A protective device for a metal tube hydraulic press and its control method

Abstract

The present invention relates to a metal pipe hydraulic press protective device and a control method thereof, comprising a hydraulic press body, a water column protective device, a pipe segment protective device and a track, wherein the track is vertically arranged at both ends of the hydraulic press body, the water column protective device is arranged on both sides of the hydraulic press body and moves on the track, the water column protective device is used for protecting the hydraulic press body from high-pressure water columns during pressure test operation, the pipe segment protective device is arranged at the lower end of the top of the hydraulic press body and is used for protecting smaller pipe segments during pressure test operation of the hydraulic press body, the water column protective device can prevent high-speed pipe segments and high-pressure water columns from flying out and injuring people when a metal pipe bursts; the pipe segment protective device can prevent high-speed pipe segments from flying out and injuring people after a metal pipe bursts, and at the same time weaken the damage of the high-speed pipe segments to tempered glass; the protective device is simple and practical, easy to maintain, and easy to promote and use.

Description

Technical Field

[0001] The invention belongs to the technical field of metal pipe pressure protection, in particular to a metal pipe hydraulic press protection device and a control method thereof. Background Art

[0002] During the production process, metal pipes need to undergo a hydraulic pressure test. The test pressure varies depending on the specifications of the metal pipes. If the metal pipes have external defects or internal metallographic inconsistencies, the metal pipes may explode during pressure increase and pressure maintenance. The resulting high-pressure water column and flying high-speed pipe segments are likely to cause casualties among on-site workers.

[0003] At present, hydraulic press pressure protection generally adopts fixed or movable screen-type protective nets. This type of protective net is welded by wire mesh and steel structure frame, installed on the ground or movably installed on both sides of the hydraulic press. It can block some large-sized pipe segments from causing harm to workers, but it cannot guarantee that high-pressure water columns and smaller pipe segments will not cause harm to workers. Therefore, traditional protective devices have the disadvantages of incomplete protection and major safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a metal pipe hydraulic press protective device and a control method thereof to solve the technical problems in the existing technology that traditional protective devices cannot ensure that high-pressure water columns and smaller pipe segments will not cause harm to workers and pose major safety hazards.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] On the one hand, the present invention provides a metal pipe hydraulic press protective device, comprising a hydraulic press body, a water column protective device, a pipe segment protective device and a track, wherein the track is vertically arranged at both ends of the hydraulic press body, the water column protective device is arranged on both sides of the hydraulic press body and moves on the track, the water column protective device is used to protect the hydraulic press body from high-pressure water columns during pressure test operations, and the pipe segment protective device is arranged at the lower end of the top of the hydraulic press body and is used to protect smaller pipe segments during pressure test operations of the hydraulic press body.

[0007] The water column protection device includes a protection truss, a drive assembly and a guide device. The guide device is arranged at both ends of the protection truss. The drive assembly is vertically arranged at both ends of the hydraulic press body and parallel to the track. The two ends of the drive assembly are respectively connected to the upper part of the protection truss and the bottom of the hydraulic press body. The drive assembly is used to drive the protection truss and the guide device to move on the track. A water column protection mechanism is provided on the protection truss. The water column protection mechanism is used to protect the high-pressure water column during the pressure test operation of the hydraulic press body.

[0008] The pipe segment protection device includes a curling mechanism, a curling drive device and a metal mesh. The metal mesh is arranged on the curling mechanism. One end of the curling mechanism is connected to the shaft of the curling drive device. The curling drive device is arranged on the inner walls on both sides of the top of the hydraulic press body. The curling mechanism is a cylindrical structure. One end of the metal mesh is arranged on the curling mechanism of the cylindrical structure. The curling mechanism is rotated by the curling drive device so that the metal mesh is opened or wound around the curling mechanism. The metal mesh is used to protect smaller pipe segments during the pressure test operation of the hydraulic press body.

