CN210285562U

CN210285562U - Variable-spacing optical axis conveying frame

Info

Publication number: CN210285562U
Application number: CN201920866753.9U
Authority: CN
Inventors: 于涛
Original assignee: Tianjin Tianhong Seiko Transmission Technology Co ltd
Current assignee: Tianjin Tianhong Seiko Transmission Technology Co ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-04-10
Anticipated expiration: 2029-06-10

Abstract

The utility model relates to the technical field of auxiliary devices, in particular to a variable-spacing optical axis conveying frame, the device placing area of which can be conveniently adjusted, so that the placing spacing of which can be conveniently adjusted, thereby reducing the use limitation of the device; comprises a bottom plate and four groups of trundles; the bottom plate includes the plate body and lower plate body, still include two sets of extension boards, still include two sets of upper limit post and two sets of lower limit post, still include two sets of gag lever posts, two sets of extension board below all is provided with the recess, and be provided with the screw thread in the inside of two sets of recesses, still include two sets of fixed plates, two sets of first screwed pipes, two sets of first threaded rod and two sets of fixed block, two sets of fixed plate inboards all are provided with first standing groove, and all be provided with first ball bearing and first spacing piece in two sets of first standing grooves, two sets of first standing groove inboards all are provided with first separation blade, still include two sets of outer connecting blocks, two sets of cover springs, two sets of flexible pipe and two sets of in connecting block.

Description

Variable-spacing optical axis conveying frame

Technical Field

The utility model relates to an auxiliary device's technical field especially relates to a become interval optical axis carriage.

Background

As is well known, an optical axis carriage is an auxiliary device used for conveying devices during the optical axis production and processing process so as to better perform subsequent operations, and is widely used in the field of device conveying; the existing optical axis conveying frame comprises a bottom plate and four groups of trundles, wherein the top ends of the four groups of trundles are respectively arranged on the left front side, the right front side, the left rear side and the right rear side of the bottom end of the bottom plate; when the existing optical axis conveying frame is used, devices are placed at the top end of a bottom plate and are conveyed through four groups of foot wheels; the existing optical axis conveying frame is found in use, the device placing area is fixed, the placing distance is fixed, and the use limitation is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a change interval optical axis carriage that its device was placed the area and can be conveniently adjusted, makes it place the interval and can conveniently adjust to reduce its use limitation.

The utility model discloses a variable-spacing optical axis conveying frame, which comprises a bottom plate and four groups of trundles; the bottom plate comprises an upper plate body, a lower plate body, two groups of extension plates, two groups of upper limiting columns and two groups of lower limiting columns, wherein the two groups of extension plates are respectively hinged at the left end and the right end of the upper plate body, the two groups of upper limiting columns and the two groups of lower limiting columns are respectively arranged at the left side and the right side of the bottom end of the upper plate body, the top ends of the two groups of lower limiting columns are respectively hinged at the bottom ends of the two groups of upper limiting columns, the bottom plate also comprises two groups of limiting rods, grooves are respectively arranged below the two groups of extension plates, threads are arranged in the two groups of grooves, the upper parts of the two groups of limiting rods are respectively inserted into and screwed in the two groups of grooves, the bottom plate also comprises two groups of fixing plates, two groups of first threaded pipes, two groups of first threaded rods and two groups of fixing blocks, the two groups of fixing plates are respectively arranged at the front, the inner sides of two groups of first placing grooves are respectively provided with first blocking pieces, the outer ends of two groups of first threaded pipes respectively penetrate through two groups of first blocking pieces and are respectively inserted into two groups of first ball bearings to be connected with two groups of first limiting pieces, the outer ends of two groups of first threaded rods are respectively inserted into and screwed into the inner ends of two groups of first threaded pipes, the inner ends of two groups of first threaded rods are respectively connected with the outer sides of two groups of fixed blocks, the telescopic pipe type water-cooling device further comprises two groups of external connecting blocks, two groups of sleeve springs, two groups of telescopic pipes and two groups of internal connecting blocks, the outer ends of two groups of external connecting blocks are respectively arranged on the inner sides of two groups of fixed plates, one ends of two groups of sleeve springs are respectively connected with two groups of external connecting blocks, one ends of two groups of telescopic pipes are respectively connected with two groups of external connecting blocks, and two groups of sleeve springs, the two groups of inner connecting blocks are respectively arranged at the outer ends of the two groups of fixed blocks.

