Mechanical hydraulic flat tongs

Abstract

The utility model discloses mechanical hydraulic flat tongs which comprise a base, a first clamping plate is fixedly assembled on one side of the surface of the base, a sliding way is arranged on the surface of the base, a second clamping plate is installed on the sliding way in a sliding mode, and a hydraulic cylinder is fixedly assembled on the other side of the surface of the base. Through cooperation of the oil injection structure and the pressurizing structure, the oil injection structure is used for injecting oil into the hydraulic cylinder in time, the purpose of supplementing daily maintenance in time is achieved, when the hydraulic cylinder is not tightly clamped, the pressurizing structure is used for pressurizing the interior of the hydraulic cylinder in time, the hydraulic cylinder can be temporarily used, machining of a workpiece is not affected, and after machining is completed, the oil injection structure is used for injecting oil into the hydraulic cylinder. The hydraulic cylinder is checked and maintained in time, clamping operation is prevented from being affected, sufficient hydraulic oil is provided, the hydraulic oil is filtered while pressurization is conducted, normal work of the hydraulic flat tongs is guaranteed, oil pressure in the hydraulic cylinder is sufficient, and the clamping force of the hydraulic flat tongs is kept in a clamping state.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical hydraulic equipment technical field, and the specific field is a mechanical hydraulic flat nose pliers. BACKGROUND

[0002] Mechanical hydraulic flat nose pliers are a kind of fixture that combines mechanical and hydraulic technology, usually used in metal processing, welding, assembly and other industrial applications to fix workpieces or materials, and the hydraulic system can provide greater clamping force than pure mechanical fixtures, which enables mechanical hydraulic flat nose pliers to clamp heavy or difficult-to-fix workpieces, through the hydraulic system, the operator can easily control the clamping and loosening actions, reducing physical labor, the hydraulic system can provide stable clamping force, which helps to maintain the position accuracy of the workpiece, which is particularly important for precision machining, mechanical hydraulic flat nose pliers can be designed in various sizes and shapes to adapt to workpieces of different sizes and shapes, the hydraulic system can be designed with safety valves and other safety devices to prevent overload and accidental injury, the hydraulic system may need regular maintenance and inspection to ensure its normal operation and prolong its service life, during the use of mechanical hydraulic flat nose pliers, the clamping may not be tight, the main reasons are as follows, on the one hand, the problem of the fixture needs to be checked whether there is wear, the wear of the fixture will cause uneven clamping force, which will cause the workpiece to deform or separate from the fixture, the wear of the fixture needs to be repaired and replaced in time, on the other hand, the hydraulic system has a problem, the common problems are as follows, the hydraulic system needs enough hydraulic oil when running, if the hydraulic oil is insufficient or contaminated, the hydraulic flat nose pliers cannot work normally, when the oil pressure inside the hydraulic system is insufficient, the clamping force of the hydraulic flat nose pliers will be weak. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of mechanical hydraulic flat nose pliers to solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of mechanical hydraulic flat nose pliers, including base, the surface one side of the base is fixedly equipped with first clamping plate, the surface of the base is provided with slide, the second clamping plate is slidably installed on the slide, the surface other side of the base is fixedly equipped with hydraulic cylinder, one end of the oil injection pipe is fixedly connected on the side surface of the hydraulic cylinder, valve is installed on the oil injection pipe, oil injection structure is installed on the other end of the oil injection pipe, the other side surface of the hydraulic cylinder is installed with pressurizing structure.

[0005] Preferably, the pressurizing structure comprises a pressurizing chamber, an inner cylinder movably mounted on the inner wall of the pressurizing chamber, a filter screen fixedly assembled on the inner wall of the inner cylinder, a pump body fixedly assembled on the side of the pressurizing chamber, one end of a liquid inlet pipe mounted on the pump body, the other end of the liquid inlet pipe fixedly penetrating through the pressurizing chamber, a through hole formed on the top surface of the inner cylinder for cooperation with the liquid inlet pipe, a one-way valve fixedly assembled on the side of the pressurizing chamber close to the hydraulic cylinder, the one-way valve being communicated with the hydraulic cylinder, a push plate movably inserted on the inner wall of the inner cylinder, an electric push rod fixedly assembled on the side of the push plate, and a support movably mounted on the hydraulic cylinder and mounted on the electric push rod.

