A driving system based on winch buffer mechanism

Abstract

The present application relates to the technical field of drive systems, and specifically to a drive system based on a winch buffer mechanism, which includes: a traction rope, which is used to connect to a load-bearing member; a first guide pulley, which is used to connect to the traction rope; a first drive assembly, which includes a traction cylinder and at least one pulley group, the pulley group includes a traction fixed pulley group and a traction pulley group, the traction fixed pulley group and the traction pulley group each include at least two pulleys, the traction cylinder is used to drive the traction pulley group to move toward or away from the traction fixed pulley group; an oil supply device, which includes an oil tank; a winch buffer mechanism, which includes a winch rope, a second drive assembly and a transmission member, the transmission member is connected to the winch rope, and the second drive assembly is used to drive the winch rope to pull the transmission member to move, thereby enabling the drive system to achieve high-speed acceleration of a large mass load while avoiding a large impact on the drive system caused by buffer braking.

Description

Technical Field

[0001] The present application relates to the technical field of drive systems, and in particular to a drive system based on a winch buffer mechanism. Background Art

[0002] Most existing hydraulically driven drive systems use hydraulic motors as actuators, that is, the hydraulic motor drives the drum to rotate, directly pulling the wire rope and the accelerated object to accelerate.

[0003] However, such a drive system is limited by the speed of the hydraulic motor and the diameter of the drum, and cannot achieve acceleration of large mass loads. It can generally only be used to accelerate objects such as small drones, and its scope of use is greatly restricted. On the other hand, after the acceleration is completed, the motor is suddenly reversed for buffering. This buffering method will have a greater impact on the drive system and affect the service life of the drive system. Summary of the Invention

[0004] The present application provides a drive system based on a winch buffer mechanism to solve the problem that the existing hydraulic drive system is difficult to achieve large mass load acceleration and has a large impact on the drive during buffering.

[0005] In order to solve the above problems, this application adopts the following technical solutions:

[0006] The present application provides a drive system based on a winch buffer mechanism, which is used to drive a bearing member carrying an accelerated object to move back and forth along a guide rail, comprising:

[0007] a traction rope, which is used to be connected to the load-bearing member;

[0008] a plurality of first guide pulleys, which are used to be connected to the traction rope to adjust the extension direction of the traction rope;

[0009] a first drive assembly comprising a traction oil cylinder and at least one pulley block, wherein the pulley block comprises a traction fixed pulley block and a traction pulley block, each of the traction fixed pulley block and the traction pulley block comprising at least two pulleys, the traction oil cylinder being used to drive the traction pulley block to move toward or away from the traction fixed pulley block, and the traction rope alternately passing around the pulleys of the traction fixed pulley block and the traction pulley block;

[0010] an oil supply device, comprising an oil tank, the oil tank being connected to the traction cylinder to supply hydraulic oil to the traction cylinder;

[0011] a hoisting buffer mechanism comprising a hoisting rope, a second drive assembly, and a transmission member, wherein the transmission member is connected to the hoisting rope so as to reciprocate along the guide rail under the pull of the hoisting rope, the second drive assembly being used to drive the hoisting rope to pull the transmission member to move, and the second drive assembly being further used to adjust the resistance of the transmission member to the movement of the hoisting rope;

[0012] Wherein, when the traction rope pulls the supporting member to move to a specified position in a first direction, as the supporting member moves in the first direction, the transmission member is also used to push the supporting member to move in a second direction opposite to the first direction under the pulling of the hoisting rope.

[0013] In some possible designs, the hoisting buffer mechanism further includes a plurality of second guide pulleys to guide the extension direction of the hoisting rope through the second guide pulleys;

[0014] The second drive assembly includes a drum shaft, a first drum, a second drum, a reset motor, a clutch and at least one brake member. The first drum and the second drum are both connected to the drum shaft. One end of the hoisting rope is wound around the first drum, and the other end is wound around the second guide pulley, and the winding directions of the hoisting rope on the first drum and the second drum are opposite. The reset motor is connected to the drum shaft through the clutch. The reset motor is also connected to the oil tank. The brake member is connected to the drum shaft to adjust the resistance of the drum shaft to rotate under the traction of the transmission member.

[0015] In some possible designs, the braking component includes a brake disc and a brake, the brake disc is fixedly connected to the reel shaft, the brake includes two brake blocks and a driving cylinder, the two brake blocks are arranged on both sides of the brake disc, and the driving cylinder is used to drive the brake blocks to clamp or release the brake disc to adjust the resistance to the rotation of the reel shaft.

[0016] In some possible designs, the oil supply device also includes at least one first accumulator, a first reversing valve and an electric proportional pressure reducing valve, the reset motor is connected to the first reversing valve, the driving cylinder is connected to the electric proportional pressure reducing valve, the oil tank is connected to the first accumulator and the electric proportional pressure reducing valve, and the first accumulator is also connected to the electric proportional pressure reducing valve and the first reversing valve.

[0017] In some possible designs, there are two pulley blocks, which are respectively arranged on both sides of the traction cylinder. One end of the traction rope is connected to the supporting member, and the other end is connected to the supporting member after passing through the two pulley blocks.

[0018] In some possible designs, the first drive assembly further includes two damping cylinders and a damper, wherein the two damping cylinders are arranged in parallel on both sides of the damper and connected to the oil tank, and the damper includes a bracket and a balance wheel rotatably connected to the bracket;

[0019] The traction rope includes a first connecting section, a second connecting section and a third connecting section. One end of the first connecting section is connected to the supporting member, and the other end is connected to one of the pulley sets and then connected to one of the damping cylinders. One end of the third connecting section is connected to the supporting member, and the other end is connected to another of the damping cylinders after passing around another of the pulley sets. One end of the second connecting section is connected to one of the damping cylinders, and the other end is connected to another of the damping cylinders after passing around the balancing wheel.

