Rapid splicing device for grating expansion blocks

Abstract

The invention relates to the technical field of grating splicing, and discloses a grating expansion block rapid splicing device, which comprises a splicing base, a splicing platform, a splicing platform and a splicing platform, and is characterized in that two parallel and aligned radial transverse chutes are formed in the splicing base along the width direction; the two groups of crossed roller guide rails are respectively arranged in the two radial transverse chutes in a sliding manner and are distributed along the length direction of the splicing base; the two bearing plates are respectively arranged on the parallel guide rails on the upper layers of the two groups of crossed roller guide rails in a sliding manner; the first micro-drive sliding structure is arranged between the crossed roller guide rail and the radial transverse sliding groove; the second micro-drive sliding structure is arranged between the bearing plate and the crossed roller guide rail; the device has the advantages of two-dimensional error compensation, stress-free self-adaptive clamping and the like, and is suitable for grating expansion splicing in the fields of precision measurement, optical equipment and industrial automation, and the device is suitable for large-scale production, large-scale production and large-scale production. And the working efficiency and the splicing quality are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grating splicing, in particular to a kind of grating extension block fast splicing device. BACKGROUND

[0002] Grating extension block is a modular extension component designed based on grating element principle, its core is through the splicing combination of multiple grating units, expand the measurement range, coverage area or functional dimension of grating system, widely used in precision measuring instrument (such as three coordinate measuring machine, laser interferometer), optical equipment (such as photolithography machine, infrared imaging system) and positioning mechanism of industrial automation production line.In practical application, single specification grating block is limited by manufacturing process, transportation cost and installation space, often cannot meet the demand of long-stroke measurement, wide positioning of large equipment;At the same time, the size and shape accuracy of grating block are different in different scenes, different specifications of grating unit are combined flexibly to realize the expansion of measurement range, improve the adaptability of equipment or convenient maintenance, so the efficient and accurate splicing of grating extension block becomes the key link to ensure the performance of related equipment.

[0003] In the existing grating splicing technology, there are problems such as clamping damage, insufficient positioning accuracy, poor adaptability and low splicing efficiency: the traditional clamping mechanism usually uses rigid clamps to fix the grating block, and the clamping force is difficult to control accurately, which may cause scratches on the surface of the grating block and stress concentration inside, thereby affecting the optical performance and measurement accuracy of the grating;During splicing, there is no effective self-adaptive adjustment mechanism, which cannot be compatible with grating blocks of different shapes and sizes, and the radial misalignment and axial gap during splicing cannot be accurately eliminated, resulting in poor consistency of the overall grating system after splicing, and problems such as measurement data drift and positioning deviation;Although some devices are provided with simple displacement adjustment structure, the adjustment dimension is single and the response speed is slow, which cannot realize micron-level accurate compensation, and cannot meet the strict requirements of high-end equipment on splicing accuracy, resulting in the decline of equipment running stability, the extension of debugging period, and even the influence on the production quality of downstream products, therefore we propose a kind of grating extension block fast splicing device. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application provides a kind of grating extension block fast splicing device, solve the above problems.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a kind of grating extension block fast splicing device, comprising: The splicing base is rectangular plate, two parallel radial transverse grooves are opened in the splicing base along the width direction, and the two radial transverse grooves are symmetrical about the width center line of the splicing base; Two groups of cross-roller guides are respectively slidably arranged in two radial transverse sliding grooves and are distributed along the length direction of the spliced base, and the two groups of cross-roller guides are located on the length center line of the spliced base and are symmetrical to each other, and the cross-roller guides and the radial transverse sliding grooves are in a cross shape; Two bearing plates are respectively slidably arranged on the parallel rails on the upper layer of the two groups of cross-roller guides, and a boss is fixedly arranged on the top of the bearing plate for placing the grating block; A micro-drive sliding structure one is arranged between the cross-roller guide and the radial transverse sliding groove, and a micro-drive sliding structure two is arranged between the bearing plate and the cross-roller guide, the micro-drive sliding structure one and the micro-drive sliding structure two constitute a double-dimension displacement error compensation mechanism, the components in the micro-drive sliding structure one and the micro-drive sliding structure two are the same, the micro-drive sliding structure one enables the cross-roller guide and the bearing plate to have a horizontal displacement degree of freedom in the radial transverse sliding groove, and the micro-drive sliding structure two enables the bearing plate and the grating block to have a horizontal displacement degree of freedom on the cross-roller guide; A plurality of adaptive flexible jaw groups are arranged on both sides of the boss on the bearing plate, and the adaptive flexible jaw groups on each side are not less than two groups, the adaptive flexible jaw groups are composed of a micro-pressure clamping group and an intelligent metamaterial piece, and are used for stress-free and adaptive grating blocks of different shapes; The connection between the cross-roller guide and the bearing plate is further provided with a quick mounting structure for replacing bearing plates of different specifications to adapt to grating blocks of different sizes; Further comprising: a central control module for driving the device to run and a power module for supplying power to electrical elements in the device.

