Pole-mounted transformer transporting and hoisting device

Abstract

The invention discloses a pole-mounted transformer transporting and hoisting device, and belongs to the field of transformer installation, the pole-mounted transformer transporting and hoisting device comprises a moving trolley, a shear type lifting platform and a carrying mechanism, the moving trolley comprises a frame; a portal guide rail is arranged at the upper part of the bearing platform; the carrying mechanism comprises a portal frame, a portal frame sliding block is arranged at the bottom of the portal frame, a fork arm carrier is arranged on one side of the portal frame, and at least one set of fork arms are arranged on one side of the fork arm carrier. A lifting oil cylinder is installed on the portal, the top of a piston rod of the lifting oil cylinder is rotationally connected with a chain wheel, a chain is installed on the chain wheel, one end of the chain is connected with a lifting oil cylinder base, and the other end of the chain is connected with the fork arm carrier. Transportation of the transformer is achieved through the moving trolley, the shear type lifting platform and the carrying mechanism are arranged on the moving trolley, in the hoisting process of the transformer, inclined pulling and inclined hoisting of the transformer are avoided, the hoisting stability and safety of the transformer are guaranteed, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention belongs to the field of transformer installation, and in particular relates to a pole-mounted transformer transportation and hoisting device. Background Art

[0002] During the installation and deployment of power facilities, the hoisting of pole-mounted transformers plays a vital role. Its successful completion is the prerequisite for ensuring the stable operation of the power grid and efficient power supply. In areas with superior geographical conditions and convenient transportation, large lifting equipment such as cranes have become the preferred tools for transformer hoisting operations due to their excellent lifting capacity and operational flexibility. These equipment can not only greatly improve construction efficiency, but also ensure the safety and stability of the transformer during installation through precise operation control, thereby reducing manpower requirements and operational risks.

[0003] However, in the rural power grid construction environment, the access and use of large lifting equipment are often severely restricted. The rugged terrain and narrow roads in these areas make it difficult for traditional lifting equipment such as cranes to reach the work site, which greatly limits their scope of application. In order to overcome this problem, the industry generally uses a fall chain device to carry out transformer lifting operations. This method sets a pulley system above the transformer stand, hangs the hook of the fall chain on the lifting ring of the transformer, and uses manpower to pull the chain to achieve the lifting and movement of the transformer. Although this method solves the problem of large equipment being unable to reach to a certain extent, the limitations in its actual operation process cannot be ignored.

[0004] First of all, chain hoisting requires multiple workers to work together, which not only places high demands on the physical strength of the workers, but also makes the work efficiency relatively low. After long-term physical exertion, the workers are prone to fatigue, which increases the risk of the work.

[0005] Secondly, due to the large size and heavy weight of the transformer itself, it is difficult to keep it moving smoothly during manual pulling, and it is very easy to shake or deviate. This not only increases the difficulty and complexity of the operation, but may also cause the transformer to collide with surrounding objects during the lifting process, causing damage.

[0006] What is more serious is that some small transformers are usually only equipped with two lifting rings. When using a fall chain for oblique lifting, the chain of the fall chain can easily come into contact with key parts such as the transformer bushing. This extrusion may not only cause damage to the transformer bushing and other parts, but also have a serious impact on the overall performance and safety of the transformer. Summary of the invention

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a pole-mounted transformer transportation and hoisting device to solve the problems of low transformer hoisting efficiency, high labor intensity for workers and easy damage to the transformer when hoisting the transformer in an environment where a crane cannot enter.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A transformer transport and hoisting device on a column comprises a mobile vehicle, a scissor lift platform and a handling mechanism, wherein the mobile vehicle comprises a vehicle frame, and wheels are arranged at the bottom of the vehicle frame; the scissor lift platform comprises a base, the base is mounted on the vehicle frame, a plurality of mutually pivoted scissor frames are arranged at the upper part of the base, a lifting oil cylinder is arranged in the scissor frames, a bearing platform is arranged at the upper end of the scissor frames, and a gantry guide rail is arranged at the upper part of the bearing platform; the handling mechanism comprises a gantry, a gantry slider is arranged at the bottom of the gantry, the gantry slider is slidably connected with the gantry guide rail, a fork frame is arranged on one side of the gantry, a side plate is arranged at each end of the fork frame, the upper and lower ends of the side plate are rotatably connected with guide wheels, and the guide wheel at the upper end is located at the inner side of the gantry, and the guide wheel at the lower end is located at the outer side of the gantry, and at least one group of fork arms is arranged on one side of the fork frame; a lifting oil cylinder is mounted on the gantry, and a sprocket is rotatably connected to the top of the piston rod of the lifting oil cylinder, and a chain is mounted on the sprocket, one end of the chain is connected to the lifting oil cylinder seat, and the other end is connected to the fork frame.