[0020] In some possible designs, the damper further includes an adjusting mechanism and a screw, one end of the screw is connected to the bracket, and the adjusting mechanism is threadedly connected to the screw to drive the screw to drive the bracket to move back and forth in a direction close to or away from the adjusting mechanism.

[0021] In some possible designs, the oil supply device also includes a first one-way valve, a second accumulator, a second reversing valve and a first overflow valve, and a damping valve connected in sequence. The damping valve is connected to the second reversing valve and the first overflow valve. The damping valve and the first one-way valve are also connected to the damping cylinder so that the hydraulic oil in the second accumulator can enter the damping cylinder through the first one-way valve. The first overflow valve is connected to the oil tank.

[0022] In some possible designs, the oil supply device also includes at least one third accumulator, a launch main valve, a charging valve, a switch valve, a booster tank, an oil drain valve and at least one gas cylinder. The traction cylinder is connected to the charging valve and the launch main valve. The oil tank is connected to the oil drain valve, the launch main valve, the third accumulator and the switch valve. The launch main valve is also connected to the third accumulator. The top of the booster tank is connected to the gas cylinder, and the bottom of the booster tank is connected to the oil drain valve and the charging valve.

[0023] In some possible designs, the oil supply device also includes a liquid level sensor, which is used to detect the liquid level in the boost tank. The oil drain valve is in an open state when the liquid level sensor detects that the liquid level in the boost tank is higher than a preset liquid level, and the oil drain valve is in a closed state when the liquid level sensor detects that the liquid level in the boost tank is lower than or equal to the preset liquid level.

[0024] The drive system based on the winch buffer mechanism provided by the present application pulls the carrier by setting a traction rope, so that the carrier can drive the accelerated object to accelerate. During acceleration, the traction cylinder in the first drive component provides pulling force, and the piston rod of the traction cylinder only bears pulling force, so that the piston rod of the traction cylinder can be selected to have a small diameter and light weight structure, and the effective area of ​​the rod cavity of the traction cylinder is large, thereby realizing high-speed acceleration of large mass loads; at the same time, the winch buffer mechanism is used to perform buffering braking, which has less impact on the drive system, high reliability, and can effectively improve the performance of the drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0026] Figure 1 A schematic structural diagram of a drive system based on a winch buffer mechanism according to an embodiment of the present application;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the oil supply device;

[0028] Figure 3 for Figure 1 Schematic diagram of the connection structure between the damping oil cylinder and the oil supply device;

[0029] Figure 4 for Figure 1 Schematic diagram of the structure of the damper;

[0030] Figure 5 for Figure 1 Schematic diagram of the structure of the second drive component in.

[0031] Reference numerals:

[0032] 1-Traction rope, 2-Accelerated object, 3-Carrying member, 4-Traction movable pulley group, 5-Traction fixed pulley group, 6-Traction cylinder, 7-Damping cylinder, 702-Second accumulator, 703-First one-way valve, 704-Second reversing valve, 705-Damping valve, 706-First overflow valve, 8-Damper, 801-Bracket, 802-Balance wheel, 803-Adjustment mechanism, 804-Screw rod, 9-First guide pulley, 10-Second guide pulley, 11-Winching rope, 12-Transmission member, 13-Second drive assembly, 1301-Brake disc, 1302-Brake, 1303-first reel, 1304-rope guide, 1305-second reel, 1306-clutch, 1307-reset motor, 1308-reel shaft, 14-liquid level sensor, 15-boost tank, 16-gas cylinder, 17-switch valve, 18-drain valve, 19-second one-way valve, 20-motor, 21-oil pump, 22-second overflow valve, 23-oil tank, 24-third accumulator, 25-launching main valve, 26-charging valve, 27-first accumulator, 28-pressure reducing valve, 29-first reversing valve, 30-one-way throttle valve, 31-electric proportional pressure reducing valve.

[0033] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0035] Existing hydraulic drive systems used in hydraulic catapult systems often use a hydraulic motor as the actuator. This motor drives a drum that directly pulls the wire rope and trolley to achieve acceleration. However, this approach is limited by the motor's speed and drum diameter, making it incapable of achieving high-speed acceleration of large payloads. It is generally only suitable for accelerating small drones. Furthermore, after acceleration, this drive system requires a sudden reversal of the hydraulic motor to provide a buffer, which can significantly impact the drive system.

[0036] Among them, the combination of the cylinder and the double-speed pulley can achieve high-speed acceleration of large mass loads, but if the cylinder back cavity buffering method is used for deceleration buffering, it is easy to be limited by the effective area of ​​the back cavity or the strength of the piston rod, resulting in buffering failure. If the cylinder diameter or the piston rod diameter is increased, the volume and flow of the cylinder will increase.

[0037] At present, some people use external buffers in combination with oil cylinders and speed pulleys to avoid the problem of buffer failure. However, the traditional external buffer method has poor adjustability, and the buffering process will still cause a large impact on the drive system.

[0038] In order to avoid the above problems, the present application provides a drive system based on a winch buffer mechanism, which can achieve high-speed acceleration of large mass loads while also performing effective buffering braking through the winch buffer mechanism and greatly reducing the impact on the drive system.

[0039] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0040] See Figure 1 As shown, this embodiment provides a driving system based on a winch buffer mechanism, which is used to drive the carrier 3 to move back and forth along the guide rail, wherein the carrier 3 is used to carry the accelerated object 2, which can be a common component such as a trolley or a pulley. As long as it can be used to carry the accelerated object 2 and can automatically release the limit on the accelerated object 2 after the acceleration is completed, this embodiment does not limit it here, and the guide rail is a pre-set acceleration track, generally a linear guide rail, which is well known to those skilled in the art and will not be described in detail in this embodiment.

[0041] The driving system based on the winch buffer mechanism includes a first guide pulley, a traction rope 1, a first driving assembly, an oil supply device and a winch buffer mechanism.

