CN109879191B - Rope guiding device - Google Patents

Abstract

The invention discloses rope guiding equipment which comprises a base, a rope guider and a transmission device with a clutch function, wherein the rope guider is arranged on the base, the transmission device with the clutch function comprises a sleeve body, a transmission shaft and a clutch piece, the transmission shaft is rotatably arranged on the base and penetrates through the sleeve body, the clutch piece is arranged on the sleeve body, the transmission shaft and the clutch piece can be connected to drive the clutch piece to drive the sleeve body to move along the axial direction of the transmission shaft, the transmission shaft and the clutch piece can be separated, and the sleeve body is connected with the rope guider to drive the rope guider. The rope guiding equipment can avoid damage to the transmission shaft and prolong the service life.

Description

Rope guiding device

Technical Field

The invention relates to the technical field of rope guiding equipment, in particular to rope guiding equipment.

Background

The winch is a vehicle-mounted device assembled on engineering vehicles, off-road vehicles and SUV sport vehicles, is mainly used for car rescue, loading and unloading or hoisting goods and the like, and is provided with a rope guide to guide a rope so as to avoid rope disorder. In the related art, the rope guide is movable on the transmission shaft. However, when the rope is wound up in a loaded state, the transmission shaft is easily damaged when the load is greater than the strength born by the transmission shaft due to the limited strength of the transmission shaft.

Disclosure of Invention

Therefore, the invention provides the rope guiding equipment which can avoid damage to the transmission shaft and prolong the service life.

The rope guiding device according to the embodiment of the invention comprises a base; the rope guide is arranged on the base; the transmission device comprises a sleeve body, a transmission shaft and a clutch piece, wherein the transmission shaft is rotatably arranged on the base and penetrates through the sleeve body, the clutch piece is arranged on the sleeve body, the transmission shaft and the clutch piece can be connected to drive the clutch piece to drive the sleeve body to move along the axial direction of the transmission shaft, the transmission shaft and the clutch piece can be separated, and the sleeve body is connected with the rope guide to drive the rope guide.

According to the rope guiding equipment provided by the embodiment of the invention, the transmission device with the clutch function is arranged, so that the transmission shaft is prevented from being damaged, and the service life is prolonged.

In some embodiments, the rope guide apparatus further comprises a safety pin by which the sleeve is connected to the rope guide. In some embodiments, the sleeve and the rope guide are connected by a shear pin, which breaks when the load on the free end of the cable is greater than the strength to which the drive shaft is subjected, to disconnect the sleeve and the rope guide, thereby further protecting the drive shaft.

In some embodiments, the drive shaft has a helical groove on its outer peripheral surface, the clutch member has a first end and a second end, and the first end of the clutch member is engageable with and disengageable from the helical groove.

In some embodiments, the sleeve body is provided with a first hole and a second hole, the first hole penetrates through the sleeve body, the second hole is communicated with the first hole, the transmission shaft is rotatably matched in the first hole, and the clutch piece can extend into the first hole through the second hole.

In some embodiments, the central axis of the first bore is orthogonal to the central axis of the second bore, and the central axis of the second bore passes through the center of the first bore, the central axis of the drive shaft coinciding with the central axis of the first bore.

In some embodiments, the second aperture has a first end and a second end, the first end of the second aperture being in communication with the first aperture, the second end of the second aperture being provided with a cover plate through which the first end of the clutch extends into the second aperture.

In some embodiments, the clutch member includes a clutch shaft, an elastic member disposed between the cover plate and the clutch shaft to push the clutch shaft toward the transmission shaft, and an engagement plate disposed at a first end of the clutch shaft and engageable with and disengageable from the spiral groove.

In some embodiments, the engagement plate is integrally provided on the first end face of the clutch shaft, and a surface of the engagement plate facing the transmission shaft is concavely curved.

In some embodiments, the clutch shaft has a flange, the elastic member is a coil spring, the coil spring is sleeved on the clutch shaft and is located between the cover plate and the flange, a through groove is formed in the cover plate, a stop pin is arranged on the clutch shaft, the stop pin can penetrate out of the cover plate through the through groove when aligned with the through groove, the stop pin is located in the second hole when the transmission shaft and the clutch member are engaged, and the stop pin can abut against the upper surface of the cover plate to stop the clutch shaft from moving axially along the second hole when the transmission shaft and the clutch member are disengaged.

In some embodiments, the second end of the clutch shaft is provided with a clutch handle and the cover plate is threadedly engaged within the second end of the second bore.

In some embodiments, the rope guide comprises: the sliding block is provided with a central cavity which is communicated in the front-rear direction, and the sliding block is connected with the sleeve body; the upper rope guide tube is rotatably arranged in the central cavity; a lower rope guide drum rotatably provided in the central cavity, the lower rope guide drum being opposite to the upper rope guide drum and spaced apart from each other; rope-arranging wheel shafts; the rope arranging wheel is rotatably arranged on the rope arranging wheel shaft and is positioned in the central cavity; and the adjusting handle is connected with the rope arranging wheel shaft to adjust the rope arranging wheel between a tensioning position for tensioning the rope and a releasing position for releasing the rope.

In some embodiments, wherein in the tensioned position, the highest point of the rope-guiding surface of the rope-guiding wheel is higher than the lowest point of the rope-guiding surface of the upper rope-guiding drum, and in the released position, the highest point of the rope-guiding surface of the rope-guiding wheel is lower than or flush with the highest point of the rope-guiding surface of the lower rope-guiding drum.

In some embodiments, the slider has a first side wall and a second side wall opposite in a left-right direction, the first side wall is provided with a first elongated slot extending in an up-down direction, the second side wall is provided with a second elongated slot extending in the up-down direction, a first end of the rope-discharging axle is engaged with the first elongated slot and protrudes from the first elongated slot to be connected with the adjusting handle, a second end of the rope-discharging axle is engaged with the second elongated slot and protrudes from the second elongated slot to be connected with the adjusting handle, an upper end of the first elongated slot is provided with a first concave portion extending backward, an upper end of the second elongated slot is provided with a second concave portion extending backward, wherein in the tensioning position, the first end of the rope-discharging axle is engaged in the first concave portion and the second end of the rope-discharging axle is engaged in the second concave portion, and in the releasing position, the first end of the rope-discharging axle is engaged in the lower end of the first elongated slot and the second elongated slot is engaged in the lower end of the second elongated slot.

