A device for press-fitting a bushing of an automobile connecting rod

Abstract

The application relates to a car connecting rod bushing press-fitting device which comprises a workbench, a telescopic pressing assembly is installed on the workbench, a pressing column is fixed on the telescopic pressing assembly, a driving assembly is fixed on the workbench and located below the pressing column, two car connecting rod clamping plates are detachably connected to the driving assembly, the driving assembly can drive the two car connecting rod clamping plates to move towards each other and clamp two ends of a car connecting rod, and the telescopic pressing assembly can drive the pressing column to press a bushing into a smaller end of the car connecting rod. The telescopic pressing assembly drives the pressing column to move downwards and press the bushing at the smaller end of the car connecting rod, the bushing is pressed into the smaller end of the car connecting rod, and thus the car connecting rod bushing press-fitting work is completed; the driving assembly has a short stroke, can quickly and conveniently complete the clamping work of the two ends of the car connecting rod, and can centrally position the car connecting rod in the driving assembly, so that dislocation is not prone to occurring during installation.

Description

Technical Field

[0001] This invention relates to the field of automotive connecting rod press-fitting and positioning, and particularly to an automotive connecting rod bushing press-fitting device. Background Technology

[0002] The connecting rod in an automobile connects the piston and crankshaft, transmitting the forces acting on the piston to the crankshaft and converting the piston's reciprocating motion into the crankshaft's rotational motion. The connecting rod assembly consists of the connecting rod body, connecting rod big end cap, connecting rod small end bushing, connecting rod big end bearing, and connecting rod bolts (or screws). The connecting rod assembly bears the force of the gas transmitted from the piston pin, as well as its own oscillation and the reciprocating inertial force of the piston assembly; the magnitude and direction of these forces change periodically. Therefore, the connecting rod is subjected to alternating loads such as compression and tension. Automobile connecting rods must possess sufficient fatigue strength and structural rigidity. Insufficient fatigue strength often leads to the fracture of the connecting rod body or connecting rod bolts, resulting in a major accident causing complete engine failure.

[0003] In related technologies, existing connecting rod bushing press-fitting processes typically involve using a press-fitting machine to press the bushing into the small end of the automotive connecting rod. However, this method cannot effectively clamp the bushing during installation, causing the connecting rod to wobble and misalign during installation. Summary of the Invention

[0004] This invention provides an automotive connecting rod bushing pressing device to solve the problem in related technologies where bushings cannot be effectively clamped during installation, causing the automotive connecting rod to wobble and misalign during installation.

[0005] This invention provides an automotive connecting rod bushing press-fitting device, comprising:

[0006] A workbench, wherein the workbench is equipped with a telescopic clamping assembly, and the telescopic clamping assembly is fixed with a pressing column;

[0007] A drive assembly is fixed to the worktable and located below the pressing column, and the drive assembly is detachably connected to two automotive linkage clamping plates;

[0008] The drive assembly can drive the two automotive link clamping plates to move towards each other and clamp them at both ends of the automotive link. The telescopic pressing assembly can drive the pressing column to press the bushing into the smaller end of the automotive link.

[0009] In some embodiments, the driving component includes:

[0010] Two plates are fixed to the workbench, the two plates are spaced apart, and a bidirectional threaded rod is rotatably connected between the two plates. Two threaded blocks are threadedly connected to the outer wall of the bidirectional threaded rod.

[0011] Two rods are distributed on opposite sides of the bidirectional threaded rod. The length direction of the rods is consistent with the length direction of the bidirectional threaded rod. Two sliders are slidably connected to the outer wall of each rod, and each threaded block is slidably connected to the two sliders.

[0012] Each of the aforementioned automotive link clamping plates is detachably connected to one of the aforementioned threaded blocks.

[0013] In some embodiments, one end of the bidirectional threaded rod is coaxially provided with a receiving chamber, the side wall of the receiving chamber is provided with a groove, and the plate is provided with a limiting groove;

[0014] The driving component also includes:

[0015] A rotating handle is connected to the plate body, and an elastic telescopic block is connected to one end of the rotating handle located in the receiving cavity. The rotating handle is fixed with a limit rod.

[0016] When the handle moves to the point where the limiting rod is inserted into the limiting groove, the handle is locked and the elastic telescopic block is moved out of the groove; when the handle moves to the point where the limiting rod is moved out of the limiting groove, the handle is unlocked and the elastic telescopic block is moved into the groove.

[0017] In some embodiments, the plate is fixed with two sliding rods, the outer walls of the two sliding rods are slidably connected with rings, and a first elastic telescopic member is connected between the sliding rods and the rings;

[0018] The rotating handle is coaxially rotatably connected to the inside of the ring, and the elastic force of the first elastic telescopic member tends to push the rotating handle to move until the limiting rod is inserted into the limiting groove.

