阅读说明：本技术 卷缆缓冲装置 (Coil cable buffer device ) 是由 丁永成 刘文武 张强 乔彦华 石晓光 陈庆贺 谢戈辉 车利明 黄振华 慕伟 杜佳 于 2020-12-04 设计创作，主要内容包括：本发明公开了一种卷缆缓冲装置,所述卷缆缓冲装置包括卷缆组件、驱动组件和缓冲组件,所述卷缆组件包括卷缆器和液压马达,所述卷缆器与所述液压马达相连,所述液压马达用于驱动所述卷缆器转动,以使所述卷缆器收卷线缆,所述驱动组件包括液压泵,所述液压泵与所述液压马达相连,所述液压泵用于驱动所述液压马达转动,所述缓冲组件包括缓冲阀和蓄能器,所述缓冲阀与所述液压泵、所述蓄能器和所述卷缆器相连,当所述液压马达启动时,所述液压泵内的部分液压油将通入至所述缓冲阀和所述蓄能器内,以降低所述液压马达启动时的加速度。本发明的卷缆缓冲装置可以在液压马达启动时进行缓冲,以避免线缆瞬间张紧,提高卷缆时的安全性。(The invention discloses a cable winding buffering device which comprises a cable winding assembly, a driving assembly and a buffering assembly, wherein the cable winding assembly comprises a cable winder and a hydraulic motor, the cable winder is connected with the hydraulic motor, the hydraulic motor is used for driving the cable winder to rotate so as to enable the cable winder to wind cables, the driving assembly comprises a hydraulic pump, the hydraulic pump is connected with the hydraulic motor and used for driving the hydraulic motor to rotate, the buffering assembly comprises a buffering valve and an energy accumulator, the buffering valve is connected with the hydraulic pump, the energy accumulator and the cable winder, and when the hydraulic motor is started, part of hydraulic oil in the hydraulic pump is introduced into the buffering valve and the energy accumulator so as to reduce the acceleration when the hydraulic motor is started. The cable winding buffer device can buffer when the hydraulic motor is started so as to avoid the instant tensioning of the cable and improve the safety of cable winding.)

1. A coiled cable buffering device, comprising:

the cable winding assembly comprises a cable winder and a hydraulic motor, the cable winder is connected with the hydraulic motor, and the hydraulic motor is used for driving the cable winder to rotate so as to enable the cable winder to wind cables;

the driving assembly comprises a hydraulic pump, the hydraulic pump is connected with the hydraulic motor, and the hydraulic pump is used for driving the hydraulic motor to rotate;

the buffer assembly comprises a buffer valve and an energy accumulator, the buffer valve is connected with the hydraulic pump, the energy accumulator and the cable winder,

when the hydraulic motor is started, part of hydraulic oil in the hydraulic pump is introduced into the buffer valve and the energy accumulator so as to reduce the acceleration of the hydraulic motor when the hydraulic motor is started.

2. The coiled cable buffering device according to claim 1, wherein the buffering valve comprises a valve body and a throttling member, the valve body has a first flow passage therein, a first end of the first flow passage is communicated with the hydraulic pump, a second end of the first flow passage is communicated with the accumulator, at least a part of the throttling member is disposed in the first flow passage, and the throttling member is configured to adjust a flow rate of hydraulic oil entering the first flow passage to control an acceleration of the hydraulic motor when the hydraulic motor is started.

3. The cable reel buffering device of claim 1, wherein the driving assembly further comprises an oil tank connected to the hydraulic pump, the oil tank being configured to provide hydraulic oil to the hydraulic pump,

the cushion valve also comprises a valve core, a valve cavity is arranged in the valve body, the valve core is arranged in the valve cavity and can move along the length direction of the valve cavity, a first pore passage and a second pore passage are arranged on the peripheral wall of the valve body, the first end of the first pore passage is communicated with the hydraulic pump, the second end of the first pore passage is communicated with the valve cavity and the first flow passage, the first pore passage is used for guiding hydraulic oil in the hydraulic pump into the valve cavity and the first flow passage, the first end of the second pore passage is communicated with the valve cavity, and the second end of the second pore passage is communicated with the oil tank,

when the pressure in the valve cavity does not exceed a preset pressure value, the valve core blocks the first pore passage and the second pore passage, and when the pressure in the valve cavity exceeds the preset pressure value, the valve core moves along the length direction of the valve cavity to enable the first pore passage and the second pore passage to be communicated, so that part of hydraulic oil in the driving assembly flows into the oil tank.

