CN214055063U - Case end cap locking frock - Google Patents

Abstract

The utility model discloses a valve core plug locking tool, which comprises a base, a conical clamping sleeve, a thread clamping head and an upper sheath; the base comprises a hollow cavity, the hollow cavity comprises a cylindrical cavity and a conical cavity which are communicated with each other, the conical cavity is matched with the conical jacket, and fastening threads are arranged on the periphery of the base; the conical jacket is sleeved in the conical cavity of the base and comprises a clamping end and a fastening end, and the clamping end has elasticity; the fastening end is propped against the inner side of the thread clamping head; the threaded clamping head is connected to the base through fastening threads; the upper sheath is sleeved in the tapered sheath; the surface of the base is provided with a base clamping surface. Therefore, the utility model discloses a case end cap locking frock presss from both sides tight valve plug of packing into after fixing to the case outer face of cylinder because it is that the outer face of cylinder of even compression fixes, and area of contact is big, can the damage of at utmost reduction to the case.

Description

Case end cap locking frock

Technical Field

The utility model relates to a mechanical assembly field especially relates to a case end cap locking frock.

Background

In a hydraulic pump, a spool is an indispensable important component. During assembly of the valve cartridge, there is a step in which the valve plug is screwed into the threads at the end of the valve cartridge and requires that it must be tightened to a specified torque value.

The appearance of the valve core is a smooth cylinder, which causes that the valve core is difficult to fix when the valve plug is screwed down, and the valve plug is difficult to reach a preset torque, and the scheme adopted at present for fixing the valve core comprises the following steps: the vice presss from both sides tightly, utilizes a cylindric lock to insert the mode that the case side opening was fixed, adopts the vice scheme of pressing from both sides tightly, because the case surface is very smooth, and coefficient of friction is very little, so need very big strength just can fix the case, destroys the case very easily, and adopts the mode that the cylindric lock inserted the case side opening, because case hardness is high and the wall is thinner, very easily causes the damage of valve opening department, causes scrapping of case.

In summary, the above problems encountered in assembling the valve plug greatly restrict the assembly efficiency of the valve plug, and affect the product quality.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a valve core plug locking tool is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a case end cap locking frock, includes: the device comprises a base, a conical jacket, a threaded clamping head and an upper sheath;

the base comprises a hollow cavity, the cavity comprises a cylindrical cavity and a conical cavity which are communicated with each other, and the conical cavity is matched with the conical jacket; the periphery of one end of the base provided with the conical cavity is provided with fastening threads;

the conical jacket is sleeved in the conical cavity of the base and comprises a clamping end and a fastening end, and the clamping end has elasticity and can contract or expand along the radial direction; the fastening end abuts against the inner side of the threaded clamping head;

the threaded clamping head is connected to the base through the fastening thread;

the upper sheath is sleeved in the tapered sheath;

the surface of the base is provided with a clamping surface.

Compared with the prior art, the utility model discloses following technological effect has:

the tool clamps and fixes the outer cylindrical surface of the valve element and then loads the valve plug into the valve element, and because the outer cylindrical surface is uniformly compressed to fix, the contact area is large, and the damage to the valve element can be reduced to the greatest extent. A flexible protective sleeve is added between the jacket locking device and the valve core, so that the valve core is further protected from being damaged.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Preferably, the upper jacket is formed by the combination of at least two cylindrical walls; all the cylindrical walls are spliced together

The adoption of the further proposal has the advantages of convenient installation,

preferably, the upper sheath is provided with a limiting convex edge, and the limiting convex edge abuts against the outer side of the thread clamping head.

Adopt above-mentioned further scheme's beneficial effect to prevent that fastening in-process, go up the sheath and take place axial slip.

Preferably, the device further comprises a lower sheath which is sleeved in the cylindrical cavity of the base.

The beneficial effect who adopts above-mentioned further scheme is further to protect the case, avoids the fish tail.

Preferably, the clamping surface on the base is hexagonal.

The beneficial effects of adopting above-mentioned further scheme are that the technology is ripe, can follow each angle and carry out the centre gripping, convenient operation.

Preferably, the periphery of the screw clamp head is provided with a clamping surface.

Adopt above-mentioned further scheme's beneficial effect be, conveniently carry out the centre gripping to the screw thread clamp head, and then fasten.

Preferably, the fastening end of the conical jacket is a frustum, and a conical surface matched with the frustum is arranged on the inner side of the threaded clamping head.

Adopt above-mentioned further scheme's beneficial effect be, the initial assembly position need not meticulous pairing, the assembly operation of being convenient for.

