CN110961838B - Assembly tool and assembly method for steering tiller - Google Patents
Assembly tool and assembly method for steering tiller Download PDFInfo
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- CN110961838B CN110961838B CN201910980127.7A CN201910980127A CN110961838B CN 110961838 B CN110961838 B CN 110961838B CN 201910980127 A CN201910980127 A CN 201910980127A CN 110961838 B CN110961838 B CN 110961838B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
Abstract
The invention discloses an assembly tool and an assembly method for a steering tiller, and belongs to the field of water jet propulsion devices. The assembly fixture of steering tiller includes: the bottom plate, first round platform, first jam and second round platform, the bottom plate is dull and stereotyped and the transversal L shape of personally submitting of bottom plate, the bottom plate includes mutually perpendicular's vertical end and horizontal end, first round platform is fixed in the vertical end of bottom plate, the second round platform is fixed in the junction of the vertical end of bottom plate and the horizontal end of bottom plate, the welding operation window has been seted up to the horizontal end of bottom plate, and two mounting holes, the welding operation window is located between second round platform and two mounting holes, the center of first round platform is equipped with the first counter sink hole with first jam matched with, first jam and first connecting hole cooperate, the center of second round platform is equipped with the second counter sink, the second counter sink hole cooperatees with the second end of cylindric lock, the assembly fixture that turns to the tiller still includes two second jams, the mounting hole cooperatees with the second jam, the second jam cooperatees with the third connecting hole.
Description
Technical Field
The invention relates to the field of water jet propulsion devices, in particular to an assembly tool and an assembly method for a steering tiller.
Background
A water jet propulsion device is a power device for a water vehicle such as a ship, and it generates a jet water flow by jetting water from a stern at a high speed by a water jet propulsion pump, and uses the reaction force of the jet water flow to propel the ship, and can change the jet direction of the jet water flow to perform operations such as forward sailing, backward sailing, lateral moving, tilting movement, or pivot steering of the ship. The water jet propulsion pump can adopt an axial flow pump (provided with a guide vane nozzle). In addition to the waterjet propulsion pump, the waterjet propulsion device also comprises a steering reverse navigation machine, a main shaft assembly and an inflow pipeline component.
The steering reverse navigation machine comprises a steering shaft, a steering tiller and a steering nozzle. The steering tiller is provided with three external connectors, one part of the steering tiller is fixed with the steering nozzle through a screw, the other part of the steering tiller is connected with the steering shaft through a pin shaft, and the other part of the steering tiller is connected with the guide vane nozzle. The steering oil cylinder controls the steering tiller and the steering nozzle through the steering shaft, so that the jet direction of jet water flow is changed to realize the operations of transverse movement, oblique movement or pivot steering and the like of the ship.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the steering tiller has the following assembly requirements that all sizes of the steering tiller are processed in place in a part state, and a structural part is directly assembled after being formed. The assembly requirement needs to strictly ensure the sizes of the three external interfaces of the steering tiller, but the three external interfaces are not on the same surface, so that great difficulty is brought to the assembly of the steering tiller.
Disclosure of Invention
The embodiment of the invention provides an assembly tool and an assembly method of a steering tiller, which can realize the assembly of the steering tiller and can ensure the dimensional accuracy of three external interfaces of the steering tiller during the assembly. The technical scheme is as follows:
on the one hand, provide an assembly fixture of steering tiller, steering tiller includes: the assembly fixture comprises a Z-shaped plate, a cylindrical pin, an L-shaped plate and a rectangular plate, wherein a first connecting hole is formed in the first end of the Z-shaped plate, the second end of the Z-shaped plate is sleeved with the first end of the cylindrical pin and is fixedly connected with the first end of the L-shaped plate, the length extending direction of the Z-shaped plate is perpendicular to the length extending direction of the L-shaped plate, a second connecting hole is formed in the second end of the cylindrical pin along the diameter direction of the cross section, the length extending direction of the L-shaped plate coincides with the length extending direction of the threaded hole, the second end of the L-shaped plate is fixedly connected with the rectangular plate, two third connecting holes are formed in the rectangular plate, and the assembly fixture for the steering tiller comprises: the assembly tool comprises a bottom plate, a first round platform, a first plug and a second round platform, wherein the bottom plate is a flat plate, the cross section of the bottom plate is L-shaped, the bottom plate comprises a vertical end and a transverse end which are perpendicular to each other, the first round platform is fixed at the vertical end of the bottom plate, the second round platform is fixed at the joint of the vertical end of the bottom plate and the transverse end of the bottom plate, the transverse end of the bottom plate is provided with a welding operation window and two mounting holes, the welding operation window is positioned between the second round platform and the two mounting holes, the center of the first round platform is provided with a first counter sink hole matched with the first plug, the first plug is matched with the first connecting hole, the center of the second round platform is provided with a second counter sink hole matched with the second end of the cylindrical pin, and the assembly tool for the steering tiller further comprises two second plugs, the mounting hole is matched with the second plug, and the second plug is matched with the third connecting hole.
