CN211103772U - Spring leaf assembly fixture of static contact - Google Patents

Abstract

The utility model relates to a spring leaf assembly fixture of static contact. In the process of using the spring piece assembling tool for the static contact, the supporting plate can be pushed by the pushing driving mechanism to enable the static contact to be assembled on the supporting plate to move upwards and to be in pushing contact with the top plate, the top plate pushes the contact finger, the contact finger pushes the spring piece downwards through the step surface of the contact finger to enable the spring piece to move downwards, deformation is generated under the action of the upper inclined surface of the static contact seat and elasticity is generated, the elasticity of the spring piece overcomes the friction force given to the spring piece by the inclined surface to enable the spring piece to move downwards along the inclined surface to be lapped on the outer circumferential surface of the static contact seat, and the assembly of the. Use the screwdriver to choose the spring leaf lower extreme in proper order from the inclined plane and push down the operation that touches the finger and compare with prior art, the utility model discloses a frock can once only realize the assembly of all spring leaves on the static contact, simple structure, and the operation of being convenient for requires lowerly to assembly technical ability, can improve the assembly efficiency of spring leaf, reduces assembly workman's intensity of labour.

Description

Spring leaf assembly fixture of static contact

Technical Field

The utility model relates to a spring leaf assembly fixture of static contact.

Background

The stationary contact is one of the important parts of the circuit breaker. As shown in fig. 1 and 2, in an assembly process of the fixed contact in the medium and low voltage circuit breaker, a grid 102 needs to be sleeved on a fixed contact base 101, 20 contact fingers 103 are inserted between the grid 102 and the fixed contact base 101, the 20 contact fingers 103 are located in grooves on the grid 102, 20 spring pieces 104 are inserted between the corresponding contact fingers 103 and the grid 102, upper ends of the spring pieces 104 are clamped on step surfaces of the contact fingers 103, in a downward insertion process of the spring pieces 104, lower ends of the spring pieces 104 are blocked by inclined surfaces on the fixed contact base 101, so that the spring pieces 104 are not installed in place, and an assembly worker needs to press the contact fingers 103 downwards to move the spring pieces 104 downwards after picking the spring pieces 104 off the inclined surfaces by using a screwdriver until lower ends of the spring pieces 104 can be lapped on outer circumferential surfaces of the fixed contact base 101, so as to complete assembly of the spring pieces 104.

Because the spring pieces are made of high-strength spring steel, when the spring pieces are picked off the inclined plane by using a screwdriver, great force is needed, and an assembler is required to pick 20 spring pieces off the inclined plane one by using the screwdriver during assembling a static contact, so that the assembling efficiency is low and the labor intensity is high; and the contact fingers need to be prevented from swinging inwards to cause the spring pieces to be separated from the step surfaces of the spring contact fingers in the process of pressing down the contact fingers, so that the requirement on assembly skills is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spring leaf assembly fixture of static contact to the spring leaf assembly efficiency who solves among the prior art static contact is low, and intensity of labour is big and to the technical problem that assembly technical ability required height.

In order to achieve the above object, the utility model discloses the spring leaf assembly fixture's of static contact technical scheme is: the spring leaf assembly fixture of static contact includes: a base; the pushing driving mechanism is arranged on the base; the guide rod is arranged on the base; the supporting plate is used for supporting and placing a static contact to be assembled, is positioned above the pushing driving mechanism and can reciprocate up and down along the guide rod; the top plate is fixedly arranged relative to the base and is provided with a lower side plane which is used for being in press fit with the upward moving static contact to be assembled so as to enable the contact fingers to be stressed downwards; the inner supporting barrel or the inner supporting shaft is arranged inside the static contact to be assembled to limit the contact finger to swing inwards after being pressed, and the upper end of the spring piece is prevented from being separated from the step surface of the contact finger to the outer side of the contact finger after the contact finger is pressed.

