Self-locking hydraulic nut

Abstract

The utility model relates to the technical field of hydraulic nuts, and discloses a self-locking type hydraulic nut which is characterized in that an external thread section is arranged on the outer side of a connecting seat, a limiting ring is movably connected to the outer side of the connecting seat in a sleeved mode, a first internal thread section is arranged on the inner side of the limiting ring, and the limiting ring is connected to the outer side of the connecting seat through threads; after the nut is installed, a tool is inserted into the first inserting groove, then the tool is rotated to drive the limiting ring to rotate, and then the limiting ring abuts against the top of the base, so that the moving position of the connecting base can be limited, and the position of the connecting base does not need to be continuously supported through hydraulic oil; when the piston groove needs to be cleaned, the blocking bolt is detached, then cleaning liquid is guided into the oil guide hole, the cleaning liquid enters the piston groove and then is guided out through the cleaning hole, cleaning of the interior of the piston groove can be completed through high-speed water flow, and therefore the hydraulic bolt can be repeatedly used conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic nut technical field, concretely is a self locking type hydraulic nut. BACKGROUND

[0002] Hydraulic nut is used for the bolt that needs to be frequently disassembled, the pre-tightening of oversize bolt, the locking of large workpiece and the like occasion, and can be made hydraulic interference connection dismounting tool. On the tapered shaft or shaft sleeve, installing or dismounting bearing is usually difficult and time-consuming engineering. Using hydraulic nut, work efficiency can be improved, and such problems are reduced. The principle is that hydraulic oil is input into the nut by high-pressure oil pump to generate the force of pushing the piston, meets the installation or dismounting bearing - effortless, accurate and safe.

[0003] The traditional hydraulic nut needs power source to keep the output action pressure of the hydraulic nut when keeping the bolt locking force for a long time, the requirement of keeping the action pressure of the power source is high, needs to keep pressurizing for a long time, makes the power system not durable, cannot keep the bolt locking force stably and safely for a long time, therefore, a self locking type hydraulic nut is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a self locking type hydraulic nut, to solve the problem that the traditional hydraulic nut needs power source to keep the output action pressure of the hydraulic nut when keeping the bolt locking force for a long time, the requirement of keeping the action pressure of the power source is high, needs to keep pressurizing for a long time, makes the power system not durable, cannot keep the bolt locking force stably and safely for a long time.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a self locking type hydraulic nut, comprising

[0006] The base is provided with a piston groove in the top, and a connecting seat is arranged in the inside of the piston groove.

[0007] The locking assembly is arranged on the outside of the connecting seat.

[0008] The locking assembly comprises a limiting ring, an outer threaded segment is arranged on the outside of the connecting seat, the limiting ring is movably sleeved on the outside of the connecting seat, a first inner threaded segment is arranged on the inside of the limiting ring, and the limiting ring is connected to the outside of the connecting seat through screw thread.

[0009] As preferred, the bottom of the connecting seat is provided with a piston, the piston is slidably connected to the inside of the piston groove, and a sealing assembly is arranged on the piston.

[0010] Preferably, the sealing assembly comprises a first sealing ring, annular grooves are formed on the inner and outer sides of the connecting seat, the first sealing ring is arranged in the annular grooves, and the outer side of the piston is sleeved with a second sealing ring.

[0011] Preferably, a cleaning hole is formed in the bottom of the base, the cleaning hole is communicated with the piston groove, and the cleaning hole is connected with a plugging bolt.

[0012] Preferably, a through hole is formed in the base, a connecting groove is formed in the inner side of the connecting seat, and the connecting groove is provided with a second internal thread segment.

[0013] Preferably, an oil guide hole is formed in the base, and the oil guide hole is communicated with the piston groove.

[0014] Preferably, a plurality of first insertion grooves are formed in the outer side of the limiting ring, and a plurality of second insertion grooves are formed in the outer side of the base.