Optionally, the first plug is in a straight line shape, the first plug comprises first to third rectangular blocks which are sequentially overlapped together, the centers of the first to third rectangular blocks are all aligned, the volumes of the first to third rectangular blocks are sequentially increased, the first rectangular block is used for being clamped in the first countersunk hole, and the second rectangular block is used for being clamped in the first connecting hole.
Optionally, the assembly fixture for the steering tiller further comprises a bolt, the first counter sink is matched with the bolt, and the first plug is provided with a threaded hole matched with the bolt.
Optionally, the second is blockked up and is the in-line, the second is blockked up including the fourth to the sixth rectangular block that superpose together in order, the center of fourth to the sixth rectangular block all aligns just the volume of fourth to the sixth rectangular block increases in order, the fifth rectangular block is used for the card to locate the third connecting hole, the L shaped plate with the rectangular plate welding, the L shaped plate with welding seam between the rectangular plate with the length direction of sixth rectangular block is perpendicular.
Optionally, the assembly fixture for the steering tiller further comprises two U-shaped clamps, and the U-shaped clamps are used for clamping the bottom plate and the second plug.
In another aspect, there is provided an assembling method of a steering tiller, including:
providing an assembly tool for a Z-shaped plate, a cylindrical pin, an L-shaped plate, a rectangular plate and a steering tiller, wherein a first connecting hole is formed in the first end of the Z-shaped plate, a cylindrical pin hole is formed in the second end of the Z-shaped plate, a step is formed in the first end of the cylindrical pin, a second connecting hole is formed in the second end of the cylindrical pin along the diameter direction of the cross section, two third connecting holes are formed in the rectangular plate, and the assembly tool for the steering tiller is the assembly tool for the steering tiller;
placing a second end of the cylindrical pin into a second counter bore of the second round table, wherein the length direction of the second connecting hole is parallel to the length extending direction of the transverse end of the bottom plate;
fixing a first end of the Z-shaped plate on the first round table through the first plug, and placing a second end of the Z-shaped plate on a step of the cylindrical pin through the cylindrical pin hole;
fixing the rectangular plate to the base plate through the third connection hole and the second plug;
fitting the L-shaped plate between the Z-shaped plate and the rectangular plate;
fixing the Z-shaped plate and the cylindrical pin;
and finishing the assembly of the steering tiller.
Optionally, the second is blockked up and is the in-line, the second is blockked up including the fourth to the sixth rectangular block that superpose together in order, the center of fourth to the sixth rectangular block all aligns just the volume of fourth to the sixth rectangular block increases in order, the fifth rectangular block is used for the card to locate the third connecting hole, the L shaped plate with the rectangular plate welding, the L shaped plate with welding seam between the rectangular plate with the length direction of sixth rectangular block is perpendicular.
Optionally, said fitting said L-shaped plate between said Z-shaped plate and said rectangular plate comprises:
the L-shaped plate is fixed between the Z-shaped plate and the rectangular plate by spot welding,
welding a single-side welding seam between the Z-shaped plate and the L-shaped plate, wherein the length direction of the sixth rectangular block is perpendicular to the single-side welding seam between the Z-shaped plate and the L-shaped plate;
and welding a double-sided welding seam between the L-shaped plate and the rectangular plate through the welding operation window.
Optionally, the fixing the Z plate and the cylindrical pin comprises:
and welding a single-side welding seam between the Z-shaped plate and the cylindrical pin after the L-shaped plate is fixed between the Z-shaped plate and the rectangular plate by spot welding.
