Automatic mechanical press-fitting device for heavy truck suspension thrust rod assembly

Abstract

The invention discloses an automatic mechanical press-fitting device for heavy truck suspension thrust rod assembly, and relates to the technical field of heavy truck suspension thrust rod assembly, and the automatic mechanical press-fitting device is technically characterized by comprising an upper template and a lower template, the lower template is arranged below the upper template, a press-fitting mechanism is arranged between the upper template and the lower template, and the press-fitting mechanism comprises a guide column, a return spring and a reverse pull arm; the press-fitting mechanism has the technical effects that the press-fitting mechanism is arranged, in the press-fitting process of the thrust rod through the snap spring (check ring), the whole process of pre-assembling, press-fitting and bouncing off of the snap spring is automatically achieved, the human assistance effect is reduced, and by means of the acting force generated by the lever effect in the equipment advancing process, the thrust rod can be automatically pressed, so that the thrust rod can be automatically assembled and disassembled. The power source in the automatic process is changed, automatic clamp spring assembling is achieved, manual clamp spring pincers are eliminated, the clamp spring falls into a clamp channel through the dead weight, the clamp spring can be accurately pressed, stress in the process is balanced, and stable entering of clamp spring pressing is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of heavy truck suspension thrust rod assembly, in particular to an automatic mechanical press-fitting device for assembling a heavy truck suspension thrust rod. Background Art

[0002] In the manufacturing and maintenance process of heavy trucks, the thrust rod of heavy truck suspension plays a vital role. It connects various key parts of the vehicle to ensure the stability and safety of the vehicle during driving. Heavy trucks will experience various complex road conditions during driving, resulting in severe vibrations and bumps. After the retaining spring is pressed onto the outside of the thrust rod pin shaft, it can tightly clamp the pin shaft to prevent the pin shaft from axial movement during operation. This is crucial to maintaining a stable connection between the thrust rod and other connecting parts.

[0003] At present, when assembling the thrust rod of heavy truck suspension, the pressing work of the retaining springs on the outside of the pin shafts at the front and rear ends mainly relies on manual operation. In this process, workers need to place the retaining springs in specific positions one by one. This purely manpower-assisted operation method makes the degree of automation seriously insufficient. The process is extremely time-consuming and labor-intensive, and the manual operation efficiency is low and the manual operation speed is slow. Especially in large-scale production, a lot of time is wasted on the repetitive manual placement of retaining springs, which greatly slows down the entire production progress. In order to solve this problem, we have developed an automatic mechanical pressing device for assembling thrust rods of heavy truck suspension. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic mechanical press-fitting device for assembling a thrust rod of a heavy truck suspension. By setting a press-fitting mechanism, the entire process of pre-installing, pressing and ejecting the retaining spring can be automatically realized during the press-fitting of the retaining spring on the thrust rod, thereby reducing the role of human assistance.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic mechanical press-fitting device for assembling a thrust rod of a heavy truck suspension, comprising: an upper template and a lower template, a lower template is set below the upper template, a press-fitting mechanism is arranged between the upper template and the lower template, the press-fitting mechanism comprises a guide column, a return spring and a reverse pull arm, a guide column is respectively installed at the left front and right rear of the lower side of the upper template, a return spring is respectively installed on the outer side of the two guide columns, a reverse pull arm is arranged at the lower right side of the upper template, a reverse thrust rod is connected to the front of the reverse pull arm through a rotating pin, and the reverse A push tongue is connected to the lower part of the pulling arm through a lock hook, a support block is connected to the left side of the lock hook through a pull spring, a propulsion support is installed under the support block, a retaining spring is provided on the left side above the propulsion support, a retaining spring guide is installed on the left side of the retaining spring, a main pressure head is installed in the middle below the upper template, a main pressure flange is provided in the middle above the lower template, a support rod is installed in the front right side of the propulsion support, the support rod is connected to the reverse thrust rod through a guide pin above the support rod, a guide slide is connected to the left end of the reverse thrust rod, a lock tongue is installed on the front side below the propulsion support, and the push tongue is connected to the propulsion support;

[0008] A lubrication mechanism is provided below the lower template, and the lubrication mechanism includes a supporting bottom frame, a lubrication pipe and an oil receiving pan. A lubrication pipe is provided below the corresponding positions of the supporting bottom frame and the two guide pillars, and an oil receiving pan is provided above and outside the lubrication pipe;

[0009] A rebound suppression mechanism is provided above the upper template, and the rebound suppression mechanism includes a top box, an air valve and an outer sleeve. An air intake valve is connected below the top box, and an outer sleeve is connected below the air intake valve. An extrusion rod is provided below the outer sleeve, a piston is provided inside the outer sleeve, and an inner air bag is installed inside the top box.

