CN106914876A - A kind of stand transformer dedicated and application method - Google Patents

Abstract

The invention discloses a special workbench for a stand transformer and a use method thereof, which comprises a support ladder, a shelf, connecting bolts, a folding guardrail and a safety rope. The two ends of the shelf are hingedly connected to the two supporting ladders respectively through connecting bolts, forming a high platform composed of the supporting ladder and the shelf. Folding guardrails are inserted on the shelf to prevent people from falling. The workbench is fixed by interconnecting the connecting rods on the two supporting ladders, and the connecting rods are tied to the utility poles through the safety ropes on the connecting rods to make the workbench more stable. The bottom of the supporting ladder is equipped with an adjustment device to adapt to different grounds. The device adopts an assembled structure to facilitate disassembly and installation, and thus also has the beneficial effect of being convenient for transportation and storage.

Description

A special workbench for bench transformer and its use method

technical field

The invention relates to the field of repair and maintenance tools in electric power engineering, in particular to a special workbench for bench transformers and a use method thereof.

Background technique

In recent years, the State Grid Corporation of China has intensified efforts to transform rural power grids. As a typical design scheme, bench-type transformers have been given priority for promotion and application. The transformer is installed on the cross arm made of two channel steels that are fastened close to the pole. During the later maintenance and overhaul process, the staff need to climb with bare hands or use iron shoes to climb the pole to the position of the platform to work. It is extremely inconvenient to go up and down; and because the structure of the transformer bench is relatively compact, the working range of the staff on the transformer bench is limited, and it is very easy to cause tools and personnel to fall during maintenance and overhaul. The application number is 201520854754.3, which is a pole-mounted transformer maintenance platform. Its structure is that an L-shaped platform structure is fixed on the cross arm of the transformer installation platform, so as to facilitate the maintenance personnel to work on it. However, this structure requires the installation of each bench transformer, which increases the cost, and at the same time, it does not have the function of flexible combination due to the single structure. Therefore, it is an urgent need to design a special workbench for bench transformers that is convenient for assembly.

Contents of the invention

The technical problem to be solved by the present invention is to provide a special workbench for bench transformers and its use method. The workbench is convenient for personnel to go up and down to maintain and repair the transformer. , Carrying characteristics.

The technical scheme of the technical problem to be solved in the present invention is:

