CN212451639U - Inner wall laser cladding device and transmission arm section thereof - Google Patents
Inner wall laser cladding device and transmission arm section thereof Download PDFInfo
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- CN212451639U CN212451639U CN202021297413.8U CN202021297413U CN212451639U CN 212451639 U CN212451639 U CN 212451639U CN 202021297413 U CN202021297413 U CN 202021297413U CN 212451639 U CN212451639 U CN 212451639U
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Abstract
The utility model provides an inner wall laser cladding device and a transmission arm joint thereof, wherein the transmission arm joint is a round pipe body as a whole, six channel holes of the same type are uniformly arranged on the pipe wall, and three channel holes of the same type are respectively used as return water channels of a cooling water circulation water channel; an inner sleeve is matched, the inner sleeve is sleeved in the axis through hole of the transmission arm section, annular steps protruding inwards are arranged at the front end and the rear end of the wall of the axis through hole, and the annular steps at the two ends of the axis through hole are in sealing connection with the outer surfaces of the two ends of the inner sleeve; an annular sealing cavity is formed in an annular gap between the annular steps at two ends between the inner sleeve and the axis through hole, and the front end and the rear end of the annular sealing cavity are respectively communicated with water inlet channel holes which are obliquely formed. The utility model is suitable for the laser cladding of the inner wall of the pipe fitting with high length-diameter ratio, the pipe diameter can reach 55mm at least, the cladding depth can reach 3m at most, if the cladding is carried out on the through hole, the cladding can reach 6m on both sides; convenient assembling and stability are high.
Description
Technical Field
The utility model belongs to laser cladding equipment field especially relates to a can carry out laser cladding's device to the inner wall of high draw ratio pipe fitting.
Background
For example, the inner walls of pipe fittings such as pipelines, oil cylinder columns and the like are required to be subjected to wear-resistant or corrosion-resistant treatment, and traditionally, an electric arc copper melting or electroplating mode is mainly adopted, and the two modes are limited by material selection and can only be used on a plurality of specific products; in addition, electroplating is greatly influenced on the environment due to the adoption of chemical means, and is gradually eliminated in recent years. The laser cladding technology can solve the problem of material limitation, but the outer diameter of a corresponding mechanism for bearing a laser cladding head of the existing device for carrying out laser cladding on the inner wall of a pipe fitting is larger, the device can only be used for cladding the inner wall of the pipe fitting with the inner diameter of more than 100mm, a mode of adding a plurality of supports is adopted, and the device cannot be used for the inner wall of a non-standard cylindrical hole such as an injection molding machine.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an inner wall laser cladding device suitable for high draw ratio pipe fitting and transmission arm festival thereof specifically is:
transmission arm festival, its characterized in that: the whole body is a round pipe body, six first-class channel holes are uniformly formed in the pipe wall, one first-class channel hole is used for transmitting nozzle shielding gas, two first-class channel holes are used for transmitting cladding powder, and the remaining three first-class channel holes are respectively used as water return channels of a cooling water circulation waterway;
an inner sleeve is matched, the inner sleeve is sleeved in the axis through hole of the transmission arm section, annular steps protruding inwards are arranged at the front end and the rear end of the wall of the axis through hole, and the annular steps at the two ends of the axis through hole are in sealing connection with the outer surfaces of the two ends of the inner sleeve;
an annular sealing cavity is formed in an annular gap between the annular steps at two ends between the inner sleeve and the axis through hole, the front end and the rear end of the annular sealing cavity are respectively communicated with water inlet channel holes which are obliquely formed, one end orifice of each water inlet channel hole is located on the end face of the pipe wall, and the other end orifice is arranged on the wall of the axis through hole close to the annular step.
Furthermore, a plurality of weight reduction grooves are uniformly formed in the periphery of the pipe wall, and each weight reduction groove is formed between two first-class channel holes and water inlet channel holes at two ends.
Furthermore, a plurality of groups of positioning pin mounting blind holes are uniformly formed in the end faces of the two ends of the pipe wall correspondingly, and the number of the positioning pin mounting blind holes in each group is at least one.
Furthermore, an annular sealing groove for accommodating a sealing O-shaped ring is formed at the end face of one end of the hole wall at the hole opening end of the channel.