The utility model discloses a become interval optical axis carriage, still include four groups of second screwed pipes and four groups of second threaded rods, lower body top left front side, right front side, left rear side and right rear side all are provided with the second standing groove, and all be provided with second ball bearing and the spacing piece of second in four groups of second standing grooves, four groups of second standing groove tops all are provided with the second separation blade, four groups of second screwed pipes's bottom is passed four groups of second separation blades respectively and is inserted inside four groups of second ball bearing respectively and be connected with four groups of second spacing pieces, four groups of second threaded rods bottoms insert respectively and spiral shell dress to four groups of second screwed pipes tops inside, four groups of second threaded rod tops all are connected with last plate body bottom.

The utility model discloses a become interval optical axis carriage still includes handle, spliced pole, rotation post, first gear and four group's second gears, and four group's second gears suit respectively are fixed in four group's second screwed pipe outsides, and four group's second gears all with first gear engagement, and first gear suit is fixed in the rotation post outside, and the handle is rotatable to be fixed on the spliced pole, rotates the capital end and is connected with the spliced pole bottom.

The utility model discloses a become interval optical axis carriage, lower plate body top middle part is provided with the third standing groove to be provided with third ball bearing and the spacing piece of third in the third standing groove, the third standing groove top is provided with the third separation blade, and the bottom of rotating the post is passed the third separation blade and is inserted inside and be connected with the spacing piece of third ball bearing.

The utility model discloses a become interval optical axis carriage, first gear bottom left side and right side all are provided with the gyro wheel, and the bottom of two sets of gyro wheels all with lower plate body top contact.

The utility model discloses a become interval optical axis carriage still includes four group's last bracing pieces, four group's supporting spring and four group's lower support bars, and four group's last bracing pieces are installed respectively in plate body bottom left front side, right front side, left rear side and right rear side down, and four group's supporting spring's one end is connected with four group's last bracing pieces respectively, and four group's supporting spring's the other end is connected with four group's lower support bars respectively, and four group's truckles are installed respectively in four group's lower support bar's below.

The utility model discloses a become interval optical axis carriage still includes four group's mounts, and four group's mounts are the suit respectively at four group's lower support bar lateral walls, and four group's mounts tops are connected with lower plate body bottom left front side, right front side, left rear side and right rear side respectively.

The utility model discloses a become interval optical axis carriage still includes four fixing device of group, and four fixing device of group all include spacing balladeur train, four landing legs of group and four weight pieces of group, and four landing legs of group are installed respectively in spacing balladeur train lateral wall left front side, right front side, left rear side and right rear side, and four weight pieces of group are installed respectively in the below of four landing legs of group, and four spacing balladeur train of group are the suit respectively in four mount outsides of group, and four spacing balladeur train of group respectively can four mount longitudinal sliding of group relatively.

Compared with the prior art, the beneficial effects of the utility model are that: the device placing area can be conveniently adjusted, the placing distance between the device placing area and the device placing area can be conveniently adjusted, the device placing area is reduced, the two groups of lower limiting posts are manually rotated to support the device placing area, the two groups of limiting posts are limited by the two groups of limiting rods, the two groups of extending plates are relatively fixed, the two groups of limiting rods are rotated to facilitate the disassembly and the assembly of the device, so that the two groups of lower limiting posts can be conveniently adjusted and supported, meanwhile, the two groups of fixing blocks can be driven to move forwards and backwards by manually rotating the two groups of first threaded pipes, so that the two groups of fixing blocks clamp the device, the device can be conveniently fixed during conveying, the use reliability of the device is improved, the first limiting piece limits the first threaded pipes, the first threaded pipes are prevented from being out of the first placing groove, and the first limiting piece is rigidly connected with the first threaded pipes, when first screwed pipe rotated, first spacing piece rotated along with it to first ball bearing clamps between first separation blade and first spacing piece, thereby can not leap out first standing groove, can mechanical locking between first spacing piece and the first standing groove, thereby make things convenient for first spacing piece further to fix, during two sets of fixed block lateral shifting of two sets of cover springs assistance, make things convenient for only lateral shifting of two sets of fixed blocks, the difficult distortion of the supplementary cover spring of scalable pipe.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the connection of the upper plate body, the fixing plate, the first threaded pipe, the first threaded rod and the fixing block;