In some embodiments, the adjusting handle comprises a first side plate, a second side plate and a handle, the upper end of the first side plate and the upper end of the second side plate are connected with the handle, the lower end of the first side plate is connected with the first end of the rope-arranging wheel shaft, the lower end of the second side plate is connected with the second end of the rope-arranging wheel shaft, a first guide sliding groove extending along the length direction of the first side plate is arranged on the first side plate, a second guide sliding groove extending along the length direction of the second side plate is arranged on the second side plate, a first guide pin shaft matched with the first guide sliding groove is arranged on the outer wall surface of the first side wall of the sliding block, and a second guide pin shaft matched with the second guide sliding groove is arranged on the outer wall surface of the second side wall of the sliding block.

In some embodiments, the rope guide further includes an upper guide shaft, a lower guide shaft, a first guide roller and a second guide roller mounted on the slider at a front opening of the central cavity, the first guide roller and the second guide roller extending in an up-down direction and being spaced apart from each other in a left-right direction, the upper rope guide drum being rotatably and slidably mounted on the upper guide shaft in an axial direction of the upper guide shaft, the lower rope guide drum being rotatably and slidably mounted on the lower guide shaft in an axial direction of the lower guide shaft, the upper guide shaft and the lower guide shaft passing through the slider and the slider being slidable along the upper guide shaft and the lower guide shaft.

Drawings

FIG. 1 is a perspective schematic view of a winch according to an embodiment of the present invention.

Fig. 2 is a perspective schematic view of a winch according to an embodiment of the present invention, wherein the motor and the reel are not shown.

Fig. 3 is a schematic cross-sectional view of a rope guiding device according to an embodiment of the invention.

Fig. 4 is a schematic cross-sectional view of a transmission according to an embodiment of the invention.

Fig. 5 is an exploded schematic view of a transmission according to an embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of a transmission according to an embodiment of the invention in which a clutch member is engaged with an engagement shaft.

Fig. 7 is a schematic cross-sectional view of a transmission according to an embodiment of the invention, wherein the clutch is disengaged from the drive shaft.

Fig. 8 is a perspective schematic view of a rope guide according to an embodiment of the invention.

Fig. 9 is a schematic cross-sectional view of a rope guide according to an embodiment of the invention.

Fig. 10 is a schematic cross-sectional view of a guide shaft, a sliding sleeve, a bushing, and a guide wire barrel mated together in accordance with an embodiment of the present invention.

Fig. 11 is a perspective schematic view of a rope guide according to an embodiment of the present invention, in which a first guide pin shaft and a first guide groove are shown, and the guide shaft is not shown.

Fig. 12 is a perspective schematic view of a rope guide according to an embodiment of the present invention, in which a second guide pin shaft and a second guide groove are shown, and the guide shaft is not shown.

Fig. 13 is a perspective schematic view of a slider and guide roller mated together showing a first elongated slot and a first recess in accordance with an embodiment of the invention.

Fig. 14 is a perspective schematic view of a slider and guide roller mated together showing a second elongated slot and a second recess in accordance with an embodiment of the invention.

Fig. 15 is a schematic cross-sectional view of the winch according to the embodiment of the present invention, wherein the state of the cable L is shown when the rope is reeled in an empty load.

Fig. 16 is a schematic cross-sectional view of the winch according to the embodiment of the present invention, wherein the state of the cable L is shown when the rope is unreeled.

Fig. 17 is a schematic cross-sectional view of the winch according to the embodiment of the present invention, wherein the state of the cable L is shown when the load is reeled in.

Fig. 18 is a schematic cross-sectional view of the winch according to the embodiment of the present invention, wherein the state of the cable L is shown when the load is unreeled.

Reference numerals:

Base 1, first base plate 11, second base plate 12, rope drum 2, transmission assembly 3, gear ring 30, gear set 31, cover 310, first gear 311, second gear 312, third gear 312, fourth gear 314, fifth gear 315, connecting shaft 316, transmission 4, cover 41, first hole 410, second hole 411, transmission shaft 42, spiral groove 420, clutch 43, clutch shaft 431, flange 4310, elastic member 432, plate 433, cover 44, through groove 440, stopper pin 45, clutch handle 46, rope guide 5, slider 50, central cavity 500, first side wall 501, second side wall 502, first long groove 503, second long groove 504, first concave portion 505, second concave portion 51, upper rope guide 511, lower rope guide 512, the rope guide comprises a rope guide shaft 52, a first end 521 of the rope guide shaft, a second end 522 of the rope guide shaft, a rope guide 53, an adjusting handle 54, a first side plate 541, a first guide sliding groove 5410, a second side plate 542, a second guide sliding groove 5420, a first guide pin 544, a first guide pin 545, a handle 543, a guide roller 55, a first guide roller 551, a second guide roller 552, a guide shaft 56, an upper guide shaft 561, a lower guide shaft 562, a telescopic jacket 57, a first upper telescopic jacket 571, a second upper telescopic jacket 572, a first lower telescopic jacket 573, a second lower telescopic jacket 574, a sliding sleeve 58, an upper sliding sleeve 581, a lower sliding sleeve 582, a bushing 59, an upper bushing 591, a lower bushing 592, a safety pin 6, a motor 7 cable L, a free end L1 of the cable.

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 by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

A rope guide apparatus according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1-3, a rope guiding device according to an embodiment of the invention comprises a base 1, a transmission 4 and a rope guide 5. The susceptor 1 includes a first substrate 11 and a second substrate 12 opposed to each other in the left-right direction and spaced apart from each other.

A transmission according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 2 to 7, the transmission device 4 includes a housing 41, a transmission shaft 42, and a clutch member 43, the housing 41 is connected to the rope guide 5, and the transmission shaft 42 is rotatably provided on the base 1 and penetrates the housing 41. As shown in fig. 2, the right end of the driving shaft 42 is rotatably installed on the first base plate 11, the left end of the driving shaft 42 is rotatably installed on the second base plate 12, and the left end of the driving shaft 42 may pass through the cover 41.