The utility model has the advantages that: the static contact that will insert interior support tube or interior back shaft is placed on the frock, and operation top pushes away actuating mechanism, makes the backup pad rebound, touches and indicates and the roof contact, under the roof pressure effect of roof, touches and indicates to push down the spring leaf, so that the spring leaf moves down, takes place deformation and production elasticity under the effect of stationary contact seat upper inclined plane, makes the elasticity of spring leaf overcome the frictional force that the inclined plane gave the spring leaf and make the spring leaf follow the inclined plane rebound with the overlap joint on the outer periphery of stationary contact seat, accomplishes the assembly of spring leaf, the utility model discloses an assembly of all spring leaves on the static contact can once only be realized to the frock, simple structure, the operation of being convenient for, it is lower to the assembly skill requirement, can improve the assembly efficiency of spring leaf, reduces assembly workman's intensity of labour.

Further, the mounting seat is used for being matched with the fixed contact to be assembled in a positioning mode, and the mounting seat is placed on the supporting plate in the process of assembling the fixed contact spring piece by using the tool. The static contact can be directly placed on the tool through the mounting seat so as to realize the mounting and positioning of the static contact to be assembled, and the mounting seat is convenient to use and operate.

Furthermore, a fixing block used for being matched with the pushing driving mechanism in a positioning mode is arranged at the center of the lower surface of the supporting plate. The fixed block is matched with the pushing driving mechanism in a positioning mode, so that the position of the pushing driving mechanism can be determined, and the pushing driving mechanism can be conveniently positioned and placed.

Further, the pushing driving mechanism is a hydraulic jack. Hydraulic jack motion is steady, easy operation, can reduce assembly workman's intensity of labour, is convenient for the utility model discloses in realize.

Furthermore, a limiting structure is arranged on the guide rod, and the supporting plate can be supported and limited at a fixed height position above the pushing driving mechanism by the limiting structure, so that the pushing driving mechanism can be conveniently taken and placed. The limiting structure supports and limits the supporting plate at a fixed height position above the pushing driving mechanism, and can be used for taking out or placing the pushing driving mechanism, so that the pushing driving mechanism is convenient to take and place, and the tool is convenient to use and operate.

Furthermore, the limiting structure is a limiting step shaft section arranged on the guide rod, and a step surface on the limiting step shaft section is in supporting fit with the lower side plane of the supporting plate. The limiting step shaft section is simple in structural form, the guide rod can be conveniently machined, and the supporting plate can be well limited.

Furthermore, a bushing is arranged on the supporting plate and sleeved on the guide rod through the bushing. The supporting plate is provided with a bush and is sleeved on the guide rod through the bush, so that the supporting plate can be prevented from being abraded in the process of up-and-down reciprocating movement along the guide rod.

Furthermore, a buckle for holding by a person is arranged on the inner side wall of the inner support cylinder or a thread section is arranged on the inner side wall of the inner support cylinder. The inner support barrel is simple in structure, saves materials, is convenient to process, and is provided with the handle or the thread section on the inner side wall of the inner support barrel, so that the inner support barrel can be conveniently held by a person, and the spring piece can be conveniently taken out from the static contact after being assembled.

Furthermore, the outer diameter of the inner support cylinder or the inner support shaft is enough to prop open the contact finger, and a step surface on the contact finger forms a horizontal plane. The structure of the inner support barrel or the inner support shaft is arranged, so that the contact fingers can only deflect outwards after being pressed, the movement of the contact fingers is guided, the step surfaces on the contact fingers form a horizontal plane according to the size requirement, the spring piece cannot be separated from the step surfaces to the outer sides of the contact fingers after being pressed, and the spring piece can move downwards after being pressed.

