A binding connecting rod and a binding connecting rod assembly tool

Abstract

The present invention discloses a binding link and a binding link assembly tool, which belongs to the technical field of launch vehicle assembly, wherein the binding link comprises a first binding link pull ear, a first binding link separation cylinder, an adjustment cylinder, a second binding link separation cylinder and a second binding link pull ear which are sequentially arranged on a straight line, and each component can be detachably fixedly connected. The binding link assembly tool comprises a tool base with a dovetail slideway, a pull ear fixing seat and a separation cylinder fixing seat; the pull ear fixing seat comprises a first pull ear fixing seat and a second pull ear fixing seat, which are used to fix the first binding link pull ear and the second binding link pull ear; the separation cylinder fixing seat comprises a first separation cylinder fixing seat and a second separation cylinder fixing seat, which are used to fix the first binding link separation cylinder and the second binding link separation cylinder respectively; the present invention can effectively improve the assembly accuracy and assembly efficiency of the binding link.

Description

Technical Field

[0001] The invention relates to the technical field of launch vehicle assembly, and in particular to a binding connecting rod and a binding connecting rod assembly tool. Background Art

[0002] The tie-down rod is the main and auxiliary force transmission mechanism connecting the booster and the core stage rocket, and also has the function of separation and unlocking. The length of the tie-down rod can be adjusted to adapt to the relative position of the booster and the core stage rocket. Since the tie-down rod is heavy, has a complex structure, and has many assembly technical indicators, it requires special assembly tools for auxiliary assembly.

[0003] Currently, a bench vise is generally used to assemble the binding connecting rod, which has poor assembly accuracy, poor adjustment length measurement accuracy, and inconvenient operation.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a binding link and a binding link assembly tool, which can effectively improve the assembly accuracy and assembly efficiency of the binding link.

[0006] A binding link comprises a first binding link pull ear, a first binding link separation cylinder, an adjustment cylinder, and a second binding link separation cylinder and a second binding link pull ear arranged in a straight line; one end of the adjustment cylinder is detachably fixedly connected to the first binding link separation cylinder, and the other end of the adjustment cylinder is detachably fixedly connected to the second binding link separation cylinder; the first binding link pull ear is fixedly arranged at the distal end of the connection between the first binding link separation cylinder and the adjustment cylinder; the second binding link pull ear is fixedly arranged at the distal end of the connection between the second binding link separation cylinder and the adjustment cylinder; positioning pieces are arranged on the outer side walls of the first binding link separation cylinder and the second binding link separation cylinder.

[0007] Preferably, a first ball shaft is provided on the first binding link pull ear; a first connecting hole for connecting with the booster main binding mechanism is provided on the first ball shaft; a second ball shaft is provided on the second binding link pull ear; a second connecting hole for connecting with the core stage main binding mechanism is provided on the second ball shaft.

[0008] Preferably, the positioning member includes one or more positioning blocks; the positioning blocks are rectangular or cubic structures;

[0009] When the positioning member includes multiple positioning blocks, the multiple positioning blocks are located on the same straight line and are arranged at intervals; the multiple positioning blocks arranged on the first binding link separation cylinder constitute a first positioning block group; the multiple positioning blocks arranged on the second binding link separation cylinder constitute a second positioning block group.

[0010] Preferably, a first pull ear installation cavity is provided at one end of the first binding link separation cylinder; the first binding link pull ear assembly end is inserted into the first pull ear installation cavity and is fixedly connected to the first binding link separation cylinder through a first locking nut;

[0011] A second pull ear installation cavity is provided at one end of the second binding link separation cylinder; the second binding link pull ear assembly end is inserted into the second pull ear installation cavity and is fixedly connected to the second binding link separation cylinder through a fourth locking nut;

[0012] A first separation cylinder installation cavity is provided at one end of the adjustment cylinder, and the distal end of the first binding link separation cylinder connected with the first binding link pull ear is inserted into the first separation cylinder installation cavity and fixedly connected by a second locking nut;

[0013] A second separation cylinder installation cavity is provided at the other end of the adjustment cylinder, and the distal end of the second binding link separation cylinder connected with the second binding link pull ear is inserted into the second separation cylinder installation cavity and fixedly connected by a third locking nut.

