CN216180197U

CN216180197U - Spring pressing nail pin shaft dismounting device for transformer

Info

Publication number: CN216180197U
Application number: CN202122603263.XU
Authority: CN
Inventors: 吴其亚; 马健
Original assignee: Wujiang Transformer Co Ltd
Current assignee: Wujiang Transformer Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-05
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a spring pressing nail pin shaft dismounting device for a transformer, which comprises: the device comprises a shaft disassembling block arranged on a pressing block of the spring pressing nail and a plurality of hydraulic cylinders arranged on the shaft disassembling block, wherein piston rods of the hydraulic cylinders abut against a supporting plate of the transformer to drive the hydraulic cylinders, the shaft disassembling block is pressed downwards to enable the pressing block to move downwards, the piston rods abut against the supporting plate upwards, and at the moment, a pin shaft is separated from the pressing block. The hydraulic cylinder is used for controlling the lifting of the pressing block, so that the pin shaft can be easily pulled out, the labor is saved, the finishing time of the whole transformer is saved, the defect that scrap iron is generated when the pressing block is rotationally controlled by a pressing nail is avoided, namely, metal dust cannot be generated due to friction in the process of screwing the pressing nail, and the running reliability of the transformer is improved.

Description

Spring pressing nail pin shaft dismounting device for transformer

Technical Field

The utility model relates to the technical field of installation and debugging of transformers, in particular to a spring pressing nail pin shaft dismounting device for a transformer.

Background

The short circuit resistance of the transformer is critical to the reliable operation of the transformer and even the safety of the whole power system. In order to better bear the impact of the sudden short circuit on the coil, a body pressing structure of a spring pressing nail is usually adopted in design.

Referring to fig. 1, the spring pressing pin 10 includes a body 101, a fixing shaft 102 disposed at the center of the body 101, a spring 103 fitted over the fixing shaft 102, and a pressing block 104 disposed at an upper portion of the spring 103. With reference to fig. 1, in a specific using process, the spring pressing nail is fixed in position with the support plate 20 arranged on the transformer body through the adjusting rod, the adjusting rod 30 includes an upper external thread 301, a middle bolt head 302 and a lower convex block 303, the external thread 301 corresponds to a corresponding threaded hole on the support plate 20, the adjusting rod and the support plate 20 are matched to achieve position-adjustable fastening connection, the convex block 303 presses against the pressing block 104 of the spring pressing nail on the lower portion, the bolt head 302 is pulled through a wrench to achieve a relative position of the spring pressing nail relative to the support plate 20, and then the spring 103 of the spring pressing nail guarantees a certain fastening force and buffering.

Before the part provided with the spring pressing nail 10 is placed in a transformer to be fixed, the spring pressing nail needs to be pre-compressed, then a pin shaft is inserted into a pin shaft hole in the side wall of the transformer body 101 to fix the pressing block 104, then the adjusting rod 30 is screwed into the supporting plate 20, the adjusting rod 30 is adjusted to enable the bump 303 to press the pressing block 104, at the moment, the pin shaft needs to be pulled out, the rebound force of the spring is eliminated, the free state of the transformer body caused by retraction is caused, and the short circuit resistance is greatly enhanced.

In the prior art, the method of pulling out the round pin axle is exactly to twist the bolt with the spanner, compress precompressed spring 304 down again, can only lengthen the spanner arm of force under limited manpower, in addition, in the extrusion process, adjust the pole and need rotate relatively, often cause and adjust pole head distortion, lead to easily being damaged in the follow-up use of pole, excessive compression can lead to the buffering of spring pressure nail malfunctioning moreover, at last in the in-process of twisting the bolt head, a little iron fillings can fall out, in the transformer, iron fillings cause great potential safety hazard to normal operating.

Disclosure of Invention

The utility model overcomes the defects that the time and labor are wasted and scrap iron is easy to generate to influence the safe operation of a transformer when a bolt is screwed by hands to take out a pin shaft in the prior art, and provides a spring pressing nail pin shaft dismounting device for the transformer, which adopts the technical scheme that: the utility model provides a spring is pressed nail round pin axle dismounting device for transformer, includes: the hydraulic device comprises a shaft disassembling block arranged on a pressing block of the spring pressing nail and a plurality of hydraulic cylinders arranged on the shaft disassembling block, wherein piston rods of the hydraulic cylinders abut against a supporting plate of the transformer to drive the hydraulic cylinders, the shaft disassembling block is pressed downwards to enable the pressing block to move downwards, the piston rods abut against the supporting plate upwards, and at the moment, the pin shafts are separated from the pressing block.