The clutch member 43 is mounted on the sleeve 41, the clutch member 43 is engageable with the drive shaft 42, and the drive shaft 42 rotates and drives the clutch member 4 to move in the axial direction (left-right direction in fig. 2) of the drive shaft 41, so that the clutch member 4 drives the sleeve 41 to move in the axial direction of the drive shaft 41. The sleeve 41 is connected to the rope guide 5 to drive the rope guide 5. The drive shaft 41 is also disengageable from the clutch 43.

It will be appreciated that when the clutch member 43 is engaged with the drive shaft 42, the driving force of the drive shaft 42 may be transmitted to the rope guide 5 to drive the rope guide 5, and after the clutch member 43 is disengaged from the drive shaft 42, the driving force of the drive shaft 42 may not be transmitted to the rope guide 5.

The transmission 4 according to the embodiment of the present invention has a clutch function, and the clutch 43 is engaged with the transmission shaft 42 to drive the rope guide 5 through the transmission shaft 42. Because the strength born by the transmission shaft 42 is limited, if the transmission shaft 42 still drives the rope guide 5 when the load of the free end L1 of the cable L is large, the transmission shaft 42 is easy to be damaged, so that the clutch piece 43 and the transmission shaft 42 can be separated when the load of the free end L1 of the cable L is large, the power transmission between the rope guide 5 and the transmission shaft 42 is disconnected, the transmission shaft 42 is prevented from being damaged, and the service life of the transmission device 4 of the embodiment of the invention is prolonged.

In some embodiments, the rope guide apparatus further comprises a safety pin 6, and the sleeve 41 is connected to the rope guide 5 by the safety pin 6. According to the rope guide apparatus of the embodiment of the present invention, when the load applied by the free end L1 of the cable L is greater than the strength borne by the drive shaft 42, the safety pin 6 may be broken to break the power transmission between the drive shaft 42 and the rope guide 5, thereby further securing the safety of the drive shaft 42.

In some embodiments, the drive shaft 42 is provided with a helical groove 420 extending in the axial direction of the drive shaft 42 on the outer peripheral surface, the clutch member 43 has a first end and a second end, and the clutch member 43 is movable between an engaged position, as shown in fig. 6, in which the first end of the clutch member 43 is engaged within the helical groove 420, and a disengaged position, as shown in fig. 7, in which the first end of the clutch member 43 is disengaged from the helical groove 420. In other words, in the engaged position, the lower end of the clutch member 43 engages into the helical groove 420, and in the disengaged position, the lower end of the clutch member 43 disengages from the helical groove 420.

The spiral groove 420 may be a bi-directional spiral groove, and the clutch 43 reciprocates in the axial direction of the transmission shaft 42 when the transmission shaft 42 rotates while the lower end of the clutch 43 is engaged with the spiral groove 420. In other words, the drive shaft 42 may be configured as a bi-directional screw.

In some embodiments, the sleeve 41 has a first hole 410 and a second hole 411 therein, the first hole 410 penetrates the sleeve 41, the second hole 411 communicates with the first hole 410, the transmission shaft 42 is rotatably fitted in the first hole 410, and the clutch 43 can extend into the first hole 410 through the second hole 411.

In some particular embodiments, the second aperture 411 has a first end and a second end, the first end of the second aperture 411 being in communication with the first aperture 410, the second end of the second aperture 411 being provided with the cover 44, the first end of the clutch member 43 extending through the cover 44 into the second aperture 411. In other words, as shown in fig. 5 and 6, the first hole 410 is located at the lower end of the second hole 411, the lower end of the second hole 411 is in communication with the first hole 410, the upper end of the second hole 411 is provided with the cover 44, the lower end of the clutch member 43 extends into the second hole 411 through the cover 44, and can extend into the first hole 410 through the second hole 411 to be engaged with the transmission shaft 42.

Specifically, the cover 44 is threadedly engaged within the second end of the second aperture 411 to facilitate removal of the cover 44 from the housing 41. The central axis of the first hole 410 is orthogonal to the central axis of the second hole 411, and the central axis of the second hole 411 passes through the center of the first hole 410. As shown in fig. 5, the central axis of the first hole 410 extends in the left-right direction, the central axis of the second hole 411 extends in the up-down direction, and the central axis of the second hole 411 passes through the center of the first hole 410 when seen in the cross section of the sleeve body 41. Further, specifically, the central axis of the transmission shaft 42 coincides with the central axis of the first hole 410, that is, the direction in which the first hole 410 penetrates the sleeve 41 coincides with the axial direction of the transmission shaft 42.

In some embodiments, the clutch member 43 includes a clutch shaft 431, an elastic member 432, and an engagement plate 433, the elastic member 432 is provided at the cover plate 44 and the clutch shaft 431 to push the clutch shaft 431 toward the transmission shaft 42, and the engagement plate 433 is provided at a first end of the clutch shaft 431 and is engageable with and disengageable from the transmission shaft 42.

As shown in fig. 5-7, the clutch shaft 431 has a flange 4310 adjacent its lower end. The cross-sectional area of flange 4310 is greater than the cross-sectional area of the remainder of clutch shaft 431. The elastic member 432 is a coil spring provided between the lower surface of the cover 44 and the upper end surface of the flange 4310 and wound around the clutch shaft 431. The engagement plate 433 is located below the flange 4310 and is connected to the lower end of the clutch shaft 431. Thereby, under the elastic force of the elastic member 432, the elastic member 432 pushes the upper end surface of the flange 4310 to drive the engagement plate 433 to move downward, so that the engagement plate 433 is engaged with the spiral groove 420 of the driving shaft 42.

In some embodiments, the surface of engagement plate 433 facing drive shaft 42 is concavely curved. As shown in fig. 5 to 7, the lower surface of the engagement plate 433 has an upwardly concave arc shape to be engaged with the spiral groove 420 of the outer peripheral surface of the propeller shaft 42 better.

In a specific example, the engagement plate 433 is integrally provided on the first end surface of the clutch shaft 431. In other words, as shown in fig. 5, the engagement plate 433 is provided on the lower end surface of the clutch shaft 431 and is integrally formed with the clutch shaft 431.