[0006] Preferably, the micro-pressure clamping group in the adaptive flexible jaw group comprises a base column piece, a pressure jaw plate, an SMA wire three and an elastic sheet piece, a plurality of base column pieces are fixedly installed on both sides of the boss on the bearing plate and are distributed transversely and equidistantly, and the adaptive flexible jaw groups on both sides of the bearing plate are symmetrical to each other; An open slot is formed in the top end of the base column piece, and an inclined pressure jaw plate is hinged in the open slot of the base column piece, the pressure jaw plate is divided into a high side section and a low side section with the hinge as a separation point, and the high side section extends above the boss; A plurality of SMA wires three are fixedly connected between the bottom of the high side section of the pressure jaw plate and the bottom end of the base column piece, and an elastic sheet piece is hinged between the bottom of the low side section of the pressure jaw plate and the bottom end of the base column piece.

[0007] Preferably, the end of the high side section of the pressure jaw plate is in an upwardly curved arc shape; The connection between the pressure jaw plate and the SMA wire three is located between the base column piece and the side surface of the boss; The SMA wire three and the elastic sheet piece are in an inclined shape with the top ends meeting and separating, and the elastic sheet piece is in a continuous circular arc shape.

[0008] Preferably, the intelligent variable material in the adaptive flexible gripper group comprises an MRE pad and an electromagnet, the MRE pad is fixedly installed at the bottom of the high side section of the pressure jaw plate for abutting with the grating block, the base material of the MRE pad is silicone rubber, and carbonyl iron powder is doped in the silicone rubber; The electromagnet is embeddedly installed in the pressure jaw plate and located above the MRE pad.

[0009] Preferably, the micro-drive sliding structure one comprises a sliding block one, a limiting rod one, an SMA wire one and a spring piece one, each of the intermediate positions of the radial transverse sliding grooves is slidably connected with the sliding block one, and the top end of each sliding block one is fixedly connected with the intermediate position of the bottom of each group of cross roller guide rails. The limiting rod one is fixedly installed at both sides of the radial transverse sliding groove, each group of sliding blocks one is slidably sleeved with the two limiting rods one in each radial transverse sliding groove, and a plurality of SMA wires one and spring pieces one are fixedly connected between the two sides of the sliding block one and the inner walls of the two ends of the radial transverse sliding groove.

[0010] Preferably, the SMA wires one and the spring pieces one in the two radial transverse sliding grooves are distributed in a central symmetrical manner.

[0011] Preferably, the micro-drive sliding structure two comprises an axial transverse sliding groove, a limiting rod two, a sliding block two, an SMA wire two and a spring piece two, the top of the parallel guide rail of the upper layer of the two groups of cross roller guide rails is provided with the axial transverse sliding groove along the length direction. The intermediate position of the axial transverse sliding groove is slidably connected with the sliding block two, and the top end of the sliding block two protrudes the top end of the cross roller guide rail. The limiting rod two is fixedly installed at both sides of the axial transverse sliding groove, each group of axial transverse sliding grooves is slidably sleeved with the two limiting rods two in each axial transverse sliding groove, and a plurality of SMA wires two and spring pieces two are fixedly connected between the two sides of the sliding block two and the inner walls of the two ends of the axial transverse sliding groove.

[0012] Preferably, the SMA wires two and the spring pieces two in the two groups of cross roller guide rails are distributed in a symmetrical manner, and the SMA wires two are located on the side where the two groups of cross roller guide rails are close to each other.

[0013] Preferably, the quick-mounting structure comprises a locking groove, a plug rod piece, a pulling piece, a spring piece three and a locking block, the top region of the cross roller guide rail, on which the sliding block two protrudes, is provided with an open locking groove, and the bottom end of the bearing plate is fixedly installed with a locking block matched with the locking groove. The two bearing plates are adaptively connected through the locking blocks at the bottom ends and the locking grooves provided in the two sliding blocks two. The two sides of the clamping groove are slidably connected with the inserting rod, the two sides of the clamping block are provided with the matching inserting hole for the end of the inserting rod, the end of the two inserting rods away from each other is fixedly connected with the pulling piece, the pulling piece is perpendicular to the inserting rod, and the two sides of the pulling piece are fixedly connected with the spring three located at the two sides of the inserting rod.

[0014] Preferably, the clamping groove and the clamping block are inverted T-shaped, and the clamping block is respectively arranged at the middle of the bottom side of the two bearing plates away from each other.

[0015] Compared with the prior art, the present application provides a grating expansion block fast splicing device, which has the following advantages: High splicing precision: the double-dimension displacement error compensation mechanism can eliminate the small gap and misalignment in the radial and axial directions, and realize the precise splicing of the grating expansion block without gap and offset, thereby effectively ensuring the splicing position precision.

[0016] Non-damage clamping and self-adaptive: the self-adaptive flexible clamping jaw group is combined with the micro-pressure clamping group and the intelligent metamaterial piece, which can realize micro-pressure clamping through the self-adaptive deformation and elastic buffering of the mechanical structure, and can tightly fit the surface of the grating block of different shapes under the dynamic adjustment of the rigidity of the MRE pad in the magnetic field, thereby avoiding damage to the grating block due to clamping or shape difference, and having excellent adaptability.

[0017] Good universality and expansibility: the quick mounting structure supports the quick disassembly and assembly of the bearing plate, different specifications of the bearing plate can be conveniently replaced to adapt to different sizes of the grating block, and the modular design of the device also facilitates the expansion or adjustment according to actual needs, thereby greatly improving the application range. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present application; Figure 2 It is a schematic diagram of the connection between the bearing plate and the cross roller guide of the present application; Figure 3 It is a schematic diagram of the cross roller guide structure of the present application; Figure 4 It is Figure 3 It is a local enlarged schematic diagram of A in the figure; Figure 5 It is a schematic diagram of the second sliding block of the present application; Figure 6 It is a schematic diagram of the connection between the bearing plate and the second sliding block of the present application; Figure 7 It is a schematic diagram of the bearing plate structure of the present application; Figure 8 It is Figure 7 It is a local enlarged schematic diagram of B in the figure.