In a preferred embodiment of the utility model, the shaft detaching block comprises an upper platform for arranging the hydraulic cylinder, a lower platform for pressing the pressing block downwards and a through hole penetrating through the upper platform and the lower platform, the adjusting rod arranged between the spring pressing nail and the support plate penetrates through the through hole, and the through hole is matched with the adjusting rod; the through hole is positioned on the part of the upper platform and used for accommodating the bolt head of the adjusting rod, the aperture of the through hole positioned on the part of the lower platform is in clearance fit with the diameter of a lug on the adjusting rod, and the upper platform and the lower platform are integrally formed.

In a preferred embodiment of the present invention, the upper surface of the upper platform is formed in a circular shape, and the hydraulic cylinders are uniformly distributed in pairs on the upper surface of the upper platform.

In a preferred embodiment of the utility model, the axle-detaching block is formed by splicing two axle-detaching pieces positioned on the left side and the right side of the support plate corresponding to the bolt; the two ends of the shaft detaching piece are provided with fixing lugs for splicing, and the two shaft detaching pieces are fixedly connected with the corresponding fixing lugs to realize splicing.

In a preferred embodiment of the utility model, the hydraulic cylinders are two hydraulic cylinders driven by the same hydraulic pump, and the hydraulic cylinders are positioned at the positions of the fixing lugs connected with the two shaft detaching pieces.

In a preferred embodiment of the utility model, the fixing lug is a threaded pore plate, when the shaft detaching pieces are spliced, the pore plates of the two shaft detaching pieces are aligned, and a screw penetrates through the pore plates to fix the two shaft detaching pieces.

In a preferred embodiment of the utility model, a cushion block for heightening is arranged between the hydraulic cylinder and the shaft detaching block.

The utility model solves the defects in the background technology, and has the following beneficial effects:

(1) the hydraulic cylinder is used for controlling the lifting of the pressing block, so that the pin shaft can be easily pulled out, the labor is saved, the finishing time of the whole transformer is saved, the defect that scrap iron is generated when the pressing block is rotationally controlled by a pressing nail is avoided, namely, metal dust cannot be generated due to friction in the process of screwing the pressing nail, and the running reliability of the transformer is improved.

(2) The shaft disassembling block is arranged in the hydraulic cylinder, downward pressure can be balanced, the downward pressing process is more stable, the hydraulic cylinders are not aligned to the pressing block in the arrangement position, and the pressing nails are arranged between the two hydraulic cylinders and have the added size larger than the inner diameter of the body, so that the piston rods of the hydraulic cylinders are not conveniently connected with the pressing block directly. Through setting up the axle piece of tearing open, apply the pressure of pneumatic cylinder for the briquetting, its installation is very convenient to can also guarantee that its stress point is balanced, prevent because the pneumatic cylinder sets up the briquetting slope that the asymmetry caused, the connection oil pressure of two pneumatic cylinders is the same, can guarantee the flexible length complete coincidence of two pneumatic cylinders.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a spring-loaded pin of the prior art;

fig. 2 is a schematic view illustrating a pressing state of the dismounting device for the spring nail-pressing pin shaft according to an embodiment of the present invention;

fig. 3 is a schematic view of a shaft detaching block of the detaching device for the spring nail-pressing pin shaft according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating a released state of the dismounting device for the spring nail-pressing pin shaft according to an embodiment of the present invention.

The reference numerals are as follows:

10. pressing the nail by a spring; 101. a body; 102. a fixed shaft; 103. a spring; 104. briquetting; 20. a support plate; 30. adjusting a rod; 301. an external thread; 302. a bolt head; 303. a bump; 20. a support plate; 30. adjusting a rod; 302. a bolt head; 401. a hydraulic cylinder; 402. disassembling the shaft block; 4021. disassembling the shaft sheet; 4022. an upper platform; 4023. a lower platform; 403. fixing the ear; 4031. an orifice plate; 4032. a screw; 501. and (7) a pin shaft.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings and only the basic structure of the present invention is illustrated schematically, so that only the structure related to the present invention is shown, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the utility model, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 2, the utility model discloses a spring pressing nail pin shaft dismounting device for a transformer, which comprises: the shaft detaching block 402 is arranged on the pressing block 104 of the spring adjusting rod 30, the hydraulic cylinders 401 are arranged on the shaft detaching block 402, piston rods of the hydraulic cylinders 401 abut against the supporting plate 20 of the transformer to drive the hydraulic cylinders 401, the shaft detaching block 402 is pressed downwards to enable the pressing block 104 to move downwards, the piston rods abut against the supporting plate 20 upwards, and the pin shaft 501 is separated from the pressing block 104 at the moment.

