Electric traction machine and control method thereof

Abstract

The invention relates to the technical field of traction machines, in particular to an electric traction machine and a control method thereof.The electric traction machine comprises a machine body, two traction wheels and two walking wheels are rotationally connected to the machine body, a traction rope is arranged on the two traction wheels, a supporting frame is installed at one end of the machine body, and a connecting frame is rotationally installed on the machine body; a mounting hole is formed in the connecting frame, and a guide assembly is arranged on the machine body; a fixing plate is fixedly connected to the machine body, a first motor is fixedly connected to the fixing plate, a reciprocating lead screw is fixedly connected to the driving end of the first motor, a sliding frame with the L-shaped cross section is in threaded connection with the reciprocating lead screw, and a sliding groove is formed in the surface of one side of the machine body. The winding device has the cycloid effect and the function of preventing rope twisting in the winding process, the winding effect is good, the practicability of the electric traction machine is good, and use of the electric traction machine is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of traction machines, and in particular to an electric traction machine and a control method thereof. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technology related to traction machines is also constantly improving. As an important power equipment for tension and wire laying of transmission lines, traction machines have achieved remote monitoring networking and intelligent tension and wire laying after digital transformation in recent years.

[0003] The electric traction machine currently used lacks a cycloidal structure when in use, and has no anti-twisting rope function during the winding process, resulting in a poor winding effect. The electric traction machine has poor practicality and is not conducive to the use of the electric traction machine. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: the electric traction machine currently used lacks a cycloid structure when in use, and has no anti-twisting rope function during the winding process, resulting in poor winding effect. The practicality of the electric traction machine is poor, which is not conducive to the use of the electric traction machine, and an electric traction machine and a control method thereof are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An electric traction machine, comprising a machine body, two traction wheels and two running wheels are rotatably connected to the machine body, traction ropes are arranged on the two traction wheels, a support frame is installed at one end of the machine body, a connecting frame is rotatably installed on the machine body, a mounting hole is opened on the connecting frame, and a guide assembly is arranged on the machine body;

[0007] A fixing plate is fixedly connected to the machine body, a first motor is fixedly connected to the fixing plate, a reciprocating screw is fixedly connected to the driving end of the first motor, a sliding frame with an L-shaped cross section is threadedly connected to the reciprocating screw, a sliding groove is provided on one side surface of the machine body, one end of the sliding frame is slidably connected to the sliding groove, and a driving assembly is provided on the machine body;

[0008] An annular plate is fixedly connected to the upper end of the sliding frame, an annular sleeve is fixedly connected to one side surface of the annular plate, an annular cavity is formed on the inner surface of the annular sleeve, and a limiting component is arranged on the annular plate.

[0009] Preferably, the drive assembly includes a second motor fixedly mounted on the machine body, a driving end of the second motor is fixedly connected to a rotating shaft, a first gear is fixedly connected to the rotating shaft, one end of each of the traction wheels is fixedly connected to a fixed shaft, each of the fixed shafts is fixedly connected to a second gear, and each of the second gears is meshingly connected to the first gear.

[0010] Preferably, the guide assembly includes a bracket fixedly mounted on the machine body, a fixing rod having an inverted concave cross-section fixedly connected to the bracket, three first guide wheels rotatably connected to the fixing rod, two second guide wheels rotatably connected to the bracket, and the three first guide wheels are arranged between the two second guide wheels.

[0011] Preferably, the limiting assembly comprises a plurality of sliding rods slidably mounted on the annular sleeve, one end of each of the sliding rods is fixedly connected to an arc-shaped plate, and a side surface of the arc-shaped plate is fixedly connected to a plurality of limiting teeth.

[0012] Preferably, a plurality of rectangular grooves are formed on one side surface of the annular plate, a slide plate is slidably installed in each of the rectangular grooves, and one end of each slide rod away from the arc-shaped plate is fixedly connected to the corresponding slide plate.

[0013] Preferably, a spring is fixedly connected to one side surface of each rectangular groove, and the spring is fixedly connected to the corresponding slide plate.

[0014] Preferably, the plurality of slide plates are connected by a pull rope, a mounting cavity is provided on the sliding frame, a moving block is slidably connected in the mounting cavity, and the pull rope and the moving block are fixedly connected.

[0015] Preferably, a hydraulic cylinder is fixedly connected to the lower inner wall of the installation cavity, and a driving end of the hydraulic cylinder is fixedly connected to the lower surface of the moving block.

[0016] Preferably, a plurality of ear plates are fixedly connected to one side surface of the annular plate, and each of the ear plates is provided with a through hole for connecting the pull rope.