[0019] In the figure: 1, splicing base; 2, radial transverse sliding groove; 3, cross roller guide; 4, bearing plate; 5, sliding block one; 6, limiting rod one; 7, SMA wire one; 8, spring piece one; 9, self-adaptive flexible jaw group; 10, axial transverse sliding groove; 11, limiting rod two; 12, sliding block two; 13, SMA wire two; 14, spring piece two; 15, locking groove; 16, plug rod; 17, pulling piece; 18, spring piece three; 19, locking block; 20, base column; 21, pressing jaw plate; 22, SMA wire three; 23, elastic sheet; 24, MRE pad. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0021] Please refer to Figures 1-8 A grating expansion block fast splicing device comprises: The splicing base 1 is in the shape of a rectangular plate. Two parallel radial transverse sliding grooves 2 are formed in the splicing base 1 along the width direction, and the two radial transverse sliding grooves 2 are symmetric about the width center line of the splicing base 1. Two groups of cross roller guides 3 are respectively slidably arranged in the two radial transverse sliding grooves 2 and distributed along the length direction of the splicing base 1. The two groups of cross roller guides 3 are both located on the length center line of the splicing base 1 and symmetric to each other. The cross roller guide 3 and the radial transverse sliding groove 2 are in the shape of a cross. Two bearing plates 4 are respectively slidably arranged on the parallel rails of the upper layer of the two groups of cross roller guides 3. The top of the bearing plate 4 is fixedly provided with a boss for placing a grating block. A micro-drive sliding structure one is arranged between the cross roller guide 3 and the radial transverse sliding groove 2, and a micro-drive sliding structure two is arranged between the bearing plate 4 and the cross roller guide 3. The micro-drive sliding structure one and the micro-drive sliding structure two constitute a double-dimension displacement error compensation mechanism. The components in the micro-drive sliding structure one and the micro-drive sliding structure two are the same. The micro-drive sliding structure one enables the cross roller guide 3 and the bearing plate 4 to have a horizontal displacement degree of freedom in the radial transverse sliding groove 2. The micro-drive sliding structure two enables the bearing plate 4 and the grating block to have a horizontal displacement degree of freedom on the cross roller guide 3. A plurality of self-adaptive flexible jaw groups 9 are arranged on both sides of the boss of the bearing plate 4. Each side of the self-adaptive flexible jaw group 9 is not less than two groups. The self-adaptive flexible jaw group 9 is composed of a micro-pressure clamping group and an intelligent metamaterial piece, and is used for stress-free and self-adaptive grating blocks of different shapes. The quick mounting structure is arranged at the joint of the cross roller guide 3 and the bearing plate 4, and is used for replacing the bearing plate 4 of different specifications to adapt to the grating blocks of different sizes.

[0022] Further, the micro-pressure clamping group in the adaptive flexible clamping jaw group 9 comprises a base column 20, a pressure jaw plate 21, an SMA wire three 22 and an elastic sheet 23. The base columns 20 are fixedly installed on both sides of the boss of the bearing plate 4 and are symmetrically arranged on the bearing plate 4. The top end of the base column 20 is provided with an open slot, and the inclined pressure jaw plate 21 is hinged in the open slot of the base column 20. The pressure jaw plate 21 is divided into a high side section and a low side section by the hinge point, and the high side section extends above the boss. A plurality of SMA wire threes 22 are fixedly connected between the bottom of the high side section of the pressure jaw plate 21 and the bottom end of the base column 20, and an elastic sheet 23 is hinged between the bottom of the low side section of the pressure jaw plate 21 and the bottom end of the base column 20. The base column 20 serves as a fixed support base of the clamping group, and the open slot at the top end of the base column 20 provides a stable hinge support point for the pressure jaw plate 21, ensuring the coaxiality of the overturning movement of the pressure jaw plate 21. The pressure jaw plate 21 is initially in an inclined state, and the high side section naturally hangs above the boss, leaving a space for placing the grating block. The low side section is hinged to the bottom end of the base column 20 through the elastic sheet 23, forming an initial support. When the SMA wire three 22 is energized and shrinks, the tension directly acts on the bottom of the high side section of the pressure jaw plate 21, driving the pressure jaw plate 21 to overturn around the hinge point in the direction of the boss. At this time, the low side section synchronously extrudes the elastic sheet 23 downward, causing the elastic sheet 23 to bend and deform and accumulate elastic potential energy. The base columns 20 and the pressure jaw plate 21 are uniformly distributed in the transverse direction, and can form uniformly distributed clamping points on both sides of the grating block, avoiding local stress concentration. The adaptive flexible clamping jaw groups 9 symmetrically arranged on both sides can form opposite clamping forces, ensuring the center positioning accuracy of the grating block on the bearing plate 4. The structure realizes flexible adjustment of clamping force through the linkage of the SMA wire three 22 driving and the elastic sheet 23 buffering, which not only ensures the stable fixation of the grating block, but also avoids damage caused by rigid clamping.