[0010] Furthermore, the front and rear ends of the mobile vehicle are provided with connecting arms, wherein the end of the connecting arm at the front end is connected to a first clamp, the first clamp is connected to the pole, and the end of the connecting arm at the rear end is threadedly connected to a supporting leg.

[0011] Furthermore, a telescopic sleeve is sleeved on the outside of the connecting arm in a gap, one end of the telescopic sleeve is pivotally connected to the frame, and one end of the telescopic sleeve is threadedly connected to a first fastening bolt for fastening the connecting arm after telescoping.

[0012] Furthermore, a lateral adjustment mechanism is provided on the frame, and the lateral adjustment mechanism includes a motor installed on one side of the frame, the output shaft of the motor is connected to a screw via a connector, the screw is rotatably connected to the frame, a threaded base is threadedly connected to the screw, lateral adjustment guide rails are provided on both sides of the frame, a lateral adjustment slider is slidably installed on the lateral adjustment guide rail, and the lateral adjustment slider and the threaded base are both fixedly installed on the lower part of the base.

[0013] Furthermore, two fork arms are provided, and the fork arms are movably mounted on the fork frame.

[0014] Furthermore, a docking structure is provided at the front end of the bearing platform, and the docking structure includes a docking cylinder and a U-shaped frame connected to the piston rod of the docking cylinder. The docking cylinder is fixedly installed at the lower part of the bearing platform, and two guide sleeves are provided at the lower part of the front end of the bearing platform. The U-shaped frame is movably installed in the guide sleeves. After the bearing platform rises to be flush with the transformer stand, the docking cylinder extends to push the U-shaped frame out and place it on the side wings of the channel steel or I-beam of the stand.

[0015] Furthermore, it also includes a counterweight mechanism, which includes a counterweight frame, and the counterweight frame is a U-shaped frame structure. Counterweight sliders are fixedly connected to both sides of the counterweight frame, and counterweight guide rails are provided on both sides of the bearing platform. The counterweight sliders are slidably installed on the counterweight guide rails. A number of columns are provided on one side of the counterweight frame, and a number of counterweight blocks are provided on the outside of the columns.

[0016] Furthermore, a gear is rotatably connected to the upper part of the bearing platform, a first rack is meshed on one side of the gear, one end of the first rack is fixedly connected to the bottom of the gantry, and a second rack is meshed on the other side of the gear, one end of the second rack is fixedly connected to the bottom of the counterweight frame; a power cylinder is fixedly connected to the bottom of the bearing platform, and the end of the piston rod of the power cylinder is fixedly connected to the bottom of the counterweight frame.

[0017] Furthermore, it also includes a lifting mechanism, which is arranged above the transformer stand. The lifting mechanism includes a sleeve, support arms are movably connected on both sides of the sleeve, and second fastening bolts for fastening the support arms are threadedly connected at both ends of the sleeve. A second clamp is provided at one end of the support arm, and the second clamp is detachably mounted on the pole. A lifting tool is provided at the lower part of the sleeve, and the lifting tool includes but is not limited to a fall chain and an electric hoist.

[0018] Furthermore, a hanger is provided at the lower part of the lifting tool, and both ends of the upper part of the hanger are connected with suspension parts through lifting chains. The suspension parts are suspended on the hooks of the lifting tool. Two sets of pulleys are movably connected to the lower part of the hanger, and a hanging rod is fixedly connected to the lower part of the pulley. The length of the hanging rod is greater than the height of all bushings on the transformer, and the bottom of the hanging rod is connected to the lifting ring of the transformer.

