A hydraulic press with compression resistance testing function

Abstract

The present invention provides a hydraulic press with a compression resistance test function, including a frame, and an upper die and a lower die that can be relatively opened and closed and are arranged on the frame; a product tooling for supporting a workpiece is arranged in the upper die, and a pressing mechanism for driving the upper die to rise and fall is arranged on the frame; a pressure sensor is arranged between the pressing mechanism and the upper die, and a sealing plug corresponding to the lower die is also arranged in the upper die, and a water injection pressurization path is arranged in the sealing plug; one end of the water injection pressurization path is connected to a water injection joint arranged on the side of the upper end of the sealing plug, and the other end of the water injection pressurization path passes through the lower end of the sealing plug, and the water injection joint is connected to an external high-pressure water tank. The present invention discloses a hydraulic press that can conveniently perform compression resistance tests on the porcelain bottle body of an insulator.

Description

Technical Field

[0001] The invention relates to the field of production and processing, and in particular to a hydraulic press with a compression resistance testing function. Background Art

[0002] The scientific name of the electric porcelain bottle is insulator. The classification of electric porcelain bottles: pillar porcelain bottles, pin-type porcelain bottles, suspension porcelain bottles, column porcelain bottles, and other high and low voltage electric porcelain bottles. The pin-type insulator is a component used to support or suspend the conductor and form electrical insulation between the pole tower and the conductor. The porcelain parts and cast steel of the pin-type ordinary ceramic insulator are glued together with cement adhesive, and the surface of the porcelain parts is coated with a layer of glaze to improve the insulation performance of the insulator. The insulator should have sufficient insulation strength and mechanical strength. During operation, it must not only withstand the working voltage and overvoltage, but also have sufficient resistance to the erosion of chemical impurities, and be able to adapt to changes in temperature and the influence of the surrounding environment. The porcelain parts of the pin-type ordinary ceramic insulator need to have a certain compressive strength during use to avoid the rupture and damage of the porcelain parts of the ceramic insulator caused by changes in external pressure, causing electrical hazards.

[0003] For example, the prior art; patent application number: CN202020250818.X; patent name: A pin insulator with a built-in reinforced fastening mechanism; discloses a pin insulator with a built-in reinforced fastening mechanism, including a pin insulator body and a cross arm, the surface of the cross arm is provided with a mounting hole, the bottom end of the pin insulator body is inserted into the mounting hole, and a limiting lap ring is sleeved on the bottom rod body of the pin insulator body, a fastening nut is screwed on the bottom rod body of the pin insulator body, and a docking groove is provided on the bottom rod body of the pin insulator body, a fixing plate is provided on the inner wall of the docking groove, a cross bar is provided on the surface of the fixing plate, and the cross bar passes through the movable plate.

[0004] In the prior art, it is necessary to develop a mechanism that can perform explosion-proof and pressure-resistant tests on the porcelain bottle body of an insulator, and can perform convenient pressure-resistant tests on the porcelain bottle body of an insulator. Summary of the invention

[0005] The present invention overcomes the shortcomings of the prior art and provides a hydraulic press capable of conveniently performing a pressure resistance test on a porcelain bottle body of an insulator.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a hydraulic press with a pressure resistance testing function, comprising a frame, and an upper mold and a lower mold that can be opened and closed relatively and are arranged on the frame; a product tooling for supporting a workpiece is arranged in the upper mold, and a downward pressure mechanism for driving the upper mold to rise and fall is arranged on the frame; a pressure sensor is arranged between the downward pressure mechanism and the upper mold, and a sealing plug corresponding to the lower mold is also arranged in the upper mold, and a water injection pressurization path is arranged in the sealing plug; one end of the water injection pressurization path is connected to a water injection joint arranged on the side of the upper end of the sealing plug, and the other end of the water injection pressurization path passes through the lower end of the sealing plug, and the water injection joint is connected to an external high-pressure water tank.

[0007] In a preferred embodiment of the present invention, a lower mold cavity is provided in the lower mold, a lower mold outer cover is provided on the periphery of the lower mold cavity, a boss is provided in the lower mold cavity, the product tooling is fixedly provided on the boss, and a storage cavity for embedding and accommodating the workpiece is provided on the product tooling.

[0008] In a preferred embodiment of the present invention, the lower mold cavity is connected to the high-pressure water tank through a return pipe; and a filter water tank is also provided between the lower mold cavity and the high-pressure water tank.

[0009] In a preferred embodiment of the present invention, an upper mold cavity is provided in the upper mold, an upper mold outer cover is provided on the periphery of the upper mold cavity, and a downwardly protruding sealing plug is provided in the upper mold cavity.