[0023] Further, the end of the high side section of the clamping jaw plate 21 is designed as an upward curved arc shape; the connection between the clamping jaw plate 21 and the third SMA wire 22 is located between the base column part 20 and the boss side surface; the third SMA wire 22 and the elastic sheet part 23 are arranged in an inclined shape with the top ends separated from each other, and the elastic sheet part 23 is designed in a continuous circular arc shape; the upward curved arc shape design of the end of the high side section of the clamping jaw plate 21 plays a guiding role in the process of placing the grating block, can guide the grating block to smoothly enter the clamping area, and at the same time avoid scratching the surface of the grating block by sharp edges; the curved arc structure can also increase the contact area with the grating block and reduce the local pressure. The connection position of the third SMA wire 22 is between the base column part 20 and the boss side surface, so as to avoid the third SMA wire 22 from contacting the boss and the grating plate. The inclined layout of the top ends of the third SMA wire 22 and the elastic sheet part 23 makes the forces of the two act on different stress points of the clamping jaw plate 21, so as to form a moment balance.

[0024] Further, the intelligent metamaterial part in the adaptive flexible clamping jaw group 9 includes an MRE pad 24 and an electromagnet. The MRE pad 24 is fixedly installed at the bottom of the high side section of the clamping jaw plate 21 for being attached to the grating block. The base material of the MRE pad 24 is silicone rubber, and carbonyl iron powder is doped inside. The electromagnet is embeddedly installed in the clamping jaw plate 21 and located above the MRE pad 24. The MRE pad 24 takes silicone rubber as the base material and has good flexibility and attachment by itself. The MRE pad 24 cooperates with the upward curved arc shape design of the end of the high side section of the clamping jaw plate 21 to preliminarily adapt to the small concave-convex on the surface of the grating block. The doped carbonyl iron powder is a magnetic response medium. When the electromagnet is powered on, a uniform magnetic field is formed in the area of the MRE pad 24, so that the carbonyl iron powder is orderly arranged along the magnetic field direction, thereby improving the overall rigidity of the MRE pad 24 and realizing the dynamic switching of flexible attachment and rigid fixation. At the same time, this layout makes the attachment surface of the MRE pad 24 and the grating block not be interfered by the electromagnet, so as to ensure the flatness of the contact. When the surface shape of the grating block is irregular, the MRE pad 24 can attach the surface contour by its flexibility in the unpowered state, and the rigidity is improved after being powered on, so as to stably fix the grating block in the attached position. This can not only avoid the stress concentration of the traditional rigid clamping, but also solve the problem of unstable fixation of the pure flexible clamping. After power-off, the MRE pad 24 restores flexibility, so that the grating block can be easily placed and taken, and the surface of the grating block will not be adhered or damaged due to the residual rigidity.

[0025] Further, the micro-drive sliding structure one includes the slider one 5, the limiting rod one 6, the SMA wire one 7 and the spring piece one 8. The slider one 5 is slidingly connected in the middle of each radial transverse sliding groove 2, and the top end of each slider one 5 is fixedly connected to the middle of the bottom of each set of cross roller guide 3. The limiting rod one 6 is fixedly installed on both sides of the radial transverse sliding groove 2, and each set of slider one 5 is slidingly sleeved with the two limiting rods one 6 in each radial transverse sliding groove 2. The SMA wire one 7 and the spring piece one 8 are fixedly connected between the two sides of the slider one 5 and the inner walls of the two ends of the radial transverse sliding groove 2, respectively. The distribution of the SMA wire one 7 and the spring piece one 8 in the two radial transverse sliding grooves 2 is centrally symmetric. The slider one 5 serves as the connecting carrier of the cross roller guide 3 and the radial transverse sliding groove 2, and is slidingly connected to the radial transverse sliding groove 2 at the bottom and fixedly connected to the middle of the bottom of the cross roller guide 3 at the top, which can ensure that the movement trajectory of the cross roller guide 3 is completely consistent with the radial transverse sliding groove 2, avoiding deviation or inclination. The two limiting rods one 6 pass through the slider one 5 in parallel, forming bidirectional guiding constraint, limiting the slider one 5 to slide only in the length direction of the radial transverse sliding groove 2, preventing the rotation or jamming of the slider one 5 during movement and ensuring the straightness of radial displacement. The plurality of SMA wires one 7 are arranged in parallel, which can provide sufficient contraction tension to ensure that the slider one 5 can smoothly move the cross roller guide 3 and the bearing plate 4. The corresponding spring piece one 8 provides stable resetting force for the slider one 5, forming a closed-loop motion mechanism of contraction drive and elastic reset. When the SMA wire one 7 is contracted by being electrified, the slider one 5 is pulled to move in the target direction, and the spring piece one 8 is stretched and accumulates elastic potential energy. When the SMA wire one 7 is cooled after being de-energized, the spring piece one 8 releases potential energy to push the slider one 5 to reset accurately, realizing controllable adjustment of radial displacement. The structure combines mechanical limiting and flexible driving, which not only ensures the accuracy of radial displacement, but also improves the stability and reliability of movement, providing accurate execution basis for radial misalignment correction.

