Displacement control mechanism and device

Abstract

The utility model discloses a displacement control mechanism and device. The displacement control mechanism comprises a bottom plate; the bearing plate is arranged on the bottom plate; the sliding assembly is arranged between the bottom plate and the bearing plate; the traction assembly is connected with the sliding assembly; when the traction assembly moves, the sliding assembly is driven to move in the first direction X, so that the pressure bearing plate moves in the second direction Y. The sliding assembly is driven by the traction assembly to reciprocate on the bottom plate in the horizontal direction, so that the bearing plate can move up and down in the vertical direction, micro displacement adjustment of a load above the bearing plate in the vertical direction is achieved, the adjustment amplitude is easy to control, the adjustment period is short, and long-time position stability can be guaranteed.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of ship control technology, and in particular to a displacement control mechanism and device. Background Art

[0002] The ship propulsion device is the most important device in the ship. The elastic structure and elastomeric materials in the ship propulsion device cause permanent deformation of the rubber isolator under long-term tensile and compressive loads and environmental conditions, resulting in displacement changes of each elastic support point of the propulsion device. At present, the centering and attitude adjustment of elastically installed propulsion devices generally adopt manual adjustment methods. The adjustment range is not easy to control and the adjustment cycle is long. It can only guarantee the centering effect within a limited time, and cannot guarantee the optimal centering of the isolator during dynamic coupling under elastic installation conditions. As a result, the order disturbance force generated by misalignment frequently excites the unit to produce greater vibration; in addition, in order to ensure the quasi-static centering index requirements, the propulsion device frequently has the phenomenon of excessive difference in the height adjustment gasket of the isolator, resulting in excessive bearing capacity of some isolators, thereby affecting the service life of the isolator or even damage. Utility Model Content

[0003] The embodiments of the present application provide a displacement control mechanism and device to solve the technical problems in the prior art that the adjustment amplitude is difficult to control and the adjustment period is long when manually adjusting.

[0004] In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions:

[0005] In a first aspect, the present application provides a displacement control mechanism, comprising:

[0006] Base plate;

[0007] A pressure bearing plate, the pressure bearing plate is arranged on the bottom plate;

[0008] A sliding assembly, the sliding assembly being arranged between the bottom plate and the pressure plate;

[0009] A traction assembly, the traction assembly is connected to the sliding assembly;

[0010] When the traction assembly moves, it drives the sliding assembly to move along the first direction X, so that the pressure plate moves along the second direction Y.

[0011] In combination with the first aspect, the sliding assembly includes a first wedge block and a second wedge block, the first wedge block and the second wedge block are relatively arranged on the base plate and are slidably connected to the base plate, and when the traction assembly moves, it drives the first wedge block and the second wedge block to move toward or in the opposite direction on the base plate.

[0012] In combination with the first aspect, the first wedge block has a first inclined surface, and the second wedge block has a second inclined surface;

[0013] The pressure plate is an inverted trapezoidal block, and has a third inclined surface and a fourth inclined surface which are away from each other, the first inclined surface is in contact with the third inclined surface, and the second inclined surface is in contact with the fourth inclined surface.

[0014] In combination with the first aspect, the third inclined surface and the fourth inclined surface are both provided with a first limiting strip, the first inclined surface and the second inclined surface are both provided with a first limiting sliding groove, and the first limiting strip is slidably connected to the first limiting sliding groove.

[0015] In combination with the first aspect, the first wedge-shaped block has a first bottom surface, the second wedge-shaped block has a second bottom surface, the first bottom surface and the first inclined surface are opposite to each other, and the second bottom surface and the second inclined surface are opposite to each other;

[0016] The first bottom surface and the second bottom surface are both provided with a second limiting strip, the bottom plate is provided with a second limiting sliding groove, and the second limiting strip is slidably connected with the second limiting sliding groove.

[0017] In combination with the first aspect, the traction assembly includes:

[0018] a first limiting block, the first limiting block being connected to the first wedge-shaped block;

[0019] a second limiting block, the second limiting block being connected to the second wedge-shaped block;

[0020] A screw rod extends along the first direction X and passes through the first wedge block and the second wedge block, and the screw rod is connected to the first limit block and the second limit block.

