Mounting mechanism of plate spring rubber bearing

Abstract

The utility model discloses a mounting mechanism of a plate spring rubber bearing, and aims to solve the problems that the conventional rubber bearing is difficult to be vertically mounted manually, and unrecoverable consequences such as fracture of a plate spring or a guide arm, deformation of a frame and the like can be caused even if the rubber bearing is mounted and used. The mounting mechanism comprises a base box, a base is mounted above the base box, a fixing cylinder is fixedly connected to the lower surface of the base, a guide pin is slidably connected to the interior of the fixing cylinder, and an upper positioning column is fixedly connected to the top end of the guide pin and located outside the base. The rubber bearing is installed on the lower positioning column and located over the workpiece, then the rubber bearing is pressed by 5-6 mm, rubber can flow in the pressing-in direction, upward flowing and downward flowing are balanced, then the workpiece is overturned to the other face to be pressed in reversely, at the moment, axial anisotropy is completely counteracted, and the rubber bearing is pressed in the pressing-in direction by 5-6 mm. The effect is better after installation and use, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber bearing installation, and particularly relates to an installation mechanism for a leaf spring rubber bearing. Background Technique

[0002] A rubber bearing (also called a rubber ball joint or a rubber bushing) is a sliding bearing, and its flexible part is made of rubber. Due to different requirements for axial force, radial force, torsional force, etc., some rubbers need to be vulcanized and bonded to the outer tube and the inner tube, while some do not. However, in the installation of rubber bearings, the same rule is followed. For example, in ordinary installation, since rubber is a flowing part, it will flow in the opposite direction as the installation force increases, resulting in uneven forces at each point of the rubber, which is also called the anisotropy of rubber. After the installation is completed, the rubber will maintain the characteristics of anisotropy and maintain the recovery and release of anisotropic stress, causing phenomena such as offset after the rubber bearing is installed. Moreover, the offset amount is large or small and the directions are different and inconsistent, resulting in installation failure.

[0003] Such as Figure 1 shown, at the beginning of the press-in, the press-in force is P0. As the press-in force P0 gradually increases, the elastic force and surface tension of the rubber also gradually increase. The rubber is like "chewing gum" and will flow to where the space is large and the resistance is small. This makes more and more rubber flow upward in the figure. When the press-in force P0 instantaneously increases, the rubber expands the outer tube and forms an accumulation, resulting in an instantaneous increase in the press-in force of the press sleeve. At this time, it is a risk period. If the expansion is too much, the end of the outer tube of the rubber bearing will be directly flattened after being pressed down, as Figure 2 shown, the press-in force P0 gradually decreases. When the expansion is not too much after being pressed down, the data size at this time is good. However, after the anisotropy of the rubber stabilizes, the inner tube will shift downward or twist.

[0004] The above rubber bearing is based on the good skills of the operator. If the rubber bearing does not enter the installation hole very vertically at the beginning, the situation will be even more unimaginable later. Therefore, such a press-in rubber bearing has defects and risks. Once it enters the main engine factory, it is very difficult to install the leaf spring or the guide arm into the corresponding hanger seat. Even if it is installed, the entire leaf spring or guide arm will be twisted in the vehicle frame, and the rubber will break after a period of use. Even worse, it will cause irreparable consequences such as the breakage of the leaf spring or guide arm and the deformation of the vehicle frame. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an installation mechanism for a leaf spring rubber bearing, which aims to solve the problem that it is very difficult to install the existing rubber bearing vertically by manual labor, and even if it is installed and used, it will cause irreparable consequences such as the breakage of the leaf spring or guide arm and the deformation of the vehicle frame.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the present utility model provides an installation mechanism for a leaf spring rubber bearing. The installation mechanism includes a base box, a base is installed above the base box, a fixed cylinder is fixedly connected to the lower surface of the base, a guiding pin is slidably connected inside the fixed cylinder, the top end of the guiding pin is fixedly connected to an upper positioning column and is located outside the base, a spring is arranged between the bottom end of the guiding pin and the fixed cylinder, a support column is arranged at the rear side of the upper surface of the base box, a fixing plate is fixedly connected to the top end of the support column, a first electric push rod is installed on the front surface of the fixing plate, the telescopic end of the first electric push rod is fixedly connected to a pressing head, a lower positioning column is fixedly connected to the lower surface of the pressing head, and the upper positioning column and the lower positioning column are coaxially arranged.

[0009] Preferably, a positioning plate is fixedly connected to the left side of the base by a first screw, an installation panel is fixedly connected to the upper surface of the base by a second screw, and the installation panel is sleeved on the outer surface of the guiding pin.

