Press fitting device for center pin bush of traction beam

Abstract

A traction beam center pin bush press-fitting device belongs to the field of train bogie traction beam center pin bush press-fitting auxiliary devices and adopts an inverted T-shaped anti-rotation positioning plate, a bottom rectangular plate of the inverted T-shaped anti-rotation positioning plate is accurately matched with a rectangular key groove of a rubber sleeve, and anti-rotation limiting is achieved after the inverted T-shaped anti-rotation positioning plate is inserted. A central axis positioning screw rod at the top of the positioning plate penetrates through the rubber sleeve and is fixed on the end cover through a locking nut, so that the axial stability is ensured; meanwhile, the upper end of the positioning plate is embedded into an anti-rotation slot of the positioning pressing sleeve device to form a double anti-rotation structure; the positioning pressing sleeve device is in sliding fit with a press fitting guide column through guide sliding blocks on the two sides, and accurate coaxial positioning and vertical guiding of the center sleeve and the traction beam are guaranteed; by means of the design, the center sleeve and the traction beam fixed to the tool base can achieve deflection-free vertical displacement guiding, press-fitting deflection can be effectively eliminated, coaxial precision and the qualified rate are remarkably improved, rework is avoided, production efficiency is improved, cost is reduced, and economic value is created.

Description

Technical Field

[0001] The invention belongs to the field of auxiliary devices for press-fitting the center pin sleeve of a train bogie traction beam, and particularly relates to a press-fitting device for the center pin sleeve of a traction beam. Background Art

[0002] The structure of the center pin sleeve of a certain type of rail train is as Figures 1 to 8 shown. The center pin sleeve of this type of traction beam includes a traction beam A and a center sleeve B. The traction beam A is an integrally formed casting, and its main structure is a cylindrical sleeve A4. At the bottom of the inner side wall of the cylindrical sleeve A4, there is a retaining ring A5 with a minimum inner diameter of R1. On the outer diameter side wall of the cylindrical sleeve A4, there are three pairs of connecting seat groups, and each group of connecting seats includes two connecting seat bodies that are mirror-symmetrical about the axis of the cylindrical sleeve A4. Among them, the lower connecting seat group A1 and the upper connecting seat group A2 are arranged up and down along the axis of the cylindrical sleeve A4, and their projections in the vertical direction coincide. The middle connecting seat group A3 is located in the middle section of the outer diameter side wall of the cylindrical sleeve A4, and the projection of the middle connecting seat group A3 in the vertical direction is perpendicular to the projection of the upper connecting seat group A2 in the vertical direction. The first outer end face G of the upper connecting seat group A2 and the second outer end face K of the middle connecting seat group A3 are perpendicular to each other. Connecting seat body bolt holes A1-1 parallel to the first outer end face G are provided on the side wall end face of the lower connecting seat group A1. The center sleeve B includes a metal cylinder B1 and a rubber sleeve B2 that are nested and vulcanized and fixedly connected to each other. A counterbore B2-2 and an inverted conical hole B2-1 that communicate with each other are provided in the center of the rubber sleeve B2. The diameter of the counterbore B2-2 is R2, and a rectangular keyway B2-2-1 along the diameter direction of the counterbore B2-2 is provided on the inner diameter side wall at the bottom of the counterbore B2-2. The vertical height value of the rectangular keyway B2-2-1 is H2, and the slotting length value of the rectangular slot is L1.