[0021] In combination with the first aspect, the first limiting block is provided with a first fixed block, the second limiting block is provided with a second fixed block, the bottom plate is provided with a third limiting slide groove, and the first fixed block and the second fixed block are cooperatively connected with the third limiting slide groove.

[0022] In combination with the first aspect, the screw rod has a first connecting section, a second connecting section, a third connecting section, a fourth connecting section and a fifth connecting section which are connected in sequence;

[0023] The first limiting block and the second limiting block are located in the fourth connecting section.

[0024] In combination with the first aspect, the fourth connecting section is provided with a first external thread and a second external thread, the first limiting block is provided with a first nut, the first nut has a first internal thread, the second limiting block is provided with a second nut, the second nut has a second internal thread, the first external thread is cooperatively connected with the first internal thread, and the second external thread is cooperatively connected with the second internal thread.

[0025] In combination with the first aspect, the bottom plate is provided with a first bearing seat and a second bearing seat, and the first bearing seat and the second bearing seat are located at two ends of the screw rod;

[0026] Among them, a first bearing is arranged in the first bearing seat, a second bearing is arranged in the second bearing seat, the first bearing is connected to the third connecting section, and the second bearing is connected to the fifth connecting section.

[0027] In combination with the first aspect, the first connecting section is configured to be connectable to a motor, and the motor is used to drive the screw to rotate so that the first wedge block and the second wedge block move toward or in opposite directions on the bottom plate.

[0028] In combination with the first aspect, the second connecting section is provided with a limiting plate, and the limiting plate is connected to the first bearing seat.

[0029] In a second aspect, the present application provides a displacement control device, comprising:

[0030] a drive motor; and

[0031] The displacement control mechanism as described in any one of the first aspects;

[0032] The driving motor is configured to drive the lead screw in the traction assembly to rotate, so that when the sliding assembly moves along the first direction X, it drives the pressure plate to move along the second direction Y.

[0033] One of the above technical solutions has the following advantages or beneficial effects:

[0034] Compared with the prior art, the present application provides a displacement control mechanism, comprising: a bottom plate; a pressure plate, which is arranged on the bottom plate; a sliding assembly, which is arranged between the bottom plate and the pressure plate; a traction assembly, which is connected to the sliding assembly; wherein, when the traction assembly moves, it drives the sliding assembly to move along the first direction X, so that the pressure plate moves along the second direction Y. The present application drives the sliding assembly to reciprocate in the horizontal direction on the bottom plate through the traction assembly, so that the pressure plate can move up and down in the vertical direction, thereby realizing a small vertical displacement adjustment of the load above the pressure plate, the adjustment range is easy to control, the adjustment cycle is short, and the position stability can be guaranteed for a long time.

[0035] The present application provides a displacement control device, comprising: a driving motor; and a displacement control mechanism; the driving motor is configured to drive the screw in the traction assembly to rotate, so that when the sliding assembly moves along the first direction X, the pressure plate is driven to move along the second direction Y. The present application drives the screw to rotate by the driving motor, so that the sliding assembly can reciprocate in the horizontal direction, and the pressure plate can move up and down in the vertical direction, thereby realizing a small vertical displacement adjustment of the load above the pressure plate, the adjustment range is easy to control, the adjustment cycle is short, and the position stability can be guaranteed for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0037] Figure 1 A schematic diagram of the front view structure provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of the connection structure of the base plate, the traction assembly and the sliding assembly provided in an embodiment of the present application;

[0039] Figure 3 A bottom view structural schematic diagram of a base plate provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of a first wedge block provided in an embodiment of the present application;

[0041] Figure 5 A left-side structural schematic diagram of a first wedge block provided in an embodiment of the present application;

[0042] Figure 6 A schematic diagram of a top view of the bottom plate provided in an embodiment of the present application;

[0043] Figure 7 A schematic diagram of the explosion structure of the first limiting block side provided in an embodiment of the present application;

[0044] Figure 8 A schematic diagram of the explosion structure of the second limiting block side provided in an embodiment of the present application;

[0045] Fig. 9 A schematic diagram of the structure of the first limit block and the second limit block provided in an embodiment of the present application;

[0046] Fig.10 A schematic diagram of the structure of the screw rod provided in an embodiment of the present application.