In some embodiments, the cover 44 has a through slot 440 and the clutch shaft 431 has a stop pin 45. The stop pin 45 may pass out of the cover plate 44 through the through slot 440 when aligned with the through slot 440. In the engaged position where the engagement plate 433 is engaged with the spiral groove 420, the stopper pin 45 is located in the second hole 411. In the disengaged position where the engagement plate 433 is disengaged from the spiral groove 420, the stopper pin 45 abuts against the upper surface of the cap plate 44 to stop the clutch shaft 431 from moving axially along the second hole 411.

In other words, as shown in fig. 5 to 7, the cover 44 is provided with a through groove 440 penetrating the thickness of the cover 44 in the up-down direction. In the engaged position of engagement plate 433 with helical groove 420 shown in fig. 6, stop pin 45 is positioned within second aperture 411. When the engagement plate 433 is disengaged from the spiral groove 420, the clutch shaft 431 moves upward, driving the stopper pin 45 to move upward, and the stopper pin 45 is aligned with the through groove 440, whereby the stopper pin 45 can be driven upward by the clutch shaft 431 until the cover plate 44 is penetrated. After the clutch shaft 431 passes through the cover plate 44, the clutch shaft 431 is rotated to drive the stop pin 45 to rotate, so that the stop pin 45 is staggered from the through groove 440, and the stop pin 45 abuts against the upper end surface of the cover plate 44, so that the clutch shaft 431 can be prevented from moving downwards, and the disengagement state of the engagement plate 433 and the spiral groove 420 can be maintained, as shown in fig. 7.

In some specific embodiments, the second end of the clutch shaft 431 is provided with a clutch handle 46. In other words, as shown in fig. 4 to 7, the clutch handle 46 is provided at the upper end of the clutch shaft 431, and the clutch handle 46 is located above the cover 44 and the sleeve 41. The clutch shaft 431 is conveniently rotated by the clutch handle 46 and the clutch shaft 431 is moved up and down to engage and disengage the engagement plate 433 with the transmission shaft 42.

The rope guide according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 8 to 14, the rope guide 5 according to the embodiment of the present invention includes a slider 50, a rope guide drum 51, a rope reel 52, a rope reel 53, and an adjustment handle 54. The slider 50 has a central cavity 500 penetrating in the front-rear direction. The front and rear surfaces of the slider 50 are opened so that the cable L can pass through the slider 50 in the front-rear direction. The slider 50 is connected to the housing 41 so that the slider 50 moves along with the housing 41 in the axial direction of the transmission shaft 42 when the transmission shaft 42 drives the housing 41 to move in the axial direction of the transmission shaft 42.

The rope guide drum 51 includes an upper rope guide drum 511 and a lower rope guide drum 512. An upper rope guide drum 511 is rotatably provided in the central chamber 500, and a lower rope guide drum 512 is rotatably provided in the central chamber 500, the lower rope guide drum 512 being opposite to the upper rope guide drum 511 and spaced apart from each other. As shown in fig. 8 and 9, upper and lower rope guide drums 511 and 512 are each provided in central chamber 500 with their central axes parallel to each other, and upper and lower rope guide drums 511 and 512 are opposed to each other in the up-down direction and spaced apart from each other.

The rope sheave 53 is rotatably mounted on the rope sheave 52 and is located in the central chamber 500. Accordingly, when the cable L is wound on the drum 2 (rope winding) or unwound from the drum 2 (rope unwinding), the cable L is wound around the highest point of the rope discharging surface of the rope discharging wheel 53 and is passed out from the gap between the upper rope guiding drum 511 and the lower rope guiding drum 512, thereby guiding the cable L.

An adjustment handle 54 is connected to the rope pulley shaft 52 for adjusting the rope sheave 53 between a tensioning position for tensioning the rope L and a release position for releasing the rope L. In other words, the adjustment lever 54 is connected to the rope pulley shaft 52, and by adjusting the adjustment lever 54, the rope pulley shaft 52 moves the rope pulley 53, thereby moving the rope pulley 53 between the tension position for tensioning the cable L and the release position for releasing the cable L. When the rope is reeled, the rope L has a certain tension force to ensure that the rope L is tightly arranged on the winding drum 2, so that when the rope is reeled (no-load rope reeling) in a state that the free end L1 of the rope L is applied with a load, the rope reel 52 is in a tensioning position to ensure that the rope L is neatly wound on the winding drum 2.

According to the rope guide of the embodiment of the invention, the rope discharge wheel 53 can be conveniently adjusted through the adjusting handle 54, so that the rope discharge wheel 53 moves between the tensioning position for tensioning the cable L and the releasing position for releasing the cable L, thereby having simple structure, low cost and reliable adjustment.

In one example, the central axis of lower rope guide drum 512 is aligned with the central axis of upper rope guide drum 511 in the up-down direction. In other words, as shown in fig. 9, the lower rope guide drum 512 and the upper rope guide drum 511 have the same axial length, and the left end face of the lower rope guide drum 512 is aligned with the left end face of the upper rope guide drum 511 in the up-down direction, and the right end face of the lower rope guide drum 512 is aligned with the right end face of the upper rope guide drum 511 in the up-down direction. In the up-down direction, the upper rope guide drum 511 and the lower rope guide drum 512 are spaced apart by a predetermined distance, so that a gap through which the cable L passes is formed between the upper rope guide drum 511 and the lower rope guide drum 512.

In some embodiments, the rope reel 53 and the rope guide 51 are offset from each other in the front-rear direction. Specifically, as shown in fig. 8, the rope reel 53 is located behind the upper rope guide drum 511 and the lower rope guide drum 512.

It will be appreciated that the rope pulley 53 is movable in an up-and-down direction, and that the free end L1 of the rope L passes around the rope pulley 53 above the rope pulley 53 and between the upper and lower rope guide drums 511, 512. When the rope pulley 53 moves upward from the release position to the tension position, the distance between the rope pulley 53 and the upper rope guide tube 511 in the up-down direction decreases, thereby tensioning the cable L.

In some embodiments, in the tensioned position, the highest point of the rope surface of rope wheel 53 is higher than the lowest point of the rope surface of upper rope guide drum 511, and in the released position, the highest point of the rope surface of rope wheel 53 is lower than or substantially flush with the highest point of the rope surface of lower rope guide drum 512.