[0003] According to the theoretical design of the drawing, when the draft gear A and the center sleeve B are coaxially press-fitted and combined, the grooving direction of the rectangular keyway B2-2-1 needs to be perpendicular to the second outer end face K. However, the current press-fitting process of the center pin sleeve of the bogie draft gear still uses the old scribing positioning method and press-fitting process. Since the top circular surface of the center sleeve B, the circumferential outer side wall of the metal cylinder B1, and the inner side wall of the conical surface of the inverted conical hole B2-1 are all arc-shaped surfaces, and the press is used to press it into the cylindrical sleeve A4 from the top of the center sleeve B, and the counterbore B2-2 is located below the narrowest diameter port of the inverted conical hole B2-1. Therefore, the existing scribing positioning methods cannot penetrate into the counterbore B2-2 during the press-fitting process without interfering with and blocking the press, and thus the structure of the rectangular keyway B2-2-1 cannot be used as a reference plane and positioning datum. At the same time, the existing method of simply scribing on the outer surface of the workpiece as a positioning reference datum has a large error, and since the center sleeve B lacks an anti-rotation mechanism during the vertical pressing process of the press, when the draft gear A and the center sleeve B are coaxially press-fitted and combined, the center sleeve B often rotates around its own axis, resulting in manufacturing tolerances. Finally, the grooving direction of the rectangular keyway B2-2-1 cannot be perpendicular to the second outer end face K as required by the drawing design, and as a result, the product cannot pass the qualified acceptance, and the problem of reworking by removing the sleeve and pressing it again often occurs, significantly reducing the production efficiency and causing economic losses.

[0004] On the other hand, the center sleeve B is a barrel-shaped structure with a weight close to 20 kilograms, and its outer wall is smooth and lacks ideal gripping points. The existing manufacturing process requires the operator to manually carry a large number of center sleeves B repeatedly to place them on the workpieces on the workbench of the vertical press. Such manual operations have a high operation frequency and high labor intensity, and are likely to cause damage to the lumbar health of the operator. Summary of the Invention

[0005] In order to solve the problems in the manufacturing process of the existing center pin sleeve of the draft gear, due to the relatively unique structures of the center sleeve and the rectangular keyway, it is impossible to apply effective anti-rotation positioning and vertical guiding positioning to the center sleeve using conventional methods, resulting in the center sleeve being prone to rotating around its own axis during the vertical press-fitting process and causing manufacturing tolerances, resulting in the grooving direction of the rectangular keyway not being able to be perpendicular to the second outer end face as required by the drawing design, and further resulting in the coaxial press-fitting combination product of the draft gear and the center sleeve not being able to pass the qualified acceptance, and the problem of reworking by removing the sleeve and pressing it again often occurring, significantly reducing the production efficiency and causing economic losses; and the technical problem that the existing manufacturing process requires the operator to manually carry a large number of center sleeves B repeatedly to place them on the workpieces on the workbench of the vertical press. Such manual operations have a high operation frequency and high labor intensity, and are likely to cause damage to the lumbar health of the operator, the present invention provides a press-fitting device for the center pin sleeve of the draft gear.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] A center pin sleeve pressing device for a draft gear, characterized in that: the device includes a tooling base, two pressing guide columns, a positioning pressing sleeve device, two guide slider devices and a central axis positioning plate device. The bottoms of the two pressing guide columns are fixedly connected to the tooling base; the slider ends of the guide slider devices correspond to the pressing guide columns one by one and are slidably connected to the vertical slideways of the pressing guide columns. The slider screws of the guide slider devices are detachably fixedly connected to the circumferential outer side wall of the positioning pressing sleeve device; the two guide slider devices are symmetrically fixed on both sides of the positioning pressing sleeve device; the positioning pressing sleeve device is a barrel structure with an end cover, and a rectangular end cover anti-rotation slot and a central axis guide screw through hole are provided in the center of the end cover; the upper part of the central axis positioning plate device is provided with a central axis positioning screw, and the top end of the central axis positioning screw passes through the central axis guide screw through hole on the end cover of the positioning pressing sleeve device and is fixedly connected to the end cover through a locking nut.

[0008] The positioning pressing sleeve device includes an integrally formed barrel and an end cover. A round table protruding outward from the barrel is provided in the middle of the end cover; a rectangular end cover anti-rotation slot and a central axis guide screw through hole are respectively provided in the center of the round table; the end cover anti-rotation slot is provided on the outer end surface of the round table and their geometric centers coincide. The central axis guide screw through hole coaxially penetrates the round table; the cone angle of the round table is the same as the cone angle of the inverted conical hole, and the diameter of the bottom surface of the round table is the same as the diameter of the top end of the inverted conical hole.

[0009] The guide slider device includes a T-shaped head slider and a slider horizontal double-headed screw. The slider horizontal double-headed screw is detachably and vertically fixedly connected to the outer end surface of the T-shaped head slider, and the T-shaped head slider is slidably connected to the vertical T-shaped groove slideway of the pressing guide column.

