CN211617489U - Railway contact net insulator replacer - Google Patents

Abstract

The utility model discloses a railway catenary insulator changer, which comprises a telescopic device, the telescopic device comprises a sliding box, and the symmetrical ends of the inner wall of the sliding box are respectively provided with slidable upper push rods and lower push rods. One end of the rod extends out of the sliding box respectively, the end surface corresponding to the push rod is a rack structure, and a matching gear is meshed between the racks, and the gear is rotatably installed inside the sliding box through the rotating shaft. One end penetrates out of the sliding box and extends out of the sliding box, and a self-locking device is fixed; the extension end of the lower push rod is provided with a bottom clamping mechanism; the extension end of the upper push rod is provided with an inclined Wrist arm clamping device, the effect of the new model is: the rack and pinion telescopic mode and the self-locking mechanism are provided to push the wrist arm to realize the function of quickly replacing the insulator, and under the premise of ensuring high work efficiency, the device has a long service life, and Has high stability.

Description

A railway catenary insulator changer

technical field

The utility model relates to a railway catenary insulator changer, which belongs to the technical field of railway catenary.

Background technique

The catenary is the main frame of the railway electrification project, and it is a special form of transmission line erected along the railway line to supply power to electric locomotives. The main support structure of the catenary is the wrist arm, including the flat wrist arm and the inclined wrist arm, which are used to suspend the bearing cable and the contact line respectively, and form a right-angled triangular structure with the catenary column and are installed on the upper part of the catenary column. It is used to bear the weight of the catenary and position the contact wire. The electrical insulating parts between it and the grounding body are insulators, which are mainly used to carry the load of the wire and maintain the electrical insulation between the wire and the tower itself.

Because insulators are exposed to the outside for a long time and are consumables, they need to be inspected, maintained and replaced regularly. Although the catenary is installed with arresters at certain distances, it still cannot effectively protect the insulating parts of the catenary. After the catenary is struck by lightning, The insulators of the wrist arm are most vulnerable to lightning breakdown, resulting in a short circuit of the catenary, and the insulator damage occurs, which seriously affects the normal operation of the railway.

Affected by railway traffic, special rail machinery cannot be used to deal with the above problems, but manual replacement is required, and the operation time is urgent. Manual replacement of the wrist arm insulator, the most difficult is the inclined wrist arm, because the catenary weight it bears exceeds 100kg, it is time-consuming and laborious to replace the insulator on the catenary pillar pole with the catenary wire with the existing tools. It is not conducive to the rapid repair work of the on-site catenary.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a railway catenary insulator replacement device, which solves the problem that the replacement of the insulator of the railway catenary is time-consuming and laborious.

The technical scheme adopted by the utility model is as follows: a railway catenary insulator changer, comprising a telescopic device, the telescopic device comprises a sliding box, and the upper and lower ends of the inner wall of the sliding box are respectively installed with slidable through the sliding groove sliding rail mechanism The upper push rod and the lower push rod, and one end of the two push rods respectively extend out of the sliding box, the corresponding end surface in the sliding box of the push rod is a rack structure, and a matching gear is meshed between the racks, and the gear A rotating shaft is rotatably fixed inside the sliding box, one end of the rotating shaft passes through the sliding box and extends out of the sliding box, and is fixed with a self-locking device and a turning handle, the self-locking device includes a ratchet, and the self-locking device includes Ratchet wheel, the ratchet wheel is fixed on the rotating shaft, the sliding box is close to the ratchet wheel end is fixed with a pawl that can be rotated and matched with the ratchet wheel, and when the handle is rotated, the ratchet wheel rotates, so that the rotation of the gear drives the rack to slide inside the sliding box to realize Telescopic performance, and the engagement of the pawl and the ratchet can prevent the ratchet from rotating in the opposite direction; the extension end of the lower push rod is hingedly connected with a bottom clamping mechanism, and the bottom clamping mechanism includes a side plate, and the lower end of one side of the side plate is hinged. The hinge is hingedly connected to the lower push rod, the upper end of the other side of the side plate is fixed with one end of a symmetrical threaded rod, and one end of a movable clamping plate is sleeved on the threaded rod, and the other end of the clamping plate is open There is an opening with an arc structure, and the opening can be clamped to another threaded rod. The other end of the threaded rod is engaged with a self-locking nut. The extension end of the upper push rod is fixed with an oblique wrist arm clamping device through a connecting piece, and the oblique wrist arm clamping device includes a fixing groove, and an outer end of the fixing groove is installed with a rotatable locking device A bolt, the threaded portion of the bolt is engaged with a matching lock nut, the other end of the fixed groove is hinged with a movable groove that is adapted to it, and the side end of the movable end of the movable groove is provided with a clamping lug, the clamping lug There is an opening slot matched with the locking bolt, the fixed slot and the movable slot are sleeved on the oblique wrist arm, the rotating locking bolt is located in the opening slot, and the locking nut is tightened to realize the clamping and fixing of the oblique wrist arm.

