阅读说明：本技术 一种可快速安装的塑壳断路器 (Moulded case circuit breaker capable of being installed quickly ) 是由 陈超 卜权 吕敏 张绚 殷杰 于 2021-08-17 设计创作，主要内容包括：本发明涉及一种可快速安装的塑壳断路器,包括塑壳断路器外壳及用于将塑壳断路器安装于固定架上的安装组件,安装组件包括导向滑动设置于塑壳断路器外壳上的推板、连接于推板后侧的滑套及安装于滑套内的限位组件,限位组件包括导向滑动设置于滑套内的顶杆及连接于顶杆后端的连臂组件,连臂组件在顶杆的顶推作用下可沿塑壳断路器上下方向展开,滑套可滑动至固定架的固定安装孔内,并通过在固定架后侧展开连臂组件对固定架进行限位。本发明通过设置安装组件,可实现塑壳断路器的快速安装,提高了塑壳断路器的安装效率,同时可对塑壳断路器进行有效限位及固定；通过设置缓冲组件,可对塑壳断路器起到一定的缓冲作用,避免塑壳断路器损坏。(The invention relates to a quickly-installed molded case circuit breaker, which comprises a molded case circuit breaker shell and an installation assembly used for installing the molded case circuit breaker on a fixed frame, wherein the installation assembly comprises a push plate arranged on the molded case circuit breaker shell in a guiding sliding manner, a sliding sleeve connected to the rear side of the push plate and a limiting assembly arranged in the sliding sleeve, the limiting assembly comprises a push rod arranged in the sliding sleeve in a guiding sliding manner and an arm connecting assembly connected to the rear end of the push rod, the arm connecting assembly can be unfolded along the vertical direction of the molded case circuit breaker under the pushing action of the push rod, the sliding sleeve can slide into a fixed installation hole of the fixed frame, and the fixed frame is limited by unfolding the arm connecting assembly at the rear side of the fixed frame. According to the invention, the installation assembly is arranged, so that the plastic case circuit breaker can be quickly installed, the installation efficiency of the plastic case circuit breaker is improved, and meanwhile, the plastic case circuit breaker can be effectively limited and fixed; through setting up buffering subassembly, can play certain cushioning effect to moulded case circuit breaker, avoid moulded case circuit breaker to damage.)

1. The utility model provides a moulded case circuit breaker that can install fast which characterized in that: the mounting assembly comprises a push plate, a sliding sleeve and a limiting assembly, wherein the push plate is arranged on the shell of the molded case circuit breaker in a guiding sliding manner and is positioned on the front side of the mounting plate, the sliding sleeve is connected to the rear side of the push plate, the limiting assembly is arranged in the sliding sleeve, a guiding through hole is formed in the mounting plate, is matched with the sliding sleeve and is arranged along the front-rear direction of the molded case circuit breaker, the sliding sleeve is embedded in the guiding through hole and can slide back and forth along the guiding through hole, a cavity for installing the limiting assembly is formed in the sliding sleeve, the limiting assembly comprises a push rod and an arm connecting assembly, the push rod is arranged in the cavity in a guiding sliding manner, the arm connecting assembly is connected to the rear end of the push rod, the front end of the push rod penetrates through the push plate, and the arm connecting assembly can be unfolded along the vertical direction of the molded case circuit breaker under the pushing action of the push rod, the rear end of the sliding sleeve is provided with an avoiding opening which can enable the connecting arm assembly to expand outwards, the fixing frame is provided with a fixing mounting hole, the sliding sleeve can slide into the fixing mounting hole of the fixing frame, and the connecting arm assembly is expanded at the rear side of the fixing frame to limit the fixing frame.

2. A quick-installable molded case circuit breaker according to claim 1, wherein: the arm connecting component comprises a first connecting arm, a second connecting arm, a third connecting arm and a fourth connecting arm, a guide groove is formed in a cavity of the sliding sleeve, the first connecting arm and the second connecting arm are connected in the guide groove in a guiding sliding mode, the front end of the first connecting arm and the front end of the second connecting arm are hinged to the rear end of the ejector rod, the rear end of the first connecting arm and the rear end of the second connecting arm are hinged to the front end of the third connecting arm and the front end of the fourth connecting arm respectively, the rear end of the third connecting arm and the rear end of the fourth connecting arm are arranged at the rear end of the sliding sleeve as free ends, and a torsion spring is arranged on the third connecting arm and the fourth connecting arm.

