Tensioning variable-speed adjusting device for flexible component and adjusting method of tensioning variable-speed adjusting device

Abstract

The invention belongs to the technical field of flexible component tensioning adjustment, and provides a tensioning variable-speed adjusting device for a flexible component and an adjusting method thereof.The tensioning variable-speed adjusting device comprises a shell, a reset spring, a tensioning adjusting piece, a planetary gear assembly, a driving assembly, a detection assembly and a limiting disc; the reset spring, the tensioning adjusting piece, the planetary gear assembly and the limiting disc are sequentially and coaxially arranged in the shell, the second end of the shell is in threaded connection with the limiting disc, a planet carrier of the planetary gear assembly moves in the axial direction of the limiting disc, and a screw of the connecting piece penetrates through the reset spring from the first end of the shell to be in threaded connection with the tensioning adjusting piece. The reset spring is located between the second groove of the shell and the circular groove in the bottom of the tensioning adjusting piece. Through cooperation of the tension adjusting piece and the connecting piece, variable-speed adjustment, automatic adjustment and over-tight fracture detection are integrated, the tension force is automatically adjusted through the planetary gear assembly and the driving assembly, and the device has the advantages of being high in integration degree, convenient and fast to operate and high in stability.

Description

Technical Field

[0001] The present invention relates to the technical field of tension adjustment of flexible members, and particularly relates to a tension variable-speed adjustment device for flexible members and an adjustment method thereof, which are particularly applicable to flexible members such as chains, belts, and wire ropes. Background Art

[0002] For flexible members such as chains, belts, and wire ropes, the tensioning method usually adopts adjusting the screw to change the sprocket spacing. The existing technology has problems such as cumbersome operation and single function. When the adjusting screw is too long, the adjusting speed is slow, and it does not have a variable-speed adjustment function, resulting in reduced efficiency; and when adjusting the flexible member, it is mostly judged based on experience whether the tension requirement is met, and the situation of the flexible member being too tight is likely to occur; when the flexible member becomes loose due to long-term power transmission, it is impossible to automatically tighten the flexible member, that is, it does not have an automatic adjustment function, and it is difficult to detect and give an alarm in time when the flexible member has a fracture fault, which is difficult to meet the usage requirements of the equipment. Therefore, a tension variable-speed adjustment device for flexible members and an adjustment method thereof are needed. Summary of the Invention

[0003] The tension variable-speed adjustment device for flexible members and the adjustment method thereof of the present invention integrate variable-speed adjustment, over-tight detection, automatic adjustment, and fracture detection through the cooperation of a tension adjustment member and a connecting member, automatically adjust the tension force through a planetary gear assembly and a driving assembly, and have the characteristics of high integration, convenient operation, and high stability, solving the problem that the tension force of the flexible member becomes smaller due to long-term work relaxation.

[0004] A tension variable speed adjustment device for a flexible member according to the present invention includes a housing, a return spring, a tension adjustment member, a planetary gear assembly, a drive assembly, a connecting member, a detection assembly, and a limit disk. The connecting member, the return spring, the tension adjustment member, the planetary gear assembly, and the limit disk are coaxially arranged in the housing in sequence. The second end of the housing is threadedly connected to the limit disk. The planet carrier of the planetary gear assembly moves axially along the limit disk. The screw of the connecting member passes through the return spring from the first end of the housing and is helically connected to the threaded hole of the tension adjustment member. The return spring is located between the second groove of the housing and the circular groove at the bottom of the tension adjustment member. The bottom of the tension adjustment member is designed with a circular groove, and its external is a boss structure. The tension adjustment member is provided with a first gear ring, a base, a fine adjustment boss, a limit step, a second gear ring, and a limit block. The base is located at the first end of the tension adjustment member. The first gear ring and the limit step are respectively arranged at both ends of the base. The fine adjustment boss and the second gear ring are respectively arranged at both ends of the middle rotating shaft of the tension adjustment member. A plurality of the limit blocks are symmetrically arranged on the rotating shaft of the tension adjustment member. The planetary gear assembly includes a planet carrier and a plurality of planetary gears. The planet carrier is coaxially sleeved on the rotating shaft of the tension adjustment member. The planetary gears are sleeved on the planet shafts on the planet carrier. The planetary gears are meshed with the second gear ring on the radial outer side of the tension adjustment member, and the planetary gears are meshed with the housing on the radial inner side of the housing. The planetary gear assembly slides along the third groove inside the housing. A plurality of symmetrically arranged slideways and annular grooves are formed inside the first end of the planet carrier. A plurality of planetary gear mounting shafts are provided at the first end of the planet carrier, and a coarse adjustment boss is provided at the second end of the planet carrier. The drive assembly includes a driving gear, a driven gear, and a drive motor. The driven gear is respectively meshed with the driving gear and the first gear ring. The output shaft of the drive motor is connected to the driving gear. The detection assembly includes a detection frame, a tension sensor, a fracture detection sensor, and an over-tightening detection sensor. The end of the short rod of the detection frame is connected to the connection head of the connecting member. The long rod of the detection frame slides in the groove at the top of the housing. The fracture detection sensor and the over-tightening detection sensor are arranged in the detection sensor mounting holes at the top of the housing. The tension sensor is located in the middle of the connecting member.