[0009] Preferably, a magnetic layer is provided at one end of the metal mesh opposite to the curling mechanism, and the magnetic layer is provided with an electromagnetic suction cup, which is arranged at the top of the bottom of the hydraulic press body and opposite to the magnetic layer. When the electromagnetic suction cup is energized, it is magnetically connected to the magnetic layer, so that the metal mesh remains in an open state and is not easily deformed.

[0010] Preferably, the driving assembly includes an articulated seat, a telescopic mechanism and a support base, the articulated seat and the support base are respectively arranged at both ends of the telescopic mechanism, the articulated seat is arranged on the outer wall of the top end of the protective truss, and the support base is arranged on the top end of the base of the hydraulic press body, and the cooperation of the articulated seat, the telescopic mechanism and the support base is used to drive the protective truss and the guide device to move on the track;

[0011] Preferably, the guide device includes a first guide mechanism and a second guide mechanism, the first guide mechanism is a single roller structure, the single roller structure is arranged on the side elevations at both ends of the protective truss, and the wheel body of the single roller structure cooperates with the track relative to the side elevation of the protective truss.

[0012] The second guide mechanism is a symmetrical double roller structure, the double roller structure is provided on the side elevations at both ends of the protective truss, the wheel body of the double roller structure cooperates with the two side elevations of the track adjacent to the side elevations of the protective truss, the axes of the single roller structure and the double roller structure are arranged perpendicularly, and the first guide mechanism and the second guide mechanism are each provided with at least two;

[0013] Preferably, a cleaning device is provided at the top of the hydraulic press body, and the cleaning device includes a fixed base, a slider, a connecting rod and a cleaning mechanism. The fixed base is provided in at least two groups, and the two groups of fixed bases are symmetrically arranged on both sides of the top of the hydraulic press body. The fixed base is an L-shaped structure and a slide rail is provided at the bottom. The slider is a P-shaped structure and a slide groove is provided at the bottom. The slider cooperates with the fixed base, and the two ends of the connecting rod are respectively connected to the top of the symmetrically arranged slider. The cleaning mechanism is sleeved on the connecting rod, and the cleaning mechanism is in contact with the water column protection mechanism.

[0014] A screw rod is connected between the slider and the fixed base, and a compression spring is sleeved on the screw rod. The cleaning mechanism moves synchronously under the drive of the protection truss, thereby performing a cleaning operation on the water column protection mechanism;

[0015] Preferably, the metal mesh is a chain mesh, the diameter of a single chain of the chain mesh is less than or equal to 50 mm, the hole spacing of the chain mesh is less than 30 mm, and the spacing between the metal mesh and the protective truss is greater than 30 mm and less than or equal to 200 mm;

[0016] Preferably, the water column protection mechanism is tempered glass, and the tempered glass is arranged on one side of the protection truss relative to the hydraulic press body or on both sides of the protection truss;

[0017] Preferably, the telescopic mechanism is a mechanical telescopic drive rod or a hydraulic telescopic drive rod.

[0018] On the other hand, the present invention also provides a control method for a metal pipe hydraulic press protective device, the specific steps of which are as follows:

[0019] After the metal tube is loaded, the metal mesh is electrically controlled to descend, and the magnetic layer is energized to generate magnetic force to magnetically connect the electromagnetic chuck to the magnetic layer to ensure that the metal mesh is not easily deformed;

[0020] The protective truss is electrically controlled to descend to the metal pipe pressing operation position through the driving assembly and the guide device, and starts the pressing operation on the metal pipe;

[0021] After the metal pipe pressing operation is completed, the magnetic attraction layer is powered off so that the magnetic force between the electromagnetic suction cup and the magnetic attraction layer disappears, and the metal mesh is wound onto the curling mechanism. At the same time, the protective truss rises to the initial position under the electric control of the drive assembly and the guide device, and the metal pipe is unloaded to enter the next cycle.

