A hydraulic motor driven rotary unwinding trolley

Abstract

This invention belongs to the field of spiral submerged arc welded pipe manufacturing, specifically relating to a hydraulic motor-driven rotary uncoiling trolley. It aims to solve the problem of repeated overload tripping of the geared motor, which seriously affects the safe operation and production efficiency of the equipment. The invention includes a trolley body, a hydraulic motor drive mechanism, a rotating roller device, and a transmission mechanism. The hydraulic motor drive mechanism, the rotating roller device, and the sprocket and chain transmission mechanism are all mounted on the trolley body. The hydraulic motor drive mechanism is located on both sides of the rotating roller device. The hydraulic motor drive mechanism is connected to the rotating roller device via the transmission mechanism. This invention effectively solves the problems of frequent power tripping faults caused by overload of the rotating roller geared motor in existing uncoiling trolleys and the difficulty of the uncoiling process. It also significantly reduces the difficulty of replacing the rotating roller drive device of the uncoiling trolley and improves maintenance efficiency.

Description

Technical Field

[0001] This invention belongs to the field of spiral submerged arc welded pipe manufacturing, and specifically relates to a hydraulic motor driven rotary uncoiling trolley. Background Technology

[0002] Currently, with the increasing diversification of spiral submerged arc welded pipe products, especially their widespread application in the fields of piles and water pipes, the requirements for the use of uncoiling trolleys in spiral submerged arc welded pipe production units have also changed significantly. Taking the uncoiling process of Q355B material, 22mm and 25mm wall thickness steel strip coils as an example, due to the extremely high "viscosity" of this type of low-grade steel, thick-walled steel strip coil, the winding of each layer of the steel strip coil is very tight. The uncoiling resistance is far greater than that of high-grade steel, thick-walled steel strip coils, causing the rotating roller reduction motor of the uncoiling trolley to repeatedly experience overload and trip. However, frequent starting operations will cause the motor to burn out due to severe overheating, and even damage the reducer, seriously affecting the safe operation of the equipment and production efficiency.

[0003] In order to effectively resist the large unwinding resistance of low-grade steel strip with thick walls, and to prevent frequent overload tripping of the unwinding trolley rotary roller geared motor during the unwinding process, the existing technical solution is to double the power of the currently used unwinding trolley rotary roller geared motor, that is, to double the output torque.

[0004] While the above technical solutions can solve the problems of frequent power outages caused by overload of the rotary roller geared motor in the existing unwinding trolley and the difficulty of the unwinding process, they also present new challenges to the design structure of the unwinding trolley itself. This is because the size of the geared motor will also increase with the increase in power, which poses a challenge to the unwinding trolley, which is already limited by its structural space. The installation space of the existing rotary roller geared motor is basically full with no spare space. If the technical solution of increasing the power of the rotary roller geared motor is adopted, the structure of the existing unwinding trolley needs to be redesigned.

[0005] Therefore, in order to ensure the safe operation of equipment, improve production efficiency, and reduce maintenance costs, a hydraulic motor-driven rotary unwinding trolley is adopted to replace the traditional motor-reducer-driven rotary unwinding trolley, which significantly increases the output torque of the unwinding trolley's rotating rollers and has high application value. Summary of the Invention

[0006] To address the problem of repeated overload tripping of geared motors in existing technologies, which seriously affects the safe operation of equipment and production efficiency, this invention provides a hydraulic motor-driven rotary unwinding trolley, comprising a trolley body, a hydraulic motor drive mechanism, a rotary roller device, and a transmission mechanism.

[0007] The hydraulic motor drive mechanism, the rotating roller device, and the sprocket and chain transmission mechanism are all mounted on the vehicle body. The hydraulic motor drive mechanism is located on both sides of the rotating roller device, and the hydraulic motor drive mechanism is connected to the rotating roller device through the transmission mechanism.

[0008] According to some embodiments of this application, a hydraulic motor driven rotary unwinding trolley is provided. The hydraulic motor drive mechanism includes a first drive mechanism and a second drive mechanism. The first drive mechanism includes a first hydraulic motor mounting base and a first hydraulic motor disposed on the first hydraulic motor mounting base. The structure of the second drive mechanism is the same as that of the first drive mechanism.