Optionally, the method for assembling the steering tiller further comprises:
after the assembly of the steering tiller is completed, the first plug and the second plug are respectively rotated by 90 degrees, and then the steering tiller obtained through assembly is taken out from an assembly tool of the steering tiller.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the assembly tool for the steering tiller further comprises two second plugs, and the mounting holes are matched with the second plugs; the first round platform, the second round platform and the bottom plate respectively guarantee the assembly heights of a Z-shaped plate, a cylindrical pin and a rectangular plate of the steering tiller; the first round table is matched with the first plug for use, and the second round table is added, so that the distance and the direction of the Z-shaped plate and the cylindrical pin can be determined; the distance between the rectangular plate and the cylindrical pin can be determined by the cooperation of the second counter sink on the second circular table and the mounting hole on the bottom plate and the second plug; the welding operation window designed on the bottom plate can facilitate the welding of the rectangular plate and the reverse side of the L-shaped plate of the steering tiller without influencing the welding construction; the assembly of the steering tiller is realized, and the Z-shaped plate, the cylindrical pin and the rectangular plate respectively correspond to the three external interfaces of the steering tiller, so that the dimensional accuracy of the three external interfaces of the steering tiller can be ensured during assembly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a water jet propulsion system according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a steering tiller according to an embodiment of the present invention;
FIG. 3 is a schematic view of FIG. 2 taken in the direction A;
fig. 4 and 5 are schematic structural views of an assembly tool for a steering tiller according to an embodiment of the invention;
FIGS. 6 and 7 are schematic views illustrating the assembly of the steering tiller and the assembly fixture according to the embodiment of the invention;
FIGS. 8 and 9 are schematic structural views of a first plug provided by an embodiment of the present invention;
FIGS. 10 and 11 are schematic structural views of a second plug provided by an embodiment of the present invention;
fig. 12 is a flowchart of an assembling method of a steering tiller according to an embodiment of the present invention.
In the drawings, there is shown in the drawings,
the steering device comprises a steering tiller 1, a steering nozzle 2, a steering shaft 3, a guide vane nozzle 4, a steering oil cylinder 5, a Z-shaped plate 11, a cylindrical pin 12, a L-shaped plate 13, a rectangular plate 14, a first connecting hole 11a, a second connecting hole 12a, a third connecting hole 14a, a bottom plate 81, a first round table 82, a first plug 83, a second round table 84, a second plug 85, a bolt 86, an 87U-shaped clamp 81a welding operation window 81b, a mounting hole 83a, a first rectangular block 83b, a second rectangular block 83c, a third rectangular block 83d, a threaded hole 85a, a fourth rectangular block 85a, a fifth rectangular block 85b and a sixth rectangular block 85 c.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As mentioned above, the steering tiller is one of the important structural members in a steering and astern running machine of a waterjet propulsion device. Fig. 1 is a schematic structural diagram of a water jet propulsion device provided by an embodiment of the invention. Referring to fig. 1, the steering tiller 1 has three external joints, one part of which is fixed with a steering nozzle 2 through screws, the other part of which is connected with a steering shaft 3 through a pin shaft, and the other part of which is connected with a guide vane nozzle 4 of the guide vane type mixed flow pump. The steering oil cylinder 5 controls the steering tiller 1 and the steering nozzle 2 through the steering shaft 3, so that the jet direction of jet water flow is changed to realize the operations of transverse movement, oblique movement or pivot steering and the like of the ship.
Fig. 2 and 3 are schematic structural views of a steering tiller according to an embodiment of the present invention. Referring to fig. 2 and 3, the steering tiller includes: z shaped plate 11, cylindric lock 12, L shaped plate 13 and rectangular plate 14, first connecting hole 11a has been seted up to the first end of Z shaped plate 11, the first end of cylindric lock 12 is located to the second pot head of Z shaped plate 11, and with the first end fixed connection of L shaped plate 13, the length extending direction of Z shaped plate 11 is perpendicular with the length extending direction of L shaped plate 13, second connecting hole 12a has been seted up along the diameter direction of cross section to the second end of cylindric lock 12, the length extending direction of L shaped plate 13 and the length extending direction coincidence of screw hole 83d, the second end and the rectangular plate 14 fixed connection of L shaped plate 13, two third connecting holes 14a have been seted up on the rectangular plate 14.