[0047] The reference numerals are as follows:

[0048] 100-bottom plate, 110-second limiting slide, 120-first bearing seat, 121-first bearing, 130-second bearing seat, 131-second bearing, 140-third limiting slide, 150-bearing connection platform, 200-pressure plate, 210-third inclined surface, 211-first limiting strip, 220-fourth inclined surface, 300-sliding assembly, 310-first wedge block, 311-first inclined surface, 312-first bottom surface, 313-second limiting strip, 320-second wedge block, 321-first Two inclined surfaces, 322-first limiting slide groove, 323-second bottom surface, 400-traction assembly, 410-first limiting block, 411-first fixed block, 420-second limiting block, 421-second fixed block, 430-screw rod, 431-first connecting section, 432-second connecting section, 433-third connecting section, 434-fourth connecting section, 435-fifth connecting section, 440-first external thread, 450-second external thread, 460-first nut, 470-second nut, 480-limiting plate. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. In the description of the present application, it is necessary to understand that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0050] The specific implementation methods of the present application are described below by way of examples:

[0051] like Figures 1 to 10As shown, the embodiment of the present application provides a displacement control mechanism, including: a base plate 100; a pressure plate 200, the pressure plate 200 is arranged on the base plate 100; a sliding assembly 300, the sliding assembly 300 is arranged between the base plate 100 and the pressure plate 200; a traction assembly 400, the traction assembly 400 is connected to the sliding assembly 300; wherein, when the traction assembly 400 moves, it drives the sliding assembly 300 to move along the first direction X, so that the pressure plate 200 moves along the second direction Y. Specifically, the pressure plate 200 is used to carry the load to be moved, and the top surface of the pressure plate 200 can be a plane or a concave surface. The top surface of the pressure plate 200 can be provided with a shock absorbing component, such as a gasket, a cushion, etc. The bottom plate 100 is used to carry the sliding assembly 300, the traction assembly 400 and the pressure plate 200. The bottom surface of the bottom plate 100 is a plane. The bottom surface of the bottom plate 100 can be provided with a supporting component, an adjusting component or a moving component. The supporting component is used to support the bottom plate 100; the adjusting component is provided at the four corners of the bottom plate 100 and can be used to adjust the horizontal position of the bottom plate 100; and the moving component can be used to move the displacement control mechanism, so as to facilitate the transportation of the displacement control mechanism. The traction assembly 400 and the sliding assembly 300 cooperate with each other. The traction assembly 400 starts to move relative to the bottom plate 100 under the drive of the external driving device, and drives the sliding assembly 300 that cooperates with it to move during the movement. When the traction assembly 400 moves, the sliding assembly 300 reciprocates in the first direction X (i.e., the horizontal direction), thereby forcing the pressure plate 200 located above the sliding assembly 300 to move up and down in the second direction Y (i.e., the vertical direction), thereby achieving a slight vertical displacement adjustment of the load above the pressure plate. The adjustment range is easy to control, the adjustment cycle is short, and the position stability can be guaranteed for a long time.

[0052] like Figure 1 and Figure 2 As shown, in the embodiment of the present application, the sliding assembly 300 includes a first wedge block 310 and a second wedge block 320, which are relatively arranged on the bottom plate 100 and slidably connected to the bottom plate 100. When the traction assembly 400 moves, the first wedge block 310 and the second wedge block 320 are driven to move toward or in the opposite direction on the bottom plate 100. Specifically, when the first wedge block 310 and the second wedge block 320 move toward each other in the horizontal direction driven by the traction assembly 400, the space above the first wedge block 310 and the second wedge block 320 is compressed and reduced, so that the pressure plate 200 moves vertically upward under the push of the first wedge block 310 and the second wedge block 320; when the first wedge block 310 and the second wedge block 320 move in the opposite direction in the horizontal direction driven by the traction assembly 400, the space above the first wedge block 310 and the second wedge block 320 is vacated, and the pressure plate 200 moves downward under the action of gravity.