4. The coiled cable buffering device according to claim 3, wherein the cross-sectional area of the outer contour of the first end of the spool is the same as the cross-sectional area of the outer contour of the second end of the spool.

5. The coiled cable buffer device according to claim 3, wherein the buffer valve further comprises an elastic member having an elastic force for moving the spool along the length direction of the valve chamber,

the second end of the first flow passage is communicated with the first end of the valve cavity, a second flow passage is arranged in the valve body, the first end of the second flow passage is communicated with the first end of the first flow passage, the second end of the second flow passage is communicated with the second end of the valve cavity, the flow of the hydraulic oil in the first flow passage is smaller than that of the hydraulic oil in the second flow passage,

when the second pressure exceeds the sum of the first pressure and the elastic force, the valve core moves towards the first end of the valve cavity so as to enable the first pore passage and the second pore passage to be communicated with each other, and therefore partial hydraulic oil in the driving assembly flows into the oil tank.

6. The coiled cable buffering device according to claim 5, wherein the throttling element comprises a first section and a second section, the first section is connected with the second section, the first section is arranged in the first flow passage, and the throttling element is detachably connected with the valve body.

7. The cable winding buffering device according to claim 6, wherein an outer peripheral wall of the first section is attached to an inner peripheral wall of the first flow passage, an orifice passage penetrates through the first section and is communicated with the first flow passage, and a cross-sectional area of the orifice passage is smaller than a cross-sectional area of the second flow passage.

8. The coiled cable buffer device according to claim 7, wherein the valve cavity penetrates through the valve body along the length direction of the valve body, and the buffer valve further comprises a plugging member arranged at the end of the valve body to plug the valve cavity.

9. The coiled cable buffering device according to claim 8, wherein the buffering valve further comprises a sealing ring, and the sealing ring is disposed at least one of between the blocking member and the valve body, between the throttling member and the valve body, and between an outer peripheral wall of the valve element and an inner peripheral wall of the valve cavity.

10. The cable reeling buffering device of any one of claims 1-9, wherein the drive assembly further comprises a filter disposed between the hydraulic pump and the hydraulic motor for filtering impurities of hydraulic oil entering the hydraulic motor, and a control valve bank in communication with the hydraulic motor for controlling rotation of the hydraulic motor.

11. The cable winding buffer device according to claim 10, further comprising a car body, wherein the cable winding assembly, the driving assembly and the buffer assembly are all arranged on the car body.

Technical Field

The invention relates to the technical field of cable auxiliary equipment, in particular to a coiled cable buffering device.

Background

The shuttle car is a common short-distance coal transporting vehicle in the underground coal mine and can run in two directions. The shuttle car is usually driven by a motor and therefore must be connected to a cable. Under the operating condition of the shuttle car, one end of the cable is fixed, the other end of the cable is fixed on a cable drum of the shuttle car, and the cable drum is driven by the hydraulic motor. When the shuttle car is started by winding the cable, the cable is suddenly fluctuated in the process from a loose state to a tight state, so that the cable is thrown, and at the moment, if workers cross over the cable or are close to the cable, the workers are easily accidentally injured.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides a coiled cable buffer device, which can buffer when a hydraulic motor is started so as to avoid the instant tensioning of a cable and improve the safety of the coiled cable.

According to the embodiment of the invention, the coiled cable buffer device comprises: the cable winding assembly comprises a cable winder and a hydraulic motor, the cable winder is connected with the hydraulic motor, and the hydraulic motor is used for driving the cable winder to rotate so as to enable the cable winder to wind cables; the driving assembly comprises a hydraulic pump, the hydraulic pump is connected with the hydraulic motor, and the hydraulic pump is used for driving the hydraulic motor to rotate; the buffering assembly comprises a buffering valve and an energy accumulator, the buffering valve is connected with the hydraulic pump, the energy accumulator and the cable winder, when the hydraulic motor is started, part of hydraulic oil in the hydraulic pump is communicated to the buffering valve and the energy accumulator, and therefore acceleration of the hydraulic motor during starting is reduced.

