Frequency conversion special electric box for vibratory hammer

Abstract

The utility model discloses a special frequency conversion electric box for a vibratory hammer, which comprises a box body, an upper box door and a lower box door are arranged on the box body, a bayonet is arranged on the front side wall of the box body, a shielding curtain is arranged on the inner side wall of the upper box door, a reel device and a magnetic strip are arranged on the shielding curtain, and the reel device and the magnetic strip are arranged on the front side wall of the box body. The reel device is movably installed on the inner side wall of the upper box door, a first water baffle is further installed on the inner side wall of the upper box door, the first water baffle is movably connected with the upper box door, the thickness of the first water baffle is matched with that of the bayonet, the first water baffle is made of an elastic material, and the first water baffle can be inserted into the bayonet. Compared with the prior art, the special frequency conversion electric box for the vibratory hammer has the advantages that when the special frequency conversion electric box is maintained in rainy days, the water retaining structure in the box body can block rainwater, maintenance operation can be carried out without building a rainproof shed, electrical apparatus elements in the box body can be effectively protected from being damaged by rainwater, meanwhile, the construction period cannot be delayed, and the construction progress is effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of variable-frequency electric boxes for vibratory hammers, and particularly relates to a special variable-frequency electric box for vibratory hammers. Background Art

[0002] The voltage and current detection of the special variable-frequency electric box for vibratory hammers on the market is incomplete. It is impossible to directly see the three-phase input voltage and the three-phase output current of the motor. When a fault occurs, it cannot be judged. The problem of fixture pressure feedback is inaccurate, and the pressurization reaction lags. After the oil pump and the frequency converter fail, they cannot be linked to protect and stop the machine to avoid the occurrence of operating accidents. The high-order harmonics generated by the operation of the frequency converter will interfere with the mis-tripping of the upper-level leakage protection switch.

[0003] To solve this problem, a programmable controller is added as the central master controller, a time relay, internal intermediate relays and other electrical components in the box to control the on and off of the circuit, and the pressure feedback and fault linkage protection functions are added. And a three-phase voltage and current detection meter and an anti-interference magnetic ring are added to the control circuit to filter out the high-order harmonics generated by the operation of the frequency converter and reduce or avoid the mis-tripping of the upper-level leakage protection switch.

[0004] In actual use, since the special variable-frequency electric box for vibratory hammers needs to be installed at the construction site, when the vibratory hammer works, the ground nearby will also vibrate, resulting in a relatively high probability of failure of the special variable-frequency electric box for vibratory hammers. During the emergency repair or continuous operation during the rush period in rainy days, once the special variable-frequency electric box for vibratory hammers fails and needs to be repaired, it is very inconvenient for the maintenance personnel to hold an umbrella in one hand and repair the numerous electrical components in the box, and the electrical components in the box are easily damaged by being wet by rain. After setting up a rain shelter for repair, the time for setting up and disassembling is long, resulting in a delay in the construction period and causing property losses.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a special variable-frequency electric box for vibratory hammers.

[0006] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a special variable-frequency electric box for vibratory hammers, which can be used to solve the above problems.

[0008] To achieve the above object, a specific embodiment of the present utility model provides a frequency conversion special electric box for a vibration hammer, including a box body. An electrical installation opening and a hydraulic pump installation opening are provided on the box body. An upper box door is installed at the electrical installation opening, and a lower box door is hinged at the hydraulic pump installation opening. A bayonet is provided on the front side wall of the box body. A shielding curtain is installed on the inner side wall of the upper box door. A reel device and a magnetic strip are installed on the shielding curtain. The reel device is movably installed on the inner side wall of the upper box door. A first water baffle is also installed on the inner side wall of the upper box door. The first water baffle is movably connected to the upper box door. The thickness of the first water baffle matches the bayonet. The first water baffle is made of an elastic material and can be inserted into the bayonet.

[0009] In one or more embodiments of the present utility model, a hinge hole is provided on the side wall of the first water baffle, and a connecting column is inserted into the hinge hole on the side wall of the first water baffle.

[0010] In one or more embodiments of the present utility model, the connecting column is L-shaped, and a rotating ball is fixedly connected to the end of the connecting column away from the first water baffle.