[0026] Further, the micro-drive sliding structure two includes an axial transverse sliding groove 10, a limiting rod two 11, a sliding block two 12, an SMA wire two 13 and a spring piece two 14, the top of the parallel guide rail of the upper layer of the two groups of cross roller guides 3 is provided with an axial transverse sliding groove 10 in the length direction; the middle of the axial transverse sliding groove 10 is slidably connected with the sliding block two 12, and the top end of the sliding block two 12 protrudes from the top end of the cross roller guide 3; the limiting rod two 11 is fixedly installed on both sides of the axial transverse sliding groove 10, and each group of axial transverse sliding grooves 10 is slidably connected with the two limiting rods two 11 in each group of axial transverse sliding grooves 10, and a plurality of SMA wires two 13 and spring pieces two 14 are fixedly connected between the two sides of the sliding block two 12 and the inner walls of the two ends of the axial transverse sliding groove 10, respectively; the distribution of the SMA wire two 13 and the spring piece two 14 in the two groups of cross roller guides 3 is symmetrical, and the SMA wire two 13 is located on the side where the two groups of cross roller guides 3 are close to each other; the axial transverse sliding groove 10 is provided in the length direction of the upper layer guide rail of the cross roller guide 3, and the extension direction is consistent with the axial direction of the grating block splicing, so as to provide the sliding block two 12 with accurate axial movement space. The design that the top end of the sliding block two 12 protrudes from the cross roller guide 3 facilitates the stable connection with the clamping block 19 at the bottom of the bearing plate 4, ensures that the axial displacement of the sliding block two 12 can be directly transmitted to the bearing plate 4 and the grating block, and realizes the direct adjustment of the axial gap. The two limiting rods two 11 guide the sliding block two 12 in two directions, so that the sliding block two 12 can only slide in the axial direction, avoiding the transverse deviation or rotation of the sliding block two 12 during movement, and ensuring the accuracy of the axial displacement. The plurality of SMA wires two 13 are arranged in parallel, can realize micro shrinkage through low-voltage power supply, and meet the demand of micron-level adjustment of the axial gap; the spring piece two 14 and the SMA wire two 13 are located on the two sides of the sliding block two 12, respectively, forming a movement mechanism of “shrinkage driving + elastic resetting”: when the SMA wire two 13 is powered and shrinks, the sliding block two 12 is pulled to move towards the grating block on the opposite side, reducing the axial gap; after the SMA wire two 13 is powered off, the spring piece two 14 releases the elastic potential energy and pushes the sliding block two 12 to reset, increasing the axial gap. The design precision and response speed of the structure ensure the timeliness and accuracy of the adjustment of the axial gap, effectively making up for the axial error in the preliminary splicing stage. The symmetrical distribution of the SMA wire two 13 and the spring piece two 14 in the two groups of cross roller guides 3 ensures the synchronization of the axial movement of the two bearing plates 4, avoiding the inclination of the grating block or the misalignment of the splicing surface caused by unilateral adjustment. The SMA wire two 13 is located on the side where the two groups of cross roller guides 3 are close to each other, shortening the effective stroke of the SMA wire two 13, making the axial displacement adjustment of the sliding block two 12 more sensitive, and a small amount of shrinkage can realize accurate compensation of the axial gap; at the same time, this layout makes the SMA wire two 13 directly pull the sliding block two 12 to move towards the splicing center when shrinking, the force transmission path is shorter, energy loss is reduced, and adjustment efficiency is improved.The symmetrically distributed spring member 214 can provide uniform reset force for the two sliding blocks 212 when the SMA wire 213 is powered off, ensure the smooth and controllable process of the increase of the axial gap, and avoid the collision of the grating block caused by the too fast reset of one side. The design meets the accuracy requirement of the axial gap fine adjustment and ensures the coordination of the bilateral movement, thereby providing reliable axial adjustment guarantee for the gapless splicing.

[0027] Further, the quick mounting structure comprises a clamping groove 15, a plug rod member 16, a pulling member 17, a spring member 18 and a clamping block 19. The sliding block 212 is provided with an open clamping groove 15 at the top area of the crossed roller guide 3, and the bottom end of the bearing plate 4 is fixedly provided with a clamping block 19 matched with the clamping groove 15. The two bearing plates 4 are clamped by the clamping blocks 19 at the bottom and the clamping grooves 15 in the two sliding blocks 212. The plug rod member 16 is slidably inserted into the two sides of the clamping groove 15 of the sliding block 212, and the clamping block 19 is provided with a matched insertion hole for the end of the plug rod member 16. The pulling member 17 is fixedly installed on the end of the plug rod member 16 away from each other, and the pulling member 17 is perpendicular to the plug rod member 16. The spring member 18 is fixedly connected between the two sides of the pulling member 17 and the side wall of the sliding block 212. The clamping groove 15 and the clamping block 19 are inverted T-shaped, and the clamping block 19 is installed at the middle of the mutually facing bottom sides of the two bearing plates 4. The clamping groove 15 is designed as an open type, which facilitates the quick insertion and positioning of the clamping block 19 at the bottom of the bearing plate 4, and the initial clamping can be completed without accurate alignment, thereby improving the replacement efficiency. The matched design of the clamping groove 15 and the clamping block 19 forms the initial positioning in the axial and radial directions, thereby preventing the up-and-down movement or lateral deviation of the bearing plate 4 during the splicing process. The matched insertion hole on the two sides of the plug rod member 16 and the clamping block 19 forms secondary locking, thereby ensuring the stable and reliable connection between the bearing plate 4 and the sliding block 212 and avoiding the falling of the bearing plate 4 caused by vibration during the splicing or fine adjustment. The perpendicular connection between the pulling member 17 and the plug rod member 16 provides a convenient force point for the operator, and the operator can simultaneously drive the two plug rod members 16 away from the clamping block 19 by manually pulling the pulling member 17, thereby achieving simple and efficient operation. The spring member 18 is symmetrically distributed on the two sides of the plug rod member 16, which can provide uniform reset spring force for the plug rod member 16, thereby ensuring the accurate insertion of the plug rod member 16 into the matched insertion hole of the clamping block 19 after the pulling member 17 is loosened, and avoiding the locking failure caused by the uneven force on one side. The quick mounting structure does not need tools to realize the quick disassembly and assembly of the bearing plate 4, thereby greatly improving the adaptability of the device to different sizes of grating blocks.