[0019] The beneficial effects of the present invention are:

[0020] 1) The present invention utilizes a mobile vehicle to transport the transformer, and a scissor lift platform and a handling mechanism are arranged on the mobile vehicle. During the transformer hoisting process, the transformer is prevented from being tilted or slanted, thereby ensuring the stability and safety of the transformer hoisting and reducing the labor intensity of the staff.

[0021] 2) A first clamp connected to the pole is provided at the end of the connecting arm at the front end of the mobile vehicle, and a support leg is threadedly connected to the end of the connecting arm at the rear end of the mobile vehicle, thereby preventing the mobile vehicle from moving during the lifting process of the transformer and ensuring the stability of the transformer lifting.

[0022] 3) A lateral adjustment mechanism is provided on the frame, and the base is installed on the lateral adjustment mechanism. When the installation position of the transformer needs to be adjusted laterally, the motor is started to drive the screw to rotate, so that the base moves laterally on the frame, thereby realizing the lateral movement of the transport mechanism, thereby adjusting the installation position of the transformer laterally.

[0023] 4) There are two fork arms, which are movably mounted on the fork frame to facilitate adjustment of the spacing between the fork arms, and are suitable for transporting transformers of different specifications.

[0024] 5) A docking structure is provided at the front end of the load-bearing platform. After the load-bearing platform rises to be flush with the stand of the transformer, the docking cylinder extends to push out the U-shaped frame and place it on the side wings of the channel steel or I-beam of the stand, thereby enhancing the stability of the transport mechanism when transporting the transformer on the load-bearing platform.

[0025] 6) By setting up a counterweight mechanism, when the transport mechanism carries the transformer to the front end of the load-bearing platform, the counterweight mechanism moves to the rear end of the load-bearing platform, further enhancing the stability of the transformer during hoisting.

[0026] 7) A gear is arranged on the upper part of the bearing platform, one side of the gear is meshed with a first rack connected to the bottom of the gantry, the other side of the gear is meshed with a second rack connected to the bottom of the counterweight frame, and a power cylinder is fixedly connected to the bottom of the bearing platform; when the power cylinder is extended, it drives the counterweight frame to move toward the rear end of the bearing platform, and under the transmission of the gear rack, it drives the conveying mechanism to move toward the front end of the bearing platform. The setting of the power cylinder not only avoids the manual pushing of the conveying mechanism and reduces the labor intensity of the staff, but also realizes the automatic balance of the conveying mechanism and the counterweight mechanism under the action of the gear rack.

[0027] 8) A lifting mechanism is set above the transformer stand. After the transformer is placed on the upper part of the stand, when the installation angle of the transformer needs to be adjusted, the transformer is lifted by the lifting mechanism, and the transformer angle can be adjusted by slightly pushing the transformer; a hanger is set under the lifting tool, and a rigid hanging rod is set under the hanger to avoid damage caused by direct contact between the lifting tool and the accessories on the transformer, thereby ensuring the safety of transformer lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a diagram showing the use status of a pole-mounted transformer transportation and hoisting device.

[0029] Figure 2The present invention is a schematic diagram of the structure of a pole-mounted transformer transportation and hoisting device.

[0030] Figure 3 It is a structural schematic diagram of the mobile vehicle in the present invention.

[0031] Figure 4 It is a schematic diagram of the upper part of the bearing platform in the present invention.

[0032] Figure 5 It is a schematic diagram of the bottom of the carrying platform in the present invention.

[0033] Figure 6 It is a schematic diagram of the transport mechanism in the present invention.

[0034] Figure 7 It is a schematic diagram of a fork frame in the present invention.

[0035] Figure 8 It is a structural schematic diagram of the counterweight frame in the present invention.

[0036] Fig. 9 It is a usage state diagram of the lifting mechanism in the present invention.

