CN212028970U

CN212028970U - Camera rotating holder capable of freely adjusting angle

Info

Publication number: CN212028970U
Application number: CN202020290033.5U
Authority: CN
Inventors: 纪刚; 蒋云飞; 柴琦; 杨丰拓; 朱慧; 安帅
Original assignee: Qingdao Lianhe Chuangzhi Technology Co ltd
Current assignee: Qingdao Lianhe Chuangzhi Technology Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-11-27
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a camera rotating holder capable of freely adjusting angle, which comprises a horizontal rotating component, a pitching component, a translation component and a camera carrying device, wherein the camera carrying device is arranged on the translation component; the camera carrying device comprises a horizontal moving component and a bidirectional rotating component arranged on the horizontal moving component, wherein a fixing sleeve for fixing the camera is arranged on the bidirectional rotating component; the translation assembly comprises a lead screw mechanism driven by a servo motor, and the pitching assembly and the horizontal rotation assembly respectively comprise a group of worm and gear mechanisms driven by the servo motor. The utility model discloses a rotatory cloud platform can realize the regulation of various within range positions of camera and angle to have self-locking function, stability is good.

Description

Camera rotating holder capable of freely adjusting angle

Technical Field

The utility model relates to a but rotatory cloud platform of camera of free angle regulation.

Background

Present various self-service equipment all need shoot and gather face information and discern, and what such kind of equipment adopted mostly is the structure that is motionless on equipment, needs oneself to remove to the appointed effective area of camera to the people of height difference, and very inconvenience in the operation is along with the brisk development of manufacturing, also constantly improves the requirement to machine equipment and intellectuality simultaneously, and is also higher and higher to camera equipment's degree of freedom demand.

Because two cameras of the traditional wide-baseline binocular vision holder are assembled together, the baseline distance between the cameras is limited, and meanwhile, a long-distance object is shot by adopting two large cameras and a lens.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a but rotatory cloud platform of camera of angle regulation freely to reach the regulation that can realize various within range positions of camera and angle, purpose that stability is good.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a camera rotating holder capable of freely adjusting angles comprises a horizontal rotating assembly, a pitching assembly, a translation assembly and a camera carrying device, wherein the camera carrying device is arranged on the translation assembly, and the translation assembly is arranged on the horizontal rotating assembly through the pitching assembly; the camera carrying device comprises a horizontal moving component and a bidirectional rotating component arranged on the horizontal moving component, wherein a fixing sleeve for fixing the camera is arranged on the bidirectional rotating component; the translation assembly comprises a lead screw mechanism driven by a servo motor, and the pitching assembly and the horizontal rotation assembly respectively comprise a group of worm and gear mechanisms driven by the servo motor.

In the above scheme, the bidirectional rotating assembly includes a first connecting plate connected with the fixing sleeve through a first rotating shaft, a first support block with a threaded hole is connected below the first connecting plate, a first lead screw penetrates through the threaded hole of the first support block, one end of the first lead screw is connected with a first motor, the other end of the first lead screw is embedded in a first rotating groove, and the top of the first rotating groove is fixed on the fixing sleeve; the first connecting plate is fixed on the second connecting plate, the first connecting plate and the second connecting plate are connected in an L shape, the second connecting plate is connected to the pillar slider through a second rotating shaft, a second supporting block with a threaded hole is fixed on the pillar slider, a second rotating groove is fixedly connected below the second connecting plate, a second lead screw penetrates through the threaded hole of the second supporting block, one end of the second lead screw is connected with a second motor, and the other end of the second lead screw is embedded in the second rotating groove; the pillar slide block is installed on the bottom plate through the horizontal moving assembly.

In a further technical scheme, a first fixing plate is mounted at the front end of the first motor, the first fixing plate is connected to a first supporting block through a first telescopic rod, and an output shaft of the first motor is connected with a first lead screw; and a second fixing plate is mounted at the front end of the second motor, the second fixing plate is connected to the second supporting block through a second telescopic rod, and an output shaft of the second motor is connected with a second lead screw.