[0006] Preferably, the oil injection structure comprises an oil injection tank, an opening formed on the surface of the oil injection tank, an oil cover buckled on the opening, a rubber plug movably inserted in the oil injection tank, a screw rod rotatably assembled on the side of the rubber plug, and the screw rod being screwed through the oil injection tank.

[0007] Preferably, a knob is fixedly assembled on the end of the screw rod.

[0008] Preferably, a filter cartridge is fixedly assembled on the inner part of the oil injection tank close to the oil cover.

[0009] Preferably, the support is movably mounted on the hydraulic cylinder by rivets.

[0010] Compared with the prior art, the mechanical hydraulic flat tongs have the beneficial effects that when workpieces are clamped, the workpieces are placed between the first clamping plate and the second clamping plate through cooperation of the first clamping plate and the second clamping plate, the second clamping plate is moved along the slide through the hydraulic cylinder mounted on the base, and the purpose of clamping the workpieces is achieved; when the hydraulic cylinder is short of oil during daily use, the oil injection structure and the pressurizing structure are cooperated, the oil injection structure is used to timely inject oil into the hydraulic cylinder, the purpose of timely supplementing daily maintenance is achieved; when the hydraulic cylinder is not tightly clamped, the pressurizing structure is used to timely pressurize the hydraulic cylinder, the hydraulic cylinder can be temporarily used, the machining of the workpieces is not affected, the hydraulic cylinder can be checked and repaired after the machining is completed, the reason for insufficient pressure is found out, and timely repair is performed, the operation of clamping is not affected, sufficient hydraulic oil is provided, the hydraulic oil is filtered at the same time of pressurizing, normal work of the hydraulic flat tongs is ensured, the oil pressure in the hydraulic cylinder is sufficient, and the clamping force of the hydraulic flat tongs is kept in a state capable of clamping. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a structural schematic view of the utility model.

[0012] Fig. 2 It is an enlarged sectional view of the pressurizing structure of the utility model.

[0013] Fig. 3The oil injection structure is enlarged and sectioned.

[0014] In the figure: 1, base; 2, first clamping plate; 3, slide; 4, second clamping plate; 5, hydraulic cylinder; 6, oil injection tank; 7, pressurizing bin; 8, oil injection pipe; 9, valve; 10, oil cover; 11, filter cartridge; 12, rubber plug; 13, screw rod; 14, knob; 15, support; 16, electric push rod; 17, push plate; 18, inner cylinder; 19, one-way valve; 20, pump body; 21, liquid inlet pipe; 22, filter screen. DETAILED DESCRIPTION

[0015] 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, rather than 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.

[0016] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a kind of mechanical hydraulic flat mouth tongs, including base 1, the surface side of base 1 is fixedly equipped with first clamping plate 2, the surface of base 1 is provided with slide 3, second clamping plate 4 is slidably installed on slide 3, the other side of the surface of base 1 is fixedly equipped with hydraulic cylinder 5, one end of oil injection pipe 8 is fixedly connected on the side surface of hydraulic cylinder 5, valve 9 is installed on oil injection pipe 8, oil injection structure is installed on the other end of oil injection pipe 8, pressurizing structure is installed on the other side surface of hydraulic cylinder 5.

[0017] When workpiece clamping is carried out, workpiece is placed between first clamping plate 2 and second clamping plate 4, second clamping plate 4 is moved along slide 3 by hydraulic cylinder 5 installed on base 1, the purpose of workpiece clamping is achieved, the specific working principle of hydraulic cylinder 5 is prior art, and excessive description is not made here, when hydraulic cylinder 5 is short of oil in daily use, oil injection structure is used to inject oil into the interior in time, the purpose of timely replenishment of routine maintenance is achieved, when hydraulic cylinder 5 appears not to be clamped tightly, pressurizing structure is used to pressurize in cylinder in time, so that hydraulic cylinder 5 can be temporarily used, and the machining of workpiece is not affected, after machining is completed, hydraulic cylinder 5 is checked and repaired, the reason of insufficient pressure is found out, and timely repair is carried out, so as to avoid affecting clamping operation, provide sufficient hydraulic oil, filter the hydraulic oil while pressurizing, ensure that hydraulic flat mouth tongs work normally, make the oil pressure in the interior of hydraulic cylinder 5 sufficient, and the clamping force of hydraulic flat mouth tongs is kept in the state that can be clamped.