FIG. 3 is an enlarged partial view of portion A of FIG. 1;

in the drawings, the reference numbers: 1. a caster wheel; 2. an upper plate body; 3. a lower plate body; 4. a stretching plate; 5. an upper limiting column; 6. a lower restraint post; 7. a limiting rod; 8. a fixing plate; 9. a first threaded pipe; 10. a first threaded rod; 11. a fixed block; 12. a first baffle plate; 13. a spring sleeve; 14. a second threaded pipe; 15. a second threaded rod; 16. a second baffle plate; 17. a handle; 18. connecting columns; 19. rotating the column; 20. a first gear; 21. a second gear; 22. a third baffle plate; 23. a roller; 24. a support spring; 25. a fixed mount; 26. a limiting sliding frame; 27. and (5) weighting the weight.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, the variable-pitch optical axis carriage of the present invention includes a bottom plate and four sets of casters 1; the bottom plate comprises an upper plate body 2, a lower plate body 3, two groups of extension plates 4, two groups of upper limiting columns 5 and two groups of lower limiting columns 6, wherein the two groups of extension plates 4 are respectively hinged at the left end and the right end of the upper plate body 2, the two groups of upper limiting columns 5 are respectively arranged at the left side and the right side of the bottom end of the upper plate body 2, the top ends of the two groups of lower limiting columns 6 are respectively hinged at the bottom ends of the two groups of upper limiting columns 5, the bottom plate also comprises two groups of limiting rods 7, grooves are respectively arranged below the two groups of extension plates 4, threads are arranged in the two groups of grooves, the upper parts of the two groups of limiting rods 7 are respectively inserted into and screwed into the two groups of grooves, the bottom plate also comprises two groups of fixing plates 8, two groups of first threaded pipes 9, two groups of first threaded rods 10 and two groups of fixing blocks 11, the two groups of fixing plates 8 are respectively arranged at the front side and the, the inner sides of the two groups of first placing grooves are respectively provided with first blocking pieces 12, the outer ends of two groups of first threaded pipes 9 respectively penetrate through the two groups of first blocking pieces 12 and are respectively inserted into the two groups of first ball bearings to be connected with the two groups of first limiting pieces, the outer ends of two groups of first threaded rods 10 are respectively inserted into and screwed into the inner ends of the two groups of first threaded pipes 9, the inner ends of the two groups of first threaded rods 10 are respectively connected with the outer sides of two groups of fixed blocks 11, the device also comprises two groups of outer connecting blocks, two groups of sleeve springs 13, two groups of telescopic pipes and two groups of inner connecting blocks, the outer ends of the two groups of outer connecting blocks are respectively arranged on the inner sides of the two groups of fixed plates 8, one ends of the two groups of sleeve springs 13 are respectively connected with the two groups of outer connecting blocks, one ends of the two groups of telescopic pipes are respectively connected, two groups of sleeve springs 13 are respectively sleeved outside two groups of telescopic pipes, and two groups of inner connecting blocks are respectively arranged at the outer ends of two groups of fixed blocks 11; the device placing area can be conveniently adjusted, the placing distance between the device placing area and the device placing area can be conveniently adjusted, the device placing area is reduced, the two groups of lower limiting posts are manually rotated to support the device placing area, the two groups of limiting posts are limited by the two groups of limiting rods, the two groups of extending plates are relatively fixed, the two groups of limiting rods are rotated to facilitate the disassembly and the assembly of the device, so that the two groups of lower limiting posts can be conveniently adjusted and supported, meanwhile, the two groups of fixing blocks can be driven to move forwards and backwards by manually rotating the two groups of first threaded pipes, so that the two groups of fixing blocks clamp the device, the device can be conveniently fixed during conveying, the use reliability of the device is improved, the first limiting piece limits the first threaded pipes, the first threaded pipes are prevented from being out of the first placing groove, and the first limiting piece is rigidly connected with the first threaded pipes, when first screwed pipe rotated, first spacing piece rotated along with it to first ball bearing clamps between first separation blade and first spacing piece, thereby can not leap out first standing groove, can mechanical locking between first spacing piece and the first standing groove, thereby make things convenient for first spacing piece further to fix, during two sets of fixed block lateral shifting of two sets of cover springs assistance, make things convenient for only lateral shifting of two sets of fixed blocks, the difficult distortion of the supplementary cover spring of scalable pipe.