The inner wall laser cladding device comprises a transmission arm structure, wherein the transmission arm structure is mainly formed by sequentially connecting and fixedly connecting a plurality of transmission arm sections in series.
The utility model is suitable for the laser cladding of the inner wall of the pipe fitting with high length-diameter ratio, the pipe diameter can reach 55mm at least, the cladding depth can reach 3m at most, if the cladding is carried out on the through hole, the cladding can reach 6m on both sides; convenient assembling and stability are high.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
FIG. 1 is a schematic perspective view of one embodiment of the present apparatus;
FIG. 2 is a perspective view of a first structural embodiment of a transfer arm segment;
FIG. 3 is a front end view of a first structural embodiment of a transfer arm segment;
FIG. 4 is a perspective view of a second structural embodiment of a transfer arm segment;
FIG. 5 is a schematic perspective view of the inner sleeve;
FIG. 6 is a front end view of the inner sleeve sleeved over the transmission arm joint;
FIG. 7 is a sectional view taken along line A-A of FIG. 6;
FIG. 8 is an enlarged view of the portion circled B in FIG. 7;
FIG. 9 is a schematic view of two transmission arm sections in a butt joint state, cut along the center of a pair of water inlet passage holes;
FIG. 10 is a schematic view showing a connection structure of a left portion of a positioning pin and a transfer arm section according to the second embodiment;
FIG. 11 is a schematic view showing the structure of a positioning pin according to the second embodiment;
FIG. 12 is a schematic view showing a connection structure of a positioning pin, an oblique jack screw and a vertical jack screw according to a second embodiment;
FIG. 13 is a schematic structural view of a vertical jackscrew with a cone-shaped head;
FIG. 14 is a schematic view showing a connection structure of a left portion of a positioning pin and a transfer arm section in accordance with a third embodiment;
FIG. 15 is a schematic view of the connection structure of each set of positioning pins and vertical jackscrews of the third embodiment;
FIGS. 16 and 17 are schematic perspective views of two structural forms of the fixing frame;
FIG. 18 is a schematic view of a horizontal encircling auxiliary fixing structure;
FIG. 19 is a schematic view of an upper inclined auxiliary fixing structure;
FIG. 20 is a schematic view of a composite diagonal auxiliary fixing structure;
FIG. 21 is a perspective view of the middle portion of the composite diagonal auxiliary fixing structure;
fig. 22 is a schematic diagram of an embodiment of the optical path structure of the present apparatus.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a perspective view of an embodiment of the device, wherein the operation table of the device, the clamping and rotating mechanisms for the pipe fitting, and the like can adopt the prior art, but are not the focus of the present invention, so the drawing is omitted;
as shown in the figure, the device comprises a cladding head 1, a transmission arm 2 and a base mechanism 3, wherein the transmission arm 2 is the key point of the utility model;
two ends of a transmission arm 2 are respectively fixedly connected and communicated with the cladding head 1 and the base mechanism 3, and the transmission arm 2 is used for conveying laser, coaxial shielding gas, nozzle shielding gas and cladding powder for the cladding head 1; cladding powder, shielding gas and laser are sprayed out from the cladding head 1 to carry out laser cladding on the inner wall of the pipe to be processed;
the first embodiment is as follows:
figures 2 and 3 are a perspective view and a front end view, respectively, of a first constructive embodiment of the transfer arm segment; the laser is transported in the direction from the rear end to the front end, and therefore, according to the transport direction of the laser, the position indicated by 2101 is defined as the rear end of the transfer arm section, and the position indicated by 2102 is defined as the front end of the transfer arm section;
each transmission arm section 21 is integrally a circular tube body, and an axis channel formed by the axis through hole 211 is directly used for transmitting laser and coaxial shielding gas; the channels for transmitting the nozzle shielding gas, the cladding powder and the cooling water are directly arranged on the pipe wall of the circular pipe body;