[0010] A set of two guide slider docking threaded holes and a set of two handle threaded holes with mutually perpendicular axes are provided on the circumferential outer side wall of the barrel; the axes of the two guide slider docking threaded holes are parallel to the slotting direction of the end cover anti-rotation slot; the axes of the two handle threaded holes are perpendicular to the slotting direction of the end cover anti-rotation slot; the slider screw is threadedly connected to the guide slider docking threaded hole in a detachable manner; the handle threaded hole is threadedly connected to the corresponding handle.

[0011] Optionally, the guide slider device can also be simplified to an alternative structure that only includes a horizontal single-headed screw. The threaded end of the horizontal single-headed screw is threadedly connected to the guide slider docking threaded hole in a detachable manner; the smooth rod end of the horizontal single-headed screw is inserted into the vertical slideway of the pressing guide column in a horizontal posture, and they are slidably connected along the vertical direction.

[0012] The central axis positioning plate device further includes an inverted T-shaped anti-rotation positioning plate. The vertical part of the T-shaped anti-rotation positioning plate is a rectangular plate member, and two card slot anti-rotation stoppers that extend horizontally from the bottom of the anti-rotation positioning plate to the left and right sides respectively and are mirror-symmetrical to each other; the central axis positioning screw is welded and fixed at the center of the upper end face of the anti-rotation positioning plate, and the rotation axis of the central axis positioning screw coincides with the longitudinal central axis of the anti-rotation positioning plate; the locking nut is threadedly connected to the top end of the central axis positioning screw.

[0013] The thickness value of the rectangular plate member, the width value of the rectangular keyway, and the width value of the end cover anti-rotation slot are all d; the height value H3 of the card slot anti-rotation stopper is the same as the vertical height value H2 of the rectangular keyway, and the distal length value L2 of the two left and right card slot anti-rotation stoppers is 99% of the slotting length value L1 of the rectangular keyway; the width value L4 of the rectangular plate member is the same as the slotting length L3 of the end cover anti-rotation slot; the total height value H4 after the rectangular plate member and the central axis positioning screw are assembled is greater than the axial height value of the center sleeve, and H4 is less than the sum H5 of the axial heights after the center sleeve and the positioning pressing sleeve device are coaxially vertically assembled.

[0014] The tooling base includes a rectangular base plate, a central positioning disk, two sets of connecting seat anti-rotation positioning mechanisms, and four lifting rings; the central positioning disk is fixedly connected to the geometric center of the upper end face of the base plate, the bottoms of the two pressing and guiding columns and the bottoms of the two sets of connecting seat anti-rotation positioning mechanisms are respectively fixedly connected to the tooling base, and the two pressing and guiding columns and the two sets of connecting seat anti-rotation positioning mechanisms are arranged in a cross orientation around the central positioning disk; the four lifting rings are respectively fixedly connected to the four top corners of the rectangular base plate.

[0015] The connecting seat anti-rotation positioning mechanism includes two connecting seat stoppers with horizontal bolt through holes and stopper fastening bolts; the spacing value of the two connecting seat stoppers is 105% of the width value of the lower connecting seat group; the central positioning disk has a diameter of R3, and R2 ≤ R3 ≤ R1.

[0016] The beneficial effects of the present invention are as follows: For the press-fitting device of the center pin sleeve of the drawbar beam, the bottom of its inverted T-shaped anti-rotation positioning plate has a rectangular plate member that matches the shape and size of the rectangular keyway. When the anti-rotation positioning plate and the central axis positioning screw fixedly connected to its top are inserted into the rubber sleeve from the bottom up through the counterbore, the rectangular plate member can perfectly fit into the interior of the rectangular keyway. At the same time, the upper end of the anti-rotation positioning plate can be inserted into the end cover anti-rotation slot designed to correspond and match with the bottom of the positioning bushing device, thereby applying anti-rotation limits to the positioning bushing device and the rubber sleeve respectively by means of the anti-rotation positioning plate. The central axis positioning screw fixedly connected to the top of the central axis of the anti-rotation positioning plate can extend out from the top of the rubber sleeve and pass through the through-hole of the central axis guiding screw, so as to lock the top end of the central axis positioning screw to the upper end face of the end cover with the help of a locking nut. The positioning bushing device is respectively slidably connected to two press-fitting guiding columns through guiding slider devices fixedly connected to both sides of the outer diameter, thereby realizing the coaxial positioning, anti-rotation fixation and vertical displacement guiding between the positioning bushing device and the center sleeve, and further enabling the center sleeve to achieve non-deflected vertical displacement guiding with the drawbar beam fixed on the tooling base, greatly improving the coaxial press-fitting accuracy and acceptance pass rate, eliminating the phenomenon of reworking due to sleeve removal and heavy pressing, and significantly improving production efficiency, saving production costs and creating economic value.

