CN211975557U

CN211975557U - Iron roughneck hydraulic system

Info

Publication number: CN211975557U
Application number: CN202020185061.0U
Authority: CN
Inventors: 吴正才; 郭勇
Original assignee: Beijing Relais Electromechanical Equipment Technology Co ltd
Current assignee: Beijing Relais Electromechanical Equipment Technology Co ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2020-11-20
Anticipated expiration: 2030-02-19

Abstract

The utility model discloses an iron roughneck hydraulic system, which comprises an oil tank, wherein one end of the oil tank is connected with a hydraulic pump through an oil pipe, one end of the hydraulic pump is fixedly connected with a check valve, one end of the check valve is connected with an overflow valve, the overflow valve comprises a valve body, the upper end of the valve body is fixedly provided with a valve cover, the left end of the valve cover is provided with an oil outlet, the inside of the valve body is provided with an oil delivery port and an oil discharge port, the oil delivery port is connected with the oil outlet of the check valve, a main valve core is fixedly arranged inside the valve body and at the joint of the oil delivery port and the oil discharge port, the inside of the valve cover is provided with an inner oil discharge port and an outer oil discharge port, the main valve core is communicated with the inner oil discharge port, the oil discharge port is connected with the outer oil discharge port, a pilot valve core, not only wasting resources, but also having too many parts and difficult maintenance.

Description

Iron roughneck hydraulic system

Technical Field

The utility model relates to an oil development drilling equipment technical field, concrete field is iron roughneck hydraulic system.

Background

At present, the oil output of an oil pump of an iron roughneck is oil conveyed by each oil cylinder of the iron roughneck, an overflow valve used as a safety valve of the whole system is arranged at the oil output position of the oil pump, the overflow valve can set a natural pressure firstly, when the pressure of a working system of the iron roughneck exceeds the set pressure of the overflow valve, the overflow valve is opened, the oil pressure of the system is released through the overflow valve, so that the pressure of the system is reduced, and when the pressure of the system is recovered to be normal, the pressure is less than the set safety pressure of the overflow valve. The system is enabled to supply oil normally, so that the safety of the whole hydraulic system of the iron roughneck can be ensured. Under the condition, when a load is not connected, an oil circuit can only return to an oil tank from an overflow valve when a system is started, and when the system is started at zero pressure, the initial pressure of the system is very small and is smaller than the set safety pressure of the overflow valve, the overflow valve cannot be opened, oil sucked out by a pump cannot return to the oil tank, so that the system is blocked and cannot be started.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an iron roughneck hydraulic system to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the iron roughneck hydraulic system comprises an oil tank, one end of the oil tank is connected with a hydraulic pump through an oil pipe, one end of the hydraulic pump is fixedly connected with a check valve, one end of the check valve is connected with an overflow valve, the overflow valve comprises a valve body, the upper end of the valve body is fixedly provided with a valve cover, the left end of the valve cover is provided with an oil outlet, an oil delivery port and an oil discharge port are arranged inside the valve body, the oil delivery port is connected with the oil outlet end of the check valve, a main valve core is fixedly arranged inside the valve body and positioned at the joint of the oil delivery port and the oil discharge port, an inner oil discharge port and an outer oil discharge port are arranged inside the valve cover, the main valve core is communicated with the inner oil discharge port, the oil discharge port is connected with the outer oil discharge port, a pilot valve core is arranged in an inner cavity at the left end of the valve cover, the right end, a first baffle is fixedly arranged in the inner cavity of the first groove, a threaded rod is movably arranged on the first baffle in a penetrating manner, a first pressing plate is fixedly arranged at one end of the threaded rod, a ball valve is fixedly arranged on the left side wall of the first pressing plate, the ball valve is matched with the right end of the pilot valve core for use, a first spring is arranged between the first pressing plate and the first baffle, a nut is fixedly arranged at the right end of the first groove, the threaded rod is matched with the nut for use, a lower V-shaped hoop is fixedly arranged on the lower surface of the inner cavity of the first groove and positioned between the first baffle and the nut, a second groove is arranged on the upper portion of the valve cover and positioned at the upper end of the lower V-shaped hoop, a second pressing plate is arranged in the second groove in a sliding manner, a pull rod is fixedly arranged on the upper end face of the second pressing plate, an upper V-shaped hoop is fixedly arranged on the lower end face of, and a second spring is arranged between the second baffle and the second pressing plate, the pull rod movably penetrates through the second baffle, the oil outlet is connected with an oil cylinder for oil consumption of an iron roughneck, and the oil discharge port is communicated with the oil tank.

Preferably, one end of the threaded rod, which extends out of the nut, is provided with a third baffle.

Preferably, one end of the threaded rod extending out of the nut is fixedly provided with a first handle.

Preferably, a second handle is fixedly arranged at one end of the pull rod extending out of the second baffle.

Preferably, the inner surface of the upper V-shaped hoop is provided with an anti-skid rubber sheet.