Drawings

Fig. 1 is a schematic structural diagram of a static contact in the prior art;

fig. 2 is a schematic internal structure diagram of the stationary contact in fig. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic view of a partial structure of the static contact shown in fig. 1 when the lower end of the spring piece is clamped on the inclined surface;

fig. 5 is a schematic structural view of an embodiment of a spring piece assembling tool for a static contact according to the present invention in a using process;

FIG. 6 is a longitudinal cross-sectional view of FIG. 5;

in the figure, 101-static contact seat, 102-grid, 103-contact finger, 104-spring plate, 1-supporting leg, 2-bottom plate, 3-hydraulic jack, 4-fixed block, 5-supporting plate, 6-mounting seat, 7-guide rod, 8-top plate, 9-bushing, 10-static contact and 11-internal support cylinder.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

Introducing the utility model discloses a before the spring leaf assembly fixture embodiment of static contact, introduce earlier and be applicable to the utility model discloses the specific structure of spring leaf assembly fixture's static contact and the utility model discloses a technical concept:

as shown in fig. 1 to 4, the static contact 10 includes a static contact base 101, a grid 102 sleeved outside the static contact base 101, and 20 contact fingers 103 and spring pieces 104 arranged at intervals and located between the grid 102 and the static contact base 101 in a groove of the grid 102, the spring piece 104 is located between the contact fingers 103 and the grid 102, a step surface matched with an upper end of the spring piece in a blocking manner is arranged on the contact fingers 103, an outer circumferential surface arranged in a fitting manner with a lower end of the spring piece 104 is arranged on the static contact base 101, and an inclined surface arranged in a circumferential direction is arranged above the outer circumferential surface to provide guidance for the spring piece 104 when the spring piece 104 is assembled, so that the spring piece 104 is smoothly lapped on the outer circumferential surface of the static contact base 101.

In the process of assembling the static contact 10, the grid 102 is firstly sleeved outside the static contact seat 101 and is in blocking fit with the static contact seat 101 in the up-down direction, the contact fingers 103 are then assembled between the grid 102 and the static contact seat 101, and 20 contact fingers 103 are all located in the grooves on the grid 102 so as to separate the contact fingers 103 from each other, finally, each spring piece 104 is assembled between each contact finger 103 and the grid 102, and the upper end of the spring piece 104 is clamped on the step surface of the contact finger 103, and the lower end of the spring piece 104 is lapped on the outer circumferential surface of the static contact seat 101, as shown in fig. 3.

In the process of inserting the spring piece 104 downwards, the lower end of the spring piece 104 is easily blocked by the inclined surface on the stationary contact base 101, so that the spring piece 104 is not installed in place, as shown in fig. 4, in the prior art, a screwdriver needs to be used for picking the spring piece 104 from the inclined surface in the groove on the lower side of the grid, the contact finger 103 is pressed downwards, the spring piece is moved downwards until the lower end of the spring piece 104 can be lapped on the outer circumferential surface of the stationary contact base 101, and the assembly of the spring piece 104 is completed. The assembly mode has low assembly efficiency, high labor intensity and higher requirement on assembly skills.

And the utility model discloses in adopt the spring leaf assembly fixture of static contact, utilize to push up the top and push away actuating mechanism and will wait that the static contact 10 of assembly moves upward, and make 8 roof pressure contact on the roof touch indicate 103, touch and indicate 103 to push down spring leaf 104, so that spring leaf 104 moves down, take place deformation and produce elasticity under the effect on inclined plane on stationary contact seat 101, the elastic force that makes spring leaf 104 overcome the inclined plane and give spring leaf 104 frictional force and make spring leaf 104 move down along the inclined plane with the overlap joint on the outer periphery of stationary contact seat 101, accomplish the assembly of spring leaf 104.

The utility model discloses a specific embodiment of spring leaf assembly fixture of static contact:

as shown in fig. 5 and 6, the spring piece assembling tool includes a base composed of a supporting leg 1 and a bottom plate 2 located above the supporting leg 1, guide rods 7 are arranged on the base, the guide rods 7 are four and arranged in four corners, each guide rod 7 penetrates through the bottom plate 2 and is in blocking fit with the bottom plate 2 in the up-down direction through a limiting step on the guide rod 7, and the guide rods 7 penetrate through the lower end of the bottom plate 2 and are fastened through nuts so as to fix the guide rods 7 on the base.

