Hydraulic machine

Abstract

The utility model provides a hydraulic machine and belongs to the technical field of hydraulic machine structures. According to the hydraulic machine, one end of a main plunger rod is fixedly connected to an upper beam, and the other end of the main plunger rod is located in a main plunger cylinder body; the main plunger cylinder body is located in the sliding block, and the main plunger cylinder body and the sliding block are of an integrated structure. The main plunger cylinder body drives the sliding block to move up and down; due to the fact that the main plunger cylinder body is located in the sliding block, and the main plunger cylinder body and the sliding block are of an integrated structure, compared with the structural form that a sliding block and a main plunger rod are connected in the prior art, the material consumption of the sliding block of the hydraulic machine is less; meanwhile, the main plunger cylinder body moves up and down along the main plunger rod to drive the sliding block to move up and down, and due to the fact that the diameter of the main plunger cylinder body is larger than that of the main plunger rod and the connecting area of the main plunger cylinder body and the sliding block is larger, the main plunger cylinder body drives the sliding block to move up and down more stably, and the moving position is more accurate; the problems that in a traditional hydraulic machine structure in the prior art, a large number of sliding blocks are used, and the movement precision of the sliding blocks needs to be improved are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic press structure technical field, in particular, relate to a hydraulic press. BACKGROUND

[0002] Hydraulic press is a kind of commonly used hydraulic equipment, it is with liquid as working medium, according to Pascal principle is made, for transmitting energy to realize the workpiece pressing, bending, flanging and stretching.Hydraulic press is mainly composed of main machine, main cylinder system and hydraulic control system.

[0003] Main machine is as main workbench, for installing mould to complete workpiece pressing work;Main machine is mainly composed of upper beam, column, base, slider and workbench;Main cylinder system is mainly composed of main plunger cylinder and side piston cylinder.

[0004] The main cylinder of traditional hydraulic press is fixedly installed on the upper beam, the end of the main cylinder piston rod (plunger cylinder rod) is fixedly connected with the slider, the extension and contraction movement of the piston (plunger rod) driven by the main cylinder drives the slider to move along the column, and then the workpiece on the workbench is pressed.The slider is integrally welded with the main plunger cylinder body, one end of the main plunger rod is fixedly connected with the upper beam, and the other end is inserted into the combined body of the plunger cylinder body, the plunger cylinder and the slider welded together, and moves together, and the slider is guided by the column.

[0005] The traditional structure mode needs more material for slider, and the precision of slider movement needs to be further improved. INVENTION CONTENTS

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a hydraulic press for solving the problems of more material for slider and improving the precision of slider movement in the traditional hydraulic press structure in the prior art.

[0007] To achieve the above-mentioned purpose and other related purposes, the utility model provides a hydraulic press, which comprises a main machine, a main cylinder system and a hydraulic control system, the body of the main machine is a whole frame structure, the main machine comprises an upper beam, a column guide part and a steel plate welded workbench arranged from top to bottom, the main cylinder system comprises a main plunger cylinder body, a main plunger rod and a plurality of side piston cylinders, the side piston cylinders are connected with the upper beam and the slider, one end of the main plunger rod is fixedly connected with the upper beam, and the other end of the main plunger rod is located in the main plunger cylinder body;The main plunger cylinder body is located in the slider, and the main plunger cylinder body and the slider are an integral structure;The main plunger cylinder body moves up and down along the main plunger rod, and drives the slider to move up and down along the column guide part.

[0008] Optionally, a plurality of side piston cylinders are symmetrically arranged around the main plunger cylinder body.

[0009] Optionally, the main plunger cylinder is located in the center of the slider.

[0010] Optionally, the main plunger cylinder and the slider are welded as a whole.

[0011] Optionally, the main machine further comprises a column guide component for guiding the movement of the slider.

[0012] Optionally, the column guide component is located on both sides of the slider, and the column guide component connects the upper beam and the workbench, and the upper beam, the column guide component and the workbench are integrally constructed.

