CN105244788B - The special lifting service kit of handcart circuit breaker in a kind of switch gear room - Google Patents

Abstract

The invention provides a special lifting and maintenance tool for a handcart circuit breaker in a switch room, comprising a base for providing support; a vertical rod installed on the upper end of the base; a force arm, one end of the force arm is connected to the vertical The top end of the rod is hingedly connected; the hook is connected with the other end of the force arm; and a hydraulic pump is installed between the vertical rod and the force arm for providing lifting force. The special hoisting and maintenance tool for the handcart circuit breaker in the switch room provided by the invention has changed the current situation that conventional cranes, forklifts and other large-scale hoisting machinery cannot enter the switch room for maintenance of the handcart circuit breaker. When entering and exiting the switch room, it can be folded, and carried and moved by reducing its volume; when the special lifting maintenance tool is moved to the switch room, it can be unfolded according to the need to realize the maintenance of the opponent's circuit breaker.

Description

A special lifting and maintenance tool for handcart circuit breakers in the switch room

technical field

The invention belongs to the technical field of maintenance devices, in particular, the invention relates to a special hoisting and maintenance tool for a handcart circuit breaker in a switch room.

Background technique

Handcart circuit breakers are frequently used electrical equipment in switch rooms, and their number is on the rise. According to relevant statistics, 30% of the defects of the handcart circuit breaker are at the bottom of the handcart circuit breaker. These defects include the mechanical parts in the chassis, the electrical circuit, and the insulating rods, arc extinguishing chambers, buffers, etc. at the bottom of the circuit breaker. , When dealing with such defects, it is necessary to transfer the circuit breaker from the handcart to the ground or put it down on a fixed platform. Since the circuit breaker is made of all metal, the weight of a single unit is 180-250kg, and the height of the handcart is about 80cm, and the indoor space of the switch is narrow and surrounded by live equipment, large lifting machinery such as cranes and forklifts cannot enter, so When the above-mentioned defects occur in the car circuit breaker, maintenance personnel are required to manually remove the handcart circuit breaker from the handcart and put it down for maintenance work. During the handling process, at least 6 maintenance personnel are required to cooperate, and it is very easy to lose their hands, resulting in serious consequences of breaking the equipment and injuring the maintenance personnel. This work has great potential safety hazards.

Now there are some lifting and maintenance devices about circuit breakers on the market, such as the patent document with the application date of December 11, 2009, the application number 200920144399.5, and the name "Lifting Device for High Current and High Voltage Circuit Breaker". The board body is provided with screw holes that can be installed on the frame of a high-current high-voltage AC circuit breaker. The suspension board body is a right-angled triangle. The middle part of the suspension board body is hollowed out to form three lifting points at different positions. The two right-angle sides of the hanging plate body are provided with flanging perpendicular to the plane of the hanging plate body; the lifting device of the high-current high-voltage circuit breaker adopted in this patent document, because of its triangular structure, makes the safety performance of the hanging plate reliable, High stability, the weight of the lifting circuit breaker is up to 800Kg, and the middle part of the hanging plate is hollowed out to reduce the weight of the lifting plate and make it easy to install; however, it can be directly obtained from the patent document that the lifting device of the patent document is only used For hoisting the circuit breaker, there is no information worth learning about the maintenance of the circuit breaker. Another example is the patent document with the application date of December 16, 2011, the application number 201120531587.0, and the title "Installation Device for Circuit Breaker Chassis Vehicle". , and the channel-shaped vertical columns with opposite slots. There is an air cylinder or oil cylinder between the two columns. The air cylinder or oil cylinder is fixedly connected with a lifting frame. , improve production efficiency; but this installation device is only suitable for installing circuit breakers, and cannot be used for reference in the maintenance of handcart circuit breakers in the switch room. The space in the switch room is narrow and there are live equipment around it. Installation device) and other large lifting machinery cannot enter.

Contents of the invention

The purpose of the present invention is to provide a special hoisting and maintenance tool for handcart circuit breakers in the switch room to at least solve the technical problem in the prior art that large hoisting machines such as cranes and forklifts cannot enter the switch room for maintenance of handcart circuit breakers.

