Press fitting equipment for mounting bearing of automobile steering device

Abstract

The invention relates to the field of bearing installation, and particularly discloses press-fitting equipment for installing a bearing of an automobile steering gear, which comprises a processing frame, a press-fitting assembly for pressing the bearing downwards is arranged on the processing frame, a clamping assembly is arranged between the processing frame and the press-fitting assembly, and a moving assembly is arranged on the processing frame. A driving assembly is arranged on the moving assembly, and a transmission assembly is arranged between the driving assembly and the press-fitting assembly. The press-fitting process is operated step by step, the preheating and pressing effect on the bearing and the steering gear can be achieved in the early-stage press-fitting process, the heating and pressing effect on the bearing and the steering gear can be achieved in the later-stage press-fitting process, the adjustment effect on the early-stage and later-stage pressing acting force can be achieved, the early-stage press-fitting acting force is small, and the press-fitting efficiency is improved. The damage to the bearing and the steering gear due to overlarge early-stage pressing acting force is avoided, so that the later-stage pressing acting force is large, the pressing frequency is reduced, the bearing is protected, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] This invention relates to the field of bearing installation technology, and in particular to a press-fitting device for installing automotive steering gear bearings. Background Technology

[0002] The automotive steering gear is a crucial component connecting the steering column and the steering tie rod. The force exerted by the steering column is transmitted to the steering tie rod through the steering gear. The steering gear bearing is a key component in the steering system, primarily used to support and reduce friction between moving parts within the steering gear, ensuring easy and precise steering wheel operation and extending the lifespan of the steering system. When the force exerted by the steering column is transmitted to the input shaft of the automotive steering gear, a bearing needs to be installed to ensure smooth rotation. During installation, the bearing is typically installed on the steering column, then the steering column is inserted into the interior of the automotive steering gear, and finally the bearing is installed in its mounting position on the automotive steering gear.

[0003] Existing patent CN107790996A discloses a bearing clamping and mounting device, including a base, a clamping assembly mounted on the base, and a support assembly for supporting the clamping assembly. The clamping assembly includes an ultrasonic transducer for generating high-frequency micro-amplitude vibrations, and a detachable pressure plate that directly contacts the bearing is located at the lower end of the ultrasonic transducer. This invention utilizes an ultrasonic transducer to clamp and mount the bearing. During the mounting and clamping process, the maximum pressure of the ultrasonic transducer is low and the pressure is stable, overcoming the shortcomings of existing bearing mounting methods that easily lead to bearing damage and reduced lifespan. The lower end of the amplitude transformer has a detachable pressure plate that directly contacts the bearing. The pressure plate is connected to the amplitude transformer by screws, facilitating the replacement of pressure plates of different sizes, adapting to different types of bearings, and having a wide range of applications.

[0004] The above structure can achieve the effect of pressing the bearing. However, during the installation of the bearing, due to the interference fit between the bearing and the car steering gear, the pressing force on the bearing will change with the pressing depth during the bearing installation process. In the early stage, it is often easy to press down, and the pressing force is small at this stage, allowing the bearing to be pressed smoothly into the car steering gear. In the later stage, the resistance increases. If the pressing force is the same as in the early stage, it will often lead to pressing difficulties and difficulty in pressing down. It is necessary to press down repeatedly, or even to the point that it cannot be pressed down at all. This can easily lead to improper installation of the bearing, resulting in abnormal conditions such as bearing loosening and failure. Moreover, the increased number of pressing times is not conducive to the protection of the bearing and reduces its service life.

