Short-distance transferring and conveying equipment for steel coils

Abstract

The invention relates to the technical field of conveying equipment, in particular to steel coil short-distance transferring and conveying equipment which comprises a cart, an inner supporting mechanism and an outer supporting mechanism. Connecting mechanisms are arranged in the left side and the right side of the front end of the trolley. The inner supporting mechanism comprises an inner cylinder, a first lead screw, mounting grooves, a displacement assembly, a connecting rod and an inner supporting plate, the inner cylinder is fixedly connected to the front side face of the upper end of the cart, the first lead screw is rotationally connected into the inner cylinder, the displacement assembly is in threaded connection with the middle of the first lead screw, and the mounting grooves which are evenly distributed are formed in the middle of the inner cylinder; connecting rods which are evenly distributed are arranged in the mounting grooves, the displacement assemblies drive the connecting rods to rotate, and inner supporting plates are rotationally connected among the outer sides of the three connecting rods located in the same mounting groove. According to the short-distance transferring and conveying equipment for the steel coils, the pipe coils are more stable in the transferring process through the inner supporting mode and the outer supporting mode, meanwhile, the outer supporting part can be separated from the inner supporting part, and other operations of steel coil transferring are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment, and in particular to a short-distance transfer and conveying equipment for steel coils. Background Art

[0002] In workshop production, steel coils need to be transferred over short distances, which is usually done by hoisting or cart rotation. However, during transportation, some steel coils are not reinforced, which may cause safety accidents. In order to reinforce the steel coils, some carts support the steel coils through internal support rods. However, in the process of removing the steel coils, the support rods are not easy to separate from the steel coils. For this reason, we propose short-distance transfer and conveying equipment for steel coils. Summary of the invention

[0003] The present invention provides a short-distance transfer and conveying device for steel coils, which makes the pipe coil more stable during transfer through internal support and external support. At the same time, the external support can be separated from the internal support part, which is convenient for other operations such as steel coil transfer.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: short-distance transfer and conveying equipment for steel coils, including a trolley, an inner support mechanism and an outer support mechanism;

[0005] The left and right sides of the front end of the cart are both provided with connecting mechanisms;

[0006] The inner support mechanism comprises an inner cylinder, a screw rod 1, a mounting groove, a displacement assembly, a connecting rod and an inner support plate. The front side surface of the upper end of the cart is fixedly connected with the inner cylinder, the inner cylinder is rotatably connected with a screw rod 1, the middle part of the screw rod 1 is threadedly connected with the displacement assembly, the middle part of the inner cylinder is provided with evenly distributed mounting grooves, the inside of the mounting grooves are all provided with evenly distributed connecting rods, the displacement assembly drives the connecting rods to rotate, and the inner support plate is rotatably connected between the outer sides of the three connecting rods located in the same mounting groove;

[0007] The external support mechanism is connected to the trolley through the connecting mechanisms on both sides, and the pipe coil is made more stable during transportation through internal support and external support. At the same time, the external support can be separated from the internal support part to facilitate other operations of steel coil transportation.

[0008] Furthermore, it also includes a remote control shell, in which a single-chip microcomputer is arranged. The remote control shell is arranged on the left side of the cart, and the input end of the single-chip microcomputer is electrically connected to an external power supply to control various electrical appliances.

[0009] Furthermore, the internal support mechanism also includes a motor cover and a motor 1, and the rear side surface of the upper end of the cart is fixedly connected with the motor 1 and the motor cover, the motor 1 is located inside the motor cover, the output shaft of the motor 1 is fixedly connected to the rear end of the screw rod 1, and the input end of the motor 1 is electrically connected to the output end of the single-chip microcomputer to realize the opening of the internal support plate.

[0010] Furthermore, the displacement assembly includes a displacement sleeve, a rack plate, a sliding column 1 and a sliding column seat. The middle part of the screw rod 1 is threadedly connected to the displacement sleeve, and the outer side of the displacement sleeve is provided with a uniformly distributed rack plate. The internal support mechanism also includes a half gear. The inner side of the connecting rod is provided with a half gear, and the half gears are respectively meshed with adjacent rack plates. The front and rear sides of the displacement sleeve are provided with uniformly distributed sliding column seats. The front and rear sides of the inner cylinder are fixedly connected with uniformly distributed sliding columns 1. The sliding columns 1 are respectively slidably connected to the inside of the two adjacent front and rear sliding column seats to realize the rotation of the connecting rod.