According to the cable winding buffering device provided by the embodiment of the invention, when the hydraulic motor is started, a part of hydraulic oil in the hydraulic pump enters the buffering valve and the energy accumulator, and due to the buffering effect of the buffering valve and the energy accumulator, the pressure in the hydraulic motor slowly rises, so that the torque of the hydraulic motor is reduced, and the acceleration of the hydraulic motor during starting is reduced. Because the acceleration when the hydraulic motor starts reduces for the cable winder can not be with the tensioning of cable in the twinkling of an eye, thereby the security when having improved the roll cable and starting.

In some embodiments, the cushion valve includes a valve body and a throttling member, the valve body has a first flow passage therein, a first end of the first flow passage communicates with the hydraulic pump, a second end of the first flow passage communicates with the accumulator, at least a part of the throttling member is disposed in the first flow passage, and the throttling member is configured to adjust a flow rate of hydraulic oil entering the first flow passage to control an acceleration when the hydraulic motor is started.

In some embodiments, the driving assembly further includes an oil tank, the oil tank is connected to the hydraulic pump, the oil tank is configured to provide hydraulic oil to the hydraulic pump, the cushion valve further includes a valve core, the valve core is disposed in the valve cavity and is movable along a length direction of the valve cavity, a first hole and a second hole are disposed on a peripheral wall of the valve body, a first end of the first hole is communicated with the hydraulic pump, a second end of the first hole is communicated with the valve cavity and the first flow passage, the first hole is configured to introduce the hydraulic oil in the hydraulic pump into the valve cavity and the first flow passage, a first end of the second hole is communicated with the valve cavity, a second end of the second hole is communicated with the oil tank, when a pressure in the valve cavity does not exceed a preset pressure value, the valve core blocks the first hole and the second hole, when the pressure in the valve cavity exceeds a preset pressure value, the valve core moves along the length direction of the valve cavity so as to enable the first pore passage and the second pore passage to be communicated, and therefore part of hydraulic oil in the driving assembly flows into the oil tank.

In some embodiments, the cross-sectional area of the first end outer profile of the spool is the same as the cross-sectional area of the second end outer profile of the spool.

In some embodiments, the cushion valve further includes an elastic member, the elastic member has an elastic force that moves the valve core along a length direction of the valve cavity, a second end of the first flow passage is communicated with a first end of the valve cavity, the valve body has a second flow passage therein, a first end of the second flow passage is communicated with a first end of the first flow passage, a second end of the second flow passage is communicated with a second end of the valve cavity, a flow rate of the hydraulic oil in the first flow passage is smaller than a flow rate of the hydraulic oil in the second flow passage, the hydraulic oil introduced into the first end of the valve cavity through the first flow passage provides a first pressure to the first end of the valve core, the hydraulic oil introduced into the second end of the valve cavity through the second flow passage provides a second pressure to the second end of the valve core, and when the second pressure exceeds a sum of the first pressure and the elastic force, the valve core moves towards the direction of the first end of the valve cavity so as to enable the first pore passage and the second pore passage to be communicated, and therefore part of hydraulic oil in the driving assembly flows into the oil tank.

In some embodiments, the throttling element comprises a first section and a second section, the first section is connected with the second section, the first section is arranged in the first flow passage, and the throttling element is detachably connected with the first section.

In some embodiments, the outer peripheral wall of the first section is attached to the inner peripheral wall of the first flow channel, an orifice channel penetrates through the first section, the orifice channel is communicated with the first flow channel, and the cross-sectional area of the orifice channel is smaller than that of the second flow channel.

In some embodiments, the valve cavity penetrates through the valve body along the length direction of the valve body, and the cushion valve further comprises a plugging piece which is arranged at the end part of the valve body to plug the valve cavity.

In some embodiments, the cushion valve further comprises a sealing ring disposed at least one of between the blocking member and the valve body, between the throttling member and the valve body, and between an outer peripheral wall of the valve element and an inner peripheral wall of the valve chamber.

In some embodiments, the drive assembly further includes a filter disposed between the hydraulic pump and the hydraulic motor for filtering contaminants of hydraulic oil entering the hydraulic motor, and a control valve pack in communication with the hydraulic motor for controlling rotation of the hydraulic motor.

In some embodiments, the cable winding buffer device further comprises a vehicle body, and the cable winding assembly, the driving assembly and the buffer assembly are arranged on the vehicle body.

Drawings

Fig. 1 is a schematic view of an operating principle of a cable winding buffering device according to an embodiment of the present invention.

Fig. 2 is an overall schematic view of a cable winding buffer device according to an embodiment of the present invention.

Fig. 3 is a schematic view of a first operating state of a cushion valve of the cable reel buffering device according to the embodiment of the invention.

