Vacuum sealed electrically controlled telescoping device

Abstract

The application provides a vacuum sealing electric control telescopic device, which comprises a telescopic mechanism, a driving mechanism and a locking mechanism. The telescopic mechanism comprises a telescopic column sleeve, a telescopic column coaxial with the telescopic column sleeve is arranged in the telescopic column sleeve, and the telescopic column is in sliding fit with the telescopic column sleeve. The locking mechanism comprises a protective cover and a locking assembly. The protective cover is provided with a locking channel coaxial with the telescopic column. The locking assembly comprises a locking movable pressure block, a locking fixed pressure block and a tapered roller bearing. The tapered roller bearing comprises a tapered roller bearing outer ring, a locking ring and a tapered roller. A plurality of locking ring cutting grooves are uniformly arranged on the locking ring. The outer wall of the locking movable pressure block is in sliding fit with the wall of the locking channel. The locking fixed pressure block is fixedly arranged in the locking channel. The outer wall of the locking movable pressure block is in sliding fit with the inner wall of the locking fixed pressure block. The locking ring moves synchronously with the locking movable pressure block. A gas cavity is arranged between the locking movable pressure block, the locking fixed pressure block and the wall of the locking channel. A gas port is arranged on the wall of the protective cover and is in communication with the gas cavity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital assembly of aircraft, in particular to a vacuum sealed electric control telescopic device. BACKGROUND

[0002] The wallboard assembly is the basic structure of the aircraft aerodynamic shape, which has the characteristics of large quantity, large size and weak stiffness, and the assembly quality directly affects the assembly quality of the subsequent fuselage, wing components and general assembly, and indirectly affects the flight safety and service life of the aircraft, which is the basis for ensuring the assembly accuracy of the aircraft.

[0003] At present, the major domestic aircraft manufacturers are in an important transformation stage in the assembly tooling of wallboard assemblies, but there are still a large number of traditional rigid toolings in the form of "one-to-one", which have low modularization, poor reconfigurability, lack of universality, and need to be redesigned and manufactured new rigid toolings with product changes and process improvements, resulting in an increase in time cost, processing cost, storage cost and design cost in the aircraft production process. In addition, the rigid tooling uses analog quantity form of inner type clamping plate to position the wallboard assembly, which has low positioning accuracy and large error accumulation.

[0004] Flexible tooling and digital control technology can effectively solve the above problems. Since the rapid development of Internet of Things technology and computer technology, Western aviation developed countries have taken the lead in exploring the field of flexible assembly technology and pushing it to a climax of development, typical of which include the TorresTool series tooling developed by M.Torres company and the POGO column flexible tooling system of CAN, which are widely used in major aircraft manufacturing companies around the world.

[0005] China is in an important transformation stage in this field, and some flexible assembly toolings for wallboards have been designed and developed, such as the Chinese patent with publication number CN 107775565 A, which discloses a flexible assembly tooling system for aircraft wallboards, which is composed of a mechanical system, a vacuum pneumatic system and a control system, realizes the rapid reconfiguration of the jig form and the positioning and clamping function of the parts, and greatly improves the assembly quality and efficiency of the aircraft.

[0006] The present application designs and invents a vacuum sealed electric control telescopic device with locking function, which can be used as a basic positioning unit of the flexible positioning tooling for wallboards, realizes the rapid reconfiguration of the wallboard positioning array, and can provide stable and reliable clamping force for the wallboard under complex external force, ensuring the assembly quality and efficiency of the wallboard. SUMMARY

[0007] Therefore, the present application aims to provide a vacuum sealed electric control telescopic device as a basic positioning unit which can quickly reconfigure the positioning lattice according to the outer surface of the wall plate, can provide stable and reliable support force for the wall plate under the condition of complex external force, and can improve the positioning accuracy in the telescopic direction, so as to ultimately achieve the purpose of improving the quality and efficiency of aircraft wall plate assembly.

[0008] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0009] The present application provides a vacuum sealed electric control telescopic device, which comprises a telescopic mechanism, a driving mechanism and a locking mechanism.

[0010] The telescopic mechanism comprises a telescopic column sleeve, a telescopic column coaxial with the telescopic column sleeve is arranged in the telescopic column sleeve, and the telescopic column is in sliding fit with the telescopic column sleeve; the driving mechanism is used for driving the telescopic column to move in the telescopic column sleeve; and the locking mechanism is used for locking the telescopic column and limiting the movement of the telescopic column in the telescopic column sleeve.