[0019] In some embodiments, each of the threaded blocks is fixed with a fixing seat, each of the fixing seats has an assembly cavity, and each of the fixing seats is fixed with an assembly telescopic component;

[0020] The automotive link clamping plate is connected to a second elastic telescopic member, and the second elastic telescopic member is connected to a connecting seat.

[0021] The automotive connecting rod clamping plate is placed in the assembly cavity via the connecting seat, and the assembly telescopic member is used to limit and fix the connecting seat at least partially in the assembly cavity.

[0022] In some embodiments, the first threaded block is fixed with an insert plate;

[0023] The second threaded block is fixed with a support platform, and the support platform has a slot on the side facing the insert plate. The support platform is provided with a first transmission mechanism, and the first transmission mechanism is connected to a support plate.

[0024] When the insert plate is inserted into the slot, the insert plate is driven by the first transmission mechanism to move the support plate upward and contact the bottom of the smaller end of the car connecting rod.

[0025] In some embodiments, the worktable is provided with a second transmission mechanism, the second transmission mechanism having two translation ends, each translation end having two limiting plates fixed thereon, and each pair of limiting plates corresponding to one of the automobile connecting rod clamping plates;

[0026] The pressing column moves downward through the second transmission mechanism, which drives the two translation ends to move towards each other, and causes each pair of limiting plates to abut against the back side of the corresponding automobile connecting rod clamping plate.

[0027] In some embodiments, the limiting plate has a friction coefficient increasing pad fixed to the side facing the corresponding automotive link clamping plate.

[0028] In some embodiments, a third elastic telescopic member is connected between the limiting plate and the translational end to which it is connected;

[0029] The translation end is fixed with a first conductive sheet, and the limiting plate is fixed with a second conductive sheet facing the first conductive sheet;

[0030] A controller, which is electrically connected to the first conductive sheet, the second conductive sheet, and the telescopic clamping assembly;

[0031] When the pressing column presses the bushing into the smaller end of the car connecting rod, the first conductive plate continues to move through the translation end and comes into contact with the second conductive plate. The controller receives the conduction signal of the first and second conductive plates and controls the telescopic pressing assembly to reset.

[0032] In some embodiments, the worktable is fixed with a fourth elastic telescopic member, the fourth elastic telescopic member is fixed with a platform, the drive assembly is fixed to the platform, and the platform is fixed with a guide plate;

[0033] When the pressing column moves down, it moves to contact the guide plate, and the guide plate pushes the platform to move along the axis of the fourth elastic telescopic member, so as to drive the smaller end of the car linkage clamped and fixed by the drive assembly to move directly below the pressing column.

[0034] The beneficial effects of the technical solution provided by this invention include: the driving component can clamp both ends of the car connecting rod in both directions to complete the preparation work; subsequently, the telescopic pressing component drives the pressing column to move down and press the bushing at the smaller end of the car connecting rod, pressing the bushing into the smaller end of the car connecting rod, thereby completing the press-fitting of the car connecting rod bushing; its driving component has a short stroke, which can quickly and conveniently complete the clamping work at both ends of the car connecting rod, and always keep the car connecting rod centered in the driving component, ensuring that misalignment is not easy to occur during installation; at the same time, the car connecting rod clamping plate is detachable and can be replaced and maintained in a timely manner, or replaced with a car connecting rod clamping plate adapted to different sizes of car connecting rods. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural schematic diagram of the automotive connecting rod bushing press-fitting device provided in an embodiment of the present invention;

[0037] Figure 2 A three-dimensional structural schematic diagram of the driving component provided in an embodiment of the present invention;

[0038] Figure 3 This is an exploded structural diagram of the rotating handle, the ring, and the plate provided in an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the internal structure of a bidirectional threaded rod with a cavity provided in an embodiment of the present invention;

[0040] Figure 5 A three-dimensional structural diagram of a hand-operated connection with an elastic telescopic block provided in an embodiment of the present invention;

[0041] Figure 6 An exploded structural diagram of the assembly telescopic component, the automobile connecting rod clamping plate, and the threaded block provided in an embodiment of the present invention;

[0042] Figure 7 A three-dimensional structural diagram of the support platform and the first transmission mechanism provided in an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the internal three-dimensional structure of the foundation provided in an embodiment of the present invention;

[0044] Figure 9 for Figure 1 A magnified structural diagram of A in the middle;

[0045] Figure 10 This is a three-dimensional structural diagram of the second transmission mechanism provided in an embodiment of the present invention;

[0046] Figure 11 A three-dimensional structural diagram of the first conductive sheet and the second conductive sheet provided in an embodiment of the present invention;

[0047] Figure 12 This is a three-dimensional structural diagram of the fourth elastic telescopic member and guide plate provided in an embodiment of the present invention.