[0022] The advantages and positive effects of the present invention are:

[0023] The present invention proposes a metal pipe hydraulic press protective device and a control method thereof, which has the following advantages and effects compared with the prior art:

[0024] 1. The water column protection device can prevent high-speed pipe segments and high-pressure water columns from flying out and injuring people when the metal pipe bursts;

[0025] 2. The pipe segment protection device can prevent high-speed pipe segments from flying out and injuring people after the metal pipe bursts, and at the same time reduce the damage of high-speed pipe segments to tempered glass;

[0026] 3. The cleaning device can provide operators with a clear line of sight;

[0027] 4. The coordination of the water column protection device and the segment protection device can solve the problem of incomplete protection and major safety hazards of the hydraulic press during the pressure test;

[0028] 5. This protective device is simple and practical, easy to maintain and easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall connection structure of the metal pipe hydraulic press protective device of the present invention;

[0030] Figure 2 This is a schematic diagram of the connection structure of the water column protection device, the pipe segment protection device and the cleaning device with the hydraulic press body of the present invention;

[0031] Figure 3 It is a schematic diagram of the connection structure of the water column protection device of the present invention;

[0032] Figure 4 Schematic diagram of the connection structure of the pipe segment protection device of the present invention;

[0033] Figure 5 yes Figure 3 A partial enlarged view of

[0034] Figure 6 It is a schematic diagram of the connection structure between the guide device and the track of the present invention;

[0035] Figure 7 It is a schematic diagram of the connection structure of the cleaning device of the present invention;

[0036] Figure 8 yes Figure 7 Left view of;

[0037] Figure 9 Schematic diagram of the connection structure of the connecting rod and the cleaning mechanism of the present invention;

[0038] Figure 10 It is a schematic diagram of the actual operation of the metal pipe hydraulic press protective device of the present invention.

[0039] Among them: 1. Metal pipe; 2. Hydraulic press; 3. Water column protection device; 4. Segment protection device; 5. Cleaning device; 31. Protection truss; 32. Track; 33. Drive assembly; 34. Tempered glass; 41. Curling mechanism; 42. Curling drive device; 43. Metal mesh; 44. Magnetic layer; 45. Electromagnetic suction cup; 51. Fixed base; 52. Slider; 53. Screw rod; 54. Compression spring; 55. Connecting rod; 56. Cleaning mechanism; 311. First guide mechanism; 312. Second guide mechanism; 331. Articulated seat; 332. Telescopic mechanism; 333. Support base. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings.

[0041] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0042] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which the present invention pertains. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless defined as such herein, will not be interpreted in an idealized or overly formal sense.

[0043] To facilitate understanding of the embodiments of the present invention, several specific embodiments will be further explained below with reference to the accompanying drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0044] The present invention provides a metal pipe hydraulic press protective device, such as Figures 1 to 4 As shown, it includes a hydraulic press body 2, a water column protection device 3, a pipe segment protection device 4 and a track 32. The track 32 is vertically arranged at both ends of the hydraulic press body 2. The water column protection device 3 is arranged on both sides of the hydraulic press body 2 and moves on the track 32. The water column protection device 3 is used to protect the hydraulic press body 2 from high-pressure water columns during pressure test operations. The pipe segment protection device 4 is arranged at the lower end of the top of the hydraulic press body 2 and is used to protect smaller pipe segments during pressure test operations of the hydraulic press body 2.

[0045] The water column protection device 3 includes a protection truss 31, a drive assembly 33 and a guide device. The guide device is arranged at both ends of the protection truss 31. The drive assembly 33 is vertically arranged at both ends of the hydraulic press body 2 and parallel to the track 32. The two ends of the drive assembly 33 are respectively connected to the upper part of the protection truss 31 and the bottom of the hydraulic press body 2. The drive assembly 33 is used to drive the protection truss 31 and the guide device to move on the track 32. A water column protection mechanism is provided on the protection truss 31. The water column protection mechanism is used to protect the high-pressure water column during the pressure test operation of the hydraulic press body 2.

