JP2018100567A - Concrete construction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete construction device which reduces working staffs required, and also provides good workability.SOLUTION: A vibrator device 1 is provided with a vibrator 3 having a motor 5 and an eccentric weight 7 driven by the motor 5, a power supply device 9 having a battery 11 preserving power to be supplied to the motor 5, a power cord 15 which connects the power supply device 9 and the vibrator 3 to transfer power from the power supply device 9 to the motor 5, and a frame sack 21 which holds the power supply device 9 and is able to be worn by an installation worker.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a concrete construction apparatus.

  Conventionally, at the time of concrete construction, a process of compacting the placed concrete with a vibrator has been performed (for example, see Patent Documents 1 and 2 below). In the device as described in Patent Document 1, generally, a vibrating body is connected to a power supply device via a long power cord, and compaction work is performed while moving the vibrating body by drawing the power cord at a concrete construction site. Is done. The apparatus of Patent Document 2 connects a vibrating body to an engine carried by an operator via a hose, and transmits the rotation of the engine to the vibrating body.

Japanese Patent No. 3419708 U.S. Pat.No. 5,716,131

  However, the apparatus described in Patent Document 1 requires a person to run a power cord connected to the vibrating body from the power supply apparatus, and there is a problem that the number of workers increases. On the other hand, in the apparatus of Patent Document 2, compaction work can be performed by one worker. However, since the rotation of the engine is transmitted to the vibrating body by a flexible shaft built in the hose, the hose is heavy and difficult to bend, and the vibration of the hose is large. Further, smoke, noise and exhaust heat generated from the engine may interfere with the work. Therefore, the burden on the operator is increased, and the workability is not necessarily good.

  In view of the problems as described above, it is an object of the present invention to provide a concrete construction apparatus that reduces work personnel and has good workability.

  A concrete construction apparatus according to the present invention connects a vibration body having a motor and a weight driven by the motor, a power supply unit having a battery that holds power supplied to the motor, a power supply unit, and the vibration body. A power cord that transmits power from the power supply unit to the motor, and a holding attachment that holds the power supply unit and can be worn by a construction worker.

  Moreover, you may make it a holding | maintenance mounting tool change a height of the position holding the component apparatus of an electric power supply part with respect to a construction worker.

  The holding attachment may include a winding mechanism that winds the power cord. Further, the power cord may have a low-rigidity part that is easier to bend than other parts. The power supply unit may include an inverter that converts a direct current from the battery into an alternating current and supplies the alternating current to the motor. The power supply unit may include a plurality of batteries. The vibrating body motor may be a direct current motor that can be driven by a direct current.

  According to the present invention, it is possible to provide a concrete construction apparatus that reduces work personnel and has good workability.

FIG. 1 is a block diagram illustrating a system configuration of a vibrator device 1 according to the first embodiment. FIG. 2 is a diagram illustrating an example of a usage pattern of the vibrator device. FIG. 3 is a perspective view showing a physical configuration of the vibrator device. FIG. 4A is a front view showing a power supply device and a frame zack described later, FIG. 4B is a rear view thereof, and FIGS. 4C and 4D are side views thereof. It is. FIG. 5A is a perspective view of the vibrator device according to the second embodiment as viewed from the front side, and FIG. 5B is a perspective view of the vibrator device according to the second embodiment as viewed from the back side. FIG. 6A is a perspective view of the vibrator device according to the third embodiment as viewed from the front side, and FIG. 6B is a perspective view of the vibrator device according to the third embodiment as viewed from the back side.

  Hereinafter, embodiments of a concrete construction apparatus according to the present invention will be described with reference to the drawings. The concrete construction device of each embodiment described below is a vibrator device that inserts a vibrating body into concrete after placing and compacts the concrete.

(First embodiment)
FIG. 1 is a block diagram showing a system configuration of a vibrator device 1 according to the present embodiment. As shown in FIG. 1, the vibrator device 1 includes a vibrating body 3 that is inserted into concrete and vibrates, a power supply device 9 (power supply unit) that supplies power to the vibrating body 3, and the power from the power supply device 9. And an electric power cord 15 that is transmitted to the vibrating body 3.

