CN216326304U

CN216326304U - Assembly auxiliary device based on engine idling spring

Info

Publication number: CN216326304U
Application number: CN202122777267.XU
Authority: CN
Inventors: 陆建文
Original assignee: Beiyou Electronic Control Fuel Injection System Tianjin Co ltd
Current assignee: Beiyou Electronic Control Fuel Injection System Tianjin Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-19
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses an engine idling spring-based assembly auxiliary device, which comprises a base, wherein a limiting sleeve is arranged on the upper surface of the base and fixedly connected with the base; a stepped hole is arranged in the limiting sleeve; a positioning jack is arranged in the center of the base, a positioning mandrel is inserted into the positioning jack, a limiting part is arranged at the lower part of the positioning mandrel, and a mandrel section below the limiting part is inserted into the positioning jack of the base; the reset spring is installed in the large-diameter cavity of the stepped hole of the limiting sleeve, the upper portion of the reset spring is abutted to the sliding sleeve, the lower portion of the sliding sleeve is provided with a limiting ring, and the upper end portion of the sliding sleeve extends out of the small-diameter end of the stepped hole. The idling spring and the idling screw are centrally positioned by adopting the technical scheme, so that the idling spring and the idling screw are always in a coaxial state in the press fitting process, and the spring does not have the torsional deformation problem; meanwhile, the upper end face of the limiting sleeve serves as a limiting table face, and the problem of spring doubling caused by over compression is prevented under the condition that effective press-fitting stroke is guaranteed.

Description

Assembly auxiliary device based on engine idling spring

Technical Field

The utility model belongs to the technical field of engine production and manufacturing, and particularly relates to an auxiliary assembly device based on an engine idling spring.

Background

As is well known, an idle spring is a component of an engine, and idle speed of the engine can be achieved by adjusting preload of the idle spring, the idle spring needs to be installed in an idle screw on the engine, and the preload of the idle spring is adjusted by adjusting the idle screw, in the prior art, the idle spring is installed on the idle screw, and there are two conventional methods: the method comprises the steps that firstly, a spring wire is clamped by pliers, and an idle speed spring is screwed into an idle speed screw; secondly, the idle spring is hammered into the idle screw by a hammer. The above method has a drawback that the method causes torsional deformation of the spring; the second method may cause the spring to loop. The two assembling modes easily cause the deformation and the doubling of the spring, thereby influencing the service performance of the spring.

Therefore, the utility model provides the auxiliary device for assembling the idle speed spring of the engine, which solves the problems of spring deformation and coil doubling by using a press-fitting mode.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides an engine idling spring assembly auxiliary device which adopts a press-fitting mode and solves the problems of spring deformation and ring combination.

The utility model is realized in this way, and an engine idling spring-based assembly auxiliary device is characterized by comprising a base, wherein the upper surface of the base is provided with a limit sleeve, the bottom of the limit sleeve is provided with a connecting part, and the connecting part is fixedly connected with the upper end surface of the base through a fastener; a stepped hole is arranged in the limiting sleeve, wherein the large-diameter end is positioned below, and the small-diameter end is positioned above; a positioning jack is arranged in the center of the base, a positioning core shaft is inserted into the positioning jack, a limiting part is arranged at the lower part of the positioning core shaft, the lower surface of the limiting part is attached to the upper surface of the base, and a core shaft section below the limiting part is inserted into the positioning jack of the base; a return spring is arranged in a large-diameter cavity of the stepped hole of the limiting sleeve, and the lower end face of the return spring abuts against the upper surface of the limiting part of the guide mandrel; the upper portion butt sliding sleeve of reset spring, the lower part of sliding sleeve is equipped with the spacing ring, the spacing ring is located the major diameter cavity of shoulder hole, the minor diameter end of shoulder hole is stretched out to the upper end of sliding sleeve.

And the upper part of the limiting sleeve is provided with a notch.

Preferably, the upper part of the sliding sleeve is provided with a counter bore for positioning the idle screw.

Preferably, the upper surface of the positioning mandrel is provided with a positioning column concentric with the positioning mandrel, and the positioning column is used for positioning the idle speed spring.

Preferably, the positioning column is provided with a conical guide part so as to be convenient for placing the idle spring.

By adopting the technical scheme, the utility model has the advantages and the technical effects that: the idling spring and the idling screw are centrally positioned by adopting the technical scheme, so that the idling spring and the idling screw are always in a coaxial state in the press fitting process, and the spring does not have the torsional deformation problem; meanwhile, the upper end face of the limiting sleeve serves as a limiting table face, and the problem of spring doubling caused by over compression is prevented under the condition that effective press-fitting stroke is guaranteed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the press-fitting initial state structure of the present invention;

fig. 3 is a schematic structural view of the press-fitting completion state of the present invention.