[0010] Preferably, the upper and lower ends of the two return springs are respectively connected to the upper template and the lower template, and the lower ends of the two guide pillars pass through the lower template respectively.

[0011] The reverse thrust rod is pushed by the reverse pulling arm to drive the upper template to descend through the guide slide. The upper template drives the main pressure head to descend and at the same time, the retaining spring can be moved to the pre-installed position. The retaining spring enters the retaining track under its own weight, and then is pressed into the gravity suspension thrust rod through the main pressure head. The retaining spring can be accurately pressed and the force is balanced in the process. The retaining spring is pressed and installed smoothly. In the process of the upper template descending, the two guide columns are driven down and the two return springs are compressed at the same time.

[0012] Preferably, a threaded bottom head is connected to each of the two lubricating fluid pipes, and a mounting hole is opened respectively under each of the two threaded bottom heads.

[0013] Preferably, the lubricating liquid pipe is filled with lubricating oil, and the upper surface of the oil receiving pan is recessed downward to form an oil receiving groove.

[0014] Preferably, a central tube is installed in the middle of the oil receiving pan, and the lower template is connected to the supporting bottom frame.

[0015] Preferably, the inner wall of the central tube and the inner wall of the mounting hole are both provided with internal threads, and the outer wall of the upper end of the threaded bottom head and the outer wall of the upper end of the lubricating liquid pipe are both provided with external threads.

[0016] Preferably, the lower end of the threaded bottom head is rotatably connected to the mounting hole via a thread, and the oil receiving pan is rotatably connected to the lubricating liquid pipe via a center tube via a thread.

[0017] During the descent of the guide column, the guide column enters into two lubricating liquid tubes, so that the lubricating oil adheres to the outside of the guide column, and then can lubricate the guide column and the parts it penetrates, improving the smoothness of the guide column during the lifting process. When the guide column enters, under the pressure of the guide column, some of the lubricating oil will overflow outward, and the overflowed oil can enter the oil collecting tank for centralized collection, preventing it from overflowing to the outside and making it difficult to clean.

[0018] Preferably, the top box is connected to the supporting bottom frame via a connecting frame, and an upper air valve is installed above the top box.

[0019] Preferably, the upper air valve is connected to the inner air bag, the air inlet valve is connected to the inner air bag, and the upper end of the extrusion rod extends into the outer sleeve and is connected to the piston.

[0020] Preferably, the diameters of the two oil receiving pans are the same, and the diameter of the lubricating liquid pipe is greater than the diameter of the guide column.

[0021] When the return spring rebounds, its rebound force drives the upper template to rise, and the upper template pushes the piston to move upward in the outer sleeve through the extrusion rod. At this time, the movement of the piston allows the air pressure to enter the inner airbag. As the gas is continuously injected, the inner airbag gradually inflates and expands. The expansion of the inner airbag plays a role in buffering and suppressing the rebound of the return spring. The gradually expanding inner airbag increases the reverse force on the piston and the upper template, thereby slowing down the upward rebound speed and strength of the return spring.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides an automatic mechanical press-fitting device for assembling a thrust rod of a heavy truck suspension, which has the following beneficial effects:

[0024] 1. By setting up a press-fitting mechanism, the whole process of pre-installation, press-fitting and ejection of the circlip (retaining ring) for the thrust rod can be automatically realized during the press-fitting process of the circlip (retaining ring), reducing the role of human assistance, and using the force generated by the action of the lever during the movement of the equipment to become the power source in the automatic process, so as to realize automatic assembly of the circlip, eliminate the manual use of circlip pliers to assist, and use the deadweight of the circlip to fall into the card channel, so that the circlip can be accurately pressed, the force is balanced during the process, and the circlip press-fitting can be realized smoothly.

