A transformer coil automatic shaping press

Abstract

The application discloses a transformer coil automatic shaping press in the technical field of coil shaping structures, which comprises a base, a supporting leg, a horizontal conveying device, a multi-degree-of-freedom manipulator, a portal frame, a screw pair, a first transmission shaft, a forward-reverse speed regulation motor, a deflection telescopic mechanism, a U-shaped pressing plate, a forward-reverse speed regulation motor and a power output device. The coil needing shaping is automatically placed above the base through the cooperation of the horizontal conveying device and the multi-degree-of-freedom manipulator. The moving block of the screw pair is lowered by the power transmission device of the forward-reverse speed regulation motor, and the electric push rod of the deflection telescopic mechanism rotates inward. Finally, the electric push rods on the two sides drive the U-shaped pressing plates on the two sides to approach each other, extruding the wire harness. The moving block is lowered to perform shaping. After the shaping is completed, the device is output from the rear side. The device has high automation degree and creativity.

Description

Technical Field

[0001] The invention relates to the technical field of coil shaping structures, in particular to an automatic shaping press for transformer coils. Background Art

[0002] The existing transformer coil is obtained by winding copper wire, and basically does not adopt a circular shape but a non-circular structure. Therefore, during the winding process, the copper wire often becomes loose. In order to ensure that the coil can be normally placed in the transformer tank for normal use, in addition to keeping the copper wire tensioned while winding it, it can also be corrected through a subsequent shaping and pressing process. The existing shaping and pressing device, such as a transformer coil shaping device disclosed in application number CN207977225U, includes a moving platform and a fixed platform, and a support leg is provided under the fixed platform; a reset spring is provided between the moving platform and the fixed platform, and two adjusting screws are provided on the fixed platform. There are two adjustment holes on the platform, and the adjusting screws pass through the corresponding adjustment holes respectively. A gasket is provided above the adjusting hole, and an adjusting nut is provided above the gasket. An adjusting handle is provided on the adjusting nut. When in use, it is only necessary to place the coil to be shaped on the fixed platform, adjust the position of the movable platform, and increase the pressure by adjusting the handle to complete the shaping work of the coil to be shaped. No expensive pressurizing equipment is used. The transformer coil shaping device of this scheme has a simple structure, easy operation, low production cost, and is convenient and fast; however, the degree of automation is low, which is not convenient for large-scale use in factories. Based on this, the present invention designs a transformer coil automatic shaping press to solve the above problems. Summary of the Invention

[0003] The object of the present invention is to provide a transformer coil automatic shaping press to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a transformer coil automatic shaping press, comprising a base, wherein the four corners of the bottom of the base are fixed with supporting feet, and a horizontal conveying device is installed flush with the front and rear of the base, and a multi-degree-of-freedom manipulator is installed on the front side of the horizontal conveying device, a gantry is fixed on the top of the base, and a screw pair is vertically penetrated and rotatably installed on both sides of the inner cavity of the gantry, and a first transmission shaft is installed on the top of the gantry for horizontal rotation through a support seat, the first transmission shaft is connected to the top of the screw pair on both sides through a bevel gear pair, the top rear side of the gantry is installed with a forward and reverse speed regulating motor, a deflection and telescopic mechanism is installed on the surface of the moving block of the screw pair, and the outer ends of the deflection and telescopic mechanisms on both sides are detachably installed with horizontal U-shaped pressure plates, and the top front side of the gantry is installed with a power output device connected with the forward and reverse speed regulating motor, the first transmission shaft and the deflection and telescopic mechanism.

[0005] Preferably, the horizontal conveying device comprises two chain plate conveying mechanisms located in front of and flush with the base, wherein the outer end of the outer shaft of one of the chain plate conveying mechanisms is provided with a low-speed motor through a fixed bracket between the outer end and the side wall, and the adjacent shafts of the front and rear chain plate conveying mechanisms are provided with a second transmission shaft penetrating the base through a support seat horizontally rotatably installed.