3. A quick-installable molded case circuit breaker according to claim 1, wherein: a first spring is connected between the push plate and the mounting plate, and the first spring is sleeved outside the sliding sleeve.

4. A quick-installable molded case circuit breaker according to claim 1, wherein: the cavity of sliding sleeve includes first cavity and second cavity, and first cavity is linked together with the second cavity, ejector pin direction sliding connection is in first cavity, even the arm subassembly sets up in the second cavity, the size of first cavity sets up to make even the arm subassembly card locate first cavity rear end.

5. A quick-installable molded case circuit breaker according to claim 1, wherein: the moulded case circuit breaker shell is provided with a slide rail, a slide groove matched with the slide rail is formed in the push plate, and the push plate is matched with the slide rail through the slide groove and is arranged in a sliding mode relative to the moulded case circuit breaker shell in a guiding mode.

6. A quick-installable molded case circuit breaker according to claim 1, wherein: the mounting panel rear side is connected with buffering subassembly, and buffering subassembly is used for being connected with the mount, cushions moulded case circuit breaker.

7. A quick-installable molded case circuit breaker according to claim 6, wherein: the buffer assembly comprises a conjunction block, a conjunction baffle, an installation rod and a second spring, wherein the buffer groove is formed in the rear side of the installation plate, the front end of the installation rod is fixedly connected into the buffer groove and arranged along the front and rear directions of the molded case circuit breaker, the conjunction baffle is fixedly connected to the front end of the conjunction block, the conjunction block and the conjunction baffle are sleeved on the installation rod and can slide back and forth along the installation rod, the conjunction block is used for being in conjunction connection with the fixed installation hole of the fixing frame, the conjunction baffle can be clamped at the front end of the fixed installation hole of the fixing frame and can be clamped at the rear end of the buffer groove, the second spring is sleeved on the installation rod and is positioned between the installation plate and the conjunction baffle, and the front end of the second spring is embedded into the buffer groove.

8. A quick-installable molded case circuit breaker according to claim 6 or 7, wherein: the moulded case circuit breaker shell includes front side panel and rear side panel, and front side panel passes through fastener fixed connection with the rear side panel, moulded case circuit breaker's upper and lower extreme is formed with respectively the mounting panel, and be provided with installation component and buffering subassembly on the mounting panel of upper and lower extreme respectively.

9. A quick-installable molded case circuit breaker according to claim 8, wherein: the utility model discloses a buffer component's installation structure, including mounting panel, slide rail, front side panel, back side panel, mount frame, mounting panel, front side panel is last to be located the mounting panel front side and is formed with the preceding mounting platform that is used for setting up the installation component, the slide rail sets up on preceding mounting platform, it is formed with the back mounting platform that is used for setting up buffer component to lie in the mounting panel rear side on the back side panel, the mounting platform top behind the mount can imbed.

10. A quick-installable molded case circuit breaker according to claim 1, wherein: and the mounting plate is also provided with a through threaded hole for matching with a fastener to fix the molded case circuit breaker.

Technical Field

The invention relates to the technical field of molded case circuit breakers, in particular to a molded case circuit breaker capable of being quickly installed.

Background

Along with present electric power system is more and more advanced now, intelligent moulded case circuit breaker's use is more and more extensive, especially uses in the great industry of electric power demand, can guarantee electric power system's normal operating to a great extent to and when electric power system goes wrong, the position of relevant electric power system of timely investigation for electric power maintainer can be timely solution electric power system's problem.

In the prior art, although the intelligent molded case circuit breaker is more and more popular, when being installed, the intelligent molded case circuit breaker still follows the installation method of the old molded case circuit breaker, needs to be aligned with a fixing frame in the electric power box, and is fixed on the fixing frame through a plurality of bolts by a power maintenance worker.

