A winch and a lifting device

Abstract

Embodiments of the present invention provide a winch and a hoisting device, which relate to the technical field of mechanical equipment. The winch provided by the embodiments of the present invention includes a machine body, a winch drum, a rope arranging structure and a transmission structure. The transmission structure is simultaneously in transmission connection with the winch drum and the rope arranging structure to ensure the rope arranging stability of the rope arranging structure through the transmission structure and reduce the occurrence probability of rope biting. Specifically, the transmission structure includes a first gear, a second gear, a third gear, a fourth gear and a fifth gear. When power is transmitted from the winch drum to the rope arranging structure through the second gear, the fifth gear and the fourth gear, the fourth gear drives the rope arranging structure to arrange the rope in the reverse direction along the axial direction of the winch drum. Through the transmission structure, not only the effective commutation of the rope arranging structure is realized, but also the power transmission is realized through gear transmission by the transmission structure, with high reliability. Furthermore, the commutation reliability of the rope arranging structure is improved, which helps to reduce the occurrence of rope biting, thereby helping to extend the service life of the steel wire rope.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and in particular to a winch and a lifting device. Background Art

[0002] Wire rope is one of the key components indispensable for lifting operation. During the use of wire rope, the wire rope is often retracted and released through a winch to make the use of the wire rope more convenient and quick.

[0003] However, the existing winches have poor winding stability when collecting the wire rope, that is, when the wire rope on the winch drum is full of one layer and enters the next layer, the wire rope is often not arranged in order, but is tangled or piled up together, resulting in the phenomenon of rope biting. In this state, during long-term lifting, a certain point of the wire rope is easy to be worn off, which not only reduces the life of the wire rope, but also may cause safety accidents in serious cases. Summary of the invention

[0004] The purpose of the present invention includes, for example, providing a winch that can improve the problems of poor winding stability and easy rope biting during winding of the winch in the prior art.

[0005] The purpose of the present invention also includes providing a lifting device that can improve the problems of poor winding stability and easy rope biting during winding of the winch in the prior art.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] An embodiment of the present invention provides a winch, which includes a machine body, a winch drum, a rope arrangement structure and a transmission structure; the winch drum is rotatably connected to the machine body; the transmission structure includes a first gear, a second gear, a third gear, a fourth gear and a fifth gear, the first gear and the second gear are respectively transmission-connected to the winch drum, the third gear and the fourth gear are respectively transmission-connected to the transmission structure, the first gear is transmission-connected to the third gear, and both ends of the fifth gear are transmission-connected to the second gear and the fourth gear respectively;

[0008] When power is transmitted to the rope-arranging structure along the hoisting drum, the first gear and the third gear, the rope-arranging structure arranges the rope in the positive direction along the axial direction of the hoisting drum; when power is transmitted to the rope-arranging structure along the hoisting drum, the second gear, the fifth gear and the fourth gear, the rope-arranging structure arranges the rope in the reverse direction along the axial direction of the hoisting drum.

[0009] Optionally, the transmission structure further includes a first intermediate gear and a second intermediate gear, and the first intermediate gear and the second intermediate gear are both movably connected to the body;

[0010] When the first intermediate gear is located at the first preset position, the first intermediate gear meshes with the first gear and the third gear simultaneously, so that the rope arranging structure arranges the rope in the positive axial direction of the hoisting drum; when the first intermediate gear is located at the second preset position, the first intermediate gear disengages from the first gear and the third gear.

[0011] When the second intermediate gear is located at the third preset position, the second intermediate gear meshes with the second gear and the fifth gear simultaneously, so that the rope arranging structure arranges the rope in the reverse axial direction of the hoisting drum; when the second intermediate gear is located at the fourth preset position, the second intermediate gear disengages from the second gear and the fifth gear.

[0012] Optionally, the first intermediate gear is fixedly connected to the second intermediate gear; when the first intermediate gear is located at the first preset position, the second intermediate gear is located at the fourth preset position; when the first intermediate gear is located at the second preset position, the second intermediate gear is located at the third preset position.