[0011] The locking mechanism comprises a protective cover and a locking assembly, the protective cover is provided with a locking channel coaxial with the telescopic column, the locking assembly comprises a locking movable pressure block, a locking fixed pressure block and a tapered roller bearing, the tapered roller bearing comprises a tapered roller bearing outer ring, a locking ring and a tapered roller, the tapered roller bearing taper is arranged downward in the locking channel, and the tapered roller bearing outer ring is fixed; a plurality of locking ring cutting grooves are uniformly arranged on the locking ring along the generatrix direction of the locking ring; the outer wall of the locking movable pressure block is in sliding fit with the wall of the locking channel; the locking fixed pressure block is fixedly arranged in the locking channel; the outer wall of the locking movable pressure block is in sliding fit with the inner wall of the locking fixed pressure block; the locking ring moves synchronously with the locking movable pressure block; the gas cavity is arranged between the locking movable pressure block, the locking fixed pressure block and the wall of the locking channel; the gas port is arranged on the wall of the protective cover and is in communication with the gas cavity.

[0012] Further, the locking mechanism further comprises an upper end cover and a lower end cover, the upper end cover and the lower end cover are arranged at the upper end and the lower end of the protective cover respectively, the upper end cover and the lower end cover are respectively provided with a clearance opening for accommodating a cylindrical part, and the clearance opening is coaxial with the locking channel.

[0013] Further, the locking dynamic force spring is arranged in annular and uniform distribution between the upper end cover and the locking movable pressure block, and the locking dynamic force spring is used for applying a pushing force to the locking movable pressure block.

[0014] Further, the sealing ring is arranged between the outer wall of the locking movable pressure block and the wall of the locking channel, the sealing ring is arranged between the outer wall of the locking fixed pressure block and the wall of the locking channel, and the sealing ring is arranged between the outer wall of the locking movable pressure block and the inner wall of the locking fixed pressure block.

[0015] Further, the driving mechanism comprises a driving motor and a mounting seat, wherein the mounting seat is provided with a main synchronous wheel and a slave synchronous wheel driven by a synchronous belt.

[0016] Further, the mounting seat is provided with a tensioner for tensioning the synchronous belt.

[0017] Further, the mounting seat is provided with a mounting groove, wherein an adjusting plate is slidably arranged in the mounting groove, and the tensioner is arranged on the adjusting plate.

[0018] Further, the driving mechanism is provided with a transmission mechanism for transmission between the driving mechanism and the telescopic column.

[0019] Further, the transmission mechanism comprises a ball screw, wherein a screw nut is arranged on the ball screw, the ball screw rotates synchronously with the slave synchronous wheel, and the telescopic column moves synchronously with the screw nut.

[0020] Further, the telescopic column is provided with a receiving cavity, the ball screw is arranged in the receiving cavity, the ball screw is covered with a sealing cover, and a vacuum cavity is arranged between the outer wall of the sealing cover and the wall of the receiving cavity.

[0021] Further, a telescopic column base is arranged between the screw nut and the telescopic column, the telescopic column base is sleeved on the screw nut and moves synchronously with the screw nut.

[0022] Further, the telescopic column base is provided with a vacuum-sealed electrical transition block, the telescopic column base is provided with an electrical hole, the vacuum-sealed electrical transition block is provided with a gas pipe joint mounting hole, the electrical hole is in communication with the vacuum cavity, and the electrical hole is in communication with the gas pipe joint mounting hole.

[0023] Further, the lower end of the screw is provided with a bearing seat, the bearing seat is provided with a thrust ball bearing and at least one deep groove ball bearing, the thrust ball bearing and the deep groove ball bearing are sleeved on the ball screw, the thrust ball bearing is used to apply a thrust force to the shaft shoulder of the screw rod, and the mounting seat is arranged at the lower end of the bearing seat.

[0024] Further, the slave synchronous wheel is sleeved on the ball screw, and the bottom end of the ball screw is provided with a multi-turn absolute encoder.

[0025] Further, the telescopic column sleeve is provided with an electrical protection cover, and the electrical protection cover is provided with a drag chain for fixing electrical lines.

[0026] Further, the telescopic column is provided with a quick-change joint at the upper end, and the quick-change joint is symmetrically provided with a vacuum-sealed electrical connector on both sides.