In a further technical scheme, the horizontal movement assembly comprises two side plates arranged on the bottom plate, a guide rod is arranged between the two side plates, and the pillar slide block penetrates through the guide rod and is connected with a third motor through a third screw rod.

In the above scheme, the every single move subassembly is including installing the every single move base on the horizontal rotation subassembly and setting up the every single move support on the every single move base, every single move support top is through setting up the curved surface slide rail sliding connection every single move support in its both sides, set up the every single move worm in the every single move support, every single move worm connects the pitch motor, set up in the every single move support with every single move worm gear that the every single move worm cooperatees, translation subassembly is connected at every single move support top.

In a further technical scheme, a pulley groove is formed in the bottom of the pitching support, and the pitching worm wheel is of a half-fan-shaped structure and is embedded in the pulley groove.

In a further technical scheme, slide rail grooves are formed in two sides of the bottom of the pitching support, slide block bottom grooves are formed in the slide rail grooves, slide rail slide blocks are installed in the slide block bottom grooves, the curved surface slide rails are embedded in the slide rail grooves, and the slide rail slide blocks can slide on the curved surface slide rails.

In the above scheme, the horizontal rotation assembly comprises a box body, and a horizontal worm wheel which are arranged in the box body, the horizontal worm is connected with a horizontal motor, a driving shaft is arranged at the center of the horizontal worm wheel, the top of the driving shaft is connected with a driving disc, and the driving disc is fixedly connected with the pitching assembly.

In the above scheme, the translation assembly comprises a slide rail platform, a translation slide rail and a translation lead screw are arranged on the slide rail platform, the translation lead screw is connected with a translation motor, a translation sliding block is arranged on the translation lead screw, the translation sliding block can move on the translation slide rail, and the camera carrying device is installed on the translation sliding block.

Preferably, 2 camera carrying devices are arranged on the translation assembly.

Through the technical scheme, the utility model provides a pair of but rotatory cloud platform of camera of free angle regulation has following advantage:

1. horizontal rotation subassembly, every single move subassembly and translation subassembly can realize displacement and the angular adjustment of camera in the great scope, and camera carrying device can realize displacement and the angular adjustment of camera in less scope, and both combine, can realize omnidirectional displacement and angular adjustment, can carry out work by automatic alignment target, need not client and walk specific area, can shoot the detection to the dead angle on every side, adapt to the demand of modern production life work more.

2. The cooperation is relatively stable between each structure, and the clearance is less, does not have the problem that motion extreme position and clearance are big, can realize high accuracy location, and is pleasing to the eye exquisite on the global design.

3. The transmission mechanism adopts a worm gear and a worm screw mechanism, the transmission chain is short, the transmission is stable, the stability in the transmission process can be ensured, the transmission efficiency is high, and the mechanism can realize rapid movement.

4. The utility model discloses a can set up 1 and a plurality of camera carrying device on the translation subassembly to adapt to different operational environment, when setting up 2 camera carrying device, for two mesh camera carrying platform, the base line that can realize two mesh cameras is adjustable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic structural view of a camera rotating pan-tilt capable of freely adjusting an angle, which is disclosed in an embodiment of the present invention;

fig. 2 is a schematic view of a camera mounting device disclosed in the embodiment of the present invention;

fig. 3 is a schematic structural view of the carrying device with the fixing sleeve removed according to the embodiment of the present invention;

fig. 4 is a first schematic view of a fixing sleeve according to an embodiment of the present invention;

fig. 5 is a schematic view of a fixing sleeve structure disclosed in the embodiment of the present invention;

fig. 6 is a schematic structural view of a horizontal moving assembly according to an embodiment of the present invention;

fig. 7 is a schematic view of a first rotary trough structure disclosed in the embodiment of the present invention;

FIG. 8 is a schematic view of the state in which the camera is rotated in the X direction;

FIG. 9 is a schematic view of a state two in which the camera is rotated in the X direction;

fig. 10 is a schematic view of a state in which the camera is rotated in the Y direction;

FIG. 11 is a schematic view of the rotation in the Y direction of FIG. 10 with the cover removed;

FIG. 12 is a schematic view of a state two in which the camera is rotated in the Y direction;