[0013] Optionally, the upper beam, the column guide component and the workbench are welded as a whole.

[0014] Optionally, the upper beam is provided with a central through hole, the upper end of the main plunger rod is connected with a liquid filling valve transition block, and the liquid filling valve transition block is connected with the liquid filling valve through the central through hole of the upper beam.

[0015] As described above, the hydraulic machine has at least the following advantages:

[0016] 1. The hydraulic machine is fixedly connected at one end of the main plunger rod to the upper beam, and the other end of the main plunger rod is located in the main plunger cylinder; the main plunger cylinder is located in the slider, and the main plunger cylinder and the slider are of an integral structure; the main plunger cylinder moves up and down along the main plunger rod, thereby driving the slider to move up and down; that is, compared with the prior art, the main plunger cylinder and the main plunger rod are designed to be turned over; because the main plunger cylinder is located in the slider, and the main plunger cylinder and the slider are of an integral structure, compared with the structure in which the slider is connected to the main plunger rod in the prior art, the hydraulic machine uses less material for the slider; at the same time, the main plunger cylinder moves up and down along the main plunger rod, thereby driving the slider to move up and down; compared with the prior art in which the main plunger rod drives the slider to move up and down, because the main plunger cylinder has a larger diameter than the main plunger rod, and has a larger area connected to the slider, the hydraulic machine is more stable in driving the slider to move up and down, and the position during movement is more accurate.

[0017] 2. The hydraulic machine further comprises a plurality of side piston cylinders through the main cylinder system, the side piston cylinders are connected to the upper beam and the slider, and the plurality of side piston cylinders are symmetrically arranged around the main plunger cylinder, thereby improving the working stability of the hydraulic machine slider during up and down movement.

[0018] 3. The hydraulic machine is provided with a column guide component located on both sides of the slider, the column guide component connects the upper beam and the workbench, and the upper beam, the column guide component and the workbench are integrally constructed, thereby improving the stability and reliability of the main machine of the hydraulic machine during work, and saving production materials.

[0019] 4. The hydraulic machine has one main plunger cylinder in the center of the slider, which further improves the stability and accuracy of the slider during operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure shows a schematic diagram of the hydraulic machine of the present application.

[0021] Figure 2 The figure shows a schematic diagram of the main machine of the present application.

[0022] PART NUMBER EXPLANATION

[0023] Top beam 11, slider 12, column guide part 13, workbench 14, main plunger rod 21, main plunger cylinder 22, side piston cylinder 23, liquid filling valve transition block 31. DETAILED DESCRIPTION

[0024] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosed content of the specification.

[0025] Please refer to Figures 1 to 2 It should be noted that the structure, proportion, size, etc. 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 implementation conditions of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content of the present application. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" used in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantial change of the technical content, is also considered as the implementation scope of the present application.

[0026] The following embodiments are only for illustration. The various embodiments can be combined, which are not limited to the content shown in the following single embodiment.

[0027] Please refer to Figure 1The utility model provides a kind of hydraulic machine, same as prior art hydraulic machine is that it includes main machine, main cylinder system and hydraulic control system, the main machine includes upper beam 11, column guide part 13 and workbench 14 being arranged from top to bottom, the main cylinder system includes main plunger cylinder body 22 and main plunger rod 21, compared with prior art difference is that one end of the main plunger rod 21 is fixedly connected on the upper beam 11, another end of the main plunger rod 21 is located inside the main plunger cylinder body 22;The main plunger cylinder body 22 is located inside the slider 12, the main plunger cylinder body 22 and the slider 12 are integrated structure;The main plunger cylinder body 22 moves up and down along the main plunger rod 21, drives the slider 12 to move up and down;That is compared with prior art, main plunger cylinder body 22 and main plunger rod 21 are turned over;Because main plunger cylinder body 22 is located inside slider 12, main plunger cylinder body 22 and slider 12 are integrated structure, compared with the structure form that slider 12 and main plunger rod 21 are connected in prior art, the material of the slider 12 of this hydraulic machine is less;Simultaneously main plunger cylinder body 22 moves up and down along main plunger rod 21, drives slider 12 to move up and down, compared with main plunger rod 21 drives slider 12 to move up and down in prior art, because the diameter of main plunger cylinder body 22 is larger than main plunger rod 21, and the area connected with slider 12 is larger, so the slider 12 driven by main plunger cylinder body 22 of this hydraulic machine moves up and down more stable, and the position when moving is also more accurate;Solve the problem that the structure of traditional hydraulic machine in prior art, the material of slider 12 is more and the movement accuracy of slider 12 needs to be improved.