[0005] Preferably, a first groove, a second groove, a third groove and a fourth groove are provided in the housing. The first groove is of a quadrilateral structure. The second groove is circular and is provided with the return spring. The inner diameter of the second groove is larger than the outer diameter of the first gear ring in the tension adjusting member. The third groove is an internal gear ring. The pitch circle diameter of the teeth on the third groove is larger than the inner diameter of the second groove. The internal gear ring in the third groove meshes with the planetary gear of the planetary gear assembly, and the planetary gear slides in the third groove. The fourth groove is threadedly connected to the limit disc. The fourth groove is larger than the root circle diameter of the third groove. An active gear groove and a driven gear groove are provided on the outer side of the housing. An active gear shaft is provided at the center of the active gear groove, and a driven gear shaft is provided at the center of the driven gear groove.

[0006] Preferably, a connecting chain, a belt and a wire rope flexible member, as well as a joint of the detection frame, are provided at the first end of the connecting member. The middle section of the connecting member is a special quadrilateral and is in clearance fit with the first groove of the housing.

[0007] Preferably, the limiting block of the tension adjusting member is arranged in the annular groove through the slideway of the planet carrier, so that the planet carrier rotates circumferentially relative to the tension adjusting member. The coarse adjustment boss of the planet carrier is lower than the fine adjustment boss of the tension adjusting member. The tension adjusting member rotates around its central axis. While rotating around the central axis with the planetary axis parallel to the central axis as the center, multiple planetary gears revolve around the central axis at the same time. The planet carrier rotates around the central axis.

[0008] Preferably, the tension adjusting member is used to drive the connecting member to move axially, so as to finely adjust the tension of the flexible member; the planet carrier drives the planetary gears to rotate and revolve, and then drives the tension adjusting member to rotate. According to the transmission ratio between the planet carrier and the second gear ring in the tension adjusting member, the tension adjusting member is enabled to rotate quickly, and then the connecting member is driven to move axially, so as to quickly adjust the tension of the flexible member. The relationship between the torque M of the drive motor in the drive assembly and the tension F of the flexible member is:

[0009]

[0010] In the formula, d is the nominal diameter of the screw in the connecting member, K is the torque coefficient, X4 is the number of teeth of the first gear ring, and X2 is the number of teeth of the active gear.

[0011] Preferably, the detection component further includes a fracture detection magnet and an over-tightening detection magnet. The fracture detection magnet is arranged at the end of the long rod of the detection frame, and the over-tightening detection magnet is arranged at the bending part of the detection frame. The over-tightening detection magnet is arranged opposite to the detection surface of the over-tightening detection sensor. When manually adjusting the flexible member, the detection frame moves towards the over-tightening detection sensor under the drive of the connecting member. When the over-tightening detection magnet enters the detection range of the over-tightening detection sensor, the signal lamp of the over-tightening detection sensor lights up, and the tension of the flexible member reaches the preset requirement.