preferably, as shown in the drawing, in this embodiment, six first-class passage holes are uniformly formed in the tube wall 212 of the transmission arm section 21, wherein one first-class passage hole denoted by 2121 in the drawing is used for transmitting nozzle shielding gas, one second-class passage hole denoted by 2122 in two drawings is used for transmitting cladding powder, the remaining three second-class passage holes denoted by 2123 in the drawings are respectively used as return water passages of the cooling water circulation water path, and the water inlet passage hole 2124 serving as a water inlet passage is also directly formed in the tube wall in this embodiment, and the passage hole adjacent to each return water passage is matched with one water inlet passage hole 2124;
in the first embodiment, the water inlet passage holes 2124 are directly formed in the pipe wall like the first-type passage holes, that is, the water inlet passage holes are formed in the pipe wall from the rear end opening of the pipe wall to the front end opening of the pipe wall;
example two:
FIG. 4 is a perspective view of a second structural embodiment of a transfer arm segment; FIG. 5 is a schematic perspective view of the inner sleeve; FIG. 6 is a front end view of the transmission arm joint sleeved with an inner sleeve 215; FIG. 7 is a sectional view taken along line A-A of FIG. 6; FIG. 8 is an enlarged view of the portion circled B in FIG. 7; FIG. 9 is a schematic view of two transmission arm sections in a butt joint state, cut along the center of a pair of water inlet passage holes;
the difference between the present embodiment and the first embodiment includes:
six weight-reducing grooves 213 are uniformly formed in the periphery of the pipe wall so as to reduce the weight of the transmission arm section, and the groove wall 214 between every two adjacent weight-reducing grooves also plays a role of a reinforcing rib; however, each weight reduction groove 213 is provided between two first-class passage holes, which may conflict with the passage portion of the water inlet passage hole in the pipe wall in the first embodiment, therefore, in this embodiment, each section of the transmission arm section is additionally provided with an inner sleeve 215 (shown in fig. 5) in a matching manner, as shown in fig. 6 to 8, the inner sleeve 215 is sleeved in the axis through hole 211 of the transmission arm section, and the front and rear ends of the wall of the axis through hole 211 of the transmission arm section are provided with annular steps 2111 protruding inwards, the annular steps 2111 at the two ends of the axis through hole 211 are connected with the outer surfaces of the two ends of the inner sleeve 215 in a sealing manner, and in order to enhance the sealing performance, a sealing rubber ring (hidden in the figure) is further installed between the two grooves 21111 provided on the inner side surface of;
therefore, an annular sealing cavity 216 is formed by an annular gap between the annular step 2111 at two ends between the inner sleeve 215 and the axis through hole 211, referring to fig. 9, the front and rear ends of the annular sealing cavity 216 are respectively communicated with obliquely opened water inlet passage holes 2124A, one end opening of each water inlet passage hole 2124A is positioned on the end surfaces of the front and rear ends of the pipe wall 212, which are indicated by 2102 and 2101 in fig. 2, and the other end opening is opened on the wall of the axis through hole 211 close to the annular step 2111, so that the annular sealing cavity 216 and the three obliquely opened water inlet passage holes 2124A at two ends jointly form a water inlet passage of the transmission arm section; the weight reduction groove 213 is arranged on the outer surface of the pipe wall between the water inlet passage holes at the two ends;
the above structure can reduce the weight of the transmission arm section, ensure the whole strength, and perform water cooling for the axial channel actually occupied by the inner sleeve 215 more uniformly and efficiently.
Further, in order to increase the sealing performance of the butt joint of each channel of the two adjacent transmission arm sections, an annular sealing groove (for example, the position indicated by 21242 in fig. 9) is further formed at the orifice end of the corresponding channel hole of one section, and is used for accommodating a sealing O-ring, as shown in fig. 2, 3, 4 and 6, the utility model discloses a ring-shaped sealing groove is formed at the orifice end on the front end face, and of course, the orifice end on the rear end face can be uniformly formed, or one part is formed at the front end face, and the other part is formed at the rear end face;
in addition, the utility model discloses still provide several kinds of embodiments of the connection structure of adjacent two sections transmission arm sections, combine the figure explanation as follows respectively:
three groups of positioning pin mounting blind holes 217 (see fig. 3) are uniformly formed in the end faces of the tube walls of the two sections of transmission arm sections, the number of the positioning pin mounting blind holes in each group is two, the two positioning pins correspond to each group, and the hole center of each positioning pin mounting blind hole is parallel to the hole center of the axis through hole 211;