[0025] 2. By setting up a rebound suppression mechanism, the upward rebound speed of the return spring can be effectively slowed down, avoiding the impact and instability caused by too fast rebound speed, which helps to maintain the smoothness of operation, reduce vibration and noise during operation, and improve reliability and service life. In addition, the role of the rebound suppression mechanism is to improve the safety of the equipment. The slower rebound speed and force can reduce the dangers faced by operators during operation and reduce the probability of accidents.

[0026] 3. By setting up a lubrication mechanism, during the working process of the guide column, when the guide column descends, it can adhere to the lubricating oil to lubricate the outside of the guide column, which can greatly reduce the friction resistance of the guide column, making the guide column smoother during movement, and the inner wall of the penetration part can be lubricated by the guide column, which can effectively prevent the wear between the guide column and the inner wall, and extend the service life of the guide column and related parts. At the same time, the overall smoothness of the present invention is improved, and the energy loss and noise caused by friction are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall structure of the press-fitting mechanism in the present invention;

[0029] Figure 3 It is a structural schematic diagram of the rebound suppression mechanism in the present invention from the right side;

[0030] Figure 4 It is a structural schematic diagram of the lubrication mechanism in the present invention;

[0031] Figure 5 It is a schematic diagram of the front cross-sectional structure of the rebound suppression mechanism in the present invention;

[0032] Figure 6 It is a structural schematic diagram of the oil receiving pan in the present invention;

[0033] Figure 7 for Figure 4 A magnified schematic diagram of part B;

[0034] Figure 8 for Figure 1An enlarged schematic diagram of part A.

[0035] In the figure: 1. Upper template; 2. Lower template;

[0036] 3. Press-fitting mechanism; 31. Guide column; 33. Return spring; 34. Reverse pulling arm; 35. Rotating pin; 36. Reverse thrust rod; 37. Support rod; 38. Guide pin; 39. Lock hook; 310. Push tongue; 311. Pull spring; 312. Support block; 313. Lock tongue; 314. Circlip; 315. Circlip guide; 316. Push support; 317. Main pressure flange; 318. Guide slide; 319. Main pressure head;

[0037] 4. Rebound suppression mechanism; 41. Top box; 42. Upper air valve; 43. Connecting frame; 44. Inlet valve; 45. Outer sleeve; 46. Extrusion rod; 47. Piston; 48. Inner air bag;

[0038] 5. Lubrication mechanism; 51. Support bottom frame; 52. Lubricating liquid pipe; 53. Oil receiving pan; 54. Threaded bottom head; 55. Center tube; 56. Mounting hole; 57. Oil receiving groove. DETAILED DESCRIPTION

[0039] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0040] See also Figure 1-8 The present invention provides a technical solution for an automatic mechanical press-fit device for assembling a thrust rod of a heavy truck suspension:

[0041] Embodiment 1: An automatic mechanical press-fit device for assembling a thrust rod of a heavy truck suspension, comprising: an upper template 1 and a lower template 2, wherein the lower template 2 is set below the upper template 1, and a press-fit mechanism 3 is provided between the upper template 1 and the lower template 2, wherein the press-fit mechanism 3 comprises a guide column 31, a return spring 33 and a reverse pull arm 34, wherein a guide column 31 is respectively installed at the left front and right rear of the lower side of the upper template 1, and a return spring 33 is respectively installed outside the two guide columns 31, and a reverse pull arm 34 is provided at the lower right side of the upper template 1, and a reverse thrust rod 36 is connected to the front of the reverse pull arm 34 through a rotating pin 35, and a push tongue 310 is connected to the lower side of the reverse pull arm 34 through a locking hook 39, and the locking hook A support block 312 is connected to the left side of 39 through a pulling spring 311, a propulsion support 316 is installed below the support block 312, a retaining spring 314 is provided on the left side above the propulsion support 316, a retaining spring guide 315 is installed on the left side of the retaining spring 314, a main pressure head 319 is installed in the middle below the upper template 1, a main pressure flange 317 is provided in the middle above the lower template 2, a support rod 37 is installed in the front right side of the propulsion support 316, the support rod 37 is connected to the reverse thrust rod 36 through a guide pin 38 above, the left end of the reverse thrust rod 36 is connected to a guide slide 318, a locking tongue 313 is installed on the front side below the propulsion support 316, and the pushing tongue 310 is connected to the propulsion support 316.