[0011] Furthermore, it also includes an auxiliary support mechanism, which includes motor three, support columns, adjusting wheels, support bridges and support wheels. The relatively inner side surfaces of the front end of the cart are rotatably connected to support columns, the upper ends of the two support columns are rotatably connected to studs, the upper ends of the studs are fixedly sleeved with adjusting wheels, the upper ends of the two studs and the left and right ends of the support bridge are threadedly connected, the middle part of the upper surface of the support bridge is provided with support wheels symmetrically distributed on the left and right, the front end of the inner cylinder is placed between the two support wheels, the left side of the front end of the cart is fixedly connected to motor three, the output shaft of motor three is fixedly connected to the lower end of the support column on the left, the input end of motor three is electrically connected to the output end of the single-chip microcomputer, and supports the front end of the inner cylinder.

[0012] Furthermore, the connecting mechanism includes a connecting shaft, two sliding columns, two screw rods, two motors, a connecting plate, a protective rotating cylinder and a rear positioning seat. The interiors of the left and right sides of the front end of the cart are rotatably connected with two screw rods, the interiors of the left and right sides of the front end of the cart are fixedly connected with two sliding columns distributed front and back, and a connecting plate is slidably connected between the two sliding columns on the same left and right sides. The outer side surfaces of the two screw rods are respectively threadedly connected to the middle parts of the connecting plates on the same left and right sides, and the front and rear ends of the opposite inner sides of the two connecting plates are fixedly connected with connecting shafts, which respectively pass through the adjacent inner walls of the cart. Through hole, the left and right sides of the front end of the cart are fixedly connected with motor 2, the output shaft of motor 2 is respectively fixedly connected with the adjacent screw rod 2, the inside of the relatively inner side surface of the lower end of the cart is rotatably connected with the front and rear distributed protective rotating drums through the rotating seat, the outer side surfaces of the protective rotating drums pass through the avoidance grooves of the adjacent inner walls of the cart, the relatively inner side surfaces of the lower end of the cart are fixedly connected with evenly distributed rear positioning seats, the rear positioning seats are located on the rear side of the rear protective rotating drum, the input end of motor 2 is electrically connected to the output end of the single-chip microcomputer to achieve connection with the base, and at the same time avoid shaking of the base during movement.

[0013] Furthermore, the external support mechanism includes a base, telescopic columns and a support seat. The bottom wall of the base is fixedly connected with telescopic columns symmetrically distributed at four corners. The support seat is fixedly connected between the upper ends of the telescopic ends of the four telescopic columns. The support seat is located at the lower end of the inner tube. The lower surface of the base is fixedly connected with movable wheels symmetrically distributed at four corners to support the steel coil from the outside.

[0014] Furthermore, the external support mechanism includes an outer cover, an internally threaded sleeve, an externally threaded column, a worm wheel, a worm and a motor four. The middle part of the bottom wall of the base is rotatably connected with the externally threaded column, the middle part of the lower surface of the support seat is fixedly connected with the internally threaded sleeve, the upper end of the externally threaded column is threadedly connected to the inside of the internally threaded sleeve, the lower end of the externally threaded column is fixedly sleeved with a worm wheel, the lower surface of the support seat is fixedly connected with the outer cover, the externally threaded column passes through the circular hole on the upper surface of the outer cover, the inside of the outer cover is rotatably connected with the worm, the worm is meshingly connected with the worm wheel, the lower surface of the support seat is fixedly connected with the motor four, the output shaft of the motor four is fixedly connected to the front end of the worm, the input end of the motor four is electrically connected to the output end of the single-chip microcomputer, so as to support steel coils with different specifications of outer diameters.

[0015] Furthermore, the edge of the bottom wall of the base is provided with connecting seats symmetrically distributed at the four corners, and conical sleeves symmetrically distributed front and back are fixedly connected between the left and right inner walls of the base. The conical sleeves correspond to the connecting seats one by one on the left and right, and the connecting shafts pass through the conical sleeves and are inserted into the interior of adjacent connecting seats to realize the merging and separation of the base and the cart.