[0012] Preferably, the tension of the flexible member is monitored in real time by the tension sensor. When the flexible member becomes loose due to long-term operation, the tension sensor detects that the applied tension decreases. The main controller controls the drive motor to drive the driving gear to rotate. The driving gear drives the tension adjusting member to rotate through the driven gear, driving the connecting member to move towards the limiting disc, thereby re-tightening the flexible member to the balanced state and realizing the automatic tensioning of the flexible member.

[0013] Preferably, the detection range of the fracture detection sensor is stroke C. The fracture detection magnet is at a distance of stroke B from the detection boundary of the fracture detection sensor. There is a stroke E between the bottom of the planetary carrier and the limiting disc. There is a stroke F between the first tooth ring of the tension adjusting member and the lower surface of the limiting cylinder, and stroke F is equal to stroke E. There is a stroke D between the head end of the connecting member and the first end of the housing, and stroke D is greater than stroke E.

[0014] Preferably, the fracture detection sensor is a Hall displacement sensor. The fracture detection magnet is arranged opposite to the detection surface of the fracture detection sensor. When a fracture fault occurs in the flexible member, the tension of the flexible member acting on the connecting member suddenly becomes zero, and the return spring resets, pushing the tension adjusting member and the planetary gear assembly to move towards the limiting disc, thereby driving the connecting member and the detection frame to move. When the bottom of the planetary carrier touches the limiting disc, it stops. At this time, the displacement of the fracture detection magnet is stroke E, and stroke E is greater than stroke B. The fracture detection magnet enters the detection range of the fracture detection sensor, triggering the fracture detection sensor and sending out an alarm for the fracture of the flexible member.

[0015] In a second aspect, the present invention provides an adjustment method for the tension variable speed adjustment device for the foregoing flexible member, including the following steps:

[0016] S1. Determine whether the flexible member is loose due to long-term operation through the tension sensor. If the flexible member 12 is loose, execute step S3; otherwise, execute step S2;

[0017] S2. Keep the drive motor unchanged to maintain the tension;

[0018] S3. The main controller controls the drive motor to drive the driving gear to rotate, thereby driving the tension adjusting member to rotate. Under the action of the tension adjusting member, the tensioning member moves towards the direction close to the limit disc, driving the detection frame to move towards the direction close to the limit disc.

[0019] S4. Monitor the moving distance L of the detection frame and the stroke B. If the moving distance L of the detection frame > the stroke B, execute step S5; otherwise, execute step S6.

[0020] S5. The fracture detection magnet enters the detection range of the fracture detection sensor, and the sensor emits an alarm signal, and the device stops operating.

[0021] S6. The tension adjusting member moves towards the direction close to the limit disc, tightens the flexible member to the balanced state, and makes the tension of the flexible member reach the preset tension.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The tension variable-speed adjusting device for flexible members of the present invention, through the cooperation of the tension adjusting member and the connecting member, integrates variable-speed adjustment, over-tightening detection, automatic adjustment and fracture detection, with high integration degree. It is automatically adjusted through the planetary gear assembly and the drive assembly to solve the problem that the tension of the flexible member becomes smaller due to long-term work relaxation.

[0024] 2. The tension variable-speed adjusting device for flexible members of the present invention, through the tension adjusting member, performs rapid adjustment during the initial tensioning, and performs slow and fine adjustment when approaching the required tension range, saving the tensioning time while meeting the accuracy requirements, and effectively improving the tensioning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the tension variable-speed adjusting device for flexible members of the present invention;

[0026] Figure 2 is the sectional view taken along the A-A plane of the tension variable-speed adjusting device for flexible members of the present invention;

[0027] Figure 3 is the sectional view taken along the B-B plane of the tension variable-speed adjusting device for flexible members of the present invention;

[0028] Figure 4 is the exploded view of each component in the tension variable-speed adjusting device for flexible members of the present invention;

[0029] Figure 5 is the connection relationship diagram of each component in the tension variable-speed adjusting device for flexible members of the present invention;

[0030] Figure 6 is the structural schematic diagram of the tension adjusting member in the present invention;