Therefore, in view of the above problems, there is a need for an intelligent molded case circuit breaker that can achieve quick installation.

Disclosure of Invention

The invention mainly aims to overcome the defects of the prior art, and provides the quickly-installed molded case circuit breaker which can solve the problems of complicated installation and low efficiency of the old molded case circuit breaker, can realize quick installation of the molded case circuit breaker, improves the installation efficiency of the molded case circuit breaker, and can effectively limit and fix the molded case circuit breaker.

The invention adopts the following technical scheme:

a quickly-installed molded case circuit breaker comprises a molded case circuit breaker shell and an installation assembly arranged on the molded case circuit breaker shell and used for installing the molded case circuit breaker on a fixed frame, wherein an installation plate is formed on the molded case circuit breaker shell, the installation assembly comprises a push plate, a sliding sleeve and a limiting assembly, the push plate is arranged on the molded case circuit breaker shell in a guiding and sliding mode and is positioned on the front side of the installation plate, the sliding sleeve is connected to the rear side of the push plate, the limiting assembly is arranged in the sliding sleeve, a guide through hole is formed in the installation plate, the guide through hole is matched with the sliding sleeve and is arranged along the front-back direction of the molded case circuit breaker, the sliding sleeve is embedded in the guide through hole and can slide back and forth along the guide through hole, a cavity for installing the limiting assembly is formed in the sliding sleeve, the limiting assembly comprises a push rod and a connecting arm assembly, the front end of the push rod is arranged in the cavity in a guiding and sliding mode, the connecting arm assembly is connected to the rear end of the push rod, the connecting arm assembly can be unfolded along the vertical direction of the molded case circuit breaker under the pushing action of the ejector rod, an avoiding opening capable of enabling the connecting arm assembly to be unfolded outwards is formed at the rear end of the sliding sleeve, a fixed mounting hole is formed in the fixing frame, the sliding sleeve can slide into the fixed mounting hole of the fixing frame, and the connecting arm assembly is unfolded at the rear side of the fixing frame to limit the fixing frame.

Preferably, link the arm subassembly and include first, second, third, fourth and link the arm, be provided with the guide way in the cavity of sliding sleeve, first, second link arm direction sliding connection in the guide way, first, second link arm front end articulates in the ejector pin rear end, and first, second link arm rear end links the arm front end with third, fourth respectively and articulates, and third, fourth link arm rear end sets up in the sliding sleeve rear end as the free end, and third, fourth link and install the torsional spring on the arm.

Preferably, a first spring is connected between the push plate and the mounting plate, and the first spring is sleeved outside the sliding sleeve.

Preferably, the cavity of sliding sleeve includes first cavity and second cavity, and first cavity is linked together with the second cavity, ejector pin direction sliding connection is in first cavity, link arm subassembly sets up in the second cavity, the size of first cavity sets up to make link arm subassembly card locate first cavity rear end.

Preferably, a sliding rail is arranged on the molded case circuit breaker shell, a sliding groove matched with the sliding rail is formed in the push plate, and the push plate is matched with the sliding rail through the sliding groove and is arranged in a sliding mode relative to the molded case circuit breaker shell.

Preferably, the mounting plate rear side is connected with the buffering subassembly, and the buffering subassembly is used for being connected with the mount, cushions moulded case circuit breaker.

Preferably, the buffering component comprises an engagement block, an engagement baffle, an installation rod and a second spring, a buffering groove is formed in the rear side of the installation plate, the front end of the installation rod is fixedly connected into the buffering groove and arranged along the front-rear direction of the molded case circuit breaker, the engagement baffle is fixedly connected to the front end of the engagement block, the engagement block and the engagement baffle are sleeved on the installation rod and can slide back and forth along the installation rod, the engagement block is used for being engaged with the fixed installation hole of the fixing frame, the engagement baffle can be clamped at the front end of the fixed installation hole of the fixing frame and can be clamped at the rear end of the buffering groove, the second spring is sleeved on the installation rod and is positioned between the installation plate and the engagement baffle, and the front end of the second spring is embedded into the buffering groove.