[0013] Optionally, the transmission structure further includes a fork, which is used to toggle the first intermediate gear and the second intermediate gear, so that the first intermediate gear switches between the first preset position and the second preset position, and the second intermediate gear switches between the third preset position and the fourth preset position.

[0014] Optionally, the transmission structure further includes a hydraulic cylinder, which is in transmission connection with the fork to enable the fork to toggle the first intermediate gear and the second intermediate gear.

[0015] Optionally, the transmission structure further includes an electromagnetic directional control valve communicated with the hydraulic cylinder, and the electromagnetic directional control valve is used to control the movement direction of the piston rod of the hydraulic cylinder;

[0016] The winch further includes a first travel switch and a second travel switch arranged on both axial sides of the hoisting drum. The first travel switch and the second travel switch are respectively used to detect the rope arranging position of the rope arranging structure, and the first travel switch and the second travel switch are respectively electrically connected to the electromagnetic directional control valve to control the communication path of the electromagnetic directional control valve according to the rope arranging position.

[0017] Optionally, the transmission structure further includes a third intermediate gear fixedly connected to the second intermediate gear; when the second intermediate gear is located at the third preset position, the second intermediate gear meshes with the second gear, and the third intermediate gear meshes with the fifth gear, so that the rope arranging structure arranges the rope in the reverse direction along the axial direction of the hoisting drum; when the second intermediate gear is located at the fourth preset position, the second intermediate gear disengages from the second gear, and the third intermediate gear disengages from the fifth gear.

[0018] Optionally, the rope arranging structure includes a guide rod and a guide block, and the guide rod and the guide block are screwed together to form a lead screw mechanism; the third gear and the fourth gear are respectively used for drivingly connecting with the guide rod; a chute is formed in the guide block, and the chute is used for slidingly cooperating with the steel wire rope.

[0019] Optionally, the hoist further includes a rope pressing device connected to the machine body.

[0020] An embodiment of the present invention further provides a hoisting device. The hoisting device includes any one of the above hoists.

[0021] The beneficial effects of the hoist and the hoisting device according to the embodiments of the present invention include, for example:

[0022] An embodiment of the present invention provides a hoist, which includes a machine body, a hoisting drum, a rope arranging structure and a transmission structure. The transmission structure is simultaneously drivingly connected to the hoisting drum and the rope arranging structure to ensure the rope arranging stability of the rope arranging structure through the transmission structure and reduce the occurrence probability of rope biting. Specifically, the transmission structure includes a first gear, a second gear, a third gear, a fourth gear and a fifth gear. The first gear and the second gear are drivingly connected to the hoisting drum, the third gear and the fourth gear are drivingly connected, and the fifth gear is arranged between the second gear and the fourth gear. When the first gear is drivingly connected to the third gear and the power is transmitted from the hoisting drum through the first gear and the third gear to the rope arranging structure, the rope arranging structure arranges the rope in the forward direction along the axial direction of the hoisting drum. When the second gear meshes with the fourth gear through the fifth gear and the power is transmitted from the hoisting drum through the second gear, the fifth gear and the fourth gear to the rope arranging structure, since the fifth gear is arranged between the second gear and the fourth gear, the fourth gear rotates reversely, thereby driving the rope arranging structure to arrange the rope in the reverse direction along the axial direction of the hoisting drum. Through the transmission structure, not only the effective commutation of the rope arranging structure is realized, but also the power transmission is realized through gear transmission, and the reliability is high. Furthermore, the commutation reliability of the rope arranging structure is improved, which helps to reduce the occurrence of rope biting, and thus helps to extend the service life of the steel wire rope.

[0023] An embodiment of the present invention further provides a hoisting device, which includes the above-mentioned winch. Since this hoisting device includes the above-mentioned winch, it also has the beneficial effects of high commutation reliability, being able to reduce the occurrence of rope biting, and helping to extend the service life of the steel wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the winch provided by the embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the transmission structure in the winch provided by the embodiment of the present invention;

[0027] Figure 3 For Figure 1 It is a partially enlarged schematic diagram of part III;

[0028] Figure 4 It is a schematic diagram of the winch provided by the embodiment of the present invention when the first intermediate gear is in the second preset position.

