Bogie connecting rod rubber node press-fitting tool

Abstract

The utility model discloses a bogie connecting rod rubber node press-fitting tool, and relates to the technical field of motor train unit maintenance. The rotating base is rotatably arranged on the fixed base through a cylindrical pin; the pair of rod body positioning seats are arranged, positioning open holes are formed in the tops of the rod body positioning seats, reset springs are arranged in the positioning open holes, positioning pins are arranged on the top surfaces of the reset springs, and the positioning pins can move up and down in the positioning open holes under the support of the reset springs; the four guide columns are symmetrically and vertically arranged around the two rod body positioning seats in pairs respectively; and one of the two pressing heads corresponds to the two guide columns, and the side walls of the pressing heads are detachably connected with the corresponding guide columns in an up-down sliding mode. Through the specific fixing structure and the press-fitting structure, the requirement that the flat plane and the center line of the rod body hole form a specific included angle in the press-fitting process of the connecting rod rubber node is met, the working efficiency is effectively improved, and the product quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of EMU maintenance, and in particular to a bogie connecting rod rubber node press-fitting tool. Background Art

[0002] At present, the connecting rod of the EMU bogie is composed of a rubber node and a rod body. The rubber node is pressed into the circular holes at both ends of the rod body through interference fit. The rubber node is rubber vulcanized on a metal mandrel. The two ends of the mandrel are processed into a flat shape, and the flat surface forms a specific angle with the center line of the rod body hole. In the axial direction, the protruding parts at both ends of the rubber node are symmetrically distributed with the rod body as the center.

[0003] When press-fitting the node, the rod positioning method is difficult to determine, and the spatial dimensions are difficult to locate. The specific angle is the angle between the center of the plane protruding at both ends of the core shaft of the rubber node and the center line of the rod hole. These two measured elements are on different planes. This dimension is a spatial position dimension and is difficult to locate. Therefore, there are certain inconveniences in the press-fitting work.

[0004] Therefore, in order to meet actual needs, a bogie connecting rod rubber node press-fitting tool is provided. Summary of the invention

[0005] In view of the defects existing in the prior art, the purpose of this application is to provide a bogie connecting rod rubber node pressing tool, which, through a specific fixing structure and pressing structure, meets the requirement that the flat surface and the center line of the rod body hole form a specific angle during the pressing process of the connecting rod rubber node, effectively improves work efficiency and ensures product quality.

[0006] In order to achieve the above objectives, the technical solution adopted by this application is:

[0007] The present application provides a bogie connecting rod rubber node press-fitting tool, the press-fitting tool comprising:

[0008] Fixed base;

[0009] A rotating base rotatably arranged on the fixed base via a cylindrical pin;

[0010] A pair of rod body positioning seats are provided, wherein a positioning opening is provided at the top of the rod body positioning seat, a reset spring is provided inside the positioning opening, a positioning pin is provided on the top surface of the reset spring, a positioning pin circular hole is provided at the center of the positioning pin for the protruding part of the rubber node core shaft to pass through, and the positioning pin can move up and down in the positioning opening under the support of the reset spring;

[0011] Four guide posts are symmetrically arranged in pairs around the two rod positioning seats;

[0012] Two pressure heads, one pressure head corresponds to the two guide posts, the side wall of the pressure head is detachably connected to the corresponding guide posts in an up-and-down sliding manner, the pressure head is provided with a long strip through groove with a preset deflection angle, and the bottom surface is provided with a countersunk hole for clamping with a rubber node; wherein,

[0013] When the pressure head is disposed on the corresponding guide column, the center of the countersunk hole of the pressure head coincides with the center of the positioning opening, the return spring, the positioning pin and the circular hole of the positioning pin.

[0014] On the basis of the above technical solution, the pressing tool further comprises:

[0015] A clamping handle disposed on the rotating base;

[0016] The clamping handle comprises:

[0017] A handle pole erected on the rotating base;

[0018] A handle clamping rod is hinged on the handle upright, and the free end of the handle clamping rod is used to clamp the bogie connecting rod to be pressed.

[0019] On the basis of the above technical solution, the size of the positioning opening is configured so that its side wall cooperates with the clamping handle to limit the up and down movement of the bogie connecting rod to be pressed.