[0017] The control method of the electric traction machine comprises the following steps:

[0018] S1: When in use, both the first motor and the second motor are powered on and work, the first motor drives the reciprocating screw to rotate, and the sliding frame moves back and forth along the reciprocating screw. When the second motor works, it drives the rotating shaft to rotate, thereby causing the first gear to rotate. When the first gear is meshed and connected with the two second gears, under the transmission action of the two second gears, the two fixed shafts will rotate relative to the machine body, thereby causing the two traction wheels to rotate together. The second motor drives the rotating shaft to rotate forward or reverse, thereby realizing the forward or reverse rotation of the traction wheel;

[0019] S2: When the annular plate and the annular sleeve move back and forth along the reciprocating screw rod, one end of the traction rope passes through the annular sleeve, so that the traction rope can move back and forth along the reciprocating screw rod, which has a cycloidal effect;

[0020] S3: When the traction rope stops winding, the hydraulic cylinder drives the moving block to move vertically downward. Under the transmission action of the pull rope, each slide plate will slide along the corresponding rectangular groove, so that multiple slide bars will slide relative to the annular sleeve at the same time, and each arc plate will move toward the traction rope until the limiting teeth on the surface of each arc plate penetrate into the traction rope, thereby locking the traction rope and preventing the traction rope from twisting at will.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The first motor drives the reciprocating screw to rotate, and the sliding frame moves back and forth along the reciprocating screw. When the second motor is working, it drives the rotating shaft to rotate, so that the first gear rotates. Under the transmission action of the two second gears, the two traction wheels rotate together. The second motor drives the rotating shaft to rotate forward or reversely, so as to facilitate the winding or unwinding of the traction rope. During the process of the annular plate and the annular sleeve moving back and forth along the reciprocating screw, one end of the traction rope passes through the annular sleeve, so that the traction rope can move back and forth along the reciprocating screw, which has a cycloid effect and has the function of preventing the rope from twisting during the winding process. The winding effect is good, the practicality of the electric traction machine is good, and it is conducive to the use of the electric traction machine;

[0023] 2. When the traction rope is suspended from winding, the hydraulic cylinder drives the moving block to move vertically downward. During the downward movement of the moving block inside the installation cavity, under the transmission action of the pull rope, each slide plate will slide along the corresponding rectangular groove, thereby causing multiple slide bars to slide relative to the annular sleeve at the same time, and each arc plate will move in the direction close to the traction rope until the limiting teeth on the surface of each arc plate penetrate into the traction rope, thereby locking the traction rope and preventing the traction rope from twisting at will, so as to facilitate the use of the electric traction machine;

[0024] 3. The traction machine uses a power battery to power the first motor and the second motor to realize the process of converting electrical energy into mechanical energy, providing a power source for the movement and force transmission of the equipment, replacing the existing internal combustion engine's way of converting chemical energy into mechanical energy;

[0025] 4. The second motor is used to directly drive the gear mechanism to realize the transmission of motion and force, replacing the original hydraulic transmission system. At the same time, each movement adopts a distributed independent transmission form, and the central controller realizes the coordinated control motion relationship of multi-motor drive transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front structural schematic diagram of an electric traction machine proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of the back structure of an electric traction machine proposed by the present invention;

[0028] Figure 3 A schematic diagram of the top view of the electric traction machine proposed by the present invention;

[0029] Figure 4 A schematic diagram of a partial internal structure of an electric traction machine proposed by the present invention from a side view;

[0030] Figure 5 It is a front cross-sectional structural schematic diagram of the fixing rod in the present invention;

[0031] Figure 6 It is a front structural schematic diagram of the sliding frame and the annular plate in the present invention;

[0032] Figure 7 for Figure 6 Schematic diagram of the locally enlarged structure of A in the middle.

[0033] In the figure: 1 body, 2 traction wheel, 3 walking wheel, 4 bracket, 5 first guide wheel, 6 second guide wheel, 7 sliding frame, 8 support frame, 9 connecting frame, 10 second gear, 11 fixed shaft, 12 second motor, 13 rotating shaft, 14 first gear, 15 annular plate, 16 hydraulic cylinder, 17 reciprocating screw rod, 18 first motor, 19 fixed plate, 20 slide groove, 21 fixed rod, 22 annular sleeve, 23 annular cavity, 24 moving block, 25 arc plate, 26 slide plate, 27 pull rope, 28 rectangular groove, 29 slide rod, 30 spring, 31 ear plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-Figure 7An electric traction machine comprises a machine body 1, on which two traction wheels 2 and two walking wheels 3 are rotatably connected, and traction ropes (not shown) are arranged on the two traction wheels 2, a support frame 8 is installed at one end of the machine body 1, a connecting frame 9 is rotatably installed on the machine body 1, and a mounting hole is provided on the connecting frame 9, and a guide assembly is provided on the machine body 1, a fixing plate 19 is fixedly connected to the machine body 1, and a first motor 18 is fixedly connected to the fixing plate 19, and a reciprocating screw rod 17 is fixedly connected to the driving end of the first motor 18, and a sliding frame 7 with an L-shaped cross section is threadedly connected to the reciprocating screw rod 17, a slide groove 20 is provided on one side surface of the machine body 1, and one end of the sliding frame 7 is slidably connected to the slide groove 20, and a driving assembly is provided on the machine body 1.