Fig. 4 is a schematic view of a second operating state of a cushion valve of the cable reel buffering device according to the embodiment of the invention.

Fig. 5 is a partial schematic view of a cable reel buffer according to an embodiment of the present invention.

Reference numerals:

1. a cable winding assembly; 11. a hydraulic motor; 12. a cable winder;

2. a drive assembly; 21. a hydraulic pump; 22. a filter; 23. an oil tank; 24. a control valve group;

3. a buffer assembly; 31. a cushion valve; 311. a valve body; 3111. a valve cavity; 3112. a first flow passage; 3113. a second flow passage; 3114. a first duct; 3115. a second duct; 3116. a third porthole; 312. a throttle member; 3121. a first stage; 31211. a flow channel is connected; 3122. a second stage; 313. a valve core; 314. an elastic member; 315. a blocking member; 316. a seal ring; 32. an accumulator;

4. a vehicle body.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A cable winding buffer according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 5, a cable winding buffer device according to an embodiment of the present invention includes a cable winding assembly 1, a driving assembly 2, and a buffer assembly 3. The cable rolling assembly 1 comprises a cable rolling device 12 and a hydraulic motor 11, wherein the hydraulic motor 11 is used for driving the cable rolling device 12 to rotate so as to enable the cable rolling device 12 to roll the cable. The driving assembly 2 comprises a hydraulic pump 21, the hydraulic pump 21 is connected with the hydraulic motor 11, and the hydraulic pump 21 is used for driving the hydraulic motor 11 to rotate. The damping assembly 3 comprises a damping valve 31 and an accumulator 32, the damping valve 31 being connected to the hydraulic pump 21, the accumulator 32 and the cable winder 12. When the hydraulic motor 11 is started, a part of the hydraulic oil in the hydraulic pump 21 will be introduced into the cushion valve 31 and the accumulator 32, thereby reducing the torque of the hydraulic motor 11 and reducing the acceleration of the hydraulic motor 11 when it is started.

According to the cable winding buffering device of the embodiment of the invention, when the hydraulic motor 11 is started, a part of hydraulic oil in the hydraulic pump 21 enters the buffering valve 31 and the accumulator 32, and due to the buffering effect of the buffering valve 31 and the accumulator 32, the pressure in the hydraulic motor 11 slowly rises, so that the torque of the hydraulic motor 11 is reduced, and the acceleration of the hydraulic motor 11 when the hydraulic motor 11 is started is reduced. Because the acceleration when the hydraulic motor 11 starts is reduced, the cable winder 12 can not tension the cable instantly, and the safety when winding the cable is improved.

In some embodiments, as shown in fig. 3 and 4, the cushion valve 31 includes a valve body 311 and a throttle 312, the valve body 311 has a first flow passage 3112 therein, one end of the first flow passage 3112 communicates with the hydraulic pump 21, the other end of the first flow passage 3112 communicates with the accumulator 32, at least a portion of the throttle 312 is disposed in the first flow passage 3112, and the throttle 312 is used to adjust the flow rate of hydraulic oil into the first flow passage 3112 to control the acceleration when the hydraulic motor 11 is started.

Optionally, the cable winder 12 includes a cable winding control valve, and the cable winding buffer device according to the embodiment of the present invention may control the winding of the cable through the cable winding control valve.

For example, the cushion valve 31 of the cable winding buffer device according to the embodiment of the present invention may be replaced with a throttle member 312 of a different type to change the flow rate of the hydraulic oil in the first flow passage 3112, so as to adjust the buffering time of the hydraulic motor 11, thereby improving the applicability of the cable winding buffer device according to the embodiment of the present invention.

Further, as shown in fig. 1, the driving assembly 2 further includes an oil tank 23, the oil tank 23 is connected to the hydraulic pump 21, and the oil tank 23 is used for supplying hydraulic oil to the hydraulic pump 21. The cushion valve 31 further includes a valve body 313, the valve body 311 has a valve cavity 3111 therein, the valve body 313 is disposed in the valve cavity 3111, and the valve body 313 is movable along a length direction (e.g., a left-right direction in fig. 3) of the valve cavity 3111.