[0027] The present application has the following beneficial effects:

[0028] Additional advantages, objects, and features of the application will be set forth in part by the description that follows, and in part will become apparent to those skilled in the art upon examination of the following specification or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] To make the objectives, technical solutions and beneficial effects of the present application clearer, the present application provides the following drawings for illustration:

[0030] Figure 1 It is an internal structure diagram of the embodiment of the smooth cylindrical pneumatic locking device in the present application;

[0031] Figure 2 It is a sectional view of the embodiment of the smooth cylindrical pneumatic locking device in the present application;

[0032] Figure 3 It is a schematic diagram of the protective cover in Embodiment 1 of the present application;

[0033] Figure 4 It is a schematic diagram of the locking dynamic pressure block in Embodiment 1 of the present application;

[0034] Figure 5 It is a schematic diagram of the locking static pressure block in Embodiment 1 of the present application;

[0035] Figure 6 It is a schematic diagram of the tapered roller bearing in Embodiment 1 of the present application;

[0036] Figure 7 It is a schematic diagram of the upper end cover in Embodiment 1 of the present application;

[0037] Figure 8 It is a sectional view of the upper end cover in Embodiment 1 of the present application;

[0038] Figure 9 It is a schematic diagram of the lower end cover in Embodiment 1 of the present application;

[0039] Figure 10 It is an internal structure diagram of the embodiment of the vacuum-sealed electrically-controlled telescopic device in the present application;

[0040] Figure 11 It is a sectional view of the embodiment of the vacuum-sealed electrically-controlled telescopic device in the present application;

[0041] Figure 12 It is Figure 10 a local enlarged schematic diagram of A in the middle;

[0042] Figure 13 Figure 1 is a schematic view of the protective cover of the present application; Figure 10 Figure 2 is a schematic view of the partial enlargement of B in Figure 1;

[0043] Figure 14 Figure 3 is a schematic view of the partial enlargement of C in Figure 1; Figure 10 Figure 4 is a schematic view of the partial enlargement of D in Figure 1;

[0044] Figure 15 Figure 5 is a schematic view of the driving mechanism in Example 2 of the present application;

[0045] Figure 16 Figure 6 is a schematic view of the telescopic column base in Example 2 of the present application;

[0046] Figure 17 Figure 7 is a schematic view of the vacuum sealed electrical transition block in Example 2 of the present application.

[0047] BRIEF DESCRIPTION OF DRAWINGS

[0048] Example 1

[0049] 1 - protective cover; 1a - locking channel; 1b - air port; 1c - annular boss; 1d - oil cup; 1e - proximity switch mounting hole; 1f - air pipe joint mounting hole; 2 - locking moving block; 2a - first mounting groove; 3 - locking fixed block; 3a - second mounting groove; 3b - third mounting groove; 4 - tapered roller bearing; 4a - tapered roller bearing outer ring; 4b - locking ring; 4c - tapered roller; 4d - locking ring cutting groove; 5 - air cavity; 6 - upper end cover; 6a - upper end cover main body; 6b - cylindrical boss; 6c - annular groove; 6d - dustproof rubber ring; 7 - lower end cover; 8 - locking power spring; 9 - spring mounting groove; 10 - sealing ring; 11 - linear bearing; 12 - proximity switch; 13 - air pipe joint; 14 - cylindrical piece.

[0050] Example 2

[0051] 15-Telescopic column sleeve; 16-Telescopic column; 17-Drive motor; 18-Mounting base; 18a-Mounting groove; 18b-Adjusting plate; 19-Synchronous belt; 20-Main synchronous pulley; 21-Die synchronous pulley; 22-Tensioner pulley; 23-Ball screw; 24-Limit plate; 25-Screw nut; 26-Sealing cover; 27-Vacuum chamber; 28-Telescopic column base; 28a-First-stage frustum; 28b-Second-stage frustum; 28c-Electrical hole; 28d-Electrical transition block mounting groove; 28e-Cable routing hole; 2 8f - Air pipe hole; 29 - Vacuum-sealed electrical transition block; 29a - Air pipe connector mounting hole; 30 - Bearing housing; 31 - Electrical protective cover; 32 - Cable drag chain; 33 - Electrical connection seat; 34 - Mounting plate; 35 - Upper cable drag chain bracket; 36 - Lower cable drag chain bracket; 37 - Quick-change connector; 38 - Vacuum-sealed electrical connector; 39 - Sealing rubber ring; 40 - Multi-turn absolute encoder; 41 - Encoder bracket; 42 - Drive protective cover; 43 - Locking nut; 44 - Thrust ball bearing; 45 - Deep groove ball bearing. Detailed Implementation

[0052] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0053] Example 1 - Smooth Cylindrical Pneumatic Locking Device

[0054] like Figure 1 and Figure 2 The figures shown are a schematic diagram and a cross-sectional view of the internal structure of the smooth cylindrical pneumatic locking device of this embodiment. The smooth cylindrical pneumatic locking device of this embodiment includes a protective cover 1 and a locking assembly, and the protective cover 1 is provided with a locking channel 1a;