[0005] Therefore, how to provide a press-fitting device for installing automotive steering gear bearings is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] One object of the present invention is to provide a press-fitting device for installing automotive steering gear bearings. The press-fitting device for installing automotive steering gear bearings according to the present invention includes a processing frame, a press-fitting assembly for pressing down the bearing on the processing frame, a snap-fitting assembly between the processing frame and the press-fitting assembly, a moving assembly on the processing frame, a driving assembly on the moving assembly, a transmission assembly between the driving assembly and the press-fitting assembly, a heating assembly connected to a hot oil system on the processing frame, a pressing assembly connected to the heating assembly on the processing frame, and a component adapted to the transmission assembly on the processing frame. The rotating assembly has a contact assembly between it and the pressing assembly. During the initial pressing stage, the moving assembly drives the driving assembly to a first position, placing the transmission assembly in a first state. While the driving assembly rotates, the pressing assembly performs initial pressing of the bearing, and simultaneously, the heating assembly preheats the bearing and the steering gear. During the later pressing stage, the moving assembly drives the driving assembly to a second position, placing the transmission assembly in a second state. While the driving assembly rotates, the pressing assembly performs later pressing of the bearing, and simultaneously, the heating assembly heats the bearing and the steering gear.

[0007] Preferably, the press-fitting assembly includes a sliding tube disposed on the processing frame, the sliding tube passing through the processing frame, a press-fitting tube communicating with the sliding tube being disposed on the sliding tube, and a press-fitting spring sleeved on the outer ring of the sliding tube being disposed between the press-fitting tube and the processing frame.

[0008] Preferably, the snap-fit ​​assembly includes a connecting plate disposed on the sliding tube, a guide rod disposed on the processing frame that penetrates the connecting plate, and a threaded rod threadedly connected to the connecting plate, the threaded rod threadedly penetrating the connecting plate.

[0009] Preferably, the moving component includes an electric push rod mounted on the processing frame, a mounting frame slidably disposed on the processing frame, and a push plate connected to the mounting frame at the output end of the electric push rod.

[0010] Preferably, the drive assembly includes a drive motor mounted on the mounting bracket, a drive shaft connected to the mounting bracket by a bearing, the drive shaft being connected to the output shaft of the drive motor, and a rotating disk one and a rotating disk two being fixedly sleeved on the drive shaft.

[0011] Preferably, the transmission assembly includes a connecting rod disposed on the press-fitting tube, a transmission rack disposed on the connecting rod, a sector rack one that meshes with the transmission rack on the outer ring of the first rotating disk, and a sector rack two that meshes with the transmission rack on the outer ring of the second rotating disk, wherein the number of teeth of the first sector rack is less than the number of teeth of the second sector rack.

[0012] Preferably, the heating assembly includes a heating oil cylinder mounted on the processing frame, a hot oil inlet pipe connected to the hot oil system, and a hot oil outlet pipe connected to the sliding pipe. Both the hot oil inlet pipe and the hot oil outlet pipe are equipped with a one-way valve.

[0013] Preferably, the extrusion assembly includes a support plate disposed on the processing frame, an extrusion rod disposed on the support plate and the heating oil cylinder, and an extrusion piston adapted to the heating oil cylinder disposed on the extrusion rod.

[0014] Preferably, the contact assembly includes a mounting plate disposed on the extrusion rod, a compression spring sleeved on the outer ring of the extrusion rod is disposed between the mounting plate and the support plate, and a contact ball is mounted on the mounting plate.

[0015] Preferably, the rotating assembly includes a rotating rod connected to the processing frame by a bearing, a rotating gear fixedly sleeved on the rotating rod that meshes with both the first and second sector racks, and a cam fixedly sleeved on the rotating rod that is adapted to the contact ball.

[0016] The beneficial effects of this invention are as follows:

[0017] In this invention, when installing the steering gear bearing, the bearing is first installed on the steering column, then the steering column is inserted into the steering gear, aligning the bearing with the bearing mounting position of the steering gear. The pressing assembly is then pulled, raising it to a higher height. A locking assembly is used to lock and limit the pressing assembly, preventing it from falling. The steering gear is then installed on the processing frame, and the steering column and bearing are moved synchronously, forcing the bearing closer to the bearing mounting position of the steering gear, aligning the steering column with the pressing assembly. The locking assembly is then used to release the pressing assembly, allowing it to move to the appropriate position. During the initial pressing stage, a moving assembly is activated, causing it to drive the drive assembly and transmission assembly to move to... In the first position, the transmission assembly is in its first state. Due to the simplicity of the initial pressing, the drive assembly is activated, which in turn moves the transmission assembly, which in turn moves the pressing assembly. When the pressing assembly reaches a lower height, it automatically releases, forcing the bearing down into the steering gear. Simultaneously, the transmission assembly moves the contact assembly, which in turn moves the pressing assembly. This causes the pressing assembly to spray hot oil from the heating assembly into the pressing assembly, releasing the hot oil onto the bearing and steering gear, thus preheating them and completing the initial pressing operation. During the later pressing stage, the moving assembly is activated. The moving component drives the drive component and transmission component to the second position, placing the transmission component in the second state. The drive component is then activated, driving the transmission component, which in turn drives the pressing component. When the pressing component reaches a higher height, it automatically releases, forcing it to exert a greater downward pressure on the bearing until the bearing is fully pressed into the steering gear. Due to the relative difficulty of the later pressing process, the transmission component drives the contact component, which in turn drives the pressing component. This causes the pressing component to spray more hot oil from the heating component into the pressing component, releasing more hot oil from the pressing component onto the bearing and steering gear, thus achieving [the desired effect]. The heating effect of the bearing and steering gear utilizes the principle of thermal expansion and contraction to reduce assembly resistance, thereby facilitating the subsequent pressing operation of the bearing. In summary, the pressing equipment for installing automotive steering gear bearings in this application divides the pressing process into steps. In the initial pressing stage, it can achieve the effect of preheating and pressing the bearing and steering gear. In the later pressing stage, it can achieve the effect of heating and pressing the bearing and steering gear. It can also adjust the pressing force in the early and later stages, so that the pressing force in the early stage is small, avoiding excessive pressing force that could damage the bearing and steering gear. The pressing force in the later stage is large, reducing the number of pressing operations, which helps protect the bearing and improves its service life. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a front view of the present invention;

[0021] Figure 3 This is a partial structural diagram of the present invention;

[0022] Figure 4 For the present invention Figure 3 Partial structural entity diagram;

[0023] Figure 5 For the present invention Figure 3 Another part of the structural entity diagram;

[0024] Figure 6 This is a structural entity diagram of the mobile component of the present invention;

[0025] Figure 7 This is a schematic diagram of the drive assembly and transmission assembly of the present invention;

[0026] Figure 8 This is a schematic diagram of the drive assembly and transmission assembly of the present invention from another direction;

[0027] Figure 9 This is a structural entity diagram of the rotating assembly of the present invention;

[0028] Figure 10 This is a structural diagram of the extrusion assembly of the present invention.

[0029] In the diagram: 1. Processing frame; 2. Press-fit assembly; 201. Sliding tube; 202. Press-fit tube; 203. Press-fit spring; 3. Snap-fit ​​assembly; 301. Connecting plate; 302. Guide rod; 303. Threaded rod; 4. Moving assembly; 401. Electric push rod; 402. Mounting bracket; 403. Push plate; 5. Drive assembly; 501. Drive motor; 502. Drive shaft; 503. Rotary disk one; 504. Rotary disk two; 6. Transmission assembly; 601. Connecting rod; 60 2. Transmission spur rack; 603. Sector rack one; 604. Sector rack two; 7. Heating assembly; 701. Heating cylinder; 702. Hot oil inlet pipe; 703. Hot oil outlet pipe; 8. Extrusion assembly; 801. Support plate; 802. Extrusion rod; 803. Extrusion piston; 9. Rotation assembly; 901. Rotation rod; 902. Rotation gear; 903. Cam; 10. Contact assembly; 1001. Mounting plate; 1002. Extrusion spring; 1003. Contact ball. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0031] Example 1:

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a pressing device for installing automotive steering gear bearings according to the present invention includes a processing frame 1, a pressing assembly 2 for pressing down the bearing on the processing frame 1, a snap-fit ​​assembly 3 between the processing frame 1 and the pressing assembly 2, a moving assembly 4 on the processing frame 1, a driving assembly 5 on the moving assembly 4, a transmission assembly 6 between the driving assembly 5 and the pressing assembly 2, a heating assembly 7 connected to a hot oil system on the processing frame 1, a pressing assembly 8 connected to the heating assembly 7 on the processing frame 1, and a rotating assembly 9 adapted to the transmission assembly 6 on the processing frame 1. A contact component 10 is provided between component 9 and extrusion component 8; wherein, during the early stage of pressing, the moving component 4 drives the driving component 5 to move to the first position, so that the transmission component 6 is in the first state. When the driving component 5 rotates, the pressing component 2 performs the early pressing of the bearing, and at the same time, the heating component 7 preheats the bearing and the steering gear; during the later stage of pressing, the moving component 4 drives the driving component 5 to move to the second position, so that the transmission component 6 is in the second state. When the driving component 5 rotates, the pressing component 2 performs the later pressing of the bearing, and at the same time, the heating component 7 heats the bearing and the steering gear.

[0033] Working principle: When installing the steering gear bearing, the bearing is first installed on the steering column, and then the steering column is inserted into the steering gear to align the bearing with the bearing installation position of the steering gear. The pressing assembly 2 is pulled, raising its height. The locking assembly 3 is used to lock and limit the pressing assembly 2, preventing it from falling. The steering gear is then installed on the processing frame 1, and the steering column and bearing are moved synchronously, forcing the bearing closer to the bearing installation position of the steering gear, aligning the steering column with the pressing assembly 2. The locking assembly 3 is used to release the pressing assembly 2, allowing it to move to the appropriate position. During the initial pressing stage, the moving assembly 4 is activated, causing it to drive the drive assembly 5 and the transmission assembly 6. Move to the first position, so that the transmission assembly 6 is in the first state. Due to the simplicity of the initial pressing, start the drive assembly 5. The drive assembly 5 drives the transmission assembly 6 to move, and the transmission assembly 6 drives the pressing assembly 2 to move. When the pressing assembly 2 moves to a lower height, the pressing assembly 2 automatically releases, forcing the pressing assembly 2 to press down on the bearing, so that the bearing is pressed into the steering gear. At the same time, the transmission assembly 6 drives the contact assembly 10 to move, and the contact assembly 10 drives the extrusion assembly 8 to move, so that the extrusion assembly 8 causes the hot oil in the heating assembly 7 to be sprayed into the pressing assembly 2, so that the hot oil is released from the pressing assembly 2 onto the bearing and the steering gear, achieving the preheating effect on the bearing and the steering gear, completing the initial pressing operation; in the later pressing, start The movable component 4 moves the drive component 5 and transmission component 6 to the second position, placing the transmission component 6 in the second state. The drive component 5 is then activated, driving the transmission component 6, which in turn drives the pressing component 2. When the pressing component 2 reaches a higher height, it automatically releases, forcing it to exert a greater downward pressure on the bearing until the bearing is fully pressed into the steering gear. Since the later pressing process is relatively difficult, the transmission component 6 simultaneously drives the contact component 10, which in turn drives the extrusion component 8. This causes the extrusion component 8 to spray more hot oil from the heating component 7 into the pressing component 2, resulting in more hot oil being released from the pressing component 2. The heat is released internally onto the bearing and steering gear, achieving a heating effect on the bearing and steering gear. Utilizing the principle of thermal expansion and contraction, assembly resistance is reduced, facilitating subsequent pressing operations on the bearing. In summary, this application's pressing equipment for automotive steering gear bearing installation divides the pressing process into steps. In the initial pressing stage, it achieves a preheating and pressing effect on the bearing and steering gear; in the later pressing stage, it achieves a heating and pressing effect on the bearing and steering gear. Furthermore, it allows for adjustment of the pressing force between the initial and later stages. This results in a smaller pressing force in the initial stage, preventing excessive pressing force that could damage the bearing and steering gear, while a larger pressing force in the later stage reduces the number of pressing operations, thus protecting the bearing and extending its service life.