[0031] Figure 7 It is a schematic structural diagram of the planetary gear assembly in the present invention;

[0032] Figure 8 It is a schematic structural diagram of the tension adjusting member cooperating with the planetary gear assembly in the present invention;

[0033] Figure 9 It is a schematic structural diagram of the connecting member in the present invention;

[0034] Figure 10 It is a C-C sectional view of the housing in the present invention;

[0035] Figure 11 It is a schematic structural diagram of the housing in the present invention;

[0036] Figure 12 It is a schematic diagram of the cooperation of the tension adjusting member, the planetary gear assembly and the housing in the present invention;

[0037] Figure 13 It is a schematic diagram of the positions of the tension adjusting member, the driven gear, the driving gear and the housing in the present invention;

[0038] Figure 14 It is a schematic diagram of the use of the tension variable speed adjusting device for flexible members in the present invention;

[0039] Figure 15 It is a flow chart of the adjusting method of the tension variable speed adjusting device for flexible members in the present invention.

[0040] Main reference numerals:

[0041] Housing 1, first groove 101, second groove 102, third groove 103, fourth groove 104, driving gear groove 105, driven gear groove 106, driving gear shaft 107, driven gear shaft 108, limiting disc 2, planet carrier 3, coarse adjustment boss 31, annular groove 32, slideway 33, planetary gear 6, tension adjusting member 4, circular groove 41, first toothed ring 42, base 43, fine adjustment boss 44, limiting step 45, second toothed ring 46, limiting block 47, tension sensor 9, return spring 11, driving motor 13, first limiting cover 14, driving gear 15, driven gear 16, second limiting cover 17, detection frame 8, fracture detection sensor 5, over-tight detection sensor 7, connecting member 10, joint 1001, screw 1002, flexible member 12. Detailed description of the specific implementation

[0042] To elaborate on the technical content, structural features, achieved objectives and effects of the present invention, the following will be described in detail with reference to the accompanying drawings of the specification.

[0043] As Figure 1 AndFigure 3 As shown in the figure, the tension variable speed adjusting device of the present invention for flexible components includes a housing 1, a return spring 11, a tension adjusting member 4, a planetary gear assembly, a driving assembly, a connecting member 10, a detection assembly, and a limit disc 2. The connecting member 10, the return spring 11, the tension adjusting member 4, the planetary gear assembly, and the limit disc 2 are coaxially arranged in the housing 1 in sequence. The second end of the housing 1 is threadedly connected with the limit disc 2. The planet carrier 3 of the planetary gear assembly moves axially along the limit disc 2. The screw rod 1002 of the connecting member 10 passes through the return spring 11 from the first end of the housing 1 and is helically connected with the threaded hole of the tension adjusting member 4. The return spring 11 is located between the second groove 102 of the housing 1 and the circular groove 41 at the bottom of the tension adjusting member 4.

[0044] As Figure 2 shown in the figure, the housing 1 is provided with a first groove 101, a second groove 102, a third groove 103, and a fourth groove 104. The first groove 101 is a quadrilateral structure. The second groove 102 is circular and is provided with a return spring 11. The inner diameter of the second groove 102 is larger than the outer diameter of the first gear ring 42 in the tension adjusting member 4. The third groove 103 is an inner gear ring. The pitch circle diameter of the third groove 103 is larger than the inner diameter of the second groove 102. The inner gear ring of the third groove 103 meshes with the planetary gear 6 of the planetary gear assembly, and the planetary gear 6 slides in the third groove 103. The fourth groove 104 is threadedly connected with the limit disc 2. The fourth groove 104 is larger than the root circle diameter of the third groove 103. An active gear groove 105 and a driven gear groove 106 are provided on the outer side of the housing 1. An active gear shaft 107 is provided at the center of the active gear groove 105, and a driven gear shaft 108 is provided at the center of the driven gear groove 106.