[0042] The traction rope 1 is used to connect with the carrier 3 to pull the carrier 3 to move and accelerate the accelerated object 2. The first guide pulley is used to guide the traction rope 1 to limit the extension direction of the traction rope 1, that is, there are multiple first guide pulleys, which are arranged at different positions to guide the traction rope 1 so that it can pull the carrier 3 along the guide rail. The first drive assembly includes a traction cylinder 6 and a pulley block. The pulley block includes a traction fixed pulley block 5 and a traction pulley block 4. Each traction fixed pulley block 5 and traction pulley block 4 includes at least two pulleys. The traction cylinder 6 is used to drive the traction pulley block 4 to move toward or away from the traction fixed pulley block 5. The traction rope 1 alternately passes around the pulleys of the traction fixed pulley block 5 and the traction pulley block 4. Therefore, when the traction cylinder 6 drives the traction pulley block 4 to move, the length of the traction rope 1 between the pulley block and the carrier 3 changes accordingly. That is, the pulleys of the traction fixed pulley block 5 and the traction movable pulley block 4 are arranged in a one-to-one correspondence. The traction rope 1 first passes around a pulley of the traction fixed pulley block 5, then passes around a pulley in the traction movable pulley block 4, and then passes around another pulley in the traction movable pulley block 4. This process is repeated until it completely passes around all the pulleys of the traction fixed pulley block 5 and the traction movable pulley block 4. The oil supply device includes an oil tank 23, which provides hydraulic oil to the traction cylinder 6 through the oil tank 23, so that the traction cylinder 6 can drive the traction movable pulley block 4 to move. The hoisting buffer mechanism includes a hoisting rope 11, a second drive assembly 13 and a transmission member 12. The transmission member 12 is connected to the hoisting rope 11 to reciprocate along the guide rail under the pull of the hoisting rope 11. The second drive assembly 13 is used to drive the hoisting rope 11 to pull the transmission member 12 to move.

[0043] The transmission member 12 is used to push the bearing member 3 to move in a second direction Y opposite to the first direction under the pull of the hoisting rope 11 when the traction rope 1 pulls the bearing member 3 to move in a first direction X to a specified position.

[0044] For example, Figure 1 As shown, the position of the transmission member 12 is the designated position, which is the position where the support member 3 reaches after the acceleration is completed.

[0045] It is understandable that the transmission member 12 can be a common structure such as a hook, as long as it is fixed on the winch rope 11 so that it can move synchronously with the carrier 3 when they are in contact and move in the same direction, and separate themselves when they move in opposite directions. This embodiment does not limit it here.

[0046] Of course, the transmission member 12 also moves back and forth along the guide rail.

[0047] In addition, the number of pulley groups can be set according to needs, and the number of pulleys of the traction movable pulley group 4 and the traction fixed pulley group 5 can also be set according to needs, which is not limited in this embodiment.

[0048] For example, each traction fixed pulley block 5 and each traction movable pulley block 4 includes 6 pulleys, so the movement between the traction movable pulley block 4 and the traction fixed pulley block 5 will be amplified to the supporting member 3 by a factor of 12.

[0049] For example, two pulley groups are provided and are arranged on both sides of the traction cylinder 6. The traction rope 1 is wrapped around one pulley group and then around the other pulley group. The two traction pulley groups 4 are connected by a connecting frame, and the piston rod of the traction cylinder 6 is connected to the connecting frame, so that the two traction pulley groups 4 can be moved synchronously by only pushing the connecting frame to move.

[0050] It is understandable that when multiple pulley assemblies are provided, the traction rope 1 only needs to pass around all the pulley assemblies in sequence.

[0051] When the accelerated object 2 needs to be accelerated, the accelerated object 2 is carried by the carrier 3. When the accelerated object 2 is accelerated, the traction cylinder 6 is supplied with oil through the oil supply device, so that the traction pulley group 4 moves in the direction away from the traction fixed pulley group 5, so that the carrier 3 is pulled by the traction rope 1 and moves in the first direction X to accelerate the accelerated object 2. The acceleration condition can be adjusted by controlling the oil supply speed of the traction cylinder 6, so that the acceleration process is adjustable. When the carrier 3 moves to the specified position and contacts the transmission member 12, It will be blocked by the transmission member 12 and gradually slow down, causing the accelerated object 2 on the supporting member 3 to move rapidly in the X direction and fly out. Each moving part slows down to a stop, and then the second drive component 13 controls the hoisting rope 11 to pull the transmission member 12 to move in the second direction Y, so that the transmission member 12 pushes the supporting member 3 back to its original position. Subsequently, the second drive component 13 moves the transmission member 12 in the first direction X again, returns to the designated position, and waits for the next acceleration. In this way, while achieving high-speed acceleration of a large mass load, the impact generated by the buffering process is reduced, thereby playing a better protective role.

[0052] In addition, the rod chamber of the traction cylinder 6 is the working oil chamber, and the rodless chamber is connected to the atmosphere. The piston rod of the traction cylinder 6 only bears tension, so the piston rod can be selected with a small diameter and light weight, and the rod chamber has a large effective area and strong traction.

[0053] For some possible implementations, see Figure 1 and Figure 5 As shown, the hoisting buffer mechanism further includes a plurality of second guide pulleys to guide the extension direction of the hoisting rope 11. The drive assembly includes a drum shaft 1308, a first drum 1303, a second drum 1305, a reset motor 1307, a clutch 1306 and at least one brake member.