[0029] Reference numerals: 100 - winch; 110 - winch drum; 111 - drive shaft; 112 - cylinder body; 113 - rope storage groove; 114 - first wall surface; 115 - second wall surface; 120 - transmission structure; 121 - first gear; 122 - second gear; 123 - first connecting cylinder; 124 - first intermediate gear; 125 - second intermediate gear; 126 - third intermediate gear; 127 - second connecting cylinder; 128 - third gear; 129 - fourth gear; 131 - fifth gear; 132 - fork; 133 - hydraulic cylinder; 134 - electromagnetic reversing valve; 140 - rope arranging structure; 141 - guide rod; 142 - guide block; 143 - chute; 151 - first travel switch; 152 - second travel switch; 153 - machine body; 154 - steel wire rope; 155 - rope pressing device; 156 - winch pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0031] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed invention, but is merely representative of selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0033] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the inventive product is customarily placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0034] In addition, terms such as "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0035] It should be noted that, without conflict, the features in the embodiments of the present invention may be combined with each other.

[0036] Figure 1 The overall structural schematic diagram of the winch 100 provided for this embodiment is shown. Please refer to Figure 1 In this embodiment, a winch 100 is provided. Correspondingly, a hoisting device (not shown in the figure) is provided.

[0037] The hoist 100 includes a machine body 153, a hoisting drum 110, a rope arranging structure 140, and a transmission structure 120. The transmission structure 120 is simultaneously in transmission connection with the hoisting drum 110 and the rope arranging structure 140 to ensure the rope arranging stability of the rope arranging structure 140 through the transmission structure 120 and reduce the occurrence probability of rope biting. Specifically, the transmission structure 120 includes a first gear 121, a second gear 122, a third gear 128, a fourth gear 129, and a fifth gear 131. The first gear 121 and the second gear 122 are in transmission connection with the hoisting drum 110. The third gear 128 and the fourth gear 129 are in transmission connection. The fifth gear 131 is arranged between the second gear 122 and the fourth gear 129. When the first gear 121 is in transmission connection with the third gear 128 and the power is transmitted from the hoisting drum 110 to the rope arranging structure 140 through the first gear 121 and the third gear 128, the rope arranging structure 140 arranges the rope in the positive axial direction of the hoisting drum 110. When the second gear 122 is in meshing transmission with the fourth gear 129 through the fifth gear 131 and the power is transmitted from the hoisting drum 110 to the rope arranging structure 140 through the second gear 122, the fifth gear 131, and the fourth gear 129, since the fifth gear 131 is arranged between the second gear 122 and the fourth gear 129, the fourth gear 129 rotates in the reverse direction, thereby driving the rope arranging structure 140 to arrange the rope in the reverse axial direction of the hoisting drum 110. Through the transmission structure 120, not only the effective commutation of the rope arranging structure 140 is realized, but also the transmission structure 120 realizes power transmission through gear transmission, with high reliability. Furthermore, the commutation reliability of the rope arranging structure 140 is improved, which helps to reduce the occurrence of rope biting, thereby helping to extend the service life of the steel wire rope 154.

[0038] The lifting device includes the above-mentioned hoist 100. At the same time, the lifting device further includes a body (not shown in the figure). By specifically setting the body structure, the lifting device can perform corresponding functions. For example, the body structure is set as the structure of a crane except for the hoist 100, or the structure of the body is set as the structure of a rotary drilling rig except for the hoist 100.