Specifically, the brace 20 is a fixed part of the transformer, and the two ends of the adjusting rod 30 are provided with a hydraulic cylinder 401, and when the pressing block 104 needs to be pressed down, the hydraulic cylinder 401 is directly placed between the shaft detaching block 402 and the brace 20.

In the utility model, the hydraulic cylinder 401 is used for compressing the spring 103, so that time and labor are saved, metal dust is not generated, and the normal operation of the transformer is ensured. In addition, the shaft detaching block 402 is arranged, downward pressure can be balanced, the pressing process is more stable, and the hydraulic cylinders 401 are not arranged to be aligned with the pressing block 104, the adjusting rods 30 are arranged between the two hydraulic cylinders 401, and the sum of the sizes of the adjusting rods is larger than the inner diameter of the body 101, so that the telescopic ends of the hydraulic cylinders 401 are not conveniently connected with the pressing block 104. Through setting up the axle piece 402 of tearing open, exert the pressure of pneumatic cylinder 401 for briquetting 104, its installation is very convenient to can also guarantee that its stress point is balanced, prevent because the briquetting 104 slope that pneumatic cylinder 401 set up asymmetric and cause.

With continued reference to fig. 2, the axle-detaching block 402 comprises an upper platform 4022 for arranging the hydraulic cylinder 401, a lower platform 4023 for pressing down the press block 104, and a through hole penetrating through the upper platform 4022 and the lower platform 4023, wherein the adjusting rod 30 arranged between the spring press nail 10 and the fulcrum plate 20 penetrates through the through hole, and the through hole is matched with the adjusting rod 30; the through hole is located in the upper platform 4022 and used for accommodating the bolt head 302 of the adjusting rod 30, the hole diameter of the through hole located in the lower platform 4023 is in clearance fit with the diameter of the projection 303 on the adjusting rod 30, and the upper platform 4022 and the lower platform 4023 are integrally formed.

Referring to fig. 2-3, in one embodiment of the utility model, the upper surface of the upper platform 4022 is circular and the hydraulic cylinders 401 are distributed in pairs on the upper surface of the upper platform 4022. This is to balance the force, i.e. to prevent the shaft-detaching block 402 from tilting due to uneven force.

Referring to fig. 3, in an embodiment of the present invention, the shaft-detaching block 402 is formed by splicing two shaft-detaching blades 4021 located on the left and right sides of the support plate 20 corresponding to the bolt head 302; two ends of the shaft detaching piece 4021 are provided with fixing lugs 403 for splicing, and the two shaft detaching pieces 4021 fixedly connect the corresponding fixing lugs 403 to realize splicing and fixing.

Specifically, one end of the shaft detaching plate 4021 is fixedly connected with a threaded orifice plate 4031, and the other end of the shaft detaching plate 4021 is fixedly connected with a threaded orifice plate 4031; when the two split shaft tabs 4021 are spliced together, the two threaded aperture plates 4031 are aligned and fixedly attached by screws 4032.

Here, when the two threaded hole plates 4031 are aligned, they can be directly fixed or disassembled by the screws 4032, when the spring 103 needs to be compressed, the two shaft-disassembling plates 4021 are mounted, and after the compression is completed, the screws 4032 are screwed out, so that the disassembly is very convenient.

Referring to fig. 2, the hydraulic cylinders 401 are two hydraulic cylinders 401 driven by the same hydraulic pump, and the hydraulic cylinders 401 are located at the positions of the fixing lugs 403 to which the two shaft-removing pieces 4021 are connected.

The hydraulic cylinder 401 is supported by the fixing lug 403, the shaft detaching block 402 can be made smaller correspondingly, raw materials are saved, and the middle part of the shaft detaching block cannot tilt up after the shaft detaching plate 4021 is stressed.

Referring to fig. 2, the hydraulic cylinder 401 includes a first hydraulic cylinder 401 and a second hydraulic cylinder 401, the first hydraulic cylinder 401 is provided with a first hydraulic joint, the second hydraulic cylinder 401 is provided with a second hydraulic joint, and the first hydraulic joint and the second hydraulic joint are connected to the same hydraulic pump through oil pipes. The two hydraulic cylinders 401 are connected at the same oil pressure, so that the telescopic lengths of the two hydraulic cylinders 401 can be completely consistent.