In order to solve the above problems, the present invention provides a special lifting and maintenance tool for handcart circuit breakers in the switch room, and its technical scheme is as follows:

A special hoisting and maintenance tool for a handcart circuit breaker in a switch room, comprising a base for providing support; a vertical rod installed on the upper end of the base; a force arm, one end of the force arm and the top end of the vertical rod a hinge connection; a hook connected with the other end of the moment arm; and a hydraulic pump installed between the vertical rod and the moment arm for providing lifting force.

The special lifting and maintenance tool for the handcart circuit breaker in the switching room as above is further preferably: further comprising a plurality of universal wheels, and the universal wheels are arranged at the lower end of the base.

The above-mentioned special lifting and maintenance tool for handcart circuit breakers in the switch room is further preferably: it also includes a plurality of brakes, and the plurality of brakes are set in one-to-one correspondence with the plurality of universal wheels, which are used to control the universal wheels. Limit to the wheel.

As in the above-mentioned special lifting and maintenance tool for handcart circuit breakers in the switch room, it is further preferred that: the base includes a support base; a support base, which is hingedly connected with the support base; The support brackets are limited.

As in the above special lifting and maintenance tool for handcart circuit breakers in the switch room, it is further preferred that: a limit platform is provided on the support base to limit the position of the folded support support.

As for the special lifting and maintenance tool for the handcart circuit breaker in the switch room above, it is further preferred that: the support base is a frame structure composed of four branch pipes, one end of the second branch pipe and the third branch pipe are fixedly connected to the first branch pipe, and the second branch pipe is fixedly connected to the first branch pipe. The other ends of the second branch pipe and the third branch pipe are connected with the fourth branch pipe.

As in the above special lifting and maintenance tool for handcart circuit breakers in the switch room, it is further preferred that: the distance between the second branch pipe and the third branch pipe between the first branch pipe is smaller than the distance between the second branch pipe and the third branch pipe. The distance between the branch pipes and the fourth branch pipes.

As for the special lifting and maintenance tool for the handcart circuit breaker in the switch room, it is further preferred that: the support support is two support rods, one of the support rods is hingedly connected with the second branch pipe, and the other one of the support The rod is hingedly connected to the third branch pipe.

As in the above special lifting and maintenance tool for handcart circuit breakers in the switch room, it is further preferred that the moment arm is a telescopic moment arm.

As for the special hoisting and maintenance tool for handcart circuit breakers in the switching room, it is further preferred that the hydraulic pump is a manual hydraulic pump.

Analysis shows that compared with the prior art, advantages and beneficial effects of the present invention are:

1. The special hoisting and maintenance tool for the handcart circuit breaker in the switch room provided by the present invention has changed the current situation that conventional cranes, forklifts and other large-scale hoisting machinery cannot enter the switch room for maintenance of the handcart circuit breaker. When entering and exiting the switch room, it can be folded and transported and moved by reducing its volume; when the special lifting maintenance tool is moved to the switch room, it can be unfolded according to the need to realize the inspection and maintenance of the circuit breaker of the opponent . When the maintenance tool actually lifts the circuit breaker, unfolding the folded part can stably lift and lower the circuit breaker to the maintenance platform to complete the maintenance work. This greatly reduces the number of maintenance personnel, reduces the risk of staff being injured, and improves work efficiency.

Two, the plurality of universal wheels provided by the present invention can move the special lifting and maintenance tool when needed.

3. In the present invention, the base is divided into the support base and the support support, so as to provide sufficient supporting force when the special lifting and maintenance tool is used, and save space when the special lifting and maintenance tool is not in use .

4. The present invention sets the support base as a frame structure, which can reduce the overall weight of the special lifting and maintenance tool while meeting the strength requirements.

Description of drawings

Fig. 1 is a schematic structural view (in use) of a special hoisting and overhauling tool for a handcart circuit breaker in a switch room according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view (folded) of the special hoisting and overhauling tool for the handcart circuit breaker in the switching room according to the preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of a supporting base in a preferred embodiment of the present invention.

In the figure, 1-hydraulic pump; 2-moment arm; 3-universal wheel; 4-support base; 41-limiting platform; 42-first branch pipe; 421-first fixed point; 422-second fixed point ; 43-the second branch pipe; 44-the third branch pipe; 45-the fourth branch pipe; Two hinged shafts.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the special hoisting and maintenance tool for handcart circuit breaker in the switch room of the preferred embodiment of the present invention mainly includes a base for providing support; a vertical rod 6 installed on the upper end of the base; arm 2, arm 2 One end of one end is hingedly connected with the top of the pole 6; the hook 7 is connected with the other end of the arm 2; and the hydraulic pump 1 is installed between the pole 6 and the arm 2 for providing lifting force. In the present invention, the moment arm 2 and the vertical rod 6 are hingedly connected together through the second hinge shaft 10 .