[0009] According to some embodiments of this application, a hydraulic motor-driven rotary unwinding trolley is provided, wherein the rotary roller device includes a first rotary roller device and a second rotary roller device;

[0010] The first rotating roller device includes a first bearing seat, a second bearing seat, a first rotating roller, a second rotating roller, and a first roller shaft. The first bearing seat and the second bearing seat are disposed on both sides of the first roller shaft. The first rotating roller and the second rotating roller are coaxially mounted on the first roller shaft at intervals. The structure of the second rotating roller device is the same as that of the first rotating roller device. The first rotating roller device and the second rotating roller device are symmetrically arranged.

[0011] According to some embodiments of this application, a hydraulic motor-driven rotary unwinding trolley is provided, wherein the transmission mechanism includes a first transmission mechanism and a second transmission mechanism;

[0012] The first transmission mechanism includes a first chain, a first small sprocket, a first transmission tensioning mechanism, and a first large sprocket;

[0013] The first small sprocket is coaxially mounted on the output end of the first drive mechanism, the first large sprocket is coaxially mounted on the first rotating roller device, the first small sprocket and the first large sprocket are connected by the first chain drive, the first transmission tensioning mechanism is used to tension the first chain, and the structure of the second transmission mechanism is the same as that of the first transmission mechanism.

[0014] According to some embodiments of this application, a hydraulic motor-driven rotary unwinding trolley further includes traveling wheels and a traveling track. The traveling wheels are disposed at the bottom of the trolley body and are adapted to the traveling track.

[0015] According to some embodiments of this application, a hydraulic motor-driven rotary unwinding trolley further includes a trolley body travel drive mechanism, which is disposed on one side of the trolley body and is connected to the travel wheel via a transmission.

[0016] According to some embodiments of this application, a hydraulic motor-driven rotary unwinding trolley is provided, which further includes an unwinding cone device, and the trolley body can move along a travel track toward the unwinding cone device.

[0017] According to some embodiments of this application, a hydraulic motor-driven rotary unwinding trolley also includes a shovel head swing cylinder, a shovel head device, and a linkage mechanism.

[0018] The shovel head swing cylinder is connected to the shovel head device through the linkage mechanism.

[0019] The beneficial effects of this invention are:

[0020] Compared to rotary uncoiling trolleys driven by electric motors and reducers, hydraulic motor-driven rotary uncoiling trolleys have a higher output torque and can match the appropriate output torque according to the specifications of the steel strip coils, resulting in significant energy savings.

[0021] Compared to the rotary unwinding trolley driven by a motor reducer, the hydraulic motor-driven rotary unwinding trolley has a simpler structure and can effectively solve the problems of frequent power tripping failures caused by overload of the rotary roller reducer motor in the existing unwinding trolley and the difficulty of the unwinding process. At the same time, it can also significantly reduce the difficulty of replacing the rotary roller drive device of the unwinding trolley and improve maintenance efficiency. Attached Figure Description

[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of some embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the side structure of the vehicle body according to some embodiments of this application;

[0025] Figure 3 This is a top view schematic diagram of the vehicle body top structure according to some embodiments of this application;

[0026] Figure 4 These are schematic diagrams illustrating the specific structures of the hydraulic motor drive mechanism, rotating roller device, and transmission mechanism according to some embodiments of this application.

[0027] Figure 5 This is a schematic diagram showing the position and structure of the first and second chains in some embodiments of this application;

[0028] Figure 6 This is a schematic diagram of the hydraulic system of the unwinding trolley in some embodiments of this application.

[0029] In the diagram: 1. Steel strip coil; 2. Vehicle body; 3. Wheels; 4. Hydraulic motor drive mechanism; 41. First drive mechanism; 411. First hydraulic motor mounting base; 412. First hydraulic motor; 42. Second drive mechanism; 421. Second hydraulic motor mounting base; 422. Second hydraulic motor; 5. Rotating roller assembly; 51. First rotating roller assembly; 511. First bearing seat; 512. Second bearing seat; 513. First rotating roller; 514. Second rotating roller; 515. First roller shaft; 52. Second rotating roller assembly; 521. Third bearing seat; 522. Fourth bearing seat; 523. Third rotating roller; 524. Fourth rotating roller; 525. Second roller shaft; 6. Transmission mechanism; 61. First transmission mechanism; 611. First chain; 612. First small sprocket; 613. First transmission tensioning mechanism; 614. First large sprocket; 62. 621. Second transmission mechanism; 622. Second chain; 623. Second small sprocket; 624. Second transmission tensioning mechanism; 625. Second large sprocket; 7. Traveling track; 8. Vehicle body traveling drive mechanism; 9. Anti-collision roller; 10. Uncoiling cone device; 11. Shovel head swing cylinder; 12. Shovel head device; 13. Linkage mechanism; 20. Switch; 30. Filter; 40. Hydraulic oil pump; 50. Check valve; 60. Electromagnetic overflow. Valve; 70, Solenoid directional valve; 80, Synchronization valve; 90, First balancing valve; 91, Second balancing valve; 110, First solenoid ball valve; 120, Second solenoid ball valve; 111, Oil tank; 901, First check valve; 902, First sequence valve; 903, Third sequence valve; 904, Third check valve; 911, Second check valve; 912, Second sequence valve; 913, Fourth sequence valve; 914, Fourth check valve. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figure 1-6 As shown, the present invention provides a hydraulic motor driven rotary unwinding trolley, including a trolley body 2, a hydraulic motor drive mechanism 4, a rotary roller device 5, and a transmission mechanism 6.