[0048] In the picture:

[0049] 1. Workbench; 11. Fourth elastic telescopic component; 111. First fixed rod; 112. First spring; 113. Sliding block; 12. Platform; 13. Guide plate;

[0050] 2. Telescopic clamping assembly; 3. Pressing column;

[0051] 4. Drive assembly; 41. Plate; 411. Limiting groove; 412. Slide rod; 413. Ring; 414. First elastic telescopic component; 42. Bidirectional threaded rod; 421. Receiving chamber; 4211. Groove; 422. Limiting strip; 43. Threaded block; 431. Fixing seat; 4311. Assembly cavity; 432. Assembly telescopic component; 4321. Second fixing rod; 4322. Assembly plate; 4323. Second spring; 433. Insert plate; 434. Support; 4341. Slot; 4342. The first elastic telescopic component; A transmission mechanism; 43421, screw; 43422, first gear; 43423, threaded plate; 43424, third fixed rod; 43425, third spring; 43426, stop plate; 43427, receiving block; 43428, first rack; 43429, fourth spring; 4343, support plate; 4344, through hole; 44, rod body; 45, slider; 46, handle; 461, elastic telescopic block; 4611, sixth spring; 4612, limit block; 462, limit rod;

[0052] 5. Automotive connecting rod clamping plate; 51. Second elastic telescopic component; 511. Fifth spring; 512. Fourth fixing rod; 52. Connecting seat;

[0053] 6. Second transmission mechanism; 61. Directional wheel pull rope; 62. Double-sided rack; 63. Fixing frame; 631. Extension rod; 632. Spring telescopic rod; 64. Second gear; 65. Third gear; 66. Second rack; 67. Push rod; 68. Third elastic telescopic component;

[0054] 7. Limiting plate; 71. Friction coefficient increasing pad;

[0055] 8. First conductive sheet; 9. Second conductive sheet. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] This invention provides an automotive connecting rod bushing pressing device to solve the problem in related technologies where bushings cannot be effectively clamped during installation, causing the automotive connecting rod to wobble and misalign during installation.

[0058] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides an automotive connecting rod bushing pressing device, which includes: a worktable 1, on which a telescopic pressing assembly 2 is installed, and a pressing column 3 is fixedly attached to the telescopic pressing assembly 2; and a drive assembly 4, which is fixed to the worktable 1 and located below the pressing column 3. The drive assembly 4 is detachably connected to two automotive connecting rod clamping plates 5. The drive assembly 4 can drive the two automotive connecting rod clamping plates 5 to move towards each other and clamp the two ends of the automotive connecting rod. The telescopic pressing assembly 2 can drive the pressing column 3 to press the bushing into the smaller end of the automotive connecting rod.

[0059] The workbench 1 can be rectangular in cross-section. The telescopic clamping assembly 2 can be installed on the inner top wall of the workbench 1. The telescopic end of the telescopic clamping assembly 2 can extend and retract in the vertical direction, thereby driving the pressing column 3 connected to it to move up and down. The drive assembly 4 is fixed on the workbench 1 and located below the pressing column 3. The drive assembly 4 can have two drive ends, and each drive end can be fixed with a car link clamping plate 5. It can drive the two car link clamping plates 5 to move in a straight line towards each other until they contact and clamp the two ends of the car link that are placed inside, thus completing the clamping work. The outer contour of the two car link clamping plates 5 and the end of the car link they clamp can be matched to ensure stable clamping and ensure subsequent pressing work.

[0060] Specifically, the drive assembly 4 can clamp both ends of the car connecting rod in both directions to complete the preparation work. Subsequently, the telescopic clamping assembly 2 drives the pressing column 3 to move down and press the bushing at the smaller end of the car connecting rod, pressing the bushing into the smaller end of the car connecting rod, thereby completing the press-fitting of the car connecting rod bushing. The drive assembly 4 has a short stroke, which can quickly and conveniently complete the clamping work at both ends of the car connecting rod, and always keep the car connecting rod centered in the drive assembly 4 to ensure that misalignment is not easy to occur during installation. At the same time, the car connecting rod clamping plate 5 is detachable and can be replaced and maintained in a timely manner, or the car connecting rod clamping plate 5 can be replaced with one that is adapted to different sizes of car connecting rods.

[0061] Furthermore, such as Figure 1 As shown, the telescopic clamping assembly 2 can be driven by a hydraulic cylinder or an electric push rod. There can be two hydraulic cylinders or electric push rods, and they are aligned in the same direction along the interval of the car connecting rod clamping plate 5. The telescopic ends of the two hydraulic cylinders or electric push rods can be connected together by a lifting plate, and the pressing column 3 can be fixed to the bottom of the lifting plate.