[0034] Example 2:

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a pressing device for installing automotive steering gear bearings according to the present invention includes a pressing assembly 2 comprising a sliding tube 201 disposed on a processing frame 1, the sliding tube 201 penetrating the processing frame 1, a pressing tube 202 communicating with the sliding tube 201 disposed on the sliding tube 201, and a pressing spring 203 sleeved on the outer ring of the sliding tube 201 disposed between the pressing tube 202 and the processing frame 1.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a pressing device for installing automotive steering gear bearings according to the present invention includes a snap-fit ​​assembly 3 comprising a connecting plate 301 disposed on a sliding tube 201, a guide rod 302 disposed on a processing frame 1 that penetrates the connecting plate 301, and a threaded rod 303 threadedly connected to the connecting plate 301, the threaded rod 303 being threaded through the connecting plate 301.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a pressing device for installing automotive steering gear bearings according to the present invention includes a moving component 4 comprising an electric push rod 401 mounted on a processing frame 1, a mounting frame 402 slidably disposed on the processing frame 1, and a push plate 403 connected to the mounting frame 402 at the output end of the electric push rod 401.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the present invention provides a press-fitting device for installing automotive steering gear bearings. The drive assembly 5 includes a drive motor 501 mounted on a mounting bracket 402. A drive shaft 502 is connected to the mounting bracket 402 by a bearing. The drive shaft 502 is connected to the output shaft of the drive motor 501. A rotating disk 1 503 and a rotating disk 2 504 are fixedly sleeved on the drive shaft 502.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a press-fitting device for installing automotive steering gear bearings according to the present invention includes a transmission assembly 6 comprising a connecting rod 601 disposed on a press-fitting tube 202, a transmission rack 602 disposed on the connecting rod 601, a sector rack 603 meshing with the transmission rack 602 being fixedly sleeved on the outer ring of a rotating disk 503, and a sector rack 604 meshing with the transmission rack 602 being fixedly sleeved on the outer ring of a rotating disk 504, wherein the number of teeth of the sector rack 603 is less than the number of teeth of the sector rack 604.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a press-fitting device for installing automotive steering gear bearings according to the present invention includes a heating assembly 7 comprising a heating cylinder 701 mounted on a processing frame 1, a hot oil inlet pipe 702 connected to a hot oil system on the heating cylinder 701, and a hot oil outlet pipe 703 connected to a sliding pipe 201 on the heating cylinder 701. Both the hot oil inlet pipe 702 and the hot oil outlet pipe 703 are equipped with a one-way valve.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, a pressing device for installing automotive steering gear bearings according to the present invention includes a pressing assembly 8 comprising a support plate 801 disposed on a processing frame 1, a pressing rod 802 disposed on the support plate 801 and a heating cylinder 701, and a pressing piston 803 disposed on the pressing rod 802 adapted to the heating cylinder 701.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a press-fitting device for installing automotive steering gear bearings according to the present invention includes a contact assembly 10 comprising a mounting plate 1001 disposed on a pressing rod 802, a compression spring 1002 sleeved on the outer ring of the pressing rod 802 disposed between the mounting plate 1001 and the support plate 801, and a contact ball 1003 mounted on the mounting plate 1001.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a pressing device for installing automotive steering gear bearings according to the present invention includes a rotating assembly 9 comprising a rotating rod 901 connected to a processing frame 1, a rotating gear 902 fixedly sleeved on the rotating rod 901, which meshes with both a first sector rack 603 and a second sector rack 604, and a cam 903 fixedly sleeved on the rotating rod 901, which is adapted to a contact ball 1003.

[0044] Working principle: When installing the steering gear bearing, the bearing is first installed on the steering column, and then the steering column is inserted into the steering gear to align the bearing with the bearing installation position of the steering gear. Pulling the connecting plate 301 causes the sliding tube 201 to move upward, allowing the sliding tube 201 to slide on the processing frame 1. The sliding tube 201 causes the press-fitting tube 202 to move upward to the appropriate position, compressing the press-fitting spring 203. At this time, rotating the threaded rod 303 causes it to move downward relative to the connecting plate 301 until the end of the threaded rod 303 contacts the processing frame 1, thus achieving the connection of the connecting plate 301, the sliding tube 201, and the press-fitting tube. The locking and limiting effect of 202 prevents the press-fit tube 202 from falling freely. The steering gear is installed at the corresponding position on the processing frame 1, and the steering column and bearing are moved synchronously, forcing the bearing to approach the bearing installation position of the steering gear, so that the steering column is located inside the press-fit tube 202, completing the initial placement of the steering gear, steering column and bearing. The threaded rod 303 is rotated in the opposite direction, so that the threaded rod 303 moves away from the processing frame 1 until the end of the threaded rod 303 approaches the connecting plate 301. Then the connecting plate 301 is released, and the press-fit spring 203 needs to return to its original state. The press-fit spring 203 is stretched, so that the sliding tube 201 and the press-fit tube 202 return to their original positions.