The spring piece assembling tool further comprises a supporting plate 5 which is arranged on the guide rod 7 in a penetrating mode and can move back and forth in the vertical direction, a bushing 9 is arranged on the supporting plate 5, and the supporting plate 5 is arranged on the guide rod 7 in a penetrating mode through the bushing 9, as shown in figure 5, so that the supporting plate 5 is prevented from being abraded in the process of moving back and forth in the vertical direction along the guide rod 7.

As shown in fig. 5 and 6, the guide rod 7 is provided with a limiting structure for limiting the downward movement of the support plate 5, and the limiting structure is specifically a limiting step shaft section arranged on the guide rod 7, and the upper step surface of the limiting step shaft section is in fit arrangement with the lower side plane of the support plate 5, so as to support the support plate 5 at a fixed height position on the guide rod 7.

The supporting plate 5 is used for supporting and placing a static contact 10 to be assembled, and the circumferential protrusion is arranged on the lower bottom surface of the static contact seat 101, so that the static contact 10 to be assembled can be placed on the supporting plate 5, the spring piece assembling tool further comprises an installation seat 6 used for being in positioning fit with the static contact 10 to be assembled, the installation seat 6 and the supporting plate 5 are arranged in a split mode, and in the process of assembling the static contact spring piece by using the tool, the installation seat 6 can be directly placed on the supporting plate 5.

As shown in fig. 5 and 6, the spring sheet assembling tool further includes a pushing driving mechanism disposed on the base, the height of the shaft section of the limiting step is required to satisfy the requirement that the supporting plate 5 can be supported and limited above the pushing driving mechanism, that is, the pushing driving mechanism is located below the supporting plate 5, and the supporting plate 5 can move upward along the guide rod 7 under the driving action of the pushing driving mechanism. In this embodiment, the pushing driving mechanism is specifically a hydraulic jack 3, the hydraulic jack is stable in movement and convenient to operate, and a fixing block 4 in positioning fit with the ejection end of the hydraulic jack 3 is arranged at the central position of the lower surface of the supporting plate 5, so that the hydraulic jack 3 can only be placed at the central position corresponding to the supporting plate 5, and the stability of the upward movement process of the supporting plate 5 is facilitated.

In this embodiment, as shown in fig. 5 and 6, a small diameter section is disposed at the top of the guide rod 7, the top plate 8 is mounted on the small diameter section of the guide rod 7 in a penetrating manner, and is limited by a nut disposed at the top of the guide rod 7 to be detached from the guide rod 7, the top plate 8 has a lower side plane disposed opposite to the support plate 5, and in the process of moving the static contact 10 to be mounted upward, the lower side plane of the top plate 8 can be in pressing contact with the contact finger 103, so that the contact finger 103 is pressed downward.

Since the contact finger 103 is located between the stationary contact seat 101 and the grid 102 and located in the groove on the grid 102, when the contact finger 103 is pressed downward, the contact finger 103 moves downward and may deflect radially inward or radially outward of the stationary contact seat 101, and in order to make the contact finger 103 deflect or move downward only radially outward after being pressed to transmit the pressure to the spring plate 104, the spring plate assembly tool further needs to provide an inner support for limiting the radial inward deflection of the contact finger 103 toward the stationary contact seat 101.

In this embodiment, the internal supporting element is specifically an internal supporting tube 11 located at the center of the static contact 10, as shown in fig. 6, the internal supporting tube 11 is configured to be attached to the inner surface of the static contact seat 101, so that the contact finger 103 can only deflect outward after the contact finger 103 is pressed, and the movement of the contact finger 103 is guided. After the inner support tube 11 is inserted into the static contact 10, the height of the inner support tube is not higher than the height of the contact finger 103, the outer diameter of the inner support tube 11 is sufficient to prop open the contact finger 103, and the step surface of the contact finger 103 forms a horizontal surface arranged downwards, so that the spring piece 104 cannot be separated from the step surface to the outer side of the contact finger 103 after being pressed, and the spring piece 104 moves downwards through the step surface after the contact finger 103 is pressed, and deforms and generates elasticity under the action of the upper inclined surface of the static contact seat 101. In other embodiments, the outer diameter of the inner support cylinder can be also sufficient for supporting the contact fingers, the step surfaces of the contact fingers are obliquely arranged towards the inner side, the contact fingers can only deflect towards the outer side after being pressed, the guide effect is realized on the movement of the contact fingers, the spring pieces cannot be separated from the step surfaces towards the outer side of the contact fingers, the spring pieces can move downwards through the step surfaces after the contact fingers are pressed, and deformation and elasticity are generated under the action of the upper inclined surfaces of the static contact seats. In general, the touch finger is not required to swing inwards after being pressed, and the upper end of the spring piece on the step surface of the touch finger is not required to be separated from the outer side of the touch finger.

