Cone valve assembling tool

Abstract

The cone valve assembling tool comprises a main rod, one end of the main rod is provided with a containing hole, and the other end of the main rod is provided with a handle. The inner end of the center rod is located in the containing hole, and the center rod is in clearance fit with the containing hole; the center rod is sleeved with the wrench, and the wrench is in clearance fit with the center rod; the inner end of the wrench is fixed on the main rod; and the outer end of the central rod is exposed out of the wrench. According to the utility model, the conditions of high installation difficulty, serious damage of a flat-end screwdriver to a cone valve sleeve tooth groove and mutual friction damage of a cone valve sleeve sealing angle and a cone valve core sealing surface in the existing assembly mode can be avoided, and the condition of metal scrap falling caused by the conditions can be avoided, so that the aim of reducing the oil pollution degree of a pump cavity is fulfilled, and the service life of the pump cavity is prolonged. The purposes of prolonging the service life of the cone valve and improving the assembling efficiency of the cone valve are achieved.

Description

Technical Field

[0001] The utility model relates to the field of cone valve assembly, in particular to a cone valve assembly tool. Background Art

[0002] During the operation of the hydraulic pump, if the oil pressure in the pump chamber is too high, the high-pressure oil acts on the upper surface of the cone valve core to overcome the spring force under the cone valve core, causing the cone valve core to separate from the cone valve sleeve, forming an oil path, and the high-pressure oil in the pump chamber flows out through the oil path to achieve the pump chamber pressure relief effect. When the pump chamber is depressurized, the internal oil pressure is less than the spring force under the cone valve core, and the cone valve core is tightly fitted with the cone valve sleeve under the action of the spring pressure, and the oil path is closed again.

[0003] At present, the main process of assembling the hydraulic pump cone valve is to put the spring in the installation hole, install the cone valve core on the spring, put the cone valve sleeve on the cone valve core, and screw the cone valve sleeve into the threaded hole with a flat screwdriver to complete the cone valve assembly. However, during the assembly process, the cone valve core sealing surface and the cone valve sleeve sealing angle are always in close contact under the action of the spring elastic force. As the cone valve sleeve is rotated and installed, the cone valve sleeve sealing angle and the cone valve core sealing surface cause friction damage to each other, and it is easy to cause metal debris to fall and pollute the oil; in addition, as the cone valve sleeve is slowly installed, the spring compression increases, the elastic force increases, the installation difficulty increases, and the flat screwdriver causes more damage to the cone valve sleeve tooth groove, affecting the subsequent disassembly and assembly of the cone valve.

[0004] Therefore, it is urgent to develop a tool specifically for assembling the cone valve of a hydraulic pump to reduce the damage to the cone valve during installation, facilitate installation, and improve assembly efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a cone valve assembly tool. The utility model can avoid the existing assembly methods, such as the difficulty in installation, the serious damage to the cone valve sleeve tooth groove by the flat screwdriver, the friction damage between the cone valve sleeve sealing angle and the cone valve core sealing surface, and the falling of metal debris caused by the above-mentioned situation, thereby achieving the purpose of reducing the contamination of the pump chamber oil, and achieving the purpose of increasing the service life of the cone valve and the assembly efficiency of the cone valve.

[0006] The technical solution of the utility model is: a cone valve assembly tool, comprising a main rod, one end of the main rod is provided with a receiving hole, and the other end of the main rod is provided with a handle;

[0007] A center rod, the inner end of which is located in the receiving hole, and a clearance fit is formed between the center rod and the receiving hole;

[0008] A wrench is sleeved outside the center rod, and there is a clearance fit between the wrench and the center rod; the inner end of the wrench is fixed to the main rod;

[0009] The outer end of the center rod is exposed from the wrench.

[0010] In the aforementioned cone valve assembly tool, the center rod comprises a rod body, and a limit plate is provided on the rod body.

[0011] In the aforementioned cone valve assembly tool, the inner end of the rod body is provided with a conical surface.

[0012] In the aforementioned cone valve assembly tool, the accommodating hole includes an inner hole and an outer hole distributed in a stepped manner, and the diameter of the outer hole is larger than the diameter of the inner hole; the limiting plate is located in the outer hole, and the rod body on the inner side of the limiting plate is located in the inner hole.