[0028] Also includes: the central control module driving the device to run and the power module for the electrical components in the device; the central control module: the central control module can be set on the side or bottom of the splicing base, avoiding the interference area of the moving parts, and establishing signal connection with the SMA wire one of the micro-drive sliding structure one, the SMA wire two of the micro-drive sliding structure two, the SMA wire three of the adaptive flexible jaw group and the electromagnet through wires, and is electrically connected with the power module. Its core function is to receive the splicing accuracy detection signal, and according to the preset program or real-time feedback, accurately control the on-off state, power supply voltage and power-on time of each SMA wire, realize the timing cooperation of clamping force adjustment, crossed roller guide drive and radial / axial displacement compensation; at the same time, control the on-off of the electromagnet to switch the stiffness state of the MRE pad. The built-in control chip and driving circuit in the module support independent control and synchronous linkage of single-sided or double-sided components, ensure the full-process automation and high-precision operation of the device, and are the core control unit to realize the cooperative work of each functional component. The power module is integrated and installed at the bottom of the splicing base or the adjacent area of the central control module, and is electrically connected with the central control module, the SMA wire one, the SMA wire two, the SMA wire three and the electromagnet through the power line, to provide stable power supply for the electrical components of the whole device. It has voltage stabilizing output function, can provide accurate adjustable low-voltage direct current power supply for SMA wire according to the power demand of different components, provide adaptive working voltage for electromagnet, and at the same time provide stable control power for central control module; built-in overload protection and short circuit protection circuit can avoid component damage caused by circuit failure or voltage fluctuation, and ensure the safety and reliability of the device operation. The module supports external power supply or independent energy storage power supply, and is suitable for different use scenarios, which is the energy supply core of the normal work of the electrical system of the device Working principle: when different sizes of grating blocks need to be spliced, the corresponding size of the bearing plate 4 needs to be replaced through the quick mounting structure; when operating, the operator pulls the puller 17, which drives the vertically fixed insertion rod 16 to slide to the outside of the slider 12, at this time the spring piece three 18 is stretched, and the insertion rod 16 is completely pulled out of the adaptive insertion hole of the clamping block 19. Then, the inverted T-shaped clamping block 19 at the bottom of the bearing plate 4 is inserted into the inverted T-shaped clamping groove 15 on the slider 12, and after being in place, the puller 17 is loosened, the elastic restoring force of the spring piece three 18 pushes the insertion rod 16 to reinsert into the adaptive insertion hole of the clamping block 19, the clamping and fixing of the bearing plate 4 are completed, and the quick replacement is realized to adapt to different sizes of grating blocks.

[0029] The two grating blocks to be spliced are placed smoothly on the bosses on the top of the two bearing plates 4 respectively, at this time the adaptive flexible jaw group 9 is started, and precise clamping is realized through the cooperation of the micro-pressure clamping group and the intelligent metamaterial piece. The specific linkage process is as follows: the center control module controls the SMA wire three 22 to be powered, the SMA wire three is heated and shrinks, and the pressure jaw plate 21 is pulled to rotate around the hinge point of the opening slot of the base column piece. At this time, the high side of the pressure jaw plate 21 turns up on the boss, gradually approaching the upper surface of the grating block; the low side is synchronously turned down, driving the elastic sheet piece 23 to bend and deform, accumulating elastic potential energy, and the reaction force of the elastic sheet piece 23 will balance with the SMA clamping force. When the MRE pad 24 (the base material is silicone rubber, and carbonyl iron powder is doped inside) of the high side of the pressure jaw plate 21 contacts the surface of the grating block, the electromagnet embedded in the pressure jaw plate 21 is synchronously powered, and under the action of the magnetic field, the carbonyl iron powder in the MRE pad 24 is arranged in order, so that its stiffness is adjusted in real time according to the shape of the grating block surface - if the grating block surface has protrusions or depressions, the MRE pad 24 can tightly fit the contour by changing the stiffness, avoiding local stress concentration.

[0030] With the continuous turning of the pressure jaw plate, the bending deformation of the elastic sheet piece 23 gradually increases, and its elastic restoring force acts reversely on the low side of the pressure jaw plate, and forms a dynamic balance with the shrinkage force of the SMA wire three 22. This balance keeps the clamping force of the high side of the pressure jaw plate on the grating block in a stable and non-damaging micro-pressure range, even if the grating block shape is irregular, such as edge inclination or surface steps, the adaptive clamping without any stress can be realized through the flexible fitting of the MRE pad 24 and the buffer of the elastic sheet piece. Through the above linkage, not less than two adaptive flexible jaw groups 9 on each side form symmetrical clamping from both sides of the grating block, ensuring the stable position of the grating block on the bearing plate 4 without any risk of mechanical damage.