In the using process of the static contact tool of the embodiment, the mounting base 6 is taken down from the tool, the static contact base 101 is sleeved on the mounting base 6, the grid 102, the contact finger 103, the spring piece 104 and the inner support cylinder 11 are sequentially assembled, then the to-be-assembled static contact 10 provided with the inner support cylinder 11 and the mounting base 6 are placed on the support plate 5 and are close to the middle position of the support plate 5 as much as possible, the hydraulic jack 3 is placed on the base and is opposite to the position of the fixed block 4, the hydraulic jack 3 is operated, the driving end of the hydraulic jack 3 is matched and inserted with the fixed block 4, then the support plate 5 is driven to drive the to-be-assembled static contact base 101 to move upwards until the contact finger 103 of the to-be-assembled static contact 10 is in abutting fit with the top plate 8, the contact finger 103 is pressed downwards under the driving action of the hydraulic jack 3 and the abutting action of the top plate 8, and the contact finger 103 is pressed downwards through the, the spring piece 104 is moved downward to be deformed and generate an elastic force, the elastic force of the spring piece 104 overcomes the friction force of the inclined surface to the spring piece 104, and the spring piece 104 moves downward along the inclined surface of the stationary contact base 101 to be lapped on the outer circumferential surface of the stationary contact base 101, so that the assembly of the spring piece 104 is completed. The spring piece assembling tool for the static contact in the embodiment can be used for assembling all the spring pieces on the static contact at one time, is simple in structure, convenient to operate and low in requirement on assembling skills, and can be used for improving the assembling efficiency of the spring pieces and reducing the labor intensity of assembling workers.

In this embodiment, the mounting base and the supporting plate are arranged separately, so that the mounting base can be taken down and then the static contact to be assembled can be placed, and the static contact to be assembled can be conveniently placed. In other embodiments, the mounting seat may be integrated with the support plate, and the mounting seat is located at the center of the support plate, so that during the use of the tool, the static contact to be assembled may be directly placed at the center of the support plate, so that each contact finger on the static contact is uniformly stressed during the press-fitting process.

In this embodiment, the central point department of putting of backup pad lower surface is provided with the fixed block with hydraulic jack location fit to with the central point department of putting of hydraulic jack location in the backup pad, the location of the hydraulic jack of being convenient for is placed. In other embodiments, the lower surface of the supporting plate can be directly pushed against the lower surface of the supporting plate by using the pushing end of the hydraulic jack without arranging a fixing block.

In this embodiment, the pushing driving mechanism is a hydraulic jack, and the hydraulic jack moves stably and is simple to operate. In other embodiments, the ejection drive mechanism may also be a mechanical jack.

In this embodiment, the guide rod is provided with a limiting structure, and the limiting structure can limit the support of the support plate to a fixed height position above the pushing driving mechanism, so as to facilitate the taking and placing of the pushing driving mechanism. In other embodiments, the support plate may be supported and limited at a fixed height position by the jacking driving mechanism to limit the downward movement of the support plate. In the embodiment, the pushing driving mechanism can be taken out for other use in a mode that the limit structure supports and limits the supporting plate, so that the utilization rate of the pushing driving mechanism is improved.

In this embodiment, limit structure is the spacing step shaft section of setting on the guide bar, the step face on the spacing step shaft section with the cooperation is supported on the downside plane of backup pad, and spacing step shaft section structural style is simple, is convenient for to the processing of guide bar, can play better spacing supporting role to the backup pad. In other embodiments, the limiting structure may be a support beam fixed on two adjacent guide rods, and there are four support beams in total for supporting the whole support plate.