[0015] Compared with the prior art, the utility model has the following technical effects: when the nut is installed, the tool is inserted into the first insertion groove, the tool is rotated to drive the limiting ring to rotate, the limiting ring abuts against the top of the base, the position of the connecting seat can be limited, and the position of the connecting seat does not need to be continuously supported by hydraulic oil; when the piston groove needs to be cleaned, the plugging bolt is disassembled, cleaning liquid is introduced into the oil guide hole, the cleaning liquid enters the piston groove, and then is discharged through the cleaning hole, the piston groove can be cleaned through high-speed water flow, and the hydraulic bolt can be repeatedly used. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a bottom structure schematic diagram of the utility model;

[0019] Figure 3 It is a top view structure schematic diagram of the utility model;

[0020] Figure 4 It is a sectional structure schematic diagram of the utility model;

[0021] Figure 5 The utility model discloses a connecting seat structure schematic view.

[0022] Mark explanation: 1, base, 2, piston groove, 3, connecting seat, 4, piston, 5, oil guide hole, 6, annular groove, 7, first sealing ring, 8, limit ring, 9, first internal thread section, 10, external thread section, 11, second internal thread section, 12, through -hole, 13, cleaning hole, 14, plugging bolt, 15, second sealing ring, 16, first slot, 17, second slot. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] It should be understood that the structures, proportions, sizes and the like shown in the drawings of the specification are only used to cooperate with the disclosed content of the specification for understanding and reading by those skilled in the art and are not used to limit the limiting conditions of the implementable application, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be produced and achieved by the application, should still fall within the scope of the disclosed technical content.

[0025] EMBODIMENT

[0026] Please refer to Figures 1-5 The utility model provides a kind of self-locking hydraulic nut, including base 1, the top of base 1 is set with piston groove 2, the inside of piston groove 2 is provided with connecting seat 3;Locking assembly, locking assembly is set to the outside of connecting seat 3;

[0027] By setting locking assembly, it is not necessary to continuously support the position of connecting seat 3 by hydraulic oil;Locking assembly includes limit ring 8, the outside of connecting seat 3 is provided with external thread section 10, limit ring 8 is movably sleeved on the outside of connecting seat 3, the inside of limit ring 8 is provided with first internal thread section 9, limit ring 8 is connected to the outside of connecting seat 3 by screw thread;When nut installation is completed, by inserting tool to the inside of first slot 16, then rotating tool drives limit ring 8 to rotate, then limit ring 8 is in abutment on the top of base 1, the position of connecting seat 3 can be limited

[0028] In order to improve the stability of bolt fixing, the bottom 1 is provided with a through hole 12, the inner side of the connecting seat 3 is provided with a connecting groove, the inside of the connecting groove is provided with a second internal thread segment 11, the bottom 1 is provided with an oil guide hole 5, the oil guide hole 5 is communicated with the piston groove 2, the outer side of the limiting ring 8 is provided with a plurality of first insertion grooves 16, the outer side of the bottom 1 is provided with a plurality of second insertion grooves 17, the bottom of the connecting seat 3 is provided with a piston 4, the piston 4 is slidingly connected to the inside of the piston groove 2, the piston 4 is provided with a sealing assembly, the sealing assembly comprises a first sealing ring 7, the inner and outer sides of the connecting seat 3 are provided with annular grooves 6, the inside of the annular groove 6 is provided with the first sealing ring 7, the outer side of the piston 4 is sleeved with a second sealing ring 15; by inserting one end of the bolt into the inside of the through hole 12, the one end is abutted at one end of the connecting groove, then the tool is inserted into the inside of the second insertion groove 17 and the bottom 1 is rotated, so that one end of the bolt is screwed into the inside of the second internal thread segment 11, so that the connecting seat 3 is connected with the bolt, then the oil pipe joint is inserted into the inside of the oil guide hole 5, the hydraulic oil enters the inside of the piston groove 2 through the oil guide hole 5, then the hydraulic oil pushes the piston 4 to move upward in the inside of the piston groove 2, so that one end of the bolt is pulled upward by the connecting seat 3, preventing the bottom 1 from being installed out of position.

