CN223316341U - Low-position hand pushing device for low-voltage bushing of main transformer - Google Patents

Abstract

The utility model discloses a low-position hand-pushing device for a main transformer low-voltage bushing, comprising a chassis and a lifting system arranged on the chassis, support mechanisms in contact with the ground are also installed on both sides of the chassis, a steering wheel mechanism is installed at one end of the chassis, and a directional wheel mechanism is installed at the other end; wherein, the support mechanism comprises a support arm and a linear slide fixed to the chassis, one end of the support arm is slidably installed in the linear slide, and the other end is connected to a support leg in contact with the ground. The support mechanism of the utility model can adjust the deployment angle according to the environment, making it easy to move in the narrow aisles of the substation. The steering wheel mechanism and the directional wheel mechanism ensure stability and smoothness during the overall movement process. When replacing the main transformer low-voltage bushing, the support mechanism contacts the ground to ensure overall stability.

Description

Low-position hand pushing device for low-voltage bushing of main transformer

Technical Field

The utility model belongs to the technical field of replacement of low-voltage bushings of a main transformer, and particularly relates to a low-position hand-push device for the low-voltage bushing of the main transformer.

Background

At present, the main transformer low-voltage sleeve used by the transformer substation is larger in size and larger in mass, when the main transformer low-voltage sleeve needs to be replaced and installed, the existing relevant mobile platform is difficult to enter due to narrow passage of the site environment of the transformer substation, and cannot be well matched with the site environment of the transformer substation and relevant facilities of the transformer substation, so that construction is affected, meanwhile, due to narrow passage of the site environment of the transformer substation, the whole shaking of a small-sized operation device is larger when the main transformer low-voltage sleeve is replaced, and stability and safety are poor.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and provides a low-level hand pushing device for a main transformer low-voltage sleeve, wherein a supporting mechanism is in contact with the ground to ensure the stability in the whole operation process, and meanwhile, the supporting mechanism can be adjusted in a limited space so as to move in a narrow passage of a transformer substation, and a steering wheel mechanism and a directional wheel mechanism ensure the stability and smoothness in the whole movement process so as to more flexibly and conveniently perform the main transformer low-voltage sleeve replacement operation.

The aim of the utility model is achieved by the following technical scheme:

the low-position hand pushing device for the low-voltage sleeve of the main transformer comprises a chassis and a lifting system arranged on the chassis, wherein supporting mechanisms which are in contact with the ground are further arranged on two sides of the chassis, a steering wheel mechanism is arranged at one end of the chassis, and a directional wheel mechanism is arranged at the other end of the chassis;

The supporting mechanism comprises a supporting arm and a linear sliding rail fixed on the chassis, one end of the supporting arm is slidably mounted in the linear sliding rail, and the other end of the supporting arm is connected with a supporting leg in contact with the ground.

In one embodiment, the steering wheel mechanism comprises a U-shaped support and an L-shaped support, a screw rod is rotatably installed in the U-shaped support through a shaft sleeve, an anti-slip ring is detachably installed at the bottom end of the screw rod, a coaxial shaft hole and a screw hole are formed in a penetrating mode in one end face of the L-shaped support, the inner diameter of the shaft hole is larger than that of the screw hole, steering wheels are rotatably installed on two sides of the L-shaped support, one end of the screw rod is in threaded engagement connection with the screw hole, the other end of the screw rod is rotatably extended out of the U-shaped support, the anti-slip ring rotates and slides in the shaft hole, and a traction handle is rotatably installed at the other end of the L-shaped support.

In one embodiment, the directional wheel mechanism comprises a control box and an adjusting rod, two ends of the control box are respectively and fixedly provided with a U-shaped frame II, each U-shaped frame II is respectively and slidably provided with a directional wheel set, each directional wheel set is rotationally connected with the control box, the two directional wheel sets are in transmission connection through a gear synchronous belt, the gear synchronous belt is arranged in the control box, a cover plate is detachably arranged on the control box, and the adjusting rod rotates to penetrate through the cover plate and is connected with one directional wheel set.