[0037] In the figure, 1, mobile vehicle; 11, frame; 12, wheel; 13, telescopic sleeve; 14, connecting arm; 15, first clamp; 16, supporting leg; 2, lateral adjustment mechanism; 21, motor; 22, screw; 23, threaded base; 24, lateral adjustment guide rail; 25, lateral adjustment slider; 3, scissor lift platform; 31, base; 32, scissor fork frame; 33, lifting cylinder; 34, bearing platform; 35, counterweight guide rail; 36, gantry guide rail; 37, gear; 38, power cylinder; 4, handling mechanism; 41, gantry; 42, fork frame; 4 21. Side plate; 422. Guide wheel; 43. Fork arm; 44. Lifting cylinder; 45. Sprocket; 46. Chain; 47. First rack; 48. Door frame slide; 5. Docking structure; 51. U-shaped frame; 52. Docking cylinder; 53. Guide sleeve; 6. Counterweight mechanism; 61. Counterweight frame; 62. Column; 63. Second rack; 64. Counterweight slide; 65. Counterweight block; 7. Lifting mechanism; 71. Support arm; 72. Second clamp; 73. Sleeve; 74. Lifting tool; 75. Suspension; 76. Hanger; 77. Hanging rod; 78. Pulley. DETAILED DESCRIPTION

[0038] The following will be combined with the attached Figure 1-Figure 9 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] A transformer transport and hoisting device on a pole, comprising a mobile vehicle 1, a scissor lift platform 3 and a handling mechanism 4, wherein the mobile vehicle 1 comprises a vehicle frame 11, and wheels 12 are arranged at the bottom of the vehicle frame 11; the scissor lift platform 3 comprises a base 31, and the base 31 is mounted on the vehicle frame 11, and a plurality of mutually pivoted scissor frames 32 are arranged on the upper part of the base 31, and a lifting cylinder 33 is arranged in the scissor frames 32, and a bearing platform 34 is arranged at the upper end of the scissor frames 32, and a gantry guide rail 36 is arranged on the upper part of the bearing platform 34; the handling mechanism 4 comprises a gantry 41, and a gantry slider 48 is arranged at the bottom of the gantry 41, and the gantry slider 48 and the gantry guide rail 36 are connected to each other. Sliding connection, a fork frame 42 is provided on one side of the gantry 41, and a side plate 421 is provided at each end of the fork frame 42. The upper and lower ends of the side plate 421 are rotatably connected with guide wheels 422, and the guide wheel 422 at the upper end is located on the inner side of the gantry 41, and the guide wheel 422 at the lower end is located on the outer side of the gantry 41. At least one group of fork arms 43 is provided on one side of the fork frame 42; a lifting cylinder 44 is installed on the gantry 41, and a sprocket 45 is rotatably connected to the top of the piston rod of the lifting cylinder 44, and a chain 46 is installed on the sprocket 45, one end of the chain 46 is connected to the lifting cylinder 44 seat, and the other end is connected to the fork frame 42.

[0041] Furthermore, the front and rear ends of the mobile vehicle 1 are provided with connecting arms 14, wherein the end of the connecting arm 14 at the front end is connected to a first clamp 15, and the first clamp 15 is connected to the pole, and the end of the connecting arm 14 at the rear end is threadedly connected to a supporting leg 16. The first clamp 15 and the supporting leg 16 prevent the mobile vehicle 1 from moving during the lifting process of the transformer, thereby ensuring the stability of the transformer lifting.

[0042] Furthermore, a telescopic sleeve 13 is provided at the outer gap of the connecting arm 14, one end of the telescopic sleeve 13 is pivotally connected to the frame 11, and one end of the telescopic sleeve 13 is threadedly connected to a first fastening bolt for fastening the connecting arm 14 after telescoping; the setting of the telescopic sleeve 13 realizes the adjustment of the position of the first clamp 15 and the supporting leg 16, which is convenient for fixing the mobile vehicle 1 to the poles with different spacings.

[0043] Furthermore, a lateral adjustment mechanism 2 is provided on the frame 11, and the lateral adjustment mechanism 2 includes a motor 21 installed on one side of the frame 11, and the output shaft of the motor 21 is connected to a screw rod 22 through a connector, and the screw rod 22 is rotatably connected to the frame 11, and a threaded base 23 is threadedly connected to the screw rod 22, and lateral adjustment guide rails 24 are provided on both sides of the frame 11, and a lateral adjustment slider 25 is slidably installed on the lateral adjustment guide rail 24, and the lateral adjustment slider 25 and the threaded base 23 are fixedly installed at the lower part of the base 31; when it is necessary to adjust the installation position of the transformer laterally, the motor 21 is started to drive the screw rod 22 to rotate, so that the base 31 moves laterally on the frame 11, and the lateral movement of the conveying mechanism 4 can be realized, thereby adjusting the installation position of the transformer laterally.