[0033] The hydraulic motor drive mechanism 4, the rotating roller device 5, and the sprocket and chain transmission mechanism 6 are all mounted on the vehicle body 2. The hydraulic motor drive mechanism 4 is located on both sides of the rotating roller device 5 and is connected to the rotating roller device 5 through the transmission mechanism 6.

[0034] In practice, a steel strip roll 1 is placed on the rotating roller device 5. The hydraulic motor drive mechanism 4 drives the transmission mechanism 6 to rotate, thereby driving the rotating roller device 5 and the steel strip roll 1 to rotate, which is used for uncoiling the steel strip roll 1.

[0035] In some embodiments, an imported German Rexroth brand hydraulic motor can be used, which can withstand a maximum pressure of 42 MPa. According to the hydraulic motor output torque formula T(motor output torque) = Ts(torque density: this value can be found in the product catalog depending on the selected hydraulic motor model; unit: N·m / bar) × P(system set pressure; unit: bar), the motor output torque changes with the adjustment of the hydraulic motor system pressure. The hydraulic motor output torque can be synchronized with the load, resulting in a significant improvement in system operating efficiency compared to traditional motor-driven rotary unwinding trolleys. Furthermore, the maximum output torque of the hydraulic motor-driven rotary unwinding trolley is increased to more than 2.5 times the original. This not only saves energy but also effectively solves the problems of frequent power outages caused by overload of the rotary roller reduction motor in existing unwinding trolleys and difficulties in the unwinding process. In addition to the above advantages, it also significantly reduces the difficulty of replacing the rotary roller drive device of the unwinding trolley and improves maintenance efficiency. In traditional mechanical structures, the rotating rollers are driven to rotate by a motor reducer installed below them. When the motor reducer is replaced due to failure, both rotating rollers, with a total weight of 2.3 tons, must be removed before the motor reducer can be replaced. However, the hydraulic motor driven rotary unwinding trolley provided in this application has rotating rollers driven to rotate by hydraulic motors installed on both sides. When the hydraulic motors are replaced due to failure, it is not necessary to remove the two rotating rollers, with a total weight of 2.3 tons.

[0036] In some embodiments, the hydraulic motor drive mechanism 4 includes a first drive mechanism 41 and a second drive mechanism 42. The first drive mechanism 41 includes a first hydraulic motor mounting base 411 and a first hydraulic motor 412 disposed on the first hydraulic motor mounting base 411. The structure of the second drive mechanism 42 is the same as that of the first drive mechanism 41.

[0037] In a specific implementation, the second drive mechanism 42 includes a second hydraulic motor mounting base 421 and a second hydraulic motor 422 disposed on the second hydraulic motor mounting base 421.

[0038] In some embodiments, the rotating roller device 5 includes a first rotating roller device 51 and a second rotating roller device 52;

[0039] The first rotating roller device 51 includes a first bearing seat 511, a second bearing seat 512, a first rotating roller 513, a second rotating roller 514, and a first roller shaft 515. The first bearing seat 511 and the second bearing seat 512 are disposed on both sides of the first roller shaft 515. The first rotating roller 513 and the second rotating roller 514 are coaxially mounted on the first roller shaft 515 at intervals. The structure of the second rotating roller device 52 is the same as that of the first rotating roller device 51. The first rotating roller device 51 and the second rotating roller device 52 are symmetrically arranged.