[0036] An annular plate 15 is fixedly connected to the upper end of the sliding frame 7, an annular sleeve 22 is fixedly connected to one side surface of the annular plate 15, an annular cavity 23 is opened on the inner surface of the annular sleeve 22, a limit assembly is arranged on the annular plate 15, a first motor 18 and a second motor 12 are powered by a power battery, a process of converting electrical energy into mechanical energy is realized, a power source is provided for the movement and force transmission of the equipment, and a method of converting chemical energy into mechanical energy of the existing internal combustion engine is replaced. The driving assembly includes a second motor 12 fixedly mounted on the body 1, a driving end of the second motor 12 is fixedly connected to a rotating shaft 13, a first gear 14 is fixedly connected to the rotating shaft 13, one end of each traction wheel 2 is fixedly connected to a fixed shaft 11, each fixed shaft 11 is fixedly connected to a second gear 10, and each second gear 10 is meshed with the first gear 14.

[0037] When the second motor 12 is working, it will drive the rotating shaft 13 to rotate, thereby causing the first gear 14 to rotate. When the first gear 14 is meshed and connected with the two second gears 10, under the transmission action of the two second gears 10, the two fixed shafts 11 will rotate relative to the body 1, thereby causing the two traction wheels 2 to rotate together. The second motor 12 drives the rotating shaft 13 to rotate forward or reverse, thereby realizing the forward or reverse rotation of the traction wheel 2, so as to facilitate the winding or unwinding of the traction rope. The second motor 12 is used to directly drive the gear mechanism to realize the transmission of motion and force, thereby replacing the original hydraulic transmission system. At the same time, each motion adopts a distributed independent transmission form, and the central controller realizes the coordinated control motion relationship of the multi-motor drive transmission.

[0038] The guide assembly includes a bracket 4 fixedly mounted on the body 1, a fixed rod 21 with an inverted concave cross-section fixedly connected to the bracket 4, three first guide wheels 5 rotatably connected to the fixed rod 21, two second guide wheels 6 rotatably connected to the bracket 4, the three first guide wheels 5 are arranged between the two second guide wheels 6, when the traction rope is reeled and unreeled, one end of the traction rope will pass between the multiple first guide wheels 5, the three first guide wheels 5 and the two second guide wheels 6 have a good guiding effect on the movement of the traction rope.

[0039] The limiting assembly includes a plurality of slide rods 29 slidably mounted on the annular sleeve 22, one end of each slide rod 29 is fixedly connected to an arc plate 25, one side surface of the arc plate 25 is fixedly connected to a plurality of limiting teeth, one side surface of the annular plate 15 is provided with a plurality of rectangular grooves 28, a slide plate 26 is slidably mounted in each rectangular groove 28, one end of each slide rod 29 away from the arc plate 25 is fixedly connected to the corresponding slide plate 26, one side surface of each rectangular groove 28 is fixedly connected to a spring 30, the spring 30 is fixedly connected to the corresponding slide plate 26, a plurality of slide plates 26 are connected by a pull rope 27, an installation cavity is provided on the sliding frame 7, a moving block 24 is slidably connected in the installation cavity, and the pull rope 27 is fixedly connected to the moving block 24.

[0040] The lower inner wall of the installation cavity is fixedly connected with a hydraulic cylinder 16, and the driving end of the hydraulic cylinder 16 is fixedly connected to the lower surface of the moving block 24. A plurality of ear plates 31 are fixedly connected to one side surface of the annular plate 15, and each ear plate 31 is provided with a through hole for connecting the pull rope 27. In the initial state, the plurality of arc plates 25 are completely located inside the annular cavity 23, which can effectively prevent the limit teeth on the arc plates 25 from hindering the movement of the traction rope. When the traction rope is suspended, the hydraulic cylinder 16 drives the moving block 24 to move vertically downward. Since the inelastic pull rope 27 is connected to the four The slide plates 26 are fixedly connected, and one end of the pull rope 27 passes through the through holes on the multiple ear plates 31 in sequence. When the moving block 24 moves downward in the installation cavity, under the transmission action of the pull rope 27, each slide plate 26 will slide along the corresponding rectangular groove 28, and each spring 30 will deform at the same time, so that the multiple slide rods 29 will slide relative to the annular sleeve 22 at the same time, and each arc plate 25 will move in the direction close to the traction rope until the limiting teeth on the surface of each arc plate 25 are inserted into the traction rope, thereby locking the traction rope.