Compared with the prior art, the beneficial effects of the utility model are that: iron roughneck hydraulic system, be equipped with first baffle, a spring, a first baffle, the nut, threaded rod and ball valve, it drives the ball valve and leaves the pilot operated valve case to rotate to drive first clamp plate through the threaded rod, make oil flow back to the oil tank through outer discharge port, the contact leakproofness of ball valve and pilot operated valve case is guaranteed to power through first spring, be equipped with V word staple bolt, V word staple bolt down, the second spring, second clamp plate and pull rod, under the effect of second spring through the pull rod, drive V word staple bolt upward movement, leave the threaded rod, the threaded rod can rotate, work as V word staple bolt and V word staple bolt contact down, it is fixed to prevent changeing the threaded rod promptly, an unloading valve of current mode parallel connection has been solved, not only the extravagant resource, the part is too many simultaneously, the problem of maintenance difficulty.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the sectional structure of the valve body of the present invention;

fig. 3 is a partially enlarged schematic view of a portion a in fig. 2 according to the present invention;

fig. 4 is a schematic view of a right-side sectional structure of the second groove of the present invention.

In the figure: 1-oil tank, 2-hydraulic pump, 3-one-way valve, 4-valve body, 5-valve cover, 6-oil delivery port, 7-oil discharge port, 8-main valve core, 9-inner oil discharge port, 10-outer oil discharge port, 11-pilot valve core, 12-first groove, 13-first baffle, 14-threaded rod, 15-first pressing plate, 16-ball valve, 17-first spring, 18-nut, 19-lower V-shaped hoop, 20-second groove, 21-second pressing plate, 22-pull rod, 23-upper V-shaped hoop, 24-second baffle, 25-second spring, 26-oil outlet, 27-oil cylinder, 28-third baffle, 29-first handle and 30-second handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an iron roughneck hydraulic system, please refer to fig. 1, which includes an oil tank 1, one end of the oil tank 1 is connected with a hydraulic pump 2 through an oil pipe, one end of the hydraulic pump 2 is fixedly connected with a check valve 3, one end of the check valve 3 is connected with an overflow valve, oil is transported into the system through the check valve 3, only oil can be output but not returned, oil is returned through the overflow valve, please refer to fig. 2, the overflow valve includes a valve body 4, a valve cover 5 is fixedly installed at the upper end of the valve body 4, an oil outlet 26 is arranged at the left end of the valve cover 5, an oil transportation port 6 and an oil discharge port 7 are arranged inside the valve body 4, the oil transportation port 6 is connected with the oil outlet end of the check valve 3, a main valve core 8 is fixedly arranged inside the valve body 4 and at the joint of the oil transportation port 6 and the oil discharge port 7, oil is returned and, the main valve core 8 is communicated with the inner oil discharge port 9, when the pressure of the oil pressure is greater than the pressure set by the overflow valve, the oil flows back into the oil tank 1 through the inner oil discharge port 9, when the system is started at zero pressure, the initial pressure of the system is very small and is less than the safety pressure set by the overflow valve, the oil flows back into the oil tank 1 from the outer oil discharge port 10, the oil discharge port 7 is connected with the outer oil discharge port 10, the inner cavity of the left end of the valve cover 5 is provided with the pilot valve core 11, the right end of the pilot valve core 11 is communicated with the inner oil discharge port 9, the left end of the pilot valve core 11 is communicated with the oil outlet 26, referring to fig. 3 and 4, the right end of the inner cavity of the valve cover 5 is provided with the first groove 12, the inner cavity of the first groove 12 is fixedly provided with the first baffle 13, the first baffle 13 is movably provided with the threaded rod 14 in a penetrating manner, the ball valve 16 is matched with the right end of the pilot valve core 11 for use, one end of the pilot valve core 11 is blocked by the ball valve 16, return oil is prevented from flowing back from the outer oil discharge port 10, a first spring 17 is arranged between the first pressing plate 15 and the first baffle 13, the ball valve 16 is fixedly connected with the pilot valve core 11 through the force of the first spring 17, a nut 18 is fixedly arranged at the right end of the first groove 12, the threaded rod 14 is matched with the nut 18 for use, the threaded rod 14 is connected with the nut 18 through threads to form a self-locking phenomenon, a lower V-shaped hoop 19 is fixedly arranged on the lower surface of the inner cavity of the first groove 12 and between the first baffle 13 and the nut 18, the threaded rod 14 is prevented from rotating and fixed through the lower V-shaped hoop 19 and an upper V-shaped hoop 23, a second groove 20 is arranged on the upper portion of the valve cover 5 and at the upper end of the lower V-shaped hoop 19, and a second pressing plate, the upper end face of second clamp plate 21 is fixed and is equipped with pull rod 22, the lower terminal surface fixed mounting of second clamp plate 21 has last V word staple bolt 23, the upper end fixed mounting of second recess 20 has second baffle 24, be equipped with second spring 25 between second baffle 24 and the second clamp plate 21, the effect of second spring 25 is that V word staple bolt 23 can the up-and-down motion in the assurance to the realization is to the rotation of threaded rod 14 and prevent changeing fixed effect, pull rod 22 activity runs through second baffle 24, the hydro-cylinder 27 of each oil of iron roughneck is connected to oil-out 26, oil discharge opening 7 and oil tank 1 intercommunication.