[0055] like Figure 2As shown in the figure, the locking assembly of the embodiment comprises a locking movable pressure block 2, a locking fixed pressure block 3 and a tapered roller bearing 4. In the embodiment, the tapered roller bearing 4 is a customized part, which comprises a tapered roller bearing outer ring 4a, a locking ring 4b and a tapered roller 4c. The tapered roller bearing 4 is arranged in the locking channel la with the tapered opening downward, and the tapered roller bearing outer ring 4a is fixed. The locking ring 4b is uniformly provided with a plurality of locking ring cutting grooves 4d along the generatrix direction. The outer wall of the locking movable pressure block 2 is in sliding fit with the wall of the locking channel la. The locking fixed pressure block 3 is fixedly arranged in the locking channel la. The outer wall of the locking movable pressure block 2 is in sliding fit with the inner wall of the locking fixed pressure block 3. The locking ring 4b moves synchronously with the locking movable pressure block 2. The gas cavity 5 is arranged between the locking movable pressure block 2, the locking fixed pressure block 3 and the wall of the locking channel la. The gas port 1b is arranged on the wall of the protective cover 1, and is in communication with the gas cavity 5. The gas pressure in the gas cavity 5 can be controlled by ventilating the gas cavity 5 through the gas port 1b, so as to control the up-and-down movement of the locking movable pressure block 2. Specifically, in the embodiment, the lower end of the locking movable pressure block 2 is in contact with the upper end of the locking ring 4b, so as to facilitate the locking movable pressure block 2 to exert a pushing force on the locking ring 4b.

[0056] As shown in the figure, Figure 2 As shown in the figure, in the embodiment, the smooth surface cylindrical pneumatic locking device further comprises an upper end cover 6 and a lower end cover 7. The upper end cover 6 and the lower end cover 7 are arranged at the upper and lower ends of the protective cover 1 respectively. The upper end cover 6 and the lower end cover 7 are respectively provided with a clearance port for accommodating the cylindrical part 14, and the clearance port is coaxial with the locking channel la. Figures 7-9 As shown in the figure, in the embodiment, the upper end cover 6 is an annular thin-walled part, which comprises an upper end cover main body 6a and a cylindrical boss 6b arranged coaxially with the upper end cover main body 6a. The upper end cover main body 6a is provided with a plurality of counterbores, and screws pass through the counterbores to fix the upper end cover 6 to the upper end of the protective cover 1. In the embodiment, the inner wall of the upper end cover main body 6a is further provided with an annular groove 6c, and a dustproof rubber ring 6d is arranged in the annular groove 6c. In use, the inner wall of the cylindrical boss 6b is in clearance fit with the cylindrical part 14. The lower end cover 7 is also provided with a plurality of counterbores, and screws pass through the counterbores to fix the lower end cover 7 to the lower end of the protective cover 1.

[0057] As shown in the figure, Figure 2 As shown in the figure, in the embodiment, the upper end cover 6 and the locking movable pressure block 2 are uniformly provided with a locking dynamic spring 8 therebetween. The locking dynamic spring 8 is used to exert a pushing force on the locking movable pressure block 2. Specifically, as shown in the figure, Figures 7-9As shown in the figure, in the embodiment, the bottom surface of the upper end cover 6 and the upper end of the locking dynamic pressure block 2 are uniformly provided with corresponding spring installation grooves 9, and the locking dynamic spring 8 is arranged in the spring installation groove 9, which is used to complete the installation and positioning of the locking dynamic spring 8. In the specific implementation, the size of the spring installation groove 9 should match the size of the locking dynamic spring 8 to prevent the axis from deviating, and the number of the spring installation groove 9 depends on the required locking force. Under the action of the locking dynamic spring 8, the locking dynamic pressure block 2 can slide axially, and the locking ring 4b can move up and down. Under the extrusion action of the tapered roller 4c, the locking ring 4b elastically deforms to realize the locking and opening actions. When the gas port 1b is connected to the gas source, the pressure in the gas cavity 5 exerts a pushing force on the locking dynamic pressure block 2 to offset the force of the locking dynamic spring 8. At this time, the locking ring 4b is in a loosened state. When the gas port 1b is disconnected from the gas source, the locking dynamic spring 8 pushes the locking ring 4b to move downward and drives the locking ring 4b to lock under the action of the tapered roller 4c. The locking mechanism is a normally closed mechanism. When the gas cavity 5 is at atmospheric pressure, the locking dynamic spring 8 provides a downward pushing force for the locking dynamic pressure block 2, the lower end of the locking dynamic pressure block 2 pushes the locking ring 4b downward, and the locking ring 4b elastically deforms inward under the action of the tapered roller 4c, thereby realizing the technical purpose of embracing and locking the cylindrical part 14.