[0054] The first drum 1303 and the second drum 1305 are both connected to the drum shaft 1308, that is, when the drum shaft 1308 rotates, the first drum 1303 and the second drum 1305 rotate synchronously with the drum shaft 1308, one end of the hoisting rope 11 is wound around the first drum 1303, and the other end is wound around the second guide pulley and then wound around the second drum 1305, and the winding directions of the hoisting rope 11 on the first drum 1303 and the second drum 1305 are opposite, that is, when the drum shaft 1308 rotates, if the first drum 1303 winds the hoisting rope 11 around the first drum 1303, the second drum 1305 releases the hoisting rope 11 wound around the second drum 1305.

[0055] It is understandable that the diameters of the first drum 1303 and the second drum 1305 are the same, so that when the drum shaft 1308 rotates, the first drum 1303 and the second drum 1305 can reel in the rope and release the rope simultaneously.

[0056] The reset motor 1307 is connected to the spool shaft 1308 via a clutch 1306. The clutch 1306 is a conventional device. When the clutch 1306 is engaged, the power of the reset motor 1307 is transmitted to the spool shaft 1308. When the clutch 1306 is disengaged, the power transmission from the reset motor 1307 to the spool shaft 1308 is stopped. Thus, the clutch 1306 controls the power transmission between the reset motor 1307 and the spool shaft 1308. In addition, the reset motor 1307 is also connected to the oil tank 23, through which hydraulic oil is supplied to the reset motor 1307.

[0057] The brake member is connected to the reel shaft 1308 and is used to adjust the resistance of the reel shaft 1308 to rotation when the transmission member 12 moves toward the first direction X under the push of the carrier 3, thereby changing the resistance of the carrier 3 pushing the transmission member 12 to move for buffering braking.

[0058] Such a setting method, when in use, can not only prevent the hoisting rope 11 from loosening, but also can buffer and decelerate through the brake part after the supporting part 3 reaches the specified position, so that each moving part gradually slows down to stop moving, and then the reset motor 1307 resets the supporting part 3 and the transmission part 12, effectively achieving the effect of buffering and braking.

[0059] It is understandable that the traction rope 1 and the hoisting rope 11 can be steel wires or other rope-like objects, as long as they can bear the tension generated during the acceleration and buffering process of the accelerated object 2. This embodiment does not limit them here.

[0060] Furthermore, the second driving assembly 13 also includes a rope guide 1304 , and each of the first drum 1303 and the second drum 1305 is provided with a rope guide 1304 so that the hoisting rope 11 is evenly arranged when it is received on the first drum 1303 and the second drum 1305 .

[0061] In some possible embodiments, the braking component includes a brake disc 1301 and a brake 1302, the brake disc 1301 is fixedly connected to the reel shaft 1308, the brake 1302 includes two brake blocks arranged on both sides of the brake disc 1301, and a driving cylinder for driving the brake blocks to move, and the driving cylinder is connected to the oil tank 23.

[0062] Specifically, the brake disc 1301 can be a metal disc, and the brake 1302 can use the caliper assembly of a common disc brake, such as a floating caliper and a fixed caliper, and the installation and connection method of the brake block and the driving cylinder can be adaptively adjusted according to the specific type selected by the brake 1302. This is well known to those skilled in the art and will not be described in detail in this embodiment.

[0063] During use, when the carrier 3 contacts the transmission member 12 and pushes the transmission member 12 in the first direction X, the oil tank 23 supplies oil to the drive cylinder, causing the brake block to move toward the brake disc 1301 and gradually clamp the brake disc 1301, gradually increasing the rotational resistance of the spool shaft 1308. This gradually slows down the moving components of the drive system until they stop. Once the drive cylinder drives the brake block back and separates from the brake disc 1301, the rotational resistance of the spool shaft 1308 disappears.

[0064] It is understandable that the braking member can be provided as one or more, as long as it can effectively perform braking, and this embodiment does not limit it.

[0065] Exemplarily, there are two brake parts, and the two brake parts are respectively arranged at both ends of the reel shaft 1308. The middle part of the brake disc 1301 is fixedly connected to the reel shaft 1308. The brake 1302 is located on one side of the reel shaft 1308 and is supported by a special mounting frame.

[0066] In some possible embodiments, the oil supply device also includes at least one first accumulator 27, a first reversing valve 29 and an electric proportional pressure reducing valve 31, the reset motor 1307 is connected to the first reversing valve 29, the driving cylinder is connected to the electric proportional pressure reducing valve 31, the oil tank 23 is connected to the first accumulator 27 and the electric proportional pressure reducing valve 31, and the first accumulator 27 is also connected to the electric proportional pressure reducing valve 31 and the first reversing valve 29.

[0067] Specifically, the first reversing valve 29 has an oil inlet, an oil return port and two convertible oil outlets. The oil inlet is connected to the oil tank 23 and the first accumulator 27, the oil return port is also connected to the oil tank 23, and both oil outlets are connected to the reset motor 1307.

[0068] Of course, a pressure reducing valve 28 can be added at the oil inlet to maintain a stable pressure upstream of the first reversing valve 29, thereby ensuring a relatively stable flow rate. Furthermore, a one-way throttle valve 30 can be added between each of the two oil outlets and the reset motor 1307 to adjust the speed of the reset motor 1307.

[0069] Specifically, when the reset motor 1307 is working, the hydraulic oil in the oil tank 23 enters the reset motor 1307 through the first reversing valve 29. One oil outlet of the first reversing valve 29 sends the hydraulic oil into the reset motor 1307, and the other oil outlet is used to return the oil, so that the reset motor 1307 rotates in the required direction. When the rotation direction of the reset motor 1307 needs to be changed, it is only necessary to change the direction through the first reversing valve 29, and the first accumulator 27 is used to ensure that the minimum pressure meets the requirements. Of course, one or more first accumulators 27 can be set, and the specific minimum pressure requirement shall be met. This embodiment does not limit it here.

[0070] In addition, the electric proportional pressure reducing valve 31 can adjust the oil inlet pressure of the driving cylinder, thereby adjusting the braking force of the brake 1302 to perform buffer braking on the carrier 3, making braking simpler.