[0017] In addition, the lifting rings distributed at the four corners of the tooling base can be used for hoisting the drawbar beam or for overall lifting and transferring the center pin sleeve of the drawbar beam after press-fitting, thereby reducing the labor intensity of the operator and avoiding workpiece collision and scratching, and further improving the production safety of the product and the operator.

[0018] The press-fitting device of the center pin sleeve of the drawbar beam of the present invention also has the advantages of simple and practical structure, convenient operation, low cost, and being easy to popularize and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the existing center pin sleeve of the drawbar beam;

[0020] Figure 2 is Figure 1 the top view of

[0021] Figure 3 is the exploded assembly schematic diagram of the existing drawbar beam and the center sleeve under the A-A section in Figure 2 ;

[0022] Figure 4 is the exploded assembly schematic diagram of the existing drawbar beam and the center sleeve from a three-dimensional perspective;

[0023] Figure 5 is the exploded assembly schematic diagram of the existing drawbar beam and the center sleeve from another upward three-dimensional perspective;

[0024] Figure 6 is Figure 5Partial enlarged view of part I

[0025] Figure 7 is Figure 2 the sectional view taken along B-B in

[0026] Figure 8 is Figure 7 the perspective view under the upward view;

[0027] Figure 9 is the perspective view of the center pin bushing pressing device of the present invention;

[0028] Figure 10 is the preliminary exploded assembly schematic diagram of the center pin bushing pressing device of the present invention;

[0029] Figure 11 is the front view and side view of the center pin bushing pressing device of the present invention;

[0030] Figure 12 is the exploded assembly schematic diagram of the vertical sliding bushing mechanism and the central axis positioning plate device of the present invention;

[0031] Figure 13 is the assembly schematic diagram of the tooling base and two pressing guide columns of the present invention;

[0032] Figure 14 is of the present invention Figure 13 top view;

[0033] Figure 15 is the assembly schematic diagram of the positioning bushing device and the central axis positioning plate device of the present invention;

[0034] Figure 16 is Figure 15 the exploded view of the shown structure;

[0035] Figure 17 is the bottom view of the positioning bushing device of the present invention and its corresponding perspective view;

[0036] Figure 18 is the sectional view taken along C-C of the positioning bushing device of the present invention and its corresponding perspective view;

[0037] Figure 19 is the perspective view corresponding to the positioning bushing device of the present invention under the D-D section;

[0038] Figure 20 is the three-view drawing of the positioning bushing device of the present invention and its corresponding perspective view under the D-D section;

[0039] Figure 21 is the perspective view and exploded view of the central axis positioning plate device of the present invention;

[0040] Figure 22It is the side view, top view and F-F sectional view of the central axis positioning plate device of the present invention;

[0041] Figure 23 It is the exploded assembly schematic diagram of the corresponding relationship between the card slot anti-rotation block and the rectangular key slot of the present invention;

[0042] Figure 24 It is the schematic diagram of the bottom view principle when the anti-rotation positioning plate and the central sleeve of the present invention are assembled and then further passed through the lock nut and the positioning bushing device;

[0043] Figure 25 It is Figure 24 The three-dimensional structure diagram of the shown structure from the top view perspective;

[0044] Figure 26 It is the axial sectional view schematic diagram after the positioning bushing device and the central axis positioning plate device of the present invention are respectively assembled with the central sleeve;

[0045] Figure 27 It is Figure 26 The isometric three-dimensional diagram of

[0046] Figure 28 It is Figure 26 The application schematic diagram of the shown rear central sleeve further slidingly connected with two press-fitting guide columns through two simplified horizontal single-headed screws;