[0010] Further, a fixing ring is fixedly connected to the inner top wall of the fixed cylinder, and a limiting ring corresponding to the fixing ring is fixedly connected to the lower surface of the guiding pin.

[0011] Furthermore, a cover plate is fixedly connected to the lower surface of the fixed cylinder by a third screw, and the bottom end of the spring contacts the cover plate.

[0012] Furthermore, the bottom end of the support column is located inside the base box and is fixedly connected to a worm gear, the support column is rotationally connected to the base box through a bearing, a motor is fixedly connected to the inner wall of the base box, an output end of the motor is fixedly connected to a worm, and the worm is meshed with the worm gear.

[0013] Furthermore, the base box and the base are fixedly connected by two support plates.

[0014] Furthermore, a first through hole is opened on the lower surface of the guiding pin and penetrates through the upper positioning column, a second through hole corresponding to the first through hole is opened on the cover plate, a limiting rod is slidably arranged inside the second through hole, the top end of the limiting rod penetrates through the spring and the second through hole and is fixedly connected to a limiting block, a second electric push rod is fixedly connected to the inside of the base box, and the bottom end of the limiting rod is located inside the base box and is fixedly connected to the telescopic end of the second electric push rod.

[0015] Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In this utility model, a rubber bearing is installed on the pressure head and the lower positioning post. Then, the workpiece is placed on the base, and the mounting hole is sleeved on the alignment pin. Since the upper positioning post and the lower positioning post are coaxially arranged, at this time, the rubber bearing and the mounting hole of the workpiece will also be concentric and perpendicular above. Then, the rubber bearing will be pressed into the mounting hole of the workpiece until it is pressed 5-6 mm beyond the head. In this way, the rubber will flow in the pressing direction, achieving a balance between upward and downward flow. At this time, the anisotropy is balanced. Then, the workpiece is flipped to the other side and pressed in the reverse direction. At this time, all the anisotropy in the axial direction is offset, and the effect is better after installation, which will not cause problems such as the breakage of leaf springs or guide arms and the deformation of the vehicle frame, and improves the service life.

[0018] In this utility model, by setting the limiting rod, the limiting block and the second electric push rod, during the process that the rubber bearing is pressed into the mounting hole of the workpiece and is pressed 5-6 mm beyond the head, the second electric push rod drives the limiting rod and the limiting block to move downward synchronously, which will not affect the pressing of the rubber bearing. After the front side of the rubber bearing is pressed in, the second electric push rod will not automatically extend due to the restoring force of the spring. Just flip the workpiece to the other side and place it in the original position. At this time, the lower positioning post will also be located inside the rubber bearing, so that the reverse pressing of the rubber bearing is more stable. At the same time, there is no need to rotate the position of the pressure head, improving the installation speed. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the existing manual installation of a rubber bearing.

[0020] Figure 2 is a schematic structural diagram of the existing manual installation of a rubber bearing.

[0021] Figure 3 is a schematic three-dimensional structural diagram of this utility model.

[0022] Figure 4 is a schematic structural diagram of the rubber bearing of this utility model being pressed in.

[0023] Figure 5 is a schematic structural diagram of the rubber bearing of this utility model being pressed beyond the head.

[0024] Figure 6 is a schematic structural diagram of the support column and the base box of this utility model being rotatably connected.

[0025] Figure 7 is a schematic structural diagram of the limiting rod installed inside the alignment pin of this utility model.

[0026] Figure 8 is a schematic structural diagram of the interior of the fixed cylinder of this utility model.

[0027] The reference numerals in the drawings are: 1, base box; 2, base; 3, fixed cylinder; 4, alignment pin; 5, upper positioning post; 6, spring; 7, support post; 8, fixed plate; 9, first electric push rod; 10, pressing head; 11, lower positioning post; 12, support plate; 101, first screw; 102, positioning plate; 103, second screw; 104, mounting panel; 301, fixing ring; 302, limiting ring; 303, third screw; 304, cover plate; 701, worm gear; 702, motor; 703, worm; 13, first through hole; 14, second through hole; 15, limiting rod; 16, limiting block; 17, electric push rod. Detailed implementation manners

[0028] This detailed implementation manner is an installation mechanism for a leaf spring rubber bearing, and its structural schematic diagram is as Figures 3 - 8 shown. The installation mechanism includes a base box 1. A base 2 is installed above the base box 1. A fixed cylinder 3 is fixedly connected to the lower surface of the base 2. An alignment pin 4 is slidably connected inside the fixed cylinder 3. The top end of the alignment pin 4 is fixedly connected to an upper positioning post 5 and is located outside the base 2. A spring 6 is arranged between the bottom end of the alignment pin 4 and the fixed cylinder 3. A support post 7 is arranged at the rear side of the upper surface of the base box 1. The top end of the support post 7 is fixedly connected to a fixed plate 8. A first electric push rod 9 is installed on the front surface of the fixed plate 8. The telescopic end of the first electric push rod 9 is fixedly connected to a pressing head 10. The lower surface of the pressing head 10 is fixedly connected to a lower positioning post 11. The upper positioning post 5 and the lower positioning post 11 are coaxially arranged.