In one embodiment, the directional wheelset comprises a third U-shaped frame and a second screw rod, the directional wheel is rotatably installed at the opening of the third U-shaped frame, one end of the second screw rod is in threaded connection with the transverse plate of the third U-shaped frame, two ends of the second screw rod are leaked from two sides of the transverse plate of the third U-shaped frame, an anti-falling cap is installed at one end of the second screw rod, located below the transverse plate of the third U-shaped frame, a gear is installed at one end of the second screw rod, located above the transverse plate of the third U-shaped frame, the third U-shaped frame is slidably installed in the second U-shaped frame, and the gear synchronous belt is in meshed connection with the corresponding gear.

In one embodiment, a T-shaped chute is formed in one side of the linear slide rail, a rectangular chute is further formed in the upper surface of the linear slide rail, the rectangular chute and the T-shaped chute are communicated with each other, and one end of the support arm is respectively connected with the T-shaped chute and the rectangular chute in a sliding manner.

In one embodiment, the support arm comprises an arm rod and a U-shaped seat, one end of the arm rod is fixedly provided with a sleeve, an adjusting screw rod is installed on the peripheral surface of the sleeve through threads, one end of the adjusting screw rod rotates and stretches into the sleeve, the other end of the arm rod is rotationally connected with the opening of the U-shaped seat, a T-shaped sliding block is fixedly installed on the outer side of the U-shaped seat, a screw rod III is fixedly installed above the T-shaped sliding block, a nut is installed on the screw rod III through threaded engagement, the T-shaped sliding block is slidably installed in a T-shaped sliding groove, the screw rod III is slidably installed in a rectangular sliding groove, the top end of the screw rod III leaks out of the rectangular sliding groove, the nut is located above the outer side of the rectangular sliding groove, and the supporting leg is slidably installed in the corresponding sleeve.

In one embodiment, the landing leg comprises a pillar and a foot pad arranged at the bottom of the pillar, a drop-proof nut is detachably arranged at the top end of the pillar, the pillar is arranged in the sleeve, both ends of the pillar leak out from both ends of the sleeve, and the diameter of the drop-proof nut is larger than the inner diameter of the sleeve.

In one embodiment, the lifting system comprises a first shear fork support rod, a second shear fork support rod, a third shear fork support rod, a fourth shear fork support rod, a fifth shear fork support rod and a sixth shear fork support rod which are sequentially overlapped and rotationally connected, wherein one side of the bottom of the first shear fork support rod is rotationally connected with the chassis, the other side of the bottom of the first shear fork support rod is slidingly connected with the chassis, one side of the top end of the sixth shear fork support rod is connected with a lifting table, and the other side of the top end of the sixth shear fork support rod is slidingly connected with the bottom surface of the lifting table.

In one embodiment, a first double-cylinder is fixedly arranged among the first, second and third scissor struts through a rotating seat and a connecting rod, a second double-cylinder is fixedly arranged among the fourth, fifth and sixth scissor struts through a rotating seat and a connecting rod, hydraulic pump stations of the first and second double-cylinders are arranged on a chassis, and locking devices are fixedly arranged at two ends of one side above the lifting table.

In one embodiment, the locker comprises a rotary oil cylinder and a rotary arm, one end of the rotary arm is connected with the output end of the rotary oil cylinder, a bolt is arranged below the other end of the rotary arm, and the rotary oil cylinder is fixedly arranged at one end above the lifting platform.

The utility model has the beneficial effects that:

(1) The supporting mechanism can adjust the unfolding angle according to the environment, is convenient to move in a narrow passage of a transformer substation, ensures stability and smoothness in the whole moving process of the steering wheel mechanism and the directional wheel mechanism, and ensures the whole stability when the main transformer low-voltage sleeve is replaced.

(2) The steering wheel and the directional wheel can be manually lifted and adjusted, so that the chassis is completely contacted with the ground during operation, and the overall stability is further provided.

Drawings

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.

Wherein:

FIG. 1 shows a schematic view of the structure of the present utility model in one direction;

FIG. 2 shows a schematic view of the structure of the utility model in another direction;

FIG. 3 shows a schematic structural view of the chassis of the present utility model;

Fig. 4 shows a schematic structural view (exploded view) of the steering wheel mechanism of the present utility model;

FIG. 5 shows a schematic structural view of the support mechanism of the present utility model;

FIG. 6 shows a schematic structural view of a linear rail according to the present utility model;

FIG. 7 shows a schematic view of a partial enlarged structure at A in FIG. 2;

FIG. 8 shows a schematic view of a partial enlarged structure at B in FIG. 6;

FIG. 9 shows a partially enlarged schematic construction of FIG. 6 at C;

FIG. 10 shows a schematic view of a partial enlarged structure at D in FIG. 2;

In the drawings, like parts are designated with like reference numerals. The figures are not to scale.