[0047] Figure 29 It is the three-dimensional diagram and exploded diagram when the un-simplified version of the guide slider device including the T-shaped head slider and the slider horizontal double-headed screw of the present invention is assembled with the press-fitting guide column;

[0048] Figure 30 It is the schematic diagram of the principle when the tooling base of the present invention performs anti-rotation positioning on the traction beam;

[0049] Figure 31 It is the application schematic diagram when the traction beam center pin sleeve press-fitting device of the present invention performs press-fitting positioning on the traction beam center pin sleeve. Specific embodiments

[0050] The present invention will be further described in detail below with reference to the accompanying drawings.

[0051] As Figures 9 to 22As shown in the figure, the center pin bushing press-fitting device of the present invention includes a tooling base 1, two press-fitting guide columns 2, a positioning press sleeve device 3, two guide slider devices 4, and a central axis positioning plate device 5. The bottoms of the two press-fitting guide columns 2 are fixedly connected to the tooling base 1; the slider ends of the guide slider devices 4 correspond to the press-fitting guide columns 2 one by one and are slidably connected. The slider screws 4-2 of the guide slider devices 4 are detachably fixedly connected to the circumferential outer side wall of the positioning press sleeve device 3; the two guide slider devices 4 are symmetrically fixed on both sides of the positioning press sleeve device 3, and the three of them together form a vertical sliding press sleeve mechanism; the positioning press sleeve device 3 is a barrel structure with an end cap. A rectangular end cap anti-rotation slot 3-2-2 and a central axis guide screw through hole 3-2-1 are provided in the center of the end cap 3-2; the upper part of the central axis positioning plate device 5 is provided with a central axis positioning screw 5-2. The top end of the central axis positioning screw 5-2 passes through the central axis guide screw through hole 3-2-1 on the end cap of the positioning press sleeve device 3 and is fixedly connected to the end cap through a locking nut 5-3.

[0052] The positioning press sleeve device 3 includes an integrally formed barrel 3-1 and an end cap 3-2. A round table 3-2-3 protruding outward from the barrel 3-1 is provided in the middle of the end cap 3-2; a rectangular end cap anti-rotation slot 3-2-2 and a central axis guide screw through hole 3-2-1 are respectively provided in the center of the round table 3-2-3; the end cap anti-rotation slot 3-2-2 is opened on the outer end face of the round table 3-2-3 and their geometric centers coincide. The central axis guide screw through hole 3-2-1 coaxially penetrates the round table 3-2-3; the conical angle of the round table 3-2-3 is the same as the conical angle of the inverted conical hole B2-1, and the diameter of the bottom surface of the round table 3-2-3 is the same as the diameter of the top end of the inverted conical hole B2-1.

[0053] The guide slider device 4 includes a T-shaped head slider 4-1 and a slider horizontal double-headed screw 4-2. The slider horizontal double-headed screw 4-2 is detachably and vertically fixedly connected to the outer end face of the T-shaped head slider 4-1 in a horizontal posture, and the T-shaped head slider 4-1 is slidably connected to the vertical T-shaped groove slideway of the press-fitting guide column 2.

[0054] A set of two guide slider docking threaded holes 3-1-1 and a set of two handle threaded holes 3-1-2 with mutually perpendicular axes are provided on the circumferential outer side wall of the barrel 3-1; the axes of the two guide slider docking threaded holes 3-1-1 are parallel to the slotting direction of the end cap anti-rotation slot 3-2-2; the axes of the two handle threaded holes 3-1-2 are perpendicular to the slotting direction of the end cap anti-rotation slot 3-2-2; the slider screw 4-2 is threadedly connected to the guide slider docking threaded hole 3-1-1 in a detachable manner; the handle threaded hole 3-1-2 is threadedly connected to the corresponding handle 3-3.

[0055] Optionally, the guide slider device 4 can also be simplified to an alternative structure that only includes a horizontal single-head screw 4-3, and the threaded end of the horizontal single-head screw 4-3 is threadedly connected to the threaded hole 3-1-1 of the guide slider in a detachable manner; the bare rod end of the horizontal single-head screw 4-3 is inserted into the vertical slide of the press-fit guide column 2 in a horizontal posture, and the two are slidably connected along the vertical direction.