The utility model discloses a become interval optical axis carriage, still include four groups of second screwed pipes 14 and four groups of second threaded rods 15, 3 top left front sides, right front sides, left rear sides and right rear sides of lower plate body all are provided with the second standing groove, and all be provided with second ball bearing and second spacing piece in four groups of second standing grooves, four groups of second standing groove tops all are provided with second fin 16, the bottom of four groups of second screwed pipes 14 passes four groups of second fin 16 respectively and inserts respectively to four groups of second ball bearing insides and be connected with four groups of second spacing pieces, four groups of second threaded rods 15 bottoms insert respectively and spiral dress to four groups of second screwed pipes 14 tops insides, four groups of second threaded rods 15 tops all are connected with upper plate body 2 bottoms; it can drive four groups of second threaded rods through rotatory four groups of second screwed pipes and carry out longitudinal movement, make the device place the height and can conveniently adjust as required, improve its adaptability, the spacing piece of second is spacing to the second screwed pipe, prevent that it from leaping up out the second standing groove, and the spacing piece of second and second screwed pipe rigid coupling, when the second screwed pipe rotates, the spacing piece of second rotates along with it, and second ball bearing clamps between second separation blade and the spacing piece of second, thereby can not leap up out the second standing groove.

The utility model discloses a become interval optical axis carriage still includes handle 17, spliced pole 18, rotates post 19, first gear 20 and four groups of second gears 21, and four groups of second gears 21 are nested respectively and are fixed in the four groups of second screwed pipes 14 outsides, and four groups of second gears 21 all mesh with first gear 20, and first gear 20 is nested and is fixed in the rotation post 19 outsides, and handle 17 is rotatable to be fixed on spliced pole 18, rotates the 19 top of post and is connected with spliced pole 18 bottom; it can make only to rotate first gear and can drive four group's second gears and rotate through the design that four group's second gears all with first gear engagement to conveniently drive the second screwed pipe and rotate, drive the first gear on the rotation post through manual rotation handle and rotate, it is more convenient to adjust the use, but the design of handle rotation makes its rotation more laborsaving.

The utility model discloses a become interval optical axis carriage, lower plate 3 top middle part is provided with the third standing groove, and is provided with third ball bearing and third spacing piece in the third standing groove, and the third standing groove top is provided with third separation blade 22, and the bottom of rotation post 19 passes third separation blade 22 and inserts to the third ball bearing inside and is connected with the third spacing piece; it can be more reliable through the supplementary rotation post rotation of third ball bearing, and the spacing piece of third is spacing to the rotation post, prevents that it from leaping up out the third standing groove, and the spacing piece of third and rotation post rigid coupling, when rotating the post and rotating, the spacing piece of third rotates along with it to third ball bearing clamps between third separation blade and the spacing piece of third, thereby can not leap out the third standing groove.

In the variable-spacing optical axis conveying frame, the left side and the right side of the bottom end of the first gear 20 are provided with the rollers 23, and the bottom ends of the two groups of rollers 23 are contacted with the top end of the lower plate body 3; it can conveniently rotate and improve the support effect through two sets of gyro wheels.