In a word, the special hoisting and maintenance tool for the handcart circuit breaker in the switch room provided by the present invention can be used on site, is easy to carry, and has the characteristics of reliability and practicality. In the present invention, the vertical rod 6 and the force arm 2 are connected in a hinged manner, and a hydraulic pump 1 is connected between the vertical rod 6 and the force arm 2, so that the hydraulic rod of the hydraulic pump 1 can be extended to raise Or lower the arm 2 to meet the actual needs of the handcart. Furthermore, when not in use, the hydraulic rod of the hydraulic pump 1 can be completely retracted into the body of the hydraulic pump 1. At this time, a folding setting is formed to reduce the occupancy. space; the present invention also saves manpower, shortens maintenance time and improves work efficiency.

In order to facilitate the movement of the special lifting and maintenance tool of the present invention, as shown in Figure 1, the present invention also includes a plurality of universal wheels 3, which are arranged at the lower end of the base. In this way, when it is necessary to move the special lifting and maintenance tool, as long as the vertical pole 6 or the base is pushed, the movement of the whole special lifting and maintenance tool can be realized. Lift and overhaul tools to move. It is further preferred that a plurality of brakes (not shown) are further included, and the plurality of brakes are set in one-to-one correspondence with the plurality of universal wheels 3 for limiting the position of the universal wheels 3 . In this way, when the special lifting and maintenance tool needs to be moved, the brake can be released from the limitation of the universal wheel 3, and the movement of the special lifting and maintenance tool can be implemented; The maintenance tool is fixed, and the universal wheel 3 is limited by the brake, so that the special lifting maintenance tool can be fixed.

The special lifting and maintenance tools are used when they are used, and when they are not used. When using them, the support space of the base should be large to provide sufficient support; but when they are not used, the problem of saving space should be considered; based on this, As shown in Figures 1 and 2, the base of the present invention includes a support base 4, which is used to provide main support; a support base 5, which is hingedly connected with the support base 4, and which is used to provide Auxiliary support; and limit shaft 9, used to limit the support base 5 when the support base 4 and the support base 5 are placed in parallel (that is, when the support base 5 acts as an auxiliary support). In the present invention, the support base 4 and the support base 5 are hingedly connected together through the first hinge shaft 8 . As shown in FIG. 1 and FIG. 2 , preferably, a limit platform 41 is provided on the support base 4 to limit the position of the folded support base 5 . In order to be able to realize the movement of the special lifting maintenance tool when the support base 5 is placed flat or folded, as shown in Figures 1 and 2, there are six universal wheels 3 of the present invention, four of which are arranged on the support base. The bottom of the seat 4; the other two are arranged at the end of the support stand 5.

On the premise that the strength requirements can be met, how to reduce the weight should be considered. Based on this, as shown in FIGS. There are two fixed points (i.e. the first fixed point 421 and the second fixed point 422); the first branch pipe 42 is preferably divided into three parts by the two fixed points; the second branch pipe 43, one end and the first branch pipe 42 One fixed point is fixed to realize the connection between the second branch pipe 43 and the first branch pipe 42; the third branch pipe 44, one end is fixed at another fixed place of the first branch pipe 42 to realize the connection between the third branch pipe 44 and the first branch pipe 43; Two ends of the branch pipe 45 and the fourth branch pipe 45 are respectively fixedly connected with the other end of the second branch pipe 43 and the other end of the third branch pipe 44 . Further preferably, the distance between two fixed points of the first branch pipe 42 is 50 cm, and the length of the fourth branch pipe 45 is 90 cm. Setting in this way (that is, opening-type setting) can meet the overall strength requirement. The supporting base 5 of the present invention is two supporting rods, one supporting rod is hingedly connected with the second branch pipe 43 , and the other supporting rod is hingedly connected with the third branch pipe 44 . The reason why the present invention designs the support base 5 as two support rods can fold the support base 5 upward while the moment arm 2 is folded down. The two foldable designs make the entire special lifting maintenance tool take up space. It is small and can be moved flexibly in a small space.