[0028] Take 2000T hydraulic machine as an example, the effective size of the workbench is 2200x1600, which belongs to large tonnage and small platform hydraulic machine, and the configuration of the main cylinder should be: 2000T piston cylinder, the calculated inner diameter of the cylinder body is Φ1000. In this example, the inner diameter of the main cylinder and the plunger cylinder is Φ850 (1400T) one, and the inner diameter of the piston cylinder is Φ400 / 350 (300T*2) two. The preferred cylinder diameter Φ1000 is changed to Φ850, and the cylinder body plunger rod blank is welded as a whole or in combination (cylinder body machining allowance is about 1.1-1.2 square x cylinder diameter x length allowance), the machining allowance of the hole and the outer circle of the cylinder body and the different shaft allowance are larger, and the machining allowance of the outer diameter of the cylinder bottom and the cylinder head is also larger. The specifications of the machine tools such as the forged press and the steel furnace truck boring are increased, and the processing time is also increased. On the other hand, the guide length of the piston cylinder of the main cylinder with the same diameter is increased by 1-2.5 times (the piston cylinder is guided in full stroke, and the plunger cylinder is only guided in the cylinder port). The increased machining cylinder part is the key to the size geometric accuracy, tolerance accuracy, finish requirement, and machining accuracy such as turning, milling, boring, and honing. In this example, two sets of Φ400 / Φ350 piston cylinders are added, which are located on the middle space of the left and right sides of the four columns in the front and rear directions, and the left and right sizes of the main machine are not increased, which reduces the main cylinder force of 600T and the main plunger cylinder without back pressure. The two cylinders of Φ400 / Φ350 are the most common parts of the hydraulic machine. The total cost of this example and the single piston cylinder structure is reduced by about 15-20%.

[0029] In another embodiment, please refer to Figure 1 , the main cylinder system further comprises a plurality of side piston cylinders 23 connected to the upper beam and the sliding block, and the plurality of side piston cylinders are symmetrically arranged around the main plunger cylinder body. The design of this embodiment improves the stability of the hydraulic machine when the sliding block 12 moves up and down without back pressure of the main plunger cylinder and increases the pressure of 600T.

[0030] In another embodiment, please refer to Figure 1 , the main plunger cylinder body 22 is located at the center of the sliding block 12, which can better ensure the stability and accuracy of the sliding block 12 during operation.

[0031] In another embodiment, please refer to Figure 1 , the main plunger cylinder body 22 and the sliding block 12 are welded as a whole, and the main plunger cylinder body 22 replaces the center part of the sliding block 12 in the prior art, which saves the material of the sliding block 12. The specific welding method is to weld the bottom surface of the main plunger cylinder body 22 and the center of the sliding block 12 as the reference.

[0032] In another embodiment, please refer to Figure 1The host further comprises column guiding components 13 for guiding the movement of the slider 12 to ensure smoothness and accuracy of the slider 12.

[0033] In another embodiment, referring to Figure 1 and Figure 2 The column guiding components 13 are located on both sides of the slider, and the column guiding components 13 are connected to the upper beam 11 and the workbench 14, which are integrally configured. Compared with the column guiding components of the prior art, the design of the host structure of the present embodiment is more stable. Meanwhile, the upper beam 11, the column guiding components 13 and the workbench 14 can be processed into an integrated structure by welding, so that the running accuracy of the hydraulic machine slider 12 and the workbench 14 and the accuracy of the combined type (the upper beam 11, the column, and the workbench 14 are assembled in a split body) are improved by one level.

