CN108045415A - A kind of breaker of switch cabinet handcart for transporting - Google Patents

Abstract

The invention discloses a switchgear circuit breaker transfer handcart, which comprises a vehicle frame, and the vehicle frame includes a bottom frame, a plurality of rollers connected to the lower part of the bottom frame, a lifting plate and a lifting plate arranged between the bottom frame and the lifting plate. It also includes a plurality of transfer trays, the left and right sides of the bottom of the transfer tray are symmetrically provided with support frames, the two support frames support the tray horizontally, and a groove is provided on the bottom surface of the transfer tray, and the groove runs through the tray. On the front end, the left and right sides of the top surface of the lifting plate are symmetrically provided with elongated ribs, which extend in the front and rear directions, and the distance between the two ribs is equal to the width of the groove on the bottom surface of the transfer tray. The present invention adopts transfer trays, and is provided with a stable and convenient clamping structure between them. Different transfer trays are provided according to different switch cabinet components. They can be stacked when not in use, and the frame is only one, which greatly saves The space in the switch room.

Description

A switch cabinet circuit breaker transfer handcart

technical field

The invention relates to a handcart for inspection and maintenance, in particular to a handcart for transferring circuit breakers of switch cabinets, which is used for transferring the circuit breakers during the inspection and repair of switch cabinet circuit breakers.

Background technique

With the surge of power consumption, there are more and more switchgears in the switchgear, and the transfer trolleys for overhauling switchgears need to be equipped with different specifications of turning trolleys because of the different sizes of circuit breakers in the switchgears. A switchgear often needs to be equipped with There are more than 10 transfer trolleys, but the space of the switch room is fixed, so the switch room is becoming more and more difficult for the staff to overhaul. In addition, the old-fashioned transfer vehicles only have a load-bearing function and cannot be lifted, which is very inconvenient to use.

Regarding the above-mentioned problems, the publication number CN203581029U disclosed in this country on May 7, 2014 is a trolley with a hydraulic device, which includes a car body, a handrail at the rear of the car body, rollers installed at the bottom of the car body, and a There is a lifting device, a panel is installed on the upper part of the lifting device, a folding ring is installed at the middle folding part of the lifting device, a hydraulic cylinder is installed at the rear of the lifting device, and an operating rod is installed at the rear of the hydraulic cylinder, pressing the operating rod can realize the up and down of the upper plate move. It designed a height-adjustable switch cabinet trolley, but in actual use, it cannot be well connected with the switch cabinet circuit breaker. Moreover, circuit breakers of different specifications still need different trolleys to be transported.

Also on April 9, 2014, the publication number disclosed in this country is CN203536823U, a kind of substation hydraulic 10kV handcart type circuit breaker special transfer trolley, which designs a self-locking device on the upper plate, which includes a lower plate, a metal handle, Upper plate, X-shaped cross rod, hydraulic cylinder, guide rod, self-locking tongue piece, self-locking handle, and a spring is arranged between the self-locking tongue piece and the upper plate. The guide rod on the device guides the switch cabinet, and then locks the transfer vehicle on the switch cabinet through the self-locking tongue. However, the weight of the circuit breaker is relatively heavy, and its rails are easily damaged if it is not transferred by the corresponding transfer trolley. Therefore, this transfer trolley can only be used for circuit breakers of one specification, and the space in the switch room cannot be fully utilized.

Contents of the invention

In order to solve the problems in the background technology, the present invention provides a switchgear circuit breaker transfer handcart, which has a simple, stable and firm structure, is suitable for transferring different types of switchgear components, and effectively saves space.

The adopted technical scheme that the present invention solves its technical problem is:

A switchgear circuit breaker transfer handcart, including a frame, the frame includes a bottom frame, a plurality of rollers connected to the lower part of the bottom frame, a lifting plate, and a lifting mechanism arranged between the bottom frame and the lifting plate; It also includes a plurality of transfer trays. The left and right sides of the bottom of the transfer tray are symmetrically provided with support frames. The two support frames support the tray horizontally. The support frames are located outside the transfer tray. The support frames of the upper transfer tray can be stacked. On the support frame of the lower transfer tray, the bottom surface of the transfer tray is provided with a groove, the groove runs through the front end of the tray, and the left and right sides of the top surface of the lifting plate are symmetrically provided with long ribs. Extending in the front-to-back direction, the distance between the two ribs is equal to the width of the groove on the bottom surface of the transfer tray, and the groove is engaged with the rib.