[0006] Preferably, the deflection telescopic mechanism comprises a telescopic square tube sleeve vertically rotatably penetrating the gantry and located at the front side of the screw pair, and a third transmission shaft vertically rotatably installed in the inner side of the moving block surface of the screw pair, the bottom of the telescopic square tube sleeve is fixed with a threaded rod threaded sleeve assembly vertically rotatably connected with the moving block surface, the outer wall of the threaded sleeve assembly is vertically fixed with a transmission rack, the outer wall of the third transmission shaft is fixedly sleeved with a mounting gear engaged with the transmission rack, and the surface of the mounting gear is horizontally fixed with an electric push rod.

[0007] Preferably, the inner cavity of the gantry is provided with an elastic reel on both sides above, and the elastic reel is wound with a control circuit connected with the commercial power and the electric push rod through wires and reverse switch.

[0008] Preferably, the inner side of the U-shaped pressing plate is in the shape of an isosceles triangle, the two side end faces of the U-shaped pressing plate are respectively provided with a limiting blind hole and a matching limiting block, the port of the limiting blind hole is designed as an open port, the outer side of the U-shaped pressing plate is fixedly provided with a sleeve, the outer wall of the sleeve is penetrated and screwed with a butterfly bolt, and the sleeve is sleeved on the outer end of the deflection telescopic mechanism.

[0009] Preferably, the inner wall of the gantry is provided with a photoelectric sensor at the front side, the photoelectric sensor is signal connected with a controller, and the controller is signal connected with a multi-degree-of-freedom manipulator, a manual trigger module and an intermittent trigger.

[0010] Preferably, the power output device includes a fourth transmission shaft horizontally rotatably installed on the top of the gantry through a support seat and located in front of the first transmission shaft, the outer walls of the fourth transmission shaft are connected to the top of the deflection and telescopic mechanisms on both sides through worm gear assemblies, the top of the gantry is fixed with a channel steel section located on the first transmission shaft and the fourth transmission shaft, and a first spline shaft spline sleeve assembly is horizontally penetrated and rotatably installed above both sides of the channel steel section, the spline sleeve and the spline shaft of the first spline shaft spline sleeve assembly are respectively slidably plugged and rotatably connected to the channel steel section, the left end of the spline shaft of the first spline shaft spline sleeve assembly is connected to the outer wall of the fourth transmission shaft by a conical friction wheel pair, the outer wall of the spline sleeve of the first spline shaft spline sleeve assembly is installed with a first movable plate through a bearing, and the first movable plate The outer side of the first transmission shaft is horizontally connected to the inner wall of the channel steel section through a first electric latch, the outer wall of the first transmission shaft is fixedly sleeved with a first conical friction wheel, the outer end of the spline sleeve of the first spline shaft spline sleeve assembly is fixed with a second conical friction wheel, the motor shaft of the forward and reverse speed regulating motor is coaxially mounted with a second spline shaft spline sleeve assembly, the outer wall of the spline sleeve of the second spline shaft spline sleeve assembly is mounted with a second movable plate through a bearing, the upper surface of the gantry is horizontally fixed with a second electric latch, the outer end of the pin of the second electric latch is fixed to the side wall of the second movable plate, the outer end of the spline sleeve of the second spline shaft spline sleeve assembly is coaxially fixed with two third conical friction wheels with large end faces fixed to each other, and the third conical friction wheels on the left and right sides can respectively fit with the first conical friction wheel and the second conical friction wheel.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the present invention automatically places the coil that needs to be shaped on top of the base through the cooperation of the horizontal conveying device and the multi-degree-of-freedom manipulator, and the forward and reverse speed regulating motor moves the moving block of the screw pair downward through the power transmission device, and the electric push rod of the deflection and telescopic mechanism rotates inward, and finally the electric push rods on both sides drive the U-shaped pressure plates on both sides to approach each other, squeeze the wire harness, move the moving block downward, and perform shaping. After the shaping is completed, it is output from the rear side. The device has a high degree of automation and is creative. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the medium horizontal conveying device;

[0015] Figure 3 For Figure 1 The deflection telescopic mechanism schematic diagram of the embodiment of the present application is shown in Figure 7.

[0016] Figure 4 For Figure 1 The U-shaped pressing plate structure schematic diagram of the embodiment of the present application is shown in Figure 8.