Reference numerals:

The steering wheel mechanism comprises a chassis, a 2-steering wheel mechanism, a 3-directional wheel mechanism, a 4-linear slide rail, a 5-supporting arm, a 6-supporting leg, a 7-locker, a 8-first scissor strut, a 9-second scissor strut, a 10-third scissor strut, a 11-fourth scissor strut, a 12-fifth scissor strut, a 13-sixth scissor strut, a 14-lifting platform, a 15-first double cylinder, a 16-second double cylinder, a 17-traction handle, a 21-U-shaped bracket, a 22-shaft sleeve, a 23-screw, a 24-anti-slip ring, a 25-L bracket, a 26-shaft hole, a 27-wire hole, a 28-steering wheel, a 30-cover plate, a 31-control box, a 32-U-shaped bracket II, a 33-U-shaped bracket III, a 34-directional wheel, a 35-screw II, a 36-anti-slip cap, a 37-gear, a 38-gear synchronous belt, a 39-adjusting lever, a 41-T-shaped chute, a 42-rectangular chute, a 51-lever, a 52-sleeve, a 53-screw, a 54-U-shaped slider seat, a 55-T-shaped slider seat, a 55-U-shaped bracket, a 56-U-shaft hole, a 27-screw, a 73-rotating leg, a 71-screw, a nut, a 71-rotating bolt, a 72-rotating support, a nut, a 71-rotating support, and a nut.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

The utility model provides a low-position hand-push device for a low-voltage sleeve of a main transformer, which is shown in figures 1 and 2 and comprises a chassis 1, wherein one end of the chassis 1 is fixedly provided with a steering wheel mechanism 2, steering is convenient in the whole moving process, the other end of the chassis 1 is fixedly provided with a directional wheel mechanism 3 so as to be matched with the steering wheel mechanism 2, and stability and smoothness in the whole moving process are ensured;

In one embodiment, as shown in fig. 3 and 4, the steering wheel mechanism 2 comprises a U-shaped bracket 21 and an L-shaped bracket 25, wherein a screw rod 23 is rotatably arranged in the U-shaped bracket 21 through a shaft sleeve 22, the shaft sleeve 22 is detachably and fixedly arranged on a transverse plate in the U-shaped bracket 21 so as to ensure the stability between the screw rod 23 and the U-shaped bracket 21 through the shaft sleeve 22, an anti-drop ring 24 is detachably and fixedly arranged at the bottom end of the screw rod 23, the screw rod 23 and the L-shaped bracket 25 can be prevented from being separated through the arrangement of the anti-drop ring 24, one end surface of the L-shaped bracket 25 penetrates through a shaft hole 26 and a wire hole 27 which are coaxial, the inner diameter of the shaft hole 26 is larger than the inner diameter of the wire hole 27, steering wheels 28 are rotatably arranged at two sides of the L-shaped bracket 25, one end of the screw rod 23 is in threaded engagement with the wire hole 27, and the other end of the screw rod 23 is rotatably extended out of the U-shaped bracket 21 so as to adjust the height of the steering wheels 28 through the screw rod 23, the anti-drop ring 24 is rotatably and slidingly arranged in the shaft hole 26, the two steering wheels 28 are uniformly distributed at two sides of the shaft hole 26 and the other end of the wire hole 27, and the L-shaped bracket 25 are rotatably arranged at one end of the L-shaped bracket 25 so as to provide a traction point for a traction operator 17 to be provided with traction operator to traction points;

