Hydraulic machine sliding block anti-falling device

Abstract

The utility model relates to the field of hydraulic machine sliding block falling prevention, in particular to a hydraulic machine sliding block falling prevention device. Comprising a hydraulic cylinder body, a locking shaft is slidably connected to the interior of the hydraulic cylinder body, an upper cross beam connecting flange is fixedly connected to the interior of the hydraulic cylinder body, a hydraulic oil inlet is formed in one side of the upper cross beam connecting flange, a hydraulic piston is installed in the hydraulic cylinder body, and a plurality of belleville springs are installed in the hydraulic cylinder body; the lower end of the locking shaft is fixedly connected with a sliding block connecting disc, a locking nut is installed at the lower end of the locking shaft, an inner cone is installed in the hydraulic cylinder body, a top disc is installed at the output end of the hydraulic piston, the section of the inner cone is in a trapezoid shape, and the inner diameter of the inner cone is matched with the diameter of the locking shaft. According to the anti-falling device for the sliding block of the hydraulic machine, the situation that the sliding block falls suddenly when the hydraulic machine is used can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic press slide block anti-falling, in particular to a hydraulic press slide block anti-falling device. Background Art

[0002] A hydraulic press, also known as an oil press, is a piece of mechanical equipment that uses the static pressure of hydraulic oil delivered by an oil pump to process metal, plastic, rubber, powder and other products.

[0003] Hydraulic presses are often used in pressing processes and press forming processes, such as forging, stamping, cold extrusion, straightening, bending, flanging, press fitting, etc. Common hydraulic presses include double-column, four-column or welded frame hydraulic presses, including an upper crossbeam, a workbench, a guide column and a slider disposed between the upper crossbeam and the workbench. The slider can slide up and down along the guide column under the push of the piston rod of the hydraulic cylinder. The slider is fixedly connected to the piston rod. During the operation of the hydraulic press, the connection between the slider and the piston rod must withstand considerable force. During long-term use, the connection between the slider and the piston rod may be at risk of breaking or falling off, thereby causing safety accidents.

[0004] For the sake of economy, existing hydraulic press equipment or users rarely add anti-fall devices, which leads to the slider in the hydraulic press easily falling over automatically when the hydraulic press is in use, thus causing safety accidents from time to time and easily causing casualties. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a hydraulic press slide block anti-falling device.

[0006] In order to solve the above technical problems, the utility model provides a hydraulic press slider anti-falling device, including: a hydraulic cylinder body, a locking shaft is slidably connected to the inside of the hydraulic cylinder body, an upper cross beam connecting flange is fixedly connected to the inside of the hydraulic cylinder body, a hydraulic oil inlet is opened on one side of the upper cross beam connecting flange, a hydraulic piston is installed inside the hydraulic cylinder body, a plurality of disc springs are installed inside the hydraulic cylinder body, the lower end of the locking shaft is fixedly connected to the slider connecting plate, the lower end of the locking shaft is installed with a locking nut, an inner cone is installed inside the hydraulic cylinder body, and a top plate is installed at the output end of the hydraulic piston.

[0007] The effect achieved by the above-mentioned components is: before the hydraulic press slider slides up and down, the hydraulic oil enters the lower end of the hydraulic cylinder piston of the anti-fall device of the technical solution of the present invention from the oil inlet, pushing the piston to drive the top plate to move upward, and the inner cone of the cut moves upward to loosen the clamping locking shaft. At this time, the hydraulic press slider can start to slide up and down. When a hydraulic press oil circuit fault is detected or the connection between the slider and the hydraulic cylinder piston rod fails and falls, the high-pressure oil in the hydraulic cylinder body of the technical solution is depressurized, and under the action of the disc spring, the inner cone of the cut moves downward to clamp the locking shaft, thereby achieving a safety accident prevention effect.

[0008] Preferably, the cross section of the inner cone is trapezoidal, and the inner diameter of the inner cone is matched with the diameter of the locking shaft.

[0009] The effect achieved by the above components is that in order to better hold the locking shaft, the inner hole wall of the cut inner cone can increase the friction force.

[0010] Preferably, the hydraulic oil inlet is "L" shaped.

[0011] Preferably, the upper crossbeam connecting flange is made of stainless steel, and the cross-section of the flange is circular.

[0012] Preferably, the inner diameter of the upper cross beam connecting flange is matched with the diameter of the locking shaft.

[0013] Preferably, the top plate abuts against the inner cone.

[0014] Compared with the related art, the hydraulic press slider anti-falling device provided by the utility model has the following beneficial effects:

[0015] The utility model provides a hydraulic press slide anti-falling device. Before the hydraulic press slide block slides up and down, the hydraulic oil enters the lower end of the hydraulic cylinder piston of the technical solution of the anti-falling device of the present invention from the oil inlet, pushes the piston to drive the top plate to move upward, and the cut inner cone moves upward to loosen the clamped locking shaft. At this time, the hydraulic press slide block can start to slide up and down. When a hydraulic press oil circuit fault is detected or the connection between the slide block and the hydraulic cylinder piston rod fails and falls, the high-pressure oil in the hydraulic cylinder body of the present technical solution is depressurized. Under the action of the disc spring, the cut inner cone moves downward to clamp the locking shaft, thereby achieving a safety accident prevention from falling. In order to better achieve the purpose of clamping the locking shaft, the inner hole wall of the cut inner cone can increase the friction force. By setting the overall structure, the effect of avoiding the slide block from suddenly falling when the hydraulic press is in use is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a hydraulic press slide anti-falling device provided by the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the internal cross section is shown;

[0018] Figure 3 for Figure 2 The side structure schematic diagram shown;

[0019] Figure 4 for Figure 3 An enlarged view of point A is shown.