[0062] Furthermore, the left and right ends of the lifting plate can be slidably connected to the left and right inner side walls of the worktable 1, and a spring is connected between the lifting plate and the worktable 1. When the lifting plate moves down, the spring is compressed, which plays a certain role in stabilizing and buffering the lifting plate when it moves down (i.e., pressing the pressing column 3), preventing the pressing column 3 from moving down too much and causing damage to the car connecting rod.

[0063] In some embodiments, such as Figure 2 As shown, the drive assembly 4 may include: two plates 41 fixed to the worktable 1, the two plates 41 being spaced apart and rotatably connected to each other by a bidirectional threaded rod 42, the outer wall of the bidirectional threaded rod 42 being threaded with two threaded blocks 43; two rods 44 distributed on opposite sides of the bidirectional threaded rod 42, the length direction of the rods 44 being consistent with the length direction of the bidirectional threaded rod 42, the outer wall of each rod 44 being slidably connected to two sliders 45, and each threaded block 43 being slidably connected to two sliders 45; each automotive connecting rod clamping plate 5 is detachably connected to one of the threaded blocks 43.

[0064] Two plates 41 are spaced apart along the left-right direction of the worktable 1 and fixed on the worktable 1. A bidirectional threaded rod 42 is rotatably mounted between the two plates 41, and two threaded blocks 43 are threadedly connected to the outer wall of the bidirectional threaded rod 42. Rods 44 are fixed to the front and rear sides of the plates 41, with two rods 44 distributed on the front and rear sides of the bidirectional threaded rod 42. Two sliders 45 are slidably connected to each rod 44, each connected to a threaded block 43. The rods 44 can limit the movement of the threaded blocks 43, ensuring linear movement of the two threaded blocks 43. The bidirectional threaded rod 42 has two threaded sections with opposite thread directions, each threaded section being threadedly connected to a threaded block 43, allowing the two threaded blocks 43 to move closer or further apart.

[0065] In some embodiments, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 The bidirectional threaded rod 42 has a coaxially formed receiving chamber 421 at one end, and a groove 4211 is formed on the side wall of the receiving chamber 421. The plate body 41 has a limiting groove 411. The driving assembly 4 may further include: a handle 46, which is connected to the plate body 41, and an elastic telescopic block 461 is connected to one end of the handle 46 located in the receiving chamber 421. The handle 46 is fixed with a limiting rod 462. When the handle 46 moves to the point where the limiting rod 462 is inserted into the limiting groove 411, the handle 46 is locked, and the elastic telescopic block 461 is moved out of the groove 4211. When the handle 46 moves to the point where the limiting rod 462 is moved out of the limiting groove 411, the handle 46 is unlocked, and the elastic telescopic block 461 is moved into the groove 4211.

[0066] Among them, such as Figure 2 and Figure 3 As shown, the right end of the bidirectional threaded rod 42 can be provided with a receiving chamber 421, such as... Figure 4 As shown, a groove 4211 can be formed in the inner wall of the receiving chamber 421, such as... Figure 5As shown, an elastic telescopic block 461 can be fixed to the side wall of the handle 46. Specifically, when the handle 46 moves linearly away from the receiving chamber 421 and the elastic telescopic block 461 moves into the groove 4211 (at this time, the limiting rod 462 is out of the limiting groove 411), the handle 46 and the bidirectional threaded rod 42 are connected together in a limiting manner. At this time, the operator can drive the bidirectional threaded rod 42 to rotate by rotating the handle 46, thereby realizing the clamping or unlocking of the car connecting rod. When the handle 46 moves linearly into the receiving chamber 421 and the elastic telescopic block 461 moves into the inner side of the receiving chamber 4211 (at this time, the limiting rod 462 is inserted into the limiting groove 411), the handle 46 is limited and fixed on the plate 41. This can prevent the operator from accidentally touching the handle 46 and causing the bidirectional threaded rod 42 to rotate, thus ensuring the reliability of the car connecting rod being clamped.

[0067] Furthermore, such as Figure 5 As shown, the elastic telescopic block 461 may include a sixth spring 4611 and a limiting block 4612, such as Figure 4 As shown, the sixth spring 4611 can be installed inside the opposite sides of the turner 46.

[0068] Furthermore, such as Figure 5 As shown, the limiting block 4612 has a groove on the side facing the receiving chamber 421. A limiting strip 422 is fixed to the inner wall of the receiving chamber 421. When the limiting block 4612 moves out of the groove 4211, it can slide along the limiting strip 422 through the groove, ensuring the stability and reliability of its movement. When the handle 46 is fixed to the plate 41, it is also connected to the bidirectional threaded rod 42. When the pressing column 3 is over-pressed, its two threaded blocks 43 will move away from each other, causing the bidirectional threaded rod 42 to rotate in the opposite direction. At this time, the handle 46 is also connected to the bidirectional threaded rod 42, limiting its rotation and preventing forced rotation.