FIG. 13 is a second view of FIG. 12 with the cover removed and rotated in the Y-direction;

FIG. 14 is an enlarged view of the first motor connection;

FIG. 15 is an enlarged view of the second motor connection;

FIG. 16 is an enlarged view of the connection part of the third motor

Fig. 17 is a schematic view of a split structure of the translation assembly according to an embodiment of the present invention;

fig. 18 is a schematic structural view of a pitch assembly according to an embodiment of the present invention;

fig. 19 is a schematic view of a split structure of a pitching assembly according to an embodiment of the present invention;

fig. 20 is a schematic structural view of a pitch worm gear according to an embodiment of the present invention;

fig. 21 is a schematic structural view of a pitching supporting frame according to an embodiment of the present invention;

fig. 22 is a schematic structural view of a horizontal rotation assembly according to an embodiment of the present invention;

fig. 23 is a schematic view of a split structure of the horizontal rotation assembly according to the embodiment of the present invention;

fig. 24 is a schematic structural diagram of a box of the horizontal rotation assembly disclosed in the embodiment of the present invention.

In the figure, a camera mounting device; B. a translation assembly; C. a pitch assembly; D. a horizontal rotation assembly; 1. fixing a sleeve; 2. a shaft hole; 3. a first rotating shaft; 4. a first connecting plate; 5. a first support block; 6. a first lead screw; 7. a first motor; 8. a first rotary groove; 9. a second connecting plate; 10. a second rotating shaft; 11. a strut slide block; 12. a second support block; 13. a second rotary groove; 14. a second lead screw; 15. a second motor; 16. a base plate; 17. a side plate; 18. a guide bar; 19. a third lead screw; 20. a third motor; 21. a spherical groove; 22. a first connecting hole; 23. a second connecting hole; 24. a locking hole; 25. locking the screw; 26. a first fixing plate; 27. a first telescopic rod; 28. a second fixing plate; 29. a second telescopic rod; 30. a third fixing plate; 31. fixing the rod; 32. a slide rail platform; 33. translating the slide rail; 34. translating the lead screw; 35. a translation motor; 36. a translation slide block; 37. a pitching base; 38. a pitching support; 39. a curved surface slide rail; 40. a pitch support; 41. a pitch worm; 42. a pitch motor; 43. a pitch worm gear; 44. a pulley groove; 45. a slide rail groove; 46. a slider bottom groove; 47. a slide rail slider; 48. mounting holes; 49. a box body; 50. a horizontal worm; 51. a horizontal worm gear; 52. a horizontal motor; 53. a drive shaft; 54. a drive disc; 55. a top cover; 56. a central bore; 57. and a Z-direction shaft hole.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The utility model provides a camera rotating holder capable of freely adjusting the angle, as shown in figure 1, comprising a horizontal rotating component D, a pitching component C, a translation component B and a camera carrying device A, wherein the camera carrying device A is arranged on the translation component B, and the translation component B is arranged on the horizontal rotating component D through the pitching component C; the translation assembly B comprises a lead screw mechanism driven by a servo motor, and the pitching assembly C and the horizontal rotating assembly D respectively comprise a group of worm and gear mechanisms driven by the servo motor.

As shown in fig. 2, the camera carrying device a includes a horizontal moving component and a bidirectional rotating component arranged on the horizontal moving component, the bidirectional rotating component is provided with a fixed sleeve 1 for fixing the camera, as shown in fig. 4, the fixed sleeve 1 is provided with a shaft hole 2, the bidirectional rotating component includes a first connecting plate 4 connected with the fixed sleeve 1 through a first rotating shaft 3, the first rotating shaft 3 passes through the shaft hole 2, the first supporting block 5 is connected with a threaded hole below the first connecting plate 4, the first lead screw 6 passes through the threaded hole of the first supporting block 5, one end is connected with the first motor 7, the other end is embedded in the first rotating groove 8, when the first motor 7 is started, the first lead screw 6 can be driven to move in the threaded hole of the first supporting block 5, and then the first rotating groove 8 is driven to rotate. The top of the first rotary groove 8 is fixed on the fixing sleeve 1, and when the first rotary groove 8 rotates, the fixing sleeve 1 is driven to rotate around the first rotating shaft 3, as shown in fig. 8 and 9, so that the rotation of the camera in the X direction is realized.

