Hydraulic wrench with pressure relief mechanism
By introducing a pressure relief mechanism and a pressure relief valve into the hydraulic wrench, the problems of one-way valve ejection and pressure accumulation caused by excessive hydraulic wrench pressure are solved, achieving safe and reliable pressure release and protection of the four-way drive shaft, avoiding equipment failure and extending service life.
Patent Information
- Application Number
- CN202423254568.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-28
AI Technical Summary
Existing hydraulic wrenches, when subjected to excessive pressure, may cause the check valve to extend, affecting the installation of hydraulic pipes and potentially leading to pressure buildup inside the equipment, resulting in malfunctions or safety accidents.
Design a hydraulic wrench with a pressure relief mechanism. By setting a pressure relief valve in the hydraulic cylinder, pressure can be released in time to prevent pressure accumulation. At the same time, steel sleeves and graphene pillars are used on the four-sided drive shaft for protection and lubrication.
This effectively avoids equipment failures and safety accidents, and extends the service life of the four-way drive shaft.
Smart Images
Figure CN223573051U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic wrench technical field especially relates to a hydraulic wrench with pressure relief mechanism. BACKGROUND
[0002] The hydraulic wrench is powered by hydraulic pressure, provides large torque output and is used as a tightening tool for installing and disassembling professional bolts. SUMMARY
[0003] The utility model discloses a hydraulic wrench with pressure relief mechanism, which solves the problem of the existing hydraulic wrench that the excessive pressure can cause the one-way valve to be ejected, affect the installation of the hydraulic pipe, and if the pressure in the hydraulic system cannot be released in time, the pressure in the equipment can be accumulated, which can cause equipment failure or safety accidents.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A hydraulic wrench with a pressure relief mechanism, comprising a hydraulic wrench body, an oil pipe rotary joint connected to the top of the hydraulic wrench body through a flange, a hydraulic oil cylinder provided in the hydraulic wrench body, a connector integrally formed at one end of the hydraulic wrench body, a first communication channel and a second communication channel provided in the connector, the first communication channel and the second communication channel being in communication with the hydraulic oil cylinder, and a pressure relief valve provided on the inner wall of the second communication channel.
[0006] Further, the outer surface of the connector is clamped with a reaction arm.
[0007] Further, one side of the hydraulic wrench body is provided with a toothed clamping groove, and a four-square drive shaft is clamped in the toothed clamping groove.
[0008] Further, a steel sleeve is provided in the toothed clamping groove, and the four-square drive shaft is inserted into the steel sleeve.
[0009] Further, a plurality of graphene columns are embedded in the circumferential inner wall of the steel sleeve.
[0010] Further, the graphene columns are in contact with the four-square drive shaft.
[0011] The utility model has the advantages of:
[0012] 1. Through the setting of the pressure relief valve, the pressure in the hydraulic cylinder is discharged from the second communication channel, the pressure relief valve, thereby avoiding the accumulation of pressure in the hydraulic cylinder to avoid triggering equipment failure or safety accidents.
[0013] 2. The steel sleeve prevents the square drive shaft from causing pressure to the tooth-shaped clamping groove, avoids cracks in the tooth-shaped clamping groove, and the graphene column lubricates the square drive shaft, prolonging the service life of the square drive shaft. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 A perspective structural schematic diagram of a hydraulic wrench with a pressure relief mechanism is provided for the utility model;
[0015] Figure 2 A side view structural schematic diagram of a hydraulic wrench with a pressure relief mechanism is provided for the utility model;
[0016] Figure 3 An exploded structural schematic diagram of a hydraulic wrench with a pressure relief mechanism is provided for the utility model;
[0017] Figure 4 A first part sectional view structural schematic diagram of a hydraulic wrench with a pressure relief mechanism is provided for the utility model;
[0018] Figure 5 A second part sectional view structural schematic diagram of a hydraulic wrench with a pressure relief mechanism is provided for the utility model.
[0019] In the figure: 1, hydraulic wrench body; 2, connecting head; 3, oil pipe rotary joint; 4, hydraulic cylinder; 5, first communication channel; 6, second communication channel; 7, pressure relief valve; 8, reaction arm; 9, tooth-shaped clamping groove; 10, steel sleeve; 11, graphene column; 12, square drive shaft. DETAILED DESCRIPTION
[0020] 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, not all the embodiments.
