transmission shaft 400 is connected with the outer wall of the first cylinder 800 through a lower tapered roller bearing 910; the feed screw nut 500 is connected to the outer wall of the first cylinder 800 through an upper tapered roller bearing 920.
The servo motor 200 drives the first driving wheel 110 to rotate through the planetary differential gear reducer 300, the first driving wheel drives the second driving wheel 120 to rotate through the rack, and the second driving wheel 120 drives the transmission shaft 400 and the screw nut 500 to rotate; the screw rod 600 provides axial tension and compression load upwards along with the rotation of the screw rod nut, so as to provide a power source for a static test; because the transmission ratio of the planetary differential gear reducer 300 is large, a large axial tension-compression load can be provided. The axial force on the telescopic rod 700 is transmitted to the outer wall of the cylinder body through the screw nut 500 and the upper tapered roller bearing 920, and the transmission shaft 400 and the lower tapered roller bearing 910.
In fig. 1, in order to facilitate viewing of the connection structure of each part, the base 100, the second driving wheel 120, the transmission shaft 400, the lead screw nut 500, the lead screw 600, the telescopic rod 700, the first cylinder 800 and the tapered roller bearing 900 are cut;
in other embodiments, the drive mechanism may also be a conveyor belt or a drive gear.
In this embodiment, the telescopic rod 700 is of an inverted T shape, and the bottom thereof is clamped in the first cylinder. The above-described structure of the telescopic bar 700 can limit the maximum upward displacement of the telescopic bar 700.
Example two
On the basis of the first embodiment, as shown in fig. 2, the first driving wheel 110 includes an upper wheel 111 and a lower wheel 112 that are fixedly connected in an axial direction, a convex-shaped slot is formed in the base 100, and the lower wheel 112 is clamped in the slot; the upper wheel 111 protrudes from the upper surface of the base; the side wall and the bottom wall of the clamping groove are provided with balls 130 which are in contact with the lower wheel; the bottom wall of the clamping groove is provided with a supporting ball 140 which is contacted with the middle part of the bottom surface of the lower wheel 112.
In the present embodiment, the second drive wheel 120 also has the above-described structure.
The above structure of the first driving wheel 110 and the second driving wheel can ensure the firm connection with the base, and the rotation resistance of the first driving wheel 110 and the second driving wheel 120 is as small as possible, thereby improving the transmission energy efficiency of the servo motor.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (4)

1. A static force experiment device is characterized by comprising a base, a first driving wheel and a second driving wheel which are rotatably arranged on the base and are arranged in parallel; the first driving wheel is connected with the second driving wheel through a transmission mechanism;
the first driving wheel is driven by the servo motor to rotate; the servo motor is connected with the first driving wheel through a planetary differential gear reducer;
the second driving wheel is fixedly connected with a transmission shaft, and the top end of the transmission shaft is fixedly connected with a screw rod nut; the lead screw nut is internally threaded with a lead screw; the top end of the screw rod is fixedly connected with a telescopic rod;
the bottom ends of the transmission shaft, the screw rod nut, the screw rod and the telescopic rod are positioned in the first cylinder body; the first cylinder body is fixed on the base; and the transmission shaft and the lead screw nut are connected with the outer wall of the first cylinder body through tapered roller bearings.
2. A static test apparatus according to claim 1, wherein the transmission mechanism is a conveyor belt or a transmission gear.
3. A static test apparatus according to claim 1 or 2, wherein the telescopic rod is of an inverted T shape, the bottom of which is clamped in the first cylinder.
4. A static test device according to claim 1 or 2, wherein the first driving wheel comprises an upper wheel and a lower wheel which are fixedly connected in the axial direction, a convex clamping groove is formed in the base, and the lower wheel is clamped in the clamping groove; the upper wheel protrudes out of the upper surface of the base; the side wall and the bottom wall of the clamping groove are provided with balls which are in contact with the lower wheel; the bottom wall of the clamping groove is provided with a supporting ball which is contacted with the middle part of the bottom surface of the lower wheel.
CN201921321373.3U 2019-08-15 2019-08-15 Static force experimental device Active CN210953342U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921321373.3U CN210953342U (en) 2019-08-15 2019-08-15 Static force experimental device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921321373.3U CN210953342U (en) 2019-08-15 2019-08-15 Static force experimental device

Publications (1)

Publication Number Publication Date
CN210953342U true CN210953342U (en) 2020-07-07

Family

ID=71388445

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921321373.3U Active CN210953342U (en) 2019-08-15 2019-08-15 Static force experimental device

Country Status (1)

Country Link
CN (1) CN210953342U (en)

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