[0053] like Figure 1 , Figure 2 and Figure 3 As shown, in the embodiment of the present application, the first wedge block 310 has a first inclined surface 311, and the second wedge block 320 has a second inclined surface 321; the pressure plate 200 is an inverted trapezoidal block, and the pressure plate 200 has a third inclined surface 210 and a fourth inclined surface 220 that are opposite to each other, the first inclined surface 311 is in contact with the third inclined surface 210, and the second inclined surface 321 is in contact with the fourth inclined surface 220. Specifically, the first inclined surface 311 and the second inclined surface 321 are arranged opposite to each other, so that when the first wedge block 310 and the second wedge block 320 are close to each other, the space above the first wedge block 310 and the second wedge block 320 is reduced, so that the pressure plate 200 moves upward; when the first wedge block 310 and the second wedge block 320 are away from each other, the space above the first wedge block 310 and the second wedge block 320 increases, and the pressure plate 200 moves downward; it is worth noting that in order to improve the smoothness of the pressure plate 200 during movement, the third inclined surface 210 that is in contact with the first inclined surface 311 and the fourth inclined surface 220 that is in contact with the second inclined surface 321 are arranged on the pressure plate 200. Thereby, the pressure plate 200 is prevented from moving upward or downward smoothly. It should be noted that in the embodiment of the present application, the first inclined surface 311, the second inclined surface 321, the third inclined surface 210 and the fourth inclined surface 220 are all flat surfaces. In some other embodiments of the present application, the first inclined surface 311 and the second inclined surface 321 may be arc surfaces convex upward, and the third inclined surface 210 and the fourth inclined surface 220 may be arc surfaces convex downward.

[0054] like Figure 3 and Figure 4 As shown, in the embodiment of the present application, the third inclined surface 210 and the fourth inclined surface 220 are both provided with a first limiting strip 211, and the first inclined surface 311 and the second inclined surface 321 are both provided with a first limiting slot 322, and the first limiting strip 211 is slidably connected with the first limiting slot 322. Specifically, when the first wedge block 310 and the second wedge block 320 are close to or away from each other, the first limiting strip 211 on the third inclined surface 210 and the fourth inclined surface 220 moves along the first limiting slot 322 on the first inclined surface 311 and the second inclined surface 321, thereby limiting the movement trajectory of the pressure plate 200, preventing the pressure plate 200 from tilting or moving in other directions during the up and down movement, thereby improving the accuracy of the vertical up and down displacement of the pressure plate 200. There are a plurality of first limiting strips 211, all of which are long strips, and the cross section is any one or more of L-shaped, T-shaped, U-shaped, V-shaped, W-shaped or M-shaped. Correspondingly, the cross-sectional shape of the first limiting slide groove 322 is the same as the shape of the first limiting strip 211. It should be noted that the cross-sectional shape of the first limiting strip 211 and the first limiting slide groove 322 can also be other shapes, which can be selected according to actual conditions, and the embodiments of the present application will not be listed in detail here.

[0055] like Figure 4 and Figure 5 As shown, in the embodiment of the present application, the first wedge block 310 has a first bottom surface 312, the second wedge block 320 has a second bottom surface 323, the first bottom surface 312 and the first inclined surface 311 are separated from each other, and the second bottom surface 323 and the second inclined surface 321 are separated from each other; the first bottom surface 312 and the second bottom surface 323 are both provided with a second limiting strip 313, the bottom plate 100 is provided with a second limiting slide groove 110, and the second limiting strip 313 is slidably connected with the second limiting slide groove 110. Specifically, when the first wedge block 310 and the second wedge block 320 are close to or away from each other, the second limiting strip 313 on the first bottom surface 312 and the second bottom surface 323 moves along the second limiting slide groove 110 on the bottom plate 100, thereby limiting the movement tracks of the first wedge block 310 and the second wedge block 320, and preventing the first wedge block 310 and the second wedge block 320 from moving in inconsistent directions or moving in other directions during the horizontal movement process. There are multiple second limit bars 313 and second limit slots 110, all of which are long strips, and the cross-section is any one or more of L-shaped, T-shaped, U-shaped, V-shaped, W-shaped or M-shaped. Correspondingly, the cross-sectional shape of the second limit slot 110 is the same as the shape of the first limit bar 211. It should be noted that the cross-sectional shape of the second limit bar 313 and the second limit slot 110 can also be other shapes, and the specific shape can be selected according to actual conditions, and the embodiments of the present application will not be listed in detail here.