[0029] As Figure 3 and Figure 4 shown: In this embodiment, a positioning plate 102 is fixedly connected to the left side of the base 2 through a first screw 101, and a mounting panel 104 is fixedly connected to the upper surface of the base 2 through a second screw 103. The mounting panel 104 is sleeved on the outer surface of the alignment pin 4.

[0030] Setting the positioning plate 102 and the mounting panel 104 like this can replace different thicknesses to support the workpiece and keep it in a horizontal state.

[0031] As Figure 4 and Figure 8 shown: In this embodiment, a fixing ring 301 is fixedly connected to the inner top wall of the fixed cylinder 3, and a limiting ring 302 corresponding to the fixing ring 301 is fixedly connected to the lower surface of the alignment pin 4.

[0032] Setting the alignment pin 4 like this can slide up and down inside the fixed cylinder 3 and is limited by the fixing ring 301 and the limiting ring 302, and the phenomenon of detachment will not occur.

[0033] As Figure 4 and Figure 8As shown: In this embodiment, the lower surface of the fixed cylinder 3 is fixedly connected with a cover plate 304 through a third screw 303, and the bottom end of the spring 6 contacts the cover plate 304. Such a setting enables the alignment pin 4 to be installed from the bottom of the fixed cylinder 3, which is very convenient.

[0034] As Figure 5 and Figure 6 As shown: In this embodiment, the bottom end of the support column 7 is located inside the base box 1 and is fixedly connected with a worm gear 701. The support column 7 is rotatably connected with the base box 1 through a bearing. The inner wall of the base box 1 is fixedly connected with a motor 702, and the output end of the motor 702 is fixedly connected with a worm 703. The worm 703 is meshed with the worm gear 701.

[0035] Such a setting enables the starting of the motor 702 to drive the worm 703 to rotate. During the rotation of the worm 703, it can cooperate with the worm gear 701 to drive the support column 7, the fixed plate 8, the first electric push rod 9, the pressing head 10 and the lower positioning column 11 to rotate above the workpiece, which is convenient for completing the reverse pressing of the rubber bearing.

[0036] Working principle: According to the anisotropic characteristics of rubber, since the axial force mainly plays a key role in the rubber bearing, we install the rubber bearing on the pressing head 10 and the lower positioning column 11. The rubber bearing is sleeved on the lower positioning column 11 and fixed. Then, the workpiece is placed on the base 2, and the mounting hole is sleeved on the alignment pin 4. Since the upper positioning column 5 and the lower positioning column 11 are coaxially arranged, at this time, the rubber bearing and the mounting hole of the workpiece will also be concentric and perpendicular above. Then, start the first electric push rod 9 to extend, driving the pressing head 10, the lower positioning column 11 and the rubber bearing to move downward. At this time, the rubber bearing will be pressed into the mounting hole of the workpiece until the rubber bearing is pressed 5 - 6 mm beyond the head 5. In this way, the rubber will flow in the pressing direction, achieving a balance between upward and downward flow. At this time, the anisotropy is balanced. Then, turn the workpiece to the other side and place it on the base 2. Then, start the motor 702 to drive the worm 703 to rotate. During the rotation of the worm 703, it can cooperate with the worm gear 701 to drive the support column 7, the fixed plate 8, the first electric push rod 9, the pressing head 10 and the lower positioning column 11 to rotate above the workpiece. Then, start the first electric push rod 9 to extend again, driving the pressing head 10, the lower positioning column 11 and the rubber bearing to move downward. At this time, the rubber bearing will be pressed into the mounting hole of the workpiece, thus completing the reverse pressing of the rubber bearing. At this time, all the axial anisotropy is offset, and the effect is better after installation and use, improving the service life.

[0037] As Figure 3 and Figure 4 As shown: In this embodiment, the base box 1 and the base 2 are fixedly connected through two support plates 12. Such a setting enables the base box 1 and the base 2 to be stably connected together, better for installing the rubber bearing.