In a preferred embodiment, a spacer is provided at the front and rear ends of the top surface of the support frame. When two transfer pallets are stacked, the support frame of the upper transfer tray is supported on the spacer of the support frame of the lower transfer tray, and the bottom of the support frame Also features rubber feet.

In a preferred embodiment, the opening of the groove is in a figure-eight shape expanding forward, and the transfer tray is provided with a blocking piece at the rear end of the groove.

In a preferred embodiment, the distance between the front end surface of the rib and the front end surface of the lifting plate is greater than the distance between the rear end surface of the rib and the rear end surface of the lifting plate.

In a preferred embodiment, a pair of rails are provided on the top surface of the transfer pallet and a stop post is provided at the end of the rails.

In a preferred embodiment, the bottom surface of the pallet is provided with docking discs at four corners respectively, and the docking discs are in the shape of an inverted bowl; four bolts are arranged on the lifting plate, and the tops of the bolts are cones. shape, and the four bolts are inserted into the four docking discs respectively.

In a preferred embodiment, the lifting mechanism includes two inner rods symmetrically arranged left and right, two outer rods arranged symmetrically left and right and a hydraulic cylinder, the inner rods and the outer rods on the same side are hinged in an X shape, and the inner rods The lower end of the inner rod is rotationally connected with the bottom frame, the upper end of the inner rod is rotationally and slidingly connected with the lifting plate, the upper end of the outer rod is rotationally connected with the lifting plate, and the lower end of the outer rod is rotationally and slidingly connected with the bottom frame. A connecting rod is arranged between the bottoms of the inner rods, the cylinder rod of the hydraulic cylinder is hinged to the bottom frame, and the telescopic rod of the hydraulic cylinder is hinged to the connecting rod; the frame also includes a handle, which is located on the front side of the frame, The lower end of the handle is connected with the bottom frame.

In a preferred embodiment, the hydraulic cylinder includes a foot switch and a pressure relief handle, the foot switch is arranged on the front side of the bottom frame and drawn from the bottom of the bottom frame, the pressure relief handle is arranged on the handle, The pressure relief handle is connected with the disc of the one-way valve of the hydraulic cylinder.

In a preferred embodiment, the lifting mechanism further includes a locking device, the locking device includes a pressing rod and a spring arranged at the rear end of the bottom frame, the spring is sleeved on the pressing rod, and the bottom end of the pressing rod is connected to A lead, the other end of which is connected to the disc of the one-way valve of the hydraulic cylinder.

In a preferred embodiment, the lifting mechanism further includes a pair of dampers, the dampers are symmetrically arranged in the middle of the bottom frame, and the connecting rods at the X-shaped pivot joints of the inner rod and the outer rod on the same side extend outward to form A protruding post abuts on the damper during the descending process of the protruding post.

Compared with the background technology, the technical solution of the present invention has the following advantages:

1. The present invention includes a plurality of transfer trays, which have different specifications and can transfer different circuit breakers or switchgear components. The bottom of the tray is provided with a symmetrical support frame, and the support frame supports the tray in the horizontal direction, leaving a certain space at the bottom , the vehicle frame can be freely entered for clamping, and when the lifting mechanism is lowered, the transfer tray and the vehicle frame can be automatically separated and placed on the ground through the support frame. The support frame is located outside the transfer tray, and the support frame of the upper transfer tray can be stacked on the support frame of the lower transfer tray, so that pallets of different specifications can be stacked vertically through the support frame, maximizing the space saving in the switch room. The groove and the rib between the transfer tray and the vehicle frame of the present invention are used for clamping, and the splayed opening of the groove has a guiding effect; the rib is close to the rear end surface, which can better overcome the problem that the front end of the circuit breaker is heavier. The center of gravity of the handcart is always in the middle. The clamping connection between the groove and the rib is stable and firm, and when the lifting plate lifts up the pallet, the four bolts are inserted to ensure the levelness of the pallet.

2. The lifting mechanism of the present invention is equipped with a locking device. When working, press the pressure rod, and one end of the wire tightens the pressure relief mechanism of the hydraulic cylinder, so that the pressure relief switch is locked, preventing misuse during the transfer process from causing heavy weight. Breakers tipped or even dropped.