A special workbench for bench transformers is characterized in that it includes two supporting ladders, a shelf, two connecting bolts and a folding guardrail. The support ladder includes two pillars and a plurality of cross bars. The cross-section of the pillar is L-shaped, and the two pillars are symmetrically arranged in a "┕┙" shape. The top of the pillar is provided with a hinged pipe, the lower part of the pillar is provided with an adjustment device, and the middle part of the pillar is provided with a connecting rod. The crossbar is vertically and fixedly connected to the two pillars, and the two ends of the crossbar are provided with retaining rings, and a section of the crossbar between the retaining ring and the pillars is provided with a bearing. Rectangular flat plate, the lower part of the cargo platform is provided with a stopper, and the upper part of the cargo platform is provided with a round hole in the middle, and the cargo platform is embedded in the chute formed by two L-shaped pillars and cross bars. The articulated pipe is a circular pipe provided with an internal thread, the axis of the articulated pipe is perpendicular to the pillar and parallel to the cross bar, the articulated pipes on the two pillars have different apertures, and the articulated pipe with a larger aperture is the first articulated pipe , the hinged tube with smaller aperture is the second hinged tube. The adjusting device includes a fixed block, a linkage rod, an adjusting screw, an adjusting block, a base and a fixing pin. The fixed block is a rectangular block, one side of the fixed block is fixedly connected with the pillar, the fixed block is provided with a sliding hole and an adjusting screw hole, the sliding holes have two, and run through the upper and lower planes of the fixing block, the adjusting screw The axis line of the hole is parallel to the axis line of the sliding hole, and the adjusting screw hole is located in the middle of the two sliding holes. There are two connecting rods, which are respectively slidably arranged inside the slide hole, and the lower end of the connecting rod is hingedly connected with the base. On the base, a round hole is arranged in the middle of the joint between the two connecting rods and the base. , the aperture of the circular hole is larger than the aperture of the adjusting screw hole, and the axis of the circular hole coincides with the axis of the adjusting screw hole. The adjustment block includes two connecting parts and a linkage part, the linkage part is a ring, the upper part of the linkage part is provided with a card slot, the card slot is an annular groove, and the connection part is strip-shaped, It is symmetrically arranged on both sides of the linkage part, and the connection parts on both sides are respectively fixedly connected with the lower part of the linkage rod. The adjusting screw has a tubular structure, and the adjusting screw is screwed to the adjusting screw hole. The thickness of the tube wall of the adjusting screw is smaller than the cross-sectional width of the slot, so that the adjusting screw can be inserted into the slot, and the bottom of the adjusting screw is The end and the card slot are connected by bearings. The upper end of the adjustment screw tube wall is provided with two receiving grooves. The two receiving grooves have the same width and are oppositely arranged on the tube wall of the adjustment screw. The bottom of the groove is provided with a push-out hole, and the shape of the push-out hole is the same as that of the receiving groove. The lower end of the fixed pin is needle-shaped, and the upper end is a cylinder. The side of the upper end of the fixed pin is provided with a through square hole. The center line of the square hole passes through the axis line of the fixed pin. Positioning screw holes, the positioning screw holes are perpendicular to the centerline of the square hole, the two positioning screw holes are symmetrical to the axis of the fixed pin, and there are two clamping blocks inside the square hole, the clamping blocks are rectangular strips, the clamping blocks There is a limit hole in the middle, a spring is arranged in the middle of the two blocks, the screw inside the positioning screw hole passes through the limit hole in the middle of the block, and the part of the block protruding from the fixing pin is clamped in the receiving groove. The connecting bolt includes a small threaded part, a hinge rod, a large threaded part and an operating part. The small thread part is located at the left end, and the small thread part is a screw rod matched with the second articulated pipe. The articulated rod is a cylinder located on the right side of the small threaded part, the aperture of the articulated rod is slightly smaller than the aperture of the connecting pipe, and the large threaded part is located on the right side of the articulated rod. The large threaded part is a screw rod matched with the first articulated pipe. The operation part is located on the right side of the large threaded part, and the operation part is a regular hexagonal cylinder. The operation part is provided with a through hole, and the through hole passes through two opposite side surfaces of the operation part. The shelf is rectangular, the four corners of the shelf are provided with rectangular gaps, the left and right ends of the shelf are provided with connecting round pipes, the two ends of the bottom plane of the shelf are respectively provided with a combined connecting pipe, and the inside of the combined connecting pipe is The connecting shaft is installed, and the lower edge and the left and right edges of the shelf are provided with guardrail jacks. The connecting round pipe is placed in the middle of the hinged pipes supporting the two pillars of the ladder, the axis line of the connecting round pipe coincides with the axis line of the hinged pipe on the pillar, and the aperture of the connecting round pipe is larger than the aperture of the second hinged pipe and Smaller than the hole diameter of the first hinged pipe, the connecting circular pipe and the two hinged pipes are hingedly connected by connecting bolts. The folding guardrail includes a long guardrail and two supporting guardrails, the left and right sides of the long guardrail are respectively hingedly connected with the supporting guardrail, and the bottom of the long guardrail and the supporting guardrail is provided with a guardrail plug matching the position of the guardrail jack, and the guardrail plug Insert it inside the guardrail jack.

More preferably, a pulley is provided in the middle of the uppermost cross bar of the support ladder, and a pulley is wound around the pulley. The two ends of the pulley are provided with hooks. Hang on a rail.

Preferably, a hook is provided on the folding guardrail.

Preferably, a safety rope is provided on the connecting rod.

The method for using the special workbench for a bench transformer includes the following steps:

Step 1. Assemble the supporting ladder and the shelf on one side of the cross-arm length direction. The specific steps are: Step 1.1 Place the two supporting ladders on both sides of the shelf, and place the connecting round pipes on both sides of the shelf on the supporting ladder In the middle of the round tubes on the two pillars, step 1.2 passes the connecting bolts through the first hinged tube, the connecting round tube, and the second hinged tube in turn, and connects the large and small threaded parts of the connecting bolts and the first and second hinged tubes. Connect the connection, step 2, adjust the support ladder so that the shelf is close to the cross arm where the transformer is installed, step 3, adjust the connecting rod according to the height of the shelf, and screw the butterfly bolt in the outermost screw hole of the connecting rod into the other connecting rod In the appropriate screw hole, step 4, take the folding guardrail to the shelf, open the folding guardrail and insert it into the inside of the guardrail socket of the shelf.

More preferably, a method for using a special workbench for bench transformers, the feature of step 1 is: respectively assembling the supporting ladder and the shelf on both sides of the length direction of the cross arm, and inserting the connecting shaft into the length of the cross arm after the assembly is completed. Orient the corresponding combination of shelves on both sides in the connecting pipe.

More preferably, a method for using a special workbench for bench transformers, the feature of step 2 is: method 2.1, adjustment of the adjustment device on the hardened ground: rotating the adjustment screw to adjust the extension length of the base to adapt to different heights; Method 2.2, the adjustment of the adjustment device on the soft ground: first, press the block to make it retract into the inside of the adjustment screw, and then press down the fixing pin inside the upper end of the adjustment screw, and the fixing pin protrudes from the bottom and then from the The lower end of the base is pulled down until the block reaches the push-out hole and pops out of the push-out hole. Finally, adjust the adjusting screw to a suitable position and insert the fixing pin into the soft ground.