[0014] Preferably, the second locking nut and the third locking nut have opposite thread directions.

[0015] According to another aspect of the present application, a binding connecting rod assembly tool is also provided, which is used to assemble the binding connecting rod, and includes: a tool base with a dovetail slideway, a pull ear fixing seat and a separation cylinder fixing seat;

[0016] The pull ear fixing seat comprises a first pull ear fixing seat for fixing the first binding link pull ear and a second pull ear fixing seat for fixing the second binding link pull ear;

[0017] The separation cylinder fixing seat comprises a first separation cylinder fixing seat for fixing the first binding connecting rod separation cylinder and a second separation cylinder fixing seat for fixing the second binding connecting rod separation cylinder;

[0018] The first pull ear fixing seat, the first separation cylinder fixing seat, the second separation cylinder fixing seat and the second pull ear fixing seat are slidably arranged in the dovetail slideway in sequence.

[0019] Preferably, the separation cylinder fixing seat includes a horizontally arranged separation cylinder fixing cavity; the separation cylinder fixing seat includes a clamping seat and a clamping block; the clamping seat is slidably arranged in the dovetail slide; the clamping block is detachably fixedly connected above the clamping seat; the clamping seat and the clamping block enclose the separation cylinder fixing cavity.

[0020] Preferably, a positioning cavity for carrying a positioning member is provided on the separation cylinder fixing seat.

[0021] Preferably, the pull ear fixing seat comprises a fixing seat body, a fixing shaft and a locking nut; the fixing shaft is fixedly connected to the upper surface of the fixing seat body; and the locking nut is threadedly connected to the fixing shaft.

[0022] Preferably, it further comprises a limit block for limiting the distance between the first pull ear fixing seat and the second pull ear fixing seat; a limit hole is arranged in the dovetail slide; the limit block can be fixed in the limit hole; the limit block comprises a first limit block and a second limit block.

[0023] Compared with the prior art, this application has at least the following beneficial effects:

[0024] 1. The present invention can effectively improve the assembly accuracy and assembly efficiency of the binding connecting rod.

[0025] 2. The binding connecting rod of the present invention is provided with a positioning piece, and cooperates with the positioning cavity of the separation cylinder fixing seat in the binding connecting rod assembly tooling, so as to achieve positioning, ensure the installation position of the separation cylinder, and further improve the assembly accuracy.

[0026] 3. The binding link assembly tool of the present invention includes a positioning piece, which is used to limit the overall length of the binding link, thereby further improving the assembly accuracy of the binding link. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the binding connecting rod of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the binding connecting rod assembly tool of the present invention;

[0030] Figure 3 The present invention is a schematic cross-sectional structure diagram of assembling a binding connecting rod by using a binding connecting rod assembly tool.

[0031] The above drawings include the following reference numerals:

[0032] 11. First binding link pull ear; 12. First binding link separation cylinder; 13. First positioning block group; 14. Adjustment cylinder; 15. Second binding link separation cylinder; 16. Second positioning block group; 17. Second binding link pull ear; 18. Second ball shaft; 19. First ball shaft; 20. First locking nut; 21. Second locking nut; 22. Third first locking nut; 23. Fourth locking nut; 31. Tooling base; 32. First limit block; 33. First pull ear Fixed seat; 34, first separation cylinder fixed seat; 35, dovetail slide; 36, second separation cylinder fixed seat; 37, second pull ear fixed seat; 38, second limit block; 331, first fixed seat body; 332, first fixed shaft; 333, first locking nut; 341, first clamping seat; 342, first clamping block; 361, second clamping seat; 362, second clamping block; 371, second fixed seat body; 372, second fixed shaft; 373, second locking nut. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only 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 the present application.