[0013] In the aforementioned cone valve assembly tool, the wrench includes a wrench body, the center of the wrench body is provided with an axially distributed central through hole, and the diameter of the central through hole is larger than the diameter of the rod body and smaller than the diameter of the limit plate; the outer end surface of the wrench body is provided with wrench teeth.

[0014] In the aforementioned cone valve assembly tool, the number of the wrench teeth is 2, and the 2 wrench teeth are symmetrically distributed.

[0015] In the aforementioned cone valve assembly tool, the wrench and the main rod are connected and fixed via screws.

[0016] In the aforementioned cone valve assembly tool, the other end of the main rod is provided with a radial mounting through hole for mounting a handle.

[0017] Compared with the prior art, the utility model is composed of a handle, a main rod, a center rod and a wrench. The wrench is fixedly connected to the main rod, and the center rod, the wrench and the main rod are matched with each other in a clearance. The wrench and the main rod can rotate relative to the center rod, and the center rod is exposed from the wrench for a certain distance, so that the center rod can squeeze the cone valve core during the assembly process, and the sealing angle of the cone valve core and the cone valve sleeve always maintain a gap, completely eliminating the friction damage caused by the original installation method and the metal chips generated, reducing the oil contamination, increasing the service life of parts, reducing the scrap rate of parts, and saving manufacturing costs; at the same time, the assembly tool of the present application can greatly shorten the assembly and maintenance time, and improve the assembly and maintenance efficiency. The handle, main rod, center rod and wrench of the present application adopt a split structure, which is flexible and convenient to operate and labor-saving. At the same time, there is no spring force to produce a damping effect on the cone valve sleeve during the installation process, which greatly reduces the damage of the wrench teeth to the tooth grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is the structural diagram of the center rod;

[0020] Figure 3 It is the structure diagram of the wrench;

[0021] Figure 4 It is the main pole structure diagram;

[0022] Figure 5 It is an assembly schematic diagram of the present invention.

[0023] The marks in the accompanying drawings are: 1-spring, 2-cone valve core, 3-cone valve sleeve, 4-center rod, 5-wrench, 6-screw, 7-main rod, 8-handle, 9-accommodating hole, 10-radial mounting through hole, 401-rod body, 402-limiting plate, 403-conical surface, 901-inner hole, 902-outer hole, 501-wrench body, 503-center through hole, 502-wrench teeth; A-sealing surface, B-sealing angle, C-tooth groove. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0025] Embodiment. A cone valve assembly tool, comprising: Figure 1-5 As shown, a cone valve assembly tool comprises a main rod 7, a receiving hole 9 is provided at one end of the main rod 7, and a handle 8 is provided at the other end of the main rod 7;

[0026] A center rod 4, the inner end of the center rod 4 is located in the receiving hole 9, and there is a clearance fit between the center rod 4 and the receiving hole 9;

[0027] The wrench 5 is sleeved outside the center rod 4, and there is a clearance fit between the wrench 5 and the center rod 4; the inner end of the wrench 5 is fixed to the main rod 7;

[0028] The outer end of the center rod 4 is exposed from the wrench 5 .

[0029] The clearance fit allows the center rod and the wrench, and the center rod and the main rod to rotate relative to each other, and the rotation direction is around the center axis.

[0030] The central rod 4 includes a rod body 401 , on which a limiting plate 402 is disposed.

[0031] The inner end of the rod body 401 is provided with a conical surface 403 .

[0032] The accommodating hole 9 includes an inner hole 901 and an outer hole 902 which are distributed in a stepped manner, and the diameter of the outer hole 902 is larger than the diameter of the inner hole 901 ; the limiting plate 403 is located in the outer hole 902 , and the rod body 401 on the inner side of the limiting plate 403 is located in the inner hole 901 .

[0033] The wrench 5 includes a wrench body 501 , the center of which is provided with an axially distributed central through hole 503 , and the diameter of the central through hole 503 is larger than the diameter of the rod body 401 and smaller than the diameter of the limiting plate 402 ; the outer end surface of the wrench body 501 is provided with wrench teeth 502 .

[0034] The number of the wrench teeth 502 is two, and the two wrench teeth 502 are symmetrically distributed.