[0071] In some possible implementations, two pulley blocks are provided and are respectively arranged on both sides of the traction cylinder 6 . One end of the traction rope 1 is connected to the bearing member 3 , and the other end is connected to the bearing member 3 after passing through the two pulley blocks.

[0072] For example, the overall direction of the traction rope 1 is similar to a double-layer L-shape, and the four first guide pulleys and the pulley group guide the direction of the traction rope 1, so that two parts of the supporting member 3 are connected to the traction rope 1, thereby improving the traction effect of the traction rope 1 on the supporting member 3.

[0073] For some possible implementations, see Figure 1 、 Figure 3 and Figure 4 As shown, the first drive assembly also includes two damping cylinders 7 and a damper 8. The two damping cylinders 7 are arranged in parallel on both sides of the damper 8, and the damping cylinders 7 are connected to the oil tank 23. The damper 8 includes a bracket 801 and a balance wheel 802 rotatably connected to the bracket 801.

[0074] The traction rope 1 includes a first connecting section, a second connecting section and a third connecting section. One end of the first connecting section is connected to the supporting member 3, and the other end is connected to a pulley set and then connected to a damping cylinder 7. One end of the third connecting section is connected to the supporting member 3, and the other end is connected to another damping cylinder 7 after passing around another pulley set. One end of the second connecting section is connected to a damping cylinder 7, and the other end is connected to another damping cylinder 7 after passing around the balance wheel 802.

[0075] Specifically, when the accelerated object 2 is accelerated, the traction cylinder 6 will cause the tension of the traction rope 1 to suddenly increase, and the damping cylinder 7 can withstand the corresponding tension through mechanical limiting, ensuring that it can provide sufficient support for the load of the traction rope 1 and prevent the traction rope 1 from breaking due to excessive instantaneous load. At the same time, it can also ensure that the traction rope 1 will not loosen and fall off.

[0076] During use, the balance wheel 802 can rotate as the second connecting section moves, so that the balance wheel 802 can balance the tension at both ends of the traction rope 1, preventing the traction rope 1 from breaking due to uneven force at both ends, and providing better protection for the traction rope 1.

[0077] In some possible embodiments, the damper 8 further includes an adjusting mechanism 803 and a screw rod 804 , one end of the screw rod 804 is connected to the bracket 801 , and the adjusting mechanism 803 is connected to the screw rod 804 to drive the screw rod 804 to move back and forth along the extension direction of the damping cylinder 7 .

[0078] Specifically, after long-term use, the traction rope 1 is prone to plastic elongation due to force, resulting in excessive initial retraction stroke of the damping cylinder 7, initial position offset of the support component 3 and other problems. At this time, the adjustment mechanism 803 can be used to drive the screw rod 804 to move in the first direction X to compensate for the plastic elongation of the traction rope 1.

[0079] It is understandable that the adjustment mechanism 803 may include a gear and a motor, or a gear and a handwheel, the gear is engaged with the screw rod 804, and the gear is driven to rotate by the motor or handwheel, thereby driving the screw rod 804 to drive the balance wheel 802 to move back and forth in the direction of approaching or moving away from the damping cylinder 7.

[0080] In some possible embodiments, the oil supply device also includes a first one-way valve 703, a second accumulator 702, a second reversing valve 704 and a first overflow valve 706, and a damping valve 705 connected in sequence. The damping valve 705 is connected to the second reversing valve 704 and the first overflow valve 706. The damping valve 705 and the first one-way valve 703 are also connected to the damping cylinder 7 so that the hydraulic oil in the second accumulator 702 can enter the damping cylinder 7 through the first one-way valve 703. The first overflow valve 706 is connected to the oil tank 23. It can be understood that the various components are connected through pipelines for conveying hydraulic oil.

[0081] Specifically, the damping cylinder 7 has a rod chamber and a rodless chamber like a conventional cylinder. The second connecting section can be connected to the piston rod of the damping cylinder 7, or it can be connected to the end of the damping cylinder 7 away from the piston rod, while the first connecting section and the third connecting section can be connected to the other end of the damping cylinder 7 accordingly.

[0082] For example, the second connecting section is connected to the ends of the rodless chambers of the two damping cylinders 7 , and the first connecting section and the third connecting section are connected to the piston rods of the two damping cylinders 7 , respectively.

[0083] At this time, the first one-way valve 703 and the damping valve 705 are both connected to the rod chamber of the damping cylinder 7. When acceleration begins, the traction cylinder 6 is loaded, causing the tension of the traction rope 1 to suddenly increase. The damping cylinder 7 is passively extended under the pull of the traction rope 1, and the hydraulic oil in the rod chamber flows back to the second accumulator 702 through the damping valve 705 and the second reversing valve 704. Among them, the damping valve 705 can increase the pressure in the rod chamber when the damping cylinder 7 is passively extended, ensuring that it can provide sufficient support for the load of the traction rope 1, and prevent the traction rope 1 from breaking due to excessive instantaneous load.

[0084] After the accelerated object 2 is accelerated to a predetermined speed, the traction cylinder 6 is unloaded, causing the tension of the traction rope 1 to suddenly decrease. The hydraulic oil in the second accumulator 702 quickly enters the rod chamber of the damping cylinder 7 through the first one-way valve 703, causing the piston rod to retract quickly, thereby ensuring that the traction rope 1 will not loosen or fall off.

[0085] In addition, after all moving parts slow down to a stop, the traction rope 1 restores its tension, and the piston rod of the damping cylinder 7 further retracts to the middle position. During the entire acceleration process, the hydraulic oil will generate a large amount of heat after flowing into the second accumulator 702 through the damping valve 705, causing the temperature of the hydraulic oil to rise. At this time, the electromagnet of the second reversing valve 704 is controlled to be energized, so that the hydraulic oil in the second accumulator 702 flows back to the oil tank 23 through the second reversing valve 704. After the hot oil is drained, the electromagnet of the second reversing valve 704 is controlled to be de-energized. The hydraulic oil in the oil tank 23 passes through the first overflow valve 706 and the second reversing valve 704 to charge the second accumulator 702, and then returns to its initial state, waiting for the next acceleration.