[0021] REFERENCE Figures 1-5The utility model provides a hydraulic wrench with pressure relief mechanism, including hydraulic wrench body 1, the top of hydraulic wrench body 1 is connected with oil pipe swivel joint 3 through flange, be equipped with hydraulic cylinder 4 in hydraulic wrench body 1, and the one end of hydraulic wrench body 1 is integrally formed with connector 2, and be equipped with first communication channel 5 and second communication channel 6 in connector 2, and first communication channel 5 and second communication channel 6 communicate with hydraulic cylinder 4, under the action of hydraulic pump, input hydraulic cylinder 4 in first communication channel 5, then, the piston rod in hydraulic cylinder 4 is pushed under high pressure, generates strong rotation or linear thrust, finally, this moment or pulling force is transmitted to the nut, realizes the control to bolt, and the inner wall of second communication channel 6 is equipped with pressure relief valve 7, and second communication channel 6 communicates with pressure relief valve 7, opens pressure relief valve 7, and the pressure in hydraulic cylinder 4 is discharged from second communication channel 6, pressure relief valve 7, to avoid the accumulation of pressure in hydraulic cylinder 4.
[0022] The outer surface of connector 2 is clamped with reaction arm 8, one side of hydraulic wrench body 1 is equipped with toothed clamping groove 9, and square drive shaft 12 is clamped in toothed clamping groove 9, steel sleeve 10 is equipped in toothed clamping groove 9, and square drive shaft 12 is inserted in steel sleeve 10, to prevent square drive shaft 12 from pressing toothed clamping groove 9 and causing deformation, and a plurality of graphene columns 11 are embedded in the circumferential inner wall of steel sleeve 10, and graphene columns 11 contact square drive shaft 12, to lubricate square drive shaft 12.
[0023] The working principle of the embodiment is as follows: in use, first, connect oil pipe swivel joint 3 with the hydraulic pump, input hydraulic cylinder 4 in first communication channel 5 under the action of the hydraulic pump, then, the piston rod in hydraulic cylinder 4 is pushed under high pressure, generates strong rotation or linear thrust, finally, this moment or pulling force is transmitted to the nut, to realize the control to bolt, then, hydraulic oil is discharged from second communication channel 6.
[0024] When pressure relief, open pressure relief valve 7, and the pressure in hydraulic cylinder 4 is discharged from second communication channel 6, pressure relief valve 7, to avoid the accumulation of pressure in hydraulic cylinder 4.
[0025] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme of the utility model and the utility model concept, equivalent replacement or change, should be covered in the protection scope of the utility model.
Claims
1. A hydraulic wrench with a pressure relief mechanism, comprising a hydraulic wrench body (1), characterized in that, The top of the hydraulic wrench body (1) is connected to an oil pipe rotary joint (3) via a flange. The hydraulic wrench body (1) is equipped with a hydraulic cylinder (4). One end of the hydraulic wrench body (1) is integrally formed with a connector (2). The connector (2) is equipped with a first connecting channel (5) and a second connecting channel (6). The first connecting channel (5) and the second connecting channel (6) are connected to the hydraulic cylinder (4). The inner wall of the second connecting channel (6) is equipped with a pressure relief valve (7).
2. A hydraulic wrench with a pressure relief mechanism according to claim 1, characterized in that, The outer surface of the connector (2) is fitted with a reaction arm (8).
3. A hydraulic wrench with a pressure relief mechanism according to claim 1, characterized in that, The hydraulic wrench body (1) has a toothed groove (9) on one side, and a square drive shaft (12) is engaged in the toothed groove (9).
4. A hydraulic wrench with a pressure relief mechanism according to claim 3, characterized in that, The toothed slot (9) is provided with a steel sleeve (10), and the four-sided drive shaft (12) is inserted into the steel sleeve (10).
5. A hydraulic wrench with a pressure relief mechanism according to claim 4, characterized in that, The inner circumferential wall of the steel sleeve (10) is fitted with a plurality of graphene pillars (11).
6. A hydraulic wrench with a pressure relief mechanism according to claim 5, characterized in that, The graphene column (11) is in contact with the square drive shaft (12).