[0058] As shown in the figure, Figure 4 and Figure 5 As shown in the figure, in the embodiment, the outer wall of the locking dynamic pressure block 2 and the wall of the locking channel 1a are provided with a sealing ring 10, the outer wall of the locking dynamic pressure block 3 and the wall of the locking channel 1a are provided with a sealing ring 10, and the outer wall of the locking dynamic pressure block 2 and the inner wall of the locking dynamic pressure block 3 are provided with a sealing ring 10. Specifically, in the embodiment, the outer wall of the locking dynamic pressure block 2 is provided with a first installation groove 2a along the circumference thereof, the outer wall of the locking dynamic pressure block 3 is provided with a second installation groove 3a along the circumference thereof, the inner wall of the locking dynamic pressure block 3 is provided with a third installation groove 3b along the circumference thereof, and the first installation groove 2a, the second installation groove 3a and the third installation groove 3b are provided with a sealing ring 10. By arranging the sealing ring 10 at the above three positions, the gas sealing performance of the gas cavity 5 can be improved.

[0059] As shown in the figure, Figure 2 In the embodiment, an annular boss 1c for limiting the tapered roller bearing 4 is arranged in the locking channel 1a in the radial direction. The tapered roller bearing 4 is prevented from moving axially, so that the position of the tapered roller bearing outer ring 4a remains fixed.

[0060] As shown in the figure, Figure 1 and Figure 2As shown in the figure, in the embodiment, a linear bearing 11 is arranged in the locking channel 1a, which is used to limit the cylindrical part 14 and prevent the axis from deviating. In the embodiment, the linear bearing 11 is fixed through the lower end cover 7. The embodiment also includes an oil cup 1d, which is used to lubricate the linear bearing 11. In use, the outer wall of the cylindrical part 14 is in sliding fit with the inner wall of the linear bearing 11, which can effectively prevent the axis of the cylindrical part 14 from deviating and provide a guiding effect for the cylindrical part 14 and eliminate the lateral play of the cylindrical part 14.

[0061] As shown in the figure, Figure 1 and Figure 2 As shown in the figure, in the embodiment, the smooth cylindrical pneumatic locking device also includes a control source, which includes a proximity switch 12 and a gas pipe joint 13. The sensing area of the proximity switch 12 is located below the locking dynamic pressure block 2 and is used to detect the position of the locking dynamic pressure block 2. The gas pipe joint 13 is connected with the gas port 1b and is used to connect the gas source. Specifically, in the embodiment, the protective cover 1 is provided with a proximity switch mounting hole 1e and a gas pipe joint mounting hole 1f for mounting the proximity switch 12 and the gas pipe joint 13, respectively.

[0062] The working process of the smooth cylindrical pneumatic locking device of the embodiment is as follows:

[0063] Locking process: the system detects that the locking dynamic pressure block 2 is located at the upper end through the proximity switch 12, and the control system issues a gas source cut-off instruction. The locking dynamic spring 8 pushes the locking dynamic pressure block 2 to press the locking ring 4b downward. The locking ring 4b is elastically deformed inwardly under the extrusion of the conical roller 4c, and the locking of the cylindrical part 14 is completed.

[0064] Cancel locking process: the system detects that the locking dynamic pressure block 2 is located at the lower end through the proximity switch 12, and the control system issues a gas source opening instruction. The gas pressure in the gas cavity 5 overcomes the pushing force of the locking dynamic spring 8, so that the locking dynamic pressure block 2 moves upward, the locking ring 4b releases the clamping force on the shaft under the elastic recovery of the locking ring 4b, and the canceling locking work is completed.

[0065] Embodiment 2 - vacuum sealed electric control telescopic device

[0066] As shown in the figure, Figure 10 and Figure 11 are respectively the internal structure diagram and the sectional view of the vacuum sealed electric control telescopic device of the embodiment. The vacuum sealed electric control telescopic device of the embodiment includes a telescopic mechanism, a driving mechanism and a locking mechanism.

[0067] The telescopic mechanism comprises a telescopic column sleeve 15, a telescopic column 16 coaxial with the telescopic column sleeve 15 is arranged in the telescopic column sleeve 15, and the telescopic column 16 is in sliding fit with the telescopic column sleeve 15; the driving mechanism is used for driving the telescopic column 16 to move in the telescopic column sleeve 15; the locking mechanism is used for locking the telescopic column 16 and limiting the movement of the telescopic column 16 in the telescopic column sleeve 15, and in the embodiment, the locking mechanism is the locking mechanism described in the embodiment 1, wherein the locking channel 1a is coaxial with the telescopic column 16, is arranged on the telescopic column sleeve 15, and is used for locking the telescopic column 16 to prevent the telescopic column 16 from moving axially. In the embodiment, the protective cover 1 is arranged on the telescopic column sleeve 15 by bolts or screws.

[0068] In order to drive the telescopic column 16 to move in the telescopic column sleeve 15, the driving mechanism and the transmission mechanism between the driving mechanism and the telescopic column 16 need to be arranged. The driving mechanism and the transmission mechanism in the embodiment are described in detail below.