Fig. 4 and 5 are schematic structural views of an assembly fixture for a steering tiller according to an embodiment of the present invention. Fig. 6 and 7 are assembly views of a steering tiller according to an embodiment of the present invention. Referring to fig. 4 and 5, the assembling tool for the steering tiller includes: a bottom plate 81, a first truncated cone 82, a first plug 83 and a second truncated cone 84. The bottom plate 81 is a flat plate, the cross section of the bottom plate 81 is L-shaped, the bottom plate 81 comprises a vertical end and a horizontal end which are perpendicular to each other, the first round platform 82 is fixed at the vertical end of the bottom plate 81, the second round platform 84 is fixed at the joint of the vertical end of the bottom plate 81 and the horizontal end of the bottom plate 81, the horizontal end of the bottom plate 81 is provided with a welding operation window 81a and two mounting holes 81b, the welding operation window 81a is positioned between the second round platform 84 and the two mounting holes 81b, and the center of the first round platform 82 is provided with a first countersunk hole matched with the first plug 83. Referring to fig. 6 and 7, the first plug 83 is fitted to the first connection hole 11 a. The center of the second round platform 84 is provided with a second counter-sunk hole, and the second counter-sunk hole is matched with the second end of the cylindrical pin 12. The assembly fixture for the steering tiller further comprises two second plugs 85, the mounting holes 81b are matched with the second plugs 85, and the second plugs 85 are matched with the third connecting holes 14 a.
In the embodiment of the invention, the assembly tool for the steering tiller further comprises two second plugs 85, and the mounting holes 81b are matched with the second plugs 85; the first round platform 82, the second round platform 84 and the bottom plate 81 respectively guarantee the assembly heights of the Z-shaped plate 11, the cylindrical pin 12 and the rectangular plate 14 of the steering tiller; the use of the first truncated cone 82 in combination with the first plug 83, together with the second truncated cone 84, enables the distance and direction of the Z-plate 11 and the cylindrical pin 12 to be determined; the distance between the rectangular plate 14 and the cylindrical pin 12 can be determined by the second counter-sunk hole on the second round table 84 and the matching use of the mounting hole 81b on the bottom plate 81 and the second plug 85; the welding operation window 81a designed on the bottom plate 81 can facilitate the welding of the rectangular plate 14 and the reverse side of the L-shaped plate 13 of the steering tiller without influencing the welding construction; the assembly of the steering tiller is realized, and the Z-shaped plate 11, the cylindrical pin 12 and the rectangular plate 14 respectively correspond to three external interfaces of the steering tiller, so that the dimensional accuracy of the three external interfaces of the steering tiller can be ensured during assembly.
In the Z-shaped plate 11, the included angle of each of the two bent portions is 180 ° -20 ° -160 ° (fig. 3); in the L-shaped plate 13, the angle of the bent portion may be 125 ° +35 ° (fig. 2). In the steering tiller, the material of each part can be 316L stainless steel, the thickness of each plate can be 10mm, and the maximum external dimension of the structural part can be 165 x 135 x 94 mm.
Illustratively, as shown in fig. 2, the weld (black filled portion in the drawing) between the rectangular plate 14 and the L-shaped plate 13 is a double-sided weld, and the weld between the L-shaped plate 13 and the Z-shaped plate 11, and the weld between the Z-shaped plate 11 and the cylindrical pin 12 are single-sided welds.
Illustratively, the first circular truncated cone 82 and the second circular truncated cone 84 may be respectively welded and fixed on the bottom plate 81. The first round table 82 and the second round table 84 are located on the same plane of the bottom plate 81, and the height of the first round table 82 is higher than that of the second round table 84.
Illustratively, the welding operation window 81a may be a rectangular hole, and the size of the rectangular hole may be 65 × 50mm (length × width).
The assembly fixture of the steering tiller has the following effects: the height difference between the first round platform 82, the second round platform 84 and the bottom plate 81 ensures the assembly height of the rectangular plate 14, the Z-shaped plate 11 and the cylindrical pin 12. The use of the first boss 82 in conjunction with the first spigot 83, in combination with the second boss 84, enables the distance and orientation of the Z plate 11 and cylindrical pin 12 to be determined. The distance between the rectangular plate 14 and the cylindrical pin 12 can be determined by the second countersunk hole in the second truncated cone 84 in combination with the mounting hole 81b in the bottom plate 81 and the second plug 85. In addition, the welding operation window 81a designed on the bottom plate 81 can facilitate the welding of the reverse sides of the rectangular plate 14 and the L-shaped plate 13, and does not influence the welding construction.
Illustratively, the steering tiller assembly fixture may further include a bolt 86 (e.g., bolt 86 which may be M4), the first counter bore is engaged with the bolt 86, and the first plug 83 is provided with a threaded hole 83d engaged with the bolt 86.