[0056] like Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig.10As shown, in the embodiment of the present application, the traction assembly 400 includes: a first limit block 410, the first limit block 410 is connected to the first wedge block 310; a second limit block 420, the second limit block 420 is connected to the second wedge block 320; a screw rod 430, the screw rod 430 extends along the first direction X and passes through the first wedge block 310 and the second wedge block 320, and the screw rod 430 is connected to the first limit block 410 and the second limit block 420. Specifically, the first wedge block 310 and the second wedge block 320 are both provided with a through slot; wherein the first limit block 410 is fixedly arranged in the slot of the first wedge block 310, and the second limit block 420 is fixedly arranged in the slot of the second wedge block 320; and the screw rod 430 passes through the first limit block 410, the slot of the first wedge block 310, the slot of the second wedge block 320 and the second limit block 420 in sequence. The first limit block 410 and the second limit block 420 are driven to move by rotating the screw rod 430, so that the first wedge block 310 and the second wedge block 320 can move together. It should be noted that the first limit block 410 and the second limit block 420 can be fixedly connected to the slots of the first wedge block 310 and the second wedge block 320 respectively by means of screws or buckles. The specific method of fixed connection can be selected according to actual conditions, and the embodiments of the present application are not listed in detail here.

[0057] like Figure 1 , Figure 7 , Figure 8 and Fig. 9 As shown, in the embodiment of the present application, the first limit block 410 is provided with a first fixed block 411, the second limit block 420 is provided with a second fixed block 421, the bottom plate 100 is provided with a third limit slide 140, and the first fixed block 411 and the second fixed block 421 are matched and connected with the third limit slide 140. Specifically, when the first limit block 410 and the second limit block 420 move back and forth on the bottom plate 100, the first fixed block 411 and the second fixed block 421 move along the third limit slide 140. By limiting the first fixed block 411 and the second fixed block 421 by the third limit slide 140, the first limit block 410 and the second limit block 420 can be prevented from being offset in position during the movement process, thereby avoiding deviation in the movement trajectory of the first wedge block 310 and the second wedge block 320, and preventing the pressure plate 200 from being uneven. The restriction of the first fixed block 411 and the second fixed block 421 by the third limiting sliding groove 140 can ensure that the pressure plate 200 always maintains a horizontal state when moving up and down.

[0058] like Figure 1 , Figure 7 , Figure 8 and Fig.10As shown, in the embodiment of the present application, the screw rod 430 has a first connection segment 431, a second connection segment 432, a third connection segment 433, a fourth connection segment 434 and a fifth connection segment 435 which are connected in sequence; the first limit block 410 and the second limit block 420 are located in the fourth connection segment 434. Specifically, the size of the fourth connection segment 434 is larger than the size of the first connection segment 431, the second connection segment 432, the third connection segment 433 and the fifth connection segment 435. During the traction process, the first limit block 410 and the second limit block 420 reciprocate along the fourth connection segment 434, thereby driving the movement of the first wedge block 310 and the second wedge block 320.