[0044] Furthermore, two fork arms 43 are provided, and the fork arms 43 are movably mounted on the fork frame 42, so that the spacing between the fork arms 43 can be adjusted easily, and the fork arms 43 are suitable for transporting transformers of different specifications.

[0045] Furthermore, a docking structure 5 is provided at the front end of the carrying platform 34, and the docking structure 5 includes a docking cylinder 52 and a U-shaped frame 51 connected to the piston rod of the docking cylinder 52. The docking cylinder 52 is fixedly installed at the lower part of the carrying platform 34, and two guide sleeves 53 are provided at the lower part of the front end of the carrying platform 34. The U-shaped frame 51 is movably installed in the guide sleeves 53. After the carrying platform 34 rises to be flush with the transformer stand, the docking cylinder 52 extends out, pushes out the U-shaped frame 51 and places it on the side wings of the channel steel or I-beam of the stand, thereby enhancing the stability of the transport mechanism 4 when transporting the transformer on the carrying platform 34.

[0046] Furthermore, it also includes a counterweight mechanism 6, which includes a counterweight frame 61. The counterweight frame 61 is a U-shaped frame structure. Counterweight sliders 64 are fixedly connected to both sides of the counterweight frame 61. Counterweight guide rails 35 are provided on both sides of the bearing platform 34. The counterweight sliders 64 are slidably installed on the counterweight guide rails 35. A plurality of columns 62 are provided on one side of the counterweight frame 61, and a plurality of counterweight blocks 65 are provided outside the columns 62. As the conveying mechanism 4 carries the transformer to the front end of the bearing platform 34, the counterweight mechanism 6 is moved to the rear end of the bearing platform 34, which further enhances the stability of the transformer during hoisting.

[0047] Furthermore, a gear 37 is rotatably connected to the upper part of the bearing platform 34, and a first rack 47 is meshed on one side of the gear 37, one end of the first rack 47 is fixedly connected to the bottom of the gantry 41, and a second rack 63 is meshed on the other side of the gear 37, and one end of the second rack 63 is fixedly connected to the bottom of the counterweight frame 61; a power cylinder 38 is fixedly connected to the bottom of the bearing platform 34, and the end of the piston rod of the power cylinder 38 is fixedly connected to the bottom of the counterweight frame 61; when the power cylinder 38 is extended, it drives the counterweight frame 61 to move toward the rear end of the bearing platform 34, and under the transmission of the gear 37 rack, it drives the conveying mechanism 4 to move toward the front end of the bearing platform 34. The setting of the power cylinder 38 not only avoids manual pushing of the conveying mechanism 4 and reduces the labor intensity of the staff, but also realizes automatic balancing of the conveying mechanism 4 and the counterweight mechanism 6 under the action of the gear 37 rack.

[0048] Furthermore, it also includes a lifting mechanism 7, which is arranged above the transformer stand. The lifting mechanism 7 includes a sleeve 73, and support arms 71 are movably connected on both sides of the sleeve 73. Second fastening bolts for fastening the support arms 71 are threadedly connected at both ends of the sleeve 73. A second clamp 72 is provided at one end of the support arm 71, and the second clamp 72 is detachably mounted on the pole. A lifting tool 74 is provided at the lower part of the sleeve 73, and the lifting tool 74 includes but is not limited to a fall chain and an electric hoist. After the transformer is placed on the upper part of the stand, when the installation angle of the transformer needs to be adjusted, the lifting mechanism 7 is used to lift the transformer, and the transformer angle can be adjusted by slightly pushing the transformer.

[0049] Furthermore, a hanger 76 is provided at the lower part of the lifting tool 74, and the two ends of the upper part of the hanger 76 are connected with hanging parts 75 through lifting chains. The hanging parts 75 are suspended on the hook of the lifting tool 74, and two groups of pulleys 78 are movably connected to the lower part of the hanger 76. The lower part of the pulley 78 is fixedly connected with a hanging rod 77, and the length of the hanging rod 77 is greater than the height of all the bushings on the transformer. The bottom of the hanging rod 77 is connected to the lifting ring of the transformer; the rigid hanging rod 77 avoids damage caused by direct contact between the lifting tool 74 and the accessories on the transformer, thereby ensuring the safety of transformer lifting.