In one embodiment, as shown in fig. 7, the directional wheel mechanism 3 comprises a control box 31 and an adjusting rod 39, wherein two ends of the control box 31 are respectively fixedly provided with a U-shaped frame II 32, each U-shaped frame II 32 is respectively provided with a directional wheel set in a sliding way so as to form a stable triangular supporting structure between the two directional wheel sets and the steering wheel mechanism 2, each directional wheel set is rotationally connected with the control box 31, the two directional wheel sets are in transmission connection through a gear synchronous belt 38, the two directional wheel sets are in linkage through the arrangement of the gear synchronous belt 38, the gear synchronous belt 38 is arranged in the control box 31, a cover plate 30 is detachably and fixedly arranged on the control box 31 so as to overhaul the components in the control box 31, the adjusting rod 39 is rotationally arranged through the cover plate 30 and fixedly connected with one of the directional wheel sets, and can provide a required force application point for adjusting the directional wheel sets through the arrangement of the adjusting rod 39, and meanwhile, the gear synchronous belt 38 is matched to the arrangement of the two directional wheel sets so as to adjust the height of the two directional wheel sets at the same time;

The guide wheel group comprises a U-shaped frame III 33 and a screw rod II 35, wherein the guide wheel 34 is rotatably arranged at the opening of the U-shaped frame III 33 so as to ensure the stability and smoothness in the rotation process of the guide wheel 34, one end of the screw rod II 35 is in threaded engagement with the transverse plate of the U-shaped frame III 33 so as to drive the guide wheel 34 to move up and down through the U-shaped frame III 33 under the positive and negative rotation of the screw rod II 35, and both ends of the screw rod II 35 leak out from both sides of the transverse plate of the U-shaped frame III 33;

In one embodiment, as shown in fig. 3, 5 and 6, the supporting mechanism comprises a linear slide rail 4so as to provide a required adjusting space for the supporting arm 5, the linear slide rail 4 is fixedly arranged on one side of the chassis 1, two supporting arms 5 are slidably arranged on the linear slide rail 4so as to adjust the position of the supporting arm 6 and support the supporting arm 6 to ensure the stability of the supporting arm 6, and the other end of each supporting arm 5 is slidably provided with the supporting arm 6 so as to be in contact with the ground to ensure the stability in the lifting process, and the linear slide rail 4 is conveniently unfolded in a narrow passage of a transformer substation through the arrangement of structures between the linear slide rail 4 and the supporting arm 5 and the supporting arm 6;

Specifically, a T-shaped chute 41 is formed on one side of the linear slide rail 4 so as to limit the support arm 5 and ensure stability and smoothness in the moving process of the support arm 5, and a rectangular chute 42 is formed on the upper surface of the linear slide rail 4 so as to limit the support arm 5 and prevent the support arm 5 from being separated from the linear slide rail 4, wherein the rectangular chute 42 is communicated with the T-shaped chute 41, and one end of the support arm 5 is respectively connected with the T-shaped chute 41 and the rectangular chute 42 in a sliding manner;

in one embodiment, as shown in fig. 8, the supporting arm 5 comprises an arm rod 51 and a U-shaped seat 54, one end of the arm rod 51 is fixedly provided with a sleeve 52, the supporting leg 6 can be supported and limited through the arrangement of the sleeve 52, meanwhile, the supporting height of the supporting leg 6 is conveniently adjusted, an adjusting screw 53 is arranged on the periphery of the sleeve 52 through threads, so that the sleeve 52 and the supporting leg 6 are locked through the adjusting screw 53, one end of the adjusting screw 53 is rotationally extended into the sleeve 52, the other end of the arm rod 51 is rotationally connected with the opening of the U-shaped seat 54, the arm rod 51 can be rotated through the arrangement of the U-shaped seat 54 so as to adjust the supporting angle between the arm rod 51 and the chassis 1, a T-shaped sliding block 55 is fixedly arranged on the outer side of the U-shaped seat 54, the supporting arm 5 can move along the T-shaped sliding groove 41 through the arrangement of the T-shaped sliding block 55, and derailment is prevented, a screw three 56 is fixedly arranged above the T-shaped sliding block 55, the U-shaped seat 54 is positioned between the corresponding two supporting legs 6, a screw nut 57 is arranged on the screw three 56 through threaded engagement, the screw nut 57 is arranged in the sliding groove 57, the sliding nut is matched with the three sliding groove 55 and is arranged in the rectangular sliding groove 42, the sliding groove is arranged between the three sliding groove and the supporting leg 4, and the supporting leg 4 is required to be in the rectangular sliding groove and the sliding groove, and the sliding nut is in the sliding groove and the sliding groove 55 is in the sliding groove through the sliding groove and the sliding groove;