[0056] The central axis positioning plate device 5 also includes an inverted T-shaped anti-rotation positioning plate 5-1, the vertical part of the T-shape of the anti-rotation positioning plate 5-1 is a rectangular plate 5-1-1, and two anti-rotation blocks 5-1-2 extending horizontally to the left and right sides respectively from the bottom of the anti-rotation positioning plate 5-1 and forming mirror-symmetrical grooves; the central axis positioning screw 5-2 is welded and fixedly connected to the center of the upper end surface of the anti-rotation positioning plate 5-1, and the rotation axis of the central axis positioning screw 5-2 coincides with the longitudinal central axis of the anti-rotation positioning plate 5-1; the locking nut 5-3 is threadedly connected to the top end of the central axis positioning screw 5-2.

[0057] The plate thickness value of the rectangular plate 5-1-1, the width value of the rectangular keyway B2-2-1 and the width value of the end cover anti-rotation slot 3-2-2 are all d; the height value H3 of the slot anti-rotation block 5-1-2 is the same as the vertical height value H2 of the rectangular keyway B2-2-1, and the distal length value L2 of the left and right slot anti-rotation blocks 5-1-2 is 99% of the slot length value L1 of the rectangular keyway B2-2-1; the width value L4 of the rectangular plate 5-1-1 is the same as the slot length L3 of the end cover anti-rotation slot 3-2-2; the total height value H4 after the rectangular plate 5-1-1 and the center axis positioning screw 5-2 are assembled is greater than the axial height value of the center sleeve B, and H4 is less than the sum of the axial heights H5 of the center sleeve B and the positioning sleeve device 3 after coaxial vertical assembly.

[0058] The tooling base 1 includes a rectangular base plate, a center positioning disk 1-1, two sets of connecting seat anti-rotation positioning mechanisms 1-2 and four lifting rings 1-3; the center positioning disk 1-1 is fixedly connected to the geometric center of the upper end surface of the base plate, the bottoms of the two press-fit guide columns 2 and the bottoms of the two sets of connecting seat anti-rotation positioning mechanisms 1-2 are respectively fixedly connected to the tooling base 1, and the two press-fit guide columns 2 and the two sets of connecting seat anti-rotation positioning mechanisms 1-2 are arranged in a cross shape around the center positioning disk 1-1; the four lifting rings 1-3 are respectively fixedly connected to the four top corners of the rectangular base plate.

[0059] The anti-rotation positioning mechanism 1-2 of the connecting seat includes one or two connecting seat stoppers 1-2-1 with horizontal bolt through-holes and stopper fastening bolts 1-2-2; the distance value between the two connecting seat stoppers 1-2-1 is 105% of the width value of the lower connecting seat group A1; the central positioning disc 1-1 has a diameter of R3, and R2 ≤ R3 ≤ R1; the stopper fastening bolt 1-2-2 and the horizontal bolt through-hole on the connecting seat stopper 1-2-1 together form a lead screw tightening mechanism based on the thread principle.

[0060] When specifically applying the press-fitting device for the center pin sleeve of the draft gear of the present invention, first, as Figures 23 to 27 shown, insert the anti-rotation positioning plate 5-1 from the bottom of the counterbore B2-2 into the rubber sleeve B2 from bottom to top, so that the top of the central axis positioning screw 5-2 passes through the top of the rubber sleeve B2, and make the left and right two card slot anti-rotation stoppers 5-1-2 respectively embed into the corresponding rectangular key slots B2-2-1. Then, as Figures 26 to 29 shown, coaxially assemble the positioning press sleeve device 3 on the top of the center sleeve B, so that the top of the central axis positioning screw 5-2 passes through the central axis guiding screw through-hole 3-2-1 from bottom to top and make the upper end of the anti-rotation positioning plate 5-1 insert into the end cover anti-rotation slot 3-2-2, and then lock the top of the central axis positioning screw 5-2 with the upper end face of the end cover 3-2 with a locking nut 5-3, then the coaxial positioning and anti-rotation fixed connection of the positioning press sleeve device 3 and the center sleeve B can be realized.