3. The lifting mechanism of the present invention is also provided with a damper, and the damper is symmetrically arranged in the middle of the bottom frame. After the vehicle frame is lowered, the protrusion touches the upper end of the damper, and the upward elastic force of the damper slows down its descent to achieve deceleration. , to ensure that the pallet and the components on the pallet are placed firmly on the ground.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is a three-dimensional schematic diagram of a vehicle frame of the present invention.

Fig. 2 is a three-dimensional schematic diagram of the transfer pallet of the present invention.

Fig. 3 is a schematic diagram of the clamping of ribs on the vehicle frame to the transfer tray according to the present invention.

Fig. 4 is a schematic diagram of the docking disc of the vehicle frame of the present invention where the bolts are inserted into the transfer pallet.

Fig. 5 is a schematic diagram of the extended state of the vehicle frame of the present invention.

Fig. 6 is a schematic diagram of a folded state of the vehicle frame of the present invention.

Fig. 7 is a front view of the stretched state of the vehicle frame of the present invention.

Fig. 8 is a schematic diagram of the locking device of the present invention.

Reference signs: 100, vehicle frame, 110, lifting plate, 111, rib, 112, bolt, 120, lifting mechanism, 121, outer rod, 121-1, boss, 122, connecting rod, 123, inner rod, 130, bottom frame, 140, wheel, 150, hydraulic cylinder, 151, foot switch, 152, pressure relief handle, 160, handle, 200, transfer tray, 210, track, 211, retaining column, 220, support frame, 221 , spacer, 230, groove, 231, opening, 232, stopper, 240, docking disc, 300, locker, 310, pressure rod, 320, spring, 330, wire, 400, damper.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing

As shown in Figure 1, a switchgear circuit breaker transfer trolley includes a vehicle frame 100, the vehicle frame includes a bottom frame 130, a plurality of rollers 140 connected to the bottom of the bottom frame 130, a lifting plate 110 and a The lifting mechanism 130 between the frame 130 and the lifting plate 110 . This elevating mechanism 130 comprises two inner rods 123 arranged symmetrically left and right, two outer rods 121 arranged symmetrically left and right and a hydraulic cylinder 150, the inner rods 123 and the outer rods 121 on the same side are hinged in an X shape, the lower end of the inner rods 123 is connected to the The bottom frame 130 is rotatably connected, the upper end of the inner rod 123 is rotatably and slidably connected with the lifting plate 110, the upper end of the outer rod 121 is rotatably connected with the lifting plate 120, and the lower end of the outer rod 121 is rotatably connected with the bottom frame 130. Sliding connection, a connecting rod 122 is provided between the bottoms of the two inner rods 123, another connecting rod is provided between the bottoms of the two outer rods 121, the cylinder rod of the hydraulic cylinder 150 is hinged with the bottom frame 130, and the telescopic of the hydraulic cylinder 150 The rod is hinged to the connecting rod 122 ; as shown in FIG. 1 and FIG. 5 , the frame 100 also includes a handle 160 located at the front side of the frame 100 , and the lower end of the handle 160 is connected to the bottom frame 130 . The hydraulic cylinder 150 includes a foot switch 151 and a pressure relief handle 152. The foot switch 151 is arranged on the front side of the bottom frame 130 and is drawn out from the bottom of the bottom frame 130. The pressure relief handle 152 is arranged on the handle 160. The pressure relief handle 152 is connected to the disc of the one-way valve of the hydraulic cylinder 150 . Four bolts 112 are arranged around the top surface of the lifting plate 110, and the tops of the bolts 112 are tapered.