The beneficial effect of the present invention is that,

1. The assembled structure design is adopted to facilitate the storage and transportation of the equipment.

2. It does not need to be fixed on the cross arm of the bench transformer, which saves the cost.

3. The cross bar supporting the ladder is equipped with bearings, which facilitates the up and down transportation of heavy equipment.

4. The supporting ladder is equipped with an adjustment device, which has the function of adapting to uneven ground.

5. The workbench has the beneficial effect that two sets are used in combination and are more reliable after the combination.

Description of drawings

Fig. 1 is the front view of an embodiment of the special workbench for bench transformer of the present invention,

Fig. 2 is a plan view of an embodiment of the special workbench for bench transformer of the present invention when it is laid flat,

Fig. 3 is a front view of an embodiment of the supporting ladder of the bench transformer special workbench of the present invention,

Fig. 4 is a bottom view of an embodiment of the supporting ladder of the bench transformer special workbench of the present invention,

Fig. 5 is a schematic diagram when two special workbenches for bench transformers of the present invention are used in combination,

Fig. 6 is a cross-sectional view of the special workbench adjustment device for bench-type transformers of the present invention,

Fig. 7 is an enlarged view of area A in Fig. 6 of the bench-type transformer special workbench of the present invention,

Fig. 8 is an enlarged view of area B in Fig. 6 of the bench-type transformer special workbench of the present invention,

Fig. 9 is a schematic diagram of the adjustment block of the bench-type transformer special workbench of the present invention,

Fig. 10 is a schematic diagram of connecting bolts for the dedicated workbench of the bench-type transformer of the present invention.

In the figure,

1. Support ladder, 13. Connecting rod,

2. Shelf, 21. Guardrail socket, 22. Combined connecting pipe, 23. Connecting shaft, 24. Connecting round pipe,

3. Connecting bolt, 31. Small thread part, 32. Articulating rod, 33. Large thread part, 34. Operation part,

4. Cross bar, 41. Stop ring, 42. Bearing, 43. Pulley, 44. Freight platform,

5. Drawstring,

6. Folding Guardrail, 61. Long Guardrail, 62. Supporting Guardrail, 63. Guardrail Plug

7. Safety rope

8. Strut, 81. First hinged tube, 82. Second hinged tube,

9. Adjusting device, 91. Fixed block, 911. Sliding hole, 912. Adjusting screw hole, 92. Linkage rod, 93. Adjusting screw, 931. Accepting groove, 932. Pushing hole, 94. Adjusting block, 941 .Connecting part, 942. Linkage part, 943. Card slot, 95. Base, 96. Fixing pin, 961. Positioning screw hole, 962. Blocking block, 963. Limiting hole.

detailed description

In order to make the technical solutions and beneficial effects of the present invention clearer, the implementation manners of the present invention will be further explained in detail below.

As shown in FIG. 1 , a dedicated workbench for bench transformers includes two supporting ladders 1 , a shelf 2 , two connecting bolts 3 and a folding guardrail 6 .

As shown in FIG. 3 , the support ladder 1 includes two pillars 8 and a plurality of cross bars 4 . There are three functions of supporting the ladder 1, one is to support the upper shelf 2; Since most of the electrical equipment in the power system industry has the characteristics of large volume and heavy weight, the equipment used for maintenance and maintenance of overhead installed transformers also has the above characteristics, so it is convenient for the equipment to be transported from the ground to the upper part of the bench-type transformer. The effect becomes one of its highlights.

In order to facilitate the transportation of equipment and tools to the high shelf 2, the support ladder 1 is specially designed. As shown in Figure 4, firstly, the pillar 8 is designed as a cylinder with an L-shaped cross section, and the two pillars 8 are symmetrically arranged in a "┕┙" shape, so the two pillars 8 and the crossbar 4 form a chute with the opening facing upwards ; Secondly, a bearing 42 is added on the cross bar 4 to facilitate the sliding of the equipment inside the chute; finally, in order to facilitate the transportation of equipment of various sizes, a cargo platform 44 is placed inside the chute formed by the pillar 8 and the cross bar 4 .

In order to facilitate the sliding of the cargo platform 44 without affecting the climbing of personnel, the bearings 42 are sleeved at both ends of the cross bar 4 . In order to prevent the bearing 42 from sliding in the horizontal direction of the cross bar 4, a retaining ring 41 is provided at both ends of the cross bar 4, and the retaining ring 41 is fixedly connected with the cross bar 4, so that the bearing 42 is defined between the pillar 8 and the retaining ring 41 On the end of cross bar 4 between. In order to make the cargo platform 44 slide in the chute formed by the pillar 8 and the cross bar 4 , the width of the cargo platform 44 should be greater than the distance between the two bearings 42 and less than the distance between the two pillars 8 . Therefore cargo platform 44 is designed as a horizontal direction spans two bearings 42, and vertical direction spans the flat plate of two cross bars 4 at least. In order to prevent equipment from slipping off from the cargo platform 44, a baffle plate is provided on the lower edge of the cargo platform 44. In order to facilitate personnel to pull the cargo platform 44, a circular through hole is provided at the middle position of the upper edge of the cargo platform 44. The round through hole is used for tying a rope or hanging a hook.