[0086] In some possible embodiments, the oil supply device also includes at least one third accumulator 24, a launch main valve 25, a charging valve 26, a switching valve 17, a boost tank 15, an oil drain valve 18 and at least one gas cylinder 16. The traction cylinder 6 is connected to the charging valve 26 and the launch main valve 25. The oil tank 23 is connected to the oil drain valve 18, the launch main valve 25, the third accumulator 24, and the switching valve 17. The launch main valve 25 is also connected to the third accumulator 24. The top of the boost tank 15 is connected to the gas cylinder 16, and the bottom of the boost tank 15 is connected to the oil drain valve 18 and the charging valve 26. It can be understood that the various components are connected through pipelines for conveying hydraulic oil.

[0087] Among them, the filling valve 26 is installed at the bottom of the boost tank 15, which can achieve the maximum oil replenishment capacity through the boost tank 15, and the gas cylinder 16 is connected to the top of the boost tank 15, which can effectively replenish the pressure of the boost tank 15 and ensure that the minimum pressure of the boost tank 15 can meet the requirements after the hydraulic oil is replenished to the outside. Among them, the pressure of the boost tank 15 is generally maintained at 3-5 bar.

[0088] It can be understood that when multiple gas cylinders 16 are set, each gas cylinder 16 is connected to the boost tank 15 through a pipeline, and the number of gas cylinders 16 can be set according to actual usage requirements, as long as the usage requirements of the boost tank 15 can be met. This embodiment will not be described in detail here.

[0089] It is understandable that multiple third accumulators 24 can also be provided to meet the acceleration requirements of the accelerated object 2. Of course, when multiple third accumulators 24 are provided, each third accumulator 24 is connected to the launch main valve 25 and the oil tank 23 through a pipeline. This embodiment does not limit the setting of the third accumulator 24.

[0090] Of course, the structures and working principles of the first accumulator 27 , the second accumulator 702 and the third accumulator 24 are well known to those skilled in the art, and will not be described in detail in this embodiment.

[0091] In addition, the oil drain valve 18 and the launch main valve 25 can both adopt at least one high-response two-way plug-in electro-hydraulic proportional throttle valve to achieve efficient adjustment of acceleration, and multiple two-way plug-in electro-hydraulic proportional throttle valves can be set in parallel to meet the regulation of large flow hydraulic oil, and the specific number can be adjusted according to actual conditions.

[0092] Furthermore, a liquid level sensor 14 can be provided to monitor the liquid level in the boost tank 15 in real time through the liquid level sensor 14, and to control the opening and closing of the drain valve 18 through the liquid level sensor 14, that is, when the liquid level sensor 14 detects that the liquid level in the boost tank 15 is lower than or equal to the preset liquid level, the drain valve 18 is in a closed state; when the liquid level sensor 14 detects that the liquid level in the boost tank 15 is higher than the preset liquid level, the drain valve 18 is in an open state to discharge excess hydraulic oil to the tank 23.

[0093] In addition, in order to ensure the oil supply pressure of the traction cylinder 6, the reset motor 1307, the driving cylinder, etc., taking the traction cylinder 6 as an example, a pump group consisting of a motor 20, an oil pump 21, a second one-way valve 19, and a second overflow valve 22 can be set on the connecting pipeline between the oil outlet end of the oil tank 23 and the switch valve 17, the launch main valve 25, and the third accumulator 24, that is, the oil inlet of the third accumulator 24, the switch valve 17, and the launch main valve 25 are connected through a pipeline, and the pipeline is connected to the second one-way valve 19, so that the hydraulic oil in the oil tank 23 can only enter the switch valve 17, the launch main valve 25, and the third accumulator 24 through the second one-way valve 19 under the action of the oil pump 21.

[0094] It can be understood that when multiple pump groups are provided, the multiple pump groups are provided in parallel between the oil tank 23 and the pipeline connecting the oil inlet of the third accumulator 24, the switch valve 17, and the launch main valve 25, and for each pump group, the second overflow valve 22 and the oil pump 21 are provided in parallel between the second one-way valve 19 and the oil tank 23, so that the drive system's requirements for the hydraulic oil flow can be met in this way.

[0095] Among them, the reset motor 1307, the driving cylinder, etc. are also arranged in the same way, that is, the oil inlet of the first accumulator 27 and the first reversing valve 29 are connected through a pipeline, and a pump group is arranged on the pipeline in the same way.

[0096] In addition, the specific number of pump groups is determined according to actual conditions, and this embodiment will not elaborate on it here. The oil tank 23 can be set as one or more. The reset motor 1307, traction cylinder 6, drive cylinder, and damping cylinder 7 can use the same oil tank 23 or different oil tanks 23. This embodiment does not limit it here.

[0097] For ease of understanding, the working principle of the drive system based on the winch buffer mechanism provided in this embodiment is further described below with reference to the accompanying drawings:

[0098] In the initial state, such as Figure 1 and Figure 5As shown, the clutch 1306 is in a disengaged state, and the accelerated object 2 is mounted on the carrier 3, causing the traction cylinder 6 to supply oil to generate a pulling force, causing the traction pulley set 4 to move in the second direction Y. At this time, the distance between the traction fixed pulley set 5 and the traction pulley set 4 increases, and the traction rope 1 is retracted at a multiple distance, thereby pulling the carrier 3 to accelerate along the guide rail toward the first direction X.