[0069] Furthermore, such as Figure 4 As shown, the inner wall of the groove 4211 near the limiting strip 422 is inclined, and the end face of the limiting strip 422 near the groove 4211 is also inclined. The two are located on the same inclined surface, which can ensure that the elastic telescopic block 461 can move smoothly into or out of the groove 4211.

[0070] In some embodiments, such as Figure 3As shown, the plate 41 is fixed with two sliding rods 412, and the outer walls of the two sliding rods 412 are slidably connected to a ring 413. A first elastic telescopic member 414 is connected between the sliding rods 412 and the ring 413. The handle 46 is coaxially rotatably connected to the inside of the ring 413, and the elastic force of the first elastic telescopic member 414 tends to push the handle 46 to move until the limiting rod 462 is inserted into the limiting groove 411.

[0071] After the clamping of the car link is completed, the elastic force of the first elastic telescopic member 414 can bring the ring 413 close to the bonding plate 41, drive the turner 46 to move synchronously, and make the limiting rod 462 on the turner 46 insert into the limiting groove 411, automatically completing the restriction of the rotation of the bidirectional threaded rod 42.

[0072] Specifically, the first elastic telescopic member 414 can be a spring, which is sleeved on the outer wall of the slide rod 412.

[0073] In some embodiments, such as Figure 2 and Figure 6 As shown, each of the threaded blocks 43 is fixed with a fixing seat 431, each fixing seat 431 has an assembly cavity 4311, and each fixing seat 431 is fixed with an assembly telescopic member 432; the automobile connecting rod clamping plate 5 is connected to a second elastic telescopic member 51, and the second elastic telescopic member 51 is connected to a connecting seat 52; the automobile connecting rod clamping plate 5 is placed in the assembly cavity 4311 via the connecting seat 52, and the assembly telescopic member 432 is used to limit and fix the connecting seat 52 at least partially within the assembly cavity 4311.

[0074] The telescopic assembly 432 at least partially limits and fixes the connecting seat 52 within the assembly cavity 4311, which can realize the fixing of the automotive connecting rod clamping plate 5, and also facilitates the replacement of the appropriate automotive connecting rod clamping plate 5 according to different specifications and sizes of automotive connecting rods.

[0075] Specifically, the second elastic telescopic component 51 may include a fifth spring 511 and a fourth fixing rod 512, enabling the automotive connecting rod clamping plate 5 to slide on the connecting seat 52. The fifth spring 511 and the fourth fixing rod 512 provide a buffering effect during clamping, preventing excessive clamping force and potential damage to components. The assembly telescopic component 432 may include a second fixing rod 4321, an assembly plate 4322, and a second spring 4323. The assembly plate 4322 is elastically moved and inserted into the assembly cavity 4311, ensuring the connecting seat 52 is stably positioned on the fixing seat 431, thereby guaranteeing the installation stability of the automotive connecting rod clamping plate 5.

[0076] In some embodiments, such as Figure 2 , Figure 7 and Figure 8 As shown, the first threaded block 43 is fixed with an insert plate 433; the second threaded block 43 is fixed with a support platform 434, and the support platform 434 has a slot 4341 on the side facing the insert plate 433. The support platform 434 is provided with a first transmission mechanism 4342, and the first transmission mechanism 4342 is connected to a support plate 4343. When the insert plate 433 is inserted into the slot 4341, the insert plate 433 drives the support plate 4343 to move upward via the first transmission mechanism 4342 and contact the bottom of the smaller end of the car connecting rod.

[0077] When the two car link clamping plates 5 move towards each other to clamp the car link, the two threaded blocks 43 move towards each other and drive the right insert plate 433 to insert into the left slot 4341. The first transmission mechanism 4342 drives the support plate 4343 to move upward and contact the bottom of the smaller end of the car link. This can support the bottom of the smaller end of the car link and prevent the risk of detachment when the smaller end of the car link is pressed by the pressing column 3.

[0078] Specifically, such as Figure 7 and Figure 8 As shown, the first transmission mechanism 4342 may include a screw 43421, a first gear 43422, a threaded plate 43423, a third fixed rod 43424, a third spring 43425, a stop plate 43426, a receiving block 43427, a first rack 43428, and a fourth spring 43429. The stop plate 43426 is slidably installed inside the support 434, and the fourth spring 43429 is connected between the stop plate 434 and the support 434. The receiving block 43427 is slidably connected to the through hole 4344 on the side wall of the support 434. The receiving block 43427 and the stop plate 43428 are connected to each other. 3426 is connected, and the receiving block 43427 is also connected to the first rack 43428 on the outer side wall of the support platform 434. The outer side wall of the support platform 434 is rotatably connected to the screw 43421. The outer wall of the screw 43421 is threadedly connected to the threaded plate 43423 and the first gear 43422 is fixed thereon. The other side wall of the support platform 434 is fixed to the third fixing rod 43424. The outer wall of the third fixing rod 43424 is fitted with the third spring 43425. One end of the support plate 4343 is fixed to the threaded plate 43423, and the other end is slidably connected to the third fixing rod 43424.