[0046] The pipe segment protection device 4 includes a curling mechanism 41, a curling drive device 42 and a metal mesh 43. The metal mesh 43 is arranged on the curling mechanism 41. One end of the curling mechanism 41 is connected to the axis of the curling drive device 42. The curling drive device 42 is arranged on the inner walls on both sides of the top of the hydraulic press body 2. The curling mechanism 41 is a cylindrical structure. One end of the metal mesh 43 is arranged on the curling mechanism 41 of the cylindrical structure. The curling mechanism 41 is rotated by the curling drive device 42 so that the metal mesh 43 is opened or wrapped around the curling mechanism 41. The metal mesh 43 is used to protect smaller pipe segments during the pressure test operation of the hydraulic press body 2.

[0047] In this embodiment, a magnetic layer 44 is provided at one end of the metal mesh 43 relative to the curling mechanism 41, and the magnetic layer 44 is equipped with an electromagnetic suction cup 45. The electromagnetic suction cup 45 is arranged at the top of the bottom of the hydraulic press body 2 and is arranged opposite to the magnetic layer 44. After the electromagnetic suction cup 45 is energized, it is magnetically connected to the magnetic layer 44, so that the metal mesh 43 remains in an open state and is not easily deformed.

[0048] In this embodiment, if Figure 5 As shown, the driving assembly 33 includes an articulated seat 331, a telescopic mechanism 332 and a support base 333. The articulated seat 331 and the support base 333 are respectively arranged at both ends of the telescopic mechanism 332. The articulated seat 331 is arranged on the outer wall of the top end of the protective truss 31, and the support base 333 is arranged on the top end of the base of the hydraulic press body 2. The cooperation of the articulated seat 331, the telescopic mechanism 332 and the support base 333 is used to drive the protective truss 31 and the guide device to move on the track 32.

[0049] In this embodiment, if Figure 5 and Figure 6As shown, the guide device includes a first guide mechanism 311 and a second guide mechanism 312. The first guide mechanism 311 is a single roller structure, which is arranged on the side elevations at both ends of the protection truss 31. The wheel body of the single roller structure cooperates with the track 32 relative to the side elevations of the protection truss 31.

[0050] The second guide mechanism 312 is a double roller structure that is symmetrical to each other. The double roller structure is arranged on the side facades at both ends of the protective truss 31. The wheel body of the double roller structure cooperates with the two side facades adjacent to the side facades of the track 32 relative to the protective truss 31. The axes of the single roller structure and the double roller structure are arranged vertically. The first guide mechanism 311 and the second guide mechanism 312 are both set to at least two.

[0051] In this embodiment, if Figures 7 to 9 As shown, a cleaning device 5 is provided at the top of the hydraulic press body 2, and the cleaning device 5 includes a fixed base 51, a slider 52, a connecting rod 55 and a cleaning mechanism 56. The fixed base 51 is provided in at least two groups, and the two groups of fixed bases 51 are symmetrically arranged on both sides of the top of the hydraulic press body 2. The fixed base 51 is an L-shaped structure and a slide rail is provided at the bottom. The slider 52 is a P-shaped structure and a slide groove is provided at the bottom. The slider 52 cooperates with the fixed base 51, and the two ends of the connecting rod 55 are respectively connected to the top of the symmetrically arranged slider 52. The cleaning mechanism 56 is sleeved on the connecting rod 55, and the cleaning mechanism 56 is in contact with the water column protection mechanism.

[0052] A screw rod 53 is connected between the slider 52 and the fixed base 51 , and a compression spring 54 is sleeved on the screw rod 53 . The cleaning mechanism 56 moves synchronously under the drive of the protection truss 31 , thereby performing a cleaning operation on the water column protection mechanism.

[0053] In this embodiment, the metal mesh 43 is a chain mesh, the diameter of a single chain of the chain mesh is less than or equal to 50 mm, the hole spacing of the chain mesh is less than 30 mm, and the spacing between the metal mesh 43 and the protective truss 31 is greater than 30 mm and less than or equal to 200 mm.