In some embodiments, as shown in fig. 13 and 14, the slider 50 has a first sidewall 501 and a second sidewall 502 opposite in the left-right direction. The first side wall 501 is provided with a first elongated groove 503 extending in the up-down direction, and the second side wall 502 is provided with a second elongated groove 504 extending in the up-down direction. The first end 521 of the rope pulley shaft 52 is engaged with the first elongated slot 503 and extends from the first elongated slot 503 to connect with the adjustment handle 54, and the second end 522 of the rope pulley shaft 52 is engaged with the second elongated slot 504 and extends from the second elongated slot 504 to connect with the adjustment handle 54.

The upper end of the first elongated slot 503 is provided with a first recess 505 extending rearward, and the upper end of the second elongated slot 504 is provided with a second recess 506 extending rearward. In the tensioned position, a first end of the rope pulley shaft 52 fits within the first recess 505 and a second end of the rope pulley shaft 52 fits within the second recess 506. In the release position, a first end of the rope pulley shaft 52 fits within a lower end of the first elongated slot 503 and a second end of the rope pulley shaft 52 fits within a lower end of the second elongated slot 504.

It will be appreciated that, as shown in fig. 11-14, with the first end 521 of the rope pulley shaft 52 positioned in the first recess 505 and the second end 522 of the rope pulley shaft 52 positioned in the second recess 506, the rope pulley 53 is in a tensioned position to tension the rope L so that when the free end L1 of the rope L is not loaded (empty condition), the rope L is not slack and therefore not derailed as the rope pulley 53 tensions the rope when the rope L is wound onto the drum 2 (rope winding).

In some embodiments, the adjustment handle 54 includes a first side plate 541, a second side plate 542, and a grip 543. The upper end of the first side plate 541 and the upper end of the second side plate 542 are connected to the handle 543, the lower end of the first side plate 541 is connected to the first end 521 of the rope pulley shaft 52, and the lower end of the second side plate 542 is connected to the second end 522 of the rope pulley shaft 52. In other words, as shown in fig. 11 and 12, one end of the first side plate 541 is connected to the first end 521 of the rope reel 52, and the first side plate 541 extends upward and is disposed obliquely forward. One end of the second side plate 542 is connected to the second end 522 of the rope pulley shaft 52, and the second side plate 542 extends upward and is disposed obliquely forward. The first and second side walls 541 and 542 are opposite to each other and disposed in parallel. The handle 543 is located between the upper end of the first side plate 541 and the upper end of the second side plate 542. One end of the handle 543 is connected to the left side surface of the first side plate 541, and the other end of the handle 543 is connected to the right side surface of the second side plate 542 adjacent to the first side plate 541.

The first side plate 541 has a first guide runner 5410 extending in the longitudinal direction of the first side plate 541, and the second side plate 542 has a second guide runner 5420 extending in the longitudinal direction of the second side plate 542. The first guide pin 544 engaged with the first guide runner 5410 is provided on the outer wall surface of the first side wall 501 of the slider 50 (the right wall surface of the first side wall 501 shown in fig. 11), and the second guide pin 545 engaged with the second guide runner 5420 is provided on the outer wall surface of the second side wall 502 of the slider 50 (the left wall surface of the second side wall 501 shown in fig. 11).

In other words, as shown in fig. 11 and 12, the first guide runner 5410 penetrates the plate thickness of the first side plate 541 and extends in the longitudinal direction of the first side plate 541. The second guide chute 5420 penetrates the plate thickness of the second side plate 542 and extends in the longitudinal direction of the second side plate 542. The first guide pin 544 is located forward and upward of the lower end of the first side plate 541, and the second guide pin 545 is located forward and upward of the lower end of the second side plate 542.

Each of the first and second guide pins 544, 545 includes a base and a flange. The base of the first guide pin 544 is fitted in the first guide chute 5410, and the flange of the first guide pin 544 is located on the right side of the first side plate 541 so that the first side plate 541 moves forward and upward between the first side wall 501 and the flange of the first guide pin 544. The base of the second guide pin 545 is fitted in the second guide slide groove 5420, and the flange of the second guide pin 545 is located on the left side of the second side plate 542 so that the second side plate 542 moves forward and upward between the second side wall 502 and the flange of the second guide pin 545.

It will be appreciated that by manipulating the handle 543, the rope discharge sheave 53 can be moved between the tension position and the release position by the first side plate 541 and the second side plate 542. The base of the first guide pin 544 may be slidable within the first guide slot 503 and the second guide pin 545 may be slidable within the second guide slot 504 to guide movement of the first and second side walls 541, 542.

In some embodiments, the rope guide 5 further comprises a guide roller 55. The guide roller 55 includes a first guide roller 551 and a second guide roller 552. The first and second guide rollers 551 and 552 are mounted on the slider 50 at the front opening of the central chamber 500, and the first and second guide rollers 551 and 552 extend in the up-down direction and are spaced apart from each other in the left-right direction.

In other words, as shown in fig. 11 to 14, the first guide roller 551 and the second guide roller 552 each extend in the up-down direction and are spaced apart in the left-right direction. The upper ends of the first guide roller 551 and the second guide roller 552 are mounted on the top wall of the slider 50, and the lower ends of the first guide roller 551 and the second guide roller 552 are mounted on the bottom wall of the slider 50. The first guide roller 551 and the second guide roller 552 are each rotatable about their respective axes. The distance by which the first and second guide rollers 551 and 552 are spaced apart in the left-right direction should be equal to or less than the dimension of the central cavity 500 of the slider 50 in the left-right direction (i.e., the distance between the inner surface of the first sidewall 501 and the inner surface of the second sidewall 502) so that the first and second guide rollers 551 and 552 guide the cable L therebetween, which does not contact and rub against the first and second sidewalls 501 and 502 of the slider 50.

In some embodiments, the rope guide 5 further comprises a guide shaft 56, the guide shaft 56 comprising an upper guide shaft 561 and a lower guide shaft 562. The upper rope guide cylinder 511 is rotatably and slidably mounted on the upper guide shaft 561 in the axial direction of the upper guide shaft 561, and the lower rope guide cylinder 512 is rotatably and slidably mounted on the lower guide shaft 562 in the axial direction of the lower guide shaft 562. The upper and lower guide shafts 561 and 562 pass through the slider 50 and the slider 50 is slidable along the upper and lower guide shafts 561 and 562.