  The vibrating body 3 has a motor 5 and an eccentric weight 7 that is rotated by the motor. The motor 5 is an AC motor that operates with an alternating current. The eccentric weight 7 is eccentrically attached to the rotating shaft of the motor 5. The motor 5 and the eccentric weight 7 are accommodated in a housing 19 (see FIG. 3) of the vibrating body 3. When the motor 5 rotates in the housing 19 and the eccentric weight 7 rotates, the vibrating body 3 vibrates.

  The power supply device 9 that supplies power to the motor 5 includes a plurality of (two in this embodiment) batteries 11 (batteries) and an inverter 13. The battery 11 stores and holds electric power supplied to the motor 5. As the battery 11, for example, a lithium ion battery or a fuel cell can be employed.

  The inverter 13 is an inverter capable of DC input. The inverter 13 converts a direct current output from the battery 11 into an alternating current (high frequency current) having an appropriate frequency and outputs the alternating current to the motor 5. Since there are a plurality of batteries 11, a plurality of current supply systems from the battery 11 to the inverter 13 can be provided, and a system backup function is realized. The alternating current output from the inverter 13 is transmitted to the motor 5 through the power cord 15. Note that the inverter 13 is not limited to a complete sine wave inverter, and may be a pseudo sine wave inverter or a rectangular wave inverter as long as the motor 5 is compatible.

  Next, the physical configuration of the vibrator device 1 will be described with reference to FIGS. FIG. 2 is a diagram illustrating an example of a usage pattern of the vibrator device 1. FIG. 3 is a perspective view showing a physical configuration of the vibrator device 1. 4 (a) is a front view showing the power supply device 9 and a frame zack 21 described later, FIG. 4 (b) is a rear view thereof, and FIGS. 4 (c) and 4 (d) are views thereof. It is a side view.

  The vibrator device 1 is used in a form as shown in FIG. 2, for example. That is, the compacting operator Z (construction operator) bears the power supply device 9 via the frame zack 21 described later. Then, the operator Z holds the power cord 15 drawn out from the power supply device 9 and moves the vibrator 3 provided at the tip of the power cord 15 or inserts it into the concrete after placing. Perform the operation. In the following description, words such as “right” and “left” correspond to the left and right as viewed from the operator Z in the above-described usage mode.

  As shown in FIGS. 3 and 4, the vibrator device 1 includes a vibrating body 3, a power supply device 9, and a flexible power cord 15 that connects the vibrating body 3 and the power supply device 9. Moreover, the vibrator device 1 includes a frame zack 21 (holding attachment) that can hold the power supply device 9 and can be worn by the operator Z.

  As described above, the vibrating body 3 includes the housing 19, the motor 5 and the eccentric weight 7 housed in the housing 19. The vibrating body 3 has a circular cross section. For example, the vibrator device 1 is used for construction of an RC housing of a civil engineering structure, and the diameter of the vibrating body 3 is, for example, about 40 to 50 mm. The vibrating body 3 vibrates at a frequency (for example, about 240 Hz) suitable for compacting concrete.

  The power supply device 9 has two L-shaped batteries 11 that are arranged symmetrically and an inverter 13 that is sandwiched between the upper parts of the batteries 11. Presents. The power supply device 9 has a weight of about 10 kg, for example.

  The power cord 15 connects the power supply device 9 and the vibrating body 3. The power cord 15 has, for example, a structure having a conducting wire (not shown) that carries an alternating current from the inverter 13 and a covering material (not shown) that covers the conducting wire. The power cord 15 is drawn from the right side surface of the power supply device 9, but for example, a connector for the power cord 15 may be provided on the left side surface side of the power supply device 9 so that the power cord 15 can be pulled out arbitrarily. Of the power cord 15, the root portion connected to the power supply device 9 is a low-rigidity portion 15a that is easier to bend than the other portion 15b. The low-rigidity portion 15a has, for example, a curled cord structure and is more flexible than the other portion 15b and can be easily bent.

  Such a low-rigidity portion 15 a is not limited to the root portion connected to the power supply device 9, and may be provided in the middle portion of the power cord 15. Further, the low-rigidity portion 15a is not limited to a curled cord structure, and various forms can be adopted as long as the rigidity is lower than other portions of the power cord 15. For example, as the low-rigidity portion 15a, a power cord having a lower rigidity by making the covering material thinner than the other portions 15b may be employed. In particular, when the low-rigidity portion 15a is on the side close to the power supply device 9, there is a low possibility that the low-rigidity portion 15a is inserted into the concrete, so there is a problem even when the covering material of the low-rigidity portion 15a is thin. Hard to occur.