[0034] like Figure 1 As shown, a binding link comprises a first binding link pull ear 11, a first binding link separation cylinder 12, an adjusting cylinder 14, a second binding link separation cylinder 15 and a second binding link pull ear 17 arranged in a straight line; one end of the adjusting cylinder 14 is detachably fixedly connected to the first binding link separation cylinder 12, and the other end of the adjusting cylinder 14 is detachably fixedly connected to the second binding link separation cylinder 15; the first binding link pull ear 11 is fixedly arranged at the distal end of the connection between the first binding link separation cylinder 12 and the adjusting cylinder 14; the second binding link pull ear 12 is fixedly arranged at the distal end of the connection between the second binding link separation cylinder 15 and the adjusting cylinder 14; positioning pieces are arranged on the outer side walls of the first binding link separation cylinder 12 and the second binding link separation cylinder 15.

[0035] A first ball shaft 19 is provided on the first binding link pull ear 11; a first connecting hole for connecting with the booster main binding mechanism is provided on the first ball shaft 19; a second ball shaft 18 is provided on the second binding link pull ear 17; a second connecting hole for connecting with the core stage main binding mechanism is provided on the second ball shaft 18.

[0036] The positioning member includes one or more positioning blocks.

[0037] Preferably, the positioning block is a rectangular parallelepiped or cube structure;

[0038] When the positioning member includes multiple positioning blocks, the multiple positioning blocks are located on the same straight line and are arranged at intervals; the multiple positioning blocks arranged in the first binding link separation cylinder 12 constitute the first positioning block group 13; the multiple positioning blocks arranged in the second binding link separation cylinder 15 constitute the second positioning block group 16.

[0039] Specifically, a first pull ear installation cavity is provided at one end of the first binding link separation cylinder 12; the assembly end of the first binding link pull ear 11 is inserted into the first pull ear installation cavity and is fixedly connected to the first binding link separation cylinder 12 through a first locking nut 20.

[0040] A second pull ear installation cavity is provided at one end of the second binding link separation cylinder 15 ; the assembly end of the second binding link pull ear 17 is inserted into the second pull ear installation cavity and is fixedly connected to the second binding link separation cylinder 15 through a fourth locking nut 23 .

[0041] A first separation cylinder installation cavity is provided at one end of the adjustment cylinder 14 , and the distal end of the first binding link separation cylinder 12 connected with the first binding link pull ear 11 is inserted into the first separation cylinder installation cavity and fixedly connected by a second locking nut 21 .

[0042] A second separation cylinder installation cavity is provided at the other end of the adjustment cylinder 14 , and the distal end of the second binding link separation cylinder 15 connected with the second binding link pull ear 17 is inserted into the second separation cylinder installation cavity and fixedly connected by a third locking nut 22 .

[0043] Preferably, the second locking nut 21 and the third locking nut 22 have opposite thread directions. During assembly, by rotating the adjustment cylinder 14, the length of the binding connecting rod can be adjusted.

[0044] like Figure 2 and Figure 3 As shown, a binding connecting rod assembly tool is used to assemble the above-mentioned binding connecting rod, including: a tool base 31 with a dovetail slide 35, a pull ear fixing seat and a separation cylinder fixing seat.

[0045] The pull ear fixing seat includes a first pull ear fixing seat 33 for fixing the first binding link pull ear 11 and a second pull ear fixing seat 37 for fixing the second binding link pull ear 17 .

[0046] The separation cylinder fixing seat includes a first separation cylinder fixing seat 34 for fixing the first binding link separation cylinder 12 and a second separation cylinder fixing seat 36 for fixing the second binding link separation cylinder 15 .

[0047] The first pull ear fixing seat 33 , the first separation cylinder fixing seat 34 , the second separation cylinder fixing seat 36 and the second pull ear fixing seat 37 are sequentially slidably disposed in the dovetail slideway 35 .