As shown in fig. 3, the first connecting plate 4 is fixed on the second connecting plate 9, the two connecting plates are connected in an L shape, the second connecting plate 9 is connected to the pillar slider 11 through the second rotating shaft 10, the pillar slider 11 is fixed with the second supporting block 12 with a threaded hole, the lower part of the second connecting plate 9 is fixedly connected with the second rotating groove 13, the second lead screw 14 passes through the threaded hole of the second supporting block 12, one end of the second lead screw is connected with the second motor 15, and the other end of the second lead screw is embedded in the second rotating groove 13. When the second motor 15 is started, the second screw 14 can be driven to move in the threaded hole of the second support block 12, so as to push the second rotating groove 13 to rotate, and as the second rotating groove 13 is fixedly connected with the second connecting plate 9, the second connecting plate 9 is further pushed to rotate around the second rotating shaft 10, and the second connecting plate 9 is fixedly connected with the first connecting plate 4, as shown in fig. 10 to 13, so that the rotation of the camera in the Y direction is realized.

As shown in fig. 14, a first fixing plate 26 is installed at the front end of the first motor 7, the first fixing plate 26 is connected to the first supporting block 5 through a first telescopic rod 27, the output shaft of the first motor 7 is connected to the first lead screw 6, when the first motor 7 is started, the output shaft drives the first lead screw 6 to rotate forward, meanwhile, the first telescopic rod 27 is shortened, the distance between the first motor 7 and the first supporting block 5 is shortened, the rotation stroke of the first lead screw 6 can be ensured, the first motor 7 is fixed on the first supporting block 5, and it can be ensured that the first motor 7 does not rotate along with the first lead screw 6.

As shown in fig. 15, a second fixing plate 28 is mounted at the front end of the second motor 15, the second fixing plate 28 is connected to the second supporting block 12 through a second telescopic rod 29, an output shaft of the second motor 15 is connected to the second lead screw 14, when the second motor 15 is started, the output shaft drives the second lead screw 14 to rotate forward, meanwhile, the second telescopic rod 29 is shortened, the distance between the second motor 15 and the second supporting block 12 is shortened, so that the rotation stroke of the second lead screw 14 can be ensured, and the second motor 15 is fixed to the second supporting block 12, so that the second motor 15 is ensured not to rotate along with the second lead screw 14.

As shown in fig. 6, the pillar sliding block 11 is mounted on the bottom plate 16 through a horizontal moving assembly, the horizontal moving assembly includes two side plates 17 disposed on the bottom plate 16, a guide rod 18 is disposed between the two side plates 17, the pillar sliding block 11 passes through the guide rod 18 and is connected to a third motor 20 through a third lead screw 19, when the third motor 20 is started, the third lead screw 19 is driven to rotate, the pillar sliding block 11 can be pushed to move horizontally along the guide rod 18, and displacement of the camera in the horizontal direction is achieved.

As shown in fig. 16, a third fixing plate 30 is mounted at the front end of the third motor 20, the third fixing plate 30 is connected to one of the side plates 17 through a fixing rod 31, an output shaft of the third motor 20 is connected to a third lead screw 19, when the third motor 20 is started, the output shaft drives the third lead screw 19 to rotate, and the threaded hole on the pillar slider 11 can move on the third lead screw 19.

The first rotary groove 8 and the second rotary groove 13 are respectively provided with a spherical groove 21, and one end of the first lead screw 6 and one end of the second lead screw 14 are respectively embedded in the spherical grooves 21 and can slide up and down in the spherical grooves 21. As shown in fig. 7, a first connecting hole 22 is formed at the top of the first rotary groove 8, a second connecting hole 23 is formed at a corresponding position of the fixed sleeve 1, and the first and second connecting holes are connected through bolts.

In this embodiment, as shown in fig. 5, a locking hole 24 is formed on the fixing sleeve 1, and a locking screw 25 for locking the camera is disposed in the locking hole 24.