[0018] Specifically, the pressurizing structure comprises a pressurizing chamber 7, an inner cylinder 18 movably mounted on the inner wall of the pressurizing chamber 7, a filter screen 22 fixedly mounted on the inner wall of the inner cylinder 18, a pump body 20 fixedly mounted on the side of the pressurizing chamber 7, one end of a liquid inlet pipe 21 mounted on the pump body 20, the other end of the liquid inlet pipe 21 fixedly penetrating through the pressurizing chamber 7, a through hole for cooperating with the liquid inlet pipe 21 arranged on the top surface of the inner cylinder 18, a one-way valve 19 fixedly mounted on the side of the pressurizing chamber 7 close to the hydraulic cylinder 5, the one-way valve 19 in communication with the hydraulic cylinder 5, a push plate 17 movably inserted into the inner cylinder 18, an electric push rod 16 fixedly mounted on the side of the push plate 17, a support 15 mounted on the electric push rod 16, and the support 15 movably mounted on the hydraulic cylinder 5.

[0019] The pressurizing structure can timely supplement pressure when the pressure is insufficient during normal use of the hydraulic cylinder 5, so as to maintain the use of the hydraulic cylinder 5 in a short time. When the pressure is insufficient, the second clamping plate 4 is not clamped tightly, the inner cylinder 18 stores hydraulic oil, the electric push rod 16 is mounted on the hydraulic cylinder 5 through the support 15, when the pressure is insufficient, the electric push rod 16 is started, the electric push rod 16 is rapidly elongated, the push plate 17 is moved in the inner cylinder 18, the push plate 17 is made of rubber material to avoid oil leakage between the push plate 17 and the inner cylinder 18, after the push plate 17 is moved, the hydraulic oil is filtered through the filter screen 22, and finally enters the hydraulic cylinder 5 through the one-way valve 19. After the electric push rod 16 is elongated, a small amount of hydraulic oil is pushed into the hydraulic cylinder 5, so that the purpose of instantaneous pressurization is achieved, the pressure in the hydraulic cylinder 5 is sufficient, the first clamping plate 2 and the second clamping plate 4 can clamp the workpiece more tightly, when the pump body 20 is short of hydraulic oil in the inner cylinder 18, the external hydraulic oil is driven to flow into the inner cylinder 18 through the through hole in the liquid inlet pipe 21, the inner cylinder 18 and the pressurizing chamber 7 can be connected in a threaded connection mode, the inner part can be conveniently taken down for cleaning, and the filter screen 22 is prevented from being blocked after long-time use.

[0020] Specifically, the oil injection structure comprises an oil injection tank 6, an opening is arranged on the surface of the oil injection tank 6, an oil cover 10 is buckled at the opening position, a rubber plug 12 is movably inserted into the oil injection tank 6, a screw rod 13 is rotatably mounted on the side of the rubber plug 12, and the screw rod 13 is screwed to penetrate through the oil injection tank 6.

[0021] The oil injection structure can inject oil into the hydraulic cylinder 5 at any time during use of the hydraulic cylinder 5, so as to achieve the purpose of timely supplement. The oil injection tank 6 is connected with the oil injection pipe 8, oil is injected into the oil injection tank 6 at the position of the oil cover 10, the oil cover 10 is fixedly mounted on the oil injection tank 6 in a threaded mode, the valve 9 is opened at the same time of oil injection, the screw bolt is rotated, the screw rod 13 pushes the rubber plug 12 to move in the oil injection tank 6 in the process of rotation, the hydraulic oil in the oil injection tank 6 is pushed to move when the rubber plug 12 moves, the hydraulic oil enters the hydraulic cylinder 5 through the oil injection pipe 8 under the action of pressure, and the actual hydraulic oil is timely filled, so that the hydraulic cylinder 5 is more smooth during movement of the second clamping plate 4.

[0022] Specifically, the end of the screw rod 13 is fixedly equipped with a knob 14.

[0023] The knob 14 is fixedly equipped at the end of the screw rod 13, and the contact area between the knob 14 and the screw rod 13 can be increased, facilitating rotation.

[0024] Specifically, the filter cartridge 11 is fixedly equipped at the position close to the oil cover 10 inside the oil injection tank 6.