[0041] The control method of the electric traction machine comprises the following steps:

[0042] S1: When in use, both the first motor 18 and the second motor 12 are powered on and work, the first motor 18 drives the reciprocating screw 17 to rotate, and the sliding frame 7 moves back and forth along the reciprocating screw 17. When the second motor 12 is working, it drives the rotating shaft 13 to rotate, thereby causing the first gear 14 to rotate. When the first gear 14 is meshed and connected with the two second gears 10, under the transmission action of the two second gears 10, the two fixed shafts 11 will rotate relative to the machine body 1, thereby causing the two traction wheels 2 to rotate together. The second motor 12 drives the rotating shaft 13 to rotate forward or reverse, thereby realizing the forward or reverse rotation of the traction wheel 2;

[0043] S2: When the annular plate 15 and the annular sleeve 22 move back and forth along the reciprocating screw rod 17, one end of the traction rope passes through the annular sleeve 22, so that the traction rope can move back and forth along the reciprocating screw rod 17, which has a cycloid effect;

[0044] S3: When the traction rope stops winding, the hydraulic cylinder 16 drives the moving block 24 to move vertically downward. Under the transmission action of the pull rope 27, each slide plate 26 will slide along the corresponding rectangular groove 28, so that multiple slide rods 29 will slide relative to the annular sleeve 22 at the same time, and each arc plate 25 will move toward the direction close to the traction rope until the limiting teeth on the surface of each arc plate 25 penetrate into the traction rope, thereby locking the traction rope and preventing the traction rope from twisting at will.

[0045] In the present invention, when in use, the first motor 18 and the second motor 12 are both powered on and working, the first motor 18 drives the reciprocating screw 17 to rotate, the sliding frame 7 moves back and forth along the reciprocating screw 17, and slides relatively with the slide slot 20, the second motor 12 drives the rotating shaft 13 to rotate when working, and then the first gear 14 rotates, and when the first gear 14 is meshed and connected with the two second gears 10, under the transmission action of the two second gears 10, the two fixed shafts 11 rotate relatively with the machine body 1, so that the two The traction wheel 2 rotates together, and the second motor 12 drives the rotating shaft 13 to rotate forward or reverse, so that the traction wheel 2 can rotate forward or reverse, so as to facilitate the winding or unwinding of the traction rope. During the process of the annular plate 15 and the annular sleeve 22 moving back and forth along the reciprocating screw rod 17, one end of the traction rope passes through the annular sleeve 22, so that the traction rope can move back and forth along the reciprocating screw rod 17, which has a cycloidal effect and has the function of preventing the rope from twisting during the winding process. The winding effect is better, the practicality of the electric traction machine is better, and it is conducive to the use of the electric traction machine.

[0046] In the initial state, the multiple arc plates 25 are completely located inside the annular cavity 23. When the traction rope is suspended, the hydraulic cylinder 16 drives the moving block 24 to move vertically downward. Since the inelastic pull rope 27 is fixedly connected to the four slide plates 26, and one end of the pull rope 27 passes through the through holes on the multiple ear plates 31 in sequence, when the moving block 24 moves downward inside the installation cavity, under the transmission action of the pull rope 27, each slide plate 26 will slide along the corresponding rectangular groove 28, and each spring 30 will deform at the same time, thereby causing the multiple slide bars 29 to slide relative to the annular sleeve 22 at the same time, and each arc plate 25 will move in the direction close to the traction rope until the limit teeth on the surface of each arc plate 25 are inserted into the traction rope, thereby locking the traction rope and preventing the traction rope from twisting at will, so as to facilitate the use of the electric traction machine.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric traction machine, comprising a machine body (1), characterized in that: The machine body (1) is rotatably connected to two traction wheels (2) and two walking wheels (3), the two traction wheels (2) are provided with traction ropes, a support frame (8) is installed at one end of the machine body (1), a connecting frame (9) is rotatably installed on the machine body (1), a mounting hole is opened on the connecting frame (9), and a guide component is provided on the machine body (1); The machine body (1) is fixedly connected to a fixing plate (19), the fixing plate (19) is fixedly connected to a first motor (18), a driving end of the first motor (18) is fixedly connected to a reciprocating screw rod (17), a sliding frame (7) having an L-shaped cross section is threadedly connected to the reciprocating screw rod (17), a sliding groove (20) is provided on one side surface of the machine body (1), one end of the sliding frame (7) is slidably connected to the sliding groove (20), and a driving component is provided on the machine body (1); The upper end of the sliding frame (7) is fixedly connected to an annular plate (15), one side surface of the annular plate (15) is fixedly connected to an annular sleeve (22), an inner surface of the annular sleeve (22) is provided with an annular cavity (23), and a limit position assembly is provided on the annular plate (15).