As shown in fig. 3 and 4, the peripheral wall of the valve body 311 is provided with a first port passage 3114 and a second port passage 3115, a first end (e.g., a lower end of the first port passage 3114 in fig. 3) of the first port passage 3114 is communicated with the hydraulic pump 21, a second end (e.g., an upper end of the first port passage 3114 in fig. 3) of the first port passage 3114 is communicated with the valve chamber 3111 and the first flow passage 3112, the first port passage 3114 is used for introducing hydraulic oil in the hydraulic pump 21 into the valve chamber 3111 and the first flow passage 3112, a first end (e.g., a lower end of the second port passage 3115 in fig. 3) of the second port passage 3115 is communicated with the valve chamber 3111, and a second end (e.g., an upper end of the second port passage 3115 in fig. 3) of.

As shown in fig. 3, when the pressure in the valve chamber 3111 does not exceed a predetermined pressure, the valve core 313 blocks the first passage 3114 and the second passage 3115. As shown in fig. 4, when the pressure in the valve chamber 3111 exceeds a predetermined pressure, the valve spool 313 moves along the length direction of the valve chamber 3111 to communicate the first duct 3114 and the second duct 3115, so that a part of the hydraulic oil in the driving assembly 2 flows into the oil tank 23.

It will also be appreciated that when the pressure at the right end of the valve chamber 3111 exceeds the pressure at the left end of the valve chamber 3111, the valve spool 313 moves to the left to close the first port 3114 and the second port 3115 with the valve spool 313. When the pressure at the left end of the valve chamber 3111 exceeds the pressure at the right end of the valve chamber 3111, the spool 313 moves rightward to communicate the first port 3114 with the second port 3115, so that the hydraulic oil in the hydraulic pump 21 is unloaded through the first port 3114 and the second port 3115 of the cushion valve 31, and the unloaded hydraulic oil is introduced into the oil tank 23.

It can be understood that, due to the unloading function of the cushion valve 31, when the hydraulic motor 11 is started, the hydraulic oil in the hydraulic pump 21 is quickly unloaded through the cushion valve 31, so that the oil pressure when the hydraulic motor 11 is started is reduced. In addition, due to the quick unloading function of the buffer valve 31, the volume of the energy accumulator 32 can be smaller, so that the volume of the buffer assembly 3 is reduced, and the space utilization rate of the cable coiling buffer device is improved.

In some embodiments, as shown in fig. 3 and 4, the cushion valve 31 further includes an elastic member 314, and the elastic member 314 has an elastic force that moves the valve spool 313 along the length direction of the valve chamber 3111. For example, the elastic member 314 is a spring, and the elastic member 314 is disposed at a first end of the valve element 313 (e.g., a right end of the valve element 313 in fig. 3).

As shown in fig. 3 and 4, a second end of the first flow passage 3112 (e.g., a right end of the first flow passage 3112 in fig. 3) communicates with a first end of the valve chamber 3111 (e.g., a right end of the valve chamber 3111 in fig. 3), the valve body 311 has a second flow passage 3113 therein, the first end of the second flow passage 3113 (e.g., a right end of the second flow passage 3113 in fig. 3) communicates with the first end of the first flow passage 3112 (e.g., a left end of the first flow passage 3112 in fig. 3), and the second end of the second flow passage 3113 (e.g., a left end of the second flow passage 3113 in fig. 3) communicates with a second end of the valve chamber 3111 (e.g., a left end of the valve chamber 3111 in.

As shown in fig. 3 and 4, the hydraulic oil introduced into the first end of the valve chamber 3111 through the first flow passage 3112 provides a first pressure to the first end of the spool 313. Hydraulic oil communicated to the second end of the valve chamber 3111 through the second passage 3113 provides a second pressure to the second end of the spool 313. When the second pressure exceeds the sum of the first pressure and the elastic force, the valve spool 313 moves toward the first end of the valve chamber 3111 to communicate the first port 3114 and the second port 3115, so that a part of the hydraulic oil in the driving assembly 2 flows into the oil tank 23.

The flow rate of the hydraulic oil in the first flow passage 3112 is smaller than that of the hydraulic oil in the second flow passage 3113, and it can be understood that the orifice 312 is provided in the first flow passage 3112, so that the aperture of the first flow passage 3112 is smaller than that of the second flow passage 3113, and the flow rate of the hydraulic oil in the first flow passage 3112 is smaller than that of the second flow passage 3113.