Further, as shown in fig. 9, the support leg 6 comprises a support post 61, a foot pad 62 is fixedly arranged at the bottom end of the support post 61, a drop-proof nut 63 is detachably and fixedly arranged at the top end of the support post 61, and separation between the support post 61 and the sleeve 52 can be prevented by arranging the drop-proof nut 63, the support post 61 is slidably arranged in the corresponding sleeve 52, the support post 61 is matched with the sleeve 52 through the arrangement of the support post 61, so that the support post 61 can smoothly slide along the sleeve 52, both ends of the support post 61 leak out from both ends of the sleeve 52, the drop-proof nut 63 is positioned above the outer top end of the sleeve 52, and the diameter of the drop-proof nut 63 is larger than the inner diameter of the sleeve 52;

In one embodiment, as shown in fig. 1, the lifting system comprises a first shear fork supporting rod 8, a second shear fork supporting rod 9, a third shear fork supporting rod 10, a fourth shear fork supporting rod 11, a fifth shear fork supporting rod 12, a sixth shear fork supporting rod 13 and a lifting platform 14, wherein the first shear fork supporting rod 8, the second shear fork supporting rod 9, the third shear fork supporting rod 10, the fourth shear fork supporting rod 11, the fifth shear fork supporting rod 12 and the sixth shear fork supporting rod 13 are sequentially overlapped and are in rotary connection, one side of the bottom of the first shear fork supporting rod 8 is in rotary connection with the chassis 1, the other side of the bottom of the first shear fork supporting rod 8 is in sliding connection with the chassis 1, one side of the top of the sixth shear fork supporting rod 13 is in rotary connection with the bottom of the lifting platform 14, and the other side of the top of the sixth shear fork supporting rod 13 is in sliding connection with the bottom of the lifting platform 14, so that a required placing space is provided for lifting a low-pressure sleeve through the lifting platform 14, a first double-fork supporting rod 8, a second shear fork supporting rod 9 and the third shear fork supporting rod 10 are fixedly arranged through a rotary seat and a connecting rod, a first double-fork supporting rod 15 is fixedly arranged between the first double-fork supporting rod 9 and the third shear supporting rod 10, a double-fork supporting rod 15 is fixedly arranged between the first double-fork supporting rod 11 and the double-fork supporting rod 7 and the second double-fork supporting rod is fixedly arranged between the first double-fork supporting rod and the double-cylinder and the lifting platform 7 and the lifting platform and the double-cylinder 7 is fixedly arranged at the lifting platform and the lifting device is fixedly arranged at the two ends 7;

the lifting system mainly comprises a set of 3Kw hydraulic pump station system, four phi 80 oil cylinders and 6 layers of shearing fork supporting rods, the pressure of the whole pump station system is less than 15MPa, the shearing fork supporting rods are formed by high-strength rectangular pipes, and the rigidity and the stability of the whole system are improved. The shearing fork part adopts a high-strength Q345 rectangular tube 120x60x5, adopts a rectangular tube type shearing fork, increases the overall rigidity strength, and ensures the lifting stability;

in one embodiment, the lifting table 14 is formed by welding channel steel, and a patterned steel plate is additionally arranged on the table top to play a role in skid resistance;

In one embodiment, as shown in fig. 2 and 10, the locker 7 comprises a rotary cylinder 71 and a rotary arm 72, wherein the output end of the rotary cylinder 71 is fixedly connected with one end of the rotary arm 72, and a bolt 73 is fixedly arranged below the other end of the rotary arm 72;

When the table surface of the lifting table 14 is flush with the plane for installing the main transformer low-voltage sleeve, the plug pin 73 can be driven to lift by the rotary oil cylinder 71, and the plug pin 73 is firmly connected with the plane for installing the main transformer low-voltage sleeve;

In one embodiment, after the device provided by the embodiment moves to a required position with the main transformer low-voltage sleeve, before lifting, the steering wheel 28 and the directional wheel 34 can be manually lifted by a person;

When the steering wheel 28 is lifted, the height of the steering wheel 28 can be adjusted by rotating the screw rod 23 in the forward and reverse directions;

when the directional wheel 34 is lifted, the adjusting rod 39 is rotated, and the directional wheel 34 can be lifted under the cooperation of the gear synchronous belt 38 and the corresponding gear 37;

Thereby the whole chassis is contacted with the ground by adjusting the heights of the steering wheel 28 and the directional wheel 34, and the stability during lifting is ensured;