[0048] The separation cylinder fixing seat includes a horizontally arranged separation cylinder fixing cavity, and the separation cylinder fixing seat includes a pressing seat and a pressing block; the pressing seat is slidably arranged in the dovetail slide 35; the pressing block is detachably fixedly connected above the pressing seat; the pressing seat and the pressing block enclose the separation cylinder fixing cavity.

[0049] The pull ear fixing seat comprises a fixing seat body, a fixing shaft and a locking nut; the fixing shaft is fixedly connected to the upper surface of the fixing seat body; and the locking nut is threadedly connected to the fixing shaft.

[0050] In this embodiment, the first pull ear fixing seat 33 includes a first fixing seat body 331, a first fixing shaft 332 and a first locking nut 333. The first fixing seat body 331 is slidably disposed in the dovetail slide 35, the first fixing shaft 332 is fixed to the upper surface of the first fixing seat body 331, and the first locking nut 333 is threadedly connected to the first fixing shaft 332. It should be noted that after the first locking nut 333 is threadedly connected to the first fixing shaft 332, the minimum distance between the lower surface of the first locking nut 333 and the highest point of the first fixing seat body 331 needs to be greater than the maximum thickness of the first ball shaft 19, so as to ensure the fixing effect of the first pull ear fixing seat 33 on the first ball shaft 19 and the first binding connecting rod pull ear 11.

[0051] The structure of the second pull ear fixing seat 37 is the same as that of the first pull ear fixing seat 33, including a second fixing seat body 371, a second fixing shaft 372 and a second locking nut 373. The second fixing seat body 371 is slidably arranged in the dovetail slide 35, the second fixing shaft 372 is fixed to the upper surface of the second fixing seat body 371, and the second locking nut 373 is threadedly connected to the second fixing shaft 372. It should be noted that after the second locking nut 373 is threadedly connected to the second fixing shaft 372, the minimum distance between the lower surface of the second locking nut 373 and the highest point of the second fixing seat body 371 needs to be greater than the maximum thickness of the second ball shaft 18, so as to ensure the fixing effect of the second pull ear fixing seat 37 on the second ball shaft 18 and the second binding connecting rod pull ear 17.

[0052] The first separation cylinder fixing seat 34 includes a first pressing seat 341 and a first pressing block 342. The first pressing block 342 is arranged on the upper part of the first pressing seat 341 and is fixedly connected to the first pressing seat 341 by bolts. A positioning cavity is arranged on the side of the first pressing seat 341, and the positioning cavity is communicated with the upper surface of the first pressing seat 341 to ensure that the positioning block can be placed in the positioning cavity.

[0053] As another embodiment of the present invention, the positioning cavity may also be provided in the first pressing block 342 , and the positioning cavity is communicated with the lower surface of the first pressing block 342 .

[0054] As another embodiment of the present invention, the positioning cavity is partially disposed on the first pressing seat 341 and communicated with the upper surface of the first pressing seat 341 ; meanwhile, the positioning cavity is partially disposed on the first pressing block 342 and communicated with the lower surface of the first pressing block 342 .

[0055] The second separation cylinder fixing seat 36 comprises a second pressing seat 361 and a second pressing block 362. The second pressing block 362 is disposed on the upper portion of the second pressing seat 361 and is fixedly connected to the second pressing seat 361 by bolts.

[0056] In addition, a positioning cavity is also provided on the second separation cylinder fixing seat 36 , and the arrangement form is the same as that of the first separation cylinder fixing seat 34 , which will not be described in detail here.

[0057] It should be noted that the centers of the separation cylinder fixing chambers of the first separation cylinder fixing seat 34 and the second separation cylinder fixing seat 36 are located on the same straight line, and at the same time, the height between the upper surface of the first fixing seat body 331 and the center of the first ball shaft 19 is collinear with the center of the separation cylinder fixing chamber of the first separation cylinder fixing seat 34. The height between the upper surface of the second fixing seat body 371 and the center of the second ball shaft 18 is collinear with the center of the separation cylinder fixing chamber of the second separation cylinder fixing seat 36. With this arrangement, it can be ensured that when the binding connecting rod is assembled, its various components can be collinear, ensuring the straightness of its assembly.