[0010] In a preferred embodiment of the present invention, the pressing mechanism comprises a gas-liquid booster cylinder disposed on a frame, and a push rod of the gas-liquid booster cylinder is drivingly connected to the upper die through a pressure head.

[0011] In a preferred embodiment of the present invention, a plurality of guide rods are further provided on the upper die, and the guide rods are longitudinally movably arranged in the frame.

[0012] In a preferred embodiment of the present invention, a pressure sensor is provided between the gas-liquid booster cylinder and the upper mold.

[0013] The present invention solves the defects existing in the technical background, and the beneficial technical effects of the present invention are:

[0014] The invention discloses a hydraulic press capable of conveniently performing a pressure resistance test on a porcelain bottle body of an insulator.

[0015] First, the workpiece is positioned by supporting the product tooling. The workpiece in the present invention is a ceramic insulator. Water is injected into the porcelain bottle body of the ceramic insulator through the water injection pressurization path in the sealing plug and the water injection joint connected to the water injection pressurization path. The downward pressing mechanism drives the upper mold to press down on the porcelain bottle body of the workpiece to seal the porcelain bottle body, and pressurizes the inside of the porcelain bottle body to detect the limit value of the pressure that the ceramic insulator can withstand.

[0016] Second, the lower mold cavity is connected to the water inlet pipes of the filter water tank and the high-pressure water tank through a reflux pipe to achieve the recycling of waste water and reduce energy consumption.

[0017] Third, a water injection and pressurization path is set in the sealing plug, one end of the water injection and pressurization path is connected to the water injection joint set on the side of the upper end of the sealing plug, and the other end of the water injection and pressurization path passes longitudinally through the lower end of the sealing plug and is connected to the outside, which can realize the functions of convenient water injection and sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 is a side structural schematic diagram of a hydraulic press with a compression resistance testing function in a preferred embodiment of the present invention;

[0020] Figure 2 is a schematic cross-sectional structural diagram of a hydraulic press having a compression resistance testing function in a side view in a preferred embodiment of the present invention;

[0021] Figure 3 1 is a schematic diagram of a top view of a hydraulic press having a compression resistance test function in a preferred embodiment of the present invention;

[0022] The meaning of the reference numerals in the figure; 1-pressing mechanism, 11-upper mold, 111-upper mold cavity, 112-upper mold cover, 21-gas-liquid booster cylinder, 211-push rod, 212-guide rod, 22-pressure head, 23-connecting nut, 24-sensor seat, 26-sealing plug, 261-water injection pressurization path, 27-pressure sensor, 28-water injection joint, 3-base, 31-lower mold, 311-lower mold cavity, 312-lower mold cover, 32-product tooling, 4-movable pressure plate, 5-high-pressure water tank, 51-water pipe, 52-filter water tank, 53-reflux pipe. DETAILED DESCRIPTION

[0023] The present invention will now be further described in detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1~Figure 3 As shown, a hydraulic press with a compression resistance test function includes a frame and a base 3 arranged at the lower part of the frame, a lower die 31 is arranged on the base 3, a lower die cavity 311 is arranged in the lower die 31, a lower die outer cover 312 is arranged on the outer cover of the lower die cavity 311, a boss with an upwardly convex cone-shaped structure is arranged in the lower die cavity 311, a detachable product tool 32 is fixedly arranged on the boss, and a storage cavity for embedding and storing workpieces is arranged on the product tool 32. A reflux pipe 53 is connected to the lower part of the lower die cavity 311, and the storage cavity is connected to the water inlet of the filtered water tank 52 through the reflux pipe 53, and the water outlet of the filtered water tank 52 is connected to the water inlet of the high-pressure water tank 5.

[0026] The upper part of the frame is provided with a pressing mechanism 1, which includes a gas-liquid booster cylinder 21 provided on the frame, the lower end of the push rod 211 of the gas-liquid booster cylinder 21 is driven and connected to a pressure head 22, the lower part of the pressure head 22 is provided with an upper mold 11 facing the lower mold 31, and the upper mold 11 is also provided with four guide rods 212, and the guide rods 212 are longitudinally movably arranged in the frame. The lower part of the upper mold 11 is provided with an upper mold cavity 11 corresponding to the lower mold cavity 311, the outer periphery of the upper mold cavity 11 is provided with an upper mold cover 112, the upper mold cavity 11 is provided with a pressure head 22 driven and connected to the push rod 211 of the gas-liquid booster cylinder 21, and the lower part of the pressure head 22 is provided with a sealing plug 26, which is located in the upper mold cavity 11, protrudes downward, and corresponds to the storage cavity of the product tooling 32. A sensor seat 24 is provided between the pressure head 22 provided on the push rod 211 of the gas-liquid booster cylinder 21 and the upper mold 11, and a pressure sensor 27 is provided on the sensor seat 24 and is embedded between the pressure head 22 and the upper mold 11. The upper mold 11 is connected to the pressure head 22 on the push rod 211 of the gas-liquid booster cylinder 21 through the sensor seat 24, and the model of the pressure sensor 27 is: spoke-type sensor TJH-4B. The upper mold 11 is driven and arranged on the upper part of the frame by the pressing mechanism 1; the upper mold 11 of the pressing mechanism 1 is longitudinally displaced relative to the lower mold 31 to realize the opening and closing operation of the upper mold 11 and the lower mold 31.