The Z-shaped plate 11 is pressed by the bolt 86, so that the side bending or the flatness out-of-tolerance can be prevented.
According to the size, the steering tiller is a small structural part, welding heat is difficult to transfer due to the small structural part during the assembling process of the steering tiller, such as welding, the linear expansion coefficient of stainless steel is 40% larger than that of common carbon steel, and the linear expansion coefficient is correspondingly improved along with the increase of temperature, so that the welding deformation is large. To solve this problem, the embodiment of the present invention provides the first plug 83 and the second plug 85 of a special structure.
Fig. 8 and 9 are schematic structural views of the first plug 83 according to the embodiment of the present invention. Referring to fig. 8 and 9, the first plug 83 is in a straight line shape, the first plug 83 includes first to third rectangular blocks 83a to 83c sequentially stacked together, centers of the first to third rectangular blocks 83a to 83c are all aligned, and volumes of the first to third rectangular blocks 83a to 83c are sequentially increased, the first rectangular block is configured to be inserted into the first countersunk hole, and the second rectangular block is configured to be inserted into the first connection hole 11 a.
The first to third rectangular blocks 83a to 83c form three stepped structures, which have the following advantageous effects: the length of the maximum end (the third rectangular block) can be 14mm, and the maximum end is matched with the upper surface of the Z-shaped plate 11 to ensure the height of the first plug 83; the length of the middle step (the second rectangular block) can be 12mm, and the middle step is matched with the first connecting hole 11a of the Z-shaped plate 11 to ensure the inner diameter of the first connecting hole 11 a; the length of the minimum end (the first rectangular block) can be 9mm, and the minimum end (the first rectangular block) is matched with the first counter sink and used for positioning; fourthly, a through hole (a threaded hole 83d) with the diameter of 5mm is machined in the center of the first plug 83, a bolt 86 for M4 can penetrate through the through hole and be locked with the first round platform 82, and the Z-shaped plate 11 is fixed on the first round platform 82; the first plug 83 can be processed to be a straight-line-shaped part with the width of 7mm, and when the first plug 83 is assembled, the length direction of the third rectangular block can be arranged in the direction perpendicular to the welding line, so that welding deformation can be effectively prevented. After welding, the first plug 83 is rotated by 90 degrees, so that the influence of welding stress on the first plug can be reduced, and the first plug is convenient to take out.
Fig. 10 and 11 are schematic structural views of a second plug 85 according to an embodiment of the present invention. Referring to fig. 10 and 11, the second block 85 is in a straight shape, the second block 85 includes fourth to sixth rectangular blocks 85a to 85c stacked together in sequence, centers of the fourth to sixth rectangular blocks 85a to 85c are aligned, volumes of the fourth to sixth rectangular blocks 85a to 85c are sequentially increased, the fifth rectangular block is adapted to be clamped in the third connecting hole 14a, the L-shaped plate 13 is welded to the rectangular plate 14, and a welding line between the L-shaped plate 13 and the rectangular plate 14 is perpendicular to a length direction of the sixth rectangular block.
It can be seen that the shape of the first plug 83 is similar to the shape of the second plug 85, and the use of the second plug 85 can refer to the use of the first plug 83, and will not be described herein. It should be noted that the weld between the L-shaped plate 13 and the rectangular plate 14 is perpendicular to the length direction of the sixth rectangular block, which can effectively prevent welding deformation.
Illustratively, the assembly fixture for the steering tiller further comprises two U-shaped clamps 87, and the U-shaped clamps 87 are used for clamping the bottom plate 81 and the second plug 85.
The rectangular plate 14 is pressed by the U-shaped pressing plate, so that the side bending or the flatness out-of-tolerance can be prevented.
Fig. 12 is a flowchart of an assembling method of a steering tiller according to an embodiment of the present invention. Referring to fig. 12, the flow of the assembling method of the steering tiller includes the following steps.
And 11, providing an assembly tool for the Z-shaped plate, the cylindrical pin, the L-shaped plate, the rectangular plate and the steering tiller.
The first connecting hole is formed in the first end of the Z-shaped plate, the cylindrical pin hole is formed in the second end of the Z-shaped plate, the step is arranged at the first end of the cylindrical pin, the second connecting hole is formed in the second end of the cylindrical pin along the diameter direction of the cross section, and the rectangular plate is provided with two third connecting holes.