[0031] After clamping and fixing, the center control module directly drives the cross roller guide 3 to move, realizing the preliminary splicing of the grating block; after preliminary splicing, if the detection system finds that there is a small axial gap or a radial left-right misplacement at the splicing position of the grating block, the center control module will start the micro-drive sliding structure one (radial misplacement correction) or the micro-drive sliding structure two (axial gap fine adjustment) according to the situation, and realize single-sided or double-sided driving through the symmetrical distribution characteristics of the two, and accurately eliminate errors.

[0032] Axial gap fine adjustment: drive micro-drive sliding structure two Axial clearance refers to the parallel gap between the splicing edges of the two grating blocks along the length (axial) of the cross roller guide 3. In this case, only the micro-drive sliding structure 2 is driven for compensation, based on the SMA wire contraction drive and spring return. To reduce the axial clearance, a low-voltage current is supplied to the SMA wire 2 13 in the upper axial transverse groove 10 of the corresponding side cross roller guide 3. The SMA wire 2 13 contracts slightly after heating, pulling the slider 2 12 along the limit rod 2 11 towards the other side of the grating block until the axial clearance is eliminated. To increase the axial clearance, when the axial pressure is too high or realignment is required, the central control module disconnects the power supply to the target side SMA wire 2. After cooling, the SMA wire 2 returns to its original length. At this time, the spring 2 14 releases its elastic potential energy, pushing the slider 2 12 to rebound away from the opposite side, causing the bearing plate 4 and the grating block to move backward synchronously, thus slightly increasing the axial clearance and preventing damage to the edges of the grating blocks.

[0033] Radial misalignment correction: Driving micro-drive sliding structure 1 Radial misalignment refers to the left-right offset that occurs at the splicing point of two grating blocks along the width direction (radial) of the splicing base 1. At this time, the micro-drive sliding structure 1 is driven to compensate for it. Its core relies on the symmetrically distributed structure to achieve single-sided adjustment or double-sided coordination. The micro-drive sliding structure is centrally symmetrically distributed in two radial transverse sliding grooves 2. This design allows for individual driving of the single-sided cross roller guide 3 or simultaneous driving of both sides, flexibly correcting radial misalignment of varying degrees. If the grating blocks on one side are relatively misaligned, the central control module applies a low-voltage current to the SMA wire 7 in the single-sided radial transverse sliding groove. The SMA wire 7 retracts, pulling the slider 5 along the limiting rod 6. The cross roller guide 3 moves synchronously with the slider, and the spring 8 is stretched. This single-sided fine-tuning aligns the grating blocks on both sides. If the misalignment is large, simultaneous adjustment on both sides is required. A low-voltage current is applied to the SMA wires 7 on both sides, and the cross roller guides 3 on both sides are simultaneously fine-tuned towards the center, quickly correcting the radial misalignment. During adjustment, the slider 5 slides along the limiting rod 6 to ensure smooth movement. The low-voltage control of the SMA wire 7 and the elastic buffering of the spring 8 work together to achieve micron-level precise control of radial displacement, avoiding over-adjustment that could lead to secondary misalignment.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grating extended block fast assembly device, characterized in that, The utility model relates to a kind of light bar splicing device, including: Splicing base (1), it is rectangular plate as a whole, two parallel radial cross-slots (2) are opened in the splicing base (1) along width direction, and two radial cross-slots (2) are symmetrical about the width midline of splicing base (1); Two groups of cross roller guide rails (3) are slidably arranged in two radial cross-slots (2) and are distributed along the length direction of splicing base (1), and two groups of cross roller guide rails (3) are located on the length midline of splicing base (1) and symmetrical with each other, cross roller guide rail (3) and radial cross-slot (2) are cross-shaped; Two bearing plates (4) are slidably arranged on the parallel guide rails of the upper layer of two groups of cross roller guide rails (3), and a boss is fixedly arranged on the top of bearing plate (4) for placing grating block; Micro-drive sliding structure one is arranged between cross roller guide rail (3) and radial cross-slot (2), and micro-drive sliding structure two is arranged between bearing plate (4) and cross roller guide rail (3), micro-drive sliding structure one and micro-drive sliding structure two constitute double-dimension displacement error compensation mechanism, the components in micro-drive sliding structure one and micro-drive sliding structure two are same, micro-drive sliding structure one makes cross roller guide rail (3) and bearing plate (4) have horizontal displacement degree of freedom in radial cross-slot (2), and micro-drive sliding structure two makes bearing plate (4) and grating block have horizontal displacement degree of freedom on cross roller guide rail (3) as a whole; A plurality of adaptive flexible jaw groups (9) are arranged on both sides of the boss of bearing plate (4), and each side adaptive flexible jaw group (9) is not less than two groups, the adaptive flexible jaw group (9) is composed of micro-pressure clamping group and intelligent metamorphic material piece, for stress-free, adaptive grating block of different shapes; Wherein, the connection between cross roller guide rail (3) and bearing plate (4) is further provided with quick-mounting structure, for replacing bearing plate (4) of different specifications to adapt to grating block of different sizes; Further comprising: a central control module for driving the device to operate and a power module for supplying power to electrical elements in the device.