[0027] The upper mold 11, the pressure head 22 and the sealing plug 26 can be lifted up and down relative to the product tooling 32. A water injection and pressurization path 261 is arranged in the sealing plug 26. The upper end of the water injection and pressurization path 261 passes through the side surface of the upper part of the sealing plug 26 and is connected to the water injection joint 28. The water injection joint 28 is connected to the water outlet of the external high-pressure water tank 5; the other end of the water injection and pressurization path 261 passes through the lower end of the sealing plug 26 longitudinally, corresponding to the storage cavity in the lower mold 31.

[0028] Working principle of the present invention:

[0029] like Figure 1~Figure 3 As shown, when in use, the workpiece, i.e., the ceramic insulator, is first turned upside down on the product tooling 32, so that the porcelain bottle body of the ceramic insulator is embedded in the storage cavity of the product tooling 32, and the ceramic insulator is supported and limited by the product tooling 32, with the opening of the porcelain bottle body facing directly upwards.

[0030] The high-pressure water tank 5 is driven, and the processing water is introduced into the water injection and pressurization path 261 through the water injection joint 28. At the same time, the downward pressing mechanism 1 is driven to drive the pressure head 22 to move downward, and the porcelain bottle body is injected with water while the sealing plug 26 of the lower mold 31 is pushed against the porcelain bottle body. After the water injection is completed, the sealing plug 26 in the lower mold 31 is also sealed against the porcelain bottle body. Then the water injection and pressurization operation is performed on the porcelain bottle body to test the pressure tolerance limit of the porcelain bottle body and determine whether the ceramic insulator meets the pressure standard. After the complete inspection, lift and evacuate the sealing plug 26 upward to release the ceramic insulator, pour the water in the ceramic insulator into the lower mold cavity 311, and introduce the water into the filter water tank 52 through the reflux pipe 53 for filtration, and then introduce the filtered water into the high-pressure water tank 5 for recycling.

[0031] The above specific implementation methods are specific support for the scheme ideas proposed in the present invention, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or equivalent modifications made on the basis of this technical scheme in accordance with the technical ideas proposed in the present invention still fall within the scope of protection of the technical scheme of the present invention.

Claims

1. A hydraulic press with a compression resistance test function, comprising a frame, and an upper die and a lower die arranged on the frame and capable of opening and closing relative to each other; a product tooling for supporting a workpiece is arranged in the upper die, and a pressing mechanism for driving the upper die to rise and fall is arranged on the frame; a pressure sensor is arranged between the pressing mechanism and the upper die, characterized in that: The upper mold is also provided with a sealing plug corresponding to the lower mold, and a water injection and pressurization path is provided in the sealing plug; one end of the water injection and pressurization path is connected to a water injection joint provided on the side of the upper end of the sealing plug, and the other end of the water injection and pressurization path passes through the lower end of the sealing plug, and the water injection joint is connected to an external high-pressure water tank; The lower mold is provided with a lower mold cavity, the periphery of the lower mold cavity is provided with a lower mold outer cover, the lower mold cavity is provided with a boss, the boss is fixedly provided with the product tooling, and the product tooling is provided with a storage cavity embedded and provided with the workpiece; The lower mold cavity is connected to the high-pressure water tank through a return pipe; and a filter water tank is also provided between the lower mold cavity and the high-pressure water tank; An upper mold cavity is arranged in the upper mold, an upper mold outer cover is arranged on the periphery of the upper mold cavity, and a downwardly protruding sealing plug is arranged in the upper mold cavity; The pressing mechanism comprises a gas-liquid booster cylinder arranged on a frame, and a push rod of the gas-liquid booster cylinder is drivingly connected to the upper die through a pressure head.

2. A hydraulic press with a compression resistance test function according to claim 1, characterized in that: The upper die is also provided with a plurality of guide rods, and the guide rods are longitudinally movably arranged in the frame.

3. A hydraulic press with a compression resistance test function according to claim 2, characterized in that: A pressure sensor is arranged between the gas-liquid booster cylinder and the upper die.

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