JPH062241B2 - Jig for mounting the electric discharge line of the electric dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention is a clip that spans between discharge line mounting shafts at positions between ground electrode plates that are arranged in parallel to the charging portion of an electrostatic precipitator. TECHNICAL FIELD The present invention relates to a discharge wire mounting jig and a jig for mounting a discharge wire stretched via a tension spring.

[Conventional technology]

First, FIGS. 4 to 7 show the structure of the charging unit of the electrostatic precipitator to which the present invention is applied. In the figure, 1 is an outer frame of the charging section, 2 is a support rod of a ground electrode plate attached to a side plate of the outer frame 1, and 3 is carried on the axis of the support rod 2 and has a predetermined pitch interval p inside the outer frame 1. Ground electrode plates 4 arranged side by side are discharge lines stretched between the ground electrode plates 3 in parallel with the electrode plates, and the discharge lines 4 are supported on the side plates of the outer frame 1 via insulators 5. In the state in which a slight tension is applied to the upper and lower discharge line support rods 6 which are straddled between the discharge line mounting shafts 7 mounted on the shafts thereof via a clip-type discharge line mounting metal 8 and a tension spring 9. It is supported by hanging.

In addition, the above-mentioned clip type discharge wire mounting bracket 8 is shown in FIG.
As clearly shown in FIG. 7, a metal plate is bent into a hairpin shape and has a U-shaped cross section, and a groove 8a for positioning is formed at the top of the metal plate so that the groove 8a can be inserted into the groove 8a. A U-shaped engaging pin 8b is welded to the side surface of the metal fitting 8. On the other hand, a recessed groove 7a corresponding to the positioning recessed groove 8a is formed at the mounting position of the discharge wire mounting bracket 8 on the discharge wire mounting shaft 7. With such a structure, the clip-shaped discharge wire mounting metal fitting 8 is inserted into the discharge wire mounting shaft 7 from the outside, and the engaging pins 8b are aligned so that the recessed grooves 7a and 8a are aligned with each other. It is fitted in and positioned.

In contrast to the structure for mounting the discharge wire 4, the discharge wire 4 is conventionally stretched between the discharge wire mounting shafts 7 by the following method. That is, first, the tension springs 9 are provided on both ends of the discharge wire 4.
The discharge wire mounting metal fitting 8 is hooked and held by the operator, and in this state, the worker holds the discharge wire mounting metal fitting 8 in his hand and inserts it between the ground electrode plates 3, and then the tension spring 9 is stretched while the upper and lower discharge wire mounting metal fittings 8 are stretched. The metal fitting 8 is fitted on the mating discharge wire mounting shaft 7 so as to be hooked.

[Problems to be solved by the invention]

By the way, when the discharge wire 4 is mounted manually by an operator as described above, the following problems occur in terms of work. That is, in an ordinary electrostatic precipitator, the ground electrode plates 3 provided in the charging section are made of a thin aluminum plate and are arranged side by side with a pitch interval p set to a narrow interval of about 40 mm. The discharge wire 4 has a diameter of 0.3 mm and a length of, for example, about 70 cm, and the number of installed sets is usually several tens. For this reason, when the discharge wire 4 is stretched manually, only the fingertips can be inserted into the gap between the ground electrode plates 3 and moreover, the ground electrode plate 3 cannot be touched during the work. If a little force is applied to the ground electrode plate 3, the ground electrode plate 3 made of a thin aluminum plate is easily deformed, which may adversely affect the corona discharge characteristics during operation. For this reason, the work to stretch the discharge lines is done with great care.However, as the workability is extremely poor and the number of discharge lines is large, as described above, this discharge line installation work Requires the skill of workers and a great deal of time.

The present invention has been conceived in view of the above points, and an object of the present invention is to provide a discharge wire mounting shaft that can be operated safely and efficiently by a simple operation without directly relying on manual work for mounting the discharge wire. An object is to provide a jig for mounting a discharge line that can be hooked and supported between.