[0061] Next, as Figure 30 shown, place the draft gear A on the tooling base 1, so that the retaining ring A5 and the central positioning disc 1-1 are coaxially nested. Then, use the lead screw tightening mechanism based on the thread principle formed by the stopper fastening bolt 1-2-2 and the connecting seat stopper 1-2-1 to clamp and fix the two side wall end faces of the lower connecting seat group A1 respectively, so as to realize the anti-rotation positioning of the tooling base 1 for the draft gear A.

[0062] Finally, as Figure 31 shown, coaxially place the center sleeve B connected with the positioning press sleeve device 3 above the cylindrical sleeve A4 to be press-fitted. Then, respectively slidably connect the slider horizontal double-headed screw 4-2 fixed on both sides of the positioning press sleeve device 3 with the vertical guiding chutes 2-1 on the two press-fitting guiding columns 2, or slidably connect the slider horizontal double-headed screw 4-2 with the corresponding vertical T-shaped guiding chute on the press-fitting guiding column 2 through the T-shaped head slider 4-1, then the press-fitting preparation work of the draft gear center pin sleeve press-fitting device and the center sleeve B can be completed, so as to vertically press the draft gear A with a press and realize the coaxial press-fitting of the center sleeve B and the draft gear A, and further complete the manufacturing process of the draft gear center pin sleeve.

Claims

1. The traction beam center pin sleeve press-fitting device is characterized by: The device comprises a tooling base (1), two press-fit guide columns (2), a positioning sleeve device (3), two guide slider devices (4) and a central axis positioning plate device (5); the bottoms of the two press-fit guide columns (2) are fixedly connected to the tooling base (1); the slider ends of the guide slider devices (4) correspond one-to-one with the press-fit guide columns (2) and are slidably connected to the vertical slideways of the press-fit guide columns (2); the slider screws (4-2) of the guide slider devices (4) are detachably fixedly connected to the circumferential outer wall of the positioning sleeve device (3); the two guide slider devices ( 4) is fixed symmetrically on both sides of the positioning sleeve device (3); the positioning sleeve device (3) is a tube structure with an end cover, and a rectangular end cover anti-rotation slot (3-2-2) and a center axis guide screw through hole (3-2-1) are opened in the center of the end cover (3-2); the upper part of the center axis positioning plate device (5) is provided with a center axis positioning screw (5-2), and the top end of the center axis positioning screw (5-2) passes through the center axis guide screw through hole (3-2-1) on the end cover of the positioning sleeve device (3) and is fixedly connected to the end cover through a locking nut (5-3).

2. The traction beam center pin sleeve press-fitting device according to claim 1, characterized in that: The positioning sleeve device (3) comprises an integrally formed riser (3-1) and an end cover (3-2); a truncated cone (3-2-3) protruding toward the outside of the riser (3-1) is provided in the middle of the end cover (3-2); a rectangular end cover anti-rotation slot (3-2-2) and a center axis guide screw through hole (3-2-1) are respectively provided at the center of the truncated cone (3-2-3); the end cover anti-rotation slot (3-2-2) is provided on the outer end surface of the truncated cone (3-2-3) and the geometric centers thereof coincide with each other, and the center axis guide screw through hole (3-2-1) coaxially penetrates the truncated cone (3-2-3); the cone angle of the truncated cone (3-2-3) is the same as the cone angle of the inverted cone hole (B2-1), and the diameter of the bottom surface of the truncated cone (3-2-3) is the same as the diameter of the top end of the inverted cone hole (B2-1).

3. The traction beam center pin sleeve press-fitting device according to claim 2, characterized in that: The guide slider device (4) comprises a T-head slider (4-1) and a slider horizontal double-head screw (4-2); the slider horizontal double-head screw (4-2) is vertically fixedly connected to the outer end surface of the T-head slider (4-1) in a detachable horizontal posture; the T-head slider (4-1) is slidably connected to the vertical T-slot slideway of the press-fit guide column (2).