[0029] In order to recycle the hydraulic nut, the bottom of the bottom 1 is provided with a cleaning hole 13, the cleaning hole 13 is communicated with the piston groove 2, the inside of the cleaning hole 13 is connected with a plugging bolt 14; by disassembling the plugging bolt 14, then introducing cleaning liquid into the inside of the oil guide hole 5, the cleaning liquid enters the inside of the piston groove 2, and then is discharged through the cleaning hole 13, by the high-speed water flow, the inside of the piston groove 2 can be cleaned.

[0030] When the bolt needs to be fixed, one end of the bolt is inserted into the inside of the through hole 12, the one end is abutted at one end of the connecting groove, then the tool is inserted into the inside of the second insertion groove 17 and the bottom 1 is rotated, so that one end of the bolt is screwed into the inside of the second internal thread segment 11, so that the connecting seat 3 is connected with the bolt, then the oil pipe joint is inserted into the inside of the oil guide hole 5, the hydraulic oil enters the inside of the piston groove 2 through the oil guide hole 5, then the hydraulic oil pushes the piston 4 to move upward in the inside of the piston groove 2, so that one end of the bolt is pulled upward by the connecting seat 3, preventing the bottom 1 from being installed out of position, thereby affecting the stability of the installation of the bottom 1;

[0031] When the nut is installed, the position of the connecting seat 3 can be limited by inserting a tool into the inside of the first slot 16, then rotating the tool to drive the limiting ring 8 to rotate, and then the limiting ring 8 abuts against the top of the base 1, so that the position of the connecting seat 3 does not need to be continuously supported by hydraulic oil; when the piston groove 2 needs to be cleaned, the plug bolt 14 is disassembled, then cleaning liquid is introduced into the inside of the oil guide hole 5, the cleaning liquid enters the inside of the piston groove 2, and then is discharged through the cleaning hole 13, so that the inside of the piston groove 2 can be cleaned through high-speed water flow, so as to facilitate repeated use of the hydraulic bolt.

[0032] Those skilled in the art can understand that the features described in various embodiments and / or claims of the present application can be combined or / and combined, even if such combinations or combinations are not explicitly described in the present application. In particular, the features described in various embodiments and / or claims of the present application can be combined and / or combined without departing from the spirit and teachings of the present application. All these combinations and / or combinations fall within the scope of the present application.

Claims

1. A self-locking hydraulic nut, characterized by: Comprising A base (1), a piston slot (2) is opened at the top of the base (1), a connecting seat (3) is arranged inside the piston slot (2); A locking assembly is arranged outside the connecting seat (3); The locking assembly comprises a limiting ring (8), an outer threaded section (10) is arranged outside the connecting seat (3), the limiting ring (8) is movably sleeved outside the connecting seat (3), a first inner threaded section (9) is arranged inside the limiting ring (8), and the limiting ring (8) is connected to the outside of the connecting seat (3) through screw threads.

2. A self-locking hydraulic nut according to claim 1, characterized in that: A piston (4) is arranged at the bottom of the connecting seat (3), the piston (4) is slidably connected to the inside of the piston slot (2), and a sealing assembly is arranged on the piston (4).

3. A self-locking hydraulic nut according to claim 2, characterized in that: The sealing assembly comprises a first sealing ring (7), annular grooves (6) are arranged on the inner and outer sides of the connecting seat (3), the first sealing ring (7) is arranged inside the annular groove (6), and a second sealing ring (15) is sleeved outside the piston (4).

4. A self-locking hydraulic nut according to claim 1, characterized in that: A cleaning hole (13) is opened at the bottom of the base (1), the cleaning hole (13) is communicated with the piston slot (2), and a plugging bolt (14) is connected inside the cleaning hole (13).

5. A self-locking hydraulic nut according to claim 1, characterized in that: A through hole (12) is opened on the base (1), a connecting groove is arranged on the inner side of the connecting seat (3), and a second inner threaded section (11) is arranged inside the connecting groove.

6. A self-locking hydraulic nut according to claim 1, characterized in that: An oil guide hole (5) is opened on the base (1), and the oil guide hole (5) is communicated with the piston slot (2).

7. A self-locking hydraulic nut according to claim 1, characterized in that: A plurality of first insertion grooves (16) are opened on the outside of the limiting ring (8), and a plurality of second insertion grooves (17) are opened on the outside of the base (1).

Images