[0042] The upper and lower ends of the two return springs 33 are connected to the upper mold plate 1 and the lower mold plate 2 respectively, and the lower ends of the two guide pillars 31 pass through the lower mold plate 2 respectively.

[0043] When in use, the reverse thrust rod 36 is pushed by the reverse pulling arm 34 to make it pass through the guide slideway 318 to drive the upper template 1 to descend. The upper template 1 drives the main pressing head 319 to descend, and at the same time, the retaining spring 314 can be moved to the pre-installed position, and the retaining spring 314 is entered into the card track by its own weight, and then the retaining spring 314 is pressed into the gravity suspension thrust rod through the main pressing head 319, so that the retaining spring 314 can be accurately press-fitted. The force is balanced in this process, and the retaining spring 314 is press-fitted smoothly. In the process of the upper template 1 descending, the two guide pillars 31 are driven to descend, and the two return springs 33 are compressed at the same time, and the reverse pulling arm 34 is pushed to stretch the pulling spring 311. After the press-fitting is completed, the return spring 314 is pressed into the upper template 1. The rebound of the spring 33 and the pulling spring 311 can make the various components pop open, and then during the press-fitting process of the thrust rod with the retaining ring 314 (retaining ring), the entire process of pre-installation, pressing and popping open of the retaining ring 314 is automatically realized, reducing the role of human assistance, thereby realizing automation in the pressing process, reducing human fatigue in the process, and realizing industrialized production. In addition, the force generated by the action of the lever during the movement of the equipment can be used as a power source in the automatic process, thereby realizing automatic assembly of the retaining ring 314 and eliminating manual assistance of retaining ring pliers. When the retaining ring 314 is difficult to enter during the pressing process, the retaining ring 314 can be dropped through the peripheral locking tongue 313 to ensure secondary re-pressing.

[0044] Embodiment 2: A lubrication mechanism 5 is provided below the lower template 2, and the lubrication mechanism 5 includes a supporting bottom frame 51, a lubrication pipe 52 and an oil receiving pan 53. A lubrication pipe 52 is provided below the corresponding positions of the supporting bottom frame 51 and the two guide pillars 31, and an oil receiving pan 53 is provided above and outside the lubrication pipe 52;

[0045] A threaded bottom head 54 is connected to the two lubricating liquid pipes 52 respectively, and a mounting hole 56 is formed under the two threaded bottom heads 54 respectively.

[0046] The lubricating liquid pipe 52 is filled with lubricating oil, and the upper surface of the oil receiving pan 53 is recessed downward to form an oil receiving groove 57 .

[0047] A central tube 55 is installed in the middle of the oil receiving pan 53 , and the lower template 2 is connected to the supporting bottom frame 51 .

[0048] The inner wall of the central tube 55 and the inner wall of the mounting hole 56 are both provided with internal threads, and the outer wall of the upper end of the threaded bottom head 54 and the outer wall of the upper end of the lubricating liquid tube 52 are both provided with external threads.

[0049] The lower end of the threaded bottom head 54 is rotatably connected to the mounting hole 56 through a thread, and the oil receiving pan 53 is rotatably connected to the lubricating liquid pipe 52 through a central pipe 55 through a thread.

[0050] The diameters of the two oil receiving pans 53 are the same, and the diameter of the lubricating liquid pipe 52 is greater than the diameter of the guide post 31 .