Because the place where the bench-type transformer is installed does not necessarily have a flat ground, a suitable fulcrum is often not found for the support ladder 1, so an adjustment device 9 is provided at the bottom of the pillar 8 of the support ladder 1. The adjustment device 9 includes a fixed block 91 , a linkage rod 92 , an adjustment screw 93 , an adjustment block 94 , a base 95 , and a fixed pin 96 . In order to realize load bearing and facilitate fixed installation, the fixed block 91 is a rectangular block, as shown in FIG. 3 , one side of the fixed block 91 is fixedly connected with the outer side of the pillar 8 . In addition to being connected with the pillar 8, the fixing block 91 also has the function of installing adjustment components. Therefore, two sliding holes 911 are provided on the fixing block 91 . In order to facilitate length adjustment, the sliding holes 911 are through holes passing through the upper and lower planes of the fixing block 91 . The function of the sliding hole 911 is to provide a track for sliding adjustment to the linkage rod 92. To realize the adjustment of the length, an adjusting screw 93 is also required. Therefore also need to set an adjustment screw hole 912 for the adjustment screw 93, the adjustment screw hole 912 is located in the middle of two slide holes 911, the axis line of the adjustment screw hole 912 is parallel to the axis line of the slide hole 911, the adjustment screw hole 912 The internal thread matches the external thread of the adjusting screw rod 93 . The two linkage rods 92 are located inside the two sliding holes 911 , and the adjusting screw 93 is screwed to the adjusting screw hole 912 .

The lower end of the linkage rod 92 is hingedly connected with the base 95 . In the middle of the two hinged joints between the two linkage rods 92 and the base 95 , a round hole is provided at the position corresponding to the adjusting screw 93 . The effect of the circular hole is to provide a passing space for the fixing pin 96, so that the fixing pin 96 passes through the base 95 and is inserted on the ground. An adjustment block 94 is connected between the two linkage rods 92 . The function of the adjustment block 94 is to connect the linkage rod 92 and the adjustment screw 93 to realize the expansion and contraction of the adjustment linkage rod 92 through the rotation of the adjustment screw 93 . In order to realize the connection with the two linkage rods 92 and the adjustment screw 93 , the adjustment block 94 includes a connection portion 941 and a linkage portion 942 . Two connecting parts 91 are respectively located on opposite sides of the linkage part 942, and are respectively fixedly connected with the linkage rod. The linking part 942 is ring-shaped, and a locking groove 943 is provided on the upper part of the linking part 942 . Bearings are arranged inside the slot 943 and are connected to the lower end of the adjusting screw 93 through the bearings. The outer ring of the bearing is fixedly connected to the outer surface of the locking groove 943 , and the inner ring of the bearing is fixedly connected to the outer surface of the lower end of the adjusting screw 93 .

In order to realize that the device can be fixed on the soft ground, using a needle-shaped structure inserted into the bottom surface is a realization method. Therefore, the adjusting screw 93 is designed to be tubular, and a fixed pin 96 is installed inside it. In order to place the adjusting screw 93 inside the slot 943 and connect it with the bearing, the tube wall of the adjusting screw 93 is smaller than the width of the slot 943 . In order to facilitate fixing the fixing pin 96 inside the adjusting screw 93 and facilitating the pushing out of the fixing pin 96 , two receiving grooves 931 are provided on the upper end of the adjusting screw 93 . The two receiving grooves 931 are arranged symmetrically. The two push-out holes 932 are located at the lower part of the adjusting screw 93 , and the positions correspond to the two receiving grooves 931 up and down.

Fixing needle 96 has the effect of pricking into the soft bottom surface, so its lower end is a needle point shape, and its upper end is a cylinder. In order to support the fixing pin 96 inside the adjusting screw 93 , the fixing pin 96 is provided with two blocks 962 . In order to facilitate the installation of the block 962 , a square hole is provided at the upper end of the fixed pin 96 , the square hole crosses the cylindrical surface of the fixed pin 96 , and the centerline of the square hole passes through the axis of the fixed pin 96 . A spring is connected between the two clamping blocks 962 , and both ends of the spring are fixedly connected to the two clamping blocks 962 respectively. Two clamping blocks 962 connected with springs are installed inside the square hole. In order to prevent the clamping blocks 962 from ejecting from the square hole, a limiting hole 963 is provided in the middle of the clamping block 962. The limiting hole 963 is a rectangular hole, and the length of the limiting hole 963 Orientation is parallel to the centerline of the square hole. Two positioning screw holes 961 are arranged on the upper plane of the fixing pin 96, and the two positioning screw holes 961 are located on the upper part of the square hole and are arranged symmetrically with respect to the axis. After the clamping block 962 is installed in the square hole, screws are screwed inside the positioning screw hole 961 , and the screw passes through the limiting hole 963 to limit the clamping block 962 to move within the range of the limiting hole 963 .