[0039] The hoist 100 provided in this embodiment will be further described below:

[0040] Figure 2 It is a schematic structural diagram of the transmission structure 120 in the hoist 100 provided in this embodiment. Please refer to Figure 1 and Figure 2In the present embodiment, the hoisting drum 110 includes a cylinder body 112 and a driving shaft 111 disposed at one end of the cylinder body 112 . The cylinder 112 is cylindrical, and a rope storage groove 113 is provided on the outer peripheral surface of the cylinder 112. The rope storage groove 113 extends along the axis of the cylinder 112. The rope storage groove 113 has a first wall 114 and a second wall 115 which are arranged opposite to each other along the axial direction of the cylinder 112. The steel wire rope 154 is limited by the first wall 114 and the second wall 115, that is, when the rope arrangement structure 140 drives the steel wire rope 154 to wind around the first wall 114, the rope arrangement structure 140 changes direction to drive the steel wire rope 154 to wind in a direction close to the second wall 115; when the steel wire rope 154 is wound around the second wall 115, the rope arrangement structure 140 changes direction to drive the steel wire rope 154 to wind in a direction close to the first wall 114, so that the steel wire rope 154 is arranged in multiple layers in the rope storage groove 113, thereby increasing the rope storage capacity of the winch drum 110. The drive shaft 111 is fixedly connected to one axial end of the cylinder 112 and is coaxially arranged with the cylinder 112. During installation, the drive shaft 111 is rotatably connected to the body 153.

[0041] Furthermore, the winch 100 further includes a winch pump 156 disposed at one end of the drive shaft 111 away from the cylinder 112, and the winch pump 156 is in transmission connection with the drive shaft 111, thereby driving the cylinder 112 to rotate through the drive shaft 111, so as to achieve the retraction and extension of the wire rope 154 on the cylinder 112. It can be understood that in other embodiments, other components can also be used to drive the winch drum 110 to rotate according to needs, such as a motor.

[0042] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the transmission structure 120 further includes a first connecting cylinder 123, and the two ends of the first connecting cylinder 123 are respectively fixedly connected to the first gear 121 and the second gear 122, thereby forming a two-linked gear set. The first connecting cylinder 123 is sleeved on the driving shaft 111, and the first connecting cylinder 123 is fixedly connected to the driving shaft 111. When the driving shaft 111 rotates under the drive of the hoisting pump 156, the first connecting cylinder 123 rotates synchronously with the driving shaft 111, thereby driving the first gear 121 and the second gear 122 to rotate synchronously with the hoisting drum 110, thereby realizing the transmission connection between the first gear 121 and the second gear 122 and the hoisting drum 110.

[0043] Figure 3 for Figure 1 The enlarged schematic diagram of the local structure at point III in the middle. Please refer to Figures 1-3, in this embodiment, the rope arranging structure 140 includes a guide rod 141 and a guide block 142. The guide rod 141 is rotatably connected to the machine body 153. The guide rod 141 is screwed with the guide block 142 to form a lead screw mechanism. Thus, during the rotation of the guide rod 141, the guide block 142 moves along the axial direction of the guide rod 141. By changing the rotation direction of the guide rod 141, the movement direction of the guide block 142 can be changed, so that the steel wire rope 154 is wound around the hoisting drum 110 in layers. A chute 143 is formed on the guide block 142. During winding, the steel wire rope 154 is slidably clamped in the chute 143, so that the steel wire rope 154 is arranged and wound along the axial direction of the hoisting drum 110 under the drive of the guide block 142.

[0044] The third gear 128 and the fourth gear 129 are respectively fixedly connected to the guide rod 141, so as to drive the guide rod 141 to rotate through the third gear 128 and the fourth gear 129. Specifically, the transmission structure 120 further includes a transmission rod rotatably connected to the machine body 153. The fifth gear 131 is fixedly connected to the transmission rod, and the fifth gear 131 is used to mesh with the fourth gear 129. When the first gear 121 meshes with the third gear 128 and the power is transmitted from the hoisting drum 110 along the first gear 121 and the third gear 128 to the guide rod 141, the guide rod 141 rotates forward, so as to drive the guide block 142 to arrange the rope forward. It should be noted that in this embodiment, "arranging the rope forward" means arranging the rope along the direction from the first wall surface 114 to the second wall surface 115. When the fifth gear 131 meshes with the second gear 122 and the fourth gear 129 at the same time and the power is transmitted from the hoisting drum 110 along the second gear 122, the fifth gear 131 and the fourth gear 129 to the guide rod 141, the guide rod 141 rotates reversely, so as to drive the guide block 142 to arrange the rope reversely. It should be noted that in the description of this embodiment, "arranging the rope reversely" means arranging the rope along the direction from the second wall surface 115 to the first wall surface 114.