[0045] During the initial pressing stage, the electric push rod 401 is activated. The output end of the electric push rod 401 drives the push plate 403 to move. The push plate 403 drives the mounting bracket 402 to move to the first position. The mounting bracket 402 drives the drive motor 501, drive shaft 502, rotating disk one 503, rotating disk two 504, sector rack one 603, and sector rack two 604 to move synchronously to the first position until sector rack one 603 and transmission spur rack 602 are in the same plane. Since the initial pressing stage is simple, the drive motor 501 is activated. The output shaft of the drive motor 501 rotates, causing rotating disk one 503 and sector rack one 603 to rotate. The rotation of sector rack one 603 drives transmission spur rack 602 to rotate. When rack 602 moves, the transmission rack 602 drives the connecting rod 601 to move upward. The connecting rod 601 drives the press-fit tube 202 to move upward. The press-fit tube 202 drives the sliding tube 201 to move upward to a certain lower height. The press-fit spring 203 is compressed. When the sector rack 603 separates from the transmission rack 602, the press-fit spring 203 causes the press-fit tube 202 to generate an impact force. Since the steering column is located inside the press-fit tube 202, the press-fit tube 202 presses down on the bearing, causing the bearing to be pressed down into the steering gear. When the sector rack 603 rotates to the rotating gear 902, the sector rack 603 drives the rotating gear 902 to rotate. The rotating rod 901 rotates, which in turn rotates the cam 903. When the cam 903 contacts the contact ball 1003, it forces the contact ball 1003 to move upward. The contact ball 1003 then moves the mounting plate 1001 and the pressing rod 802 upward. At this time, the pressing spring 1002 is compressed, and the pressing rod 802 drives the pressing piston 803 to move within the heating oil cylinder 701, forcing the pressing piston 803 to press the hot oil within the heating oil cylinder 701. The hot oil is then transported to the sliding tube 201 and the press-fitting tube 202 through the hot oil output pipe 703. The hot oil is then sprayed onto the bearings and steering gear through the press-fitting tube 202, achieving a preheating effect on the bearings and steering gear. With fewer teeth on the fan-shaped rack 603, the chance of contact between the cam 903 and the contact ball 1003 is reduced, resulting in less hot oil being continuously output from the hot oil output pipe 703. When the intermittent hot oil is sprayed onto the bearing and steering gear, it has a preheating effect. When the cam 903 separates from the contact ball 1003, under the action of the compression spring 1002, the compression rod 802 drives the compression piston 803 to retract, thereby allowing the hot oil to enter the heating oil cylinder 701 through the hot oil input pipe 702. According to the above steps, when the drive motor 501 continues to rotate, the pressing pipe 202 will continuously press down on the bearing, while preheating the bearing and steering gear, completing the initial pressing operation.