The utility model discloses a become interval optical axis carriage still includes four group's upper strut bars, four group's supporting spring 24 and four group's lower strut bars, four group's upper strut bars are installed respectively in the left front side, right front side, left back side and the right back side of lower plate body 3 bottom, four group's supporting spring 24's one end is connected with four group's upper strut bars respectively, four group's supporting spring 24's the other end is connected with four group's lower strut bars respectively, four group's truckles 1 are installed respectively in four group's lower strut bars's below; when the road surface is not flat enough, the buffer device can buffer through four groups of supporting springs so as to maintain the horizontal state integrally and improve the reliability of the horizontal state.

The variable-pitch optical axis conveying frame further comprises four groups of fixing frames 25, the four groups of fixing frames 25 are respectively sleeved on the outer side walls of the four groups of lower supporting rods, and the top ends of the four groups of fixing frames 25 are respectively connected with the left front side, the right front side, the left rear side and the right rear side of the bottom end of the lower plate body 3; it can maintain the stability of four groups of lower support rods through four groups of mounts, improves its stability.

The utility model discloses a variable-pitch optical axis carriage also comprises four groups of fixing devices, each of the four groups of fixing devices comprises a limiting sliding frame 26, four groups of supporting legs and four groups of weighting blocks 27, the four groups of supporting legs are respectively arranged at the left front side, the right front side, the left rear side and the right rear side of the side wall of the limiting sliding frame 26, the four groups of weighting blocks 27 are respectively arranged below the four groups of supporting legs, the four groups of limiting sliding frames 26 are respectively sleeved at the outer sides of four groups of fixing frames 25, and the four groups of limiting sliding frames 26 can respectively longitudinally slide relative to the four; it can aggravate the convenient stability of piece group and improve the support effect through four group's landing leg groups and four groups, when whole needs are stable, the spacing balladeur train of lapse makes four groups aggravate the piece group bottom and is located four truckles below of group to convenient stable, and when whole needs remove, the spacing balladeur train of lapse makes four groups aggravate the piece group bottom and is located four truckles tops of group, thereby make things convenient for the moving as a whole, and more practical, spacing balladeur train is from taking the stopper, makes spacing balladeur train and mount relatively fixed.

The variable-spacing optical axis conveying frame of the utility model can manually rotate two groups of extension plates to the top during operation, the supporting area of the upper plate body can be conveniently extended, the placing area of a device can be conveniently adjusted, so that the placing spacing can be conveniently adjusted, thereby reducing the use limitation of the device, and the device is supported by manually rotating two groups of lower limiting posts, two groups of limiting rods limit two groups of limiting posts, so that the two groups of extension plates are relatively fixed, the two groups of limiting rods are rotated to facilitate the disassembly and assembly of the device, thereby facilitating the adjustment and the support of the two groups of lower limiting posts, meanwhile, the two groups of fixing blocks can be driven by manually rotating two groups of first screwed pipes to move forwards and backwards, so that the two groups of fixing blocks clamp the device, the device can be conveniently fixed during conveying, the use reliability of the device is improved, and the first limiting piece limits the first screwed pipes, the first limiting piece is prevented from rotating together with the first placing groove when the first threaded pipe rotates, and the first ball bearing is clamped between the first blocking piece and the first limiting piece, so that the first placing groove cannot be leaped out, the first limiting piece and the first placing groove can be mechanically locked, the first limiting piece is convenient to further fix the first limiting piece, when two groups of fixing blocks are assisted by two groups of sleeve springs to move transversely, the two groups of fixing blocks can only move transversely, and the telescopic pipe assisted sleeve spring is not easy to distort and deform; the four groups of second threaded rods can be driven to longitudinally move by rotating the four groups of second threaded pipes, so that the placing height of the device can be conveniently adjusted as required, the adaptability of the device is improved, the second limiting pieces limit the second threaded pipes, the second threaded pipes are prevented from jumping out of the second placing groove, the second limiting pieces are rigidly connected with the second threaded pipes, when the second threaded pipes rotate, the second limiting pieces rotate together with the second threaded pipes, and the second ball bearings are clamped between the second blocking pieces and the second limiting pieces, so that the second placing groove cannot be jumped out; the four groups of second gears can be driven to rotate only by rotating the first gear through the design that the four groups of second gears are meshed with the first gear, so that the second threaded pipes can be conveniently driven to rotate; the rotation of the rotating column can be assisted to be more reliable through the third ball bearing, the third limiting piece limits the rotating column to prevent the rotating column from jumping out of the third placing groove, the third limiting piece is rigidly connected with the rotating column, the third limiting piece rotates along with the rotating column when the rotating column rotates, and the third ball bearing is clamped between the third blocking piece and the third limiting piece, so that the third placing groove cannot be jumped out; the two groups of rollers can conveniently rotate and improve the supporting effect; when the road surface is not flat enough, the buffer can be realized through four groups of supporting springs, so that the whole horizontal state is maintained conveniently, and the reliability of the road surface is improved; the stability of the four groups of lower supporting rods can be maintained through the four groups of fixing frames, so that the stability of the four groups of lower supporting rods is improved; can aggravate the convenient stability of piece group and improve the support effect through four group's landing leg groups and four groups, when whole needs are stable, the spacing balladeur train of lapse makes four groups aggravate the piece group bottom and is located four truckles below of group to convenient stable, and when whole needs remove, the spacing balladeur train of lapse makes four groups aggravate the piece group bottom and is located four truckles tops of group, thereby make things convenient for the moving as a whole, and more practical, spacing balladeur train is from taking the stopper, makes spacing balladeur train and mount relatively fixed.