In other words, as shown in fig. 8 to 10, the upper guide shaft 561 and the lower guide shaft 562 extend in the left-right direction, respectively, so that the upper guide shaft 561 and the lower guide shaft 562 are parallel to each other. The upper guide shaft 561 passes through the first sidewall 501, the upper guide rope drum 511, and the second sidewall 502 in order. The lower guide shaft 562 sequentially passes through the first sidewall 501, the lower guide rope drum 512, and the second sidewall 502. As shown in fig. 1 and 2, one end of the upper guide shaft 561 is mounted on the first substrate 11, and the other end of the upper guide shaft 561 sequentially passes through the first sidewall 501, the upper rope guide cylinder 511, and the second sidewall 502 and is mounted on the second substrate 12. One end of the lower guide shaft 562 is also mounted on the first substrate 11, and the other end of the lower guide shaft 562 sequentially passes through the first sidewall 501, the lower guide rope drum 512 and the second sidewall 502 and is mounted on the second substrate 12, and the lower guide shaft 562 is positioned below the upper guide shaft 561.

In some embodiments, the rope guide 5 further includes a telescoping sheath 57. The telescoping sheath 57 includes first and second upper telescoping sheaths 571 and 572 and first and second lower telescoping sheaths 573 and 574. A first upper telescopic sheath 571 is sleeved on a first end of the upper guide shaft 561 (a left end of the upper guide shaft 561 shown in fig. 1), and a second upper telescopic sheath 572 is sleeved on a second end of the upper guide shaft 561 (a right end of the upper guide shaft 561 shown in fig. 1);

A first lower telescoping sheath 573 is sleeved over a first end of lower guide shaft 562 (the left end of lower guide shaft 562 shown in fig. 1) and a second lower telescoping sheath 574 is sleeved over a second end of lower guide shaft 562 (the right end of lower guide shaft 562 shown in fig. 1).

In other words, the upper guide shaft 561 is sleeved with two telescopic sheaths, the sheaths are located at the left and right sides of the slider 50, and the lower guide shaft 562 is also sleeved with two telescopic sheaths, the sheaths are located at the left and right sides of the slider 50. When the slider 50 is adjacent to the left ends of the upper guide shaft 561 and the lower guide shaft 562, the sheath located at the left side of the slider 50 is compressed, and the sheath located at the right side of the slider 50 is stretched out, as shown in fig. 1.

In some embodiments, the rope guide 5 further includes a sliding sleeve 58. The sliding sleeve 58 includes an upper sliding sleeve 581 and a lower sliding sleeve 582. The upper and lower sliding sleeves 581, 582 extend through the slider 50, respectively, with the upper and lower sliding sleeves 581, 582 being opposed and spaced apart from one another. In other words, as shown in fig. 9, the upper and lower sliding sleeves 581 and 582 each extend in the left-right direction and are spaced apart from each other in the up-down direction, and one end of the upper sliding sleeve 581 and one end of the lower sliding sleeve 582 are respectively mounted on the first side wall 501, and the other end of the upper sliding sleeve 581 and the other end of the lower sliding sleeve 582 are respectively mounted on the second side wall 502.

The upper rope guide 511 is rotatably fitted over the upper sliding sleeve 581. The upper guide shaft 561 passes through the upper sliding sleeve 581 and the upper sliding sleeve 581 is slidable along the axial direction of the upper guide shaft 561, and the lower guide rope drum 512 is rotatably sleeved on the lower sliding sleeve 582. The lower guide shaft 562 passes through the lower slide sleeve 582 and the lower slide sleeve 582 is slidable along the axial direction of the lower guide shaft 562.

In other words, as shown in fig. 9, the upper slide sleeve 581 is fitted over the upper guide shaft 561 and is slidable in the left-right direction with respect to the upper guide shaft 561. The upper rope guide 511 is fitted over the upper sliding sleeve 581 and is rotatable with respect to the upper sliding sleeve 581. The lower slide sleeve 582 is sleeved on the lower guide shaft 562 and is slidable in the left-right direction with respect to the lower guide shaft 562. The lower rope drum 512 is fitted over the lower runner 582 and is rotatable relative to the lower runner 582.

In one example, the rope guide 5 further comprises a bushing 59. The bushing 59 includes an upper bushing 591 and a lower bushing 592. The upper and lower bushings 591, 592 are opposed to and spaced apart from one another. The upper bushing 591 is fitted in the upper sliding sleeve 581, the upper guide shaft 561 passes through the upper bushing 591 and the upper bushing 591 is slidable with respect to the axial direction of the upper guide shaft 561. The lower bushing 592 fits within the lower slide 582, the lower guide shaft 562 passes through the lower bushing 592 and the lower bushing 592 is slidable relative to the lower guide shaft 562.

As shown in fig. 9, there are two upper bushings 591, and the two upper bushings 591 are arranged at intervals in the left-right direction, wherein one upper bushing 591 is fitted to the left end of the upper sliding sleeve 581, the other upper bushing 591 is fitted to the right end of the upper sliding sleeve 581, and the upper guide shaft 561 sequentially passes through the two upper bushings 591.

The number of the lower bushings 592 is two, and the two lower bushings 592 are spaced apart in the left-right direction, wherein one lower bushing 592 is fitted to the left end of the lower sliding sleeve 582, the other lower bushing 592 is fitted to the right end of the lower sliding sleeve 582, and the lower guide shaft 562 sequentially passes through the two upper bushings 592.

As shown in fig. 3 and 6, the sleeve 41 is connected to the slider 50 by the shear pin 6. The sliding block 50 and the sleeve body 41 are connected through the safety pin 6, after the load is greater than the strength born by the transmission shaft 42, the safety pin 6 can be broken to disconnect the power transmission between the transmission shaft 42 and the sliding block 50, and the transmission shaft 42 can not drive the sliding block 50 to move along the left and right directions any more, so that the safety of the transmission shaft 42 is ensured.

In an embodiment of the invention, as shown in fig. 1 and 2, the base 1, the reel 2, the transmission assembly 3, the transmission 4, the rope guide 5 and the motor 7 constitute a winch. The spool 2 is rotatably provided on the base 1. A rope guide 5 is provided on the base 1, and a motor 7 is connected to the drum 2 to drive the drum 2 to rotate to wind the cable L onto the drum 2 or release the cable L from the drum 2. One end of the transmission assembly 3 is connected with the motor 7, the other end of the transmission assembly 3 is connected with one end of the transmission device 4, and the other end of the transmission device 4 is connected with the rope guide 5, so that the motor 7 drives the rope guide 5 through the transmission assembly 3 and the transmission device 4 in sequence.