[0046] During the later pressing process, the electric push rod 401 is activated. The output end of the electric push rod 401 drives the push plate 403 to move. The push plate 403 drives the mounting bracket 402 to move to the second position. The mounting bracket 402 drives the drive motor 501, drive shaft 502, rotating disk one 503, rotating disk two 504, sector rack one 603, and sector rack two 604 to move synchronously to the second position until sector rack two 604 and transmission spur rack 602 are in the same plane. Due to the difficulty of the later pressing process, the drive motor 501 is activated. The output shaft of the drive motor 501 rotates, causing rotating disk two 504 and sector rack two 604 to rotate. The rotation of sector rack two 604 drives... The transmission rack 602 moves, which drives the connecting rod 601 to move upward. The connecting rod 601 drives the press-fit tube 202 to move upward. The press-fit tube 202 drives the sliding tube 201 to move upward to a certain higher height. Since the number of teeth of the second sector rack 604 is greater than the number of teeth of the first sector rack 603, the press-fit tube 202 reaches a higher height. The press-fit spring 203 is compressed, and the elastic potential energy is greater. When the second sector rack 604 separates from the transmission rack 602, the press-fit spring 203 causes the press-fit tube 202 to generate a greater impact force. The press-fit tube 202 exerts a greater downward pressure on the bearing, causing the bearing to be pressed down into the steering gear.When the second sector rack 604 rotates to the position of the rotating gear 902, the second sector rack 604 drives the rotating gear 902 to rotate. The rotation of the rotating gear 902 drives the rotating rod 901 to rotate. The rotating rod 901 drives the cam 903 to rotate. When the cam 903 abuts against the contact ball 1003, it forces the contact ball 1003 to move upward. The contact ball 1003 drives the mounting plate 1001 and the pressing rod 802 to move upward. At this time, the pressing spring 1002 is compressed, and the pressing rod 802... The moving extrusion piston 803 moves within the heating oil cylinder 701, forcing it to extrude hot oil. This hot oil is then transported through the hot oil output pipe 703 to the sliding pipe 201 and the press-fit pipe 202. The hot oil is then sprayed out through the press-fit pipe 202 onto the bearings and steering gear. Because the rotating gear 902 rotates more frequently, the cam 903 has a greater chance of contacting the contact ball 1003, allowing the hot oil output pipe 703 to continuously deliver more hot oil. When the oil accumulates and acts on the bearing and steering gear, it creates a heating effect on the bearing and steering gear. When the cam 903 separates from the contact ball 1003, under the action of the compression spring 1002, the compression rod 802 drives the compression piston 803 to retract, thereby allowing hot oil to enter the heating oil cylinder 701 through the hot oil input pipe 702, effectively replenishing the hot oil. Utilizing the principle of thermal expansion and contraction, the assembly resistance is reduced, facilitating the subsequent pressing operation of the bearing. The hot oil also has a lubricating effect; when the hot oil is sprayed out, it forms an oil mist, which facilitates the pressing of the bearing into the steering gear. Generally, the steering gear housing is made of aluminum alloy, while the bearing is made of steel, resulting in a greater expansion rate of the steering gear than the bearing. Therefore, the bearing is easier to install at the bearing mounting position on the steering gear. According to the above steps, when the drive motor 501 continues to rotate, the pressing pipe 202 continuously presses down on the bearing, while simultaneously heating the bearing and steering gear, completing the subsequent pressing operation.

[0047] This solution divides the pressing process into steps. On the one hand, the initial pressing stage can achieve the effect of preheating and pressing the bearings and steering gear, while the later pressing stage can achieve the effect of heating and pressing the bearings and steering gear. On the other hand, it can adjust the pressing force between the initial and later stages, so that the initial pressing force is small to avoid damage to the bearings and steering gear due to excessive initial pressing force, and the later pressing force is large to reduce the number of pressing cycles, which helps protect the bearings and improve their service life.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A press-fitting device for installing automotive steering gear bearings, characterized in that, The system includes a processing frame (1), on which a press-fit assembly (2) for pressing down the bearing is provided. A snap-fit ​​assembly (3) is provided between the processing frame (1) and the press-fit assembly (2). A moving assembly (4) is provided on the processing frame (1), and a driving assembly (5) is provided on the moving assembly (4). A transmission assembly (6) is provided between the driving assembly (5) and the press-fit assembly (2). A heating assembly (7) connected to a hot oil system is provided on the processing frame (1). An extrusion assembly (8) connected to the heating assembly (7) is provided on the processing frame (1). A rotating assembly (9) adapted to the transmission assembly (6) is provided on the processing frame (1). The rotating assembly (9) is connected to the press-fit assembly (2). A contact component (10) is provided between the pressing components (8); wherein, during the early stage pressing process, the moving component (4) drives the driving component (5) to move to the first position, so that the transmission component (6) is in the first state. When the driving component (5) rotates, the pressing component (2) performs early pressing on the bearing, and at the same time, the heating component (7) preheats the bearing and the steering gear; during the later stage pressing process, the moving component (4) drives the driving component (5) to move to the second position, so that the transmission component (6) is in the second state. When the driving component (5) rotates, the pressing component (2) performs late pressing on the bearing, and at the same time, the heating component (7) heats the bearing and the steering gear.