[0058] In some other embodiments of the present invention, a limit block is further included for limiting the distance between the first pull ear fixing seat 33 and the second pull ear fixing seat 37; a limit hole is set in the dovetail slide 35; the limit block can be fixed in the limit hole, including a first limit block 32 and a second limit block 38.

[0059] In other embodiments of the present invention, a plurality of limit holes may be provided along the dovetail slide 35. When assembling binding rods of different specifications and models, the first limit block 32 and the second limit block 38 may be respectively provided in different limit holes to improve the applicability of the binding rod assembly tooling.

[0060] Preferably, the first limiting block 32 and the second limiting block 38 are inserted into the corresponding limiting holes.

[0061] Before assembling the binding link, the first binding link pull ear 11, the first binding link separation cylinder 12, the adjustment cylinder 14, the second binding link separation cylinder 15 and the second binding link pull ear 17 are inserted without being fixed, and the first locking nut 20, the second locking nut 21, the third first locking nut 22 and the fourth locking nut 23 are placed in corresponding positions to be installed respectively.

[0062] When assembling the binding link, place the first binding link separation cylinder 12 on the upper surface of the first clamping seat 341, and fix the first clamping block 342 and the first clamping seat 341 with bolts, so that the first binding link separation cylinder 12 is placed in the separation cylinder fixing cavity of the first separation cylinder fixing seat 34, and the corresponding positioning block is placed in the positioning cavity of the first binding link separation cylinder 12.

[0063] Similarly, the second binding link separation cylinder 15 is placed into the separation cylinder fixing cavity of the second separation cylinder fixing seat 36 , and the corresponding positioning block is placed into the positioning cavity of the second binding link separation cylinder 15 .

[0064] Then, the first ball shaft 19 is inserted into the first fixed shaft 332 to fix the first binding link pull ear 11 with the first pull ear fixing seat 33. Similarly, the second ball shaft 18 is inserted into the second fixed shaft 372 to fix the second binding link pull ear 17 with the second pull ear fixing seat 37.

[0065] The first limiting block 32 and the second limiting block 38 are inserted into their respective corresponding limiting holes for easy disassembly, and their function is to ensure a fixed length of the binding connecting rod.

[0066] By relying on the fixing effect of the first separation cylinder fixing seat 34 and the second separation cylinder fixing seat 36, it is possible to ensure that the first binding link separation cylinder 12, the second binding link separation cylinder 15, the first binding link pull ear 11 and the second binding link pull ear 17 are in the same straight line, thereby ensuring the straightness of the binding link. In addition, the first clamping block 342 and the second clamping block 362 can prevent the binding link from falling out of the binding link assembly tooling when the first locking nut 20, the second locking nut 21, the third first locking nut 22 and the fourth locking nut 23 are applied with torque.

[0067] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A binding connecting rod, characterized in that: It comprises a first binding link pull ear (11), a first binding link separation cylinder (12), an adjustment cylinder (14), a second binding link separation cylinder (15) and a second binding link pull ear (17) arranged on a straight line; one end of the adjustment cylinder (14) is detachably fixedly connected to the first binding link separation cylinder (12), and the other end of the adjustment cylinder (14) is detachably fixedly connected to the second binding link separation cylinder (15); the first binding link pull ear (11) is fixedly arranged at the distal end of the connection between the first binding link separation cylinder (12) and the adjustment cylinder (14); the second binding link pull ear (17) is fixedly arranged at the distal end of the connection between the second binding link separation cylinder (15) and the adjustment cylinder (14); positioning pieces are arranged on the outer side walls of the first binding link separation cylinder (12) and the second binding link separation cylinder (15); The positioning member includes one or more positioning blocks; the positioning blocks are rectangular or cube structures; When the positioning member includes multiple positioning blocks, the multiple positioning blocks are located on the same straight line and are arranged at intervals; the multiple positioning blocks arranged on the first binding link separation cylinder (12) constitute a first positioning block group (13); and the multiple positioning blocks arranged on the second binding link separation cylinder (15) constitute a second positioning block group (16).