Further, the telescopic device can be replaced with any one of a hydraulic cylinder telescopic device, an electric telescopic rod, and a screw casing telescopic device. If it is replaced with a hydraulic cylinder telescopic device or an electric telescopic rod, the hydraulic cylinder telescopic device or the electric telescopic The bottom of the telescopic rod is hingedly connected with the side plate of the bottom clamping device, and the top of the hydraulic cylinder telescopic device or the electric telescopic rod is fixedly connected with the inclined wrist arm clamping device; if it is replaced with a screw sleeve telescopic device, the screw sleeve The pipe telescopic device includes a sleeve, the inside of the sleeve is a threaded structure, two ends of the sleeve are internally engaged with screw rods with opposite screw threads, one end of the rod is hingedly connected with the side plate of the bottom clamping device, and the other end of the screw rod is hingedly connected. It is fixedly connected with the inclined wrist arm clamping device, and the rotation of the sleeve can realize the expansion and contraction of the screw rod.

Further, a blocking plate is fixed at the end of the threaded rod engaging the self-locking nut to prevent the self-locking nut from falling off.

Further, the push rod is fixed with a limit piece at the inner end of the sliding box to prevent the rack from sliding out of the gear.

Further, a rubber anti-skid cover is fixed on the turning handle.

The beneficial effects of the present utility model:

The utility model only needs to rotate the bar in a certain space to achieve the telescopic performance, reduce the operation difficulty and the operation strength, and save time and effort.

The utility model is provided with a self-locking device of a ratchet and pawl, which can ensure that the rack and pinion have the performance of positioning and self-locking after being extended and retracted.

The utility model adopts the form of gear transmission to realize the telescopic performance of the device, so that the device has long service life, stable operation and high reliability.

The clamping mechanism of the utility model is integrated, convenient and quick to operate, and has high tightness; under the condition of ensuring safety, a single person can quickly replace the insulator, which greatly improves the operation efficiency of the emergency repair of the catenary on site. .

Description of drawings

Figure 1 is a schematic diagram of the front view structure of the new type.

Figure 2 is a schematic diagram of the new three-dimensional structure.

Figure 3 is a schematic diagram of the new three-dimensional partial structure.

FIG. 4 is a schematic three-dimensional structure diagram of a novel oblique wrist arm clamping device.

FIG. 5 is a schematic diagram of the partial structure of the novel front section.

FIG. 6 is a schematic diagram of the three-dimensional structure of the novel base clamping device.

In the picture: telescopic device 1, sliding box 1-1, chute 1-2, sliding rail 1-3, upper push rod 1-4, lower push rod 1-5, gear 1-6, rotating shaft 1-7, limit Position piece 1-8, self-locking device 2, ratchet 2-1, mounting ear 2-2, pawl 2-3, bottom clamping mechanism 3, side plate 3-1, hinge 3-2, threaded rod 3- 3. Self-locking nut 3-4, clamping plate 3-5, baffle 3-6, inclined wrist arm clamping device 4, fixing slot 4-1, movable slot 4-2, hinge ear 4-3, locking Bolts 4-4, locking nuts 4-5, clamping ears 4-6, pillars 5, insulators 6, inclined wrist arms 7, connecting pieces 8, fastening grooves 8-1, connecting plate 8-2, turning handle 9 .

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating Or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Example 1