[0050] When hoisting the transformer, place the transformer on the fork arm 43 of the transport mechanism 4 on the upper part of the mobile vehicle 1, move the mobile vehicle 1 to the lower part of the pole, connect the first clamp 15 to the bottom of the pole, extend the support leg 16 and support it on the ground to ensure the stability of the mobile vehicle 1.

[0051] The lifting cylinder 33 is extended to raise the scissor lift platform 3 until the carrying platform 34 is flush with the transformer stand, and then the docking cylinder 52 is extended to place the U-shaped frame 51 on the side wing of the stand. During this process, gaskets can be placed according to the gap between the bottom of the U-shaped frame 51 and the side wing of the stand to ensure that the docking structure 5 is stably connected to the transformer stand.

[0052] After the carrying platform 34 is docked with the transformer stand, the power cylinder 38 extends to control the counterweight mechanism 6 to move toward the rear end of the carrying platform 34, and drives the conveying mechanism 4 to move toward the front end of the carrying platform 34 under the action of the gear rack 37, until the transformer is moved to the installation position of the stand, the lifting cylinder 44 contracts, driving the fork arm 43 to lower the transformer to the transformer stand, and then the power cylinder 38 contracts, and the counterweight mechanism 6 and the conveying mechanism 4 are reset.

[0053] When the installation angle of the transformer needs to be adjusted, the lifting mechanism 7 is installed on the upper part of the stand, and the lifting tool 74 is used to lift the suspension rod 77 at the lower part of the suspension frame 76 to lift the transformer to be separated from the transformer stand, and then the transformer can be slightly pushed to adjust the transformer angle. During the entire transformer lifting process, the transformer is prevented from being tilted or pulled obliquely, the stability and safety of the transformer lifting are guaranteed, and the labor intensity of the staff is reduced.

[0054] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A transformer transport and hoisting device mounted on a pole, comprising a mobile vehicle (1), a scissor lift platform (3) and a handling mechanism (4), wherein the mobile vehicle (1) comprises a vehicle frame (11), and wheels (12) are provided at the bottom of the vehicle frame (11); the scissor lift platform (3) comprises a base (31), and the base (31) is mounted on the vehicle frame (11); a plurality of scissor frames (32) pivotally connected to each other are provided on the upper part of the base (31), and a lifting cylinder (33) is provided in the scissor frames (32); a bearing platform (34) is provided at the upper end of the scissor frames (32), and the characteristics are as follows: A gantry (41) guide rail (36) is provided on the upper part of the carrying platform (34); the transport mechanism (4) comprises a gantry (41), a gantry (41) slider is provided at the bottom of the gantry (41), the gantry (41) slider is slidably connected to the gantry (41) guide rail (36), a fork frame (42) is provided on one side of the gantry (41), and a side plate (421) is provided at each end of the fork frame (42), and the upper and lower ends of the side plate (421) are rotatably connected to guide wheels (422), and the guide wheels at the upper end are provided to the guide wheels (422). The guide wheel (422) is located on the inner side of the mast (41), and the guide wheel (422) at the lower end is located on the outer side of the mast (41). At least one set of fork arms (43) is provided on one side of the fork frame (42). A lifting cylinder (44) is installed on the mast (41), and a sprocket (45) is rotatably connected to the top of the piston rod of the lifting cylinder (44). A chain (46) is installed on the sprocket (45), and one end of the chain (46) is connected to the lifting cylinder (44) seat, and the other end is connected to the fork frame (42).

2. The pole-mounted transformer transportation and hoisting device according to claim 1 is characterized in that: The front and rear ends of the mobile vehicle (1) are both provided with connecting arms (14), wherein the end of the front connecting arm (14) is connected to a first clamp (15), the first clamp (15) is connected to the electric pole, and the end of the rear connecting arm (14) is threadedly connected to a supporting leg (16).

3. A pole-mounted transformer transportation and hoisting device according to claim 2, characterized in that: A telescopic sleeve (13) is sleeved on the outside of the connecting arm (14) in a gap, one end of the telescopic sleeve (13) is pivotally connected to the vehicle frame (11), and one end of the telescopic sleeve (13) is threadedly connected to a first fastening bolt for fastening the connecting arm (14) after telescoping.