[0040] In a specific implementation, the second rotating roller device 52 includes a third bearing seat 521, a fourth bearing seat 522, a third rotating roller 523, a fourth rotating roller 524, and a second roller shaft 525. The third bearing seat 521 and the fourth bearing seat 522 are disposed on both sides of the second roller shaft 525, and the third rotating roller 523 and the fourth rotating roller 524 are coaxially mounted on the second roller shaft 525 at intervals.

[0041] In some embodiments, the transmission mechanism 6 includes a first transmission mechanism 61 and a second transmission mechanism 62;

[0042] The first transmission mechanism 61 includes a first chain 611, a first small sprocket 612, a first transmission tensioning mechanism 613, and a first large sprocket 614;

[0043] The first small sprocket 612 is coaxially mounted on the output end of the first drive mechanism 41, and the first large sprocket 614 is coaxially mounted on the first rotating roller device 51. The first small sprocket 612 and the first large sprocket 614 are connected by a first chain 611. The first transmission tensioning mechanism 613 is used to tension the first chain 611. The structure of the second transmission mechanism 62 is the same as that of the first transmission mechanism 61.

[0044] In specific implementation, the first drive mechanism 41 is mounted on the upper part of the trolley body 2 via the first hydraulic motor mounting seat 411, the first rotating roller device 51 is mounted on the upper part of the trolley body 2 via the first bearing seat 511 and the second bearing seat 512, the first small sprocket 612 of the first transmission mechanism 61 is mounted on the output shaft end of the first drive mechanism 41 via bolts and a baffle, the first large sprocket 614 of the first transmission mechanism 61 is mounted on the middle part of the first roller shaft 515 of the first rotating roller device 51 via a connecting key, and the first small sprocket 612 mounted on the first drive mechanism 41 and the first large sprocket 614 mounted on the first rotating roller device 51 are connected together via the first chain 611 of the first transmission mechanism 61; similarly, the second drive mechanism 42 is mounted on the upper part of the trolley body 2 via the second hydraulic motor mounting seat 421, and the second rotating roller device 52 is mounted on the upper part of the trolley body 2 via the third bearing seat 521 and the fourth bearing seat 522.

[0045] The second transmission mechanism 62 includes a second chain 621, a second small sprocket 622, a second transmission tensioning mechanism 623, and a second large sprocket 624. The second small sprocket 622 is mounted to the output shaft end of the second hydraulic motor 422 by bolts and a baffle. The second large sprocket 624 of the second transmission mechanism 62 is mounted to the middle of the second roller shaft 525 of the second rotating roller device 52 by a connecting key. The second small sprocket 622 mounted on the second drive mechanism 42 and the second large sprocket 624 mounted on the second rotating roller device are connected together by the second chain 621 of the second transmission mechanism 62. The second transmission tensioning mechanism 623 is used to tension the second chain 621.

[0046] The principle of the hydraulic motor-driven rotary unwinding trolley and its hydraulic system is as follows: Figure 6As shown, after motor M1 starts, it drives hydraulic oil pump 40 to rotate. The oil in oil tank 111 returns to the oil tank through switch 20, filter 30, check valve 50, the neutral position of solenoid directional valve 70, and solenoid relief valve 60. At this time, the first hydraulic motor 412 and the second hydraulic motor 422 do not work. When the solenoid terminal DT1 of solenoid relief valve 60 is energized and the solenoid terminal DT2 of solenoid directional valve 70 is energized, the pressurized oil reaches the synchronization valve 80 through port a on the left end of solenoid directional valve 70. After the oil flows through synchronization valve 80, the two equal flow rates of oil will flow through branches m and n respectively, flowing through the first balance valve 90 and the left branch of the second balance valve 91. One-way valve 901 and the second one-way valve 911 enter the A port and A' port of the first hydraulic motor 412 and the second hydraulic motor 422, respectively. At this time, the oil discharged from the B port and B' port of the first hydraulic motor 412 and the second hydraulic motor 422 passes through the third sequence valve 903 and the fourth sequence valve 913 of the right branch of the first balance valve 90 and the second balance valve 91, respectively, and then merges into a single oil branch at point K. After passing through the b port of the left end of the solenoid directional valve 70, the oil returns to the oil tank. This enables the first hydraulic motor 412 and the second hydraulic motor 422 to drive the first rotating roller device 51 and the second rotating roller device 52 to rotate clockwise, thereby further realizing the first rotation... The rotating roller device 51 and the second rotating roller device 52 together drive the steel strip coil 1 to rotate clockwise; similarly, when the electromagnetic end DT1 of the electromagnetic overflow valve 60 is energized and the electromagnetic end DT3 of the electromagnetic reversing valve 70 is energized, the pressurized oil is divided into two equal-flow-rate oil streams at point K through the x port on the right end of the electromagnetic reversing valve 70. These streams flow through the third check valve 904 and the fourth check valve 914 on the right branch of the first balance valve 90 and the second balance valve 91, respectively, and then enter the B port and B' port of the first hydraulic motor 412 and the second hydraulic motor 422, respectively. At this time, the oil streams discharged from the A port and A' port of the first hydraulic motor 412 and the second hydraulic motor 422 are respectively... After passing through the first sequence valve 902 and the second sequence valve 912 on the left branch of the first balance valve 90 and the second balance valve 91, the oil flows through the synchronization valve 80 to form an oil branch, and then returns to the oil tank through the Y port on the right end of the electromagnetic reversing valve 70. This enables the first hydraulic motor 412 and the second hydraulic motor 422 to drive the first rotating roller device 51 and the second rotating roller device 52 to rotate counterclockwise, thereby further enabling the first rotating roller device 51 and the second rotating roller device 52 to jointly drive the steel strip coil 1 to rotate counterclockwise. The hydraulic motor drives the rotary uncoiling trolley to finally complete the uncoiling process of the steel strip coil 1 by combining clockwise and counterclockwise rotation of the coil.