As shown in Fig. 1-6, the described one kind of railway catenary insulator changer includes a telescopic device 1, and the telescopic device 1 includes a sliding box 1-1, the upper and lower end faces of the inner wall of the sliding box 1-1 are respectively opened There are chutes 1-2, the chutes 1-2 are respectively matched with the sliding rails 1-3 welded and fixed on the upper push rod 1-4 and the lower push rod 1-5 in the sliding box 1-1, and the two push rods One end of the upper push rod 1-4 and the lower push rod 1-5 are respectively extended out of the sliding box 1-1, and the corresponding end faces of the sliding box 1-1 are rack structures, and the two racks are meshed with an adapter. Gear 1-6, the gear 1-6 is welded and fixed on the rotating shaft 1-7, and the rotating shaft 1-7 is rotatably fixed on the left and right ends of the sliding box 1-1 through the bearing fixed on the sliding box 1-1, One end of the rotating shaft 1-7 passes through the sliding box and extends out of the sliding box 1-1, and is fixed with a self-locking device 2 to prevent the rack and pinion structure from moving itself. The self-locking device 2 includes a ratchet 2-1, and the The ratchet wheel 2-1 is welded and fixed on the rotating shaft 1-7, and the sliding box 1-1 at the inner end of the ratchet wheel 2-1 is welded and fixed with a mounting ear 2-2 perpendicular to the length direction of the sliding box 1-1. The mounting ear 2- 2 is installed with a pawl 2-3 which is rotatably engaged with the ratchet wheel 2-1 through a pin shaft, and a turning handle 9 is fixed on the rotating shaft 1-7 at the outer end of the ratchet wheel 2-1 by bolts. The rotating shaft 2-3 drives the ratchet 2-1 and the gear 1-6 to rotate, so that the rotation of the gear 1-6 drives the upper push rod 1-4 and the lower push rod 1-5 to slide inside the sliding box 1-1 to realize the telescopic performance, and The ratchet wheel 2-1 engages with the pawl 2-3 and has a self-locking effect; the extension end of the lower push rod 1-5 is hingedly connected with a bottom clamping mechanism 3, and the bottom clamping mechanism 3 includes a side plate 3-1 , the lower end of the side plate 3-1 is welded with the hinge groove of the hinge piece 3-2, the lower push rod 1-5 is welded with a hinge joint, the hinge groove and the hinge joint are hingedly connected by a pin, and the side plate 3- 1. A symmetrical threaded rod 3-3 is fixed on the upper end of the other side, and one end of the threaded rod 3-3 is fixed on the side plate 3-1 through two self-locking nuts 3-4 distributed at both ends of the side plate 3-1. , a threaded rod 3-3 is sleeved with one end of a movable clamping plate 3-5, the other end of the clamping plate 3-5 is provided with an arc-shaped opening, and the opening can be clamped to another thread On the rod 3-3, the other end of the threaded rod 3-3 is engaged with an adapted self-locking nut 3-4, so that the clamping plate 3-5 and the side plate 3-1 are clamped to the pillar 5 through the self-locking bolt. To achieve the tightening effect; the extending end of the upper push rod 1-4 is fixed with the inclined wrist arm clamping device 4 through the connecting piece 8, and the connecting piece includes a tightening groove 8-1, and the tightening groove 8- 1. Welded and fixed on the lower end of the upper push rod 1-4, the fastening groove 8-1 is fixedly connected with a connecting plate 8-2 of a T-shaped structure through at least two fastening bolts, and the lower end of the connecting plate 8-2 is fixed with an oblique The wrist arm clamping device 4, the oblique wrist arm clamping device 4 includes a fixing groove 4-1, an outer end of the fixing groove 4-1 is welded and fixed with a hinge ear 4-3, and the hinge ear 4-3 passes through The pin shaft is connected with a rotatable locking bolt 4-4, and the pin shaft is connected with the locking bolt 4-4 Vertically welded and fixed connection, the threaded portion of the locking bolt 4-4 is engaged with a matching nut 4-5, and the other end of the fixed groove 4-1 is hinged with a matching movable groove 4-2 through a pin shaft , the side end of the movable end of the movable groove 4-2 is welded and fixed with a clamping lug 4-6, the clamping lug 4-6 is provided with an opening groove adapted to the fixing bolt, and the fixing groove 4-1 and The movable slot 4-2 is sleeved on the oblique wrist arm, the locking bolt 4-4 is rotated to locate in the opening slot, and the locking nut 4-5 is tightened to realize the clamping and fixing of the oblique wrist arm 7.

In the present invention, in consideration of preventing the self-locking nut 3-4 from falling off, the end of the threaded rod 3-3 engaging with the self-locking nut 3-4 is fixed with a blocking piece 3-6.

In the present invention, in consideration of preventing sliding and improving clamping stability, the side plate 3-1, clamping plate 3-5, fixing groove and movable groove 4-4 are respectively fixed with elastic rubber layers adapted to them by screws. structure.

In the present invention, considering preventing the rack from sliding out of the gear 1-6, the push rod is fixed with a limiting piece 1-8 at the inner end of the sliding box 1-1.

Example 2

The telescopic device 1 described in Embodiment 1 can be replaced with one of a hydraulic cylinder telescopic device, an electric telescopic rod, and a screw-casing telescopic device.