[0051] In specific use, it is further explained in combination with Example 1. During the descent of the guide column 31, the guide column 31 enters the two lubricating liquid tubes 52, so that the lubricating oil adheres to the outside of the guide column 31, and then the guide column 31 and the penetrating parts thereof can be lubricated, thereby improving the smoothness of the guide column 31 during the lifting and lowering process. When the guide column 31 enters, under the pressure of the guide column 31, part of the lubricating oil will overflow outward, and the overflowed oil can enter the oil receiving groove 57 for centralized collection to prevent it from overflowing to the outside and becoming difficult to clean. When the lubricating oil needs to be replenished, the threaded bottom head 54 can be rotated to disconnect it from the mounting hole 56, and the lubricating liquid tube 52 can be removed, thereby facilitating the replenishment of the lubricating oil inside it, or cleaning the inside thereof, and the oil receiving pan 53 can be rotated to disconnect the center tube 55 from the lubricating liquid tube 52, thereby completing the disassembly of the oil receiving pan 53, thereby facilitating the disassembly and cleaning of the docking oil pan 53.

[0052] Embodiment three: A rebound suppression mechanism 4 is provided above the upper template 1, and the rebound suppression mechanism 4 includes a top box 41, an air valve and an outer sleeve 45. An air intake valve 44 is connected below the top box 41, and an outer sleeve 45 is connected below the air intake valve 44. An extrusion rod 46 is provided below the outer sleeve 45, a piston 47 is provided inside the outer sleeve 45, and an inner air bag 48 is installed inside the top box 41.

[0053] The top box 41 is connected to the supporting bottom frame 51 through a connecting frame 43 , and an upper air valve 42 is installed above the top box 41 .

[0054] The upper air valve 42 is connected to the inner air bag 48 , the air inlet valve 44 is connected to the inner air bag 48 , and the upper end of the extrusion rod 46 extends into the outer sleeve 45 and is connected to the piston 47 .

[0055] In specific use, combined with the further explanation of Example 1, when the return spring 33 rebounds, its rebound force drives the upper template 1 to rise, and the upper template 1 pushes the piston 47 to move upward in the outer sleeve 45 through the extrusion rod 46. At this time, the movement of the piston 47 allows the air pressure to enter the inner air bag 48. As the gas is continuously injected, the inner air bag 48 is gradually inflated and expanded. The expansion of the inner air bag 48 plays a role in buffering and suppressing the rebound of the return spring 33. The gradually expanded inner air bag 48 increases the reverse force on the piston 47 and the upper template 1, thereby slowing down the upward rebound speed and strength of the return spring 33. In this process, by adjusting The air inlet valve 44 can control the gas flow entering the inner airbag 48, so that the inflation speed and pressure of the inner airbag 48 can be finely adjusted according to the actual situation to achieve the best rebound suppression effect. For example, when the rebound force of the return spring 33 is large, the air inlet flow can be appropriately increased to make the inner airbag 48 expand faster to enhance the suppression effect. When the rebound force is small, the air inlet flow can be reduced to avoid excessive pressure in the inner airbag 48. The inner airbag 48 can be inflated in advance through the upper air valve 42, and a proper amount of gas can be filled into the inner airbag 48 in advance, so that the rebound suppression can be prepared before the return spring 33 is about to rebound. In this way, the spring rebound can be responded to more quickly, ensuring that the inner airbag 48 can play a role at the moment of rebound, and can be flexibly selected according to actual needs.