As shown in Figure 2, the transfer handcart also includes a transfer tray 200, a pair of rails 210 are provided on the top surface of the transfer tray 200 and a stop post 211 is provided at the end of the rails, and the left and right sides of the bottom of the transfer tray 200 are symmetrically provided with supports. frame 220, two support frames 220 horizontally support the transfer pallet 200, the support frame 220 is located outside the transfer pallet 200, a spacer 221 is provided at the front and rear ends of the top surface of the support frame 220, and the two transfer pallets 200 are stacked , the support frame of the upper transfer tray can be stacked on the pads of the support frame of the lower transfer tray, and different trays can be stacked vertically when not in use. The bottom of the supporting frame 220 is also provided with a rubber foot pad 250 . The bottom surface of the transfer tray 200 is provided with a groove 230 , and the groove 230 runs through the front surface of the transfer tray 200 . As shown in FIG. 3 , docking discs 240 are respectively provided at four corners of the bottom surface of the transfer tray 200 . As shown in Figure 1, the left and right sides of the top surface of the lifting plate 110 are symmetrically provided with elongated ribs 111. The width of the groove 230 is equal, and the distance between the front end surface of the rib 111 and the front end surface of the lifting plate 110 is 23.5 centimeters, which is greater than the 15 centimeters from the rear end surface of the rib 111 to the rear end surface of the lifting plate 110, so that the center of the whole handcart Move to the middle, stable and not easy to tilt during transfer.

As shown in Figure 3, the opening 231 of the groove 230 is a figure-eight shape expanding forward, and the transfer tray 200 is provided with a stopper 232 at the rear end of the groove 230, as shown in Figure 3 and Figure 6, the lift The mechanism 120 is in the folded state, when the handcart is pushed backward, the rib 111 is inserted into the groove 230 through the splayed opening 231 , and the vehicle frame 100 is engaged with the transfer tray 200 . The lifting mechanism 120 extends upwards, and the four bolts 112 are plugged together with the four docking discs 240. As shown in FIG. Shape center, the vehicle frame 100 supports the transfer pallet 200 . A level is provided on the transfer tray 200 . Observe the level and adjust the height of the four bolts 112 to adjust the level of the transfer tray 200 .

As shown in Figures 5 and 7, the lifting mechanism 120 also includes a pair of dampers 400, which are symmetrically arranged in the middle of the bottom frame 130, and are hinged in the X shape of the inner rod 123 and the outer rod 121 on the same side. The connecting rods at the positions are respectively extended outward to form a protrusion 121-1; pull up the pressure relief handle 152, transition from Fig. 5 to Fig. 6, the lifting mechanism 120 is folded downward as shown in the stretched state, and the lifting mechanism 120 descends In the rear section, the boss 121-1 abuts against the damper 400, and the upward elastic force of the damper 400 prevents it from descending, so that the lifting mechanism 120 falls slowly, and the tray and the circuit breaker on the tray are firmly placed on the ground .

As shown in Figure 1 and Figure 8, the lifting mechanism also includes a lock 300, the lock 300 includes a pressure rod 310 and a spring 320 arranged at the rear end of the bottom frame 130, the spring 320 is sleeved on the pressure rod 310, the bottom end of the pressure rod 310 is connected to a wire 330, and the other end of the wire 330 is connected to the disc of the one-way valve of the hydraulic cylinder 150 by a screw, and the pressure rod 310 is pressed, and the wire 330 is in a tensioned state , the other end of which tightens the disc of the one-way valve of the hydraulic cylinder 150, so that the pressure relief handle 152 cannot open the one-way valve of the hydraulic cylinder 150, and the lifting mechanism 130 cannot be lowered to prevent accidental contact with the hydraulic cylinder 150 during transfer. The pressure relief handle 152 poses a risk of the circuit breaker tipping or even falling.

Transfer the transfer handcart to the switch cabinet, open the switch cabinet, adjust the lifting plate 110 to a suitable height, pull the circuit breaker from the track in the switch cabinet, transfer it to the lifting plate 110, press the Locker 300, push the transfer handcart to the corresponding maintenance platform, open the locker 300, pull up the pressure relief handle 152, the lifting plate 110 is folded down to the lowest point, and the transfer tray 200 passes through its bottom support frame 220 Supported on the ground, the vehicle frame 100 is pulled out backward to complete a transfer of the circuit breaker.

In this embodiment, the wheel 140 is a solid rubber wheel. The transfer tray 200 and the vehicle frame 100 are made of steel material, and the surface is treated with antirust.

The part transferred this time is a circuit breaker. In real life, according to the different components in the switch cabinet, different transfer trays can be equipped accordingly. The transfer tray can be used in conjunction with the frame. Stacked vertically to maximize space saving in the switch room.

The above is only a preferred embodiment of the present invention, so the scope of the present invention cannot be limited accordingly, that is, the equivalent changes and modifications made according to the patent scope of the present invention and the content of the specification should still be covered by the present invention within range.