When leveling on a flat ground, it is not necessary to protrude the fixing pin 96, so the part of the clamping block 962 protruding from the square hole is stuck in the receiving groove 931, and then the adjusting screw 93 is adjusted to achieve leveling. When leveling the soft bottom, it is necessary to protrude the fixing pin 96. At this time, press the block 962 to make it retract into the inside of the adjusting screw 93, and then press down the fixing pin 96 so that the needle is exposed to the adjusting screw 93, and then pull it down. When the fixed pin 96 reaches the position of the push-out hole 932, the block 962 pops out automatically to realize the locking of the fixed pin 96. At this moment, the fixing pin 96 has passed through the circular hole of the linkage part 942 and the circular hole of the base 95, and can be inserted into the soft ground to realize the fixing of the supporting ladder 1.

In order to ensure the stability of the dedicated workbench for the stand transformer, a connecting rod 13 is provided at the center of the pillar 8 supporting the climbing ladder 1 . The connecting rod 13 realizes the stable connection of the workbench by being connected with the connecting rod 13 of another support pillar 8 of the ladder 1 . In order to facilitate fixing and adjustment, one end of the connecting rod 13 is hingedly connected with the pillar 8, and the other end is provided with at least two screw holes with the same spacing between each screw hole, and a butterfly bolt is arranged inside the outermost screw hole. The connection of the two connecting rods 13 is realized by screwing the butterfly bolts into the screw holes of the connecting rods 13 of the opposite side supporting ladder 1 , thereby realizing the fixing of the two supporting ladders 1 .

In order to realize the design concept of easy disassembly, the supporting ladder 1 and the shelf 2 are designed as two independent parts connected by connecting bolts 3 . As shown in FIG. 2 , hinged pipes are respectively provided on the upper ends of the two pillars 8 supporting the ladder 1 , and connecting circular pipes 24 are provided on both sides of the shelf 2 . In order to realize the cooperation of the hinged pipe, the connecting bolt 3 and the connecting round pipe 24, and facilitate the installation, the hinged pipe, the connecting bolt 3 and the connecting round pipe 24 have been improved.

In order to reduce parts, the hinged tube is a circular tube with internal threads inside, and the axis of the hinged tube is perpendicular to the pillar 8 and parallel to the cross bar 4 . The hinged tubes on the two pillars 8 have the same outer diameter and different inner diameters. The hinged tube with a larger aperture is the first hinged tube 81 , and the hinged tube with a smaller aperture is the second hinged tube 82 . The advantage of such a design is that the hinged connection of the connecting bolt 3 can be realized. And the design of connecting bolt 3 also matches this.

In order to make the connection more stable and easy to install, the connecting bolt 3 includes a small threaded part 31 , a hinge rod 32 , a large threaded part 33 and an operating part 34 . As shown in FIG. 10 , the small threaded part 31 is located at the left end of the connecting bolt 3 , and the small threaded part 31 matches with the second hinged pipe 82 and can be screwed to it. The hinge rod 32 is located on the right side of the small threaded part 31 and is a cylinder for placing inside the connecting tube 24 to realize the connection with the shelf 2 . The large threaded part 33 is located on the right side of the hinge rod 32 and used for screw connection with the first hinge tube 81 . The operation part 34 is a regular hexagonal body, and is provided with a through hole. The threaded connection between the connecting bolt and the hinged pipe can be realized by rotating a wrench or a screwdriver. .

Shelf 2 is a rectangular flat board. The four corners of the shelf 2 are provided with rectangular gaps to provide space for the hinged pipes 81 on the two pillars 8 supporting the ladder 1 . Place the connecting round pipes 24 at the left and right ends of the shelf 2 in the middle of the hinged pipes 81 on the two pillars 8 to coincide with the axes of the first and second hinged pipes 81 and 82 on the pillars 8 . The connecting bolt 3 passes through the hinged pipe 81 and the connecting round pipe 24 to realize the hinged connection between the supporting ladder 1 and the shelf 2 .

When assembling, the small threaded part 31 passes through the first articulated tube 81 , the connecting round tube 24 , and the second articulated tube 82 in sequence. Then the small threaded portion 31 is screwed to the second hinged pipe 81 , and at the same time, the first hinged pipe 81 and the large threaded portion 33 are also screwed together. Thus, the hinged connection between the shelf 2 and the supporting ladder 1 is realized.

In the process of transformer maintenance, it is necessary to set up the workbench on both sides of the transformer. If the workbench is set up separately on both sides, it will be inconvenient for people to step on it because of the different heights. There is a combination connecting pipe 22 . After the workbenches on both sides are erected, the two platforms are connected and fixed by inserting the connecting shaft 23 into the combined connecting pipe 22 to achieve a more stable supporting effect.