Not shown in the figures, in an embodiment of the present invention, a cushion block for heightening is arranged between the hydraulic cylinder 401 and the axle-detaching plate 4021, so as to meet the telescopic requirements of different heights.

With continued reference to fig. 2, the body 101 further includes a pin 501 matching with the shaft hole 105, an outer diameter of the pin 501 is equal to a diameter of the shaft hole 105, and the pin 501 is plugged in the shaft hole 105 to limit the pressing block 104.

As shown in fig. 2-4, when the present invention works, the spring 103 is pre-compressed, the body 101 is placed at a designated position under the support plate 20, and the pin 501 can play a role of limiting, so that the body 101 is placed at a corresponding position of the support plate 20 and then the pin 501 is taken out. The two shaft detaching pieces 4021 are directly assembled into a shaft detaching block 402, the hydraulic cylinder 401 is directly placed between the shaft detaching block 402 and the support plate 20 through screw fixation, the hydraulic cylinder 401 is electrified, a piston rod of the hydraulic cylinder 401 extends out to apply pressure to the shaft detaching block 402, the shaft detaching block 402 simultaneously generates downward pressure on the pressing block 104, and the pressing block 104 compresses the spring 103. The two ends of the pressing block 104 leave the shaft holes 105, the pin shaft 501 can be easily taken out, after the piston rod is retracted, the pressure acting on the spring 103 disappears, the spring 103 generates upward elastic force on the pressing block 104 to tightly push the adjusting rod 30, the free state of the transformer body 101 caused by retraction is eliminated by the rebound force of the spring 103, and the short circuit resistance of the transformer body 101 is greatly enhanced.

According to the utility model, the hydraulic cylinder 401 is used for controlling the lifting of the pressing block 104, the pin shaft 501 can be easily pulled out, the labor is saved, the finishing time of the whole transformer is saved, the defect that scrap iron is generated when the pressing block 104 is controlled by rotating a bolt is avoided, namely, metal dust is not generated due to friction in the process of screwing the adjusting rod 30, and the running reliability of the transformer is improved.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a spring is pressed nail round pin axle dismounting device for transformer which characterized in that includes: the spring pressing nail comprises a pressing block and a spring pressing nail, wherein the pressing block is arranged on the spring pressing nail, a shaft detaching block is arranged on the pressing block of the spring pressing nail, and a plurality of hydraulic cylinders are arranged between the shaft detaching block and a clamping plate.

2. The spring pressing pin shaft dismounting device for the transformer as claimed in claim 1, wherein the shaft dismounting block comprises an upper platform for arranging the hydraulic cylinder, a lower platform for pressing the pressing block downwards and a through hole penetrating through the upper platform and the lower platform, an adjusting rod arranged between the spring pressing pin and the support plate penetrates through the through hole, and the through hole is matched with the adjusting rod; the through hole is positioned on the part of the upper platform and used for accommodating the bolt head of the adjusting rod, the aperture of the through hole positioned on the part of the lower platform is in clearance fit with the diameter of a lug on the adjusting rod, and the upper platform and the lower platform are integrally formed.

3. The spring pressing pin shaft dismounting device for the transformer as claimed in claim 2, wherein the upper surface of the upper platform is circular, and the hydraulic cylinders are uniformly distributed on the upper surface of the upper platform in pairs.

4. The spring pressing nail pin shaft dismounting device for the transformer as claimed in claim 1, wherein the shaft dismounting block is formed by splicing two shaft dismounting pieces positioned at two sides of the support plate corresponding to the pressing nail; the two ends of the shaft detaching piece are provided with fixing lugs for splicing.

5. The spring nailing pin shaft dismounting device for the transformer according to claim 4, wherein the fixing lug is a threaded hole plate, when the shaft dismounting pieces are spliced, the hole plates of the two shaft dismounting pieces are aligned, and a screw penetrates through the hole plates to fix the two shaft dismounting pieces.

6. The spring pressing pin shaft dismounting device for the transformer according to claim 4, wherein the hydraulic cylinders are two hydraulic cylinders driven by the same hydraulic pump, and the hydraulic cylinders are located at the positions of fixing lugs connected with the dismounting shaft pieces.

7. The spring pressing pin shaft dismounting device for the transformer as claimed in claim 1, wherein a cushion block for heightening is arranged between the hydraulic cylinder and the shaft dismounting block.