[0020] On the basis of the above technical solution, a return spring cover is provided at the bottom of the positioning opening;

[0021] The bottom end of the return spring is connected to the top surface of the return spring cover.

[0022] On the basis of the above technical solution, the reset spring cover is arranged on the rod body positioning seat by means of a plurality of countersunk screws.

[0023] On the basis of the above technical solution, the pressure head is a diamond-shaped structure, and a set of diagonal ends are provided with pressure head through holes;

[0024] The pressure head is slidably mounted on the corresponding guide column through the pressure head through hole.

[0025] Based on the above technical solution, the preset deflection angle is 3°.

[0026] Based on the above technical solution, the cylindrical pin is located at the center of the rotating base and the fixed base.

[0027] Based on the above technical solution, the clamping handle is located on one side of the rotating base.

[0028] Compared with the prior art, the advantages of this application are:

[0029] The present application uses a specific fixing structure and a press-fitting structure to meet the requirement that the flat surface and the center line of the rod body hole form a specific angle during the press-fitting process of the connecting rod rubber node, thereby effectively improving work efficiency and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the assembly structure of a fixed base, a rotating base, a rod body positioning seat and a pressing handle in a bogie connecting rod rubber node press-fitting tool according to an embodiment of the present application;

[0032] Figure 2 A top view of a bogie connecting rod rubber node press-fitting tool according to an embodiment of the present application;

[0033] Figure 3 This is a schematic diagram of the assembly structure of the guide column and the pressing head in the bogie connecting rod rubber node pressing tool according to an embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of the assembly structure of the fixed base, the rotating base, the rod body positioning seat and the clamping handle of the bogie connecting rod rubber node press-fitting tool of the embodiment of the present application during actual press-fitting;

[0035] Figure 5 A top view of the bogie connecting rod rubber node press-fitting tool according to an embodiment of the present application during actual press-fitting;

[0036] Figure 6 This is a schematic diagram of the assembly structure of the guide column and the pressing head during the actual pressing of the bogie connecting rod rubber node pressing tool according to the embodiment of the present application;

[0037] In the figure:

[0038] A. Rubber node; B. Rod body; 1. Fixed base; 2. Rotating base; 20. Cylindrical pin; 3. Rod body positioning seat; 30. Positioning opening; 31. Reset spring; 32. Positioning pin; 320. Positioning pin circular hole; 33. Reset spring cover; 34. Countersunk screw; 4. Guide column; 5. Pressing head; 50. Long strip through groove; 51. Countersunk hole; 52. Pressing head through hole; 6. Clamping handle; 60. Handle upright; 61. Handle clamping rod. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0041] The embodiment of the present application provides a bogie connecting rod rubber node press-fitting tool, which meets the requirement that the flat surface and the center line of the rod body hole form a specific angle during the connecting rod rubber node press-fitting process through a specific fixing structure and a press-fitting structure, thereby effectively improving work efficiency and ensuring product quality.

[0042] In order to achieve the above technical effects, the overall idea of ​​this application is as follows:

[0043] A bogie connecting rod rubber node press-fitting tool, the press-fitting tool comprising:

[0044] Fixed base 1;

[0045] A rotating base 2 rotatably arranged on the fixed base 1 via a cylindrical pin 20;

[0046] A pair of rod body positioning seats 3 are provided, wherein a positioning opening 30 is provided at the top of the rod body positioning seat 3, a reset spring 31 is provided inside the positioning opening 30, a positioning pin 32 is provided on the top surface of the reset spring 31, and a positioning pin circular hole 320 is provided at the center of the positioning pin 32 for the protruding part of the rubber node core shaft to pass through, and the positioning pin 32 can move up and down in the positioning opening 30 under the support of the reset spring 31;

[0047] Four guide posts 4 are symmetrically arranged in pairs around the two rod positioning seats 3;

[0048] Two pressure heads 5, one pressure head 5 corresponds to two guide posts 4, the side wall of the pressure head 5 is detachably connected to the corresponding guide posts 4 in an up-and-down sliding manner, the pressure head 5 is provided with a long strip through slot 50 with a preset deflection angle, and the bottom surface is provided with a countersunk hole 51 for clamping with a rubber node; wherein,

[0049] When the pressing head 5 is disposed on the corresponding guide column 4 , the center of the counterbore 51 of the pressing head 5 coincides with the centers of the positioning opening 30 , the return spring 31 , the positioning pin 32 and the positioning pin circular hole 320 .