Claims (10)

1. A switchgear circuit breaker transfer handcart, comprising a vehicle frame, the vehicle frame includes a bottom frame, a plurality of rollers connected to the lower part of the bottom frame, a lifting plate and a lifting plate arranged between the bottom frame and the lifting plate The mechanism is characterized in that it also includes a plurality of transfer trays, the left and right sides of the bottom of the transfer tray are symmetrically provided with support frames, the two support frames support the tray horizontally, the support frames are located outside the transfer tray, and the upper transfer tray The support frame can be stacked on the support frame of the lower transfer tray. The bottom surface of the transfer tray is provided with a groove, which runs through the front end of the tray. The ribs extend in the front-to-back direction, the distance between the two ribs is equal to the width of the groove on the bottom surface of the transfer tray, and the groove is clamped with the rib. 2. A switchgear circuit breaker transfer handcart as claimed in claim 1, characterized in that: the front and rear ends of the top surface of the support frame are provided with a spacer, when the two transfer trays are stacked, the support frame of the upper transfer tray It is supported on the pads of the support frame of the lower transfer tray, and the bottom of the support frame is also provided with rubber foot pads. 3. A switchgear circuit breaker transfer handcart as claimed in claim 1, characterized in that: the opening of the groove is a figure-eight shape expanding forward, and the transfer tray is provided with a stopper at the rear end of the groove . 4. A switchgear circuit breaker transfer handcart as claimed in claim 1, characterized in that: the distance between the front end of the rib and the front end of the lifting plate is greater than the distance between the rear end of the rib and the rear end of the lifting plate . 5. A switchgear circuit breaker transfer handcart as claimed in claim 1, characterized in that: the top surface of the transfer tray is provided with a pair of rails and a stop post is provided at the end of the rails. 6. A switchgear circuit breaker transfer handcart as claimed in claim 1, characterized in that: the bottom surface of the tray is respectively provided with docking discs at four corners, and the docking discs are in the shape of an inverted bowl; Four bolts are arranged on the lifting plate, the tops of the bolts are conical, and the four bolts are inserted into the four docking discs respectively. 7. A switchgear circuit breaker transfer handcart as claimed in claim 1, characterized in that: the lifting mechanism includes two inner rods symmetrically arranged left and right, two outer rods arranged symmetrically left and right and a hydraulic cylinder, the same side of the The inner rod and the outer rod are rotatably hinged in an X shape, the lower end of the inner rod is rotatably connected with the bottom frame, the upper end of the inner rod is rotatably and slidably connected with the lifting plate, and the upper end of the outer rod is rotatably connected with the lifting plate, The lower end of the outer rod is rotatably and slidingly connected to the bottom frame, a connecting rod is arranged between the bottoms of the two inner rods, the cylinder rod of the hydraulic cylinder is hinged to the bottom frame, and the telescopic rod of the hydraulic cylinder is hinged to the connecting rod; The vehicle frame also includes a handle, the handle is located at the front side of the vehicle frame, and the lower end of the handle is connected with the bottom frame. 8. A switchgear circuit breaker transfer handcart as claimed in claim 7, characterized in that: the hydraulic cylinder includes a foot switch and a pressure relief handle, the foot switch is arranged on the front side of the bottom frame, by The bottom of the bottom frame is led out, the pressure relief handle is arranged on the handle, and the pressure relief handle is connected with the disc of the one-way valve of the hydraulic cylinder. 9. A switchgear circuit breaker transfer handcart as claimed in claim 7, characterized in that: the lifting mechanism also includes a lock, the lock includes a pressure rod and a spring arranged at the rear end of the bottom frame, The spring is sleeved on the pressing rod, the bottom end of the pressing rod is connected with a wire, and the other end of the wire is connected with the disc of the one-way valve of the hydraulic cylinder. 10. A switchgear circuit breaker transfer handcart as claimed in claim 7, characterized in that: the lifting mechanism also includes a pair of dampers, the dampers are symmetrically arranged in the middle of the bottom frame, the inner rod and the inner rod on the same side The connecting rods at the X-shaped pivot joints of the outer rod extend outward respectively to form a protruding post, and the protruding post abuts against the damper during its descent.