Alternatively, as shown in fig. 3 and 4, the throttle member 312 includes a first section 3121 and a second section 3122, the first section 3121 is connected to the second section 3122, the first section 3121 is disposed in the first flow passage 3112, and the throttle member 312 is threadedly coupled to the valve body 311. Specifically, the outer peripheral wall of the first section 3121 is attached to the inner peripheral wall of the first flow channel 3112, a throttle channel 31211 penetrates through the first section 3121, the throttle channel 31211 is communicated with the first flow channel 3112, and the cross-sectional area of the throttle channel 31211 is smaller than the cross-sectional area of the second flow channel 3113.

Preferably, as shown in fig. 3 and 4, the outer profile of a first end of the spool 313 (e.g., a right end of the spool 313 in fig. 3) has the same cross-sectional area as the outer profile of a second end of the spool 313 (e.g., a left end of the spool 313 in fig. 3).

It is understood that, as shown in fig. 4, when the pressure of the first port 3114 increases, the flow rate of the first flow passage 3112 into the right end of the valve chamber 3111 is smaller and the flow rate of the second flow passage 3113 into the left end of the valve chamber 3111 is larger due to the throttle member 312 installed in the first flow passage 3112. So that the first pressure is greater than the sum of the second pressure and the elastic force, the spool 313 moves rightward, and the hydraulic oil is unloaded. When the pressure of the accumulator 32 slowly increases, the first pressure is gradually smaller than the sum of the second pressure and the elastic force, and thus the valve spool 313 slowly moves leftward, eventually closing off the first port 3114 and the second port 3115.

Alternatively, as shown in fig. 3 and 4, the valve cavity 3111 penetrates the valve body 311 along a length direction (e.g., a left-right direction in fig. 3) of the valve body 311, and the cushion valve 31 further includes a sealing member 315, wherein the sealing member 315 is disposed at an end of the valve body 311 to seal the valve cavity 3111. For example, the blocking member 315 is a bolt plug, and the blocking member 315 is screwed with the inner peripheral wall of the valve cavity 3111.

Preferably, as shown in fig. 3 and 4, the cushion valve 31 further includes a plurality of sealing rings 316, and the sealing rings 316 are respectively disposed between the blocking member 315 and the valve body 311, between the throttling member 312 and the valve body 311, and between the outer peripheral wall of the valve core 313 and the inner peripheral wall of the valve cavity 3111, so as to improve the sealing performance of the cushion valve 31 of the cable winding cushion device according to the embodiment of the present invention.

In some embodiments, as shown in fig. 1, the driving assembly 2 further includes a filter 22 and a control valve assembly 24, the filter 22 is disposed between the hydraulic pump 21 and the hydraulic motor 11, and the filter 22 is used for filtering impurities of the hydraulic oil entering the hydraulic motor 11. A control valve block 24 communicates with the hydraulic motor 11 for controlling the rotation of the hydraulic motor 11.

Specifically, as shown in fig. 2 and 5, the cable winding buffer device further includes a vehicle body 4, for example, the vehicle body 4 is a vehicle body 4 of a shuttle car. The cable winding assembly 1, the driving assembly 2 and the buffer assembly 3 are all arranged on the vehicle body 4.

A cable coiling buffer device according to some specific examples of the invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 5, the cable winding buffer device according to the embodiment of the present invention includes a vehicle body 4, a cable winding assembly 1, a driving assembly 2, and a buffer assembly 3. The cable winding assembly 1 comprises a cable winder 12 and a hydraulic motor 11, the driving assembly 2 comprises a hydraulic pump 21, a filter 22, a control valve group 24 and an oil tank 23, and the buffering assembly 3 comprises a buffering valve 31 and an accumulator 32. The cushion valve 31 includes a valve body 311, a valve spool 313, a throttle member 312, a plug member 315, and a seal ring 316.

As shown in fig. 1, 3 and 4, the oil tank 23 is connected to the hydraulic pump 21, the hydraulic pump 21 is connected to the filter 22, the filter 22 is connected to the control valve group 24, the control valve group 24 is connected to the cushion valve 31 and the hydraulic motor 11, the cushion valve 31 is connected to the accumulator 32 and the oil tank 23, and the hydraulic motor 11 is connected to the cable winder 12 and the oil tank 23.

As shown in fig. 1, the accumulator 32 is a bladder accumulator 32, and the pressure inside the accumulator 32 may vary.