[0054] In actual operation, when the maximum diameter of a single chain link or the hole spacing is greater than 50 mm, there are smaller explosion fragments that pass through the metal mesh 43, causing greater damage to the water column protection mechanism. When the hole spacing is less than 50 mm, the perspective is weaker, but the water column protection mechanism is not prone to crushing damage. If the hole spacing is less than 30 mm, the metal mesh 43 can be actively wrapped after the pressure test is stable to provide better perspective conditions.

[0055] In this embodiment, the water column protection mechanism is tempered glass, and the tempered glass is arranged on one side of the protection truss 31 relative to the hydraulic press body 2 or on both sides of the protection truss 31 .

[0056] In this embodiment, the telescopic mechanism 332 is a mechanical telescopic drive rod or a hydraulic telescopic drive rod.

[0057] The present invention also provides a control method for a metal pipe hydraulic press protective device, the specific steps of which are as follows:

[0058] After the metal tube 1 is loaded, the metal mesh 43 is electrically controlled to descend, and the magnetic layer 44 is energized to generate magnetic force so that the electromagnetic chuck 45 is magnetically connected to the magnetic layer 44 to ensure that the metal mesh 43 is not easily deformed.

[0059] The protective truss 31 is electrically controlled to descend to the metal pipe 1 pressing operation position through the driving assembly 33 and the guide device, and starts the pressing operation on the metal pipe 1;

[0060] After the pressing operation of the metal tube 1 is completed, the magnetic attraction layer 44 is powered off so that the magnetic force between the electromagnetic suction cup 45 and the magnetic attraction layer 44 disappears, and the metal mesh 43 is wound onto the curling mechanism 41. At the same time, the protective truss 31 rises to the initial position under the electric control of the driving component 33 and the guide device, and the metal tube 1 is unloaded to enter the next cycle.

[0061] Unless otherwise specifically stated, the relative steps, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0062] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems and devices can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0063] In summary, the content of the present invention is not limited to the above-mentioned embodiments. Those skilled in the art can propose other embodiments within the technical guidance of the present invention, but these embodiments are all included in the scope of the present invention.