If it is replaced with a hydraulic cylinder telescopic device or an electric telescopic rod, the bottom of the hydraulic cylinder telescopic device or the electric telescopic rod is hingedly connected with the side plate 3-1 of the bottom clamping device 3, and the top of the hydraulic cylinder telescopic device or the electric telescopic rod passes through The fastening bolt is fixedly connected with the installation groove 4-1 of the inclined wrist arm clamping device 4; if it is replaced with a lead screw casing telescopic device, the lead screw casing telescopic device includes a casing, and the inside of the casing is a threaded structure , the two ends of the sleeve are internally engaged with screw rods with opposite screw threads. 4-1 is connected by the connecting piece 8, and rotating the sleeve can realize the expansion and contraction of the screw rod.

The working principle and using method of the present utility model:

Fix the pillar 5 clamping device and the oblique wrist arm clamping device 4 on the pillar 5 and the oblique wrist arm 7 at appropriate positions respectively; turn the pawl 2-3 to the front side of the installation ear 2-2, and turn the handle clockwise 2-4, the push rod moves to both sides of the sliding box 1-1, and pushes the inclined wrist arm 7 to move upward. When the inclined wrist arm 7 is separated from the insulator 6, stop turning the handle 2-4; use a tool to remove the old insulator 6 , and then install the new insulator 6; remove the device, turn the pawl 2-3 behind the installation ear 2-2, and turn the handle 2-4 counterclockwise to shrink the push rod.

Although the present invention has been described in detail with reference to the foregoing examples, for those skilled in the art, it is still possible to carry out and modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.

Claims (8)

1. A railway catenary insulator changer, comprising a telescopic device, characterized in that: the telescopic device comprises a sliding box, and the symmetrical ends of the inner wall of the sliding box are provided with a slidable upper push rod and a lower push rod, and the two One end of the push rod extends out of the sliding box respectively, the corresponding end surface in the sliding box of the push rod is a rack structure, and a matching gear is meshed between the racks, and the gear is rotatably installed inside the sliding box through the rotating shaft, One end of the rotating shaft passes out of the sliding box and extends out of the sliding box, and is provided with a self-locking device and a turning handle; the extension end of the lower push rod is provided with a bottom clamping mechanism; the extension of the upper push rod The end is provided with an inclined wrist arm clamping device through the connecting piece. 2. A railway catenary insulator changer according to claim 1, wherein the expansion device can be replaced with any one of a hydraulic cylinder expansion device, an electric expansion rod, and a screw casing expansion device, If it is replaced with a hydraulic cylinder telescopic device or an electric telescopic rod, the bottom of the hydraulic cylinder telescopic device or the electric telescopic rod is hingedly connected with the bottom clamping device, and the top of the hydraulic cylinder telescopic device or the electric telescopic rod is connected to the inclined wrist arm by fastening bolts. The clamping device is fixedly connected; if it is replaced with a lead screw casing telescopic device, the lead screw casing telescopic device includes a casing, the inside of the casing is a threaded structure, and the two ends of the casing are internally engaged with a lead screw with opposite screw threads. The end of one screw rod is hingedly connected with the bottom clamping device, and the other end of the screw rod is fixedly connected with the inclined wrist arm clamping device, and the screw rod can be extended and retracted by rotating the sleeve. 3. A railway catenary insulator changer according to claim 1, characterized in that: the self-locking device comprises a ratchet, the ratchet is fixed on the rotating shaft, and the sliding box is provided with a rotatable and The ratchet engages the mating pawl. 4. A railway catenary insulator changer according to claim 1, characterized in that: the bottom clamping mechanism comprises a side plate, and the lower end of one side of the side plate is hingedly connected to the lower push rod through a hinge, and the side plate is hinged. The upper end of the other side of the plate is fixed with one end of a symmetrical threaded rod, wherein a threaded rod is sleeved with one end of a movable clamping plate, and the other end of the clamping plate is provided with an arc-shaped opening, and the opening can be The other end of the threaded rod is engaged with a matching self-locking nut. 5 . The railway catenary insulator changer according to claim 1 , wherein the inclined wrist arm clamping device comprises a fixing slot, and an outer end of the fixing slot is provided with a rotatable locking bolt, 6 . The threaded portion of the bolt is engaged with a matching locking nut, the other end of the fixing groove is hinged with a movable groove that is adapted to it, and the side end of the movable end of the movable groove is provided with a clamping lug, and the clamping lug is opened with a clamping lug. Open slot to fit the locking bolt. 6 . The railway catenary insulator changer according to claim 1 or 3 , wherein a rubber anti-skid sleeve is fixed on the turning handle. 7 . 7 . The railway catenary insulator changer according to claim 4 , wherein the threaded rod engages with the self-locking nut end and is fixed with a stopper. 8 . 8 . The railway catenary insulator changer according to claim 1 , wherein the push rod is provided with a limit piece at the inner end of the sliding box. 9 .

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