[Means for solving problems]

In order to solve the above-mentioned problems, according to the present invention, a jig main body having a length corresponding to the length dimension of the discharge wire, and the discharge wire attachment to the tip end of the jig main body. The jig main body comprises a pair of arms for detachably engaging and holding metal fittings, and an extension / contraction drive mechanism for moving at least one of the arms with respect to the jig main body in the longitudinal direction thereof. Load the discharge wire mounting bracket, tension spring, and discharge wire between the arms while pulling to the arm, and expand the space between the arms by operating the expansion / contraction drive mechanism while keeping the discharge wire loaded to open the discharge wire mounting bracket on the charging side. The arm shall be pulled back again after it has been moved onto the wire mounting shaft, and the arm shall be hooked.

[Action]

By using the above-mentioned jig for mounting the discharge wire, first load the parts such as the discharge wire, the tension spring, the discharge wire mounting bracket, etc. between the arms of the jig at a position away from the charging part, and then load the discharge wire. While moving the jig body to the charging part as it is, insert the tip of the arm of the jig into the narrow gap between the ground electrode plates from the front, and easily operate the expansion and contraction drive mechanism of the arm to easily attach the clip-type discharge wire mounting bracket. The discharge line can be attached by hooking it at a predetermined position on the mating discharge line attachment shaft. Moreover, in this process, the worker does not need to insert his / her hands, fingers, etc. between the ground electrode plates, which allows the work to proceed safely and efficiently without damaging the ground electrode plates.

〔Example〕

1 to 3 show an embodiment of a discharge wire mounting jig according to the present invention. FIG. 1 is a mechanical view of the jig, and FIG.
FIG. 3 is a view showing the state of work for mounting the discharge line, and FIG. 3 is a sectional view of the arm in FIG. The same members corresponding to FIGS. 5 to 7 are designated by the same reference numerals.

First, the overall structure of the discharge wire mounting jig 10 will be described with reference to FIG. 1. The jig 10 is a jig main body 11 that is a long columnar body substantially corresponding to the length of the discharge wire 4, and the jig main body. A pair of movable arms 12 arranged at the upper and lower ends of 11 and the arm 12
11 is an assembly with a telescopic drive mechanism 13 that is operated to move in the longitudinal direction. Here, the arm 12 has an engaging pin 8b at the tip thereof as shown in FIG.
Groove for releasably engaging and retaining the metal fitting 8 depending on the
Equipped with 14. Further, the extension / contraction drive mechanism (13) has one end connected to the upper and lower arms 12, respectively, and lifting links 15 and 16 guided and supported in the jig body 11 so as to be movable in the longitudinal direction.
It comprises a swing type operation lever 17 connected across the links 15 and 16, and the operation lever 17 is rotated by an operation handle (not shown) or the like.

Note that FIG. 1 shows a folded state in which the upper and lower arms 12 are pulled toward the jig main body 11, and the operation lever 17 is rotated counterclockwise by operating the extension drive mechanism 13 from the illustrated state, The upper and lower arms 12 move up and down via the links 15 and 16 so as to widen the mutual space.

Next, an operation procedure for mounting the discharge wire 4 using the jig 10 having the above configuration will be described. First, in the folded state shown in FIG. 1, the discharge wire mounting metal fittings 8 are inserted and set in the tip grooves 14 of the arms 12, and the tension springs 9 are mounted on the upper metal fittings. In the meantime, both ends of the discharge wire 4 are locked, and then the operation handle is inserted into the handle hole 18 of the extension / contraction drive mechanism 13 as shown in FIG. To do. As a result, the upper and lower arms 12 simultaneously move in the direction of the arrow via the links 15 and 16, and the tension spring 9 loaded between the arms is stretched so that the mutual distance l between the upper and lower discharge wire mounting brackets 8 is expanded. Become. It should be noted that the distance l in this state is set to be slightly larger (l> D) than the distance D between the upper and lower discharge wire mounting shafts 7 equipped on the charging unit side shown on the right side of FIG.