[0016] Furthermore, a handrail is provided at the rear end of the cart to facilitate pushing the cart.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The inner tube passes through the inside of the steel coil, the inner support plate opens, and the inner wall of the steel coil with different inner diameters is supported. The support seat can move up and down to support the steel coil with different outer diameters from the bottom, making the steel coil more stable during transportation.

[0019] 2. The output shaft of motor three drives the support column on the left to rotate counterclockwise, so that the two support columns are perpendicular to the ground. Then the adjusting wheel is rotated to drive the support bridge to move upward. The outer arc surface of the support wheel contacts the front end of the inner tube, providing support for the inner tube and improving the compressive strength of the inner tube.

[0020] 3. After reaching the designated position, the screw rod drives in the reverse direction, driving the connecting shaft back into the interior of the trolley, and the base is separated from the trolley, making it easier to operate and lift the steel coil.

[0021] 4. The connecting shafts pass through the tapered sleeves and are inserted into the inside of adjacent connecting seats. The rear positioning seats are in contact with the rear side surfaces of the base. The outer arc surface of the protective rotating cylinder is in contact with the left and right side walls of the base to prevent the base from shaking when it moves. When the bases are merged, the connecting shaft passes through the tapered sleeve to facilitate precise alignment of the inner hole of the connecting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the enlarged structure of location A of the present invention;

[0025] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the external support mechanism of the present invention.

[0026] In the figure: 1-trolley, 2-inner support mechanism, 21-motor cover, 22-motor 1, 23-inner cylinder, 24-screw rod 1, 25-mounting groove, 26-displacement assembly, 261-displacement sleeve, 262-rack plate, 263-sliding column 1, 264-sliding column seat, 27-connecting rod, 28-half gear, 29-inner support plate, 3-connecting mechanism, 31-connecting shaft, 32-sliding column 2, 33-screw rod 2, 34-motor 2, 35-connecting plate, 36-protective rotation Cylinder, 37-rear positioning seat, 4-auxiliary support mechanism, 41-motor three, 42-support column, 43-adjusting wheel, 44-support bridge, 45-support wheel, 5-external support mechanism, 51-base, 52-telescopic column, 53-support seat, 54-outer cover, 55-inner threaded sleeve, 56-external threaded column, 57-worm gear, 58-worm, 59-motor four, 6-connecting seat, 7-tapered sleeve, 8-movable wheel, 9-armrest, 10-remote control housing. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0028] See also Figure 1-4 This embodiment provides a short-distance transfer and conveying device for steel coils, including a trolley 1, an internal support mechanism 2 and an external support mechanism 5.

[0029] The left and right sides of the front end of the cart 1 are both provided with a connecting mechanism 3, which includes a connecting shaft 31, a sliding column 32, a screw rod 33, a motor 34, a connecting plate 35, a protective rotating cylinder 36 and a rear positioning seat 37. The left and right sides of the front end of the cart 1 are both rotatably connected to the screw rod 33, and the left and right sides of the front end of the cart 1 are both fixedly connected to the sliding column 32 distributed front and back. The two sliding columns 32 on the same side of the left and right are slidably connected with a connecting plate 35. The outer side of the screw rod 33 The two connecting plates 35 are respectively connected to the middle of the connecting plates 35 on the same side on the left and right sides by threads. The front and rear ends of the opposite inner sides of the two connecting plates 35 are fixedly connected with connecting shafts 31. The connecting shafts 31 pass through the through holes of the adjacent inner walls of the cart 1 respectively. The left and right sides of the front end of the cart 1 are fixedly connected with motors 34. The output shafts of motors 34 are respectively fixedly connected with adjacent screw rods 33. The inside of the opposite inner sides of the lower end of the cart 1 is rotatably connected with protective rotating cylinders 36 distributed front and back through a rotating seat. The outer surface of the protective rotating cylinder 36 The sides all pass through the avoidance groove of the adjacent inner wall of the cart 1, and the relatively inner side surfaces of the lower end of the cart 1 are fixedly connected with evenly distributed rear positioning seats 37, and the rear positioning seats 37 are all located on the rear side of the protective rotating drum 36 on the rear side. The input end of the motor 2 34 is electrically connected to the output end of the single-chip microcomputer. The rear end of the cart 1 is provided with a handrail 9, and the connecting shaft 31 passes through the conical sleeve 7 and is plugged into the inside of the adjacent connecting seat 6. The rear positioning seats 37 are in contact with the rear side of the base 51, and the outer arc surface of the protective rotating drum 36 is respectively connected to the base 51. The left and right side walls are in contact to prevent the base 51 from shaking when it moves. After reaching the specified position, the screw rod 24 drives in the opposite direction, and similarly drives the inner support plate 29 to close, and no longer provides support for the inner wall of the steel coil. The output shaft of the motor 2 34 drives the screw rod 2 33 to rotate, and the connecting plate 35 slides between the two adjacent sliding columns 2 32, driving the connecting shaft 31 to return to the inside of the cart 1. The base 51 is separated from the cart 1, and the steel coil can be hoisted out. When merging, the connecting shaft 31 passes through the tapered sleeve 7 to facilitate precise alignment of the connecting seat 6.