  The power cord 15 is electrically connected to the inverter 13 via a wiring (not shown) routed in the power supply device 9. In order to be able to freely change the length of the power cord 15 drawn out from the power supply device 9, for example, the power supply device 9 may be provided with a winding device 29 (winding mechanism) for the power cord 15. Thereby, the length of the power cord 15 drawn out from the power supply device 9 can be adjusted to a length suitable for work. Moreover, in the example of FIG.2 and FIG.3, although the electric power cord 15 from the power supply device 9 is pulled out to the operator's Z right direction, it is not limited to this. That is, connectors (not shown) of the power cord 15 may be provided on both the left and right sides of the power supply device 9 so that the direction in which the power cord 15 is pulled out can be selected according to the dominant hand of the operator Z.

  The power supply device 9 is provided with an operation panel 35. The operation panel 35 includes, for example, an ON / OFF switch for turning on / off the vibration of the vibrating body 3. The operation panel 35 may include a frequency adjustment switch for changing the frequency of the alternating current sent from the inverter 13 to the vibrating body 3. According to this configuration, the operator Z can perform operations for turning vibration on and off and adjusting the vibration frequency. In the example of FIG. 3, the operation panel 35 is fixed to the right side surface of the power supply device 9. However, the operation panel 35 is connected to the power supply device 9 via a cord having a curled cord structure, for example, and is removable from the power supply device 9. There may be. In this case, the operator Z can operate the operation panel 35 at hand while carrying the frame backpack 21 on the back. The operation panel 35 may be attached to a shoulder strap 27 described later. Further, the operation panel 35 may be a cordless remote control type. In this case, the operation panel 35 can be operated without any trouble due to the cord.

  For example, in the device of Patent Document 1, there are many cases where there is an ON / OFF switch at a position away from the operator, and the ON / OFF timing may be delayed by a switch operation by a person other than the operator. is there. On the other hand, in the vibrator device 1, the operator Z can easily operate the operation panel 35 of the power supply device 9, and the operator Z can control the ON / OFF timing of compaction. Therefore, by performing the ON / OFF operation at an appropriate timing, for example, it can be avoided that the concrete is excessively compacted, and the concrete can be compacted in an appropriate compaction time.

  Note that wirings that electrically connect electrical components such as the two batteries 11, the inverter 13, the power cord 15, and the operation panel 35 are appropriately constructed in the power supply device 9.

  As shown in FIG. 4, the frame zack 21 has a frame 23 on which the power supply device 9 is mounted and held, and two shoulder straps 27 attached to the frame 23. The frame 23 is made of, for example, a metal pipe. The operator Z carries the frame zack 21 and the power supply device 9 so that the shoulder straps 27 are hung on both shoulders, and the use form of the vibrator device 1 as shown in FIG. 2 becomes possible as described above.

  In general, the burden when a person carries a heavy load varies depending on the height position of the heavy load relative to the person. For example, if a heavy load carried by a person is at an appropriate height with respect to the person, the position of the center of gravity of the heavy load is close to that of the person, and it is considered that the burden on the person is reduced. Based on such knowledge, the frame zack 21 has a mechanism that can change the height positions of the battery 11 and the inverter 13 with respect to the worker Z.

  Specifically, for example, the power supply device 9 is fixed to the frame backpack 21 via a predetermined mounting bracket (not shown). By changing the vertical position of the mounting bracket, the mounting height of the power supply device 9 with respect to the frame backpack 21 can be changed. For example, when the mounting bracket is bolted to the frame zack 21, the mounting height of the power supply device 9 can be changed by a configuration in which a plurality of bolt holes are prepared in the vertical direction on the frame zack 21 side. become. Note that the mounting height of the frame zack 21 may be changed for each component device of the power supply device 9 such as each battery 11 and the inverter 13.

  As described above, by making it possible to change the height of the mounting position of the power supply device 9 and the like with respect to the frame zack 21, the height of the center of gravity of the heavy load carried by the operator Z can be adjusted. That is, the height of the center of gravity of the power supply device 9 and its constituent devices (battery 11 and inverter 13) can be set so that the burden on the worker Z is reduced most.