one embodiment is as follows: the positioning pin is cylindrical, and two ends of the positioning pin respectively extend into the mounting blind holes 217 of the two adjacent transmission arm sections and are in interference fit with the mounting blind holes, so that the two adjacent transmission arm sections are tightly butted; the structure is simplest, but the processing precision requirement is extremely high;
the second embodiment: referring to fig. 10, the right-side transmission arm section is hidden in the drawing, and the right half parts of the two positioning pins and the positioning pin mounting blind holes of the right-side transmission arm section are still in interference fit; the outer peripheral surface of the pipe wall of the transmission arm joint on the left side is obliquely provided with an oblique mounting screw hole 219 which corresponds to each positioning pin mounting blind hole and is communicated with the positioning pin mounting blind hole and is used for screwing an oblique jackscrew; the inclined mounting screw hole 219 is arranged in the pipe wall from outside to inside in the same direction as the corresponding positioning pin mounting blind hole in the same side from the orifice to the extending direction of the bottom of the hole;
correspondingly, referring to fig. 11, each positioning pin 218 is also cylindrical as a whole, and a portion of the sidewall of the left rod body half is removed by cutting or other means to form an inclined recessed portion 220, which has an inclined surface 2202 into which the inclined plug head portion obliquely extends and an abutting surface 2201 which can abut against the top end surface of the plug head portion; referring to fig. 12, the transmission arm sections on both sides are hidden in the drawing, the right half part of the positioning pin 218 extends into the positioning pin mounting blind hole of the transmission arm section on the right side and still adopts interference fit with the positioning pin mounting blind hole, the left half part of the positioning pin 218 extends into the positioning pin mounting blind hole of the transmission arm section on the left side, for convenient installation and alignment, the two sides can not adopt interference fit, but can have an adjustment gap for convenient final fastening connection, an oblique jackscrew 221 is screwed and extends into along an oblique mounting screw hole 219, and the top end surface of the head part of the jackscrew abuts against the top surface 2201 of an oblique depressed part 220 of the left half part of the positioning pin 218 in the corresponding positioning pin mounting blind hole, because the oblique mounting screw hole 219 is provided with a direction from the outside to the inside of the pipe wall and the same side as the extending direction from the hole to the hole bottom of the corresponding positioning pin mounting blind hole, the oblique jackscrew 221, meanwhile, the jackscrew can be screwed, so that the transmission arm sections on the two sides are connected more firmly, the sealing performance is enhanced, and the coaxiality of the two sections of corresponding through channels can be adjusted more conveniently due to the matching of the three groups and six positioning pins which are uniformly distributed and the oblique jackscrew;
preferably, a vertical mounting screw hole for screwing a vertical jackscrew 222 is further formed in each group of positioning pin mounting blind holes on the pipe wall of the transmission arm section provided with the oblique mounting screw hole 219, the vertical mounting screw hole is positioned between the two positioning pin mounting blind holes in each group and vertically communicated with the two positioning pin mounting blind holes, the vertical jackscrew 222 is screwed and extends into the vertical mounting screw hole, and the head end surface of the jackscrew can be abutted against the outer side surfaces of the positioning pins 218 in the two positioning pin mounting blind holes, so that fine adjustment of the axes of the two positioning pins 218 in each group can be realized through the vertical jackscrew 222, and further auxiliary adjustment of the coaxiality of the correspondingly communicated channels of the two adjacent transmission arm sections is realized;
preferably, in order to make the vertical jackscrew 222 contact and abut against the outer side surfaces of the two positioning pins 218 of the corresponding group better, as shown in fig. 13, the head 2221 of the vertical jackscrew 222 is a cone with a narrow lower part and a wide upper part, and two sides of the outer conical surface of the cone abut against the outer side surfaces of the positioning pins of the corresponding group respectively.
