Tool for pressing bush on connecting rod

Abstract

The tool comprises a working table, a fixing frame is fixedly connected to the working table, a pressing column is connected to the bottom of the fixing frame in a lifting mode, a supporting base and a supporting sleeve are fixedly connected to the top of the working table, an opening is formed in the top end of the supporting sleeve, and a sliding groove is formed in the inner side of the opening. A small limiting sleeve rod is inserted into the opening, a sliding block is fixedly connected to the outer wall of the small limiting sleeve rod, a supporting spring is fixedly connected to the bottom of the small limiting sleeve rod, one end of the supporting spring is fixedly connected with the inner wall of the supporting sleeve, a large limiting sleeve rod is fixedly connected to the top of the supporting base, and the small limiting sleeve rod is slidably connected into the supporting sleeve. And a supporting frame is arranged at the top of the workbench, a pressing block is rotationally connected to the inner side of the supporting frame, and the pressing block is located between the small limiting sleeve rod and the large limiting sleeve rod. The device can realize automatic assembly of the bushing and the connecting rod, so that the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bushing assembly, in particular to a tooling for pressing a bushing of a connecting rod. Background Art

[0002] The connecting rod connects the piston and the crankshaft, and transmits the force acting on the piston to the crankshaft, converting the reciprocating motion of the piston into the rotational motion of the crankshaft; the bushing is a matching part used outside the mechanical parts to achieve the functions of sealing and wear protection, and refers to a ring sleeve that acts as a gasket.

[0003] At present, when installing the bushing at the small end of the connecting rod, workers usually use tools to hit the bushing into the through hole of the connecting rod. This assembly method is not only inefficient, but also easy to damage the bushing, so it needs to be improved. Utility Model Content

[0004] The utility model aims to provide a tool for pressing a connecting rod bushing, so as to solve the problem that manual striking to install the bushing easily causes damage to the bushing and reduces the assembly efficiency, as proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tooling for connecting rod pressing bushing, comprising a workbench, a fixed frame is fixedly connected to the workbench, a pressing column is lifted and lowered at the bottom of the fixed frame, a support seat and a support sleeve are fixedly connected to the top of the workbench, a large limit sleeve is fixedly connected to the top of the support seat, a small limit sleeve is slidably connected inside the support sleeve, the small limit sleeve is located at the bottom of the pressing column, a support frame is arranged on the top of the workbench, a pressing block is rotatably connected to the inner side of the support frame, and the pressing block is located between the small limit sleeve and the large limit sleeve.

[0006] Preferably, an opening is provided at the top of the support sleeve, a sliding groove is provided on the inner side of the opening, a small limit sleeve is inserted into the opening, a support spring is fixedly connected to the bottom of the small limit sleeve, and one end of the support spring is fixedly connected to the inner wall of the support sleeve.

[0007] Preferably, a slider is fixedly connected to the outer wall of the small limit sleeve rod, and the sliders are distributed in a circular shape with equal intervals about the outer wall of the small limit sleeve rod.

[0008] Preferably, one side of the sliding block is inserted into a sliding groove on the inner wall of the opening of the supporting sleeve, and the sliding block and the supporting sleeve form a sliding connection.

[0009] Preferably, a driving motor is fixedly connected to one side of the support frame, and one side of the driving motor shaft is connected to a shaft rod on one side of the pressing block.

[0010] Preferably, the diameter of the small limiting sleeve rod is smaller than the diameter of the large limiting sleeve rod, and the diameter of the large limiting sleeve rod is smaller than the diameter of the support seat.

[0011] Preferably, a downward-pressing hydraulic cylinder is fixedly connected to the top of the fixing frame, and one end of the downward-pressing hydraulic cylinder is connected to the top of the pressure column.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The device can realize automatic assembly of the bushing and the connecting rod, thereby improving the assembly efficiency.

[0014] (2) The device is provided with an automatically lifting pressure column, and a support seat, a large limit sleeve, a support sleeve and a small limit sleeve are provided on the top of the workbench to fix the two ends of the connecting rod. The pressure column corresponds to the small limit sleeve. By setting the bushing on the outer wall of the small limit sleeve and then applying pressure through the pressure column, the bushing and the small end of the connecting rod can be quickly connected, thereby improving the assembly efficiency.