[0020] Numbers in the figure: 1. Hydraulic cylinder body; 2. Locking shaft; 3. Slider connecting plate; 4. Locking nut; 5. Disc spring; 6. Hydraulic oil inlet; 7. Hydraulic piston; 8. Upper crossbeam connecting flange; 9. Top plate; 10. Inner cone. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0023] See also Figures 1 to 4The utility model provides a hydraulic press slider anti-falling device, comprising: a hydraulic cylinder body 1, a locking shaft 2 is slidably connected inside the hydraulic cylinder body 1, an upper cross beam connecting flange 8 is fixedly connected inside the hydraulic cylinder body 1, a hydraulic oil inlet 6 is opened on one side of the upper cross beam connecting flange 8, a hydraulic piston 7 is installed inside the hydraulic cylinder body 1, a plurality of disc springs 5 ​​are installed inside the hydraulic cylinder body 1, a slider connecting plate 3 is fixedly connected to the lower end of the locking shaft 2, a locking nut 4 is installed at the lower end of the locking shaft 2, an inner cone 10 is installed inside the hydraulic cylinder body 1, and a top plate 9 is installed at the output end of the hydraulic piston 7. Before the hydraulic press slider slides up and down, the hydraulic oil enters the lower end of the hydraulic cylinder piston of the anti-fall device of the technical solution of the present invention from the oil inlet, pushing the piston to drive the top plate 9 to move upward, and the cut inner cone 10 moves upward to release the clamped locking shaft 2. At this time, the hydraulic press slider can start to slide up and down. When a hydraulic press oil circuit failure is detected or the connection between the slider and the hydraulic cylinder piston rod fails and falls, the high-pressure oil in the hydraulic cylinder body 1 in the technical solution is depressurized. Under the action of the disc spring 5, the cut inner cone 10 moves downward to clamp the locking shaft 2, thereby achieving a safety accident prevention effect. The cross-section of the inner cone 10 is trapezoidal, and the inner diameter of the inner cone 10 is matched with the diameter of the locking shaft 2. In order to better achieve the purpose of clamping the locking shaft 2, the inner hole wall of the split inner cone 10 can increase the friction force, the hydraulic oil inlet 6 is "L" shaped, the upper cross beam connecting flange 8 is made of stainless steel, the cross section of the flange is circular, the inner diameter of the upper cross beam connecting flange 8 is matched with the diameter of the locking shaft 2, and the top plate 9 is in contact with the inner cone 10.

[0024] The working principle of a hydraulic press slider anti-falling device provided by the utility model is as follows: the utility model provides a hydraulic press slider anti-falling device. Before the hydraulic press slider slides up and down, the hydraulic oil enters the lower end of the hydraulic cylinder piston of the technical solution anti-falling device of the present invention from the oil inlet, pushing the piston to drive the top plate 9 to move upward, and the split inner cone 10 moves upward to loosen the clamped locking shaft 2. At this time, the hydraulic press slider can start to slide up and down. When a hydraulic press oil circuit failure is detected or the connection between the slider and the hydraulic cylinder piston rod fails and falls, the high-pressure oil in the hydraulic cylinder body 1 in the technical solution is depressurized. Under the action of the disc spring 5, the split inner cone 10 moves downward to clamp the locking shaft 2, thereby achieving a safety accident prevention from falling. In order to better achieve the purpose of clamping the locking shaft 2, the inner hole wall of the split inner cone 10 can increase the friction force. By setting the overall structure, the effect of avoiding the slider from suddenly falling when the hydraulic press is in use is achieved.

[0025] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic press slide anti-fall device, characterized in that: include: A hydraulic cylinder body (1), wherein a locking shaft (2) is slidably connected inside the hydraulic cylinder body (1), an upper crossbeam connecting flange (8) is fixedly connected inside the hydraulic cylinder body (1), a hydraulic oil inlet (6) is provided on one side of the upper crossbeam connecting flange (8), a hydraulic piston (7) is installed inside the hydraulic cylinder body (1), a plurality of disc springs (5) are installed inside the hydraulic cylinder body (1), a slider connecting plate (3) is fixedly connected to the lower end of the locking shaft (2), a locking nut (4) is installed at the lower end of the locking shaft (2), an inner cone (10) is installed inside the hydraulic cylinder body (1), and a top plate (9) is installed at the output end of the hydraulic piston (7).

2. The hydraulic press slide anti-falling device according to claim 1, characterized in that: The cross section of the inner cone (10) is trapezoidal, and the inner diameter of the inner cone (10) is matched with the diameter of the locking shaft (2).

3. The hydraulic press slide anti-falling device according to claim 1, characterized in that: The hydraulic oil inlet (6) is in an "L" shape.

4. The hydraulic press slide anti-falling device according to claim 1, characterized in that: The upper crossbeam connecting flange (8) is specifically made of stainless steel, and the cross section of the flange is circular.

5. The hydraulic press slide anti-falling device according to claim 1, characterized in that: The inner diameter of the upper crossbeam connecting flange (8) is matched with the diameter of the locking shaft (2).

6. The hydraulic press slide anti-falling device according to claim 1, characterized in that: The top plate (9) abuts against the inner cone (10).

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