Bench type transformer installation height is mostly about three meters, when carrying out the inspection and maintenance of transformer, in order to prevent personnel from falling, folding guardrail 6 is installed on shelf 2. Also in order to meet the design requirements for easy disassembly, a plurality of guardrail jacks 21 are provided on the lower edge and the left and right edges of the shelf 2 for installing the folding guardrail 6 .

In order to make the folding guardrail 6 stand better on the shelf 2 and facilitate the disassembly of the folding guardrail 6 , the folding guardrail 6 is provided with a long guardrail 61 and two supporting guardrails 62 . The left and right ends of the long guardrail 61 are hingedly connected with two supporting guardrails 62 respectively. The bottom of the long guardrail 6 is provided with a guardrail plug 63 matched with the lower edge of the shelf 2, that is, the number is the same and the positions are corresponding. The bottom of the supporting guardrail 62 is provided with guardrail plugs 63 matching the left and right edges of the shelf 2 . When not in use, the supporting guardrails 62 at both ends are folded up and attached to the surface of the long guardrail 61; The supporting guardrails 62 at both ends form a "[" shaped guardrail, and this shape has the function of keeping upright. During installation, open the folding guardrail 6 and insert it in the guardrail jack 21 of the shelf 2 to get final product. Therefore, the folding guardrail 6 has not only realized the upright placement on the shelf 2 but also has the function of preventing maintenance operators from falling.

Preferably, a pulley 43 is provided in the middle of the uppermost cross bar 4 supporting the ladder 1 in order to facilitate personnel to lift the cargo platform 44 on the shelf 2 . The pulley 43 is wound with a stay cord 5 . The two ends of stay cord 5 are provided with hook, and the hook at stay cord 5 one ends hangs in the circular through hole of cargo platform 44 tops, and the other end hangs on the cross bar 4 of support climbing ladder 1 bottom. When pulling up equipment toward shelf 2, take off the hook on the cross bar 4, personnel promptly can pull up on shelf 2, also can pull up on the ground by pulley.

Preferably, a hook is provided on the inner side of the folding guardrail 6 in order to facilitate maintenance personnel to place items. In order to prevent the folding of the folding guardrail 6 from being hindered by the hook, a groove is provided on the folding guardrail 6, and a hook is installed in the groove, and the hook does not protrude from the groove.

Better, in order to better fix the dedicated workbench for the stand transformer, the connecting rod 13 is provided with a safety rope 7 . The safety rope 7 is used to tie the connecting rod 13 on the utility pole 101 .

The method used in the special workbench for a kind of bench transformer is:

Step 1, assemble the supporting ladder 1 and the shelf 2 on one side of the length direction of the cross arm 102, the specific steps are:

Step 1.1, place two supporting ladders 1 on both sides of the shelf 2, the connecting round tubes 24 on both sides of the shelf 2 are located in the middle of the round tubes on the two pillars 8 of the supporting ladder 1, so that the two hinged tubes and the connecting tubes The axis lines of the circular tube 24 are coincident together;

Step 1.2, the connecting bolt 3 is passed through the first hinged pipe 81, the connecting round pipe 24, and the second hinged pipe 82, and then the small threaded part 31 and the second hinged pipe 81 are screwed together. At the same time, the first hinged The pipe 81 and the large threaded portion 33 are also screwed together.

Even better, when it is necessary to carry out inspection and maintenance work on both sides of the transformer, it is necessary to install two bench-type transformer special workbenches on both sides of the transformer, and at this time, it is necessary to insert the connecting shaft 23 into the combination of the shelves 2 on both sides In the connecting pipe 22, the shelves 2 of the two workbenches are located on the same horizontal plane.

Step 2, adjust the support ladder 1 so that the shelf 2 and the support ladder 1 on both sides form a trapezoid. Move the position of the support ladder 1 to adjust the height of the shelf 2, so that its height is close to the cross arm 102 where the transformer is installed.

Even better, since the installation of the transformer may be on a flat hardened ground or on an uneven soft ground, different ground adjustment devices 9 are used in different ways, that is, step 2 has the following methods.

Method 2.1, adjustment of the adjustment device on hard ground: rotate the adjustment screw to adjust the extension length of the base to suit different heights; method 2.2, adjustment of the adjustment device on soft ground: first, press the block to retract the adjustment screw Inside, then, press down the fixing pin on the inside of the upper end of the adjusting screw, the fixing pin protrudes from the bottom and then pull down from the lower end of the base until the block reaches the push-out hole and pops out of the push-out hole, finally, adjust the adjust screw to the proper location and insert the fixing pin into the soft ground.

Step 3, adjust the connecting rod 13 according to the height of the shelf 2, and screw the butterfly bolt in the outermost screw hole of the connecting rod 13 into a suitable screw hole of another connecting rod 13 .