As shown in fig. 17, the translation assembly B includes a slide rail platform 32, a translation slide rail 33 and a translation lead screw 34 are disposed on the slide rail platform 32, the translation lead screw 34 is connected to a translation motor 35, the translation motor 35 is fixed on the slide rail platform 32, a translation slider 36 is disposed on the translation lead screw 24, the translation slider 35 can move on the translation slide rail 33, and the camera carrying device a is mounted on the translation slider 36 through the bottom plate 16. In this embodiment, set up 2 camera carrying device A on the translation subassembly B, constitute two mesh cameras. When the translation motor 35 works, the translation lead screw 34 is driven to rotate, so that the translation slide block 35 is driven to slide along the translation slide rail 33, and the position of the camera carrying device a is adjusted. When the two cameras need to be synchronously close to or away from each other, the thread turning direction on the translation lead screw 34 can be divided into two opposite parts, and when the translation motor 35 runs, the translation lead screw 34 rotates, so that the two cameras can be synchronously close to or synchronously away from each other, and the baseline distance between the two cameras is further adjusted; when two cameras need to move towards one direction synchronously, the translation lead screw 34 is a common unidirectional thread; when the positions of the two cameras need to be adjusted independently, two sets of translation motors 35 and translation lead screws 34 can be arranged and arranged as required.

As shown in fig. 18 and 19, the pitch assembly C includes a pitch base 37 mounted on the horizontal rotation assembly D and a pitch support 38 disposed on the pitch base 37, a pitch support 40 is slidably connected above the pitch support 38 through curved slide rails 39 on two sides, a pitch worm 41 is disposed in the pitch support 38, the pitch worm 41 is connected to a pitch motor 42, the pitch motor 42 is fixed on the pitch support 38, a pitch worm gear 43 matched with the pitch worm 41 is disposed in the pitch support 40, and the top of the pitch support 40 is connected to the rail platform 32 of the translation assembly B.

As shown in fig. 20 and 21, the bottom of the pitch bracket 40 is provided with a pulley groove 44, and the pitch worm wheel 43 has a half-sector structure and is mounted in the pulley groove 44 through a mounting hole 48 thereon. Two sides of the bottom of the pitching support 40 are provided with slide rail grooves 45, slide block bottom grooves 46 are arranged in the slide rail grooves 45, slide rail slide blocks 47 are arranged in the slide block bottom grooves 46, and the slide rail slide blocks 47 can slide on the curved slide rails 39. When the pitching motor 42 works, the pitching worm 41 is driven to rotate, the pitching worm 41 drives the pitching worm wheel 43 to swing, and further the pitching support 40 is driven to swing on the curved surface slide rail 39, so that the translation assembly B and the camera carrying device a thereon can be controlled to swing within a certain angle range.

As shown in fig. 22 and 23, the horizontal rotation assembly D includes a box 49, and a horizontal worm 50 and a horizontal worm wheel 51 which are disposed in the box 49, the horizontal worm 50 is connected to a horizontal motor 52, the horizontal motor 52 is fixed outside the box 49, a driving shaft 53 is disposed in the center of the horizontal worm wheel 51, the top of the driving shaft 53 is connected to a driving disc 54, and the driving disc 54 is fixedly connected to the pitch base 37 of the pitch assembly C. A top cover 55 is arranged on the top of the box 49, and the driving shaft 53 passes through a central hole 56 of the top cover 55 and is connected with an upper driving disc 54. When the horizontal motor 52 works, the horizontal worm 50 is driven to rotate, so that the horizontal worm wheel 51 is driven to rotate, the driving disc 54 is driven to rotate through the driving shaft 53, and finally, the horizontal rotation of the pitching assembly C and other assemblies thereon is realized.

In the case 49 structure shown in fig. 24, a Z-axis hole 57 is formed in the bottom of the case 49, and a shoulder is provided in the Z-axis hole 57 to reduce vibration without exposing the shaft end of the drive shaft 53 to the outside of the case.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A camera rotating holder capable of freely adjusting angles comprises a horizontal rotating assembly, a pitching assembly, a translation assembly and a camera carrying device, and is characterized in that the camera carrying device is arranged on the translation assembly, and the translation assembly is arranged on the horizontal rotating assembly through the pitching assembly; the camera carrying device comprises a horizontal moving component and a bidirectional rotating component arranged on the horizontal moving component, wherein a fixing sleeve for fixing the camera is arranged on the bidirectional rotating component; the translation assembly comprises a lead screw mechanism driven by a servo motor, and the pitching assembly and the horizontal rotation assembly respectively comprise a group of worm and gear mechanisms driven by the servo motor.