As shown in fig. 3 and 4, the valve body 311 has a valve cavity 3111 therein, the valve cavity 3111 penetrates the valve body 311 along a length direction thereof, and a sealing member 315 is screwed to an end of the valve cavity 3111 to seal both ends of the valve cavity 3111. The valve core 313 is disposed in the valve cavity 3111, and the valve core 313 can move along the axial direction of the valve body 311. The cross-sectional area of the outer contour of the right end of the spool 313 is the same as the cross-sectional area of the outer contour of the left end of the spool 313.

As shown in fig. 3 and 4, the valve body 311 has a peripheral wall provided with a first port 3114, a second port 3115 and a third port 3116, one end of the first port 3114 is communicated with the hydraulic pump 21, the other end of the first port 3114 is communicated with the valve chamber 3111, one end of the second port 3115 is communicated with the oil tank 23, the other end of the second port 3115 is communicated with the valve chamber 3111, one end of the third port 3116 is communicated with the accumulator 32, and the other end of the third hollow island is communicated with the valve chamber 3111.

As shown in fig. 3 and 4, a first flow passage 3112 and a second flow passage 3113 are provided in the valve body 311, a left end of the first flow passage 3112 communicates with the first port passage 3114, and a right end of the first flow passage 3112 communicates with a right end of the valve chamber 3111. The right end of the second flow passage 3113 communicates with the first port passage 3114, and the left end of the second flow passage 3113 communicates with the left end of the valve chamber 3111.

As shown in fig. 3 and 4, the sealing rings 316 are respectively disposed between the blocking member 315 and the valve body 311, between the orifice member 312 and the valve body 311, and between the outer peripheral wall of the valve element 313 and the inner peripheral wall of the valve cavity 3111, so as to improve the sealing performance of the cushion valve 31 of the cable winding cushion device according to the embodiment of the present invention.

As shown in fig. 3 and 4, the throttle member 312 includes a first section 3121 and a second section 3122, the first section 3121 is connected to the second section 3122, the first section 3121 is disposed in the first flow passage 3112, and the throttle member 312 is threadedly coupled to the valve body 311. Specifically, the outer peripheral wall of the first section 3121 is attached to the inner peripheral wall of the first flow channel 3112, a throttle channel 31211 penetrates through the first section 3121, the throttle channel 31211 is communicated with the first flow channel 3112, and the cross-sectional area of the throttle channel 31211 is smaller than the cross-sectional area of the second flow channel 3113.

It is understood that the cushion valve 31 can adjust the cushion time of the hydraulic motor 11 by replacing the throttle member 312 having the throttle passage 31211 with a different orifice size to control the flow rate of the hydraulic oil into the first flow passage 3112. For example, the buffering time of the hydraulic motor 11 can be adjusted to 5 seconds, and it can be understood that the time from the slack state to the tight state of the cable is prolonged to 5 seconds, during which the pressure of the hydraulic motor 11 slowly rises, thereby avoiding the cable fluctuation problem caused by the instantaneous tight of the cable.

As shown in fig. 3 and 4, the hydraulic oil introduced into the first end of the valve chamber 3111 through the first flow passage 3112 provides a first pressure to the first end of the spool 313. Hydraulic oil communicated to the second end of the valve chamber 3111 through the second passage 3113 provides a second pressure to the second end of the spool 313. When the second pressure exceeds the sum of the first pressure and the elastic force, the valve spool 313 moves toward the first end of the valve chamber 3111 to communicate the first port 3114 and the second port 3115, so that a part of the hydraulic oil in the driving assembly 2 flows into the oil tank 23.

As shown in fig. 3 and 4, when the pressure in the first port 3114 increases, the flow rate of the first flow passage 3112 into the right end of the valve chamber 3111 is small and the flow rate of the second flow passage 3113 into the left end of the valve chamber 3111 is large due to the throttle member 312 installed in the first flow passage 3112. So that the first pressure is greater than the sum of the second pressure and the elastic force, the spool 313 moves rightward, and the hydraulic oil is unloaded. When the pressure of the accumulator 32 slowly increases, the first pressure is gradually smaller than the sum of the second pressure and the elastic force, and thus the valve spool 313 slowly moves leftward, eventually closing off the first port 3114 and the second port 3115.

Therefore, according to the cable winding buffering device provided by the embodiment of the invention, when the hydraulic motor 11 is started, the buffering valve 31 and the energy accumulator 32 can buffer the hydraulic oil in the hydraulic pump 21, so that the oil pressure when the hydraulic motor 11 is started is reduced, and the problem of cable fluctuation caused by instantaneous tightening of cables is avoided.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.