In order to realize that the moment arm 2 will not touch the ground when it is folded down, and to enable the hook 7 to reach an optimal hooking position, the moment arm 2 of the present invention is a telescopic moment arm. In this way, the control of the hook 7 can be realized by controlling the expansion and contraction of the arm 2 under the condition that the base is fixed. Preferably, the moment arm 2 includes a base rod (not shown) and a telescopic rod (not shown), the telescopic rod is slidably inserted into the base rod, and the hook 7 is hooked at the protruding end of the telescopic rod. Under the telescopic situation of combining force arm 2, the maximum hoisting height of the present invention reaches 235cm.

In the present invention, the hydraulic pump 1 is a manual hydraulic pump. In a narrow space, the manual hydraulic pump is more conducive to the control of the situation on site. The energy of the hydraulic pump of the present invention can reach 8t; the main body of the hydraulic pump 1 is made of square steel, and the length and width of the main body of the hydraulic pump 1 are 60mm and 70mm respectively. In order to enable the hydraulic pump to provide sufficient energy, the body thickness of the hydraulic pump 1 of the present invention is 3mm. In this way, when the hydraulic pump 1 is folded, the characteristics of flexible transportation and small occupied space can be realized.

In the present invention, both the first hinged shaft 8 and the second hinged shaft 10 are steel shaft pins with a diameter of 15 mm, which can fully ensure the load-bearing strength. Furthermore, in order to be able to bear enough strength, the universal wheel 3 of the present invention is a steel universal wheel with a diameter of 8 cm.

As shown in Fig. 1 and Fig. 2, the working process of the present invention is described in further detail.

When the special hoisting and maintenance tool for the handcart circuit breaker in the switch room is idle, as shown in Figure 2, the telescopic rod of the force arm 2 retracts into the base rod of the force arm 2, and at the same time the extension rod of the hydraulic pump 1 retracts into the hydraulic pump 1; the support base 5 is folded up by the action of the first hinge shaft 8, and falls on the limit platform 41 of the support base 4; it can be seen that the present invention uses a manual hydraulic pump 1 as the power The output, using the principle of leverage to carry out lifting work, can be kept at the required height; 6 universal wheels 3 with brake function are used at the bottom of the base (4 universal wheels 3 are on the ground after folding) to achieve stable support; force The arm 2 has 4 adjustment positions, which can be flexibly adjusted according to the weight of the lifting object; the overall design of the shaft pin combination (the first hinge shaft 8 and the second hinge shaft 10) is adopted, which is detachable, flexible and convenient; the main bearing The force support (support base 4 and support base 5) adopts a foldable design, takes up little space, and can move flexibly in a narrow space.

When the special lifting and maintenance tool for handcart circuit breaker in the switch room is working, as shown in Figure 1, the two universal wheels 3 at the bottom of the support support 5 touch the ground to achieve a more reliable support; the hydraulic rod of the hydraulic pump 1 The height is stretched out, and the moment arm 2 is stretched out according to the required length, and the work can be completed according to the specific situation; when the work is completed, the special lifting maintenance tool for the handcart circuit breaker in the switch room can be folded into an idle state.

Analysis shows that compared with the prior art, advantages and beneficial effects of the present invention are:

1. The special hoisting and maintenance tool for the handcart circuit breaker in the switch room provided by the present invention has changed the current situation that conventional cranes, forklifts and other large-scale hoisting machinery cannot enter the switch room for maintenance of the handcart circuit breaker. When entering and exiting the switch room, it can be folded and transported and moved by reducing its volume; when the special lifting maintenance tool is moved to the switch room, it can be unfolded according to the need to realize the inspection and maintenance of the circuit breaker of the opponent . When the maintenance tool actually lifts the circuit breaker, unfolding the folded part can stably lift and lower the circuit breaker to the maintenance platform to complete the maintenance work. This greatly reduces the number of maintenance personnel, reduces the risk of staff being injured, and improves work efficiency.

Two, the present invention is provided with a plurality of universal wheels 3, can move special-purpose lifting maintenance tool when needed.

3. The present invention sets the base as the support base 4 and the support support 5, so that when the special lifting and maintenance tool is used, sufficient supporting force is provided, and when the special lifting and maintenance tool is not in use, the occupied space is saved.

4. The present invention sets the support base 4 as a frame structure, which can reduce the overall weight of the special lifting and maintenance tool while meeting the strength requirements.

It can be known from common technical knowledge that the present invention can be realized through other embodiments without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are embraced by the present invention.