Preferably, the molded case circuit breaker housing includes a front side panel and a rear side panel, the front side panel and the rear side panel are fixedly connected by a fastener, the upper and lower ends of the molded case circuit breaker are respectively formed with the mounting plate, and the mounting plate of the upper and lower ends are respectively provided with the mounting assembly and the buffering assembly.

Preferably, the front panel is located the mounting panel front side and is formed with the preceding mounting platform that is used for setting up the installation component, the slide rail sets up on preceding mounting platform, it is formed with the back mounting platform that is used for setting up buffering subassembly to lie in the mounting panel rear side on the rear panel, the mount can imbed back mounting platform top.

Preferably, the mounting plate is further provided with a through threaded hole for fixing the molded case circuit breaker in cooperation with a fastener.

As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

firstly, the invention arranges the mounting component on the molded case circuit breaker, when the molded case circuit breaker is mounted, the molded case circuit breaker is aligned to the fixed frame in the electric power box by manpower and exerts certain force to preliminarily clamp the molded case circuit breaker on the fixed frame, then the push plate is pushed to drive the slide sleeve to slide into the fixed mounting hole of the fixed frame along the guide through hole, then the push plate pushes the ejector rod inwards, the ejector rod slides in the slide sleeve to drive the connecting arm component to unfold along the vertical direction of the molded case circuit breaker, the first connecting arm and the second connecting arm slide along the guide groove, the third connecting arm and the fourth connecting arm are forced to turn outwards and are matched with the torsion springs arranged on the third connecting arm and the fourth connecting arm to form a right angle shape, thereby realizing preliminary limit of the molded case circuit breaker, and finally limit of the molded case circuit breaker is realized by connecting the external bolt with the thread hole, make fixing on the mount that it can be stable to need twist a plurality of bolts in proper order and carry out the current situation fixed when can avoiding traditional installation moulded case circuit breaker, can realize moulded case circuit breaker's quick installation, the installation is simple and convenient, has improved moulded case circuit breaker's installation effectiveness.

Second, through being connected first spring between push pedal and mounting panel, when the manpower inwards promoted the push pedal, the push pedal can inwards compress first spring, and first spring atress can increase its self elastic potential energy, and after the manpower disappeared, the elastic potential energy reaction push pedal that first spring produced through its self for the push pedal slides in the opposite direction, thereby drives the even arm subassembly that has warp and hugs closely the rear side at the mount, can realize effectively spacing to moulded case circuit breaker.

And thirdly, the push plate is arranged on the slide rail in a guiding and sliding manner, so that the limit of the moving path of the mounting assembly can be realized, the structure is more stable, and the operation is simple and convenient.

Fourthly, the buffering assembly is arranged on the molded case circuit breaker, when an electric power overhaul worker aligns the molded case circuit breaker with the fixing frame and applies force, the fitting block can be connected in the fixed mounting hole of the fixing frame in a fitting mode, the fitting baffle is tightly attached to the front side of the fixing frame, meanwhile, the second spring is arranged, the molded case circuit breaker can obtain certain buffering under the action of external force, the buffering assembly is limited through the mounting rod, the moving tracks of the fitting block and the fitting baffle can be kept perpendicular to the mounting plate of the molded case circuit breaker all the time, when the molded case circuit breaker is further limited on the fixing frame through the external bolt, the second spring can play a certain buffering role on the molded case circuit breaker, and the damage to the shell of the molded case circuit breaker caused by the excessive tightening of the bolt is avoided.

Fifthly, the upper end and the lower end of the molded case circuit breaker are both provided with the mounting assembly and the buffer assembly, and the front mounting platform and the rear mounting platform are arranged, so that the structure is compact, and the molded case circuit breaker is more balanced and stable in mounting.