[0011] In one or more embodiments of the present utility model, a fixed platform is movably connected to the rotating ball, and the side wall of the fixed platform away from the rotating ball is fixedly connected to the inner wall of the upper box door.

[0012] In one or more embodiments of the present utility model, a ball hole is provided on the fixed platform, the rotating ball is rotatably connected in the ball hole, the rotating ball is made of rubber material, the diameter of the rotating ball is greater than the diameter of the ball hole, and the rotating ball is in interference fit with the ball hole.

[0013] In one or more embodiments of the present utility model, the inside of the first water baffle is hollow, and a second water baffle is slidably connected inside the first water baffle.

[0014] In one or more embodiments of the present utility model, the length of the magnetic strip is equal to the width of the shielding curtain. One end of the shielding curtain is bonded to the side wall of the magnetic strip, and the end of the shielding curtain away from the side wall of the magnetic strip is wound around the reel device.

[0015] In one or more embodiments of the present utility model, a rotating shaft is rotatably connected to the reel device. The rotating shafts are a pair, and the pair of rotating shafts are respectively rotatably connected to the upper and lower end faces of the reel device. The pair of rotating shafts are clamped inside the upper box door.

[0016] In one or more embodiments of the present utility model, a placement groove is further provided on the side wall of the box body where the bayonet is provided. The placement grooves are a pair, and the pair of placement grooves match the pair of rotating shafts.

[0017] In one or more embodiments of the present utility model, the length of the magnetic strip is equal to the width of the electrical installation opening on the box body.

[0018] Compared with the prior art, for the variable-frequency special electric box for a vibrating hammer of the present utility model, when performing maintenance on a rainy day, the water-blocking structure inside the box can block rainwater, and maintenance operations can be carried out without setting up a rain shelter, which can effectively protect the electrical components inside the box from being damaged by rainwater, and at the same time, the construction period will not be delayed, effectively ensuring the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a variable-frequency special electric box for a vibrating hammer in an embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of a first state of a variable-frequency special electric box for a vibrating hammer in an embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of a second state of a variable-frequency special electric box for a vibrating hammer in an embodiment of the present utility model;

[0023] Figure 4 It is a connection schematic diagram of a first water baffle of a variable-frequency special electric box for a vibrating hammer in an embodiment of the present utility model;

[0024] Figure 5 For Figure 4 the structural schematic diagram at position B in;

[0025] Figure 6 It is a connection schematic diagram of a first water baffle and a second water baffle of a variable-frequency special electric box for a vibrating hammer in an embodiment of the present utility model;

[0026] Figure 7 It is a schematic structural diagram of a third state of a variable-frequency special electric box for a vibrating hammer in an embodiment of the present utility model;

[0027] Figure 8 It is a structural schematic diagram at position A;

[0028] Figure 9 It is a connection schematic diagram of a shielding curtain of a variable-frequency special electric box for a vibrating hammer in an embodiment of the present utility model;

[0029] Figure 10 This is the control schematic diagram of a frequency conversion special electric box for a vibration hammer in an embodiment of the present utility model;

[0030] Figure 11 This is the control circuit diagram of a frequency conversion special electric box for a vibration hammer in an embodiment of the present utility model.

[0031] Main reference numerals description:

[0032] 1. Box body; 101. Placing groove; 11. Upper box door; 1101. Bayonet; 12. Lower box door; 2. Shading curtain; 21. Reel device; 212. Rotating shaft; 23. Magnetic strip; 3. First water baffle; 301. Hinge hole; 31. Second water baffle; 4. Fixed platform; 41. Ball hole; 42. Rotating ball; 43. Connecting column. Detailed implementation manners

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] As Figure 1 、 Figure 10 and Figure 11 shown, a frequency conversion special electric box for a vibration hammer in an embodiment of the present utility model includes a box body 1. An electrical installation opening and a hydraulic pump installation opening are provided on the box body 1. A programmable controller is added as a central master controller, an internal time relay, an internal intermediate relay and other electrical components in the electrical installation opening to control the on and off of the circuit, and a three-phase voltage and current detection instrument and an anti-interference magnetic ring are added in the control circuit to filter out the high-order harmonics generated by the operation of the frequency converter and reduce or avoid the malfunction of the upper-level leakage protection switch. An upper box door is hinged at the electrical installation opening, and a lower box door is hinged at the hydraulic pump installation opening.