[0050] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0051] See also Figures 1 to 6 As shown, an embodiment of the present application provides a bogie connecting rod rubber node press-fitting tool, the press-fitting tool comprising:

[0052] Fixed base 1;

[0053] A rotating base 2 rotatably arranged on the fixed base 1 via a cylindrical pin 20;

[0054] A pair of rod body positioning seats 3 are provided, wherein a positioning opening 30 is provided at the top of the rod body positioning seat 3, a reset spring 31 is provided inside the positioning opening 30, a positioning pin 32 is provided on the top surface of the reset spring 31, and a positioning pin circular hole 320 is provided at the center of the positioning pin 32 for the protruding part of the rubber node core shaft to pass through, and the positioning pin 32 can move up and down in the positioning opening 30 under the support of the reset spring 31;

[0055] Four guide posts 4 are symmetrically arranged in pairs around the two rod positioning seats 3;

[0056] Two pressure heads 5, one pressure head 5 corresponds to two guide posts 4, the side wall of the pressure head 5 is detachably connected to the corresponding guide posts 4 in an up-and-down sliding manner, the pressure head 5 is provided with a long strip through slot 50 with a preset deflection angle, and the bottom surface is provided with a countersunk hole 51 for clamping with a rubber node; wherein,

[0057] When the pressing head 5 is disposed on the corresponding guide column 4 , the center of the counterbore 51 of the pressing head 5 coincides with the centers of the positioning opening 30 , the return spring 31 , the positioning pin 32 and the positioning pin circular hole 320 .

[0058] It should be noted that, as shown in the accompanying drawings of the specification Figure 1 As shown in the figure, it is a structural schematic diagram of a certain type of EMU bogie connecting rod, which is composed of a rubber node A and a rod body B. The rubber node A is pressed into the circular holes at both ends of the rod body B through interference fit. The rubber node A is rubber vulcanized on a metal mandrel, and the two ends of the mandrel are processed into a flat shape, and the flat surface forms an angle of 3° with the center line of the rod body hole. In the axial direction, the protruding parts at both ends of the rubber node A are symmetrically distributed with the rod body B as the center.

[0059] When press-fitting the rubber node A, the positioning method of the rod body B is difficult to determine, and the spatial dimension is difficult to locate. The 3° angle is the angle between the center of the protruding planes at both ends of the core shaft of the rubber node A and the center line of the hole of the rod body B. These two measured elements are on different planes. This dimension is a spatial position dimension and is difficult to locate.

[0060] The specific angle in this application is assumed to be 3°.

[0061] The embodiment of the present application meets the requirement that the flat surface and the center line of the rod body hole form a specific angle during the press-fitting process of the connecting rod rubber node through a specific fixing structure and a press-fitting structure, thereby effectively improving work efficiency and ensuring product quality.

[0062] Furthermore, the pressing tool also includes:

[0063] A clamping handle 6 provided on the rotating base 2;

[0064] The pressing handle 6 comprises:

[0065] A handle stand 60 erected on the rotating base 2;

[0066] A handle clamping rod 61 is hinged on the handle upright rod 60 , and the free end of the handle clamping rod 61 is used to clamp the bogie connecting rod to be press-fitted.

[0067] Furthermore, the size of the positioning opening 30 is configured so that the side wall thereof cooperates with the clamping handle 6 to limit the up and down movement of the bogie connecting rod to be press-fitted.

[0068] Furthermore, a return spring cover 33 is provided at the bottom of the positioning opening 30;

[0069] The bottom end of the return spring 31 is connected to the top surface of the return spring cover 33 .

[0070] On the basis of the above technical solution, the return spring cover 33 is arranged on the rod body positioning seat 3 through a plurality of countersunk screws 34 .

[0071] Furthermore, the pressure head 5 is a diamond-shaped structure, and a set of diagonal ends are provided with pressure head through holes 52;

[0072] The pressing head 5 is slidably mounted on the corresponding guide column 4 through the pressing head through hole 52 .