The assembly tool of the steering tiller is the assembly tool of the steering tiller shown in fig. 4 and 5. The structure of the assembly tool of the steering tiller is as described above, and the details are not repeated here.
And 12, placing the second end of the cylindrical pin into a second counter bore of a second circular truncated cone, wherein the length direction of the second connecting hole is parallel to the length extending direction of the transverse end of the bottom plate.
And step 13, fixing the first end of the Z-shaped plate on the first circular truncated cone through the first plug, and placing the second end of the Z-shaped plate on the step of the cylindrical pin through the cylindrical pin hole.
And step 14, fixing the rectangular plate to the bottom plate through the third connecting hole and the second plug.
And step 15, assembling the L-shaped plate between the Z-shaped plate and the rectangular plate.
And step 16, fixing the Z-shaped plate and the cylindrical pin.
And finishing the assembly of the steering tiller.
It should be noted that, the execution order of steps 12 to 14 is not limited in the embodiment of the present invention, and step 14 may also be executed before steps 12 and 13.
It should be noted that, the present invention does not limit the execution order of step 15 and step 16, step 15 may be executed before step 16, step 16 may be executed before step 15, and even step 15 and step 16 may be executed alternately.
As mentioned above, the assembly tool of the steering tiller further comprises a bolt. Accordingly, in step 13, the Z-shaped plate is fixed to the first truncated cone by the bolt and the first plug.
As mentioned above, the assembly fixture for the steering tiller further includes two U-shaped pressing plates, and accordingly, in step 14, the second plug and the bottom plate can be clamped by the U-shaped pressing plates, and the rectangular plate is sandwiched between the second plug and the pressing plates.
As mentioned before, the second jam is the in-line, and the second jam includes the fourth to sixth rectangular block that superposes together in order, and the center of fourth to sixth rectangular block all aligns and the volume of fourth to sixth rectangular block increases in order, and the fifth rectangular block is used for the card to locate the third connecting hole, and L shaped plate and rectangular plate welding, the welding seam between L shaped plate and the rectangular plate with, the length direction of sixth rectangular block is perpendicular. Based on this, step 15 may include the following steps.
And step a, fixing the L-shaped plate between the Z-shaped plate and the rectangular plate by spot welding.
And b, welding a single-side welding seam between the Z-shaped plate and the L-shaped plate, wherein the length direction of the sixth rectangular block is perpendicular to the single-side welding seam between the Z-shaped plate and the L-shaped plate.
And c, welding double-sided welding seams between the L-shaped plate and the rectangular plate through the welding operation window.
Accordingly, when step 15 and step 16 can be performed alternately, step 16 can be performed between step a and step b, step 16 comprising: and after the L-shaped plate is fixed between the Z-shaped plate and the rectangular plate in a spot welding mode, welding a single-side welding seam between the Z-shaped plate and the cylindrical pin.
The welding method is described below. In order to reduce welding deformation, argon tungsten-arc welding with small heat input is adopted for welding. The weld may be a multi-layer weld, for example 3 layers. When welding, the temperature between layers is controlled to be less than or equal to 100 ℃, and GTS-316L (phi 2.0mm) can be adopted as a welding material. Before welding, the part to be welded can be cleaned. For example, the spot to be welded and the dirt such as oil and water within a range of 20 to 30mm around the spot are carefully cleaned with absolute alcohol until the metallic luster is exposed. The welding process parameters (including welding current, current polarity, welding voltage, welding speed, shielding gas flow) are as follows in table 1.
TABLE 1
The preferred order of welding may be: firstly welding the single-side welding seam of the cylindrical pin and the Z-shaped plate, then welding the single-side welding seam of the L-shaped plate and the Z-shaped plate, and finally welding the double-side welding seam of the L-shaped plate and the rectangular plate.
After welding is completed, the welding stress can be removed by hammering, and then the bolt and the U-shaped plate are taken down.
Exemplarily, after the step 16, the assembling method of the steering tiller further includes: after the assembly of the steering tiller is completed, the first plug and the second plug are respectively rotated by 90 degrees, and then the steering tiller obtained through assembly is taken out from an assembly tool of the steering tiller. The first plug and the second plug are rotated by 90 degrees, so that the influence of welding stress on the steering tiller can be reduced, and the steering tiller is convenient to take out.