[0035] Currently, in order to prevent water and dust from entering the box body 1 of the frequency conversion special electric box for a vibration hammer on the market, the peripheries of the upper box door 11 installed at the electrical installation opening and the lower box door 12 installed at the hydraulic pump installation opening are set as flanging shapes to achieve a sealing effect.

[0036] During operation, it is connected to the box body 1 by the control line on the operating platform, and commands are sent to the control electrical components inside the box body 1 to control the hydraulic pump and the frequency converter to work. The frequency converter controls the operation of the hammer head motor, and the hydraulic pump controls the clamp of the vibrating hammer to clamp the pipeline. Due to the limitations of the oil circuit and the circuit, the box body 1 needs to be installed on the ground near the vibrating hammer. When the vibrating hammer is working, because it will vibrate at high frequency, the box body 1 on the ground will be continuously vibrated, resulting in a certain failure rate of the electrical components inside the box body 1. During emergency repairs or rush construction periods, continuous construction operations will be carried out, making the electrical components more prone to failure. Once encountering rainy or snowy weather, when repairing the electrical components inside the box body 1 at the construction site, it takes a long time to set up a rain shelter, and there may also be limitations in the site where it cannot be set up. The maintenance personnel can only hold an umbrella in one hand and check and repair with the other hand, resulting in very inconvenient repair work.

[0037] As Figures 1 to 6 shown, in order to facilitate the repair of the electrical components in the upper part of the box body 1 at the construction site even in rainy days, a first water baffle 3 is rotatably connected to the inner side wall of the upper box door 11. A hinge hole 301 is opened on one side wall of the first water baffle 3, and a connecting column 43 is inserted into the hinge hole 301. The connecting column 43 can rotate in the hinge hole 301. The connecting column 43 is L-shaped, and a rotating ball 42 is bonded to the end of the connecting column 43 away from the first water baffle 3. The rotating ball 42 is rotatably connected to the fixed platform 4, and the side wall of the fixed platform 4 away from the rotating ball 42 is welded to the north side wall of the upper box door 11.

[0038] Specifically, a ball hole 41 is opened on the fixed platform 4. The rotating ball 42 can rotate inside the ball hole 41, and the rotating ball 42 is made of rubber material. The diameter of the rotating ball 42 is larger than the diameter of the ball hole 41. When the rotating ball 42 rotates in the ball hole 41, it is in interference fit with the ball hole 41 and can be positioned in the ball hole 41. The first water baffle 3 connected to the connecting column 43 can rotate around the fixed platform 4, and at the same time, the first water baffle 3 can also rotate around the connecting column 43 through the hinge hole 301.

[0039] Specifically, when repairing the electrical components inside the box body 1 in rainy days, open the upper box door 11, hold one end of the first water baffle 3 and pull it outwards to make the first water baffle 3 parallel to the box body 1, and then rotate the first water baffle 3 to make the first water baffle 3 rotate around the connecting column 43 until the first water baffle 3 is parallel to the ground, which can block the rain.

[0040] Furthermore, rotate the first water baffle 3 by 180 degrees, and it can be erected on the upper panel of (1). In this way, there will be a certain slope with the ground, and the side of the first water baffle 3 close to the box body 1 is higher than the other side of the first water baffle 3, which can make the rainwater falling on the first water baffle 3 flow along the first water baffle 3 into the ground, away from the box body 1, providing better protection for the electrical components inside the box body 1.

[0041] It should be noted that when the rain is heavy, rainwater will leak through the gap between the side wall of the first water baffle 3 and the box body 1.

[0042] To prevent rainwater from leaking through the gap between the side wall of the first water baffle 3 and the box body 1, a bayonet 1101 is provided on the side wall of the box body 1 corresponding to the upper box door 11. When the first water baffle 3 rotates out of the flange of the upper box door 11, the first water baffle 3 is pulled out from the connecting column 43 and inserted into the bayonet 1101 to form an integrated rain-proof structure, which can better prevent rain.