[0025] The filter cartridge 11 is arranged at the position close to the opening inside the oil injection tank 6, and the hydraulic oil entering the oil injection tank 6 is filtered, avoiding impurities and the like from entering the inside of the oil injection tank 6 and finally entering the hydraulic cylinder 5.

[0026] Specifically, the support 15 is movably installed on the hydraulic cylinder 5 through rivets.

[0027] The support 15 is fixed to the shell of the hydraulic cylinder 5 through rivets, facilitating flexible disassembly, and after disassembly, the inner cylinder 18 can be taken out for cleaning of the filter cartridge 11.

[0028] Working principle: when clamping a workpiece, the workpiece is placed between the first clamping plate 2 and the second clamping plate 4, the second clamping plate 4 is moved along the slide 3 by the hydraulic cylinder 5 installed on the base 1, and the purpose of clamping the workpiece is achieved. During daily use, when the hydraulic cylinder 5 is short of oil, the oil injection structure is used to inject oil into the inside in time, achieving the purpose of timely replenishment of daily maintenance. When the hydraulic cylinder 5 appears to be not clamped tightly, the pressurizing structure is used to pressurize in the cylinder in time, so that the hydraulic cylinder 5 can be temporarily used, without affecting the machining of the workpiece. After machining is completed, the hydraulic cylinder 5 is checked and repaired, the reason for insufficient pressure is found out, and timely repair is performed, avoiding affecting the clamping operation, providing sufficient hydraulic oil, filtering the hydraulic oil while pressurizing, ensuring normal work of the hydraulic tongs, making the oil pressure in the hydraulic cylinder 5 sufficient, and keeping the clamping force of the hydraulic tongs in a clamped state.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical hydraulic tongue and groove pliers comprising a base (1), characterized in that: The surface side of the base (1) is fixedly provided with a first clamping plate (2), the surface of the base (1) is provided with a slide (3), the slide (3) is slidably provided with a second clamping plate (4), the other surface side of the base (1) is fixedly provided with a hydraulic cylinder (5), one end of an oil injection pipe (8) is fixedly connected to the side surface of the hydraulic cylinder (5), a valve (9) is mounted on the oil injection pipe (8), an oil injection structure is mounted on the other end of the oil injection pipe (8), and a pressurizing structure is mounted on the other side surface of the hydraulic cylinder (5).

2. A mechanical hydraulic pipe wrench in accordance with claim 1 wherein: The pressurizing structure comprises a pressurizing bin (7), an inner cylinder (18) is movably mounted on the inner wall of the pressurizing bin (7), a filter screen (22) is fixedly mounted on the inner wall of the inner cylinder (18), a pump body (20) is fixedly mounted on the side surface of the pressurizing bin (7), one end of a liquid inlet pipe (21) is mounted on the pump body (20), the other end of the liquid inlet pipe (21) penetrates through the pressurizing bin (7), a through hole for cooperating with the liquid inlet pipe (21) is formed in the top surface of the inner cylinder (18), a one-way valve (19) is fixedly mounted on the side surface of the pressurizing bin (7) close to the hydraulic cylinder (5), the one-way valve (19) is communicated with the hydraulic cylinder (5), a push plate (17) is movably inserted into the inner wall of the inner cylinder (18), an electric push rod (16) is fixedly mounted on the side surface of the push plate (17), a support (15) is mounted on the electric push rod (16), and the support (15) is movably mounted on the hydraulic cylinder (5).

3. A mechanical hydraulic pipe wrench in accordance with claim 1 wherein: The oil injection structure comprises an oil injection tank (6), an opening is formed in the surface of the oil injection tank (6), an oil cover (10) is buckled at the opening position, a rubber plug (12) is movably inserted into the oil injection tank (6), a screw rod (13) is rotatably mounted on the side surface of the rubber plug (12), and the screw rod (13) penetrates through the oil injection tank (6) in a screwed manner.

4. A mechanical hydraulic pipe wrench in accordance with claim 3 wherein: A knob (14) is fixedly mounted on the end of the screw rod (13).

5. A mechanical hydraulic pipe wrench in accordance with claim 3 wherein: A filter cartridge (11) is fixedly mounted on the inner part of the oil injection tank (6) close to the oil cover (10).

6. A mechanical hydraulic pipe wrench in accordance with claim 2 wherein: The support (15) is movably mounted on the hydraulic cylinder (5) by rivets.

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