[0045] As Figure 4 shown in the figure, a circular groove 41 is provided at the bottom of the tension adjusting member 4, and its outside is a boss structure. The tension adjusting member 4 is provided with a first gear ring 42, a base 43, a fine adjustment boss 44, a limit step 45, a second gear ring 46, and a limit block 47. The base 43 is located at the first end of the tension adjusting member 4. The first gear ring 42 and the limit step 45 are respectively arranged at both ends of the base 43. The fine adjustment boss 44 and the second gear ring 46 are respectively arranged at both ends of the rotating shaft in the tension adjusting member 4. A plurality of limit blocks 47 are symmetrically arranged on the rotating shaft of the tension adjusting member 4.

[0046] As Figure 5 and Figure 6As shown in the figure, slow fine-tuning: drive the connecting member 10 to move axially through the tension adjusting member 4, so as to finely adjust the tension of the flexible member 12; fast rough adjustment: drive the planet gear 6 to rotate and revolve by the planet carrier 3, and then drive the tension adjusting member 4 to rotate. According to the transmission ratio relationship between the planet carrier 3 and the second gear ring 42 of the tension adjusting member 4, the tension adjusting member 4 is driven to rotate quickly, and then the connecting member 10 is driven to move axially, quickly adjusting the tension of the flexible member 12. The relationship between the torque M of the drive motor 13 and the tension F of the flexible member in the drive assembly is:

[0047]

[0048] In the formula, d is the nominal diameter of the screw in the connecting member, K is the torque coefficient, X4 is the number of teeth of the first gear ring, and X2 is the number of teeth of the driving gear.

[0049] The tension of the flexible member 12 is monitored in real time by the tension sensor 9. When the flexible member 12 becomes loose after long-term operation, the tension sensor 9 detects that the received tension decreases. The main controller controls the drive motor 13 to drive the driving gear 15 to rotate. The driving gear 15 drives the tension adjusting member 4 to rotate through the driven gear 16, driving the connecting member 10 to move towards the direction close to the limit disc 2, and then re-tightening the flexible member 12 to the balanced state, realizing the automatic tension of the flexible member 12. When the displacement distance of the connecting member 10 exceeds the stroke B, the fracture detection magnet enters the detection range of the fracture detection sensor, the flexible member 12 is overly loose, the fracture detection sensor emits an alarm signal, and the device stops working to replace the flexible member 12.

[0050] As Figure 7 and Figure 8As shown in the figure, the planetary gear assembly includes a planet carrier 3 and a plurality of planetary gears 6. The planet carrier 3 is coaxially sleeved on the rotating shaft of the tension adjusting member 4. The planetary gears 6 are sleeved on the planet shafts on the planet carrier 3. The planetary gears 6 are meshed with the first gear ring 42 on the radially outer side of the tension adjusting member 4, and the planetary gears 6 are meshed with the housing 1 on the radially inner side of the housing 1. The planetary gear assembly slides along the third groove 103 inside the housing 1. A plurality of symmetrically arranged slideways 33 and an annular groove 32 are formed inside the planet carrier 3. The first end of the planet carrier 3 is provided with a plurality of planetary gear mounting shafts, and the second end of the planet carrier 3 is provided with a coarse adjustment boss 31. The drive assembly includes a driving gear 15, a driven gear 16 and a drive motor 13. The driven gear 16 is respectively meshed with the driving gear 15 and the first gear ring 42. The output shaft of the drive motor 13 is connected to the driving gear 15. The planetary gear assembly further includes a first limit cover 14 located outside the driving gear 15 and a second limit cover 17 located outside the driven gear 16. The limiting block 47 of the tension adjusting member 4 is arranged in the annular groove 32 through the slideway 33 of the planet carrier 3, so that the planet carrier 3 rotates circumferentially relative to the tension adjusting member 4. The coarse adjustment boss 31 of the planet carrier 3 is lower than the fine adjustment boss 44 of the tension adjusting member 4. The tension adjusting member 4 rotates around its central axis. The plurality of planetary gears 6 rotate around the central axis while revolving around the central axis with the planet axes parallel to the central axis as the center, and the planet carrier 3 rotates around the central axis.

[0051] As Figure 9 shown, the first end of the connecting member 10 is provided with a connecting chain, a belt and a flexible member 12 of a steel wire rope, as well as a joint 1001 for detecting the frame 8. The middle section of the connecting member 10 is a special quadrilateral and is in clearance fit with the first groove 101 of the housing 1.