2. The grating expansion block fast stitching device of claim 1, wherein, The micro-pressure clamping group in the adaptive flexible jaw group (9) includes base column piece (20), pressure jaw plate (21), SMA wire three (22) and elastic sheet piece (23), a plurality of transversely equidistantly distributed base column pieces (20) are fixedly installed on both sides of the boss of bearing plate (4), and the adaptive flexible jaw groups (9) on both sides of bearing plate (4) are symmetrical with each other; An open slot is formed in the top end of the base column piece (20), and an inclined pressure jaw plate (21) is hinged in the open slot of the base column piece (20), the pressure jaw plate (21) is divided into high side section and low side section with the hinge as a dividing point, wherein the high side section extends above the boss; A plurality of SMA wire threes (22) are fixedly connected between the bottom of the high side section of the pressure jaw plate (21) and the bottom end of the base column piece (20), and an elastic sheet piece (23) is hinged between the bottom of the low side section of the pressure jaw plate (21) and the bottom end of the base column piece (20).

3. A grating expansion block fast stitching device according to claim 2, characterized in that, The end of the high side section of the pressure jaw plate (21) is an upwardly curved arc shape. The connecting position of the pressure jaw plate (21) and the third SMA wire (22) is between the base column component (20) and the side of the boss; The third SMA wire (22) and the elastic sheet component (23) are in an inclined shape that separates at the top end, and the elastic sheet component (23) is in a continuous circular arc shape.

4. The grating expansion block fast stitching device of claim 4, wherein, The intelligent metamorphic material component in the self-adaptive flexible jaw group (9) comprises an MRE pad (24) and an electromagnet, the MRE pad (24) is fixedly installed at the bottom of the high side section of the pressure jaw plate (21) for being attached to the grating block, the base material of the MRE pad (24) is silicone rubber, and carbonyl iron powder is doped inside; The electromagnet is embeddedly installed in the pressure jaw plate (21) and located above the MRE pad (24).

5. The grating expansion block fast stitching device of claim 1, wherein, The micro-drive sliding structure one comprises a sliding block one (5), a limiting rod one (6), a SMA wire one (7) and a spring component one (8), the middle part of each radial transverse sliding groove (2) is slidably connected with the sliding block one (5), and the top end of each sliding block one (5) is fixedly connected with the middle part of the bottom of each group of cross roller guide rails (3); The limiting rod one (6) is fixedly installed in the radial transverse sliding groove (2) on both sides, each group of sliding block one (5) is slidably sleeved with the two limiting rod one (6) in each radial transverse sliding groove (2), and the two sides of the sliding block one (5) are respectively fixedly connected with a plurality of SMA wire one (7) and spring component one (8) between the two end inner walls of the radial transverse sliding groove (2).

6. A grating expansion block fast stitching device according to claim 5, characterized in that, The distribution of the SMA wire one (7) and the spring component one (8) in the two radial transverse sliding grooves (2) is in a central symmetrical mode.

7. The grating expansion block fast stitching device of claim 1, wherein, The micro-drive sliding structure two comprises an axial transverse sliding groove (10), a limiting rod two (11), a sliding block two (12), a SMA wire two (13) and a spring component two (14), the top of the parallel guide rail of the upper layer of each group of cross roller guide rails (3) is provided with the axial transverse sliding groove (10) along the length direction; The middle part of the axial transverse sliding groove (10) is slidably connected with the sliding block two (12), and the top end of the sliding block two (12) protrudes the top end of the cross roller guide rail (3); The limiting rod two (11) is fixedly installed in the axial transverse sliding groove (10) on both sides, each group of axial transverse sliding grooves (10) is slidably sleeved with the two limiting rod two (11) in each axial transverse sliding groove (10), and the two sides of the sliding block two (12) are respectively fixedly connected with a plurality of SMA wire two (13) and spring component two (14) between the two end inner walls of the axial transverse sliding groove (10).

8. A grating expansion block fast stitching device according to claim 7, characterized in that, The distribution of the SMA wire two (13) and the spring component two (14) in each group of cross roller guide rails (3) is in a symmetrical mode, and the SMA wire two (13) is located on the side where the two groups of cross roller guide rails (3) are close to each other.

9. The grating expansion block fast stitching device of claim 7, wherein, The quick-mounting structure comprises a locking groove (15), a plug rod component (16), a pulling component (17), a spring component three (18) and a locking block (19), the top area of the cross roller guide rail (3) where the sliding block two (12) protrudes is provided with an open locking groove (15), and the bottom end of the bearing plate (4) is fixedly installed with the locking block (19) matched with the locking groove (15). Both of the two said bearing plates (4) are adapted and clamped by the bottom end locking block (19) and the locking slot (15) of the two sliding blocks two (12); The two sides of the locking slot (15) of the sliding block two (12) are slidably inserted with the inserting rod (16), the two sides of the locking block (19) are provided with the adapted insertion hole for the end of the inserting rod (16), the end of the two sides of the inserting rod (16) is fixedly installed with the pulling piece (17), the pulling piece (17) is perpendicular to the inserting rod (16), and the two sides of the pulling piece (17) are fixedly connected with the side outer wall of the sliding block two (12) and the spring piece three (18) located on the two sides of the inserting rod (16).

10. The grating expansion block fast stitching device of claim 9, wherein, The locking slot (15) and the locking block (19) are inverted T-shaped, and the locking block (19) is respectively installed at the middle of the mutually opposite bottom side of the two bearing plates (4).

Images