Simple press-fitting device with front guide function

Abstract

The utility model discloses a simple press fitting device with a front guide, which comprises a front guide pin and a guide rod, the outer side surface of the guide rod is sleeved with a gear pump bushing, the front guide pin is detachably connected with the guide rod, and the gear pump bushing is clamped and fixed. The gear pump bushing can be stably pressed into the gear pump body without a special press-fitting mechanism, the press-fitting device is suitable for press-fitting of small-batch gear pump bushings, the economical efficiency is high, and the use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pump installation, in particular to a simple press-fitting device with a front guide. Background Art

[0002] At present, the gear pump bushing is mostly pressed onto the gear pump body with the help of specific pressing mechanisms, special pneumatic devices, equipment, etc., which is relatively cumbersome and the investment cost is relatively high, especially for the press-fitting of single-piece and small-batch gear pump bushings, the cost-effectiveness is low.

[0003] A copper bushing guiding press-fitting tool with patent number CN205817215U proposes a device to prevent bushing press-fitting deformation, but the guiding head part and the bushing are not effectively connected as a whole and are in an active state, and are easy to fall off. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a simple pressing device with a front guide, which has low cost and is easy to operate. The gear pump bushing can be stably pressed into the gear pump body, and the problems in the background technology can be effectively solved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a simple press-fitting device with a front guide, including a front guide pin and a guide rod, the outer side surface of the guide rod is sleeved with a gear pump bushing, the front guide pin and the guide rod are detachably connected to clamp and fix the gear pump bushing.

[0006] As a preferred technical solution of the utility model, the front guide pin and the guide rod are threadedly connected.

[0007] As a preferred technical solution of the utility model, the outer diameter of the leading positive pin is the same as the outer diameter of the gear pump bushing.

[0008] As a preferred technical solution of the utility model, there is a clearance fit between the gear pump bushing and the guide rod.

[0009] Compared with the prior art, the beneficial effects of the utility model are: the simple press-fitting device with a front guide pin is reasonably designed and ingeniously conceived. The gear pump bushing is sleeved on the guide rod and then fixed with a front guide pin, so that the front guide pin, the gear pump bushing and the guide rod form a whole, thereby ensuring the stability of the pressing process. At the same time, the device is low in cost and simple to operate, and is suitable for the press-fitting of small batches of gear pump bushings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model.

[0011] In the figure: 1 front guide pin, 2 gear pump bushing, 3 guide rod. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the present invention). Figure 1 Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0013] See also Figure 1 The utility model provides a technical solution: a simple press-fitting device with a front guide, including a front guide pin 1 and a guide rod 3, the outer side of the guide rod 3 is sleeved with a gear pump bushing 2, the front guide pin 1 and the guide rod 3 are threadedly connected to clamp and fix the gear pump bushing 2.

[0014] Furthermore, in order to maintain a reasonable gap between the bottom hole of the gear pump body, the outer diameter of the leading positive pin 1 is the same as the outer diameter of the gear pump bushing 2 .

[0015] Furthermore, in order to facilitate the rapid disengagement of the gear pump bushing 2 and the guide rod 3, a clearance fit is provided between the gear pump bushing 2 and the guide rod 3.

[0016] When in use: first use liquid nitrogen to cool the gear pump bushing 2, then pre-install the gear pump bushing 2 on the guide rod 3, and then install the leading guide pin 1 on the guide rod 3 through threads. At this time, the three form a whole, and then align the leading guide pin 1 with the hole on the gear pump body for guidance, and continue to press it down until the end face of the guide rod 3 fits with the end face of the pump body. The gear pump bushing 2 is press-fitted, and finally the leading guide pin 1 is removed, the guide rod 3 is taken out, and the press-fitting is completed.

[0017] The utility model has a simple structure and adopts a leading positive pin 1 for press-fitting guidance, so that the gear pump bushing 2 can be pressed stably and reliably. At the same time, the device has low cost, does not require the aid of a specific press-fitting mechanism, is easy to operate, and has a high cost-effectiveness.

[0018] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple press-fitting device with front guide, characterized in that: The invention comprises a leading guide pin (1) and a guide rod (3), wherein the outer side surface of the guide rod (3) is sleeved with a gear pump bushing (2), and the leading guide pin (1) and the guide rod (3) are detachably connected to clamp and fix the gear pump bushing (2).

2. A simple press-fitting device with front guide according to claim 1, characterized in that: The front guide pin (1) and the guide rod (3) are threadedly connected.

3. A simple press-fitting device with front guide according to claim 1, characterized in that: The outer diameter of the leading positive pin (1) is the same as the outer diameter of the gear pump bushing (2).

4. A simple press-fitting device with front guide according to claim 1, characterized in that: There is a clearance fit between the gear pump bushing (2) and the guide rod (3).

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