Drawings

Fig. 1 is a schematic structural view of the valve core plug locking tool of the present invention;

FIG. 2 is a cross-sectional structural view of the base;

FIG. 3 is a schematic view of the base from another perspective;

FIG. 4 is a schematic sectional view of a conical jacket;

FIG. 5 is a cross-sectional structural view of the upper sheath;

FIG. 6 is a cross-sectional structural view of the lower sheath;

fig. 7 is a schematic view of the working state structure of the present invention.

In the drawings, the parts names represented by the respective reference numerals are listed as follows:

1. a base; 1-1, cylindrical cavity; 1-2, a conical cavity; 1-3, fastening threads; 1-4, a base clamping surface; 2. a tapered jacket; 2-1, a clamping end; 2-2, fastening ends; 3. a threaded clamping head; 4. putting a sheath; 4-1, cylindrical wall; 4-2, limiting convex edges; 5. a lower sheath; 6. a valve core; 7. and (5) blocking the valve.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Please refer to fig. 1, which is a schematic structural diagram of the valve core plug locking tool of the present invention. Case end cap locking frock includes: the device comprises a base 1, a conical jacket 2, a threaded clamping head 3 and an upper sheath 4;

the base 1 comprises a hollow cavity, the hollow cavity comprises a cylindrical cavity 1-1 and a conical cavity 1-2 which are communicated with each other, the conical cavity 1-2 is matched with the conical jacket 2, and fastening threads 1-3 are arranged on the periphery of the base 1; the surface of the base 1 is provided with hexagonal base clamping surfaces 1-4.

The conical jacket 2 is sleeved in a conical cavity 1-2 of the base 1 and comprises a clamping end 2-1 and a fastening end 2-2, and the clamping end 2-1 is of an elastic chuck structure; the fastening end 2-2 abuts against the inner side of the threaded clamping head 3; the fastening end 2-2 of the conical jacket 2 is a frustum, and the inner side of the threaded clamping head 3 is provided with a conical surface matched with the frustum.

The threaded clamping head 3 is connected to the base 1 through the fastening threads 1-3, and a clamping head clamping surface is arranged on the periphery of the threaded clamping head 3;

the upper sheath 4 is sleeved in the conical jacket 2, and the upper sheath 4 consists of two cylindrical walls 4-1 and is provided with a limiting convex edge 4-2; the device also comprises a lower sheath 5, and the lower sheath 5 is sleeved in the cylindrical cavity 1-1 of the base 1.

As shown in fig. 7, which is a schematic view of the working state structure of the tool, the tool clamps the valve plug 6, so that the valve plug 7 is conveniently fixed on the valve plug.

In the using process, the lower part (square or round) of the base 1 is fixed on the working table; and withdrawing the threads of the thread clamping head 3 by using a wrench, enabling the conical jacket 2 to be in a loosening position, ensuring that the aperture of the conical jacket 2 can smoothly place the valve core 6 to be assembled, pre-tightening the thread clamping head 3 by using the wrench, ensuring that the conical jacket 2 and the upper sheath 4 normally act, and screwing the thread clamping head 3. And (3) pre-tightening the valve plug 7 to be assembled to the valve core 6, and performing torque locking by using a torque wrench. And after locking, loosening the thread clamping head 3 and taking out the valve core 6.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (7)

1. A valve core plug locking tool is characterized by comprising a base, a conical jacket, a thread clamping head and an upper sheath;

the base comprises a hollow cavity, the hollow cavity comprises a cylindrical cavity and a conical cavity which are communicated with each other, the conical cavity is matched with the conical jacket, and fastening threads are arranged on the periphery of the base;

the conical jacket is sleeved in the conical cavity of the base and comprises a clamping end and a fastening end, and the clamping end has elasticity; the fastening end abuts against the inner side of the threaded clamping head;

the threaded clamping head is connected to the base through the fastening thread;

the upper sheath is sleeved in the tapered sheath;

the surface of the base is provided with a base clamping surface.

2. The valve core plug locking tool according to claim 1, wherein the upper sheath is formed by combining at least two cylindrical walls.

3. The valve core plug locking tool according to claim 1, wherein the upper sheath is provided with a limiting convex edge.

4. The valve core plug locking tool according to claim 1 or 2, further comprising a lower sheath, wherein the lower sheath is sleeved in the cylindrical cavity of the base.

5. The valve core plug locking tool according to claim 1 or 2, wherein the clamping surface on the base is hexagonal.

6. The valve core plug locking tool according to claim 1 or 2, wherein a clamping head clamping surface is arranged on the periphery of the threaded clamping head.

7. The valve core plug locking tool according to claim 1 or 2, wherein the fastening end of the conical jacket is a frustum, and a conical surface matched with the frustum is arranged on the inner side of the threaded clamping head.

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