According to the winch provided by the embodiment of the invention, the rope guide 5 is an active rope guide, namely, the rope guide is driven by the motor 7, so that the rope guide effect is good. In addition, the winding drum 2 and the rope guide 5 are driven by the same motor 7, and the rope guide 5 does not need a separate power source, so that the number of parts is reduced, the structure and control are simplified, and the cost is reduced.

In some embodiments, the transmission assembly 3 is a gear transmission. The transmission assembly 3 includes a gear ring 30 mounted on the spool 2 and a gear set 31 engaged with the gear ring 30, the gear set 31 being connected to a transmission shaft 42 to drive the transmission shaft 42 to rotate. As shown in fig. 1-2, the left end of the winding drum 2 is connected with a motor shaft of the motor 7, and a gear ring 30 is arranged at the right end of the winding drum 2, and the gear ring 30 is an outer gear ring. The gear ring 30 is wound on the right end of the spool 2, and the right end surface of the spool 2 is provided with an end plate (not shown), the right end surface of the gear ring 30 is connected with the left end surface of the end plate, and thus when the motor 7 drives the spool 2 to rotate, the gear ring 30 rotates together with the spool 2.

In some particular embodiments, gear set 31 includes a first gear 311, a second gear 312, and a third gear 313. The first gear 311 is engaged with the ring gear 30, the second gear 312 is mounted on the same shaft as the first gear 311, the third gear 313 is mounted on the transmission shaft 42, and the third gear 313 is engaged with the second gear 312 to be driven by the second gear 312. In the description of the present invention, the terms "first," "second," and the like 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 defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In other words, as shown in fig. 2, the first gear 311 is connected to the left end of the connection shaft 316, the second gear 312 is connected to the right end of the connection shaft 316, and the third gear 313 is meshed with the second gear 312 and is connected to the right end of the transmission shaft 42. The diameter of the second gear 312 is smaller than the diameter of the first gear 311, and the diameter of the third gear 313 is larger than the diameters of the first gear 311 and the second gear 312. Thus, when the gear ring 30 rotates together with the spool 2, the first gear 311, the second gear 312, the third gear 313 and the transmission shaft 42 can be sequentially driven, and the sleeve 41 is driven by the transmission shaft 42 to move along the axial direction of the transmission shaft 42.

In one example, gear set 31 further includes fourth gear 314 and fifth gear 315. The fourth gear 314 meshes with the second gear 312, the fifth gear 315 is mounted on the same shaft as the fourth gear 314, and the fifth gear 315 meshes with the third gear 313. As shown in fig. 5, the fourth gear 314 is directly engaged with the second gear 312, the fifth gear 315 is provided on the right end surface of the fourth gear 314 and is arranged coaxially with the fourth gear 314, the diameter of the fifth gear 315 is smaller than that of the fourth gear 314, and the third gear 313 is engaged with the fifth gear 315.

The gear set 31 is sleeved in the cover 310. In other words, the first gear 311, the connecting shaft 316, the second gear 312, the third gear 313, the fourth gear 314, and the fifth gear 315 are covered by the cover 310 to protect the gear set 31.

The operation of the winch according to an embodiment of the present invention will be described below with reference to fig. 15 to 18.

When the free end L1 of the cable L is not loaded and it is desired to wind the cable L onto the drum 2 (no-load rope winding), as shown in fig. 15, the engagement plate 433 of the clutch 43 engages with the spiral groove 420 of the transmission shaft 42 to move the slider 50 in the left-right direction by the sleeve 41 driven by the transmission shaft 42. Both ends of the rope sheave 52 are located in the first recess 505 and the second recess 506, respectively, so that the rope sheave 53 is in a tension position to tension the cable L. In other words, the portion of the cable L between the drum 2 and the lower rope guide drum 512 is curved.

The rope L passes around the rope sheave 53 from above the rope sheave 53 and passes between the upper rope guide drum 511 and the lower rope guide drum 512. Since the highest point of the rope discharge surface of the rope discharge sheave 53 is higher than the lowest point of the rope guide surface of the upper rope guide tube 511, the rope L is tensioned and wound neatly around the drum 2.

When the free end L1 of the cable L is unloaded and it is desired to unwind the cable L from the drum 2 (empty payout), as shown in fig. 16, the engagement plate 433 of the clutch 43 is disengaged from the helical groove 420 of the drive shaft 42, so that the drive shaft 42 can no longer drive the slider 50. Both ends of the rope sheave 52 are located in the lower ends of the first elongated groove 503 and the second elongated groove 504, respectively, so that the rope sheave 53 is in the release position. The rope L passes around the rope discharge sheave 53 and between the upper rope guide drum 511 and the lower rope guide drum 512, and the highest point of the rope discharge surface of the rope discharge sheave 53 is lower than or substantially flush with the highest point of the rope guide surface of the lower rope guide drum 512.

When the free end L1 of the cable L is loaded and loaded (exceeding the strength borne by the drive shaft 42) and it is desired to wind the cable L onto the drum 2 (load reeling), as shown in fig. 17, the engagement plate 433 of the clutch 43 is disengaged from the helical groove 420 of the drive shaft 42, so that the drive shaft 42 can not drive the slider 50 any more, thereby protecting the safety of the drive shaft 42. Both ends of the rope sheave 52 are located in the lower ends of the first elongated groove 503 and the second elongated groove 504 so that the rope sheave 53 is in the release position. The rope L passes around the rope discharge sheave 53 and between the upper rope guide drum 511 and the lower rope guide drum 512, and the highest point of the rope discharge surface of the rope discharge sheave 53 is lower than or substantially flush with the highest point of the rope guide surface of the lower rope guide drum 512.