[0059] like Figure 1 , Figure 7 , Figure 8 and Fig.10 As shown, in the embodiment of the present application, the fourth connecting section 434 is provided with a first external thread 440 and a second external thread 450, the first limit block 410 is provided with a first nut 460, the first nut 460 has a first internal thread, the second limit block 420 is provided with a second nut 470, the second nut 470 has a second internal thread, the first external thread 440 is matched with the first internal thread, and the second external thread 450 is matched with the second internal thread. Specifically, the first nut 460 is fixed in the first limit block 410, and the second nut 470 is fixed in the second limit block 420. The first external thread 440 and the second external thread 450 are reverse threads, that is, the spiral directions of the threads are opposite; and the first external thread 440 and the second external thread 450 are respectively provided at both ends of the screw rod 430, and the two are blocked from each other. When the screw rod 430 rotates clockwise or counterclockwise, the first nut 460 and the second nut 470 threadedly connected thereto will move closer to or farther from each other due to the existence of reverse threads, so that the first limit block 410 and the second limit block 420 are pushed and moved by the first nut 460 and the second nut 470 respectively.

[0060] like Figure 1 , Figure 2 and Figure 6As shown, in the embodiment of the present application, the bottom plate 100 is provided with a first bearing seat 120 and a second bearing seat 130, and the first bearing seat 120 and the second bearing seat 130 are located at both ends of the screw rod 430; wherein, the first bearing seat 120 is provided with a first bearing 121, and the second bearing seat 130 is provided with a second bearing 131, the first bearing 121 is connected to the third connecting section 433, and the second bearing 131 is connected to the fifth connecting section 435. Specifically, two opposite bearing connecting platforms 150 are provided on the bottom plate 100, the first bearing seat 120 is fixedly connected to one of the bearing connecting platforms 150, and the second bearing seat 130 is fixedly connected to the other bearing connecting platform 150. The third connecting section 433 of the screw rod 430 is fixedly connected to the central axis of the first bearing 121, thereby realizing rotational connection with the first bearing seat 120, and the fifth connecting section 435 of the screw rod 430 is fixedly connected to the central axis of the second bearing 131, thereby realizing rotational connection with the second bearing seat 130. The diameters of the third connecting segment 433 and the fifth connecting segment 435 are smaller than the diameter of the fourth connecting segment 434 , thus limiting the movement of the first bearing 121 and the second bearing 131 .

[0061] In the embodiment of the present application, the screw 430 includes a bidirectional ball screw, the first nut 460 and the second nut 470 include bidirectional ball nuts, and the first bearing seat 120 and the second bearing seat 130 include ball screw bearing seats. By using a ball screw as the screw 430 of the present application, the friction between the screw 430 and the first nut 460 and the second nut 470 can be reduced when the screw 430 rotates, and the heat loss can be reduced, thereby improving the transmission efficiency of the power of the screw 430.

[0062] like Figure 1 , Figure 2 and Figure 6 As shown, in the embodiment of the present application, the first connecting section 431 is configured to be connected to a motor, and the motor is used to drive the screw rod 430 to rotate, so that the first wedge block 310 and the second wedge block 320 move toward or in the opposite direction on the bottom plate 100. Specifically, a gear or a roller can be provided on the first connecting section 431 to be connected to the output shaft of the motor. When the motor rotates, the screw rod 430 rotates together, thereby providing power support for the screw rod 430.

[0063] like Figure 7 As shown, in the embodiment of the present application, the second connecting section 432 is provided with a limiting piece 480, and the limiting piece 480 is connected to the first bearing seat 120. Specifically, after the limiting piece 480 is connected to the first bearing seat 120, it is used to limit the first bearing 121 to prevent the first bearing 121 from falling off during the rotation process. Correspondingly, a limiting piece 480 can also be provided on one side of the second bearing seat 130 to limit the second bearing 131 to prevent the second bearing 131 from falling off during the rotation process, thereby ensuring the effective operation of the first bearing 121 and the second bearing 131.

[0064] The embodiment of the present application also provides a displacement control device, including: a driving motor; and a displacement control mechanism as provided in any of the above items; the driving motor is configured to drive the screw rod 430 in the traction assembly 400 to rotate, so that when the sliding assembly 300 moves along the first direction X, the pressure plate 200 is driven to move along the second direction Y. Specifically, a gear or a roller can be provided at the end of the screw rod 430, and a gear or a roller can also be provided on the output shaft of the driving motor; the driving motor is connected to the gear or roller on the screw rod 430 through the gear or roller, and is used to drive the screw rod 430 to rotate, thereby realizing the control of the up and down movement of the pressure plate 200.