[0030] The inner support mechanism 2 includes an inner cylinder 23, a screw rod 24, a mounting groove 25, a displacement assembly 26, a connecting rod 27 and an inner support plate 29. The front side surface of the upper end of the cart 1 is fixedly connected with the inner cylinder 23, the inner cylinder 23 is rotatably connected with the screw rod 24, the middle part of the screw rod 24 is threadedly connected with the displacement assembly 26, the middle part of the inner cylinder 23 is provided with evenly distributed mounting grooves 25, the interior of the mounting grooves 25 is provided with evenly distributed connecting rods 27, the displacement assembly 26 drives the connecting rod 27 to rotate, and the outer sides of the three connecting rods 27 located in the same mounting groove 25 are rotatably connected with the inner support plate 29. The inner support mechanism 2 also includes a motor cover 21 and a motor 22. The rear side surface of the upper end of the cart 1 is fixedly connected with the motor 22 and the motor cover 21. The motor 22 is located inside the motor cover 21. The output shaft of the motor 22 is fixedly connected to the rear end of the screw rod 24. The input end of the motor 22 is electrically connected to the output end of the single-chip microcomputer. The displacement assembly 26 includes a displacement assembly 26, a displacement assembly 26, and a displacement assembly 26. The displacement sleeve 261, the rack plate 262, the slide column 263 and the slide column seat 264, the middle part of the screw rod 24 is threadedly connected with the displacement sleeve 261, the outer side of the displacement sleeve 261 is provided with a rack plate 262 evenly distributed, the inner support mechanism 2 also includes a half gear 28, the inner side of the connecting rod 27 is provided with a half gear 28, and the half gear 28 is respectively meshed with the adjacent rack plate 262, and the front and rear sides of the displacement sleeve 261 are provided with slide column seats 264 evenly distributed, and the inner sleeve There are evenly distributed sliding columns 263 fixedly connected between the front and rear sides of 23, and the sliding columns 263 are respectively slidably connected to the inside of two adjacent sliding column seats 264 in the front and rear. The output shaft of the motor 22 drives the screw rod 24 to rotate, and the screw rod 24 drives the displacement sleeve 261 to slide between the four sliding columns 263, and the rack plate 262 is displaced synchronously, driving the half gear 28 to rotate synchronously, and the connecting rod 27 rotates clockwise synchronously, driving the inner support plate 29 to open, and tightening the inner wall of the steel coil.