[0045] Figure 4 is a schematic structural diagram of the winch 100 provided in this embodiment when the first intermediate gear 124 is in the second preset position. Please refer to Figure 1 , Figure 2 and Figure 4 . Further, in order to realize the switching of the transmission path of the transmission structure 120, the transmission structure 120 further includes a first intermediate gear 124 and a second intermediate gear 125. The first intermediate gear 124 and the second intermediate gear 125 are respectively movably connected to the machine body 153. The first intermediate gear 124 can be switched between a first preset position and a second preset position, and the second intermediate gear 125 can be switched between a third preset position and a fourth preset position. When the first intermediate gear 124 is located at the first preset position (such as Figure 2When the first intermediate gear 124 is in the first preset position (as shown), the first intermediate gear 124 meshes with the first gear 121 and the third gear 128 simultaneously, so that power is transmitted to the third gear 128 through the first intermediate gear 124, and then the guide rod 141 is driven to rotate by the third gear 128, so that the rope arranging structure 140 arranges the rope forward. When the first intermediate gear 124 is in the second preset position (such as Figure 4 shown), the first intermediate gear 124 disengages from both the first gear 121 and the third gear 128, and the power transmission between the first gear 121 and the third gear 128 is interrupted. When the second intermediate gear 125 is in the third preset position (such as Figure 4 shown), the second intermediate gear 125 meshes with the second gear 122 and the fifth gear 131 simultaneously, so that power is transmitted to the fourth gear 129 through the second intermediate gear 125 and the fifth gear 131, and then the guide rod 141 is driven to rotate by the fourth gear 129, so that the rope arranging structure 140 arranges the rope backward. When the second intermediate gear 125 is in the fourth preset position (such as Figure 2 shown), the second intermediate gear 125 disengages from both the second gear 122 and the fifth gear 131, and the power transmission between the second gear 122 and the fourth gear 129 is interrupted.

[0046] It should be noted that the structure for realizing the switching of the power transmission path is not limited here. It can be understood that in other embodiments, each gear can also be set according to requirements. For example, the third gear 128 and the fourth gear 129 are set to be movably connected to the guide rod 141, so that the third gear 128 and the fourth gear 129 can switch between the states of power transmission and interruption of transmission with the guide rod 141.

[0047] Furthermore, the first intermediate gear 124 and the second intermediate gear 125 are fixedly connected, thus ensuring the synchronism of the position switching of the first intermediate gear 124 and the second intermediate gear 125. When the first intermediate gear 124 is in the first preset position, the second intermediate gear 125 is in the fourth preset position, so that the guide rod 141 rotates forward to realize forward rope arrangement; when the first intermediate gear 124 is in the second preset position, the second intermediate gear 125 is in the third preset position, so that the guide rod 141 rotates backward to realize backward rope arrangement. Specifically, the transmission structure 120 further includes an intermediate shaft connected to the machine body 153. At the same time, the transmission structure 120 further includes a second connecting cylinder 127. The second connecting cylinder 127 is sleeved on the intermediate shaft and can slide axially along the intermediate shaft relative to the intermediate shaft. The first intermediate gear 124 and the second intermediate gear 125 are arranged at intervals on the second connecting cylinder 127 and are respectively fixedly connected to the second connecting cylinder 127, so that the first intermediate gear 124 and the second intermediate gear 125 switch positions synchronously.

[0048] Further, for the convenience of arranging each gear, the transmission structure 120 further includes a third intermediate gear 126 fixedly connected to the second intermediate gear 125. When the second intermediate gear 125 is located at the third preset position, the third intermediate gear 126 meshes with the fifth gear 131. When the second intermediate gear 125 is located at the fourth preset position, the third intermediate gear 126 disengages from the fifth gear 131. Specifically, the third intermediate gear 126 is fixedly connected to the second connecting cylinder 127, thereby forming a triple gear set structure, and the third intermediate gear 126 is arranged at an interval from the second intermediate gear 125.