The utility model discloses a become interval optical axis carriage, above the mounting means, the connected mode or the mode that sets up of all parts are welding, riveting or other common mechanical system, wherein can slide/rotate fixedly for sliding/not dropping off under the rotation state, seal when sealed intercommunication is two connecting pieces intercommunications promptly, and concrete structure, model and the coefficient index of its all parts are its from taking the technique, as long as can reach all can implementing of its beneficial effect, the event is adding the perusal more and is not being repeated.

In the case where no description is given to the contrary, the terms of "vertical, horizontal, front, rear, inner, and vertical horizontal" included in the terms of the variable-pitch optical axis carriage of the present invention only represent the orientation of the term in the normal use state, or be a trivial term understood by those skilled in the art, and should not be considered as limiting the term, at the same time, the numerical terms "first," "second," and "third," etc. do not denote any particular quantity or order, but rather are used to distinguish one from another, furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A variable-pitch optical axis conveying frame comprises a bottom plate and four groups of trundles (1); the novel floor is characterized in that the bottom plate comprises an upper plate body (2), a lower plate body (3) and two groups of extension plates (4), the two groups of extension plates (4) are respectively hinged at the left end and the right end of the upper plate body (2), the novel floor further comprises two groups of upper limiting columns (5) and two groups of lower limiting columns (6), the two groups of upper limiting columns (5) are respectively installed at the left side and the right side of the bottom end of the upper plate body (2), the top ends of the two groups of lower limiting columns (6) are respectively hinged at the bottom ends of the two groups of upper limiting columns (5), the novel floor further comprises two groups of limiting rods (7), grooves are respectively arranged below the two groups of extension plates (4), threads are arranged inside the two groups of grooves, the two groups of limiting rods (7) are respectively inserted into and screwed inside the two groups of grooves, the novel floor further comprises two groups of fixing plates (8), two groups of first threaded pipes (9), two groups of first threaded rods (10) and two groups of fixing blocks, the inner sides of two groups of fixed plates (8) are respectively provided with a first placing groove, and a first ball bearing and a first limiting sheet are respectively arranged in the two groups of first placing grooves, the inner sides of the two groups of first placing grooves are respectively provided with a first blocking sheet (12), the outer ends of two groups of first threaded pipes (9) respectively penetrate through the two groups of first blocking sheets (12) and are respectively inserted into the two groups of first ball bearings to be connected with the two groups of first limiting sheets, the outer ends of two groups of first threaded rods (10) are respectively inserted into and screwed into the inner ends of the two groups of first threaded pipes (9), the inner ends of the two groups of first threaded rods (10) are respectively connected with the outer sides of two groups of fixed blocks (11), the inner-side-type double-joint screw-joint screw-, the other ends of the two groups of sleeve springs (13) are respectively connected with the two groups of inner connecting blocks, one ends of the two groups of telescopic pipes are respectively connected with the two groups of outer connecting blocks, the other ends of the two groups of telescopic pipes are respectively connected with the two groups of inner connecting blocks, the two groups of sleeve springs (13) are respectively sleeved on the outer sides of the two groups of telescopic pipes, and the two groups of inner connecting blocks are respectively installed at the outer ends of the two groups of fixed blocks (11).