  The frame zack 21 and the power supply device 9 can be pulled and moved by the operator Z. For this reason, the frame zack 21 has a foldable conveyance travel unit 31 provided at the lower part of the frame 23. The transport traveling unit 31 is attached to the frame 23 by hinge coupling with the lower end of the frame 23 as an axis. In addition, a foldable column 33 attached to the frame 23 by a hinge 33a at the upper end is provided at the lower part of the frame 23. The transport traveling unit 31 and the support column 33 are each provided in a pair of left and right at the lower part of the frame 23. An endless track (also referred to as a crawler) is employed as the transport traveling unit 31.

  As shown in FIG. 4 (d), the transport travel unit 31 is pulled forward, and the support 33 is pulled out and the lower end of the support 33 is joined to the front of the transport travel unit 31. Reference numeral 31 functions as a stand for the frame zack 21. That is, the conveyance traveling unit 31 can be grounded, and the frame backpack 21 and the power supply device 9 can stand on a substantially horizontal placement surface. Further, when the frame zack 21 and the power supply device 9 are pulled from this state by holding the handle 21a at the upper end of the frame zack 21, the transport traveling unit 31 rolls on the placement surface, and the frame zack 21 and the power supply device 9 are moved. It can be moved smoothly on the mounting surface. Therefore, it is possible to use the frame zack 21 and the power supply device 9 such that the compacting operation is performed while the frame zack 21 and the power supply device 9 are independently moved on the placement surface in the vicinity of the worker Z.

  Here, for example, in a concrete placement site where a reinforced concrete of a floor slab is constructed, the reinforcing bars may be arranged in a grid pattern along the floor surface. Considering the case where a simple wheel is employed as the transport traveling unit 31, in the concrete placement site as described above, the wheel is fitted into the lattice of the reinforcing bar and cannot be moved smoothly. On the other hand, by adopting an endless track as the transport traveling unit 31 as in the present embodiment, it is possible to smoothly move the lattice-shaped reinforcing bars. In addition, since the conveyance travel part 31 is a foldable type, in the usage pattern as shown in FIG. 2, the conveyance travel part 31 does not get in the way.

  Then, the effect by the vibrator apparatus 1 demonstrated above is demonstrated.

  Since the vibrator device 1 uses the battery 11 of the power supply device 9 as a power source, it can operate independently in the construction site. Therefore, it is not necessary to route a power cord for supplying power to the vibrator device 1 to the construction site, and no personnel are required to run the power cord. That is, the worker Z can carry out the compacting work by one person while carrying the power supply device 9, and as a result, the number of workers can be reduced.

  Further, in the system as shown in Patent Document 1, in order to adjust the frequency of the current supplied to the motor 5, the AC commercial power supply is once converted into a DC current, and further converted into an AC current. It is necessary to supply the AC motor. On the other hand, in the vibrator device 1 using the battery 11 as a power source, a direct current from the battery 11 may be converted into an alternating current by the inverter 13 and supplied to the motor 5. That is, in the vibrator device 1, since the current conversion in the inverter 13 is simpler than that of the method of Patent Document 1, the power loss is suppressed and the efficiency is improved.

  In general, since the battery is lighter than the engine shown in Patent Document 2, the burden on the operator Z is reduced. Moreover, since the motor 5 built in the vibrating body 3 is used as a vibration drive source, the cord connecting the power supply device 9 and the vibrating body 3 is the power cord 15 for supplying power. Such a power cord 15 is lighter, easier to bend, and has less vibration than a hose with a built-in rotating shaft as disclosed in Patent Document 2. Therefore, in the operator Z, the burden which handles the electric power cord 15 and the vibrating body 3 is small, a fine work becomes easy, and workability | operativity improves.

  Moreover, in the vibrator device 1, compared with the case where an engine is used, smoke is not generated and noise and exhaust heat are suppressed to be small, so that workability is better. Moreover, since there is no generation | occurrence | production of smoke, the vibrator apparatus 1 can also be used in a mine. In addition, the power cord 15 has fewer failures than the shaft rotating in the hose, so that the life of the device can be extended.