Third embodiment:
referring to fig. 14, the right-side transmission arm section is hidden, and the right half parts of the two positioning pins 218A and the positioning pin mounting blind holes of the right-side transmission arm section are in interference fit as in the first and second embodiments; the pipe wall of the transmission arm joint on the left side is provided with two vertical mounting screw holes for screwing the vertical jackscrews 222 corresponding to each group of two positioning pin mounting blind holes, and the two vertical mounting screw holes are positioned between the two positioning pin mounting blind holes of each group and vertically communicated with the two positioning pin mounting blind holes;
correspondingly, referring to fig. 15, each positioning pin 218A is also cylindrical as a whole, and two annular positioning grooves 224 are cut or otherwise formed in the left half rod body thereof; the right half of the positioning pin 218A extends into the positioning pin mounting blind hole of the right transmission arm section and still adopts interference fit with the positioning pin mounting blind hole, the left half of the positioning pin 218A extends into the positioning pin mounting blind hole of the left transmission arm section, and for convenient installation and alignment, the two parts can not adopt interference fit, but with adjustable clearance, in order to facilitate the final fastening, two vertical jackscrews 222 are screwed into the vertical mounting screw holes, and the head of each jackscrew is respectively clamped against the corresponding annular positioning groove 224 on the left half part of the two positioning pins 218A, the vertical jackscrew 222 can prevent the left half part 218A of the positioning pin from being separated from the positioning pin mounting blind hole, meanwhile, the connection between the transmission arm sections at two sides is firmer and the sealing performance is enhanced by screwing the jackscrew, due to the matching of the three groups and six uniformly distributed positioning pins and the oblique jackscrews, the coaxiality of two sections of corresponding communicated channels can be more conveniently adjusted;
preferably, in order to make the vertical jackscrew 222 contact and abut against the annular positioning groove 224 of the two positioning pins 218A of the corresponding set better, as shown in fig. 13 and 15, the head 2221 of the vertical jackscrew 222 is a cone with a narrow lower part and a wide upper part, and the axial cross-sectional shape of the annular positioning groove 224 is a corresponding trapezoid.
In order to further strengthen the stability and firmness of the overlong transmission arm 2 formed by connecting a plurality of transmission arm sections in series, the utility model also provides an auxiliary fixing structure, the core part of the auxiliary fixing structure comprises a fixing frame and a fixing rod, the three-dimensional schematic diagrams of two structural forms of the fixing frame are respectively shown in fig. 16 and 17, the fixing frame comprises an annular body 300, the central through hole of the annular body is matched with the axle center through hole 211 of the transmission arm section and can be in butt joint communication, and the pipe wall of the annular body is provided with through holes which are matched with the first-class channel hole, the water inlet channel hole, the positioning pin mounting blind hole, the positions and the pore diameters which are arranged on the pipe wall of the transmission arm section and can; the periphery of the annular body 300 is also provided with a plurality of protruding parts provided with through holes 302 for the fixed rods to pass through; as shown in fig. 16, the annular body 300 of this embodiment has three protrusions 301 uniformly around its periphery, or as shown in fig. 17, has four protrusions;
fig. 18 shows an exemplary embodiment of an auxiliary fastening structure (see also fig. 1): the principle schematic diagram of the horizontal surrounding type auxiliary fixing structure is that a plurality of fixing frames are sequentially arranged along the length direction of a transmission arm 2, each fixing frame is clamped between two transmission arm sections, a positioning pin penetrates through corresponding through holes of the fixing frames, the positioning pin and the corresponding through holes of the fixing frames can be in interference fit, and a class of through channel holes and a water inlet channel hole in each transmission arm section are respectively communicated with the corresponding through holes in the fixing frames in a sealing mode through sealing rubber rings; the fixing frames adopt the structure form shown in fig. 16 or fig. 17, each fixing rod 32 sequentially passes through the through hole of the corresponding boss of each fixing frame, the axis of the through hole of each boss 301 of each fixing frame is parallel to the axis of the axis through hole 211, so that the axis of each fixing rod is also parallel to the axis through hole 211, the front end of each fixing rod 32 is fixed with the corresponding boss of the fixing frame 31 positioned at the foremost end through a nut, and the rear end of each fixing rod 32 is fixed with the corresponding position of the base mechanism 3;