[0069] As shown in the embodiment, Figure 15 The driving mechanism in the embodiment comprises a driving motor 17 and a mounting seat 18, the driving motor 17 is a servo motor, the mounting seat 18 is provided with a main synchronous wheel 20 and a slave synchronous wheel 21 which are driven by a synchronous belt 19, the main synchronous wheel 20 rotates synchronously with the output shaft of the driving motor 17, the mounting seat 18 is provided with a tensioning wheel 22 for tensioning the synchronous belt 19, the mounting seat 18 is provided with a mounting groove 18a, the mounting groove 18a is provided with an adjusting plate 18b in sliding fit with the mounting groove 18a, and the tensioning wheel 22 is arranged on the adjusting plate 18b. Specifically, in the embodiment, the mounting groove 18a is U-shaped, and the tightness of the synchronous belt 19 can be adjusted by adjusting the position of the adjusting plate 18b in the U-shaped mounting groove 18a.

[0070] As shown in the embodiment, Figure 11 The transmission mechanism in the embodiment comprises a ball screw 23, the top of the ball screw 23 is provided with a limiting disc 24 for limiting the ball screw 23, the ball screw 23 is provided with a screw nut 25, the ball screw 23 rotates synchronously with the slave synchronous wheel 21, and the telescopic column 16 moves synchronously with the screw nut 25.

[0071] As shown in the embodiment, Figure 11 In the embodiment, the telescopic column 16 is provided with a receiving cavity, the ball screw 23 is arranged in the receiving cavity, the ball screw 23 is covered with a sealing cover 26, and a vacuum cavity 27 is arranged between the outer wall of the sealing cover 26 and the wall of the receiving cavity. By arranging the ball screw 23 in the receiving cavity of the telescopic column 16, the total length of the device can be effectively reduced, and the total weight of the device can be reduced. In addition, in the specific implementation, the end of the telescopic column 16 is provided with a suction disc clamp, and the vacuum adsorption force required by the suction disc clamp can be generated by the vacuum cavity 27.

[0072] As shown in the embodiment, Figure 11 andFigure 13 In the embodiment, the telescopic column base 28 is provided between the screw nut 25 and the telescopic column 16, the sealing cover 26 is fixed to the telescopic column base 28 through a flange, the telescopic column base 28 is sleeved on the screw nut 25 and moves synchronously with the screw nut 25. Specifically, the telescopic column base 28 of the embodiment is a two-stage circular table type component, a first-stage circular table 28a is located below a second-stage circular table 28b and has a larger diameter than the second-stage circular table 28b, a through hole is provided in the axial direction of the first-stage circular table 28a, and the first-stage circular table 28a is sleeved on the outer wall of the screw nut 25 through the through hole. The lower end of the telescopic column 16 is sleeved on the outer wall of the second-stage circular table 28b, and the end face of the lower end of the telescopic column 16 is in contact with the table surface of the first-stage circular table 28a. A step is also provided on the screw nut 25 for applying a pushing force to the first-stage circular table 28a. Thus, the table surface of the first-stage circular table 28a facilitates the application of a pushing force to the telescopic column 16 and facilitates the synchronous movement of the telescopic column 16 with the screw nut 25.

[0073] As shown in Figure 11 , Figure 16 and Figure 17 , in the embodiment, a vacuum-sealed electrical transition block 29 is provided on the telescopic column base 28, an electrical hole 28c is provided on the telescopic column base 28, a gas pipe joint mounting hole 29a is provided on the vacuum-sealed electrical transition block 29, the electrical hole 28c is in communication with the vacuum cavity 27, the electrical hole 28c is in communication with the gas pipe joint mounting hole 29a, a bearing seat 30 is provided at the lower end of the ball screw 23, a thrust ball bearing 44 and two deep groove ball bearings 45 are provided in the bearing seat 30, the number of the deep groove ball bearings 45 can be set according to requirements, the thrust ball bearing 44 and the deep groove ball bearings 45 are sleeved on the ball screw 23, the thrust ball bearing 44 is used to apply a pushing force to the shaft shoulder of the ball screw 23, in the embodiment, the thrust ball bearing 44 and the deep groove ball bearings 45 are limited by a locking nut 43, and the mounting seat 18 is mounted at the lower end of the bearing seat 30. In the embodiment, the mounting seat 18 is mounted at the lower end of the bearing seat 30 through screws, facilitating the disassembly, maintenance or replacement of parts. Specifically, in the embodiment, an electrical transition block mounting groove 28d is provided on the side wall of the first-stage circular table 28a of the telescopic column base 28, the vacuum-sealed electrical transition block 29 is fixed in the electrical transition block mounting groove 28d through bolts or screws, a wiring hole 28e and a gas pipe hole 28f are provided on the electrical transition block mounting groove 28d, the wiring hole 28e and the gas pipe hole 28f are both in communication with the electrical hole 28c, corresponding wiring holes and gas pipe joint holes are provided on the vacuum-sealed electrical transition block 29. In this way, the power supply line and the gas pipe can be shunted to the wiring hole 28e and the gas pipe hole 28f through the electrical hole 28c, and the vacuum cavity 27 can be in communication with the vacuum pump through the gas pipe.