Claims (1)

1. a kind of special lifting service kit of handcart circuit breaker in switch gear room, which is characterized in that including：

Pedestal, for providing support；

Upright bar, mounted on the upper end of the pedestal；

The arm of force, one end of the arm of force and the top of the upright bar are articulated and connected；

Hook, connect with the other end of the arm of force；With

Hydraulic pump, between the upright bar and the arm of force, for providing lifting force；

Multiple universal wheels are further included, the universal wheel is arranged on the lower end of pedestal；Multiple brakes, multiple brakes with it is more A universal wheel is arranged in a one-to-one correspondence, for being limited to the universal wheel；The universal wheel is the steel ten thousand of diameter 8cm To wheel；Wherein；

The hydraulic pump is hydraulic hand-pump；The ontology of the hydraulic pump is made for square steel, the length and width difference of the ontology of hydraulic pump For 60mm and 70mm, the body thickness of hydraulic pump is 3mm；The energy of hydraulic pump reaches 8t；

The pedestal includes：

Support base；

Support carriers are articulated and connected with the support base；With

Limit shaft, for support when the support carriers limit；

Limiting stand is equipped in the support base, is limited for the support carriers of doubling poststack；

The support base is frame structure, is made of four branch pipes, one end of the second branch pipe and third branch pipe and the first branch pipe It is fixedly connected, the other end of the second branch pipe and third branch pipe is connect with the 4th branch pipe；

The distance of second branch pipe and the third branch pipe between first branch pipe be less than second branch pipe with it is described Distance of the third branch pipe between the 4th branch pipe；Second branch pipe and the third branch pipe are between first branch pipe Distance for 50cm, the distance of second branch pipe and the third branch pipe between the 4th branch pipe is 90cm；

The support carriers are two supporting rods, and a supporting rod is articulated and connected with second branch pipe, described in another Supporting rod is articulated and connected with the third branch pipe；The limit shaft is located at the junction position of the second branch pipe and the 4th branch pipe；Branch Support group seat and support carriers are hingedly connected together by the first articulated shaft；First articulated shaft is located on the second branch pipe, and first Articulated shaft is between the 4th branch pipe and the first branch pipe；Limiting stand is located on the second branch pipe, and limit dais is in the first articulated shaft And first between branch pipe；It is disposed with limiting stand, the first articulated shaft and limit shaft from left to right on the second branch pipe；

The quantity of universal wheel is six, wherein four lower sections for being arranged on support base, remaining two are arranged on support carriers End；

One end of the arm of force and the steel axis that articulated shaft used in the top articulated connection of the upright bar is a diameter of 15mm Pin, the support carriers and the steel pivot pin that articulated shaft used in support base articulated connection is a diameter of 15mm；

The arm of force is the scalable arm of force；The arm of force includes matrix bar and telescopic rod, and telescopic rod is slideable to be plugged in matrix bar, It is articulated at the external part of telescopic rod；In the case where combining can the stretching of the arm of force, handcart circuit breaker in the switch gear room The maximum sling height of special lifting service kit reaches 235cm；

The application method of the special lifting service kit of handcart circuit breaker is as follows in the switch gear room：

When the special lifting service kit of handcart circuit breaker is idle in switch gear room, the telescopic rod of the arm of force bounces back to the matrix bar of the arm of force It is interior, while the extension bar of hydraulic pump is bounced back in the ontology of hydraulic pump；Support carriers are up rolled over by the effect of the first articulated shaft, Fall the limit dais in support base；Using manually hydraulic pump as power output, slinging work is carried out using lever principle, It is positively retained at the height of needs；Six universal wheels with brake function are employed in base bottom, it is universal for four after folding Wheel lands, and realizes firm support；The arm of force has 4 adjusting positions, according to the size of lifting weight of object, can flexibly be adjusted Section；Entirety employs pivot pin modular design：First articulated shaft and the second articulated shaft, detachably, flexibly and easily；Support base and Support carriers use foldable design, occupy little space, can flexibly be moved in small space；

When the special lifting service kit of handcart circuit breaker works in switch gear room, two universal wheels of support carriers bottom land, Realize more firm supporting role；The height that the hydraulic stem of hydraulic pump is as needed is stretched out, and arm of force length as needed is stretched Go out, you can complete work as the case may be；After the completion of work, and can be by the special lifting of handcart circuit breaker in switch gear room When service kit is folded into idle state.