[0047] After the unwinding process is completed, the motor M1 stops running, and the electromagnetic terminals DT1 of the electromagnetic overflow valve 60 and DT2 and DT3 of the electromagnetic reversing valve 70 are de-energized. At this time, the electromagnetic terminals DT4 and DT5 of the first electromagnetic ball valve 110 and the second electromagnetic ball valve 120 are de-energized, thereby realizing the passive rotation of the first rotating roller device 51 and the second rotating roller device 52 driven by the steel strip roll 1. During this process, the B port of the first hydraulic motor 412 is connected to the A port through the e port of the first electromagnetic ball valve 110, and the B' port of the second hydraulic motor 422 is connected to the A' port through the f port of the second electromagnetic ball valve 120.

[0048] In some embodiments, the vehicle body 2 is further provided with a traveling wheel 3 and a traveling track 7. The traveling wheel 3 is disposed at the bottom of the vehicle body 2 and is adapted to the traveling track 7. The vehicle body is further provided with a vehicle body traveling drive mechanism 8, which is disposed on one side of the vehicle body 2 and is connected to the traveling wheel 3 in a transmission manner.

[0049] In some embodiments, the vehicle body 2 is also equipped with a crash roller 9 and a decoupling cone device 10. The vehicle body 2 can move along the travel track 7 toward the decoupling cone device 10. The vehicle body 2 is also equipped with a shovel head swing cylinder 11, a shovel head device 12 and a linkage mechanism 13. The shovel head swing cylinder 11 is connected to the shovel head device 12 through the linkage mechanism 13.

[0050] In practice, the anti-collision roller 9 is also installed above the trolley body 2 and placed on one side of the hydraulic motor drive system (opposite to the conveying direction of the steel strip roll 1) to prevent the rotating steel strip roll 1 from slipping. The traveling wheel 3 and the trolley body traveling drive mechanism 8 are also installed on the trolley body 2. The traveling wheel 3 is installed below the trolley body 2, and the trolley body traveling drive mechanism 8 is installed on the side of the trolley body 2. They are connected by a coupling to form a motor reducer drive system. At the same time, the entire unwinding trolley together with the steel strip roll 1 is supported on the traveling track 7 by the traveling wheel 3, which can drive the entire unwinding trolley and the steel strip roll 1 to travel and brake together on the traveling track 7 when the motor is started and stopped.

[0051] Various specifications of steel strip coils 1 (production raw materials) are placed on the rotating roller device 5. Then, the vehicle body driving mechanism 8 is started to drive the trolley body 2 and the steel strip coil 1 to the uncoiling cone device 10. After the vertical axis of the steel strip coil 1 is aligned with the vertical axis of the uncoiling cone device 10, the vehicle body driving mechanism 8 is closed.