Before lifting, when the supporting mechanism is adjusted, firstly, according to the condition of a passage of a transformer substation, the nuts 57 are unscrewed, the positions of the supporting arms 5 and the supporting legs 6 can be adjusted along the linear sliding rail 4, after the supporting arms 5 and the supporting legs 6 move to the required positions, the nuts 57 are screwed, the U-shaped seat 54 and the linear sliding rail 4 can be locked, and when the lifting is prevented, the supporting arms 5 are displaced on the linear sliding rail 4;

then the angle between the supporting arm 5 and the chassis 1 is adjusted;

Finally, according to the height of the chassis 1, the height of the supporting leg 6 is adjusted, and when the adjusting screw 53 is unscrewed, the supporting leg 6 can slide up and down along the sleeve 52 until the foot pad 62 contacts the ground, and the adjusting screw 53 is locked;

when the work is completed and traction displacement is needed, the wheels are manually moved down, and the supporting mechanism is reset.

The whole shrinkage size is 1450mm, 900mm and 1000mm in length, width and height, the maximum lifting height is 7000mm, and the height is 1000mm;

in one embodiment, the chassis 1 is made of high-strength channel steel by welding, the whole rigidity is good, all parts of the equipment have anti-corrosion and anti-rust measures, and the surfaces of all parts are strictly subjected to sand blasting and spraying for anti-rust;

In the description of the present utility model, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present utility model. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims (10)

1. The low-position hand-push device for the low-voltage sleeve of the main transformer is characterized by comprising a chassis (1) and a lifting system arranged on the chassis (1), wherein supporting mechanisms which are in contact with the ground are further arranged on two sides of the chassis (1), a steering wheel mechanism (2) is arranged at one end of the chassis (1), and a directional wheel mechanism (3) is arranged at the other end of the chassis (1);

The supporting mechanism comprises a supporting arm (5) and a linear sliding rail (4) fixed on the chassis (1), one end of the supporting arm (5) is slidably installed in the linear sliding rail (4), and the other end of the supporting arm is connected with a supporting leg (6) in contact with the ground.

2. The low-level hand pushing device for the low-voltage bushing of the main transformer according to claim 1, wherein the steering wheel mechanism (2) comprises a U-shaped bracket (21) and an L-shaped bracket (25), a screw rod (23) is rotatably arranged in the U-shaped bracket (21) through a shaft sleeve (22), an anti-slip ring (24) is detachably arranged at the bottom end of the screw rod (23), a coaxial shaft hole (26) and a wire hole (27) are formed in a penetrating manner in one end face of the L-shaped bracket (25), the inner diameter of the shaft hole (26) is larger than the inner diameter of the wire hole (27), steering wheels (28) are rotatably arranged at two sides of the L-shaped bracket (25), one end of the screw rod (23) is in meshed connection with the inner threads of the wire hole (27), the other end of the screw rod (23) rotatably extends out of the U-shaped bracket (21), the anti-slip ring (24) rotates and slides in the shaft hole (26), and a traction handle (17) is rotatably arranged at the other end of the L-shaped bracket (25).

3. The low-position hand pushing device for the low-voltage bushing of the main transformer according to claim 1, wherein the orientation wheel mechanism (3) comprises a control box (31) and an adjusting rod (39), two ends of the control box (31) are respectively fixedly provided with a U-shaped frame II (32), each U-shaped frame II (32) is respectively provided with an orientation wheel set in a sliding manner, each orientation wheel set is rotationally connected with the control box (31), two orientation wheel sets are in transmission connection through a gear synchronous belt (38), the gear synchronous belt (38) is arranged in the control box (31), a cover plate (30) is detachably arranged on the control box (31), and the adjusting rod (39) rotates through the cover plate (30) and is connected with one orientation wheel set.

4. The low-position hand pushing device for the low-voltage bushing of the main transformer according to claim 3, wherein the orientation wheel set comprises a U-shaped frame III (33) and a screw rod II (35), an orientation wheel (34) is rotatably arranged at the opening of the U-shaped frame III (33), one end of the screw rod II (35) is in threaded connection with the transverse plate of the U-shaped frame III (33), two ends of the screw rod II (35) leak out from two sides of the transverse plate of the U-shaped frame III (33), an anti-falling cap (36) is arranged at one end of the screw rod II (35) below the transverse plate of the U-shaped frame III (33), a gear (37) is arranged at one end of the screw rod II (35) above the transverse plate of the U-shaped frame III (33), the U-shaped frame III (33) is slidably arranged in the corresponding U-shaped frame II (32), and the gear synchronous belt (38) is in meshed connection with the corresponding gear (37).