fig. 19 is another embodiment of the auxiliary fixing structure: the structural schematic diagram of the upper oblique-pulling auxiliary fixing structure is different from the horizontal surrounding type in that the axes of through hole holes of two symmetric protruding portions 301B at the upper end of the outer periphery of the annular body of the fixing frame 31A (see fig. 17) at the foremost end are inclined upward, and the two protruding portions are defined as oblique-pulling protruding portions; the axes of the through hole holes of the other protruding portions are the same as those of the horizontal surrounding type, namely, the axes are parallel to the axis of the axis through hole 211, the corresponding connecting fixing rod is defined as a horizontal fixing rod 33, the front end of each horizontal fixing rod 33 is respectively arranged through the through hole of the corresponding protruding portion of the fixing frame 31A at the foremost end and is fixed through a nut, the rear end of each horizontal fixing rod 33 is respectively fixed with the corresponding position of the base mechanism 3, namely, the axis of the rod of the horizontal fixing rod 33 is parallel to the axis of the axis through hole 211; the two diagonal-pulling convex parts 301B are fixedly connected with a diagonal-pulling fixing rod 32A respectively, one end of the diagonal-pulling fixing rod penetrates through a through hole of the diagonal-pulling convex part and is fixed by a fastening nut, the other end of the diagonal-pulling fixing rod is fixed with the corresponding position of the base mechanism 3, and the axial lead of the diagonal-pulling fixing rod and the axial lead of the axial center through hole 211 are obliquely intersected in the projection of a vertical plane, namely the diagonal-pulling fixing rod is fixedly arranged from the front end to the rear end in an oblique and upward manner, so that a better diagonal-pulling fixing auxiliary effect is realized on the transmission arm;
FIG. 20 is a schematic view of a composite diagonal auxiliary fixing structure; FIG. 21 is a perspective view of the middle part of the embodiment;
the composite oblique-pulling auxiliary fixing mechanism is equivalent to the combination of a horizontal surrounding type and an upper oblique-pulling type, in particular to
As shown in the figure, the device comprises a horizontal unit and a cable-stayed unit, wherein the horizontal unit is arranged at the front section part of the transmission arm 2, the horizontal unit comprises a horizontal front end fixing frame 331 and a horizontal rear end fixing frame 332 which are positioned at the front end and the rear end, the cable-stayed unit comprises a cable-stayed front end fixing frame 341 positioned at the front end, and the cable-stayed front end fixing frame 341 is positioned between the horizontal front end fixing frame 331 and the horizontal rear end fixing frame 332; a plurality of transmission arm sections can be arranged between the cable-stayed front end fixing frame 341 and the horizontal rear end fixing frame 332 at intervals, preferably, the cable-stayed front end fixing frame 341 and the horizontal rear end fixing frame 332 are respectively attached to and fixed on the end faces of the front end and the rear end of the same transmission arm section 21, namely, only one transmission arm section 21 is arranged between the cable-stayed front end fixing frame 341 and the horizontal rear end fixing frame 332 at intervals, so that the overall strength can be better ensured;
the fixing modes of the horizontal front end fixing frame 331, the horizontal rear end fixing frame 332, the diagonal front end fixing frame 341 and the two adjacent transmission arm sections can be referred to in the foregoing, and are not described in detail herein;
a plurality of fixing rods 333 are fixedly arranged between the horizontal front end fixing frame 331 and the horizontal rear end fixing frame 332 and around the transmission arm, each fixing rod is parallel to the axial lead of the axial center through hole 211 of the transmission arm, and the connection structure of each fixing rod with the horizontal front end fixing frame 331 and the horizontal rear end fixing frame 332 and the fixing part structure of each fixing frame can be referred to in the foregoing, and are not described again;
the axes of the through holes of the two symmetric protrusions 3411 at the upper end of the outer periphery of the annular body of the cable-stayed front end fixing frame 341 are inclined upward, defining the two protrusions as cable-stayed protrusions; the axes of the through hole holes of the other protruding portions are the same as those of the horizontal surrounding type, namely, the axes are parallel to the axis of the axis through hole 211, the front ends of the correspondingly connected horizontal fixing rods 343 are respectively arranged through the through holes of the corresponding protruding portions of the diagonal front-end fixing frame 341 and fixed through nuts, the rear end of each horizontal fixing rod 343 is respectively fixed with the corresponding position of the base mechanism 3, namely, the axis of the rod of the horizontal fixing rod 343 is parallel to the axis of the axis through hole 211; the two diagonal protrusions 3411 are fixedly connected with a diagonal fixing rod 342 respectively, one end of the diagonal fixing rod penetrates through a through hole of the diagonal protrusion and is fixed by a fastening nut, the other end of the diagonal fixing rod is fixed with the corresponding position of the base mechanism 3, and the axial lead of the diagonal fixing rod and the axial lead of the axial center through hole 211 are obliquely intersected in a vertical plane, namely the diagonal fixing rod is fixedly arranged from the front end to the rear end in an oblique and upward manner;
preferably, the fixing rod of the horizontal unit surrounds the periphery of the front cable-stayed fixing frame 341 of the cable-stayed unit, and the horizontal fixing rod 343 and the cable-stayed fixing rod 342 of the cable-stayed unit surround the periphery of the rear horizontal fixing frame 332 of the horizontal unit, respectively. Therefore, the space can be fully utilized, and the stress distribution of the auxiliary mechanism can be more balanced.