[0079] The transmission principle of the first transmission mechanism 4342 is as follows: when the insert plate 433 is inserted into the slot 4341 (at this time, the two threaded blocks 43 are in a state of close proximity), it will push the stop plate 43426 to move inward and compress the fourth spring 43429. The stop plate 43426 will drive the first rack 43428 to move backward through the receiving block 43427, and through the first gear 43422, drive the threaded plate 43423 to move upward. Under the limit of the third fixed rod 43424, the support plate 4343 moves upward. Finally, when the car connecting rod clamping plate 5 is clamped, its support plate 4343 will support the bottom of the smaller end of the car connecting rod. When the insert plate 433 moves out of the slot 4341 (at this time, the two threaded blocks 43 move in the same direction), the stop plate 43426 will be reset under the elastic force of the fourth spring 43429. At this time, the first rack 43428 moves forward and is driven by the first gear 43422 to drive the threaded plate 43423 to move down, so that the support plate 4343 moves down and resets. The right end of the support plate 4343 will also be assisted in moving down and resetting under the elastic force of the third spring 43425.

[0080] In some embodiments, such as Figure 1 , Figure 9 and Figure 10 As shown, the workbench 1 is provided with a second transmission mechanism 6. The second transmission mechanism 6 has two translation ends. Each translation end is fixed with two limiting plates 7, and each pair of limiting plates 7 corresponds to one of the automobile connecting rod clamping plates 5. The pressing column 3 moves down through the second transmission mechanism 6, which can drive the two translation ends to move towards each other, and make each pair of limiting plates 7 abut against the back side of the corresponding automobile connecting rod clamping plate 5.

[0081] During the downward movement of the pressing column 3, the limiting plate 7 on the back side of the car connecting rod clamping plate 5 will also move under the transmission of the second transmission mechanism 6. This causes the limiting plate 7 to abut against the back side of the corresponding car connecting rod clamping plate 5, thus limiting and protecting the car connecting rod clamping plate 5 and preventing uneven force on the car connecting rod clamping plate 5, which could lead to tilting of the car connecting rod clamping plate 5 and thus cause the car connecting rod clamping failure.

[0082] Specifically, such as Figure 1 , Figure 9 and Figure 10As shown, the second transmission mechanism 6 may include: a directional wheel pull rope 61, a double-sided rack 62, a fixed frame 63, a second gear 64, a third gear 65; a second rack 66 and a push rod 67; one end of the directional wheel pull rope 61 can be fixed to the lifting plate, and the other end can be fixed to the double-sided rack 62; the fixed frame 63 can be fixed on the worktable 1 and can be located in front of the drive assembly 4; the second gear 64 and the third gear 65 can be rotatably connected to the left side of the fixed frame 63, and the second gear 64 and the third gear 65 can be synchronously transmitted through a transmission belt; the fixed frame 63 can also be slidably connected to the second rack 66, one end of the second rack 66 is fixed to the push rod 67, and every two limit plates 7 are fixed on one push rod 67.

[0083] The specific transmission principle of the second transmission mechanism 6 is as follows: When the pressing column 3 moves down and drives the lifting plate to move down, it will pull the upper end of the directional wheel pull rope 61 to move down, thereby driving the double-sided rack 62 to move up. The double-sided rack 62 will drive the second gear 64. The second gear 64 will drive the third gear 65 to rotate synchronously under the transmission belt. The third gear 65 will drive the second rack 66 to move. The second rack 66 will drive the push rod 67 to approach the back side of the car connecting rod clamping plate 5 (the push rods 67 on the left and right sides form the two translation ends of the second transmission mechanism 6), so that the limiting plate 7 of the push rod 67 abuts against the two ends of the back side of the corresponding car connecting rod clamping plate 5, completing the limiting work of the limiting plate 7 on the car connecting rod clamping plate 5. Similarly, when the pressing column 3 moves upward, it drives the double-sided rack 62 to move downward. The double-sided rack 62 will drive the second gear 64 to rotate in the opposite direction. The second gear 64 will drive the third gear 65 to rotate in the opposite direction synchronously under the transmission belt. The third gear 65 will drive the second rack 66 to move in the opposite direction. The second rack 66 will drive the push rod 67 away from the back side of the car connecting rod clamping plate 5, releasing the limiting plate 7 from limiting the car connecting rod clamping plate 5.