When the first plug and the second plug are rotated by 90 degrees, if the plugs are not rotated by hands, the wrench can be used for clamping the largest step of the plugs to rotate. And finally, taking the workpiece out of the tool.
In the embodiment of the invention, the assembly tool for the steering tiller comprises a bottom plate, a first circular table, a first plug and a second circular table, wherein the bottom plate is a flat plate, the cross section of the bottom plate is L-shaped, the bottom plate comprises a vertical end and a transverse end which are perpendicular to each other, the first circular table is fixed at the vertical end of the bottom plate, the second circular table is fixed at the joint of the vertical end of the bottom plate and the transverse end of the bottom plate, the transverse end of the bottom plate is provided with a welding operation window and two mounting holes, the welding operation window is positioned between the second circular table and the two mounting holes, the center of the first circular table is provided with a first countersunk hole matched with the first plug, the center of the second circular table is provided with a second countersunk hole, the assembly tool for the steering tiller further comprises two second plugs, and the mounting holes are matched with; the first round platform, the second round platform and the bottom plate respectively guarantee the assembly heights of a Z-shaped plate, a cylindrical pin and a rectangular plate of the steering tiller; the first round table is matched with the first plug for use, and the second round table is added, so that the distance and the direction of the Z-shaped plate and the cylindrical pin can be determined; the distance between the rectangular plate and the cylindrical pin can be determined by the cooperation of the second counter sink on the second circular table and the mounting hole on the bottom plate and the second plug; the welding operation window designed on the bottom plate can facilitate the welding of the rectangular plate and the reverse side of the L-shaped plate of the steering tiller without influencing the welding construction; the assembly of the steering tiller is realized, and the Z-shaped plate, the cylindrical pin and the rectangular plate respectively correspond to the three external interfaces of the steering tiller, so that the dimensional accuracy of the three external interfaces of the steering tiller can be ensured during assembly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an assembly fixture of steering tiller which characterized in that, steering tiller includes: a Z-shaped plate (11), a cylindrical pin (12), an L-shaped plate (13) and a rectangular plate (14), a first connecting hole (11a) is formed in the first end of the Z-shaped plate (11), the second end of the Z-shaped plate (11) is sleeved on the first end of the cylindrical pin (12) and is fixedly connected with the first end of the L-shaped plate (13), the length extension direction of the Z-shaped plate (11) is vertical to the length extension direction of the L-shaped plate (13), a second connecting hole (12a) is formed at the second end of the cylindrical pin (12) along the diameter direction of the cross section, the length extension direction of the L-shaped plate (13) is coincided with the axial direction of the first plug (83), the second end of the L-shaped plate (13) is fixedly connected with the rectangular plate (14), two third connecting holes (14a) are formed in the rectangular plate (14), and the assembly tool for the steering tiller comprises: the bottom plate (81), a first round platform (82), a first plug (83) and a second round platform (84), wherein the bottom plate (81) is a flat plate, the cross section of the bottom plate (81) is L-shaped, the bottom plate (81) comprises a vertical end and a horizontal end which are perpendicular to each other, the first round platform (82) is fixed at the vertical end of the bottom plate (81), the second round platform (84) is fixed at the joint of the vertical end of the bottom plate (81) and the horizontal end of the bottom plate (81), the horizontal end of the bottom plate (81) is provided with a welding operation window (81a) and two mounting holes (81b), the welding operation window (81a) is positioned between the second round platform (84) and the two mounting holes (81b), the center of the first round platform (82) is provided with a first counter sink hole matched with the first plug (83), and the first plug (83) is matched with the first connecting hole (11a), the center of second round platform (84) is equipped with the second counter bore, the second counter bore with the second end of cylindric lock (12) cooperatees, the assembly fixture of steering tiller still includes two second and blocks (85), mounting hole (81b) with second blocks (85) cooperate, second block (85) with third connecting hole (14a) cooperate.
2. The assembly tooling of the steering tiller according to claim 1, wherein the first plug (83) is in a straight shape, the first plug (83) comprises first to third rectangular blocks which are sequentially overlapped together, centers of the first to third rectangular blocks are aligned, volumes of the first to third rectangular blocks are sequentially increased, the first rectangular block (83a) is used for being clamped in the first countersunk hole, and the second rectangular block (83b) is used for being clamped in the first connecting hole (11 a).
3. The assembly fixture for the steering tiller according to claim 2, characterized in that the assembly fixture for the steering tiller further comprises a bolt (86), the first counter bore is matched with the bolt (86), and a threaded hole (83d) matched with the bolt (86) is formed in the first plug (83).