  Further, since the power cord 15 is provided with a low-rigidity portion 15 a such as a curled cord structure, for example, when the operator Z moves the vibrating body 3, it is caused by being connected to the power supply device 9. There are few movement restrictions. Therefore, the operability of the power cord 15 and the vibrating body 3 is good, and the workability is further improved.

  According to the experiments by the present inventors, when a vibrating body having a diameter of 50 mm was driven by a battery having a weight of 10 kg and a charging time of 4 hours, continuous operation for 1.5 hours was possible. When a vibrating body having a diameter of 40 mm was driven by the same battery, continuous operation for 2.2 hours was possible. In view of the weight of the battery, the charging time, and the continuous operation time as described above, it is considered that the vibrator device 1 can be sufficiently operated when it is assumed that it is used for construction of an RC housing of a civil engineering structure.

(Second Embodiment)
Then, 2nd Embodiment of the vibrator apparatus (concrete construction apparatus) based on this invention is described, referring FIG. In the vibrator device 201 of the present embodiment, the same or equivalent components as those of the vibrator device 1 described above are denoted by the same reference numerals, and redundant description is omitted. FIG. 5A is a perspective view of the vibrator device 201 viewed from the front side, and FIG. 5B is a perspective view of the vibrator device 201 viewed from the back side.

  As shown in the figure, the vibrator device 201 of the present embodiment includes a trunk-shaped zack 51 that holds the power supply device 9 and can be worn by the operator Z, instead of the frame zack 21 (see FIG. 4 and the like). Yes. The torso-type zack 51 connects the front part 55 covering the chest of the worker Z, the back part 57 covering the back part of the worker Z, the front part 55 and the back part 57, and is hung on both shoulders of the worker Z. Two shoulder pad portions 59.

  The main body material of the front surface portion 55 and the back surface portion 57 has rigidity and strength for holding heavy objects such as the battery 11 and the inverter 13, and is strong enough to withstand use at a construction site and the like. A material that fits the body of the person Z is adopted. For example, the main body of the back surface portion 57 may be configured by a core material (not shown) for ensuring rigidity and a synthetic resin fiber coating material (not shown) that covers the core material. . In addition, a material having a spring property may be employed for the shoulder pad portion 59 in order to appropriately tighten the body of the worker Z forward and backward with the front surface portion 55 and the back surface portion 57 when worn. Further, the lower portions of the front surface portion 55 and the back surface portion 57 are connected by a fixed string 61 at a position corresponding to the flank portion of the worker Z.

  The trunk-type zack 51 includes a plurality of pockets 63 for storing the battery 11 and the inverter 13 of the power supply device 9. For example, in the present embodiment, one pocket 63 is disposed on the front surface portion 55 and two pockets 63 are disposed on the back surface portion 57. One battery 11 is accommodated in each of the two pockets 63 arranged in the left-right direction on the back surface portion 57. The inverter 13 is accommodated in the pocket 63 disposed in the left chest portion of the front surface portion 55.

  The wiring 14 for outputting the alternating current from the inverter 13 is routed from the pocket 63 on the left chest to the position on the right side of the front surface 55 and connected to the root portion (low rigidity portion 15a) of the power cord 15. . Thereby, the electric power cord 15 is pulled out from the right side portion of the trunk-type zack 51, and is easy to use for a right-handed worker Z. Depending on the handedness of the operator Z, the right and left positional relationship in the front portion 55 may be changed, for example, by arranging the pocket 63 for the inverter 13 on the right chest and routing the wiring to the left portion of the front portion 55. Is possible. Other electrical wiring is appropriately constructed in the body-type zack 51. For example, the battery 11 disposed on the back surface portion 57 and the inverter 13 disposed on the front surface portion 55 are electrically connected via a wiring cord 59 a provided on the shoulder pad portion 59.

  Moreover, each pocket 63 is detachable with respect to the front surface part 55 and the back surface part 57, and you may make it change the attachment position freely. For example, a plurality of pocket mounting portions (not shown) may be arranged in the vertical direction on the front surface portion 55 and the back surface portion 57, and the pocket 63 may be mounted by selecting any one of the pocket mounting portions. Accordingly, the height of the center of gravity of the battery 11 and the inverter 13 can be selected and set so that the burden on the worker Z is reduced most.