[0049] It should be noted that the position of the third intermediate gear 126 is not limited here. It can be understood that in other embodiments, the third intermediate gear 126 can also be set to be fixedly connected to the fifth gear 131 according to requirements. When the second intermediate gear 125 is located at the third preset position, the second intermediate gear 125 meshes with the third intermediate gear 126 to achieve power transmission.

[0050] Further, the transmission structure 120 further includes a fork 132, which moves the first intermediate gear 124 and the second intermediate gear 125 by the fork 132, so that the first intermediate gear 124 switches between the first preset position and the second preset position, and the second intermediate gear 125 switches between the third preset position and the fourth preset position. It should be noted that in this embodiment, the first intermediate gear 124 and the second intermediate gear 125 are moved to switch positions by the fork 132. It can be understood that in other embodiments, other structures can also be used, such as setting an electric push rod fixed to the second connecting cylinder 127, and the second connecting cylinder 127 is pushed by the electric push rod to move, so as to achieve the position switching of the first intermediate gear 124 and the second intermediate gear 125.

[0051] Further, the transmission structure 120 further includes a hydraulic cylinder 133, and the fork 132 is fixedly connected to the piston rod of the hydraulic cylinder 133, so as to drive the fork 132 to move through the movement of the piston rod of the hydraulic rod, and further achieve the position switching of the first intermediate gear 124 and the second intermediate gear 125.

[0052] Further, the transmission structure 120 further includes an electromagnetic directional control valve 134 communicated with the hydraulic cylinder 133. The change of the oil pressure in the two oil cavities in the hydraulic cylinder 133 is realized through the electromagnetic directional control valve 134, so as to control the movement direction of the piston rod. The winch 100 further includes a first travel switch 151 and a second travel switch 152 arranged on both axial sides of the winch drum 110. The first travel switch 151 and the second travel switch 152 are respectively used to detect the rope arranging position of the rope arranging structure 140, and the first travel switch 151 and the second travel switch 152 are respectively electrically connected to the electromagnetic directional control valve 134, so that the electromagnetic directional control valve 134 can control the movement of the fork 132 according to the rope arranging position. Specifically, the first travel switch 151 is correspondingly arranged at the first wall surface 114, and the second travel switch 152 is correspondingly arranged at the second wall surface 115. When the first travel switch 151 detects that the guide block 142 moves to the first wall surface 114, the electromagnetic directional control valve 134 controls the movement of the piston rod through the oil pressure, and then makes the first intermediate gear 124 move from the second preset position to the first preset position through the fork 132. The guide rod 141 is driven by the third gear 128, so as to make the rope arranging structure 140 arrange the rope forward; when the second travel switch 152 detects that the guide block 142 moves to the second wall surface 115, the electromagnetic directional control valve 134 controls the movement of the piston rod through the oil pressure, and then makes the second intermediate gear 125 move from the fourth preset position to the third preset position through the fork 132. The guide rod 141 is driven by the fourth gear 129, so as to make the rope arranging structure 140 arrange the rope in reverse.

[0053] Meanwhile, by setting the number of teeth of each gear, it is ensured that when the winch drum 110 rotates one circle, the distance that the guide block 142 moves along the axial direction of the guide rod 141 is the same as the diameter of the steel wire rope 154, so as to make the winding of the steel wire rope 154 more beautiful and reliable. Specifically, for the sake of simplifying the design, the number of teeth of the first gear 121 and the second gear 122 is the same. When the power is transmitted along the second gear 122, the second intermediate gear 125, the third intermediate gear 126, the fifth gear 131 and the fourth gear 129, the transmission from the second gear 122 to the second intermediate gear 125 is a deceleration process, the transmission from the second intermediate gear 125 to the third intermediate gear 126 is an isometric process, and the transmission from the third intermediate gear 126 to the fourth gear 129 through the fifth gear 131 is an acceleration process. Thus, it is ensured that when the rotational speed of the winch drum 110 is constant and the power is transmitted along different paths, the rotational speed values of the third gear 128 and the fourth gear 129 are the same, so as to ensure that the rope arranging speed values during the forward and reverse rope arranging of the rope arranging structure 140 are equal and the rope arranging is stable.