Specifically, the end of the threaded rod 14 extending out of the nut 18 is provided with a third baffle 28, so that the first spring 17 is prevented from being damaged due to the fact that the threaded rod 14 is excessively adjusted.

Specifically, a first handle 29 is fixedly arranged at one end of the threaded rod 14 extending out of the nut 18, so that the threaded rod 14 is convenient to operate.

Specifically, a second handle 30 is fixedly arranged at one end of the pull rod 22 extending out of the second baffle 24, so that the pull rod 22 is convenient to operate.

Specifically, the inner surface of going up V word staple bolt 23 is equipped with anti-skidding rubber piece, prevents that threaded rod 14 from automatic rotation.

The working principle is as follows: the utility model discloses an iron roughneck hydraulic system, hydraulic system is normal during operation, normally pass through oil delivery 6 and check valve 3, carry out the oil transportation to the hydro-cylinder 27 of each oil consumption of iron roughneck through oil-out 26, when iron roughneck operating system pressure surpassed the settlement pressure of overflow valve, main valve core 8 of overflow valve will be opened, oil flows back inside 1 of oil tank through oil-discharging port 7, the system oil pressure passes through the overflow valve and the pressure release, thereby lowering system's pressure, system pressure is zero this moment, when the system starts, upwards operating pull rod 22, it compresses second spring 25 to drive second clamp plate 21 upward movement, V word staple bolt 23 upward movement in the drive simultaneously, leave threaded rod 14, operating threaded rod 14, drive first clamp plate 15 right side movement, drive ball valve 16 and leave leading case 11, oil just can be through outer discharge port 10 and return oil tank 1 promptly.

This achieves that the hydraulic system can be activated alone without connecting mechanical parts. Under such condition, can be alone to hydraulic system start-up, made things convenient for the debugging and the maintenance to hydraulic power unit.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Iron roughneck hydraulic system, including oil tank (1), its characterized in that: one end of the oil tank (1) is connected with a hydraulic pump (2) through an oil pipe, one end of the hydraulic pump (2) is fixedly connected with a check valve (3), one end of the check valve (3) is connected with an overflow valve, the overflow valve comprises a valve body (4), a valve cover (5) is fixedly mounted at the upper end of the valve body (4), an oil outlet (26) is formed in the left end of the valve cover (5), an oil delivery port (6) and an oil discharge port (7) are arranged inside the valve body (4), the oil delivery port (6) is connected with the oil outlet end of the check valve (3), a main valve core (8) is fixedly arranged at the joint of the oil delivery port (6) and the oil discharge port (7) inside the valve body (4), an inner oil discharge port (9) and an outer oil discharge port (10) are arranged inside the valve cover (5), the main valve core (8) is communicated with the inner oil discharge port (9), and the oil, the left end inner cavity of the valve cover (5) is provided with a pilot valve core (11), the right end of the pilot valve core (11) is communicated with an inner oil discharge port (9), the left end of the pilot valve core (11) is communicated with an oil discharge port (26), the right end of the inner cavity of the valve cover (5) is provided with a first groove (12), a first baffle (13) is fixedly arranged in the inner cavity of the first groove (12), a threaded rod (14) is movably arranged on the first baffle (13) in a penetrating mode, one end of the threaded rod (14) is fixedly provided with a first pressing plate (15), the left side wall of the first pressing plate (15) is fixedly provided with a ball valve (16), the ball valve (16) is matched with the right end of the pilot valve core (11) for use, a first spring (17) is arranged between the first pressing plate (15) and the first baffle (13), and the right end of the first groove (12) is fixedly provided with, the threaded rod (14) and the nut (18) are matched for use, a lower V-shaped hoop (19) is fixedly arranged on the lower surface of an inner cavity of the first groove (12) and positioned between the first baffle (13) and the nut (18), a second groove (20) is arranged on the valve cover (5) and positioned at the upper end of the lower V-shaped hoop (19), a second pressing plate (21) is arranged in the second groove (20) in a sliding manner, a pull rod (22) is fixedly arranged on the upper end face of the second pressing plate (21), an upper V-shaped hoop (23) is fixedly arranged on the lower end face of the second pressing plate (21), a second baffle (24) is fixedly arranged on the upper end of the second groove (20), a second spring (25) is arranged between the second baffle (24) and the second pressing plate (21), the pull rod (22) movably penetrates through the second baffle (24), and the oil outlet (26) is connected with an oil cylinder (27) for each oil for iron roughneck, the oil discharge port (7) is communicated with the oil tank (1).

2. The iron roughneck hydraulic system of claim 1, wherein: and a third baffle plate (28) is arranged at one end of the threaded rod (14) extending out of the nut (18).

3. The iron roughneck hydraulic system of claim 1, wherein: one end of the threaded rod (14) extending out of the nut (18) is fixedly provided with a first handle (29).

4. The iron roughneck hydraulic system of claim 1, wherein: and a second handle (30) is fixedly arranged at one end of the pull rod (22) extending out of the second baffle (24).

5. The iron roughneck hydraulic system of claim 1, wherein: the inner surface of the upper V-shaped hoop (23) is provided with an anti-skid rubber sheet.