[0015] (3) By arranging a retractable small limit sleeve rod on the support sleeve, the device can make the small limit sleeve rod descend synchronously with the bushing during the assembly process of the bushing, thereby supporting the inner wall of the bushing to prevent deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a tooling structure of a connecting rod pressing bushing of the utility model;

[0017] Figure 2 The utility model is a tooling for connecting rod pressing bushing Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 It is a top view of a workbench of a tooling for pressing a connecting rod bushing according to the utility model;

[0019] Figure 4 The utility model is a cross-sectional view of the connection between a supporting sleeve and a small limit sleeve rod of a tooling for a connecting rod pressing bushing.

[0020] In the figure: 1. downward pressure hydraulic cylinder; 2. fixed frame; 3. pressure column; 4. small limit sleeve; 5. support sleeve; 6. workbench; 7. pressure block; 8. large limit sleeve; 9. support frame; 10. support seat; 11. drive motor; 12. slider; 13. support spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a tooling for pressing a connecting rod bushing, comprising a workbench 6, a fixed frame 2 is fixedly connected to the workbench 6, a downward pressing hydraulic cylinder 1 is fixedly connected to the top of the fixed frame 2, and one end of the downward pressing hydraulic cylinder 1 is connected to the top of a pressing column 3; this structure can enable the pressing column 3 to automatically pressurize the small limit sleeve rod 4 and the bushing sleeved on the outer wall of the small limit sleeve rod 4 through the downward pressing hydraulic cylinder 1; the bottom of the fixed frame 2 is lifted and connected with the pressing column 3, the top of the workbench 6 is fixedly connected with a support seat 10 and a support sleeve 5, the top of the support sleeve 5 is provided with an opening, the inner side of the opening is provided with a slide groove, the inside of the opening is provided with a small limit sleeve rod 4, and the bottom of the small limit sleeve rod 4 The top of the support seat 10 is fixedly connected with a support spring 13, and one end of the support spring 13 is fixedly connected to the inner wall of the support sleeve 5; this structure can support the small limit sleeve rod 4 to automatically reset after the pressure on the small limit sleeve rod 4 is reduced by setting the support spring 13; a large limit sleeve rod 8 is fixedly connected to the top of the support seat 10, and a small limit sleeve rod 4 is slidably connected inside the support sleeve 5, and a slider 12 is fixedly connected to the outer wall of the small limit sleeve rod 4, and the sliders 12 are distributed in a circular ring with equal spacing about the outer wall of the small limit sleeve rod 4; one side of the slider 12 is inserted into the slide groove on the inner wall of the opening of the support sleeve 5, and the slider 12 is slidably connected to the support sleeve 5; this structure is provided by setting the slider 12 and the slider The groove can improve the stability of the small limit sleeve rod 4 during the lifting process; the diameter of the small limit sleeve rod 4 is smaller than the diameter of the large limit sleeve rod 8, and the diameter of the large limit sleeve rod 8 is smaller than the diameter of the support seat 10; this structure facilitates the positioning of the connecting rod. When fixing the connecting rod, the large through-hole end of the connecting rod is sleeved on the outer wall of the large limit sleeve rod 8, and the support seat 10 can support the connecting rod. The small through-hole end of the connecting rod is sleeved on the outer wall of the small limit sleeve rod 4, and a gap is left between the connecting rod and the small limit sleeve rod 4 for the entry of the bushing, and the support sleeve 5 can support the connecting rod; the small limit sleeve rod 4 is located at the bottom of the pressure column 3, and a support frame 9 is provided on the top of the workbench 6, and a drive The driving motor 11 is driven, and one side of the shaft of the driving motor 11 is connected to the shaft rod on one side of the pressure block 7; this structure can drive the pressure block 7 to rotate automatically through the driving motor 11, and the pressure block 7 can press the connecting rod after rotating, so that the connecting rod is stably fixed on the support seat 10 and the support sleeve 5; the inner side of the support frame 9 is rotatably connected with the pressure block 7, and the pressure block 7 is located between the small limit sleeve rod 4 and the large limit sleeve rod 8; this device is provided with a small limit sleeve rod 4 that can be raised and lowered, so that the small limit sleeve rod 4 can be lowered synchronously when the pressure column 3 presses the bushing, which not only does not affect the installation of the bushing but also can support the inner wall of the bushing, reducing the chance of damage to the bushing.