[0056] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. An automatic mechanical press-fitting device for assembling a thrust rod of a heavy truck suspension, comprising: An upper template (1) and a lower template (2), wherein the lower template (2) is set below the upper template (1), characterized in that: a pressing mechanism (3) is provided between the upper template (1) and the lower template (2), and the pressing mechanism (3) comprises a guide column (31), a return spring (33) and a reverse pull arm (34), wherein a guide column (31) is respectively installed at the left front and right rear of the lower side of the upper template (1), and a return spring (33) is respectively installed on the outer side of the two guide columns (31), and a reverse pull arm (34) is provided at the lower right side of the upper template (1), and a reverse thrust rod (36) is connected to the front of the reverse pull arm (34) through a rotating pin (35), and a push tongue (310) is connected to the lower side of the reverse pull arm (34) through a locking hook (39), and the left side of the locking hook (39) is connected to the push tongue (310) through a pulling spring ( 311) is connected to a support block (312), a propulsion support (316) is installed below the support block (312), a retaining spring (314) is provided on the left side above the propulsion support (316), a retaining spring guide (315) is installed on the left side of the retaining spring (314), a main pressure head (319) is installed in the middle below the upper template (1), a main pressure flange (317) is provided in the middle above the lower template (2), a support rod (37) is installed in the front right side of the propulsion support (316), the support rod (37) is connected to the reverse thrust rod (36) through a guide pin (38) above, the left end of the reverse thrust rod (36) is connected to a guide slideway (318), a locking tongue (313) is installed on the front side below the propulsion support (316), and the pushing tongue (310) is connected to the propulsion support (316); A lubrication mechanism (5) is provided below the lower template (2), and the lubrication mechanism (5) comprises a supporting bottom frame (51), a lubrication pipe (52) and an oil receiving pan (53); a lubrication pipe (52) is provided below the corresponding positions of the supporting bottom frame (51) and the two guide pillars (31), and an oil receiving pan (53) is provided above and outside the lubrication pipe (52); A rebound suppression mechanism (4) is provided above the upper template (1), and the rebound suppression mechanism (4) includes a top box (41), an air valve, and an outer sleeve (45). An air intake valve (44) is connected below the top box (41), and an outer sleeve (45) is connected below the air intake valve (44). An extrusion rod (46) is provided below the outer sleeve (45), a piston (47) is provided inside the outer sleeve (45), and an inner air bag (48) is installed inside the top box (41).

2. The automatic mechanical press-fitting device for assembling a thrust rod of a heavy truck suspension according to claim 1 is characterized in that: The upper and lower ends of the two return springs (33) are respectively connected to the upper mold plate (1) and the lower mold plate (2), and the lower ends of the two guide pillars (31) respectively penetrate the lower mold plate (2).

3. The automatic mechanical press-fitting device for assembling the thrust rod of a heavy truck suspension according to claim 2 is characterized in that: A threaded bottom head (54) is connected to each of the two lubricating liquid pipes (52) below, and a mounting hole (56) is opened to each of the two threaded bottom heads (54) below.

4. The automatic mechanical press-fitting device for assembling the thrust rod of a heavy truck suspension according to claim 3 is characterized in that: The lubricating liquid pipe (52) is filled with lubricating oil, and the upper surface of the oil receiving pan (53) is recessed downward to form an oil receiving groove (57).

5. The automatic mechanical press-fitting device for assembling the thrust rod of a heavy truck suspension according to claim 4 is characterized in that: A central tube (55) is installed in the middle of the oil receiving pan (53), and the lower template (2) is connected to the supporting bottom frame (51).

6. The automatic mechanical press-fitting device for assembling the thrust rod of a heavy truck suspension according to claim 5 is characterized in that: The inner wall of the central tube (55) and the inner wall of the mounting hole (56) are both provided with internal threads, and the outer wall of the upper end of the threaded bottom head (54) and the outer wall of the upper end of the lubricating liquid tube (52) are both provided with external threads.

7. The automatic mechanical press-fitting device for assembling the thrust rod of a heavy truck suspension according to claim 6 is characterized in that: The lower end of the threaded bottom head (54) is rotatably connected to the mounting hole (56) through a thread, and the oil receiving pan (53) is rotatably connected to the lubricating liquid pipe (52) through a central pipe (55) through a thread.

8. The automatic mechanical press-fitting device for assembling a thrust rod of a heavy truck suspension according to claim 1 is characterized in that: The top box (41) is connected to the supporting bottom frame (51) via a connecting frame (43), and an upper air valve (42) is installed above the top box (41).

9. The automatic mechanical press-fitting device for assembling the thrust rod of a heavy truck suspension according to claim 8, characterized in that: The upper air valve (42) is connected to the inner air bag (48), the air inlet valve (44) is connected to the inner air bag (48), and the upper end of the extrusion rod (46) extends into the outer sleeve (45) and is connected to the piston (47).

10. The automatic mechanical press-fitting device for assembling a thrust rod of a heavy truck suspension according to claim 1, characterized in that: The diameters of the two oil receiving pans (53) are the same, and the diameter of the lubricating liquid pipe (52) is greater than the diameter of the guide column (31).

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