[0052] As Figures 10 to 14As shown, the detection component includes a detection frame 8, a tension sensor 9, a break detection sensor 5, and an over-tight detection sensor 7. The end of the short rod of the detection frame 8 is connected to the joint 1001 of the connector 10. The long rod of the detection frame 8 is slidably arranged in the groove at the top of the housing 1. The break detection sensor 5 and the over-tight detection sensor 7 are arranged in the detection sensor mounting holes at the top of the housing 1. The tension sensor 9 is located in the middle of the connector 10. The detection component 8 also includes a break detection magnet and an over-tight detection magnet. The break detection magnet is arranged at the end of the long rod of the detection frame 8, and the over-tight detection magnet is arranged at the bent part of the detection frame 8. The over-tight detection magnet is arranged opposite to the detection surface of the over-tight detection sensor 7. When manually adjusting the flexible member 12, the detection frame 8 moves in the direction close to the over-tight detection sensor 7 driven by the connector 10. When the over-tight detection magnet enters the detection range of the over-tight detection sensor 7, the signal lamp of the over-tight detection sensor 7 lights up, and the tension of the flexible member 12 reaches the preset requirement. The detection range of the break detection sensor 5 is stroke C. There is a stroke B between the break detection magnet and the detection boundary of the break detection sensor 5. There is a stroke E between the bottom of the planet carrier 3 and the limit disk 2. There is a stroke F between the first gear ring 42 of the tension adjusting member 4 and the lower surface of the limit cylinder, and the stroke F is equal to the stroke E to ensure that the tension adjusting member 4 is always engaged with the driven gear 16 when moving. There is a stroke D between the head end of the connector 10 and the first end of the housing 1, and the stroke D is greater than the stroke E to avoid the movement of the tension adjusting member 4 being restricted by the joint 1001 in the connector 10. The break detection sensor 5 is a Hall displacement sensor. The break detection magnet is arranged opposite to the detection surface of the break detection sensor 5. When a break fault occurs in the flexible member 12, the tension of the flexible member 12 acting on the connector 10 suddenly becomes zero, and the return spring 11 returns to its original position, pushing the tension adjusting member 4 and the planetary gear assembly to move in the direction close to the limit disk 2, thereby driving the connector 10 and the detection frame 8 to move. When the bottom of the planet carrier 3 contacts the limit disk 2, it stops. At this time, the displacement of the break detection magnet is stroke E, and the stroke E is greater than the stroke B. The break detection magnet enters the detection range of the break detection sensor 5, triggering the break detection sensor 5 and sending out an alarm for the break of the flexible member 12.

[0053] As Figure 15 shown, in a second aspect, the present invention provides an adjustment method for a tension variable speed adjustment device for a flexible member, including the following steps:

[0054] S1. Judge whether the flexible member 12 is loose due to long-term work through the tension sensor 9. If the flexible member 12 is loose, execute step S3; otherwise, execute step S2;

[0055] S2. Keep the driving motor 13 unchanged to maintain the tension;

[0056] S3. The main controller controls the drive motor 13 to drive the driving gear 15 to rotate, and then drives the tension adjusting member 4 to rotate. The tensioning member 10 moves towards the direction close to the limit disc 2 under the action of the tension adjusting member 4, driving the detection frame 8 to move towards the direction close to the limit disc 2;

[0057] S4. Monitor the moving distance L and the stroke B of the detection frame 8. If the moving distance L of the detection frame 8 > the stroke B, execute step S5; otherwise, execute step S6;

[0058] S5. The fracture detection magnet enters the detection range of the fracture detection sensor 5, and the sensor emits an alarm signal, and the device stops operating;

[0059] S6. The tension adjusting member 4 continues to move towards the direction close to the limit disc 2, tightens the flexible member 12 to the balanced state, and makes the tension of the flexible member 12 reach the preset tension.