[0017] Figure 5 For Figure 1 The power transmission device structure schematic diagram of the embodiment of the present application is shown in Figure 9.

[0018] In the drawings, the components represented by each number are listed as follows:

[0019] 1-base, 2-leg, 3-horizontal conveying device, 4-multi-DOF manipulator, 5-gantry, 6-screw pair, 7-deflection telescopic mechanism, 8-U-shaped pressing plate, 9-power transmission device, 10-first transmission shaft, 11-forward-reverse speed regulation motor, 30-chain plate conveying mechanism, 31-low speed motor, 32-second transmission shaft, 70-telescopic square tube sleeve, 71-third transmission shaft, 72-threaded rod threaded sleeve assembly, 73-transmission rack, 74-mounting gear, 75-electric push rod, 80-isosceles triangle, 81-limiting blind hole, 82-limiting block, 900-fourth transmission shaft, 901-slot steel section, 902-first spline shaft spline sleeve assembly, 903-conical friction wheel pair, 904-first moving plate, 905-first electric mortise lock, 906-first conical friction wheel, 907-second spline shaft spline sleeve assembly, 908-second moving plate, 909-second electric mortise lock, 910-third conical friction wheel, 911-second conical friction wheel. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0022] Please refer to Figure 1The present invention provides a technical solution: a transformer coil automatic shaping press, comprising a base 1, wherein the four corners of the bottom of the base 1 are fixed with supporting legs 2, a horizontal conveying device 3 is installed flush with the front and rear of the base 1, a multi-degree-of-freedom manipulator 4 is installed on the front side of the horizontal conveying device 3, a gantry 5 is fixed on the top of the base 1, and a lead screw pair 6 is vertically penetrated and rotatably installed on both sides of the inner cavity of the gantry 5, and a first transmission shaft 10 is installed on the top of the gantry 5 for horizontal rotation through a support seat, and the first transmission shaft 10 is connected to the top of the lead screw pair 6 on both sides through a bevel gear pair, a forward and reverse speed regulating motor 11 is installed on the top rear side of the gantry 5, a deflection and telescopic mechanism 7 is installed on the surface of the moving block of the lead screw pair 6, and a horizontal U-shaped pressing plate 8 is detachably installed on the outer ends of the deflection and telescopic mechanisms 7 on both sides, and a front side of the top of the gantry 5 is installed with a connecting rod connected to the forward and reverse speed regulating motor 11, the first transmission shaft 10 and the deflection and telescopic mechanism 7 The power output device 9 is provided, and a photoelectric sensor is installed on the front side of the inner wall of the gantry 5. The photoelectric sensor signal is connected to the controller, and the controller signal is connected to the multi-degree-of-freedom manipulator 4, the manual trigger module and the intermittent trigger. Specifically, the coil to be shaped is placed in the top front center of the horizontal conveying device 3. When the horizontal conveying device 3 transports it to the vicinity of the photoelectric sensor, the controller cooperates with the multi-degree-of-freedom manipulator 4 to clamp the coil and place it above the base 1. The forward and reverse speed regulating motor 11 moves the moving block of the screw pair 6 downward through the power transmission device 9, and the deflection and telescopic mechanism 7 drives the U-shaped pressure plate 8 to rotate inward. Finally, the deflection and telescopic mechanisms 7 on both sides drive the U-shaped pressure plates 8 on both sides to approach each other, squeeze the wire harness, and move the moving block downward for shaping. After the shaping is completed, the manual trigger module is used to make the multi-degree-of-freedom manipulator 4 clamp the coil and place it on the upper rear side of the horizontal conveying device 3 for output.

[0023] See also Figure 2 The horizontal conveying device 3 includes two chain conveying mechanisms 30 located in front and behind the base 1 and flush with it, a low-speed motor 31 is installed between the outer end of the outer roller shaft of one of the chain conveying mechanisms 30 and the side wall through a fixed support plate, and a second transmission shaft 32 that passes through the base 1 is installed horizontally and rotatably between the adjacent roller shafts of the front and rear chain conveying mechanisms 30 through a support seat, and the second transmission shaft 32 is connected to the adjacent roller shafts of the front and rear chain conveying mechanisms 30 through a worm gear assembly. Specifically: the low-speed motor 31 can make the outer chain conveying mechanism 30 work, and then use the second transmission shaft 32 and the worm gear assembly to make the inner chain conveying mechanism 30 work for continuous conveying.