[0043] Preferably, the first water baffle 3 is made of elastic material. When inserted into the bayonet 1101, the side of the first water baffle 3 away from the bayonet 1101 is bent at a certain slope to facilitate the rainwater on the first water baffle 3 to flow to the ground.

[0044] To increase the rain-proof area of the first water baffle 3, the first water baffle 3 is set to be hollow, and a second water baffle 31 is inserted into the first water baffle 3. When the second water baffle 31 is pulled out from the first water baffle 3, the rain-proof area of the first water baffle 3 can be increased. At the same time, in hot weather, the first water baffle 3 can also be opened to play a role in shading, which can effectively protect maintenance personnel from heat stroke due to direct sunlight and avoid damage to the electronic instruments on the box body 1 due to excessive temperature under long-term direct sunlight.

[0045] At the same time, when it is necessary to repair the frequency converter and hydraulic pump at the lower part of the box body 1, open the upper box door 11, remove the first water baffle 3 from the upper box door 11, then close the upper box door 11, and insert the first water baffle 3 into the bayonet 1101 at the lower part of the box body 1, which can also play a role in preventing rain.

[0046] As Figure 1 、 7 、 Figure 8 and Figure 9 shown, a shielding curtain 2 is also installed on the inner wall of the upper box door 11. The shielding curtain 2 is wound around a reel 21, and a pair of rotating shafts 212 are rotatably connected to the reel 21. The pair of rotating shafts 212 are symmetrically installed on the upper and lower end faces of the reel 21. The reel 21 is clamped on the inner flange of the upper box door 11 through the rotating shafts 212. A magnetic strip 23 is also adhered to the end of the shielding curtain 2 away from the reel 21. The length of the magnetic strip 23 is equal to the width of the electrical installation opening provided on the box body 1. A placement groove 101 is provided on the side wall of the box body 1 where the bayonet 1101 is provided. The placement groove 101 is matched with the rotating shaft 212. When the upper box door 11 is closed, the rotating shaft 212 can be clamped in the placement groove 101. At the same time, the shielding curtain 2 wound around the reel 21 can also seal the gap at the hinge between the upper box door 11 and the box body 1.

[0047] Specifically, pull the magnetic strip 23 to pull out the shielding curtain 2 from the reel 21, and adsorb the magnetic strip 23 at one end of the box body 1 away from the hinge with the upper box door 11, so that the shielding curtain 2 can shield the electrical components on the upper part of the box body 1. Close the upper box door 11, and the rotating shaft 212 will enter the placement groove 101. The shielding curtain 2 wound on the reel 21 seals the gap at the hinge between the upper box door 11 and the box body 1, and the pulled-out shielding curtain 2 seals the electrical components on the upper part of the box body 1. In this way, even in bad weather with heavy rain accompanied by strong winds, it is not easy for water to enter the box body 1.

[0048] Preferably, the shielding curtain 2 is made of PVC material. The PVC film has good flexibility, is easy to process and install, is suitable for covering irregular shapes, and at the same time, the PVC film has good transparency, providing good lighting conditions.

[0049] As Figures 7 to 9 As shown, after the electrical components on the upper part of the box body 1 are repaired, they need to be debugged. During debugging, since power needs to be supplied, in the case of high humidity, in order to prevent accidental electric shock, the staff cannot be too close to the box body 1, but still need to clearly see the operation data of the electrical instruments on the upper part of the box body 1. Remove the reel 21 from the inner flange of the upper box door 11, and then fix it in the placement groove 101 through the rotating shaft 212. At this time, pull the magnetic strip 23 and attach the magnetic strip 23 to the inner side wall of the box body 1 away from the reel 21, and the shielding curtain 2 will seal the electrical instruments on the upper part of the box body 1, which can protect the electrical components on the upper part of the box body 1 from being wet by rain. After protecting the electrical components on the box body 1, stay away from the box body 1 and turn on the main power supply, so that the data of the electrical instruments can be observed whether it is normal, and the electrical components on the box body 1 can also be protected.