[0031] The outer supporting mechanism 5 is connected to the cart 1 through the connecting mechanisms 3 on both sides. The outer supporting mechanism 5 includes a base 51, a telescopic column 52 and a support seat 53. The bottom wall of the base 51 is fixedly connected with the telescopic columns 52 symmetrically distributed at four corners. The upper ends of the telescopic ends of the four telescopic columns 52 are fixedly connected with the support seat 53. The support seat 53 is located at the lower end of the inner cylinder 23. The lower surface of the base 51 is fixedly connected with the movable wheels 8 symmetrically distributed at four corners. The outer supporting mechanism 5 includes an outer cover 54, an internally threaded sleeve 55, an externally threaded column 56, a worm gear 57, a worm 58 and a motor 59. The middle part of the bottom wall of the base 51 is rotatably connected with the externally threaded column 56, the middle part of the lower surface of the support seat 53 is fixedly connected with the internally threaded sleeve 55, the upper end of the externally threaded column 56 is threadedly connected to the inside of the internally threaded sleeve 55, the lower end of the externally threaded column 56 is fixedly sleeved with a worm gear 57, and the lower surface of the support seat 53 is fixedly connected with The outer cover 54 and the external threaded column 56 pass through the circular hole on the upper surface of the outer cover 54. The inner part of the outer cover 54 is rotatably connected with a worm 58, and the worm 58 is meshed with the worm wheel 57. The lower surface of the support seat 53 is fixedly connected with a motor 4 59. The output shaft of the motor 4 59 is fixedly connected to the front end of the worm 58. The input end of the motor 4 59 is electrically connected to the output end of the single-chip microcomputer. The edge of the bottom wall of the base 51 is provided with a connecting seat 6 symmetrically distributed at four corners. The left and right inner walls of the base 51 are fixedly connected with a conical sleeve 7 symmetrically distributed front and back. The conical sleeve 7 corresponds to the connecting seat 6 on the left and right sides. The connecting shaft 31 passes through the conical sleeve 7 and is inserted into the inside of the adjacent connecting seat 6. The output shaft of the motor 4 59 drives the worm 58 to rotate, and the worm wheel 57 rotates. The external threaded column 56 rotates and withdraws inside the internal threaded sleeve 55, driving the support seat 53 to move upward, and the support seat 53 provides support for the lower end of the steel coil.

[0032] The remote control housing 10 is also included. A single-chip microcomputer (STM32F103RCT6) is arranged inside the remote control housing 10. The remote control housing 10 is arranged on the left side of the cart 1. The input end of the single-chip microcomputer is electrically connected to an external power supply.

[0033] The auxiliary support mechanism 4 includes a motor 41, a support column 42, an adjusting wheel 43, a support bridge 44 and a support wheel 45. The inner side surfaces of the front end of the cart 1 are rotatably connected to the support columns 42. The upper ends of the two support columns 42 are rotatably connected to studs. The upper ends of the studs are fixed with adjusting wheels 43. The upper ends of the two studs are threadedly connected to the left and right ends of the support bridge 44. The middle part of the upper surface of the support bridge 44 is provided with support wheels 45 symmetrically distributed on the left and right. The front end of the inner cylinder 23 is placed Between the two support wheels 45, a motor 3 41 is fixedly connected to the interior of the left side of the front end of the cart 1, and the output shaft of the motor 3 41 is fixedly connected to the lower end of the support column 42 on the left side. The input end of the motor 3 41 is electrically connected to the output end of the single-chip microcomputer. The output shaft of the motor 3 41 drives the support column 42 on the left side to rotate counterclockwise, so that the support column 42 is perpendicular to the ground, and then the adjusting wheel 43 is rotated to drive the support bridge 44 to move upward, and the outer arc surface of the support wheel 45 contacts the front end of the inner cylinder 23 to provide support for the inner cylinder 23.

[0034] The working principle of the short-distance transfer and conveying equipment for steel coils provided by the present invention is as follows: the cart 1 is pushed by the handrail 9, the inner cylinder 23 passes through the interior of the steel coil, and then the single-chip microcomputer inside the remote control housing 10 controls each motor to start, the output shaft of the motor 22 drives the screw rod 24 to rotate, the screw rod 24 drives the displacement sleeve 261 to slide between the four sliding columns 263, the rack plate 262 is displaced synchronously, driving the half gear 28 to rotate synchronously, the connecting rod 27 rotates synchronously clockwise, driving the inner support plate 29 to open, and tightening the inner wall of the steel coil, the output shaft of the motor three 41 drives the support column 42 on the left to rotate counterclockwise, so that the support column 42 is perpendicular to the ground, and then the adjusting wheel 43 is rotated to drive the support bridge 44 to move up, the outer arc surface of the support wheel 45 contacts the front end of the inner cylinder 23, and provides support for the inner cylinder 23, and then the output shaft of the motor four 59 drives the worm 58 to rotate, The worm gear 57 rotates, and the external threaded column 56 rotates and withdraws inside the internal threaded sleeve 55, driving the support seat 53 to move up. The support seat 53 provides support for the lower end of the steel coil, and the connecting shaft 31 passes through the tapered sleeve 7 and is inserted into the adjacent connecting seat 6. The rear positioning seat 37 contacts the rear side surface of the base 51, and the outer arc surface of the protective rotating cylinder 36 contacts the left and right side walls of the base 51 respectively to prevent the base 51 from shaking when moving. After reaching the specified position, the screw rod 24 drives in the opposite direction, and similarly drives the inner support plate 29 to close, and no longer provides support for the inner wall of the steel coil. The output shaft of the motor 2 34 drives the screw rod 2 33 to rotate, and the connecting plate 35 slides between the two adjacent sliding columns 2 32, driving the connecting shaft 31 to retreat to the inside of the trolley 1. The base 51 is separated from the trolley 1, and the steel coil can be hoisted out. When merging, the connecting shaft 31 passes through the tapered sleeve 7, which is convenient for accurate alignment of the connecting seat 6.