[0024] See also Figure 3The deflection and telescopic mechanism 7 includes a telescopic square tube sleeve 70 that vertically rotates through the gantry 5 and is located on the front side of the screw pair 6, and a third transmission shaft 71 that is vertically mounted on the inner side of the surface of the moving block of the screw pair 6. The bottom of the telescopic square tube sleeve 70 is fixed with a threaded rod threaded sleeve assembly 72 that is vertically connected to the surface of the moving block. The outer wall of the threaded sleeve of the threaded rod threaded sleeve assembly 72 is vertically fixed with a transmission rack 73. The outer wall of the third transmission shaft 71 is fixedly sleeved with a mounting gear 74 that meshes with the transmission rack 73. The surface of the mounting gear 74 is horizontally fixed with an electric push rod 75. Specifically: through The power transmission device 9 makes the screw pairs 6 on both sides work. At the same time, the telescopic square tube sleeve 70 can be rotated forward and reverse, and then the threaded sleeve of the threaded rod threaded sleeve assembly 72 can move up and down. The installation gear 74 is rotated through the transmission rack 73 to make the electric push rod 75 horizontal. The electric push rod 75 is telescopic to make the U-shaped pressure plates 8 on both sides fit on the top of the wiring harness, and the moving block moves downward, which can be used for shaping. Elastic reels are installed above both sides of the inner cavity of the gantry 5. The elastic reel is wound with a control circuit connected to the mains and the electric push rod 75 through wires and forward and reverse switches to avoid tangling of the control wires.

[0025] See also Figure 4 The inner side of the U-shaped pressure plate 8 is in the shape of an isosceles triangle 80. The end faces of both sides of the U-shaped pressure plate 8 are respectively provided with a limit blind hole 81 and a matching limit block 82. The end of the limit blind hole 81 is open. A sleeve is fixed to the middle part of the outer side of the U-shaped pressure plate 8. A butterfly bolt is screwed through the outer wall of the sleeve. The sleeve is sleeved on the outer end of the deflection and telescopic mechanism 7. Specifically, U-shaped pressure plates 8 of different shapes and sizes are selected according to the shape of the coil. The isosceles triangle shape 80 is used to insert between the top harness and the coil.

[0026] See also Figure 5The power output device 9 includes a fourth transmission shaft 900 which is horizontally rotatably mounted on the top of the gantry 5 and located in front of the first transmission shaft 10 through a support seat. The outer walls of the fourth transmission shaft 900 are connected to the tops of the deflection and telescopic mechanisms 7 on both sides through worm gear assemblies. A channel steel section 901 located on the first transmission shaft 10 and the fourth transmission shaft 900 is fixed to the top of the gantry 5. A first spline shaft spline sleeve assembly 902 is horizontally penetrated and rotatably mounted on both sides of the channel steel section 901. The spline sleeve and the spline shaft of the first spline shaft spline sleeve assembly 902 are respectively slidably plugged and rotatably connected to the channel steel section 901. The first spline The left end of the spline shaft of the shaft spline sleeve assembly 902 is connected to the outer wall of the fourth transmission shaft 900 through a conical friction wheel pair 903. The outer wall of the spline sleeve of the first spline shaft spline sleeve assembly 902 is installed with a first movable plate 904 through a bearing. The outer side of the first movable plate 904 is horizontally connected to the inner wall of the channel steel section 901 through a first electric lock 905. The outer wall of the first transmission shaft 10 is fixedly sleeved with a first conical friction wheel 906. The outer end of the spline sleeve of the first spline shaft spline sleeve assembly 902 is fixed with a second conical friction wheel 911. The motor shaft of the forward and reverse speed regulating motor 11 is coaxially installed with a second spline shaft spline sleeve assembly Component 907, the outer wall of the spline sleeve of the second spline shaft spline sleeve assembly 907 is installed with a second movable plate 908 through a bearing, and a second electric latch 909 is fixed horizontally on the upper surface of the gantry 5. The outer end of the pin of the second electric latch 909 is fixed to the side wall of the second movable plate 908, and the outer end of the spline sleeve of the second spline shaft spline sleeve assembly 907 is coaxially fixed with two third conical friction wheels 910 with large end faces fixed to each other. The third conical friction wheels 910 on the left and right sides can be respectively fitted with the first conical friction wheel 906 and the second conical friction wheel 911. Specifically: the forward and reverse speed regulating motor 11 can rotate forward and reverse, and when the first electric latch 909 rotates forward and reverse, the second electric latch 909 rotates forward and reverse. When the lock 905 is energized and retracted, the second conical friction wheel 911 is fitted with the inner third conical friction wheel 910, and then the forward and reverse speed regulating motor 11 drives the second spline shaft spline sleeve assembly 907 to rotate forward and reverse, so that the first spline shaft spline sleeve assembly 902 allows the fourth transmission shaft 900 to rotate forward and reverse through the conical friction wheel pair 903, so that the telescopic square tube sleeve 70 rotates forward and reverse, and the threaded rod threaded sleeve assembly 72 moves up and down. When the second electric plug lock 909 is energized and retracted, the outer third conical friction wheel 910 is fitted with the first conical friction wheel 906, so that the first transmission shaft 10 can rotate forward and reverse, and the moving block of the screw pair 6 moves up and down.

