Split type disassembling tool for leather cup of hydraulic pump

Abstract

The utility model discloses a hydraulic pump leather cup split type disassembling tool which comprises a base (15) and a core rod (1), a nut (2) is arranged at the lower end of the core rod (1), a pressing sleeve located on the outer side of the core rod (1) is arranged on the upper side of the nut (2), the pressing sleeve is composed of two arc-shaped plates (3) which are symmetrically distributed relative to the core rod (1), a gap is reserved between the two arc-shaped plates (3), and a pressing block (4) is arranged on the peripheral face of the lower portion of each arc-shaped plate (3). A vertical sinking groove (5) is formed in the inner side of the upper end of the arc-shaped plate (3), a pin shaft (6) is arranged on the core rod (1) in the axial direction, and the end of the pin shaft (6) is located in the sinking groove (5). The upper end of the core rod (1) extends outwards in the radial direction to form a cap (7); and a gasket (8) through which the core rod (1) passes is arranged between the nut (2) and the pressing sleeve. The packing cup has the advantage that the packing cup can be prevented from being damaged and scrapped during decomposition.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of hydraulic pump especially relates to a hydraulic pump leather cup split type disassembly tool. BACKGROUND

[0002] The leather cup of the hydraulic pump is installed in the rear cover of the hydraulic pump and is used for sealing the main shaft to avoid oil leakage of the shaft tail. Figure 4 As shown in the figure, there is a kind of hydraulic pump rear cover on the market, the outer periphery of the rear cover is provided with a flange edge extending radially outward, a through hole is arranged at the rear cover, the lower end of the through hole is expanded radially outward to form a mounting portion, a support ring and a leather cup are arranged in the mounting portion, an annular groove is arranged at the inner hole of the support ring, the support ring is used for supporting the hydraulic pump main shaft in the axial direction, the leather cup is used for sealing the hydraulic pump main shaft, the outer periphery of the leather cup is made of steel material, and the inner side of the leather cup is made of elastic material, when assembling, the support ring and the leather cup are sequentially and tightly pressed into the inner hole of the rear cover by using a press bed. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a hydraulic pump leather cup split type disassembly tool.

[0004] The utility model has the advantages that the leather cup can be prevented from being damaged and scrapped during disassembly.

[0005] The utility model discloses a hydraulic pump leather cup split type disassembly tool, which comprises a core rod, a nut is arranged at the lower end of the core rod, a pressing sleeve is arranged at the upper side of the nut and located outside the core rod, the pressing sleeve is composed of two arc-shaped plates which are symmetrically distributed about the core rod, a gap is arranged between the two arc-shaped plates, a pressing block is arranged on the outer peripheral surface of the lower part of the arc-shaped plate, a vertical sink is arranged at the inner side of the upper end of the arc-shaped plate, a pin shaft is arranged on the core rod in the axial direction, and the end part of the pin shaft is located in the sink.

[0006] In the foregoing hydraulic pump leather cup split type disassembly tool, the upper end of the core rod extends radially outward to form a head.

[0007] In the foregoing hydraulic pump leather cup split type disassembly tool, a gasket is arranged between the nut and the pressing sleeve and penetrated by the core rod.

[0008] In the foregoing hydraulic pump leather cup split type disassembly tool, the width of the sink is matched with the diameter of the pin shaft.

[0009] In the foregoing hydraulic pump leather cup split type disassembly tool, the base is a tubular structure.

[0010] Compared with existing technologies, the pressure sleeve of this invention consists of two independent arc-shaped plates. These two arc-shaped plates are axially connected to the support ring via a pressure block. A mandrel is located between the two arc-shaped plates. By applying axial pressure to the mandrel, the arc-shaped plates move, causing the support ring and the diaphragm to disassemble from the back cover. Because the tooling exerts force on the rigid support ring during disassembly, and the contact area between the support ring and the diaphragm is large, the diaphragm is less likely to break and become unusable during disassembly. Therefore, this invention has the advantage of preventing the diaphragm from breaking and becoming unusable during disassembly.