[0084] More specifically, the second rack 66 is slidably connected to the fixed frame 63 via the extension rod 631, and a spring telescopic rod 632 is fixed between the second rack 66 and the fixed frame 63. The spring telescopic rod 632 can assist the second rack 66 in moving and resetting, thereby driving the limit plate 7 to move and reset.

[0085] In some embodiments, such as Figure 11 As shown, a friction coefficient increasing pad 71 is fixed to the side of the limiting plate 7 facing the corresponding automotive connecting rod clamping plate 5. The friction coefficient increasing pad 71 increases the static friction between the limiting plate 7 and the automotive connecting rod clamping plate 5, ensuring that the limiting plate 7 can provide a sufficiently stable limiting function.

[0086] In some embodiments, such as Figure 11As shown, a third elastic telescopic member 68 is connected between the limiting plate 7 and the translation end connected to it; a first conductive sheet 8 is fixed to the translation end, and a second conductive sheet 9 is fixed to the limiting plate 7 facing the first conductive sheet 8; a controller is electrically connected to the first conductive sheet 8, the second conductive sheet 9 and the telescopic pressing assembly 2; when the pressing column 3 presses the bushing into the smaller end of the car connecting rod, the first conductive sheet 8 continues to move through the translation end and comes into contact with the second conductive sheet 9. The controller receives the conduction signal of the first conductive sheet 8 and the second conductive sheet 9 and controls the telescopic pressing assembly 2 to reset.

[0087] When the pressing column 3 continues to move downward, the pressing column 3 will drive the limiting plate 7 to continue moving through the second transmission mechanism 6, which will cause the first conductive plate 8 to continue moving through the translation end (push rod 67) and come into contact with the second conductive plate 9, indicating that the bushing installation work is completed. At this time, the controller will control the telescopic pressing assembly 2 to reset.

[0088] In some embodiments, such as Figure 1 and Figure 12 The workbench 1 is fixed with a fourth elastic telescopic member 11, the fourth elastic telescopic member 11 is fixed with a platform 12, the drive assembly 4 is fixed with the platform 12, and the platform 12 is fixed with a guide plate 13; when the pressing column 3 moves down, the pressing column 3 moves to contact the guide plate 13, and the guide plate 13 pushes the platform 12 to move along the axis of the fourth elastic telescopic member 11, so as to drive the smaller end of the car connecting rod clamped and fixed by the drive assembly 4 to move directly below the pressing column 3.

[0089] In its initial state, the platform 12 is not located directly below the pressing column 3, but can be located in front of or behind the pressing column 3. This allows the operator to place the car connecting rod inside the drive assembly 4 and perform the clamping work through the drive assembly 4. During the subsequent pressing process, as the pressing column 3 moves downward, it will move and contact the guide plate 13. The guide plate 13 will push the platform 12 to move along the axis of the fourth elastic telescopic member 11, thereby driving the smaller end of the car connecting rod clamped and fixed by the drive assembly 4 to move forward or backward to directly below the pressing column 3. When the pressing column 3 continues to move, it will press the bushing into the car connecting rod. At this time, the platform 12 cannot continue to move under the downward pressure of the pressing column 3, thus restricting the platform 12 from moving further.

[0090] Specifically, the fourth elastic telescopic component 11 may include a first fixed rod 111, a first spring 112, and a sliding block 113. The first spring 112 enables the platform 12 to move and reset to its initial state. The first fixed rod 111 and the sliding block 113 are installed inside the working surface of the worktable 1 through a receiving groove, and the bottom of the platform 12 is aligned with the sliding block 113, with the platform 12 always covering the receiving groove. This ensures that external impurities do not enter the receiving groove, thus guaranteeing the service life of the fourth elastic telescopic component 11.