[0099] When the accelerated object 2 is accelerated to the predetermined position, the traction cylinder 6 is unloaded. Due to the inertia of each moving part, the traction pulley group 4 and the piston rod of the traction cylinder 6 still move in the second direction Y. At this time, the bottom of the carrier 3 is connected to the transmission member 12, driving the transmission member 12 to move in the second direction Y. The transmission member 12 drives the brake disc 1301, the first drum 1303, the second drum 1305 and the drum shaft 1308 to rotate through the hoisting rope 11. Among them, the first drum 1303 is in the rope-releasing state, and the second drum 1305 is in the rope-reeling state. In this state, the brake 1302 is loaded and gradually clamps the brake disc 1301. The friction between the brake block and the brake disc 1301 gradually slows down the rotation speed of the brake disc 1301, the first drum 1303, and the second drum 1305, so that the moving parts such as the supporting member 3, the traction pulley group 4, and the piston rod of the traction cylinder 6 are gradually decelerated, so that the connection between the accelerated object 2 and the supporting member 3 is automatically disconnected, and the accelerated object 2 continues to move rapidly in the first direction X and flies out, while the moving parts of the drive system continue to decelerate until they stop.

[0100] After each moving part continues to decelerate until it stops, the drive system is reset. At this time, the clutch 1306 is engaged, and the reset motor 1307 rotates to drive the brake disc 1301, the first drum 1303, and the second drum 1305 to rotate, wherein the first drum 1303 is in the rope-reeling state, and the second drum 1305 is in the rope-releasing state. The transmission member 12 drives the supporting member 3 to move in the second direction Y, and further drives the traction pulley group 4 and the piston rod of the traction cylinder 6 to move in the second direction Y, wherein the traction cylinder 6 is passively extended. Until the traction cylinder 6 is fully extended, the reset motor 1307 rotates in the opposite direction to make the transmission member 12 move in the first direction X. After the transmission member 12 returns to the specified position, the reset motor 1307 stops rotating and disengages the clutch 1306, thereby restoring the drive system to its initial state and preparing for the next acceleration.

[0101] During use, the working principle of the oil supply device is as follows:

[0102] like Figure 2As shown, before acceleration, each pump group is started to charge the first accumulator 27 and the third accumulator 24. At this time, the oil discharge valve 18 is in the left position and is fully closed. The switch valve 17 is in the right position so that the control oil port of the filling valve 26 is connected to the oil tank 23. The filling valve 26 is not actively opened. The launch main valve 25 is in the left position and is fully closed. The first reversing valve 29 is in the middle position. The pressure of the electric proportional pressure reducing valve 31 is set to 0.

[0103] When the accelerated object 2 begins to accelerate, the launch main valve 25 opens, and the high-pressure hydraulic oil in the pump group and the third accumulator 24 enters the traction cylinder 6 through the launch main valve 25, generating a pulling force, causing the accelerated object 2 to start accelerating toward the first direction X.

[0104] When the accelerated object 2 is accelerated to a predetermined speed, the main launch valve 25 is closed, the pulling force applied by the traction cylinder 6 to the traction pulley group 4 disappears, and the hydraulic oil in the booster tank 15 enters the traction cylinder 6 through the filling valve 26 to replenish oil to prevent air absorption. The electric proportional pressure reducing valve 31 controls the oil inlet pressure of the brake 1302 to gradually increase, and the braking force of the brake 1302 will also increase accordingly, so that the moving parts gradually slow down until they stop.

[0105] When resetting the drive system, the switch valve 17 is in the left position, so that the filling valve 26 is actively opened, the main launch valve 25 is in the left position and is fully closed, the pressure of the electric proportional pressure reducing valve 31 is set to 0, the clutch 1306 is engaged, the first reversing valve 29 is in the left position, and the high-pressure oil in the pump group and the first accumulator 27 enters the reset motor 1307 through the pressure reducing valve 28, the first reversing valve 29 and the one-way throttle valve 30. The reset motor 1307 rotates, driving the traction cylinder 6 to extend, and the hydraulic oil in the traction cylinder 6 is discharged through the filling valve 2 6 flows into the boost tank 15. When the liquid level in the boost tank 15 detected by the liquid level sensor 14 is lower than or equal to the preset liquid level, the drain valve 18 is in the closed state. When the liquid level is higher than the preset liquid level, the drain valve 18 opens to discharge the excess oil into the tank 23. After the traction cylinder 6 is fully extended, the first reversing valve 29 is in the right position, the reset motor 1307 rotates in the opposite direction, and after the transmission member 12 reaches the specified position, the reversing valve is in the middle position, the clutch 1306 is disengaged, and the drive system returns to the initial state, ready for the next acceleration.