[0038] As Figure 7 and Figure 8 shown: In this embodiment, a first through hole 13 is formed in the lower surface of the alignment pin 4 and penetrates the upper positioning post 5. A second through hole 14 corresponding to the first through hole 13 is formed in the cover plate 304. A limiting rod 15 is slidably arranged inside the second through hole 14. The top end of the limiting rod 15 penetrates the spring 6 and the second through hole 14 and is fixedly connected to a limiting block 16. A second electric push rod 17 is fixedly connected inside the base box 1. The bottom end of the limiting rod 15 is located inside the base box 1 and is fixedly connected to the telescopic end of the second electric push rod 17.

[0039] With such a setting, when the support column 7 is fixedly connected to the base box 1 and the rubber bearing is pressed into the mounting hole of the workpiece and over-pressed by 5-6 mm, the second electric push rod 17 drives the limiting rod 15 and the limiting block 16 to move downward synchronously, which will not affect the pressing-in of the rubber bearing. After the rubber bearing is pressed in from the front, the second electric push rod 17 will not automatically extend due to the restoring force of the spring 6. Only need to turn the workpiece to the other side and place it in the original position. At this time, the lower positioning post 11 will also be located inside the rubber bearing, so that the reverse pressing-in of the rubber bearing is more stable, and at the same time, the position of the pressing head 10 does not need to be rotated.

[0040] All technical features in this embodiment can be freely combined according to actual needs. The above embodiment is a preferred implementation scheme of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A mounting mechanism for a leaf spring rubber bearing, the mounting mechanism comprising a base box (1), characterized in that: A base (2) is installed above the base box (1), and a fixed cylinder (3) is fixedly connected to the lower surface of the base (2), and a guide pin (4) is slidably connected inside the fixed cylinder (3). The top end of the guide pin (4) is fixedly connected to an upper positioning column (5) and is located outside the base (2). A spring (6) is arranged between the bottom end of the guide pin (4) and the fixed cylinder (3). A support column (7) is arranged on the rear side of the upper surface of the base box (1), and the top end of the support column (7) is fixedly connected to a fixed plate (8). A first electric push rod (9) is installed on the front side of the fixed plate (8), and the telescopic end of the first electric push rod (9) is fixedly connected to a pressure head (10), and the lower surface of the pressure head (10) is fixedly connected to a lower positioning column (11), and the upper positioning column (5) and the lower positioning column (11) are arranged coaxially.

2. The installation mechanism of the leaf spring rubber bearing according to claim 1, characterized in that: The left side of the base (2) is fixedly connected to a positioning plate (102) via a first screw (101), and the upper surface of the base (2) is fixedly connected to a mounting panel (104) via a second screw (103), and the mounting panel (104) is sleeved on the outer surface of the guide pin (4).

3. The installation mechanism of the leaf spring rubber bearing according to claim 2, characterized in that: A fixing ring (301) is fixedly connected to the inner top wall of the fixing cylinder (3), and a limiting ring (302) corresponding to the fixing ring (301) is fixedly connected to the lower surface of the guide pin (4).

4. The installation mechanism of the leaf spring rubber bearing according to claim 3, characterized in that: The lower surface of the fixing cylinder (3) is fixedly connected to a cover plate (304) via a third screw (303), and the bottom end of the spring (6) is in contact with the cover plate (304).

5. The installation mechanism of the leaf spring rubber bearing according to claim 4, characterized in that: The bottom end of the support column (7) is located inside the base box (1) and is fixedly connected to a worm gear (701); the support column (7) is rotatably connected to the base box (1) via a bearing; a motor (702) is fixedly connected to the inner wall of the base box (1); a worm (703) is fixedly connected to the output end of the motor (702); and the worm (703) is meshingly connected to the worm gear (701).

6. The installation mechanism of the leaf spring rubber bearing according to claim 1, characterized in that: The base box (1) and the base (2) are fixedly connected via two support plates (12).

7. The installation mechanism of the leaf spring rubber bearing according to claim 4, characterized in that: A first through hole (13) is provided on the lower surface of the guide pin (4) and passes through the upper positioning column (5); a second through hole (14) corresponding to the first through hole (13) is provided on the cover plate (304); a limit rod (15) is slidably arranged inside the second through hole (14); the top end of the limit rod (15) passes through the spring (6) and the second through hole (14) and is fixedly connected to the limit block (16); a second electric push rod (17) is fixedly connected inside the base box (1); the bottom end of the limit rod (15) is located inside the base box (1) and is fixedly connected to the telescopic end of the second electric push rod (17).

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