When the free end L1 of the cable L is loaded and loaded (exceeding the strength to which the drive shaft 42 is subjected) and the cable L is unwound from the drum 2 (load payout), as shown in fig. 18, the engagement plate 433 of the clutch 43 is disengaged from the helical groove 420 of the drive shaft 42 so that the drive shaft 42 no longer drives the slider 50 to move. Both ends of the rope sheave 52 are located in the lower ends of the first elongated groove 503 and the second elongated groove 504 so that the rope sheave 53 is in the release position. The rope L passes around the rope discharge sheave 53 and between the upper rope guide drum 511 and the lower rope guide drum 512, and the highest point of the rope discharge surface of the rope discharge sheave 53 is lower than or substantially flush with the highest point of the rope guide surface of the lower rope guide drum 512.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular 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 invention. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (11)

1. A rope guide apparatus, comprising:

A base;

the rope guide is arranged on the base;

The transmission device comprises a sleeve body, a transmission shaft and a clutch piece, wherein the transmission shaft is rotatably arranged on the base and penetrates through the sleeve body, the clutch piece is arranged on the sleeve body, the transmission shaft and the clutch piece can be engaged to drive the clutch piece to drive the sleeve body to move along the axial direction of the transmission shaft, the transmission shaft and the clutch piece can be separated, and the sleeve body is connected with the rope guide to drive the rope guide;

The clutch piece is provided with a first end and a second end, and the first end of the clutch piece can be engaged with and disengaged from the spiral groove;

The clutch part can extend into the first hole through the second hole;

The second hole is provided with a first end and a second end, the first end of the second hole is communicated with the first hole, the second end of the second hole is provided with a cover plate, and the first end of the clutch piece penetrates through the cover plate and stretches into the second hole;

The clutch member comprises a clutch shaft, an elastic member and a joint plate, wherein the elastic member is arranged between the cover plate and the clutch shaft so as to push the clutch shaft towards the transmission shaft, and the joint plate is arranged at the first end of the clutch shaft and can be engaged with and disengaged from the spiral groove.

2. The rope guide apparatus of claim 1, further comprising a safety pin through which the sleeve is connected to the rope guide.

3. The rope guide apparatus of claim 1, wherein a central axis of the first bore is orthogonal to a central axis of the second bore, and a central axis of the second bore passes through a center of the first bore, a central axis of the drive shaft coinciding with a central axis of the first bore.

4. The rope guide apparatus as claimed in claim 1, wherein the engagement plate is integrally provided on the first end face of the clutch shaft, and a surface of the engagement plate facing the transmission shaft is concavely curved.

5. The rope guide apparatus as claimed in claim 1, wherein the clutch shaft has a flange, the elastic member is a coil spring, the coil spring is sleeved on the clutch shaft and located between the cover plate and the flange, a through slot is provided on the cover plate, a stop pin is provided on the clutch shaft, the stop pin can pass through the through slot to exit the cover plate when aligned with the through slot, the stop pin is located in the second hole when the transmission shaft and the clutch member are engaged, and the stop pin can abut against an upper surface of the cover plate to stop the clutch shaft from moving axially along the second hole when the transmission shaft and the clutch member are disengaged.

6. The rope guide apparatus of claim 1, wherein the second end of the clutch shaft is provided with a clutch handle and the cover plate is threadedly engaged within the second end of the second bore.

7. The rope guide apparatus of any one of claims 1-6, wherein the rope guide comprises:

the sliding block is provided with a central cavity which is communicated in the front-rear direction, and the sliding block is connected with the sleeve body;

The upper rope guide tube is rotatably arranged in the central cavity;

a lower rope guide drum rotatably provided in the central cavity, the lower rope guide drum being opposite to the upper rope guide drum and spaced apart from each other;

rope-arranging wheel shafts;

the rope arranging wheel is rotatably arranged on the rope arranging wheel shaft and is positioned in the central cavity;

And the adjusting handle is connected with the rope arranging wheel shaft to adjust the rope arranging wheel between a tensioning position for tensioning the rope and a releasing position for releasing the rope.

8. The rope guide apparatus of claim 7, wherein in the tensioned position, a highest point of the rope discharge surface of the rope discharge wheel is higher than a lowest point of the rope guide surface of the upper rope guide drum, and in the released position, a highest point of the rope discharge surface of the rope discharge wheel is lower than or flush with a highest point of the rope guide surface of the lower rope guide drum.

9. The rope guide apparatus as recited in claim 7, wherein said slider has first and second side walls opposite in a left-right direction, said first side wall being provided with a first elongated slot extending in an up-down direction, said second side wall being provided with a second elongated slot extending in an up-down direction, a first end of said rope axle being engaged with said first elongated slot and extending from said first elongated slot for connection to said adjustment handle, a second end of said rope axle being engaged with said second elongated slot and extending from said second elongated slot for connection to said adjustment handle, an upper end of said first elongated slot being provided with a first recess extending rearward, an upper end of said second elongated slot being provided with a second recess extending rearward, wherein in said tensioned position, a first end of said rope axle is engaged in said first recess and a second end of said rope axle is engaged in said second recess, and in said released position, a first end of said rope axle is engaged in a lower end of said first elongated slot and a second end of said rope axle is engaged in a lower end of said second elongated slot.

10. The rope guide apparatus as claimed in claim 9, wherein the adjustment handle includes a first side plate, a second side plate and a handle, an upper end of the first side plate and an upper end of the second side plate being connected to the handle, a lower end of the first side plate being connected to a first end of the rope-discharging axle, a lower end of the second side plate being connected to a second end of the rope-discharging axle,

The first side plate is provided with a first guide chute extending along the length direction of the first side plate, the second side plate is provided with a second guide chute extending along the length direction of the second side plate,

The outer wall surface of the first side wall of the sliding block is provided with a first guide pin shaft matched with the first guide sliding groove, and the outer wall surface of the second side wall of the sliding block is provided with a second guide pin shaft matched with the second guide sliding groove.

11. The rope guide apparatus of claim 7, further comprising an upper guide shaft, a lower guide shaft, a first guide roller and a second guide roller mounted on the slider at a front opening of the central chamber, the first guide roller and the second guide roller extending in an up-down direction and being spaced apart from each other in a left-right direction, the upper rope drum being rotatably mounted on the upper guide shaft in an axial direction of the upper guide shaft, the lower rope drum being rotatably mounted on the lower guide shaft in an axial direction of the lower guide shaft,

The upper guide shaft and the lower guide shaft pass through the slider and the slider is slidable along the upper guide shaft and the lower guide shaft.