4. The assembly fixture of the steering tiller according to claim 1, wherein the second plug (85) is in a straight shape, the second plug (85) comprises fourth to sixth rectangular blocks which are sequentially stacked together, centers of the fourth to sixth rectangular blocks are aligned, volumes of the fourth to sixth rectangular blocks are sequentially increased, the fifth rectangular block (85b) is used for being clamped in the third connecting hole (14a), the L-shaped plate (13) is welded with the rectangular plate (14), and a welding seam between the L-shaped plate (13) and the rectangular plate (14) is perpendicular to a length direction of the sixth rectangular block (85 c).
5. Assembly tool for a steering tiller according to claim 4, characterised in that the assembly tool for a steering tiller further comprises two U-shaped clamps (87), which U-shaped clamps (87) are used for clamping the base plate (81) and the second plug (85).
6. A method of assembling a steering tiller, comprising:
providing an assembly tool for a Z-shaped plate, a cylindrical pin, an L-shaped plate, a rectangular plate and a steering tiller, wherein a first connecting hole is formed in the first end of the Z-shaped plate, a cylindrical pin hole is formed in the second end of the Z-shaped plate, a step is formed in the first end of the cylindrical pin, a second connecting hole is formed in the second end of the cylindrical pin along the diameter direction of the cross section, two third connecting holes are formed in the rectangular plate, and the assembly tool for the steering tiller is the assembly tool for the steering tiller according to any one of claims 1-5;
placing a second end of the cylindrical pin into a second counter bore of the second round table, wherein the length direction of the second connecting hole is parallel to the length extending direction of the transverse end of the bottom plate;
fixing a first end of the Z-shaped plate on the first round table through the first plug, and placing a second end of the Z-shaped plate on a step of the cylindrical pin through the cylindrical pin hole;
fixing the rectangular plate to the base plate through the third connection hole and the second plug;
fitting the L-shaped plate between the Z-shaped plate and the rectangular plate;
fixing the Z-shaped plate and the cylindrical pin;
and finishing the assembly of the steering tiller.
7. The method of assembling a steering tiller according to claim 6, wherein the second plug is in-line, the second plug includes fourth to sixth rectangular blocks stacked in sequence, centers of the fourth to sixth rectangular blocks are aligned and volumes of the fourth to sixth rectangular blocks are sequentially increased, the fifth rectangular block is adapted to be engaged with the third connection hole, the L-shaped plate is welded to the rectangular plate, and a weld between the L-shaped plate and the rectangular plate is perpendicular to a length direction of the sixth rectangular block.
8. The fitting method of a steering tiller according to claim 7, wherein said fitting of said L-shaped plate between said Z-shaped plate and said rectangular plate includes:
the L-shaped plate is fixed between the Z-shaped plate and the rectangular plate by spot welding,
welding a single-side welding seam between the Z-shaped plate and the L-shaped plate, wherein the length direction of the sixth rectangular block is perpendicular to the single-side welding seam between the Z-shaped plate and the L-shaped plate;
and welding a double-sided welding seam between the L-shaped plate and the rectangular plate through the welding operation window.
9. The method of assembling a steering tiller according to claim 8, wherein said fixing said Z-shaped plate and said cylindrical pin includes:
and welding a single-side welding seam between the Z-shaped plate and the cylindrical pin after the L-shaped plate is fixed between the Z-shaped plate and the rectangular plate by spot welding.
10. The assembling method of a steering tiller according to claim 6, characterized in that the assembling method of a steering tiller further comprises:
after the assembly of the steering tiller is completed, the first plug and the second plug are respectively rotated by 90 degrees, and then the steering tiller obtained through assembly is taken out from an assembly tool of the steering tiller.
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| CN201910980127.7A CN110961838B (en) | 2019-10-15 | 2019-10-15 | Assembly tool and assembly method for steering tiller |
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| CN201910980127.7A CN110961838B (en) | 2019-10-15 | 2019-10-15 | Assembly tool and assembly method for steering tiller |
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| CN110961838A CN110961838A (en) | 2020-04-07 |
| CN110961838B true CN110961838B (en) | 2021-07-27 |
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| US20190225315A1 (en) * | 2017-11-14 | 2019-07-25 | David L. McClung | Clamping assembly |
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| CN110961838A (en) | 2020-04-07 |
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