5. The low-position hand pushing device for the low-voltage bushing of the main transformer according to claim 1, wherein a T-shaped chute (41) is formed in one side of the linear sliding rail (4), a rectangular chute (42) is further formed in the upper surface of the linear sliding rail (4), the rectangular chute (42) and the T-shaped chute (41) are communicated with each other, and one end of the supporting arm (5) is respectively connected with the T-shaped chute (41) and the rectangular chute (42) in a sliding mode.

6. The low-position hand pushing device for the low-voltage bushing of the main transformer according to claim 5, wherein the supporting arm (5) comprises an arm rod (51) and a U-shaped seat (54), one end of the arm rod (51) is fixedly provided with a sleeve (52), the peripheral surface of the sleeve (52) is provided with an adjusting screw rod (53) through threads, one end of the adjusting screw rod (53) rotates and stretches into the sleeve (52), the other end of the arm rod (51) is rotationally connected with an opening of the U-shaped seat (54), the outer side of the U-shaped seat (54) is fixedly provided with a T-shaped sliding block (55), a screw rod three (56) is fixedly arranged above the T-shaped sliding block (55), a nut (57) is arranged on the screw rod three (56) through threaded engagement, the T-shaped sliding block (55) is slidably arranged in a T-shaped sliding groove (41), the top end of the screw rod three (56) leaks out of the rectangular sliding groove (42), and the nut (57) is arranged above the rectangular sliding groove (42) and is correspondingly arranged in the supporting leg (52).

7. The low-level hand pushing device for low-voltage bushings of main transformer according to claim 6, characterized in that the supporting leg (6) comprises a supporting leg (61) and a foot pad (62) arranged at the bottom of the supporting leg (61), a drop-proof nut (63) is detachably mounted at the top end of the supporting leg (61), the supporting leg (61) is mounted in the sleeve (52), both ends of the supporting leg (61) leak out from both ends of the sleeve (52), and the diameter of the drop-proof nut (63) is larger than the inner diameter of the sleeve (52).

8. The low-position hand pushing device for the low-voltage bushing of the main transformer according to claim 1, wherein the lifting system comprises a first scissor supporting rod (8), a second scissor supporting rod (9), a third scissor supporting rod (10), a fourth scissor supporting rod (11), a fifth scissor supporting rod (12) and a sixth scissor supporting rod (13) which are sequentially overlapped and connected in a rotating mode, one side of the bottom of the first scissor supporting rod (8) is rotationally connected with the chassis (1), the other side of the bottom of the first scissor supporting rod (8) is in sliding connection with the chassis (1), one side of the top end of the sixth scissor supporting rod (13) is connected with a lifting table (14), and the other side of the top end of the sixth scissor supporting rod (13) is in sliding connection with the bottom surface of the lifting table (14).

9. The low-position hand pushing device for the low-voltage bushing of the main transformer according to claim 8, wherein a first double-cylinder (15) is fixedly arranged between the first shearing fork supporting rod (8), the second shearing fork supporting rod (9) and the third shearing fork supporting rod (10) through a rotating seat and a connecting rod, a second double-cylinder (16) is fixedly arranged between the fourth shearing fork supporting rod (11), the fifth shearing fork supporting rod (12) and the sixth shearing fork supporting rod (13) through the rotating seat and the connecting rod, and hydraulic pump stations of the first double-cylinder (15) and the second double-cylinder (16) are respectively arranged on the chassis (1), and locking devices (7) are respectively fixedly arranged at two ends of one side above the lifting table (14).

10. The low-level hand pushing device for the low-voltage bushing of the main transformer according to claim 9, wherein the locker (7) comprises a rotary oil cylinder (71) and a rotary arm (72), one end of the rotary arm (72) is connected with an output end of the rotary oil cylinder (71), a bolt (73) is arranged below the other end of the rotary arm (72), and the rotary oil cylinder (71) is fixedly arranged at one end above the lifting table (14).