[0074] As shown in Figure 11 and Figure 15As shown in the figure, the slave synchronization wheel 21 of the embodiment is sleeved on the ball screw 23, and the two can be driven through key connection or jackscrew connection. The bottom end of the ball screw 23 is provided with a multi-turn absolute value encoder 40. In the embodiment, the multi-turn absolute value encoder 40 is fixed on the mounting seat 18 through an encoder support 41. The multi-turn absolute value encoder 40 and the servo motor can realize precise full-closed-loop control of the position of the telescopic column 16.

[0075] As shown in the figure, Figure 11 As shown in the figure, in the embodiment, the outer wall of the telescopic column sleeve 15 is provided with an electrical protective cover 31. The electrical protective cover 31 is provided with a drag chain 32 for fixing electrical lines. The electrical protective cover 31 is provided with an electrical connection seat 33. Specifically, the electrical protective cover 31 is provided with a mounting plate 34. The drag chain 32 is mounted on the mounting plate 34 of the electrical protective cover 31 through an upper drag chain support 35 and a lower drag chain support 36, and realizes quick plugging of the air pipe and the line through the electrical connection seat 33.

[0076] As shown in the figure, Figure 10 and Figure 11 As shown in the figure, in the embodiment, the upper end of the telescopic column 16 is provided with a quick-change joint 37. The quick-change joint 37 is symmetrically provided with a vacuum sealed electrical connector 38 on both sides. Specifically, in the embodiment, the quick-change joint 37 is arranged at the upper end of the telescopic column 16 through threaded connection. The inner wall of the quick-change joint 37 is provided with a sealing rubber ring 39.

[0077] The working process of the vacuum sealed electrical telescopic device of the embodiment is as follows:

[0078] S1, obtaining the theoretical motion position of the telescopic column 16: according to the positioning requirements of different outer wall plates, a positioning point array composed of multiple telescopic devices is constructed, and the required theoretical telescopic amount of each telescopic column 16 is calculated;

[0079] S2, the control system sends a motion instruction: the control system sends the telescopic amount array calculated to the corresponding servo mechanism of the telescopic device through the motion control card or the embedded PC, and triggers the servo motor to move;

[0080] S3, the main and slave synchronization wheels 21 and the ball screw 23 assembly drive: the output shaft of the servo motor drives the main synchronization wheel 20 to rotate through a flat key, and drives the slave synchronization wheel 21 at the bottom end of the ball screw 23 to rotate through a synchronous belt 19. The slave synchronization wheel 21 drives the screw to rotate, and then the screw nut 25 and the telescopic column 16 produce translational motion;

[0081] S4, full-closed-loop servo control: the multi-turn absolute value encoder 40 at the end of the ball screw 23 feeds back the absolute position of the telescopic column 16 in real time, so as to ensure that the telescopic column 16 moves to the instructed position;

[0082] S5, the locking mechanism embraces the telescopic column 16: the control system cuts off the locking mechanism gas source, under the action of the locking power spring 8, the locking dynamic pressure block 2 pushes the locking ring 4b downward, realizes the telescopic column 16 embracing locking function, the locking dynamic pressure block 2 triggers the proximity switch 12, and the locking state is fed back to the control system;

[0083] S6, install the wallboard: install the wallboard to be assembled through the auxiliary positioning hole on the telescopic column 16 adsorption point array;

[0084] S7, open the vacuum system: open the telescopic column 16 vacuum system, the telescopic column 16 end generates vacuum adsorption effect on the wallboard to be assembled, and the end laser displacement sensor detects that the relative distance between the wallboard and the laser displacement sensor is qualified, and the wallboard positioning is completed.

[0085] The above-mentioned embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. The equivalent replacement or transformation of the skilled in the art on the basis of the present application is within the protection scope of the present application. The protection scope of the present application is subject to the claims.