2. The press-fitting equipment for installing automotive steering gear bearings according to claim 1, characterized in that, The press assembly (2) includes a sliding tube (201) disposed on the processing frame (1), the sliding tube (201) passing through the processing frame (1), a press tube (202) communicating with the sliding tube (201) is disposed on the sliding tube (201), and a press spring (203) sleeved on the outer ring of the sliding tube (201) is disposed between the press tube (202) and the processing frame (1).

3. The press-fitting equipment for installing automotive steering gear bearings according to claim 2, characterized in that, The snap-fit ​​assembly (3) includes a connecting plate (301) disposed on the sliding tube (201), and a guide rod (302) that penetrates the connecting plate (301) is disposed on the processing frame (1). A threaded rod (303) is threadedly connected to the connecting plate (301), and the threaded rod (303) is threadedly penetrates the connecting plate (301).

4. The press-fitting equipment for installing automotive steering gear bearings according to claim 3, characterized in that, The moving component (4) includes an electric push rod (401) mounted on the processing frame (1), a mounting frame (402) is slidably disposed on the processing frame (1), and a push plate (403) connected to the mounting frame (402) is disposed at the output end of the electric push rod (401).

5. The press-fitting equipment for installing automotive steering gear bearings according to claim 4, characterized in that, The drive assembly (5) includes a drive motor (501) mounted on the mounting bracket (402), a drive shaft (502) is connected to the mounting bracket (402) by a bearing, the drive shaft (502) is connected to the output shaft of the drive motor (501), and a rotating disk one (503) and a rotating disk two (504) are fixedly sleeved on the drive shaft (502).

6. The press-fitting equipment for installing automotive steering gear bearings according to claim 5, characterized in that, The transmission assembly (6) includes a connecting rod (601) disposed on the press-fitting tube (202), a transmission rack (602) disposed on the connecting rod (601), a sector rack (603) meshing with the transmission rack (602) is fixedly sleeved on the outer ring of the first rotating disk (503), and a sector rack (604) meshing with the transmission rack (602) is fixedly sleeved on the outer ring of the second rotating disk (504), and the number of teeth of the first sector rack (603) is less than the number of teeth of the second sector rack (604).

7. The press-fitting equipment for installing automotive steering gear bearings according to claim 6, characterized in that, The heating assembly (7) includes a heating cylinder (701) mounted on the processing frame (1). The heating cylinder (701) is provided with a hot oil inlet pipe (702) connected to the hot oil system. The heating cylinder (701) is provided with a hot oil outlet pipe (703) connected to the sliding pipe (201). Both the hot oil inlet pipe (702) and the hot oil outlet pipe (703) are equipped with one-way valves.

8. The press-fitting equipment for installing automotive steering gear bearings according to claim 7, characterized in that, The extrusion assembly (8) includes a support plate (801) disposed on the processing frame (1), an extrusion rod (802) is disposed on the support plate (801) and the heating oil cylinder (701), and an extrusion piston (803) adapted to the heating oil cylinder (701) is disposed on the extrusion rod (802).

9. The press-fitting equipment for installing automotive steering gear bearings according to claim 8, characterized in that, The contact assembly (10) includes a mounting plate (1001) disposed on the extrusion rod (802), a compression spring (1002) sleeved on the outer ring of the extrusion rod (802) is disposed between the mounting plate (1001) and the support plate (801), and a contact ball (1003) is mounted on the mounting plate (1001).

10. A press-fitting device for installing automotive steering gear bearings according to claim 9, characterized in that, The rotating assembly (9) includes a rotating rod (901) connected to the processing frame (1) by a bearing. A rotating gear (902) that meshes with both the first sector rack (603) and the second sector rack (604) is fixedly sleeved on the rotating rod (901). A cam (903) that is adapted to the contact ball (1003) is fixedly sleeved on the rotating rod (901).

Images