[0027] When using the automatic shaping press for transformer coils of the present invention: the coil to be shaped is placed in the top front center of the horizontal conveying device 3. When the horizontal conveying device 3 transports it to the vicinity of the photoelectric sensor, the controller cooperates with the multi-degree-of-freedom manipulator 4 to clamp the coil and place it above the base 1, and between the horizontal symmetry axes of the U-shaped pressure plates 8 on both sides. The forward and reverse speed regulating motor 11 moves the moving block of the screw pair 6 downward through the power transmission device 9, and the deflection and telescopic mechanism 7 drives the U-shaped pressure plate 8 to rotate inward. Finally, the deflection and telescopic mechanisms 7 on both sides drive the U-shaped pressure plates 8 on both sides to approach each other, squeeze the wire harness, and move the moving block downward for shaping. After the shaping is completed, the manual trigger module is used to make the multi-degree-of-freedom manipulator 4 clamp the coil and place it on the upper rear side of the horizontal conveying device 3 for output.

[0028] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0029] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A transformer coil automatic shaping press, comprising a base (1), characterized in that: The four corners of the bottom of the base (1) are all fixed with supporting feet (2), the front and rear of the base (1) are flushly installed with a horizontal conveying device (3), and a multi-degree-of-freedom manipulator (4) is installed on the front side of the horizontal conveying device (3). A gantry (5) is fixed on the top of the base (1), and a lead screw pair (6) is vertically penetrated and rotatably installed on both sides of the inner cavity of the gantry (5). The top of the gantry (5) is horizontally rotatably installed with a first transmission shaft (10) through a support seat. The first transmission shaft (10) The gantry (5) is connected to the top of the screw pair (6) on both sides through a bevel gear pair, a forward and reverse speed regulating motor (11) is installed on the rear side of the top of the gantry (5), a deflection and telescopic mechanism (7) is installed on the surface of the moving block of the screw pair (6), and a horizontal U-shaped pressure plate (8) is detachably installed on the outer end of the deflection and telescopic mechanism (7) on both sides, and a power output device (9) connected to the forward and reverse speed regulating motor (11), the first transmission shaft (10) and the deflection and telescopic mechanism (7) is installed on the front side of the top of the gantry (5); The deflection and telescopic mechanism (7) comprises a telescopic square tube sleeve (70) which vertically rotates through the gantry (5) and is located on the front side of the screw pair (6), and a third transmission shaft (71) which vertically rotates and is mounted on the inner side of the surface of the moving block of the screw pair (6). A threaded rod threaded sleeve assembly (72) which is vertically connected to the surface of the moving block is fixed to the bottom of the telescopic square tube sleeve (70), a transmission rack (73) is vertically fixed to the outer wall of the threaded sleeve of the threaded rod threaded sleeve assembly (72), a mounting gear (74) which is meshed with the transmission rack (73) is fixedly sleeved on the outer wall of the third transmission shaft (71), and an electric push rod (75) is horizontally fixed to the surface of the mounting gear (74).