[0023] Working principle: When using the tooling for pressing the connecting rod bushing, first, the two ends of the connecting rod are respectively sleeved on the outer walls of the large limit sleeve rod 8 and the small limit sleeve rod 4, and then the driving motor 11 is driven. The driving motor 11 drives the pressure block 7 to rotate, so that the pressure block 7 approaches the connecting rod and presses the connecting rod to fix it, and then the bushing is sleeved on the outer wall of the small limit sleeve rod 4, and then the downward hydraulic cylinder 1 is started to push the pressure column 3 to move downward. During the descent, the pressure column 3 pushes the small limit sleeve rod 4 and the bushing to move downward, so that the bushing slowly enters the inside of the connecting rod. At the same time, the small limit sleeve rod 4 slides and retracts into the inside of the support sleeve 5 through the slider 12. At this time, the support spring 13 is in a compressed state. When the bushing and the connecting rod are assembled, the pressure column 3 is reset, and the small limit sleeve rod 4 is automatically reset and extended under the support of the support spring 13.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tool for pressing a connecting rod bushing, comprising a workbench (6), to which a fixing frame (2) is fixedly connected, characterized in that: The bottom of the fixed frame (2) is connected to a pressure column (3) in a lifting manner, the top of the workbench (6) is fixedly connected to a support seat (10) and a support sleeve (5), the top of the support seat (10) is fixedly connected to a large limit sleeve rod (8), the inside of the support sleeve (5) is slidably connected to a small limit sleeve rod (4), the small limit sleeve rod (4) is located at the bottom of the pressure column (3), a support frame (9) is arranged on the top of the workbench (6), the inner side of the support frame (9) is rotatably connected to a pressure block (7), and the pressure block (7) is located between the small limit sleeve rod (4) and the large limit sleeve rod (8).

2. A tool for pressing a connecting rod bushing according to claim 1, characterized in that: The top of the support sleeve (5) is provided with an opening, the inner side of the opening is provided with a sliding groove, a small limit sleeve rod (4) is inserted into the opening, the bottom of the small limit sleeve rod (4) is fixedly connected to a support spring (13), and one end of the support spring (13) is fixedly connected to the inner wall of the support sleeve (5).

3. The tooling for connecting rod pressing bushing according to claim 1, characterized in that: The outer wall of the small limit sleeve rod (4) is fixedly connected with a slider (12), and the sliders (12) are distributed in a circular shape with equal spacing relative to the outer wall of the small limit sleeve rod (4).

4. A tool for pressing a connecting rod bushing according to claim 3, characterized in that: One side of the sliding block (12) is inserted into a sliding groove on the inner wall of the opening of the supporting sleeve (5), and the sliding block (12) and the supporting sleeve (5) form a sliding connection.

5. The tooling for connecting rod pressing bushing according to claim 1, characterized in that: A driving motor (11) is fixedly connected to one side of the support frame (9), and one side of the shaft of the driving motor (11) is connected to a shaft rod on one side of the pressing block (7).

6. The tooling for connecting rod pressing bushing according to claim 1, characterized in that: The diameter of the small limiting sleeve rod (4) is smaller than the diameter of the large limiting sleeve rod (8), and the diameter of the large limiting sleeve rod (8) is smaller than the diameter of the support seat (10).

7. The tooling for connecting rod pressing bushing according to claim 1, characterized in that: A downward-pressing hydraulic cylinder (1) is fixedly connected to the top of the fixed frame (2), and one end of the downward-pressing hydraulic cylinder (1) is connected to the top of the pressure column (3).

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