[0091] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0092] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0093] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pressing device for automotive connecting rod bushings, characterized in that, It includes: Workbench (1), the workbench (1) is equipped with telescopic clamping assembly (2), the telescopic clamping assembly (2) is fixed with pressing column (3); The drive assembly (4) is fixed to the worktable (1) and located below the pressing column (3). The drive assembly (4) is detachably connected to two automotive linkage clamping plates (5). The drive assembly (4) can drive the two car link clamping plates (5) to move towards each other and clamp at both ends of the car link. The telescopic pressing assembly (2) can drive the pressing column (3) to press the bushing into the smaller end of the car link. The driving component (4) includes: Two plates (41) are fixed to the workbench (1). The two plates (41) are spaced apart and a bidirectional threaded rod (42) is rotatably connected between the two plates (41). The outer wall of the bidirectional threaded rod (42) is threaded with two threaded blocks (43). Two rods (44) are distributed on opposite sides of the bidirectional threaded rod (42). The length direction of the rods (44) is consistent with the length direction of the bidirectional threaded rod (42). Two sliders (45) are slidably connected to the outer wall of each rod (44). Each threaded block (43) is slidably connected to the two sliders (45). Each of the automotive link clamping plates (5) is detachably connected to one of the threaded blocks (43); One end of the bidirectional threaded rod (42) is coaxially provided with a receiving chamber (421), the side wall of the receiving chamber (421) is provided with a groove (4211), and the plate (41) is provided with a limiting groove (411). The driving component (4) also includes: A rotating handle (46) is connected to the plate (41), and one end of the rotating handle (46) located in the receiving chamber (421) is connected to an elastic telescopic block (461). The rotating handle (46) is fixed with a limit rod (462). When the handle (46) moves to the point where the limiting rod (462) is inserted into the limiting groove (411), the handle (46) is locked, and the elastic telescopic block (461) is moved out of the groove (4211); when the handle (46) moves to the point where the limiting rod (462) is moved out of the limiting groove (411), the handle (46) is unlocked, and the elastic telescopic block (461) is moved into the groove (4211); The plate (41) is fixed with two slide rods (412), and the outer walls of the two slide rods (412) are slidably connected with rings (413), and a first elastic telescopic member (414) is connected between the slide rods (412) and the rings (413). The rotating handle (46) is coaxially rotatably connected to the inside of the ring (413), and the elastic force of the first elastic telescopic member (414) tends to push the rotating handle (46) to move until the limiting rod (462) is inserted into the limiting groove (411); Each of the threaded blocks (43) is fixed with a fixing seat (431), each of the fixing seats (431) is provided with an assembly cavity (4311), and each of the fixing seats (431) is fixed with an assembly telescopic component (432). The automobile linkage clamping plate (5) is connected to a second elastic telescopic member (51), and the second elastic telescopic member (51) is connected to a connecting seat (52). The automotive connecting rod clamping plate (5) is placed in the assembly cavity (4311) via the connecting seat (52), and the assembly telescopic member (432) is used to limit and fix the connecting seat (52) at least partially in the assembly cavity (4311). The first threaded block (43) is fixed with a insert plate (433); The second threaded block (43) is fixed with a support (434), and the support (434) has a slot (4341) on the side facing the insert plate (433). The support (434) is provided with a first transmission mechanism (4342), and the first transmission mechanism (4342) is connected to a support plate (4343). When the insert plate (433) is inserted into the slot (4341), the insert plate (433) is driven by the first transmission mechanism (4342) to move the support plate (4343) upward and contact the bottom of the smaller end of the car connecting rod.

2. The automotive connecting rod bushing press-fitting device as described in claim 1, characterized in that: The workbench (1) is provided with a second transmission mechanism (6), which has two translation ends. Each translation end is fixed with two limiting plates (7), and each pair of limiting plates (7) corresponds to one of the automobile connecting rod clamping plates (5). The pressing column (3) moves down through the second transmission mechanism (6), which can drive the two translation ends to move towards each other, and make each pair of limiting plates (7) abut against the back side of the corresponding automobile linkage clamping plate (5).

3. The automotive connecting rod bushing press-fitting device as described in claim 2, characterized in that: The limiting plate (7) has a friction coefficient increasing pad (71) fixed on the side facing the corresponding automobile connecting rod clamping plate (5).

4. The automotive connecting rod bushing press-fitting device as described in claim 2, characterized in that: A third elastic telescopic member (68) is connected between the limiting plate (7) and the translation end to which it is connected. The translation end is fixed with a first conductive sheet (8), and the limiting plate (7) is fixed with a second conductive sheet (9) facing the first conductive sheet (8). The controller is electrically connected to the first conductive sheet (8), the second conductive sheet (9), and the telescopic clamping assembly (2); When the pressing column (3) presses the bushing into the smaller end of the car connecting rod, the first conductive piece (8) continues to move through the translation end and comes into contact with the second conductive piece (9). The controller receives the conduction signal of the first conductive piece (8) and the second conductive piece (9) and controls the telescopic pressing assembly (2) to reset.

5. The automotive connecting rod bushing press-fitting device as described in claim 1, characterized in that: The workbench (1) is fixed with a fourth elastic telescopic member (11), the fourth elastic telescopic member (11) is fixed with a platform (12), the drive assembly (4) is fixed to the platform (12), and the platform (12) is fixed with a guide plate (13). When the pressing column (3) moves down, the pressing column (3) moves to contact the guide plate (13), and the guide plate (13) pushes the platform (12) to move along the axis of the fourth elastic telescopic member (11) so as to drive the smaller end of the car linkage clamped and fixed by the drive assembly (4) to move directly below the pressing column (3).

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