Subsequently, the jig 10 is moved to the charging portion as shown by an arrow P while the discharge wire 4 is loaded on the jig 10 and the tip of the arm 12 is moved to the mutual pitch of the ground electrode plate 3 as shown in FIG. After inserting the space between the discharge wire mounting shaft 8 and the discharge wire mounting metal fitting 8 at a predetermined mounting position on the axis of the discharge wire mounting shaft 7, the telescopic drive mechanism 13 is folded again to the state shown in FIG.
Attract. As a result, as described with reference to FIGS. 6 and 7, the clip-shaped discharge wire mounting bracket 8 engages with the discharge wire mounting shaft 7, and then the discharge wire mounting bracket 7 is positioned in the positioning groove 7a. The engaging pin 8b of 8 is fitted and is fixed in that position by the spring force of the tension spring 9. Finally the jig
By pulling out 10 from the charging part, the work of attaching a set of discharge wires is completed. Thereafter, the same operation is repeated to attach the discharge wire 4 to all the attachment points of the charging section.

In the illustrated jig, an example is shown in which the arms 12 arranged at both ends of the jig body 11 are used as movable arms to be simultaneously moved and operated by the telescopic drive mechanism 13.
It is also possible for 12 to implement at least one arm as a movable arm and the other as a fixed arm. Further, the extension / contraction drive mechanism 13 is not limited to the illustrated embodiment, and various mechanisms can be used to move the arm.

[Effects of the Invention] As described above, according to the present invention, an elongated jig main body corresponding to the length dimension of the discharge wire, and the discharge wire at the tip end of the jig main body. The jig includes a pair of arms that detachably engages and holds the mounting bracket, and a telescopic drive mechanism that moves and operates at least one of the arms in the longitudinal direction of the jig body. Load the discharge wire mounting bracket, tension spring, and discharge wire between the arms while pulling it toward the main unit, and open the arms between the arms by operating the expansion / contraction drive mechanism while the discharge wire is loaded, and place the discharge wire mounting bracket on the charging unit side. Since the arm mounting jig is constructed so that the arm is pulled up again after the transfer wire is mounted on the shaft for mounting the discharge wire, and the arm is fixed, the conventional method is used when mounting the discharge wire on the charged part of the electrostatic precipitator. Rely on direct manual work The discharge line installation work can be carried out efficiently without any need. Moreover, by using the jig, even if the space between the discharge electrode and the ground electrode plate corresponding to the discharge line is narrow, it is possible to safely perform the work of attaching the discharge line without damaging the easily deformable ground electrode plate. There are also advantages such as being possible.

[Brief description of drawings]

1 to 3 show an embodiment of a discharge wire mounting jig according to the present invention. FIG. 1 is a structural view of the entire jig, FIG. 2 is a discharge wire mounting operation state diagram, and FIG. FIG. 1 is an enlarged sectional view of an arm in FIG. 1, FIG. 4 is a partial front view showing the configuration of a charging portion of an electrostatic precipitator, and FIG. 5 is an enlarged side view of a discharge wire attachment portion in FIG. 4, FIG. FIG. 7 is an enlarged view showing a portion where the discharge wire mounting metal fitting is hooked on the discharge wire mounting shaft in FIG. 5, and FIG. 7 is a sectional view taken along the line VII-VII in FIG. In each drawing, 3: ground electrode plate, 4: discharge line, 7: discharge line mounting shaft, 8: discharge line mounting bracket, 9: tension spring, 10: discharge line mounting jig, 11: jig body, 12 : Arm, 13: Telescopic drive mechanism.

Claims (1)

[Claims] 1. An electrostatic discharger mounted on a charging portion of an electrostatic precipitator, which is stretched by a clip-type discharge wire mounting metal fitting and a tension spring straddled between discharge electrode mounting shafts at a position between the ground electrode plates. A jig for mounting an electric wire, which is an elongated jig body corresponding to the length dimension of the discharge wire, and is arranged at both ends of the jig body so that the discharge wire mounting bracket can be attached to and detached from the tip of the jig body. A pair of arms for engaging and holding, and a telescopic drive mechanism for moving at least one of the arms with respect to the jig body in the longitudinal direction thereof. Load the discharge wire mounting bracket, tension spring, and discharge wire between the arms, and expand the space between the arms by operating the expansion / contraction drive mechanism while the discharge wire is loaded, and place the discharge wire mounting bracket on the discharge wire mounting shaft on the charging side. After moving, pull the arm again and lock it Discharge line mounting jig electrostatic precipitator, characterized in Rukoto.