Drawings

Fig. 1 is a perspective view of an installation structure of a molded case circuit breaker according to embodiment 1 of the present invention at a first viewing angle when the molded case circuit breaker is installed on a fixed frame;

fig. 2 is a perspective view of an installation structure of the molded case circuit breaker according to embodiment 1 of the present invention at a second viewing angle when the molded case circuit breaker is installed on a fixed frame;

fig. 3 is a perspective view of an installation structure of the molded case circuit breaker according to embodiment 1 of the present invention at a third viewing angle when the molded case circuit breaker is installed on a fixed frame;

fig. 4 is a perspective view of the molded case circuit breaker of embodiment 1 of the present invention;

fig. 5 is a sectional structure perspective view of the molded case circuit breaker of embodiment 1 of the present invention mounted on a fixed frame;

FIG. 6 is a sectional view showing a connecting structure of a push plate and a slide sleeve according to embodiment 1 of the present invention;

FIG. 7 is an enlarged view at A in FIG. 4;

fig. 8 is an enlarged view at B in fig. 5.

In the figure: 1. the circuit breaker comprises a molded case circuit breaker shell, 11 parts of a front side panel, 111 parts of a front mounting platform, 1111 parts of a sliding rail, 12 parts of a rear side panel, 121 parts of a rear mounting platform, 13 parts of a mounting plate, 131 parts of a guide through hole, 132 parts of a buffer groove, 133 parts of a threaded hole, 2 parts of a fixing frame, 21 parts of a fixing mounting hole, 3 parts of a mounting assembly, 31 parts of a push plate, 311 parts of a sliding groove, 32 parts of a sliding sleeve, 321 parts of a first cavity, 322 parts of a second cavity, 3221 parts of a guide groove, 323 parts of an avoidance opening, 33 parts of a limiting assembly, 331 parts of a push rod, 332 parts of an arm assembly, 3321 parts of a first connecting arm, 3322 parts of a second connecting arm, 3323 parts of a third connecting arm, 3324 parts of a fourth connecting arm, 34 parts of a first spring, 4 parts of a buffer assembly, 41 parts of a matching block, 42 parts of a baffle plate, 43 parts of a mounting rod and 44 parts of a second spring.

Detailed Description

The invention is further described below by means of specific embodiments.

Example 1

Referring to fig. 1 to 8, the molded case circuit breaker capable of being quickly installed according to the present invention includes a molded case circuit breaker housing 1, an installation assembly 3 disposed on the molded case circuit breaker housing 1 for installing the molded case circuit breaker on a fixed frame 2, and a buffering assembly 4 for buffering the molded case circuit breaker. The molded case circuit breaker housing 1 includes a front panel 11 and a rear panel 12, and the front panel 11 and the rear panel 12 are fixedly connected by bolts. The upper end and the lower end of the shell 1 of the molded case circuit breaker are respectively provided with an installation plate 13, the upper end and the lower end of the front side panel 11 and the lower end of the rear side panel 12 are respectively extended to form an installation side plate, and the installation plate 13 is formed by mutually abutting the installation side plates of the front side panel 11 and the rear side panel 12.