[0064] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific embodiments. Any other embodiments derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A protective device for a metal pipe hydraulic press, characterized by: It includes a hydraulic press body, a water column protection device, a pipe segment protection device and a track. The track is vertically arranged at both ends of the hydraulic press body. The water column protection device is arranged on both sides of the hydraulic press body and moves on the track. The water column protection device is used to protect the hydraulic press body from high-pressure water columns during pressure test operations. The pipe segment protection device is arranged at the lower end of the top of the hydraulic press body and is used to protect smaller pipe segments during pressure test operations of the hydraulic press body. The water column protection device includes a protection truss, a drive assembly and a guide device, the guide device is arranged at both ends of the protection truss, the drive assembly is vertically arranged at both ends of the hydraulic press body and parallel to the track, the two ends of the drive assembly are respectively connected to the upper part of the protection truss and the bottom of the hydraulic press body, the drive assembly is used to drive the protection truss and the guide device to move on the track, the protection truss is provided with a water column protection mechanism, the water column protection mechanism is used to protect the hydraulic press body from high-pressure water column during the pressure test operation; The pipe segment protection device includes a curling mechanism, a curling drive device and a metal mesh. The metal mesh is arranged on the curling mechanism. One end of the curling mechanism is connected to the shaft of the curling drive device. The curling drive device is arranged on the inner walls on both sides of the top of the hydraulic press body. The curling mechanism is a cylindrical structure. One end of the metal mesh is arranged on the curling mechanism of the cylindrical structure. The curling mechanism is rotated by the curling drive device so that the metal mesh is opened or wound around the curling mechanism. The metal mesh is used to protect smaller pipe segments during the pressure test operation of the hydraulic press body. The metal mesh is provided with a magnetic layer at one end opposite to the curling mechanism, and the magnetic layer is provided with an electromagnetic suction cup. The electromagnetic suction cup is provided at the top of the bottom of the hydraulic press body and is arranged opposite to the magnetic layer. When the electromagnetic suction cup is energized, it is magnetically connected to the magnetic layer, thereby keeping the metal mesh in an open state and not easily deformed. The driving assembly includes an articulated seat, a telescopic mechanism and a support base, wherein the articulated seat and the support base are respectively arranged at both ends of the telescopic mechanism, the articulated seat is arranged on the outer wall of the top end of the protective truss, and the support base is arranged on the top end of the base of the hydraulic press body. The cooperation of the articulated seat, the telescopic mechanism and the support base is used to drive the protective truss and the guide device to move on the track; The guide device includes a first guide mechanism and a second guide mechanism. The first guide mechanism is a single roller structure. The single roller structure is arranged on the side elevations at both ends of the protective truss. The wheel body of the single roller structure cooperates with the track relative to the side elevations of the protective truss. The second guide mechanism is a symmetrical double roller structure, the double roller structure is provided on the side elevations at both ends of the protective truss, the wheel body of the double roller structure cooperates with the two side elevations of the track adjacent to the side elevations of the protective truss, the axes of the single roller structure and the double roller structure are arranged perpendicularly, and the first guide mechanism and the second guide mechanism are each provided with at least two; A cleaning device is provided at the top of the hydraulic press body, and the cleaning device includes a fixed base, a slider, a connecting rod and a cleaning mechanism. The fixed base is provided in at least two groups, and the two groups of fixed bases are symmetrically arranged on both sides of the top of the hydraulic press body. The fixed base is an L-shaped structure and a slide rail is provided at the bottom. The slider is a P-shaped structure and a slide groove is provided at the bottom. The slider cooperates with the fixed base, and the two ends of the connecting rod are respectively connected to the top of the symmetrically arranged slider. The cleaning mechanism is sleeved on the connecting rod, and the cleaning mechanism is in contact with the water column protection mechanism. A screw rod is connected between the slider and the fixed base, and a compression spring is sleeved on the screw rod. The cleaning mechanism moves synchronously under the drive of the protection truss, thereby performing a cleaning operation on the water column protection mechanism.

2. The metal pipe hydraulic press protective device according to claim 1, characterized in that: The metal mesh is a chain mesh, the diameter of a single chain of the chain mesh is less than or equal to 50 mm, the hole spacing of the chain mesh is less than 30 mm, and the spacing between the metal mesh and the protective truss is greater than 30 mm and less than or equal to 200 mm.

3. The metal pipe hydraulic press protective device according to claim 1, characterized in that: The water column protection mechanism is tempered glass, and the tempered glass is arranged on one side of the protection truss relative to the hydraulic press body or on both sides of the protection truss.

4. The metal pipe hydraulic press protective device according to claim 1, characterized in that: The telescopic mechanism is a mechanical telescopic drive rod or a hydraulic telescopic drive rod.

5. A control method for a metal pipe hydraulic press protective device according to claim 1, characterized in that: The specific steps are as follows: After the metal tube is loaded, the metal mesh is electrically controlled to descend, and the magnetic layer is energized to generate magnetic force to magnetically connect the electromagnetic chuck to the magnetic layer to ensure that the metal mesh is not easily deformed; The protective truss is electrically controlled to descend to the metal pipe pressing operation position through the driving assembly and the guide device, and starts the pressing operation on the metal pipe; After the metal pipe pressing operation is completed, the magnetic attraction layer is powered off so that the magnetic force between the electromagnetic suction cup and the magnetic attraction layer disappears, and the metal mesh is wound onto the curling mechanism. At the same time, the protective truss rises to the initial position under the electric control of the drive assembly and the guide device, and the metal pipe is unloaded to enter the next cycle.

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