4. The traction beam center pin sleeve press-fitting device according to claim 3, characterized in that: A group of two guide slider butt threaded holes (3-1-1) and a group of two handle threaded holes (3-1-2) whose axes are perpendicular to each other are provided on the circumferential outer wall of the casing (3-1); the axes of the two guide slider butt threaded holes (3-1-1) are parallel to the slotting direction of the end cover anti-rotation slot (3-2-2); the axes of the two handle threaded holes (3-1-2) are perpendicular to the slotting direction of the end cover anti-rotation slot (3-2-2); the slider screw (4-2) is threadedly connected to the guide slider butt threaded holes (3-1-1) in a detachable manner; and the handle threaded holes (3-1-2) are threadedly connected to the handles (3-3) in a one-to-one correspondence.

5. The traction beam center pin sleeve press-fitting device according to claim 4, characterized in that: Optionally, the guide slider device (4) can also be simplified to an alternative structure that only includes a horizontal single-head screw (4-3), and the threaded end of the horizontal single-head screw (4-3) is threadedly connected to the threaded hole (3-1-1) of the guide slider in a detachable manner; the bare rod end of the horizontal single-head screw (4-3) is inserted into the vertical slideway of the press-fit guide column (2) in a horizontal posture, and the two are slidably connected along the vertical direction.

6. The traction beam center pin sleeve press-fitting device according to claim 4, characterized in that: The central axis positioning plate device (5) also includes an inverted T-shaped anti-rotation positioning plate (5-1), the vertical portion of the T-shape of the anti-rotation positioning plate (5-1) being a rectangular plate (5-1-1), and two anti-rotation blocking blocks (5-1-2) extending horizontally from the bottom of the anti-rotation positioning plate (5-1) to the left and right sides respectively and forming mirror-symmetrical grooves; the central axis positioning screw (5-2) is welded and fixedly connected to the center of the upper end surface of the anti-rotation positioning plate (5-1), and the rotation axis of the central axis positioning screw (5-2) coincides with the longitudinal central axis of the anti-rotation positioning plate (5-1); and the locking nut (5-3) is threadedly connected to the top end of the central axis positioning screw (5-2).

7. The traction beam center pin sleeve press-fitting device according to claim 6, characterized in that: The thickness of the rectangular plate (5-1-1), the width of the rectangular keyway (B2-2-1), and the width of the end cover anti-rotation slot (3-2-2) are all d; the height H3 of the slot anti-rotation block (5-1-2) is the same as the vertical height H2 of the rectangular keyway (B2-2-1), and the distal length L2 of the left and right slot anti-rotation blocks (5-1-2) is 99% of the slot length L1 of the rectangular keyway (B2-2-1); the width L4 of the rectangular plate (5-1-1) is the same as the slot length L3 of the end cover anti-rotation slot (3-2-2); the total height H4 of the rectangular plate (5-1-1) and the center axis positioning screw (5-2) after assembly is greater than the axial height of the center sleeve (B), and H4 is less than the sum of the axial heights H5 of the center sleeve (B) and the positioning sleeve device (3) after coaxial vertical assembly.

8. The traction beam center pin sleeve press-fitting device according to claim 7, characterized in that: The tooling base (1) comprises a rectangular base plate, a central positioning disk (1-1), two groups of connecting seat anti-rotation positioning mechanisms (1-2) and four lifting rings (1-3); the central positioning disk (1-1) is fixedly connected to the geometric center of the upper end surface of the base plate, the bottoms of the two press-fit guide columns (2) and the bottoms of the two groups of connecting seat anti-rotation positioning mechanisms (1-2) are respectively fixedly connected to the tooling base (1), and the two press-fit guide columns (2) and the two groups of connecting seat anti-rotation positioning mechanisms (1-2) are arranged in a cross orientation around the central positioning disk (1-1); the four lifting rings (1-3) are respectively fixedly connected to the four top corners of the rectangular base plate.

9. The traction beam center pin sleeve press-fitting device according to claim 8, characterized in that: The connecting seat anti-rotation positioning mechanism (1-2) comprises a connecting seat stopper (1-2-1) with two horizontal bolt through holes and a stopper fastening bolt (1-2-2); the spacing value of the two connecting seat stopper blocks (1-2-1) is 105% of the width value of the lower connecting seat group (A1); the central positioning plate (1-1) has a diameter of R3, and R2≤R3≤R1.

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