[0011] In addition, by setting a pin on the mandrel, the two arc-shaped plates are circumferentially limited, ensuring that the two arc-shaped plates are symmetrically distributed on both sides of the mandrel, so that the mandrel is balanced by force on both sides, preventing the leather cup from tilting when it comes out, and effectively protecting the leather cup. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of this utility model.

[0013] Figure 2 This is a top-down view of the two curved plates when they are brought together.

[0014] Figure 3 This is a schematic diagram of the usage state of this utility model.

[0015] Figure 4 This is a structural schematic diagram of the rear cover of an existing hydraulic pump.

[0016] The markings in the attached diagram are as follows: 1-Mandrel, 2-Nut, 3-Arc plate, 4-Pressure block, 5-Sink, 6-Pin, 7-Cap, 8-Washer, 9-Press, 10-Through hole, 11-Mounting part, 12-Support ring, 13-Leather cup, 14-Annular groove, 15-Base, 16-Flange edge, 17-Rear cover. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example: A disassembled fixture for a hydraulic pump piston cup, such as... Figure 1 As shown, the device includes a base 15 and a core rod 1. A nut 2 is located at the lower end of the core rod 1. A pressure sleeve is located on the upper side of the nut 2, outside the core rod 1. The pressure sleeve consists of two symmetrically distributed arc-shaped plates 3 about the core rod 1, with a gap between them. A pressure block 4 is located on the lower outer circumference of the arc-shaped plates 3. A vertical groove 5 is located on the inner side of the upper end of the arc-shaped plates 3. A pin 6 is axially mounted on the core rod 1, with its end located within the groove 5. The width of the groove 5 matches the diameter of the pin 6. The upper end of the core rod 1 extends radially outward to form a cap 7. A washer 8, through which the core rod 1 passes, is located between the nut 2 and the pressure sleeve.

[0019] The base 15 is a tubular structure, and a blind hole can be arranged at the top.

[0020] Method of use: as shown, the rear cover 17 provided with the support ring 12 and the leather cup 13 is placed on the base 15, the flange 16 of the rear cover 17 is supported by the base 15, and the bottom end of the rear cover 17 enters the base 15. Figure 3

[0021] Two arc-shaped plates 3 on the tooling are taken out, inserted into the inner hole of the rear cover 17, and the pressing block 4 enters the annular groove 14 of the support ring 12, then the nut and the washer 8 on the mandrel 1 are removed, the mandrel 1 is inserted between the two arc-shaped plates 3, and the both ends of the pin shaft 6 enter the corresponding recessed grooves 5, at this time, the two arc-shaped plates 3 are attached to the mandrel 1, and the pressing block 4 cannot be radially separated from the annular groove 14. The washer 8 and the nut 2 are reassembled at the lower end of the mandrel 1, and the arc-shaped plate 3 cannot fall under the action of gravity.

[0022] The downward pressure is applied on the mandrel 1 by the press 9, the mandrel 1 pushes the support ring 12 and the leather cup 13 to fall out from the bottom of the rear cover 17, and the disassembly is completed.

[0023] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.​

Claims

1. A hydraulic pump cup split disassembly tool, characterized in that: The utility model relates to a core rod device, including base (15) and core rod (1), the lower end of core rod (1) is equipped with nut (2), the upside of nut (2) is equipped with the pressure cover of core rod (1) outside, the pressure cover is by two arc plate (3) symmetry distribution about core rod (1) composition, the clearance is left between two arc plate (3), the outer circumferential surface on the lower part of arc plate (3) is equipped with pressure block (4), the inside of the upper end of arc plate (3) is equipped with vertical sink groove (5), the axial direction of core rod (1) is equipped with pin shaft (6), and the end of pin shaft (6) is located in sink groove (5).

2. The hydraulic pump cup split disassembly tool of claim 1, wherein: The upper end of the core rod (1) extends radially outward to form a head (7).

3. The hydraulic pump bowl split disassembly tool of claim 1, wherein: A washer (8) is provided between the nut (2) and the pressure cover, through which the core rod (1) passes.

4. The hydraulic pump cup split disassembly tool of claim 1, wherein: The width of the sink groove (5) is matched with the diameter of the pin shaft (6).

5. The hydraulic pump cup split disassembly tool of claim 1, wherein: The base (15) is a tubular structure.

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