In the figure, 1, a base; 1-1, positioning the jack; 2. a limiting sleeve; 2-1, a connecting part; 2-2, a stepped hole; 3. positioning the mandrel; 3-1, a limiting part; 3-2, a positioning column; 3-3, a conical guide part; 4. a return spring; 5. a sliding sleeve; 5-1, a limiting ring; 6. an idle screw; 7. and an idle spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 3, an idle speed spring assembly assisting device based on an engine includes a base 1, a limiting sleeve 2 is mounted on an upper surface of the base, a connecting portion 2-1 is arranged at a bottom of the limiting sleeve, and the connecting portion is fixedly connected with an upper end surface of the base through a fastener; a stepped hole 2-2 is arranged in the limiting sleeve, wherein the large-diameter end is positioned below, and the small-diameter end is positioned above; a positioning jack 1-1 is arranged in the center of the base 1, a positioning core shaft 3 is inserted into the positioning jack, a limiting part 3-1 is arranged at the lower part of the positioning core shaft, the lower surface of the limiting part is attached to the upper surface of the base, and a core shaft section below the limiting part is inserted into the positioning jack 1-1 of the base; a return spring 4 is arranged in a large-diameter cavity of the stepped hole of the limiting sleeve, and the lower end face of the return spring is abutted against the upper surface of the limiting part of the guide mandrel; the upper portion of the reset spring is abutted to the sliding sleeve 5, the lower portion of the sliding sleeve is provided with a limiting ring 5-1 which plays a limiting role, the limiting ring is located in the large-diameter cavity of the stepped hole, and the upper end portion of the sliding sleeve extends out of the small-diameter end of the stepped hole.

And the upper part of the limiting sleeve is provided with a notch 2-3. So as to conveniently take and place the idle speed spring and observe the condition of the idle speed screw pressing process.

Preferably, the upper part of the sliding sleeve is provided with a counter bore 5-2 for positioning the idle screw.

Preferably, the upper surface of the positioning mandrel is provided with a positioning column 3-2 concentric with the positioning mandrel and used for positioning the idle speed spring.

Preferably, the positioning post is provided with a conical guide portion 3-3 to facilitate the insertion of the idle spring.

The use method of the utility model comprises the following steps: firstly, the base is fixed on a working table of the pressure equipment, and the auxiliary device with the structure can realize one-time press mounting to finish the assembly of a plurality of idle screws, namely a plurality of auxiliary devices with the structure are arranged on the working table simultaneously, so that the assembly efficiency is improved; after the fixing is finished, inserting the small end with the idling spring onto a positioning column of a positioning mandrel, then placing an inner hole of the idling screw downwards into a counter bore of a sliding sleeve, starting pressure equipment at the moment, pushing the sliding sleeve to slowly descend by the idling screw under the pressure action of the pressure equipment, slowly pressing the idling spring into an idling spring prefabricated groove in the idling screw under the reaction force of the positioning mandrel, wherein the idling spring and the idling screw are always coaxial, the spring has no torsional deformation problem, and the reset spring and the idling spring are compressed and stored energy simultaneously in the descending process of the sliding sleeve; when the press fitting is in place, removing the pressure; at the moment, the idle screw is restored to an initial state under the action of the return spring and the idle spring, then the idle screw is directly taken out from the position of the gap arranged on the upper part of the limiting sleeve, and at the moment, the idle screw is taken out together with the idle spring; according to the utility model, the pressure stroke is designed according to the depth of the idle spring pre-groove, the upper end surface of the limiting sleeve is preferably designed to be used as a limiting table surface, namely, when a pressure head of pressure equipment presses the upper end surface of the limiting sleeve, the press mounting of the idle spring is completed, and the problem of ring doubling caused by over compression of the spring is prevented under the condition of ensuring the effective press mounting stroke.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An auxiliary device for assembling based on an engine idling spring is characterized by comprising a base, wherein a limiting sleeve is arranged on the upper surface of the base, a connecting part is arranged at the bottom of the limiting sleeve, and the connecting part is fixedly connected with the upper end surface of the base through a fastener; a stepped hole is arranged in the limiting sleeve, wherein the large-diameter end is positioned below, and the small-diameter end is positioned above; a positioning jack is arranged in the center of the base, a positioning core shaft is inserted into the positioning jack, a limiting part is arranged at the lower part of the positioning core shaft, the lower surface of the limiting part is attached to the upper surface of the base, and a core shaft section below the limiting part is inserted into the positioning jack of the base; a return spring is arranged in a large-diameter cavity of the stepped hole of the limiting sleeve, and the lower end face of the return spring abuts against the upper surface of the limiting part of the guide mandrel; the upper portion butt sliding sleeve of reset spring, the lower part of sliding sleeve is equipped with the spacing ring, the spacing ring is located the major diameter cavity of shoulder hole, the minor diameter end of shoulder hole is stretched out to the upper end of sliding sleeve.

2. The engine-based idle spring assembly aid of claim 1, wherein: and the upper part of the limiting sleeve is provided with a notch.

3. The engine-based idle spring assembly aid of claim 1, wherein: the upper part of the sliding sleeve is provided with a counter bore.

4. The engine-based idle spring assembly aid of claim 1, wherein: and the upper surface of the positioning mandrel is provided with a positioning column concentric with the positioning mandrel.

5. The engine-based idle spring assembly aid of claim 4, wherein: the positioning column is provided with a conical guiding part.