The utility model also provides an embodiment of light path structure suitable for this device, as shown in fig. 22, be equipped with first collimating mirror 41, plane mirror 42 by the vertical downward direction of optic fibre incident department in proper order in the base mechanism 3, and plane mirror 42 is located the initial position on the laser direction of delivery line in transmission arm 2, set gradually first convex lens group, terminal mirror group by back to the front along the laser direction of delivery in transmission arm 2, wherein first convex lens group includes one and more than first convex lens 43 by back to the front sets gradually, terminal mirror group comprises second convex lens 44 by back to the front sets gradually, concave lens 45 and parabolic mirror 46, and parabolic mirror sets up in cladding head 1, the second convex lens 44 of first convex lens group and terminal mirror group, concave lens 45 then sets up in transmission arm 2;
laser is emitted into the base mechanism 3 from the optical fiber incidence position from top to bottom, is converted into parallel light through the first collimating mirror 41, is converted into horizontal direction through the plane reflecting mirror 42 and is emitted into the transmission arm, the laser is ensured to be converged through the first convex lens group, light rays emitted to the outer wall are reduced, and the number of the first convex lenses is determined according to the length of the transmission arm; then the light is converted into parallel light through a second convex lens 44 of the tail end lens group, the parallel light is diverged through a concave lens 45, and finally the parallel light is turned and focused by a parabolic mirror 46 of the tail end lens group and is emitted from the cladding head vertically and downwards;
the light path structure can avoid the problem that the parabolic mirror is easy to burn when the power is too high, and improve the uniformity of the whole illuminated area; the design of the multi-convex lens is adopted, so that the energy scattered to the tube wall by the laser is reduced, and the remote transmission becomes possible.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. Transmission arm festival, its characterized in that: the whole body is a round pipe body, six first-class channel holes are uniformly formed in the pipe wall, one first-class channel hole is used for transmitting nozzle shielding gas, two first-class channel holes are used for transmitting cladding powder, and the remaining three first-class channel holes are respectively used as water return channels of a cooling water circulation waterway;
an inner sleeve is matched, the inner sleeve is sleeved in the axis through hole of the transmission arm section, annular steps protruding inwards are arranged at the front end and the rear end of the wall of the axis through hole, and the annular steps at the two ends of the axis through hole are in sealing connection with the outer surfaces of the two ends of the inner sleeve;
an annular sealing cavity is formed in an annular gap between the annular steps at two ends between the inner sleeve and the axis through hole, the front end and the rear end of the annular sealing cavity are respectively communicated with water inlet channel holes which are obliquely formed, one end orifice of each water inlet channel hole is located on the end face of the pipe wall, and the other end orifice is arranged on the wall of the axis through hole close to the annular step.
2. The transfer arm segment as claimed in claim 1, wherein a plurality of weight-reducing grooves are formed uniformly on the outer periphery of the tube wall, and each weight-reducing groove is formed between two first-class passage holes and the water inlet passage holes at both ends.
3. The transmission arm section according to claim 1, wherein a plurality of sets of positioning pin mounting blind holes are uniformly formed on the end faces of the two ends of the pipe wall, and the number of the positioning pin mounting blind holes in each set is at least one.
4. The transfer arm segment of claim 1, wherein the port end of the first channel on the port wall end face further defines an annular seal groove for receiving a sealing O-ring.
5. The inner wall laser cladding device is characterized by comprising a transmission arm structure, wherein the transmission arm structure is mainly formed by sequentially connecting and fixedly connecting a plurality of transmission arm sections according to any one of claims 1 to 4 in series.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021297413.8U CN212451639U (en) | 2020-07-06 | 2020-07-06 | Inner wall laser cladding device and transmission arm section thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021297413.8U CN212451639U (en) | 2020-07-06 | 2020-07-06 | Inner wall laser cladding device and transmission arm section thereof |
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| CN212451639U true CN212451639U (en) | 2021-02-02 |
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| CN202021297413.8U Active CN212451639U (en) | 2020-07-06 | 2020-07-06 | Inner wall laser cladding device and transmission arm section thereof |
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