[0050] During use, when the rainfall is small, open the upper box door 11, hold one end of the first water baffle 3 and pull it outwards to make the first water baffle 3 parallel to the box body 1, and then rotate the first water baffle 3 so that the first water baffle 3 rotates around the connecting column 43 and rotates the first water baffle 3 to be parallel to the ground, then it can block the rain, and the maintenance personnel can stand under the first water baffle 3 to carry out maintenance work.

[0051] When the rainfall is large, pull out the first water baffle 3 from the connecting column 43 and insert it into the bayonet 1101 to form a rain-blocking structure integrated with the box body 1. Then pull out the second water baffle 31 from the first water baffle 3 to increase the rain-blocking area of the first water baffle 3, which can better block the rain and facilitate the maintenance personnel to carry out maintenance.

[0052] When debugging after maintenance, remove the reel 21 from the inside of the upper box door 11 and fix the rotating shaft 212 in the placement groove 101. Pull the magnetic strip 23 so that the magnetic strip 23 fits on the inner side wall of the box body 1 away from the reel 21, and the shielding curtain 2 seals the electrical instruments on the upper part of the box body 1. After the maintenance personnel leave the box body 1 for a certain distance, turn on the main power supply. While protecting the electrical components on the box body 1, it is also possible to observe whether the data of the electrical instruments is normal.

[0053] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed claim.

[0054] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A variable-frequency special electric box for a vibrating hammer, comprising a box body. An electrical installation opening and a hydraulic pump installation opening are formed in the box body. An upper box door is installed at the electrical installation opening, and a lower box door is hinged at the hydraulic pump installation opening. It is characterized in that, A bayonet is provided on the front side wall of the box body. A shielding curtain is installed on the inner side wall of the upper box door. A reel and a magnetic strip are installed on the shielding curtain. The reel is movably installed on the inner side wall of the upper box door. A first water baffle is also installed on the inner side wall of the upper box door. The first water baffle is movably connected to the upper box door. The thickness of the first water baffle matches the bayonet. The first water baffle is made of an elastic material and can be inserted into the bayonet.

2. The frequency conversion dedicated electrical box for a vibratory hammer according to claim 1, characterized in that, A hinge hole is provided on the side wall of the first water baffle, and a connecting column is inserted into the hinge hole on the side wall of the first water baffle.

3. The variable-frequency dedicated electrical box for a vibratory hammer according to claim 2, characterized in that, The connecting column is L-shaped, and a rotating ball is fixedly connected to the end of the connecting column away from the first water baffle.

4. The variable-frequency special electric box for a vibrating hammer according to claim 3, characterized in that, The rotating ball is movably connected to a fixed platform, and the side wall of the fixed platform away from the rotating ball is fixedly connected to the inner wall of the upper box door.

5. The frequency conversion special electric box for a vibrating hammer according to claim 4, characterized in that, A ball hole is provided on the fixed platform, and the rotating ball is rotatably connected in the ball hole. The rotating ball is made of rubber material. The diameter of the rotating ball is greater than the diameter of the ball hole, and the rotating ball is in interference fit with the ball hole.

6. The frequency conversion dedicated electric box for a vibrating hammer according to claim 5, characterized in that, The inside of the first water baffle is hollow, and a second water baffle is slidably connected in the first water baffle.

7. The frequency conversion special electric box for vibration hammer according to claim 1, characterized in that, The length of the magnetic strip is equal to the width of the shielding curtain. One end of the shielding curtain is bonded to the side wall of the magnetic strip, and the end of the shielding curtain away from the side wall of the magnetic strip is wound around the reel.

8. The variable-frequency special electric box for a vibrating hammer according to claim 7, wherein, A rotating shaft is rotatably connected to the reel. There are a pair of rotating shafts, and the pair of rotating shafts are respectively rotatably connected to the upper and lower end faces of the reel. The pair of rotating shafts are clamped inside the upper box door.

9. The variable-frequency dedicated electric box for a vibratory hammer according to claim 8, characterized in that, A placement groove is also provided on the side wall of the box body where the bayonet is provided. There are a pair of placement grooves, and the pair of placement grooves match the pair of rotating shafts.

10. The variable-frequency dedicated electric box for a vibrating hammer according to claim 7, characterized in that, The length of the magnetic strip is equal to the width of the electrical installation opening on the box body.

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