The mounting assembly 3 includes a push plate 31 slidably disposed on the molded case circuit breaker housing 1 and located in front of the mounting plate 13, a sliding sleeve 32 connected to the rear of the push plate 31, a position limiting assembly 33 mounted in the sliding sleeve 32, and a first spring 34. Preceding mounting platform 111 that is used for setting up installation component 3 is formed at the mounting panel 13 front side on the front side panel 11, two parallel arrangement's of fixedly connected with slide rail 1111 on the preceding mounting platform 111, set up respectively with two slide rail 1111 matched with two spouts 311 on the push pedal 31, push pedal 31 is connected through spout 311 and slide rail 1111 cooperation, realizes spacing to installation component 3 removal route. Offer on the mounting panel 13 and match with the sliding sleeve 32 and follow the direction of the front and back guide through hole 131 that moulded case circuit breaker set up, the sliding sleeve 32 inlays and locates in the guide through hole 131 and can follow the guide through hole 131 and slide from beginning to end, be formed with the cavity that is used for installing spacing subassembly 33 in the sliding sleeve 32. Spacing subassembly 33 sets up in ejector pin 331 in the cavity and connects in the even arm subassembly 332 of ejector pin 331 rear end including the direction slip, ejector pin 331 front end runs through push pedal 31 and sets up, even arm subassembly includes first link 3321, second link arm 3322, third link arm 3323, fourth link arm 3324, first link arm 3321, second link arm 3322 front end articulate in ejector pin 331 rear end, first link arm 3321, second link arm 3322 rear end respectively with third link arm 3323, fourth link arm 3324 front end articulate, third link arm 3323, fourth link arm 3324 rear end sets up in sliding sleeve 32 rear end as the free end, third link arm 3323, fourth link arm 3324 both ends and install the torsional spring. The cavity of the sliding sleeve 32 comprises a first cavity 321 and a second cavity 322, the first cavity 321 is communicated with the second cavity 322, the top rod 331 is connected in the first cavity 321 in a guiding and sliding manner, the arm connecting assembly 332 is arranged in the second cavity 322, the side wall of the second cavity 322 is provided with symmetrically arranged guide grooves 3221, and the first connecting arm 3321 and the second connecting arm 3322 are connected in the guide grooves 3221 in a guiding and sliding manner; the size of the first cavity 321 is smaller than the cross-sectional size of the second cavity 322, the arm connecting component 332 in the second cavity 322 cannot slide into the first cavity 321 along with the push rod 331 under the influence of the cross-sectional size of the first cavity 321, and the arm connecting component 332 is limited by the guide groove 3221, so that the arm connecting component 332 can be clamped at the rear end of the first cavity 321. Under the pushing action of the top rod 331, the first connecting arm 3321 and the second connecting arm 3322 slide along the guide groove 3221 in the connecting arm assembly 332, and the third connecting arm 3323 and the fourth connecting arm 3324 can deflect and expand upwards and downwards under the action of the torsion spring in the sliding process, and finally form a right angle with the first connecting arm 3321 and the second connecting arm 3322. The rear end of the sliding sleeve 32 is provided with an avoiding opening 323 which can enable the connecting arm assembly 332 to expand outwards, the fixed frame 2 is provided with a fixed mounting hole 21, the sliding sleeve 32 can slide into the fixed mounting hole 21 of the fixed frame 2, and the connecting arm assembly 332 is expanded at the rear side of the fixed frame 2 to limit the fixed frame 4. One end of the first spring 34 is fixedly connected to the rear side of the push plate 31, the other end of the first spring is fixedly connected to the front side of the mounting plate 13, and the first spring 34 is sleeved outside the sliding sleeve 32.

The buffer assembly 4 is connected to the rear side of the mounting plate 13, and the buffer assembly 4 is used for being connected with the fixing frame 2 and buffering the molded case circuit breaker. The buffer assembly comprises a matching block 41, a matching baffle 42, an installation rod 43 and a second spring 44, a buffer groove 132 is formed in the rear side of the installation plate 13, the front end of the installation rod 43 is fixedly connected into the buffer groove 132 and arranged in the front-rear direction of the molded case circuit breaker, the matching baffle 42 is fixedly connected to the front end of the matching block 41, the matching block 41 and the matching baffle 42 are sleeved on the installation rod 43 and can slide back and forth along the installation rod 43, the matching block 41 is used for matching and connecting with the fixed installation hole 21 of the fixed frame 2, the matching baffle 42 can be clamped at the front end of the fixed installation hole 21 of the fixed frame 2 and can be clamped at the rear end of the buffer groove 132, the second spring 44 is sleeved on the installation rod 43 and is positioned between the installation plate 13 and the matching baffle 42, and the front end of the second spring 44 is embedded into the buffer groove 132. A rear mounting platform 121 for arranging the buffer component 4 is formed on the rear side panel 12 behind the mounting plate 13, and the fixing frame 2 can be embedded above the rear mounting platform 121 and is connected with the buffer component 4 in a matching manner.

The middle part of the mounting plate 13 is provided with a through threaded hole 133 for further fixing the molded case circuit breaker in cooperation with the bolt.

In this embodiment, the mounting plates 13 at the upper and lower ends of the molded case circuit breaker housing 1 are respectively provided with a mounting assembly 3 and a buffer assembly 4. The upper end mounting plate 13 and the lower end mounting plate 13 are respectively and correspondingly provided with a group of mounting assemblies 3, each group of mounting assemblies 3 comprises a push plate 31, two sliding sleeves 32 are symmetrically arranged on the push plate 31, limiting assemblies 33 are arranged in the two sliding sleeves 32, and first springs 34 are sleeved outside the two sliding sleeves 32. Two groups of buffer components 4 are correspondingly arranged on the upper end mounting plate 13 and the lower end mounting plate 13 respectively.