[0034] In another embodiment, referring to Figure 1 The upper beam 11 is provided with a central through hole, the upper end of the main plunger rod 21 is connected to the liquid filling valve transition block 31, and the central through hole and the liquid filling valve are connected to play the role of rapid downward movement of the slider 12, realize the mutual movement between the main plunger cylinder 22 and the main plunger rod 21, and the common movement of the two side piston cylinders 23, meet the pressing speed of the slider 12, and the single action of the two side piston cylinders 23 meets the return speed of the slider 12.

[0035] In other embodiments, the slider 12 can be first coarsely processed by a horizontal lathe, then welded and combined with other parts of the slider to form a slider blank and annealed, and then processed by a boring and milling machine. Coarse processing is preferably one-time clamping positioning on the same base surface to complete fine processing (including four-corner octahedron and upper and lower planes).

[0036] In summary, the utility model discloses a main plunger rod 21 one end fixed connection is in upper beam 11, and the other end of main plunger rod 21 is located inside main plunger cylinder 22, and main plunger cylinder 22 is located inside slider 12, and main plunger cylinder 22 with slider 12 is integral type structure, and main plunger cylinder 22 moves up and down along main plunger rod 21, and drives slider 12 to move up and down, namely compared with prior art, the design of main plunger cylinder 22 and main plunger rod 21 overturn, because main plunger cylinder 22 is located inside slider 12, and main plunger cylinder 22 and slider 12 are integral type structure, compared with prior art slider 12 and main plunger rod 21 connect the structural form, and the material of the hydraulic machine slider 12 is less, and simultaneously main plunger cylinder 22 moves up and down along main plunger rod 21, and drives slider 12 to move up and down, compared with prior art main plunger rod 21 drives slider 12 to move up and down, because main plunger cylinder 22 is compared with main plunger rod 21 larger diameter, and the area of connection with slider 12 is larger, so the hydraulic machine main plunger cylinder 22 drives slider 12 to move up and down more stable, and the position when moving is also more accurate.

[0037] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A hydraulic machine, comprising a main machine, a main cylinder system and a hydraulic control system, the main machine is a whole frame structure, the main machine comprises an upper beam, a column guide part and a steel plate welded workbench arranged from top to bottom, the main cylinder system comprises a main plunger cylinder, a main plunger rod and a plurality of side piston cylinders, the side piston cylinders are connected with the upper beam and a sliding block, characterized in that: one end of the main plunger rod is fixedly connected with the upper beam, and the other end of the main plunger rod is located inside the main plunger cylinder; the main plunger cylinder is located inside the sliding block, and the main plunger cylinder and the sliding block are an integral structure; the main plunger cylinder moves up and down along the main plunger rod, and drives the sliding block to move up and down along the column guide part.

2. A hydraulic machine according to claim 1, characterized in that: The plurality of side piston cylinders are symmetrically arranged around the main plunger cylinder.

3. A hydraulic machine according to claim 1, characterized in that: The main plunger cylinder is located at the center of the sliding block.

4. The hydraulic machine of claim 1, wherein: The main plunger cylinder and the sliding block are welded as a whole.

5. The hydraulic machine of claim 1, wherein: The main machine further comprises a column guide part for guiding the movement of the sliding block.

6. A hydraulic machine according to claim 5, characterized in that: The column guide part is located on both sides of the sliding block, the column guide part is connected with the upper beam and the workbench, and the upper beam, the column guide part and the workbench are integrally constructed.

7. A hydraulic machine according to claim 6, characterised in that: The upper beam, the column guide part and the workbench are welded as a whole.

8. The hydraulic machine of claim 1, wherein: The upper beam is provided with a center through hole, the upper end of the main plunger rod is connected with a liquid filling valve transition block, and the liquid filling valve transition block is connected with the liquid filling valve through the center through hole of the upper beam.

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