[0065] The embodiment of the present application further provides a centering control system, which is configured to center the propulsion device in midair, and includes the displacement control device provided above, or includes the displacement control mechanism provided above; and

[0066] Acceleration sensor, the acceleration sensor is used to obtain the vibration signal of the propulsion device; displacement sensor, the displacement sensor is used to obtain the displacement signal of the propulsion device; the centering control system makes decisions based on the vibration signal and the displacement signal through a multi-channel decoupling control algorithm to obtain a control signal, and the control signal is output to the displacement control device through a power amplifier; wherein, the displacement control device includes a drive motor, and the rotation of the drive motor is controlled by controlling the rotation angle and number of cycles of the drive motor. It can be imagined that the drive motor is connected to the screw 430 through a torque amplification device, thereby realizing force transmission and millimeter-level displacement control. The centering control system senses the changes in the centering posture of the propulsion device in real time, thereby quickly outputting a control signal to control the posture of the propulsion device.

[0067] The torque required by the output shaft of the driving motor on one end of the screw rod 430 is analyzed as follows:

[0068] During the working process of the screw rod 430, the screw rod 430 is mainly subjected to radial pressure loads from the first limit block 410 and the second limit block 420. In order to check the strength of the screw rod 430, the preload force of the screw rod 430 needs to be estimated first:

[0069] F0μzm≥KF 杆 ;

[0070] Right now:

[0071] F0≥KF 杆 / μzm;

[0072] Among them, F0 is the preload; μ is the contact surface friction coefficient, which can be 0.1 to 0.15 for steel or cast iron contact surfaces; z is the number of connecting screws 430; m is the number of joint surfaces; K is the tightening coefficient of the threaded connection, F 杆The pressure on the screw connecting the slider;

[0073] Friction force between contact surfaces of threaded connection:

[0074] F f =μF0;

[0075] Calculate the friction force F between the contact surfaces of the threaded connection f After that, the thrust F of the screw rod 430 on the slider can be calculated.

[0076] According to the thrust calculation formula of screw rod 430:

[0077] Fh=2πTη;

[0078] Among them, F is the thrust of the screw 430; h is the lead of the screw 430; T is the torque required to be applied at the end of the screw 430; η is the transmission efficiency of the screw 430, which is generally 0.9 to 0.95.

[0079] From the above formula, it can be known that the torque required to be applied at the end of the screw rod 430 is:

[0080] T = Fh / 2πη;

[0081] The material of the screw 430 is 45# steel; for the piston screw 430, the number of connecting screws 430 and the number of joint surfaces are both 1; the contact surface friction coefficient is 0.15; the tightening coefficient K of the threaded connection is 1.5; the lead h of the screw 430 is set to 10mm, the transmission efficiency of the ordinary screw 430 is 0.9, and the transmission efficiency of the ball screw 430 is 0.95. After substituting, the torque T required to be applied at the end of the screw 430 can be calculated.

[0082] The above is a detailed introduction to a displacement control mechanism and device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A displacement control mechanism, characterized in that: include: Bottom plate (100); A pressure-bearing plate (200), wherein the pressure-bearing plate (200) is arranged on the bottom plate (100); A sliding assembly (300), wherein the sliding assembly (300) is arranged between the bottom plate (100) and the pressure plate (200); A traction assembly (400), wherein the traction assembly (400) is connected to the sliding assembly (300); When the traction assembly (400) moves, it drives the sliding assembly (300) to move along a first direction (X), so that the pressure plate (200) moves along a second direction (Y).

2. The displacement control mechanism according to claim 1, characterized in that: The sliding assembly (300) comprises a first wedge block (310) and a second wedge block (320), wherein the first wedge block (310) and the second wedge block (320) are arranged on the bottom plate (100) relative to each other and are slidably connected to the bottom plate (100), and when the traction assembly (400) moves, the first wedge block (310) and the second wedge block (320) are driven to move towards or in opposite directions on the bottom plate (100).