Claims

1. A vacuum sealed electrically controlled telescoping device, characterized by: The telescopic mechanism, the driving mechanism and the locking mechanism are included. The telescopic mechanism includes a telescopic column sleeve and a telescopic column coaxial with the telescopic column sleeve, and the telescopic column is in sliding fit with the telescopic column sleeve; the driving mechanism is used for driving the telescopic column to move in the telescopic column sleeve; and the locking mechanism is used for locking the telescopic column and limiting the movement of the telescopic column in the telescopic column sleeve. The locking mechanism includes a protective cover and a locking assembly, the protective cover is provided with a locking channel coaxial with the telescopic column, and the locking assembly includes a locking movable block, a locking fixed block and a tapered roller bearing, the tapered roller bearing includes a tapered roller bearing outer ring, a locking ring and a tapered roller, the tapered roller bearing cone is arranged in the locking channel with the tapered roller bearing outer ring fixed, the locking ring is uniformly provided with a plurality of locking ring cutting grooves along the generatrix direction, the locking movable block outer wall is in sliding fit with the locking channel wall, the locking fixed block is fixedly arranged in the locking channel, the locking movable block outer wall is in sliding fit with the locking fixed block inner wall, the locking ring moves synchronously with the locking movable block, the locking movable block, the locking fixed block and the locking channel wall are provided with a gas cavity, the protective cover wall is provided with a gas port, and the gas port is in communication with the gas cavity. The driving mechanism includes a driving motor and a mounting seat, the mounting seat is provided with a main synchronous wheel and a slave synchronous wheel driven by a synchronous belt, the main synchronous wheel rotates synchronously with the output shaft of the driving motor, the mounting seat is provided with a tensioning wheel for tensioning the synchronous belt, and the mounting seat is provided with a mounting groove, the mounting groove is provided with an adjusting plate in sliding fit with the mounting groove, and the tensioning wheel is arranged on the adjusting plate. The driving mechanism and the telescopic column are provided with a transmission mechanism for transmission, the transmission mechanism includes a ball screw, the ball screw is provided with a screw nut, the ball screw rotates synchronously with the slave synchronous wheel, the telescopic column moves synchronously with the screw nut, the telescopic column is provided with a containing cavity, the ball screw is arranged in the containing cavity, the ball screw is covered with a sealing cover, and a vacuum cavity is formed between the sealing cover outer wall and the containing cavity wall.

2. The vacuum-sealed electrically controlled telescoping device of claim 1, wherein: The locking mechanism further includes an upper end cover and a lower end cover, the upper end cover and the lower end cover are arranged at the upper end and the lower end of the protective cover respectively, the upper end cover and the lower end cover are respectively provided with a clearance for accommodating a cylindrical part, and the clearance is coaxial with the locking channel.

3. The vacuum-sealed electrically controlled telescoping device of claim 2, wherein: Locking power springs are uniformly arranged between the upper end cover and the locking movable block in an annular shape, and the locking power springs are used for applying a pushing force to the locking movable block.

4. The vacuum sealed electrically controlled telescoping device of claim 1, wherein: Sealing rings are arranged between the locking movable block outer wall and the locking channel wall, between the locking fixed block outer wall and the locking channel wall, and between the locking movable block outer wall and the locking fixed block inner wall.

5. The vacuum sealed electrically controlled telescoping device of claim 1, wherein: A telescopic column base is arranged between the screw nut and the telescopic column, the telescopic column base is sleeved on the screw nut and moves synchronously with the screw nut.

6. The vacuum-sealed electrically controlled telescoping device of claim 5, wherein: The telescopic column base is provided with a vacuum sealed electrical transition block, the telescopic column base is provided with an electrical hole, the vacuum sealed electrical transition block is provided with a gas pipe joint mounting hole, the electrical hole is communicated with the vacuum cavity, and the electrical hole is communicated with the gas pipe joint mounting hole.

7. The vacuum sealed electrically controlled telescoping device of claim 1, wherein: The lower end of the lead screw is provided with a bearing seat, the bearing seat is provided with a thrust ball bearing and at least one deep groove ball bearing, the thrust ball bearing and the deep groove ball bearing are sleeved on the ball screw, the thrust ball bearing is used for applying a thrust force to the shaft shoulder of the ball screw, and the mounting seat is mounted at the lower end of the bearing seat.

8. The vacuum-sealed electrically controlled telescoping device of any one of claims 1 or 5-7, wherein: The slave synchronization wheel is sleeved on the ball screw, and the bottom end of the ball screw is provided with a multi-turn absolute value encoder.

9. The vacuum sealed electrically controlled telescoping device of claim 1, wherein: The telescopic column sleeve outer wall is provided with an electrical protection cover, the electrical protection cover is provided with a drag chain for fixing electrical lines, and the electrical protection cover is provided with an electrical connection seat.

10. The vacuum-sealed electrically controlled telescoping device of claim 1, wherein: The telescopic column upper end is provided with a quick change joint, and the quick change joint is symmetrically provided with a vacuum sealed electrical connector on both sides.

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