[0073] Furthermore, the preset deflection angle is 3°.

[0074] Furthermore, the cylindrical pin 20 is located at the center of the rotating base 2 and the fixed base 1 .

[0075] Furthermore, the pressing handle 6 is located on one side of the rotating base 2 .

[0076] Based on the technical solution of the embodiment of this application, its technical principle is explained:

[0077] The fixed base 1 is placed on a preset press workbench. A rotating base 2 and a rod body positioning seat 3 are arranged on the fixed base 1. The rotating base 2 and the rod body positioning seat 3 are welded together. The center distance of the rod body positioning seat 3 is consistent with the center distance of the bogie connecting rod hole. A positioning pin 32 and a return spring 31 are installed in the positioning opening 30 of the rod body positioning seat 3. The return spring cover 33 is fixed to the bottom of the rod body positioning seat 3 with four countersunk screws 34 to provide a clamping force to the return spring 31.

[0078] The locating pin 32 is a hollow structure, and the circular hole in the middle allows the protruding part of the core shaft of the rubber node to pass smoothly. The outer diameter size is divided into three sections: the upper section cooperates with the node hole of the rod body of the bogie connecting rod, and under the action of the return spring 31, it protrudes 10mm from the plane of the rod body locating seat to position the rod body; the middle section cooperates with the rod body locating seat to determine the center distance between the two locating pins 32; the lower section is used to limit the positioning to prevent the locating pin 32 from escaping from the rod body locating seat hole.

[0079] The guide column 4 is press-fitted onto the rotating base 2 by interference fit, and the mounting holes of the four guide columns 4 are matched with the rod body positioning seat holes, thereby ensuring the position accuracy of the guide columns 4 and the rod body positioning seat holes.

[0080] The pressing head 5 is fitted on the guide column 4 with a clearance fit. A 3° long groove and a 3.8±0.1 mm countersunk hole are provided on the pressing head 5. The angle between the long groove and the center line connecting the two guide columns 4 is 3°.

[0081] The matching part between the guide column 4 and the pressure head 5 is a chamfered diamond structure, which corrects the over-positioning of the pressure head and ensures that the pressure head 5 can slide freely without affecting the relative angle between the long groove of the pressure head 5 and the center line of the guide column 4.

[0082] The clamping handle 6 is fixed on the rotating base 2 to fix the rod body. The rotating base 2 is placed on the fixed base 1. A circular hole is processed in the middle of the rotating base 2. The hole is sleeved on the cylindrical pin 20 in the middle of the fixed base 1. Under human power, the rotating base 2 can rotate on the fixed base 1 to facilitate the press-fitting of the other side of the rod body.

[0083] Based on the structural basis of the embodiment of the present application, the specific operation process of the device is as follows:

[0084] The first step is to place the tool on a preset press workbench, adjust the tool position so that the press head is coaxial with the rod body locating seat 3 at one end of the tool, place the rod body of the bogie connecting rod flat on the rod body locating seat 3, and insert the protruding part of the locating pin 32 into the rod body node hole. The locating pins 32 at both ends and the rod body locating seat 3 form a one-side two-pin pair to position the rod body of the bogie connecting rod.

[0085] The second step is to press down the clamping handle 6 to fix the rod body of the bogie connecting rod. The rubber node of the bogie connecting rod is placed on the node hole of the rod body, and the angle of the flat end of the mandrel of the rubber node is adjusted so that it passes through the long groove of the pressing head 5 and falls into the countersunk hole 51 of the pressing head 5.

[0086] The third step is to start the press machine and press the rubber node into the rod body hole. As the rubber node is pressed in, the positioning pin 32 is pushed out of the node hole. When the pressure head 5 is completely in contact with the rod body, the pressure is maintained for a moment, the press oil pressure is unloaded, and the press assembly is completed.

[0087] The fourth step is to rotate the rotating base 180 degrees to make the other end of the rod body positioning seat 3 coaxial with the press head, and repeat the above operation to complete the press installation of the second rubber node.