2. The variable-pitch optical axis carriage according to claim 1, further comprising four sets of second threaded pipes (14) and four sets of second threaded rods (15), wherein the lower plate body (3) is provided with second placing grooves at the top left front side, right front side, left rear side and right rear side, and is provided with second ball bearings and second limiting pieces in the four sets of second placing grooves, the four sets of second placing grooves are provided with second blocking pieces (16) at the top, the four sets of second threaded pipes (14) are respectively inserted through the four sets of second blocking pieces (16) at the bottom ends and respectively inserted into the four sets of second ball bearings and connected with the four sets of second limiting pieces, the four sets of second threaded rods (15) are respectively inserted into and screwed into the four sets of second threaded pipes (14) at the bottom ends, and the four sets of second threaded rods (15) are respectively connected with the top ends of the upper plate body (2).

3. The variable-pitch optical axis conveying frame according to claim 2, further comprising a handle (17), a connecting column (18), a rotating column (19), a first gear (20) and four groups of second gears (21), wherein the four groups of second gears (21) are respectively sleeved and fixed on the outer sides of the four groups of second threaded pipes (14), the four groups of second gears (21) are respectively meshed with the first gear (20), the first gear (20) is sleeved and fixed on the outer side of the rotating column (19), the handle (17) is rotatably fixed on the connecting column (18), and the top end of the rotating column (19) is connected with the bottom end of the connecting column (18).

4. The variable-pitch optical axis carriage according to claim 3, wherein a third placing groove is formed in the middle of the top end of the lower plate body (3), a third ball bearing and a third limiting piece are arranged in the third placing groove, a third blocking piece (22) is arranged at the top end of the third placing groove, and the bottom end of the rotating column (19) penetrates through the third blocking piece (22) to be inserted into the third ball bearing and connected with the third limiting piece.

5. The variable-pitch optical axis carriage according to claim 4, wherein rollers (23) are arranged on the left side and the right side of the bottom end of the first gear (20), and the bottom ends of the two sets of rollers (23) are in contact with the top end of the lower plate body (3).

6. The variable-pitch optical axis carriage according to claim 5, further comprising four sets of upper support rods, four sets of support springs (24) and four sets of lower support rods, wherein the four sets of upper support rods are respectively mounted on the left front side, the right front side, the left rear side and the right rear side of the bottom end of the lower plate body (3), one ends of the four sets of support springs (24) are respectively connected with the four sets of upper support rods, the other ends of the four sets of support springs (24) are respectively connected with the four sets of lower support rods, and the four sets of casters (1) are respectively mounted below the four sets of lower support rods.

7. The variable-pitch optical axis carriage according to claim 6, further comprising four sets of fixing frames (25), wherein the four sets of fixing frames (25) are respectively sleeved on the outer side walls of the four sets of lower support rods, and the top ends of the four sets of fixing frames (25) are respectively connected with the left front side, the right front side, the left rear side and the right rear side of the bottom end of the lower plate body (3).

8. The variable pitch optical axis carriage of claim 7, further comprising four sets of fixing means, each of the four sets of fixing means comprising a spacing carriage (26), four sets of legs respectively mounted on the front left side, the front right side, the rear left side and the rear right side of the side wall of the spacing carriage (26), and four sets of weights (27), the four sets of weights (27) respectively mounted below the four sets of legs, the four sets of spacing carriages (26) respectively fitted on the outer sides of the four sets of mounts (25), and the four sets of spacing carriages (26) respectively slidable longitudinally with respect to the four sets of mounts (25).