Auxiliary spring mounting device

Abstract

The utility model belongs to the field of hydraulic accessories, and relates to a spring auxiliary installation device which comprises a base, a lining, a pressing frame and a pressing head. A step-shaped through hole for positioning the valve core is formed in the base, and the bush is in clearance fit with a hole with a larger diameter of the step-shaped through hole; the end of the lining is matched with the pressing frame, and the lining can move along the step-shaped through hole of the base under stamping of the pressing head. The assembling efficiency of the spring valve element assembly can be improved, the risk of damage in the assembling process is reduced, and the application prospect is wide.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic accessory field relates to a spring auxiliary installation device. BACKGROUND

[0002] Valve core and spring combination often in hydraulic components, spring is used for providing the movement force of valve core. Because spring general rigidity is bigger, it is difficult to compress and install fixed nut manually. In addition, the surface brightness of valve core is high, is easy to be hurt in the installation process. The installation of spring needs a set of labor-saving convenient device. SUMMARY

[0003] The utility model discloses a spring auxiliary installation device realizes the installation of spring on valve core conveniently and safely.

[0004] The utility model discloses a spring auxiliary installation device, including base, bushing, press frame, pressure head, the base is opened the stepped through -hole of positioning valve core, the bushing is matched with the clearance of stepped through -hole bigger diameter hole, the bushing end is matched with the press frame, under the stamping of pressure head, can realize the bushing along the movement of base stepped through -hole.

[0005] When using, the valve core of the spring to be installed is placed in the through -hole, the spring is sleeved on the valve core, the both ends of the spring are placed in the spring seat, the bushing is sleeved on the periphery of the spring, under the stamping of the pressure head, the bushing drives the spring seat to extrude the spring to the design position, then the nut is installed on the valve core, finally the valve core is taken down, the bushing is disassembled, and the assembly of the spring is completed.

[0006] Further, the bushing is combined by two halves, each bushing is semicircular, and the two halves form a complete circle.

[0007] Further, the base includes a center hole and a counterbore, the valve core is installed in the center hole, and the two halves of the bushing are installed in the counterbore of the base after being combined.

[0008] Further, one end of the two halves of the bushing is installed in the hole of the base for guiding when the spring is compressed, and the other end of the two halves of the bushing has a flange with a slightly smaller diameter for pushing the spring seat to compress the spring.

[0009] Further, the press frame is hollow, one end of the press frame receives the head of a machine tool, and the other end of the press frame contacts the bushing, and the press frame can install the nut on the screw rod of the valve core in the hollow position after pushing the bushing into place.

[0010] Further, the end of the press frame is provided with a counterbore, and the end of the bushing is arranged in the counterbore to prevent the bushing from deviating during extrusion.

[0011] The utility model discloses the beneficial effects

[0012] The spring valve core assembly can improve assembly efficiency, reduce the risk of damage during assembly, has wide application prospects, and can obtain high input-output ratio economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a structural schematic diagram of the utility model.

[0014] Among them, 1 is machine tool pressure head, 2 is pressure frame, 3 is nut, 4 is bushing A, 5 is spring seat B, 6 is valve core, 7 is base, 8 is spring seat A, 9 is bushing B, 10 is spring.

[0015] Fig. 2 is the nut state schematic diagram of bushing installation in device;

[0016] Fig. 3 is the final state schematic diagram after two half bushings are taken off. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical scheme of the utility model embodiment, the utility model is described in detail below in combination with the drawings or specific implementation cases of the specification, and it should be noted that some (but not all) in the disclosed examples are shown in the drawings. In fact, many different examples can be described and these examples should not be understood as being limited to the examples set forth herein. On the contrary, these examples are described so that the positive effects of the utility model are more embodied, and the details not described in the text are regarded as known technology or conventional technology means in the art.

[0018] Referring to the drawings Figs. 1-3 , the spring auxiliary installation device is as shown in the drawings Fig. 1 , the base 7 is placed on a plane, the internal middle step hole, the valve core 6 is put into the middle hole, and the bottom is naturally flush with the plane. In turn, the spring seat B 5, the spring 10 and the spring seat A 8 are placed on the valve core 6;

[0019] In the specific implementation case, the bushing is semicircular, two half bushings form a complete circle, and the gap between the diameter of the circle and the diameter of the base counterbore is about 0.02mm-0.06mm. After the two half bushings are combined, one end is fitted into the base hole for guiding when the spring is compressed. The other end flange plate hole diameter is slightly smaller, used to push the spring seat to compress the spring.

[0020] After the two half bushings A 4 and bushings B 9 are combined, they are put into the step hole of the base. The inner hole formed by the bushing combination covers the spring seat A. The pressure frame 2 is placed flat on the upper surface of the bushing. The machine tool pressure head 1 is used to press down the pressure frame.

[0021] The pressure frame moves downward to push the bushing, and the bushing uses the orientation of the outer circle to assist the spring seat to compress the spring.

[0022] When the screw rod of the valve core is exposed, the nut 3 is installed on the screw rod through the middle space of the pressing frame and rotated to the position.

[0023] At this time, the valve core assembly is removed, as shown in the figure. Fig. 2 The spring has been compressed in place. At this time, the bushing is also pressed between the nut and the spring seat.

[0024] The flange of the bushing is clamped with a tool, and the bushing is taken out to the outside, as shown in the figure. Fig. 3 At this time, the valve core spring assembly is completely assembled.

[0025] The above specific embodiments or cases are only used to explain the technical solutions of the present application, and are not limited to the present application. The parts not described in detail are regarded as conventional technical means or common knowledge in the art. It can be understood by those skilled in the art that: based on the design idea of the present application, the technical solutions recorded in the foregoing embodiments can be modified or some or all of the technical features can be replaced, and these modified, replaced and modified technical solutions do not deviate from the technical essence of the present application, and should be covered within the protection scope of the present application.

Claims

1. A spring-assisted mounting device, characterized by It comprises a base, a bushing, a pressing frame and a pressing head; the base is provided with a stepped through hole for positioning a valve core, the bushing is matched with the stepped through hole in a larger diameter hole gap; the end of the bushing is matched with the pressing frame, and under the stamping of the pressing head, the bushing can move along the stepped through hole of the base.

2. A spring-assisted mounting device according to claim 1, characterized in that The bushing is composed of two halves, each of which is semicircular, and the two halves form a complete circle.

3. A spring-assisted mounting device as claimed in claim 2, characterized in that After the two halves of the bushing are combined, one end is fitted into the hole of the base for guiding when the spring is compressed; the other end is provided with a flange with a slightly smaller hole diameter for pushing the spring seat to compress the spring.

4. A spring-assisted mounting device according to claim 1 or 3, characterized in that The base comprises a central hole and a counterbore; one end of the valve core is fitted into the central hole; after the two halves of the bushing are combined, they are fitted into the counterbore of the base.

5. A spring-assisted mounting device as claimed in claim 1, characterized in that The inside of the pressing frame is hollow, one end of the pressing frame receives the head of a machine tool, and the other end contacts the bushing; after the pressing frame pushes the bushing into place, a nut can be installed on the screw rod of the valve core in the hollow position.

6. A spring-assisted mounting device as claimed in claim 5, characterized in that The end of the pressing frame is provided with a counterbore, and the end of the bushing is placed in the counterbore to ensure that the bushing does not deviate during extrusion.

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