Step 4, take the foldable guardrail 6 onto the shelf 2 , open the foldable guardrail 6 and insert it into the guardrail socket 21 of the shelf 2 .

In summary, it is only a preferred embodiment of the present invention, and it is not used to limit the scope of the present invention. Through the above description, relevant workers can perform various tasks without departing from the scope of the technical idea of the present invention. changes and modifications. The technical scope of the present invention is not limited to the contents of the description, and all the so-called equivalent changes and modifications of the shape, structure, characteristics and spirit described in the scope of the claims of the present invention shall be included in the scope of the claims of the present invention.

Claims (7)

1. a kind of stand transformer dedicated, it is characterised in that：

Including two supports cat ladder (1), shelf (2), two connecting bolts (3) and a folding guard rails (6),

Support cat ladder (1) includes two pillars (8) and multiple cross bars (4),

The cross section of the pillar (8) is L-shaped, and two pillars (8) are symmetrical arranged into " ┕ ┙ " shape, and pillar is provided with the top of (8) Hinged pipe, the lower outside of pillar (8) is provided with adjusting apparatus (9), and connecting rod (13) is provided with the middle part of pillar (8),

The cross bar (4) is vertical with two pillars (8) and is fixedly connected, and the two ends of cross bar (4) are provided with baffle ring (41), baffle ring (41) Bearing (42) is arranged with one section of cross bar (4) in the middle of pillar (8), bearing (42) upper shelf is provided with load bed (44), the goods Platform (44) is rectangular flat, and load bed (44) bottom is provided with block, circular hole is provided with the middle of load bed (44) top, and load bed (44) is embedded in two In the chute of individual L-shaped pillar (8) and cross bar (4) composition,

The hinged pipe is provided with internal thread, and the axial line of hinged pipe is perpendicular to pillar (8) and, two pillars parallel with cross bar (4) (8) aperture of the hinged pipe on is different, and the larger hinged pipe in aperture is the first hinged pipe (81), and the less hinged pipe in aperture is the Two hinged pipes (82),

The adjusting apparatus (9) include fixed block (91), trace (92), adjusting screw (93), regulation block (94), base (95) and fixed pin (96),

The fixed block (91) is rectangular block, and fixed block (91) side is fixedly connected with pillar (8), and fixed block (91) is provided with slide opening (911) and regulation screw (912), the slide opening (911) has two, and insertion fixed block (91) two planes up and down, it is described The axis parallel of regulation screw (912) axial line and slide opening (911), regulation screw (912) is in two slide openings (911) Between,

The trace (92) has two, and slide opening (911) inside, the lower end of trace (92) and base are slideably positioned in respectively (95) it is articulated and connected, on the base (95), is set with the position of the centre of base (95) hinged place positioned at two traces (92) There are circular hole, the aperture of the aperture more than regulation screw (912) of circular hole, the axle center of circular hole and the axis coinciding of regulation screw (912),

Regulation block (94) includes two connecting portions (941) and linkage portion (942), and the linkage portion (942) is a circle Ring, linkage portion (942) top is provided with draw-in groove (943), and the draw-in groove (943) is the groove of annular, and the connecting portion (941) is length Strip, is symmetricly set in the both sides of linkage portion (942), and the bottom of the connecting portion (941) of both sides respectively with trace (92) is fixed Connection,

The adjusting screw (93) is tubular structure, and adjusting screw (93) is spirally connected with regulation screw (912) and is connected, adjusting screw (93) pipe thickness is used to the embedded draw-in groove (943) of adjusting screw (93) is internal, tune less than the cross-sectional width of draw-in groove (943) The bottom of section leading screw (93) is connected with draw-in groove (943) by bearing, and the upper end of adjusting screw (93) tube wall is provided with two holding grooves (931), two holding groove (931) width are identical and are relatively arranged on the tube wall of adjusting screw (93), under adjusting screw (93) The bottom of correspondence holding groove (931) is provided with the shape of introduction hole (932), introduction hole (932) and holding groove (931) on the tube wall in portion It is identical,

Fixed pin (96) lower end is tip-like, and upper end is cylinder, and the side of the upper end of fixed pin (96) is provided with insertion Square hole, the center line of square hole passes through the axial line of fixed pin (96), and the top end face of fixed pin (96) is provided with two positioning spiral shells Hole (961), perpendicular to the center line of square hole, two positioning screw holes (961) are relative to the axle for fixing pin (96) for positioning screw hole (961) The heart is symmetrical, and two fixture blocks (962) are provided with inside square hole, and the fixture block (962) is rectangular strip, and fixture block is provided with limit in the middle part of (962) Position hole (963), the centre of two fixture blocks (962) is provided with spring, and the internal screw of positioning screw hole (961) is passed through in fixture block (962) The spacing hole (963) in portion, the part that fixture block (962) leans out fixed pin (96) is fastened on holding groove (931) inside,