[0060] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A tension variable speed regulating device for a flexible member, characterized in that, It includes a housing, a return spring, a tension adjusting member, a planetary gear assembly, a drive assembly, a detection assembly and a limit disc. The return spring, the tension adjusting member, the planetary gear assembly and the limit disc are coaxially arranged in the housing in sequence. The second end of the housing is threadedly connected to the limit disc. The planet carrier of the planetary gear assembly moves axially along the limit disc. The screw of the connecting member passes through the return spring from the first end of the housing and is helically connected to the threaded hole of the tension adjusting member. The return spring is located between the second groove of the housing and the circular groove at the bottom of the tension adjusting member. The bottom of the tension adjusting member is provided with a circular groove, and its outer part is a boss structure. The tension adjusting member is provided with a first gear ring, a base, a fine adjustment boss, a limit step, a second gear ring and a limit block. The base is located at the first end of the tension adjusting member. The first gear ring and the limit step are respectively arranged at both ends of the base. The fine adjustment boss and the second gear ring are respectively arranged at both ends of the middle rotating shaft of the tension adjusting member. A plurality of the limit blocks are symmetrically arranged on the rotating shaft of the tension adjusting member. The planetary gear assembly includes a planet carrier and a plurality of planetary gears. The planet carrier is coaxially sleeved on the rotating shaft of the tension adjusting member. The planetary gears are sleeved on the planet shafts on the planet carrier. The planetary gears mesh with the second gear ring on the radial outer side of the tension adjusting member and mesh with the housing on the radial inner side of the housing. The planetary gear assembly slides along the third groove inside the housing. A plurality of symmetrically arranged chutes and annular grooves are formed inside the first end of the planet carrier. A plurality of planetary gear mounting shafts are arranged at the first end of the planet carrier. A coarse adjustment boss is arranged at the second end of the planet carrier. The drive assembly includes a driving gear, a driven gear and a driving motor. The driven gear meshes with the driving gear and the first gear ring respectively. The output shaft of the driving motor is connected to the driving gear. The detection assembly includes a detection frame, a tension sensor, a fracture detection sensor and an over-tight detection sensor. The end of the short rod of the detection frame is connected to the connection head of the connecting member. The long rod of the detection frame slides in the groove at the top of the housing. The fracture detection sensor and the over-tight detection sensor are arranged in the detection sensor mounting holes at the top of the housing. The tension sensor is located in the middle of the connecting member.

2. The tension variable speed adjusting device for a flexible member according to claim 1, wherein The housing is provided with a first groove, a second groove, a third groove and a fourth groove. The first groove is of a quadrilateral structure. The second groove is circular and is provided with the return spring. The inner diameter of the second groove is larger than the outer diameter of the first gear ring in the tension adjusting member. The third groove is an internal gear ring, and the pitch circle diameter of the third groove is larger than the inner diameter of the second groove. The internal gear ring of the third groove meshes with the planet gears of the planetary gear assembly, and the planet gears slide within the third groove. The fourth groove is threadedly connected to the limit disc, and the fourth groove is larger than the root circle diameter of the third groove. On the outer side of the housing, there are provided an active gear groove and a driven gear groove. The center of the active gear groove is provided with an active gear shaft, and the center of the driven gear groove is provided with a driven gear shaft.

3. The tension variable speed adjustment device for a flexible member according to claim 1, wherein The first end of the connecting member is provided with a connecting chain, a belt and a wire rope flexible member, as well as a joint of the detection frame. The middle section of the connecting member is a special quadrilateral and is in clearance fit with the first groove of the housing.

4. The tension variable speed adjusting device for a flexible member according to claim 1, wherein, The limit block of the tension adjusting member is arranged in the annular groove through the slideway of the planet carrier, enabling the planet carrier to rotate circumferentially relative to the tension adjusting member. The coarse adjustment boss of the planet carrier is lower than the fine adjustment boss of the tension adjusting member. The tension adjusting member rotates around its central axis. While the multiple planet gears rotate around their own planet axes parallel to the central axis and revolve around the central axis, the planet carrier rotates around the central axis.