In this embodiment, the backup pad passes through the bush suit on the guide bar, can avoid the backup pad to be worn and torn along guide bar up-and-down reciprocating motion's in-process. In other embodiments, the bushing is not arranged, and lubricating oil is arranged at the assembling position of the support plate and the guide rod, so that the abrasion of the support plate in the process of up-and-down reciprocating movement along the guide rod is reduced.

In the embodiment, the inner support member is the inner support barrel, the inner support member in the form of the inner support barrel saves materials, is simple in structure and convenient to process, and after the spring piece of the static contact is assembled, an assembling worker can attach the inner side wall of the inner support barrel by hand and lift the inner side wall upwards, and the inner support barrel is taken out of the assembled static contact by using the friction force between the hand and the inner side wall of the inner support barrel. In other embodiments, a handle convenient to hold by hand can be further arranged on the inner side wall of the inner support barrel to facilitate the taking out of the inner support barrel, or in other embodiments, a threaded section can be further arranged on the inner side wall of the inner support barrel, and the threaded section is screwed and screwed to lift the threaded rod, so that the inner support barrel is taken out of the assembled static contact. Or in other embodiments, the inner supporting member may also be an inner supporting shaft, and the inner supporting shaft is provided with a threaded hole, so that the inner supporting shaft can be conveniently taken out of the assembled static contact through the screw rod.

Claims (9)

1. The utility model provides a spring leaf assembly fixture of static contact which characterized in that includes:

a base;

the pushing driving mechanism is arranged on the base;

the guide rod is arranged on the base;

the supporting plate is used for supporting and placing a static contact to be assembled, is positioned above the pushing driving mechanism and can reciprocate up and down along the guide rod;

the top plate is fixedly arranged relative to the base and is provided with a lower side plane which is used for being in press fit with the upward moving static contact to be assembled so as to enable the contact fingers to be stressed downwards;

the inner supporting barrel or the inner supporting shaft is arranged inside the static contact to be assembled to limit the contact finger to swing inwards after being pressed, and the upper end of the spring piece is prevented from being separated from the step surface of the contact finger to the outer side of the contact finger after the contact finger is pressed.

2. The tool for assembling the spring piece of the static contact according to claim 1, further comprising a mounting seat for positioning and matching with the static contact to be assembled, wherein the mounting seat is placed on the supporting plate in the process of assembling the static contact spring piece by using the tool.

3. The spring piece assembling tool for the static contact as claimed in claim 1, wherein a fixing block for positioning and matching with the pushing driving mechanism is arranged at the center of the lower surface of the supporting plate.

4. The spring piece assembling tool for the static contact according to any one of claims 1 to 3, wherein the pushing driving mechanism is a hydraulic jack.

5. The spring piece assembling tool for the static contact according to any one of claims 1 to 3, wherein the guide rod is provided with a limiting structure, and the limiting structure can limit the support of the support plate at a fixed height position above the pushing driving mechanism so as to facilitate the taking and placing of the pushing driving mechanism.

6. The spring piece assembling tool for the static contact as claimed in claim 5, wherein the limiting structure is a limiting step shaft section arranged on the guide rod, and a step surface on the limiting step shaft section is in supporting fit with a lower side plane of the support plate.

7. The spring piece assembling tool for the static contact according to any one of claims 1 to 3, wherein a bushing is disposed on the support plate and sleeved on the guide rod through the bushing.

8. The spring piece assembling tool for the static contact according to any one of claims 1 to 3, wherein a handle for being held by a person is arranged on the inner side wall of the inner support cylinder or a thread section is arranged on the inner side wall of the inner support cylinder.

9. The spring piece assembling tool for the static contact according to any one of claims 1 to 3, wherein the outer diameter of the inner support cylinder or the inner support shaft is sufficient to support the contact finger, and a step surface on the contact finger forms a horizontal plane.

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