The connecting bolt (3) includes minor thread portion (31), hinge bar (32), major thread portion (33) and operating portion (34), institute Minor thread portion (31) is stated positioned at left end, minor thread portion (31) are the screw rod matched with the second hinged pipe (82), the hinge bar (32) right side of minor thread portion (31) is located at for cylinder, the aperture of hinge bar (32) is slightly less than the aperture of connecting circular tube (24), Positioned at the right side of hinge bar (32), major thread portion (33) are the spiral shell matched with the first hinged pipe (81) to the major thread portion (33) Bar, positioned at the right side of major thread portion (33), operating portion (34) is regular hexagon cylinder to the operating portion (34), and operating portion (34) sets There is a through hole, two relative sides of the through hole insertion operating portion (34),

The shelf (2) is rectangle, and four angles of shelf (2) are provided with the breach of rectangle, and the left and right two ends of shelf (2) are provided with connection Pipe (24), the base plane of shelf (2) is respectively arranged at the two ends with combination connecting tube (22), is installed inside combination connecting tube (22) Connecting shaft (23), the lower edge and left and right edges of shelf (2) are provided with guardrail jack (21),

The connecting circular tube (24) is placed in the middle of the hinged pipe (81) of two pillars (8) of support cat ladder (1), connecting circular tube (24) axial line of the hinged pipe (81) on axial line and pillar (8) overlaps, and the aperture of connecting circular tube (24) is more than the second hinge Take over the aperture of (82) and less than the aperture of the first hinged pipe (81), connecting circular tube (24) is with two hinged pipes (81) by being connected Bolt (3) is realized being articulated and connected,

The folding guard rail (6) includes a guardrail (61) long and two support guardrails (62), the left and right of the guardrail (61) long Both sides are articulated and connected with support guardrail (62) respectively, and the bottom of guardrail (61) long and support guardrail (62) is provided with and guardrail jack (21) the guardrail plug (63) of location matches, it is internal that guardrail plug (63) is inserted in guardrail jack (21).

2. a kind of stand transformer dedicated according to claim 1, it is characterised in that：

Pulley (43) is provided with the middle of the uppermost cross bar (4) of support cat ladder (1), pulley is arranged with drawstring on (43) (5), drawstring (5) two ends are provided with hook, and drawstring (5) one end is hung in the circular hole of load bed (44), and one end hangs over cross bar (4) On.

3. a kind of stand transformer dedicated according to claim 1, it is characterised in that：

The folding guard rail (6) is provided with hook.

4. a kind of stand transformer dedicated according to claim 1, it is characterised in that：

The connecting rod (13) is provided with safety rope (7).

5. a kind of application method of stand transformer dedicated according to claim 1, comprises the following steps：

Step 1, in side assembling support cat ladder (1) of cross-arm (102) length direction and shelf (2), concretely comprises the following steps,

Two supports cat ladder (1) are placed on step 1.1 both sides of shelf (2), and the connecting circular tube (24) of shelf (2) both sides is placed In the middle of the hinged pipe (81) on two pillars (8) in support cat ladder (1),

Connecting bolt (3) is sequentially passed through the first hinged pipe (81), connecting circular tube (24), the second hinged pipe (82) by step 1.2, and The large and small threaded portion (33,31) of connecting bolt (3) and first and second hinged pipe (81,82) are spirally connected connection,

Step 2, adjustment support cat ladder (1) makes shelf (2) be approached with the cross-arm (102) for installing transformer,

Step 3, the Height Adjustment connecting rod (13) according to shelf (2), by the wing bolt in connecting rod (13) outermost screw It is screwed into the suitable screw of another connecting rod (13),

Step 4, folding guard rail (6) is taken on shelf (2), opens folding guard rail (6) and inserts the guardrail jack of shelf (2) (21) inside.

6. a kind of application method of stand transformer dedicated according to claim 5, the feature of its step 1 exists In：

Support cat ladder (1) and shelf (2) are assembled respectively in the both sides of the length direction of cross-arm (102), will connection after being completed In the corresponding combination connecting tube (22) of the shelf (2) of axle (23) insertion cross-arm (102) length direction both sides.

7. a kind of application method of stand transformer dedicated according to claim 5, the feature of its step 2 exists In：

Method 2.1, the regulation of adjusting apparatus (9) on hardened ground：Rotate adjusting screw (93) adjustment base (95) stretches out length Spend to adapt to different height；

Method 2.2, the regulation of adjusting apparatus (9) on soft terrain：

First, pressing fixture block (962) makes its indentation adjusting screw (93) internal,

Then, fixed pin (96) is pressed down in the inside of adjusting screw (93) upper end, after fixed pin (96) leans out from bottom Again from the lower end of base (95) toward drop-down, until fixture block (962) reaches introduction hole (932) and ejects introduction hole (932),

Finally, adjustment adjusting screw (93) inserts soft ground to correct position and by fixed pin (96).