[0106] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0107] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A driving system based on a winch buffer mechanism, for driving a bearing member (3) carrying an accelerated object (2) to move back and forth along a guide rail, characterized in that: include: A traction rope (1) for connecting to the carrier (3); a plurality of first guide pulleys, which are used to be connected to the traction rope (1) to adjust the extension direction of the traction rope (1); A first driving assembly comprises a traction oil cylinder (6) and at least one pulley block, wherein the pulley block comprises a traction fixed pulley block (5) and a traction movable pulley block (4), wherein each of the traction fixed pulley block (5) and the traction movable pulley block (4) comprises at least two pulleys, and the traction oil cylinder (6) is used to drive the traction movable pulley block (4) to move toward or away from the traction fixed pulley block (5), and the traction rope (1) alternately passes around the pulleys of the traction fixed pulley block (5) and the traction movable pulley block (4); An oil supply device, comprising an oil tank (23), wherein the oil tank (23) is connected to the traction oil cylinder (6) to provide hydraulic oil to the traction oil cylinder (6); A hoisting buffer mechanism, comprising a hoisting rope (11), a second drive assembly (13) and a transmission member (12), wherein the transmission member (12) is connected to the hoisting rope (11) so as to reciprocate along the guide rail under the pull of the hoisting rope (11), the second drive assembly (13) is used to drive the hoisting rope (11) to pull the transmission member (12) to move, and the second drive assembly (13) is also used to adjust the resistance of the transmission member (12) to the movement of the hoisting rope (11); The transmission member (12) is used for, when the traction rope (1) pulls the bearing member (3) to move in a first direction to a specified position, as the bearing member (3) moves in the first direction, the transmission member (12) is also used for, under the pull of the hoisting rope (11), pushing the bearing member (3) to move in a second direction opposite to the first direction; The hoisting buffer mechanism further includes a plurality of second guide pulleys for guiding the extension direction of the hoisting rope (11) through the second guide pulleys; The second driving assembly (13) comprises a drum shaft (1308), a first drum (1303), a second drum (1305), a reset motor (1307), a clutch (1306) and at least one brake member. The first drum (1303) and the second drum (1305) are both connected to the drum shaft (1308). One end of the hoisting rope (11) is wound around the first drum (1303), and the other end is wound around the second guide pulley and then wound around the second drum (130 5), and the winding directions of the hoisting rope (11) on the first drum (1303) and the second drum (1305) are opposite, the reset motor (1307) is connected to the drum shaft (1308) through the clutch (1306), the reset motor (1307) is also connected to the oil tank (23), and the brake member is connected to the drum shaft (1308) to adjust the resistance of the drum shaft (1308) to rotate under the traction of the transmission member (12); The braking component includes a brake disc (1301) and a brake (1302), wherein the brake disc (1301) is fixedly connected to the reel shaft (1308), and the brake (1302) includes two brake blocks and a driving cylinder, wherein the two brake blocks are respectively arranged on both sides of the brake disc (1301), and the driving cylinder is used to drive the brake blocks to clamp or release the brake disc (1301) so as to adjust the resistance to the rotation of the reel shaft (1308).

2. The drive system based on the winch buffer mechanism according to claim 1, characterized in that: The oil supply device further comprises at least one first accumulator (27), a first reversing valve (29) and an electric proportional pressure reducing valve (31); the reset motor (1307) is connected to the first reversing valve (29); the driving oil cylinder is connected to the electric proportional pressure reducing valve (31); the oil tank (23) is connected to the first accumulator (27) and the electric proportional pressure reducing valve (31); and the first accumulator (27) is also connected to the electric proportional pressure reducing valve (31) and the first reversing valve (29).

3. The driving system based on the winch buffer mechanism according to claim 1, characterized in that: There are two pulley blocks, which are respectively arranged on both sides of the traction oil cylinder (6); one end of the traction rope (1) is connected to the bearing member (3), and the other end is connected to the bearing member (3) after passing through the two pulley blocks.

4. The driving system based on the winch buffer mechanism according to claim 3 is characterized in that: The first drive assembly further comprises two damping oil cylinders (7) and a damper (8), wherein the two damping oil cylinders (7) are arranged in parallel on both sides of the damper (8), and the damping oil cylinders (7) are connected to the oil tank (23); and the damper (8) comprises a bracket (801) and a balancing wheel (802) rotatably connected to the bracket (801); The traction rope (1) includes a first connecting section, a second connecting section and a third connecting section. One end of the first connecting section is connected to the bearing member (3), and the other end is connected to one of the pulley blocks and then connected to one of the damping cylinders (7). One end of the third connecting section is connected to the bearing member (3), and the other end is connected to another of the pulley blocks and then connected to another of the damping cylinders (7). One end of the second connecting section is connected to one of the damping cylinders (7), and the other end is connected to another of the damping cylinders (7) after passing through the balancing wheel (802).

5. The driving system based on the winch buffer mechanism according to claim 4, characterized in that: The damper (8) further comprises an adjusting mechanism (803) and a screw rod (804), one end of the screw rod (804) being connected to the bracket (801), and the adjusting mechanism (803) being threadedly connected to the screw rod (804) so ​​as to drive the screw rod (804) to push the bracket (801) to move toward or away from the adjusting mechanism (803).

6. The driving system based on the winch buffer mechanism according to claim 4, characterized in that: The oil supply device further comprises a first one-way valve (703), a second accumulator (702), a second reversing valve (704) and a first overflow valve (706), which are connected in sequence, and a damping valve (705). The damping valve (705) is connected to the second reversing valve (704) and the first overflow valve (706). The damping valve (705) and the first one-way valve (703) are also connected to the damping oil cylinder (7) so that the hydraulic oil in the second accumulator (702) can enter the damping oil cylinder (7) through the first one-way valve (703). The first overflow valve (706) is connected to the oil tank (23).

7. The driving system based on the winch buffer mechanism according to any one of claims 1 to 6, characterized in that: The oil supply device further comprises at least one third accumulator (24), a launch main valve (25), a charging valve (26), a switch valve (17), a pressurized oil tank (15), an oil discharge valve (18) and at least one gas cylinder (16); the traction oil cylinder (6) is connected to the charging valve (26) and the launch main valve (25); the oil tank (23) is connected to the oil discharge valve (18), the launch main valve (25), the third accumulator (24) and the switch valve (17); the launch main valve (25) is also connected to the third accumulator (24); the top of the pressurized oil tank (15) is connected to the gas cylinder (16); and the bottom of the pressurized oil tank (15) is connected to the oil discharge valve (18) and the charging valve (26).

8. The driving system based on the winch buffer mechanism according to claim 7, characterized in that: The oil supply device further comprises a liquid level sensor (14), the liquid level sensor (14) being used to detect the liquid level in the boosting oil tank (15), the oil drain valve (18) being in an open state when the liquid level sensor (14) detects that the liquid level in the boosting oil tank (15) is higher than a preset liquid level, and the oil drain valve (18) being in a closed state when the liquid level sensor (14) detects that the liquid level in the boosting oil tank (15) is lower than or equal to the preset liquid level.

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