[0035] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Steel coil short distance transfer and conveying equipment, characterized by: It comprises a cart (1), an inner supporting mechanism (2) and an outer supporting mechanism (5); Connecting mechanisms (3) are provided inside the left and right sides of the front end of the cart (1); The inner support mechanism (2) comprises an inner cylinder (23), a screw rod (24), a mounting groove (25), a displacement assembly (26), a connecting rod (27) and an inner support plate (29); the front side surface of the upper end of the cart (1) is fixedly connected with the inner cylinder (23); the inner part of the inner cylinder (23) is rotatably connected with the screw rod (24); the middle part of the screw rod (24) is threadedly connected with the displacement assembly (26); the middle part of the inner cylinder (23) is provided with evenly distributed mounting grooves (25); the inside of the mounting grooves (25) is provided with evenly distributed connecting rods (27); the displacement assembly (26) drives the connecting rod (27) to rotate; the inner support plate (29) is rotatably connected between the outer sides of the three connecting rods (27) located in the same mounting groove (25); The outer support mechanism (5) is connected to the cart (1) via connection mechanisms (3) on both sides.

2. The short-distance transfer and conveying equipment for steel coils according to claim 1 is characterized in that: It also comprises a remote control housing (10), wherein a single-chip microcomputer is arranged inside the remote control housing (10), and the remote control housing (10) is arranged on the left side of the cart (1), and an input end of the single-chip microcomputer is electrically connected to an external power supply.

3. The short-distance transfer and conveying equipment for steel coils according to claim 2 is characterized in that: The inner support mechanism (2) further comprises a motor cover (21) and a motor one (22); the rear side surface of the upper end of the cart (1) is fixedly connected with the motor one (22) and the motor cover (21); the motor one (22) is located inside the motor cover (21); the output shaft of the motor one (22) is fixedly connected to the rear end of the screw rod one (24); and the input end of the motor one (22) is electrically connected to the output end of the single chip microcomputer.

4. The short-distance transfer and conveying equipment for steel coils according to claim 1 is characterized in that: The displacement assembly (26) comprises a displacement sleeve (261), a rack plate (262), a slide column (263) and a slide column seat (264); the middle part of the screw rod (24) is threadedly connected to the displacement sleeve (261); the outer side surface of the displacement sleeve (261) is provided with a rack plate (262) that is evenly distributed; the inner support mechanism (2) further comprises a half gear (28); the inner side of the connecting rod (27) is provided with a half gear (28); the half gear (28) is respectively meshed and connected with adjacent rack plates (262); the front and rear sides of the displacement sleeve (261) are provided with evenly distributed slide column seats (264); the front and rear sides of the inner cylinder (23) are fixedly connected with evenly distributed slide columns (263); the slide columns (263) are respectively slidably connected to the inside of two adjacent slide column seats (264) at the front and rear sides.

5. The short-distance transfer and conveying equipment for steel coils according to claim 2 is characterized in that: The invention also comprises an auxiliary support mechanism (4), the auxiliary support mechanism (4) comprising a motor three (41), a support column (42), an adjusting wheel (43), a support bridge (44) and a supporting wheel (45), the opposite inner side surfaces of the front end of the cart (1) are rotatably connected with the support columns (42), the upper ends of the two support columns (42) are rotatably connected with studs, the upper ends of the studs are fixedly sleeved with adjusting wheels (43), the upper ends of the two studs and the left and right ends of the support bridge (44) are threadedly connected, the middle part of the upper surface of the support bridge (44) is provided with supporting wheels (45) symmetrically distributed on the left and right, the front end of the inner cylinder (23) is placed between the two supporting wheels (45), the left side of the front end of the cart (1) is fixedly connected with the motor three (41), the output shaft of the motor three (41) is fixedly connected to the lower end of the left support column (42), and the input end of the motor three (41) is electrically connected to the output end of the single chip microcomputer.