2. The automatic transformer coil shaping press according to claim 1, characterized in that: The horizontal conveying device (3) comprises two chain conveying mechanisms (30) located in front and behind the base (1) and flush with the base, wherein a low-speed motor (31) is installed between the outer end of the outer rod shaft of one of the chain conveying mechanisms (30) and the side wall via a fixed support plate, and a second transmission shaft (32) penetrating the base (1) is installed horizontally and rotatably between the adjacent rod shafts of the front and rear two chain conveying mechanisms (30) via a support seat, and the second transmission shaft (32) is connected to the adjacent rod shafts of the front and rear two chain conveying mechanisms (30) via a worm gear assembly.

3. The automatic transformer coil shaping press according to claim 1, characterized in that: Elastic drums are installed above both sides of the inner cavity of the gantry (5), and a control circuit connected to the mains power and the electric push rod (75) through a wire and a forward / reverse switch is wound on the elastic drum.

4. The automatic transformer coil shaping press according to claim 1, characterized in that: The inner side of the U-shaped pressure plate (8) is in the shape of an isosceles triangle (80), and the end faces of both sides of the U-shaped pressure plate (8) are respectively provided with a limit blind hole (81) and a matching limit block (82), and the end of the limit blind hole (81) is designed to be open. A sleeve is fixed to the middle part of the outer side of the U-shaped pressure plate (8), and a butterfly bolt is screwed through the outer wall of the sleeve. The sleeve is sleeved on the outer end of the deflection and telescopic mechanism (7).

5. The automatic transformer coil shaping press according to claim 1, characterized in that: A photoelectric sensor is installed on the front side of the inner wall of the gantry (5), and the photoelectric sensor signal is connected to a controller, and the controller signal is connected to the multi-degree-of-freedom manipulator (4), a manual trigger module and an intermittent trigger.

6. The automatic transformer coil shaping press according to claim 1, characterized in that: The power output device (9) includes a fourth transmission shaft (900) which is horizontally rotatably mounted on the top of the gantry (5) through a support seat and is located in front of the first transmission shaft (10). Both sides of the outer wall of the fourth transmission shaft (900) are connected to the top of the deflection and telescopic mechanism (7) on both sides through a worm gear assembly. A channel steel section (901) located on the first transmission shaft (10) and the fourth transmission shaft (900) is fixed on the top of the gantry (5). A channel steel section (901) is horizontally penetrated and rotatably mounted on both sides of the channel steel section (901). A first spline shaft spline sleeve assembly (902), the spline sleeve and the spline shaft of the first spline shaft spline sleeve assembly (902) are respectively connected to the channel steel section (901) by sliding insertion and rotation, the left end of the spline shaft of the first spline shaft spline sleeve assembly (902) is connected to the outer wall of the fourth transmission shaft (900) via a conical friction wheel pair (903), the outer wall of the spline sleeve of the first spline shaft spline sleeve assembly (902) is installed with a first movable plate (904) via a bearing, and the outer side of the first movable plate (904) The first transmission shaft (10) is connected to the inner wall of the channel steel section (901) horizontally through a first electric latch (905); the outer wall of the first transmission shaft (10) is fixedly sleeved with a first conical friction wheel (906); the outer end of the spline sleeve of the first spline shaft spline sleeve assembly (902) is fixed with a second conical friction wheel (911); the motor shaft of the forward and reverse speed regulating motor (11) is coaxially mounted with a second spline shaft spline sleeve assembly (907); the outer wall of the spline sleeve of the second spline shaft spline sleeve assembly (907) is mounted with a second A second electric latch (909) is horizontally fixed to the upper surface of the movable plate (908), the outer end of the latch pin of the second electric latch (909) is fixed to the side wall of the second movable plate (908), and two third conical friction wheels (910) with their large end faces fixed to each other are coaxially fixed to the outer end of the spline sleeve of the second spline shaft spline sleeve assembly (907), and the third conical friction wheels (910) on the left and right sides can respectively fit with the first conical friction wheel (906) and the second conical friction wheel (911).

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