5. The tension variable speed adjusting device for a flexible member according to claim 1, characterized in that, By driving the connecting member to move axially through the tension adjusting member, the tension of the flexible member is finely adjusted; by driving the planet gears to rotate and revolve through the planet carrier, and then driving the tension adjusting member to rotate, according to the transmission ratio between the planet carrier and the second gear ring in the tension adjusting member, the tension adjusting member rotates rapidly, and then drives the connecting member to move axially, quickly adjusting the tension of the flexible member. The relationship between the torque M of the drive motor in the drive assembly and the tension F of the flexible member is: In the formula, d is the nominal diameter of the screw in the connecting member, K is the torque coefficient, X4 is the number of teeth of the first gear ring, and X2 is the number of teeth of the active gear.

6. The tension variable speed adjusting device for a flexible member according to claim 1, wherein The detection assembly further includes a fracture detection magnet and an over-tight detection magnet. The fracture detection magnet is arranged at the end of the long rod of the detection frame, and the over-tight detection magnet is arranged at the bent part of the detection frame. The over-tight detection magnet is arranged opposite to the detection surface of the over-tight detection sensor. When manually adjusting the flexible member, the detection frame moves in the direction close to the over-tight detection sensor under the drive of the connecting member. When the over-tight detection magnet enters the detection range of the over-tight detection sensor, the signal lamp of the over-tight detection sensor lights up, indicating that the tension of the flexible member reaches the preset requirement.

7. The tension variable speed adjusting device for a flexible member according to claim 1, characterized in that, The tension of the flexible component is monitored in real time through the tension sensor. When the flexible component becomes loose due to long-term operation, the tension sensor detects a decrease in the applied tension. The main controller controls the drive motor to drive the driving gear to rotate. The driving gear drives the tension adjusting member to rotate through the driven gear, driving the connecting member to move towards the direction close to the limiting disc, thereby re-tightening the flexible component to the balanced state and realizing the automatic tensioning of the flexible component.

8. The tension variable speed adjusting device for a flexible member according to claim 6, characterized in that, The detection range of the fracture detection sensor is stroke C. The fracture detection magnet is at a distance of stroke B from the detection boundary of the fracture detection sensor. There is a stroke E between the bottom of the planet carrier and the limiting disc. The first tooth ring of the tension adjusting member is at a distance of stroke F from the lower surface of the limiting cylinder, and stroke F is equal to stroke E. There is a stroke D between the first end of the connecting member and the first end of the housing, and stroke D is greater than stroke E.

9. The tension variable speed adjusting device for a flexible member according to claim 6, characterized in that, The fracture detection sensor is a Hall displacement sensor. The fracture detection magnet is arranged opposite to the detection surface of the fracture detection sensor. When a fracture fault occurs in the flexible component, the tension on the connecting member suddenly becomes zero due to the tension of the flexible component. The return spring resets and pushes the tension adjusting member and the planetary gear assembly to move towards the direction close to the limiting disc, thereby driving the connecting member and the detection frame to move. When the bottom of the planet carrier touches the limiting disc, it stops. At this time, the displacement of the fracture detection magnet is stroke E, and stroke E is greater than stroke B. The fracture detection magnet enters the detection range of the fracture detection sensor, triggering the fracture detection sensor and sending out an alarm for the fracture of the flexible component.

10. A regulating method for a tension speed change regulating device for a flexible member according to any one of claims 1 to 9, characterized in that, It includes the following steps: S1. Judge whether the flexible component is loose due to long-term operation through the tension sensor. If the flexible component 12 is loose, execute step S3; otherwise, execute step S2; S2. Keep the drive motor unchanged to maintain the tension; S3. The main controller controls the drive motor to drive the driving gear to rotate, and then drives the tension adjusting member to rotate. Under the action of the tension member, it moves towards the direction close to the limiting disc, driving the detection frame to move towards the direction close to the limiting disc; S4. Monitor the moving distance L of the detection frame and stroke B. If the moving distance L of the detection frame > stroke B, execute step S5; otherwise, execute step S6; S5. The fracture detection magnet enters the detection range of the fracture detection sensor, and the sensor sends out an alarm signal, and the device stops operating; S6. The tension adjusting member moves towards the direction close to the limiting disc, tightening the flexible component to the balanced state, so that the tension of the flexible component reaches the preset tension.

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