2. The binding connecting rod according to claim 1, characterized in that: The first binding link pull ear (11) is provided with a first ball shaft (19); the first ball shaft (19) is provided with a first connection hole for connecting with the booster main binding mechanism; the second binding link pull ear (17) is provided with a second ball shaft (18); the second ball shaft (18) is provided with a second connection hole for connecting with the core stage main binding mechanism.

3. The binding connecting rod according to claim 1, characterized in that: A first pull ear installation cavity is provided at one end of the first binding link separation cylinder (12); the assembly end of the first binding link pull ear (11) is inserted into the first pull ear installation cavity and is fixedly connected to the first binding link separation cylinder (12) via a first locking nut (20); A second pull ear installation cavity is provided at one end of the second binding link separation cylinder (15); the assembly end of the second binding link pull ear (17) is inserted into the second pull ear installation cavity and is fixedly connected to the second binding link separation cylinder (15) via a fourth locking nut (23); A first separation cylinder installation cavity is provided at one end of the adjustment cylinder (14), and the distal end of the first binding link separation cylinder (12) connected to the first binding link pull ear (11) is inserted into the first separation cylinder installation cavity and fixedly connected by a second locking nut (21); The other end of the adjustment cylinder (14) is provided with a second separation cylinder installation cavity, and the distal end of the second binding link separation cylinder (15) connected to the second binding link pull ear (17) is inserted into the second separation cylinder installation cavity and fixedly connected by a third locking nut (22).

4. The binding connecting rod according to claim 3, characterized in that: The second locking nut (21) and the third locking nut (22) have opposite thread directions.

5. A tool for assembling a connecting rod, characterized in that: Used for assembling the binding connecting rod according to any one of claims 1 to 4, comprising: a tooling base (31) having a dovetail slideway (35) and a pull ear fixing seat and a separation cylinder fixing seat; The pull ear fixing seat comprises a first pull ear fixing seat (33) for fixing the first binding link pull ear (11) and a second pull ear fixing seat (37) for fixing the second binding link pull ear (17); The separation cylinder fixing seat comprises a first separation cylinder fixing seat (34) for fixing the first binding connecting rod separation cylinder (12) and a second separation cylinder fixing seat (36) for fixing the second binding connecting rod separation cylinder (15); The first pull ear fixing seat (33), the first separation cylinder fixing seat (34), the second separation cylinder fixing seat (36) and the second pull ear fixing seat (37) are slidably arranged in sequence in the dovetail slideway (35).

6. The tool for assembling connecting rods according to claim 5, characterized in that: The separation cylinder fixing seat comprises a horizontally arranged separation cylinder fixing cavity; the separation cylinder fixing seat comprises a pressing seat and a pressing block; the pressing seat is slidably arranged in the dovetail slideway (35); the pressing block is detachably fixedly connected above the pressing seat; the pressing seat and the pressing block together enclose the separation cylinder fixing cavity.

7. The tool for assembling connecting rods according to claim 6, characterized in that: The separation cylinder fixing seat is provided with a positioning cavity for carrying the positioning piece.

8. The tool for assembling connecting rods according to claim 5, characterized in that: The pull ear fixing seat comprises a fixing seat body, a fixing shaft and a locking nut; the fixing shaft is fixedly connected to the upper surface of the fixing seat body; and the locking nut is threadedly connected to the fixing shaft.

9. The tool for assembling connecting rods according to claim 5, characterized in that: It also includes a limit block for limiting the distance between the first pull ear fixing seat (33) and the second pull ear fixing seat (37); a limit hole is provided in the dovetail slideway (35); the limit block can be fixed in the limit hole; the limit block includes a first limit block (32) and a second limit block (38).

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