Referring to fig. 1 to 8, the method for installing a molded case circuit breaker capable of being quickly installed according to the present invention includes: when the molded case circuit breaker is installed, an electric power overhaul worker holds the molded case circuit breaker in hand, aligns the molded case circuit breaker with the fixing frame 2, and applies a certain force to enable the installation assembly 3 to be preliminarily clamped on the fixing frame 2, so that preliminary fixing of the molded case circuit breaker is realized; then, the push plate 31 is manually pushed, so that the push plate 31 drives the sliding sleeve 32 to slide to the fixed mounting hole 21 of the fixing frame 2 along the guide through hole 131, and after the push plate 31 is completely pushed, the push rod 331 is manually pushed inwards, the push rod 331 slides in the sliding sleeve 32 to drive the connecting arm assembly 332 to slide, at this time, the first connecting arm 3321 and the second connecting arm 3322 slide along the guide groove 3221, and the third connecting arm 3323 and the fourth connecting arm 3324 are forced to turn over outwards and are matched with torsion springs arranged at the tail ends of the third connecting arm 3323 and the fourth connecting arm 3324, and finally, the first connecting arm 3321, the second connecting arm 3322, the third connecting arm 3323 and the fourth connecting arm 3324 are in right-angle shapes, so that further limiting of the molded case circuit breaker is realized, and at this time, the molded case circuit breaker is fixed without external force intervention. And then the final limit of the molded case circuit breaker is realized by the external bolt and the threaded hole 133 in threaded connection, so that the molded case circuit breaker can be stably fixed on the fixing frame 2. In the installation of installation component 3, when the manpower promoted the push pedal 31 inwards and drive the sliding sleeve 32 to slide to the fixed mounting hole 21 of mount 2 in, the push pedal 31 can inwards compress the first spring 34, and the first spring 34 atress can increase its self elastic potential energy, after the manpower disappeared, the elastic potential energy reaction push pedal 31 of first spring 34 through its self production for push pedal 31 slides to the opposite direction, thereby drive the even arm subassembly 332 of warp and hug closely at the rear side of mount 2, realize effective spacing to moulded case circuit breaker.

Buffering subassembly 4 agrees with mount 2 through agreeing with piece 41 before moulded case circuit breaker installs to by agreeing with baffle 42 realization to agreeing with the spacing of piece 41, later under the condition of artificial application of force, play certain cushioning effect to moulded case circuit breaker by second spring 44, avoid moulded case circuit breaker shell to produce the damage. In the installation, when the manpower aims at the circuit breaker mount 2 and carries out preliminary fixed, agree with the fixed mounting hole 21 of piece 41 and mount 2 and correspond, and agree with and connect in the fixed mounting hole 21 of mount 2, and agree with the inseparable laminating of the front end lateral wall of baffle 42 and mount 2, when manpower drive push pedal 31 inwards removal afterwards, second spring 44 receives the extrusion and compresses, thereby realize the cushioning effect to moulded case circuit breaker, and compression process has increased the elastic potential energy of second spring 44 to a certain extent, after the manpower disappears, second spring 44 cooperates the spacing firmly at mount 2 rear side with the even arm subassembly 332 that has warp through its self elastic potential energy and first spring 34, thereby be favorable to the fixed of follow-up bolt.

Example 2

This example differs from example 1 in that: in this embodiment, the buffering component 4 is not provided, and two fitting blocks are fixedly connected to the rear side of the mounting plate 13, and symmetrically arranged on the mounting plate 13 and used for fitting with the fixed mounting holes 21 of the fixing frame 2; the front end of the conjunction block is fixedly connected with a conjunction baffle which can be clamped at the front end of the fixed mounting hole 21 of the fixing frame 2 and used for limiting the fixing frame 2.

The above description is only two specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of infringing the present invention.