2. The camera rotating tripod head capable of freely adjusting the angle of claim 1, wherein the bidirectional rotating assembly comprises a first connecting plate connected with the fixed sleeve through a first rotating shaft, a first supporting block connected with a threaded hole below the first connecting plate, a first lead screw passing through the threaded hole of the first supporting block, one end connected with the first motor and the other end embedded in the first rotating groove, and the top of the first rotating groove fixed on the fixed sleeve; the first connecting plate is fixed on the second connecting plate, the first connecting plate and the second connecting plate are connected in an L shape, the second connecting plate is connected to the pillar slider through a second rotating shaft, a second supporting block with a threaded hole is fixed on the pillar slider, a second rotating groove is fixedly connected below the second connecting plate, a second lead screw penetrates through the threaded hole of the second supporting block, one end of the second lead screw is connected with a second motor, and the other end of the second lead screw is embedded in the second rotating groove; the pillar slide block is installed on the bottom plate through the horizontal moving assembly.

3. The camera rotating tripod head capable of freely adjusting the angle according to claim 2, wherein a first fixing plate is mounted at the front end of the first motor, the first fixing plate is connected to the first supporting block through a first telescopic rod, and an output shaft of the first motor is connected to a first lead screw; and a second fixing plate is mounted at the front end of the second motor, the second fixing plate is connected to the second supporting block through a second telescopic rod, and an output shaft of the second motor is connected with a second lead screw.

4. The camera rotating tripod head of claim 2, wherein the horizontal moving assembly comprises two side plates disposed on the bottom plate, a guide rod is disposed between the two side plates, and the pillar sliding block passes through the guide rod and is connected to the third motor through a third lead screw.

5. The camera rotating tripod head capable of freely adjusting the angle of claim 1, wherein the pitching assembly comprises a pitching base installed on the horizontal rotating assembly and a pitching support installed on the pitching base, a pitching support is slidably connected above the pitching support through curved sliding rails installed on two sides of the pitching support, a pitching worm is installed in the pitching support, the pitching worm is connected with a pitching motor, a pitching worm wheel matched with the pitching worm is installed in the pitching support, and the top of the pitching support is connected with the translating assembly.

6. The camera rotating tripod head capable of freely adjusting the angle according to claim 5, wherein a pulley groove is formed at the bottom of the pitching support, and the pitching worm gear is of a half-sector structure and is embedded in the pulley groove.

7. The camera rotating tripod head capable of freely adjusting the angle according to claim 5, wherein two sides of the bottom of the pitching frame are provided with slide rail grooves, slide block bottom grooves are formed in the slide rail grooves, slide rail slide blocks are installed in the slide block bottom grooves, the curved slide rails are embedded in the slide rail grooves, and the slide rail slide blocks can slide on the curved slide rails.

8. The camera rotating tripod head capable of freely adjusting the angle according to claim 1, wherein the horizontal rotating assembly comprises a box body, and a horizontal worm wheel which are arranged in the box body, the horizontal worm is connected with a horizontal motor, a driving shaft is arranged at the center of the horizontal worm wheel, the top of the driving shaft is connected with a driving disc, and the driving disc is fixedly connected with the pitching assembly.

9. The camera rotating tripod head capable of freely adjusting the angle according to claim 1, wherein the translation assembly comprises a slide rail platform, a translation slide rail and a translation lead screw are arranged on the slide rail platform, the translation lead screw is connected with a translation motor, a translation slider is arranged on the translation lead screw, the translation slider can move on the translation slide rail, and the camera carrying device is mounted on the translation slider.

10. A camera head rotating head according to any one of claims 1 to 9, wherein 2 camera head carrying devices are provided on the translation assembly.