[0035] The wrench 5 and the main rod 7 are connected and fixed via screws 6 .

[0036] The other end of the main rod 7 is provided with a radial mounting through hole 10 for mounting the handle 8 .

[0037] By setting the diameter of the central through hole of the wrench to be smaller than the diameter of the limiting disk and larger than the diameter of the central rod body, when the wrench is mounted on the end of the main rod, the central rod can only move along the axial direction.

[0038] Preferably, the receiving hole is a cylindrical hole structure.

[0039] like Figure 1 As shown, the tool adopts a split design structure, which consists of a center rod 4, a wrench 5, a screw 6, a main rod 7 and a handle 8. The structure of the center rod is as follows Figure 2 , the wrench structure is as follows Figure 3 , the main rod structure is as follows Figure 4 .

[0040] The conical surface of the center rod and the bottom surface of the cylindrical hole of the main rod are processed smoothly and lubricated with lubricating oil to reduce the friction of relative movement. Figure 4 Insert the cone valve assembly tool into the main rod (the conical surface is installed in the inner hole, and the limit plate is installed in the outer hole), insert the wrench from the other end of the center rod, align the four threaded holes of the wrench with the four smooth holes of the main rod, and fix them with four screws. Install the handle at the tail of the main rod, and the cone valve assembly tool is assembled. The overall structure is shown in the figure. Figure 1 shown.

[0041] like Figure 5 As shown, the assembly process of the present invention is to first align the center rod 4 of the cone valve assembly tool with the cone valve core 2 and apply force, so that the cone valve core compresses the spring 1, and the cone valve core sealing surface A is away from the sealing angle B of the cone valve sleeve 3. At the same time, the wrench teeth 502 of the wrench 5 are aligned with the tooth groove C of the cone valve sleeve and inserted. When the handle 8 is rotated, the wrench fixed by the screw 6 also rotates together, and then the transmission relationship between the wrench teeth 502 and the tooth groove C drives the cone valve sleeve to rotate into the threaded mounting hole. During the assembly process, the center rod is always stationary relative to the rotation of the wrench, and only compresses and moves the spring in the axial direction as the cone valve sleeve is installed, so that the sealing surface and the sealing angle always maintain a safe gap.

Claims

1. A cone valve assembly tool, characterized in that: It comprises a main rod (7), one end of which is provided with a receiving hole (9), and the other end of which is provided with a handle (8); A center rod (4), wherein the inner end of the center rod (4) is located in the receiving hole (9), and a clearance fit is formed between the center rod (4) and the receiving hole (9); The wrench (5) is sleeved outside the center rod (4), and there is a clearance fit between the wrench (5) and the center rod (4); the inner end of the wrench (5) is fixed to the end of the main rod (7); The outer end of the center rod (4) is exposed from the wrench (5).

2. A cone valve assembly tool according to claim 1, characterized in that: The central rod (4) comprises a rod body (401), and a limiting plate (402) is provided on the rod body (401).

3. A cone valve assembly tool according to claim 2, characterized in that: The inner end of the rod body (401) is provided with a conical surface (403).

4. A cone valve assembly tool according to claim 2, characterized in that: The accommodating hole (9) comprises an inner hole (901) and an outer hole (902) which are distributed in a stepped manner, and the diameter of the outer hole (902) is larger than the diameter of the inner hole (901); the limiting plate (402) is located in the outer hole (902), and the rod body (401) on the inner side of the limiting plate (402) is located in the inner hole (901).

5. A cone valve assembly tool according to claim 2, characterized in that: The wrench (5) comprises a wrench body (501), the center of which is provided with an axially distributed central through hole (503), and the diameter of the central through hole (503) is larger than the diameter of the rod body (401) and smaller than the diameter of the limiting plate (402); and the outer end surface of the wrench body (501) is provided with wrench teeth (502).

6. A cone valve assembly tool according to claim 5, characterized in that: The number of the wrench teeth (502) is two, and the two wrench teeth (502) are symmetrically distributed.

7. A cone valve assembly tool according to claim 1, characterized in that: The wrench (5) and the main rod (7) are connected and fixed via screws (6).

8. The cone valve assembly tool according to claim 1, characterized in that: The other end of the main rod (7) is provided with a radial mounting through hole (10) for mounting a handle (8).

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