  Also with the vibrator device 201 including the trunk-type zack 51 as described above, the same effects as those of the vibrator device 1 described above can be obtained. In addition, since the two batteries 11 and one inverter 13 that are components of the power supply device 9 are divided, the weight of the power supply device 9 can be distributed and arranged in each pocket 63, and the operator Z's The burden can be reduced.

(Third embodiment)
Then, 3rd Embodiment of the vibrator apparatus (concrete construction apparatus) based on this invention is described, referring FIG. In the vibrator device 301 of the present embodiment, the same or equivalent components as those of the vibrator devices 1 and 201 described above are denoted by the same reference numerals, and redundant description is omitted.

  As shown in the figure, the vibrator device 301 of the present embodiment includes a wearing tool 71 instead of the above-described trunk-type zack 51 (see FIG. 5). The wearing tool 71 includes a band-shaped main body 73 that extends over the chest and back of the operator Z. Predetermined parts of the main body 73 are appropriately connected with each other by a belt 75, so that the entire wearing tool 71 is formed in a vest type that can be worn on the upper body of the worker Z.

  By thinning the battery 11 and the inverter 13, the battery 11 and the inverter 13 of the power supply device 9 can be held by the wearing tool 71 so as to be built in the main body 73. In the present embodiment, one vertically long battery 11 is built in each portion of the main body 73 corresponding to the backs of the shoulders of the worker Z. In addition, a horizontally long inverter 13 is incorporated in the main body 73 at a position between the batteries 11. By reducing the weight and thickness of the battery 11 and the inverter 13, the rigidity and strength required for the wearing tool 71 can be reduced to some extent. Therefore, in this case, as the wearing tool 71, a construction truchock or the like may be employed. In addition, the wiring which electrically connects the electric components such as the two batteries 11, the inverter 13, and the power cord 15 is appropriately constructed in the wearing tool 71.

  Also with the vibrator device 301 including the wearing tool 71 as described above, the same operational effects as those of the vibrator devices 1 and 201 described above are exhibited.

  The present invention can be implemented in various forms including various modifications and improvements based on the knowledge of those skilled in the art including the above-described embodiments. Moreover, it is also possible to configure a modified example using the technical matters described in the above-described embodiment. You may use combining the structure of each embodiment suitably. For example, in the embodiment, the power source of the power supply device 9 is divided into two batteries 11, but may be divided into three or more batteries 11. Moreover, it is not essential to divide the power source into the plurality of batteries 11, and one battery 11 may be provided.

  In the embodiment, an example in which an AC motor is employed as the motor 5 of the vibrating body 3 is described. However, the motor 5 may be a DC motor (direct current motor) that can be driven by a direct current. In this case, a direct current from the battery 11 can be directly supplied to the motor 5, and the inverter 13 can be omitted.

  1, 201, 301 ... Vibrator device (concrete construction device), 3 ... Vibrating body, 5 ... Motor, 7 ... Eccentric weight, 9 ... Power supply device (power supply unit), 11 ... Battery (battery), 13 ... Inverter, 15 ... Electric power cord, 15a ... Low rigidity part, 21 ... Frame zack (holding attachment), 29 ... Winding device (winding mechanism), Z ... Worker.

Claims (7)

A vibrator having a motor and a weight driven by the motor;
A power supply unit having a battery for holding power supplied to the motor;
A power cord for connecting the power supply unit and the vibrator and transmitting power from the power supply unit to the motor;
A concrete construction apparatus comprising: a holding fixture that holds the power supply unit and can be worn by a construction worker. The holding fixture is
The concrete construction apparatus according to claim 1, wherein a height of a position where the constituent device of the power supply unit is held can be changed with respect to the construction worker.   The concrete construction apparatus according to claim 1, wherein the holding fixture includes a winding mechanism that winds the power cord.   The concrete construction apparatus according to any one of claims 1 to 3, wherein the power cord has a low-rigidity portion that is easier to bend than other portions.   The concrete construction apparatus according to any one of claims 1 to 4, wherein the power supply unit includes an inverter that converts a direct current from the battery into an alternating current and supplies the alternating current to the motor.   The said electric power supply part is a concrete construction apparatus of any one of Claims 1-5 which has multiple said batteries.   The concrete construction apparatus according to claim 1, wherein the motor of the vibrating body is a direct current motor that can be driven by a direct current.

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