4. The pole-mounted transformer transportation and hoisting device according to claim 1, characterized in that: The frame (11) is provided with a transverse adjustment mechanism (2), the transverse adjustment mechanism (2) comprising a motor (21) mounted on one side of the frame (11), the output shaft of the motor (21) being connected to a screw rod (22) via a connector, the screw rod (22) being rotatably connected to the frame (11), a threaded base (23) being threadedly connected to the screw rod (22), transverse adjustment guide rails (24) being provided on both sides of the frame (11), a transverse adjustment slider (25) being slidably mounted on the transverse adjustment guide rail (24), the transverse adjustment slider (25) and the threaded base (23) being fixedly mounted on the lower part of the base (31).

5. The pole-mounted transformer transportation and hoisting device according to claim 1 is characterized in that: Two fork arms (43) are provided, and the fork arms (43) are movably mounted on the fork frame (42).

6. The pole-mounted transformer transportation and hoisting device according to claim 1, characterized in that: The front end of the bearing platform (34) is provided with a docking structure (5), and the docking structure (5) comprises a docking cylinder (52) and a U-shaped frame (51) connected to the piston rod of the docking cylinder (52). The docking cylinder (52) is fixedly installed at the lower part of the bearing platform (34). The lower part of the front end of the bearing platform (34) is provided with two guide sleeves (53). The U-shaped frame (51) is movably installed in the guide sleeves (53). After the bearing platform (34) rises to be flush with the stand of the transformer, the docking cylinder (52) extends to push out the U-shaped frame (51) and place it on the side wing of the channel steel or I-beam of the stand.

7. The pole-mounted transformer transportation and hoisting device according to claim 1, characterized in that: The invention also comprises a counterweight mechanism (6), wherein the counterweight mechanism (6) comprises a counterweight frame (61), the counterweight frame (61) is a U-shaped frame structure, counterweight sliders (64) are fixedly connected to both sides of the counterweight frame (61), counterweight guide rails (35) are arranged on both sides of the bearing platform (34), the counterweight sliders (64) are slidably mounted on the counterweight guide rails (35), a plurality of columns (62) are arranged on one side of the counterweight frame (61), and a plurality of counterweight blocks (65) are arranged outside the columns (62).

8. The pole-mounted transformer transportation and hoisting device according to claim 7, characterized in that: The upper part of the bearing platform (34) is rotatably connected to a gear (37), one side of the gear (37) is meshed with a first rack (47), one end of the first rack (47) is fixedly connected to the bottom of the door frame (41), and the other side of the gear (37) is meshed with a second rack (63), one end of the second rack (63) is fixedly connected to the bottom of the counterweight frame (61); the bottom of the bearing platform (34) is fixedly connected to a power cylinder (38), and the end of the piston rod of the power cylinder (38) is fixedly connected to the bottom of the counterweight frame (61).

9. A pole-mounted transformer transportation and hoisting device according to any one of claims 1 to 8, characterized in that: The utility model also comprises a lifting mechanism (7), wherein the lifting mechanism (7) is arranged above the transformer stand, and the lifting mechanism (7) comprises a sleeve (73), and support arms (71) are movably connected to both sides of the sleeve (73), and second fastening bolts for fastening the support arms (71) are threadedly connected to both ends of the sleeve (73), and a second clamping hoist (72) is provided at one end of the support arm (71), and the second clamping hoist (72) is detachably mounted on the electric pole, and a lifting tool (74) is provided at the lower part of the sleeve (73), and the lifting tool (74) includes but is not limited to a fall chain and an electric hoist.

10. The pole-mounted transformer transportation and hoisting device according to claim 9, characterized in that: The lower part of the lifting tool (74) is provided with a hanger (76), and the upper two ends of the hanger (76) are connected with hanging parts (75) through lifting chains. The hanging parts (75) are suspended on the hook of the lifting tool (74). The lower part of the hanger (76) is movably connected with two groups of pulleys (78), and the lower part of the pulley (78) is fixedly connected with a suspension rod (77), and the length of the suspension rod (77) is greater than the height of all bushings on the transformer. The bottom of the suspension rod (77) is connected to the lifting ring of the transformer.

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