[0088] Step 5: lift the clamping handle 6, remove the workpiece, and under the action of the reset spring 31, the positioning pins 32 at both ends of the tooling are reset.

[0089] In summary, based on the technical solutions of the embodiments of the present application,

[0090] Through accurate design and strict machining control, the tool can meet the needs of actual operations, convert the dimensional elements of the workpiece into the dimensional elements of the tooling, solve the problem of difficult positioning of the 3° angle space dimension, and improve the product qualification rate.

[0091] The structure composed of the positioning pin 32 with a hole and the return spring 31 realizes positioning by using the workpiece hole, unifies the process reference and the design reference, and improves the press-fitting accuracy. The 3.8±0.1mm countersunk hole 51 plays a role in limiting the axial size of the rubber node, ensuring that the protruding size on both sides of the rubber node is consistent, thus ensuring product quality.

[0092] The rotating base 2 can rotate to facilitate press-fitting the other side of the rod body, thereby improving work efficiency.

[0093] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0094] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0095] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A bogie connecting rod rubber node press-fitting tool, characterized in that: The pressing tool comprises: A fixed base (1); A rotating base (2) rotatably arranged on the fixed base (1) via a cylindrical pin (20); A pair of rod body positioning seats (3) are arranged on the top of the rod body positioning seat (3), a positioning opening (30) is arranged on the inside of the positioning opening (30), a reset spring (31) is arranged on the top surface of the reset spring (31), a positioning pin (32) is arranged on the top surface of the reset spring (31), a positioning pin circular hole (320) is arranged at the center of the positioning pin (32) for the protruding part of the rubber node core shaft to pass through, and the positioning pin (32) can move up and down in the positioning opening (30) under the support of the reset spring (31); Four guide columns (4) are symmetrically arranged in pairs around the two rod body positioning seats (3); Two pressure heads (5), one pressure head (5) corresponds to the two guide posts (4), the side wall of the pressure head (5) is detachably connected to the corresponding guide posts (4) in an up-and-down sliding manner, the pressure head (5) is provided with a long strip through groove (50) with a preset deflection angle, and the bottom surface is provided with a countersunk hole (51) for clamping with a rubber node; wherein, When the pressure head (5) is arranged on the corresponding guide column (4), the center of the countersunk hole (51) of the pressure head (5) coincides with the center of the positioning opening (30), the return spring (31), the positioning pin (32) and the positioning pin circular hole (320).

2. The bogie connecting rod rubber node press-fitting tool according to claim 1, characterized in that: The pressing tool also includes: A pressing handle (6) arranged on the rotating base (2); The pressing handle (6) comprises: A handle stand (60) vertically mounted on the rotating base (2); A handle clamping rod (61) is hinged on the handle upright rod (60), and the free end of the handle clamping rod (61) is used to clamp the bogie connecting rod to be pressed.

3. The bogie connecting rod rubber node press-fitting tool according to claim 2, characterized in that: The size of the positioning opening (30) is configured so that its side wall cooperates with the clamping handle (6) to limit the up and down movement of the bogie connecting rod to be pressed.

4. The bogie connecting rod rubber node press-fitting tool according to claim 1, characterized in that: A return spring cover (33) is provided at the bottom of the positioning opening (30); The bottom end of the return spring (31) is connected to the top surface of the return spring cover (33).

5. The bogie connecting rod rubber node press-fitting tool according to claim 4, characterized in that: The return spring cover (33) is arranged on the rod body positioning seat (3) via a plurality of countersunk screws (34).

6. The bogie connecting rod rubber node press-fitting tool according to claim 1, characterized in that: The pressure head (5) is a diamond-shaped structure, and a set of diagonal ends are provided with pressure head through holes (52); The pressure head (5) is slidably mounted on the corresponding guide column (4) through the pressure head through hole (52).

7. The bogie connecting rod rubber node press-fitting tool according to claim 1, characterized in that: The preset deflection angle is 3°.

8. The bogie connecting rod rubber node press-fitting tool according to claim 1, characterized in that: The cylindrical pin (20) is located at the center of the rotating base (2) and the fixed base (1).

9. The bogie connecting rod rubber node press-fitting tool according to claim 2, characterized in that: The pressing handle (6) is located on one side of the rotating base (2).

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