2. An electric traction machine according to claim 1, characterized in that: The driving assembly comprises a second motor (12) fixedly mounted on the machine body (1); a driving end of the second motor (12) is fixedly connected to a rotating shaft (13); a first gear (14) is fixedly connected to the rotating shaft (13); one end of each traction wheel (2) is fixedly connected to a fixed shaft (11); each fixed shaft (11) is fixedly connected to a second gear (10); and each second gear (10) is meshedly connected to the first gear (14).

3. The electric traction machine according to claim 1, characterized in that: The guide assembly comprises a bracket (4) fixedly mounted on the machine body (1); a fixing rod (21) having a cross section in the shape of an inverted concave letter "U" is fixedly connected to the bracket (4); three first guide wheels (5) are rotatably connected to the fixing rod (21); two second guide wheels (6) are rotatably connected to the bracket (4); the three first guide wheels (5) are arranged between the two second guide wheels (6).

4. The electric traction machine according to claim 2, characterized in that: The limiting assembly comprises a plurality of slide rods (29) slidably mounted on the annular sleeve (22), one end of each slide rod (29) being fixedly connected to an arc plate (25), and a side surface of the arc plate (25) being fixedly connected to a plurality of limiting teeth.

5. The electric traction machine according to claim 4, characterized in that: A plurality of rectangular grooves (28) are provided on one side surface of the annular plate (15), a slide plate (26) is slidably installed in each of the rectangular grooves (28), and one end of each slide rod (29) away from the arc plate (25) is fixedly connected to the corresponding slide plate (26).

6. The electric traction machine according to claim 5, characterized in that: A spring (30) is fixedly connected to one side surface of each rectangular groove (28), and the spring (30) is fixedly connected to the corresponding slide plate (26).

7. The electric traction machine according to claim 5, characterized in that: The plurality of slide plates (26) are connected by a pull rope (27); a mounting cavity is provided on the sliding frame (7); a moving block (24) is slidably connected in the mounting cavity; and the pull rope (27) and the moving block (24) are fixedly connected.

8. The electric traction machine according to claim 7, characterized in that: A hydraulic cylinder (16) is fixedly connected to the lower inner wall of the installation cavity, and a driving end of the hydraulic cylinder (16) is fixedly connected to the lower surface of the moving block (24).

9. The electric traction machine according to claim 7, characterized in that: A plurality of ear plates (31) are fixedly connected to one side surface of the annular plate (15), and each ear plate (31) is provided with a through hole for connecting the pull rope (27).

10. A control method for an electric traction machine according to claim 8, characterized in that: The following steps are involved: S1: When in use, the first motor (18) and the second motor (12) are both powered on and work, the first motor (18) drives the reciprocating screw (17) to rotate, and the sliding frame (7) moves back and forth along the reciprocating screw (17). When the second motor (12) is working, it drives the rotating shaft (13) to rotate, thereby causing the first gear (14) to rotate. When the first gear (14) is meshed with the two second gears (10), under the transmission action of the two second gears (10), the two fixed shafts (11) and the machine body (1) rotate relative to each other, thereby causing the two traction wheels (2) to rotate together. The second motor (12) drives the rotating shaft (13) to rotate forward or reverse, thereby realizing the forward or reverse rotation of the traction wheel (2); S2: When the annular plate (15) and the annular sleeve (22) move back and forth along the reciprocating screw rod (17), one end of the traction rope passes through the annular sleeve (22), so that the traction rope can move back and forth along the reciprocating screw rod (17), which has a cycloidal effect; S3: When the traction rope is suspended from winding, the hydraulic cylinder (16) drives the moving block (24) to move vertically downward. Under the transmission action of the pull rope (27), each slide plate (26) will slide along the corresponding rectangular groove (28), thereby causing multiple slide bars (29) to slide relative to the annular sleeve (22) at the same time, and each arc plate (25) will move in the direction close to the traction rope until the limiting teeth on the surface of each arc plate (25) penetrate into the traction rope, thereby locking the traction rope and preventing the traction rope from twisting at will.

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