[0052] Then, through the action of the matching hydraulic system, the first drive mechanism 41 and the second drive mechanism 42 drive the first rotating roller device 51 and the second rotating roller device 52 to rotate the steel strip coil 1, so that the head of the steel strip coil 1 is located at... Figure 1The position of angle α shown is (usually between 65° and 85°, which can be adjusted according to specifications); then, the shovel head device 12 is rotated by the shovel head swing cylinder 11 to insert the shovel head device 12 into the gap between the plate head of the steel strip roll 1. The shovel head swing cylinder 11 and the shovel head device 12 are connected by a linkage mechanism 13; finally, the hydraulic motor drive mechanism 4 drives the rotating roller device 5 to rotate the steel strip roll 1 counterclockwise, so that the plate head of the steel strip roll 1 is separated from the material roll and passes under the shovel head device 12, completing the uncoiling process. The hydraulic motor driven rotary uncoiling trolley used in this solution has a total output torque of more than 2.5 times that of the original, and the problem of uncoiling difficulties caused by insufficient output torque will no longer occur.

[0053] In the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0056] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A hydraulic motor-driven rotary unwinding trolley, characterized in that, It includes a vehicle body (2), a hydraulic motor drive mechanism (4), a rotating roller device (5), and a transmission mechanism (6); The hydraulic motor drive mechanism (4), the rotating roller device (5) and the transmission mechanism (6) are all mounted on the vehicle body (2). The hydraulic motor drive mechanism (4) is located on both sides of the rotating roller device (5). The hydraulic motor drive mechanism (4) is connected to the rotating roller device (5) via the transmission mechanism (6).

2. The hydraulic motor-driven rotary unwinding trolley according to claim 1, characterized in that, The hydraulic motor drive mechanism (4) includes a first drive mechanism (41) and a second drive mechanism (42). The first drive mechanism (41) includes a first hydraulic motor mounting base (411) and a first hydraulic motor (412) disposed on the first hydraulic motor mounting base (411). The structure of the second drive mechanism (42) is the same as that of the first drive mechanism (41).

3. The hydraulic motor-driven rotary unwinding trolley according to claim 2, characterized in that, The rotating roller device (5) includes a first rotating roller device (51) and a second rotating roller device (52); The first rotating roller device (51) includes a first bearing seat (511), a second bearing seat (512), a first rotating roller (513), a second rotating roller (514), and a first roller shaft (515). The first bearing seat (511) and the second bearing seat (512) are disposed on both sides of the first roller shaft (515). The first rotating roller (513) and the second rotating roller (514) are coaxially mounted on the first roller shaft (515) at intervals. The structure of the second rotating roller device (52) is the same as that of the first rotating roller device (51). The first rotating roller device (51) and the second rotating roller device (52) are symmetrically arranged.

4. The hydraulic motor-driven rotary unwinding trolley according to claim 3, characterized in that, The transmission mechanism (6) includes a first transmission mechanism (61) and a second transmission mechanism (62); The first transmission mechanism (61) includes a first chain (611), a first small sprocket (612), a first transmission tensioning mechanism (613), and a first large sprocket (614); The first small sprocket (612) is coaxially mounted on the output end of the first drive mechanism (41), and the first large sprocket (614) is coaxially mounted on the first rotating roller device (51). The first small sprocket (612) and the first large sprocket (614) are connected by the first chain (611). The first transmission tensioning mechanism (613) is used to tension the first chain (611). The structure of the second transmission mechanism (62) is the same as that of the first transmission mechanism (61).

5. The hydraulic motor-driven rotary unwinding trolley according to claim 1, characterized in that, It also includes a traveling wheel (3) and a traveling track (7), wherein the traveling wheel (3) is disposed at the bottom of the vehicle body (2) and the traveling wheel (3) is adapted to the traveling track (7).

6. A hydraulic motor-driven rotary unwinding trolley according to claim 5, characterized in that, It also includes a vehicle body driving mechanism (8), which is located on one side of the vehicle body (2) and is connected to the driving wheel (3) in a transmission manner.

7. A hydraulic motor-driven rotary unwinding trolley according to claim 6, characterized in that, It also includes a decoupling cone device (10), and the vehicle body (2) is able to move along the travel track (7) toward the decoupling cone device (10).

8. A hydraulic motor-driven rotary unwinding trolley according to claim 1, characterized in that, It also includes a shovel head swing cylinder (11), a shovel head device (12), and a linkage mechanism (13); The shovel head swing cylinder (11) is connected to the shovel head device (12) through the linkage mechanism (13).

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