6. The short-distance transfer and conveying equipment for steel coils according to claim 2 is characterized in that: The connecting mechanism (3) comprises a connecting shaft (31), a second sliding column (32), a second screw rod (33), a second motor (34), a connecting plate (35), a protective rotating cylinder (36) and a rear positioning seat (37). The interiors of the left and right sides of the front end of the cart (1) are both rotatably connected with the second screw rod (33). The interiors of the left and right sides of the front end of the cart (1) are both fixedly connected with the second sliding column (32) distributed front and back. The two sliding columns (32) on the same side of the left and right are both slidably connected with the connecting plate (35). The outer side surfaces of the second screw rod (33) are respectively threadedly connected with the middle parts of the connecting plates (35) on the same side of the left and right. The front and rear ends of the opposite inner side surfaces of the two connecting plates (35) are both fixedly connected with the connecting shaft (31). The connecting shaft (31) passes through the through holes of the adjacent inner wall of the cart (1), the left and right sides of the front end of the cart (1) are fixedly connected with the second motor (34), the output shaft of the second motor (34) is fixedly connected with the adjacent second screw rod (33), the inside of the relative inner side surface of the lower end of the cart (1) is rotatably connected with the front and rear distributed protective rotating cylinders (36) through the rotating seat, the outer side surface of the protective rotating cylinder (36) passes through the avoidance groove of the adjacent inner wall of the cart (1), the relative inner side surface of the lower end of the cart (1) is fixedly connected with the uniformly distributed rear positioning seats (37), the rear positioning seats (37) are all located on the rear side of the rear protective rotating cylinder (36), and the input end of the second motor (34) is electrically connected to the output end of the single chip microcomputer.

7. The short-distance transfer and conveying equipment for steel coils according to claim 6 is characterized in that: The outer support mechanism (5) comprises a base (51), telescopic columns (52) and a support seat (53); the bottom wall of the base (51) is fixedly connected to the telescopic columns (52) distributed symmetrically at four corners; the support seat (53) is fixedly connected between the upper ends of the telescopic ends of the four telescopic columns (52); the support seat (53) is located at the lower end of the inner cylinder (23); and the lower surface of the base (51) is fixedly connected to movable wheels (8) distributed symmetrically at four corners.

8. The short-distance transfer and conveying equipment for steel coils according to claim 7 is characterized in that: The external support mechanism (5) comprises an outer cover (54), an internally threaded sleeve (55), an externally threaded column (56), a worm wheel (57), a worm (58) and a motor (59); the middle part of the bottom wall of the base (51) is rotatably connected with the externally threaded column (56); the middle part of the lower surface of the support seat (53) is fixedly connected with the internally threaded sleeve (55); the upper end of the externally threaded column (56) is threadedly connected to the inside of the internally threaded sleeve (55); the lower end of the externally threaded column (56) is fixedly sleeved with a worm wheel (58); The lower surface of the support seat (53) is fixedly connected with an outer cover (54), the external threaded column (56) passes through the circular hole on the upper surface of the outer cover (54), the inner part of the outer cover (54) is rotatably connected with a worm (58), the worm (58) is meshedly connected with the worm wheel (57), the lower surface of the support seat (53) is fixedly connected with a motor four (59), the output shaft of the motor four (59) is fixedly connected with the front end of the worm (58), and the input end of the motor four (59) is electrically connected to the output end of the single chip microcomputer.

9. The short-distance transfer and conveying equipment for steel coils according to claim 7 is characterized in that: The edge of the bottom wall of the base (51) is provided with connecting seats (6) symmetrically distributed at four corners, and conical sleeves (7) symmetrically distributed front and back are fixedly connected between the inner walls on the left and right sides of the base (51), and the conical sleeves (7) correspond to the connecting seats (6) on the left and right sides one by one, and the connecting shafts (31) respectively pass through the conical sleeves (7) and are inserted into the inside of the adjacent connecting seats (6).

10. The short-distance transfer and conveying equipment for steel coils according to claim 1 is characterized in that: A handrail (9) is provided at the rear end of the cart (1).

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