3. The displacement control mechanism according to claim 2, characterized in that: The first wedge block (310) has a first inclined surface (311), and the second wedge block (320) has a second inclined surface (321); The pressure plate (200) is an inverted trapezoidal block, and the pressure plate (200) has a third inclined surface (210) and a fourth inclined surface (220) that are away from each other, the first inclined surface (311) is in contact with the third inclined surface (210), and the second inclined surface (321) is in contact with the fourth inclined surface (220).

4. The displacement control mechanism according to claim 3, characterized in that: The third inclined surface (210) and the fourth inclined surface (220) are both provided with a first limiting strip (211), the first inclined surface (311) and the second inclined surface (321) are both provided with a first limiting sliding groove (322), and the first limiting strip (211) is slidably connected to the first limiting sliding groove (322).

5. The displacement control mechanism according to claim 4, characterized in that: The first wedge-shaped block (310) has a first bottom surface (312), the second wedge-shaped block (320) has a second bottom surface (323), the first bottom surface (312) and the first inclined surface (311) are opposite to each other, and the second bottom surface (323) and the second inclined surface (321) are opposite to each other; The first bottom surface (312) and the second bottom surface (323) are both provided with a second limiting strip (313), the bottom plate (100) is provided with a second limiting slide groove (110), and the second limiting strip (313) is slidably connected to the second limiting slide groove (110).

6. The displacement control mechanism according to any one of claims 2 to 5, characterized in that: The traction assembly (400) comprises: A first limiting block (410), wherein the first limiting block (410) is connected to the first wedge-shaped block (310); A second limiting block (420), wherein the second limiting block (420) is connected to the second wedge-shaped block (320); A screw rod (430), the screw rod (430) extends along the first direction (X) and passes through the first wedge block (310) and the second wedge block (320), and the screw rod (430) is connected to the first limit block (410) and the second limit block (420).

7. The displacement control mechanism according to claim 6, characterized in that: The first limiting block (410) is provided with a first fixed block (411), the second limiting block (420) is provided with a second fixed block (421), the bottom plate (100) is provided with a third limiting sliding groove (140), and the first fixed block (411) and the second fixed block (421) are cooperatively connected with the third limiting sliding groove (140).

8. The displacement control mechanism according to claim 6, characterized in that: The screw rod (430) comprises a first connecting section (431), a second connecting section (432), a third connecting section (433), a fourth connecting section (434) and a fifth connecting section (435) which are connected in sequence; The first limiting block (410) and the second limiting block (420) are located in the fourth connecting section (434).

9. The displacement control mechanism according to claim 8, characterized in that: The fourth connecting section (434) is provided with a first external thread (440) and a second external thread (450); the first limiting block (410) is provided with a first nut (460), and the first nut (460) has a first internal thread; the second limiting block (420) is provided with a second nut (470), and the second nut (470) has a second internal thread; the first external thread (440) is connected to the first internal thread in a cooperative manner, and the second external thread (450) is connected to the second internal thread in a cooperative manner.

10. The displacement control mechanism according to claim 8, characterized in that: The bottom plate (100) is provided with a first bearing seat (120) and a second bearing seat (130), wherein the first bearing seat (120) and the second bearing seat (130) are located at two ends of the screw rod (430); The first bearing seat (120) is provided with a first bearing (121), the second bearing seat (130) is provided with a second bearing (131), the first bearing (121) is connected to the third connecting section (433), and the second bearing (131) is connected to the fifth connecting section (435).

11. The displacement control mechanism according to claim 8, characterized in that: The first connecting section (431) is configured to be connectable to a motor, and the motor is used to drive the screw rod (430) to rotate so that the first wedge block (310) and the second wedge block (320) move toward or in opposite directions on the base plate (100).

12. The displacement control mechanism according to claim 10, characterized in that: The second connecting section (432) is provided with a limiting plate (480), and the limiting plate (480) is connected to the first bearing seat (120).

13. A displacement control device, characterized in that: include: Drive motor; as well as The displacement control mechanism according to any one of claims 1 to 12; The driving motor is configured to drive the screw rod (430) in the traction assembly (400) to rotate, so that when the sliding assembly (300) moves along the first direction (X), it drives the pressure plate (200) to move along the second direction (Y).

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