[0054] Please refer to Figure 1 , in this embodiment, the winch 100 further includes a rope presser 155 connected to the machine body 153, which makes the winding and unwinding movement of the steel wire rope 154 more stable and reliable.

[0055] A hoist 100 provided according to this embodiment, the working principle of the hoist 100:

[0056] During use, the hoist pump 156 drives the hoist drum 110 to rotate, thereby driving the first gear 121 and the second gear 122 to rotate. The first intermediate gear 124 is located at the first preset position, so that the first gear 121 transmits power to the third gear 128 through the first intermediate gear 124, and then drives the guide rod 141 to rotate forward for forward rope laying. When the second travel switch 152 detects that the guide block 142 moves to the second wall surface 115, the electromagnetic directional valve 134 switches the oil supply path, and the piston rod drives the fork 132 to move so that the second intermediate gear 125 moves to the third preset position, and the power transmission between the first gear 121 and the third gear 128 is interrupted. The power of the second gear 122 is transmitted to the fifth gear 131 through the second intermediate gear 125 and the third intermediate gear 126, and drives the fourth gear 129 to rotate through the fifth gear 131, and then drives the guide rod 141 to rotate reversely for reverse rope laying until the first travel switch 151 detects that the guide block 142 moves to the first wall surface 114, and the electromagnetic directional valve 134 switches the oil supply path, and the first intermediate gear 124 is moved to the first preset position through the fork 132.

[0057] A hoist 100 provided in this embodiment has at least the following advantages:

[0058] An embodiment of the present invention provides a hoist 100, which drives the guide rod 141 to rotate through a transmission structure 120 composed of multiple gears to realize the rope laying operation. At the same time, the transmission structure 120 changes the rotation direction of the guide rod 141 by changing the power transmission path, thereby realizing the switching of the rope laying direction. The rope laying process is stable and reliable, which can effectively reduce the occurrence of rope biting, and then helps to improve the service life of the steel wire rope 154 and avoid safety accidents.

[0059] This embodiment also provides a lifting device, which includes the above-mentioned hoist 100, so it also has the beneficial effects of stable and reliable rope laying process, reducing the occurrence of rope biting, improving the service life of the steel wire rope 154, and avoiding safety accidents.

[0060] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A hoist, characterized in that, it includes a machine body, a hoisting drum, a rope arranging structure and a transmission structure; the hoisting drum is rotatably connected to the machine body; the transmission structure includes a first gear, a second gear, a third gear, a fourth gear and a fifth gear, the first gear and the second gear are respectively in transmission connection with the hoisting drum, the third gear and the fourth gear are respectively in transmission connection with the transmission structure, the first gear is in transmission connection with the third gear, and both ends of the fifth gear are respectively in transmission connection with the second gear and the fourth gear; When the power is transmitted to the rope arranging structure along the hoisting drum, the first gear and the third gear, the rope arranging structure arranges the rope in the positive axial direction of the hoisting drum; when the power is transmitted to the rope arranging structure along the hoisting drum, the second gear, the fifth gear and the fourth gear, the rope arranging structure arranges the rope in the reverse axial direction of the hoisting drum; The transmission structure further includes a first intermediate gear and a second intermediate gear, and both the first intermediate gear and the second intermediate gear are movably connected to the machine body; When the first intermediate gear is in the first preset position, the first intermediate gear is simultaneously engaged with the first gear and the third gear, so that the rope arranging structure arranges the rope in the positive axial direction of the hoisting drum; when the first intermediate gear is in the second preset position, the first intermediate gear disengages from the first gear and the third gear; When the second intermediate gear is in the third preset position, the second intermediate gear is simultaneously engaged with the second gear and the fifth gear, so that the rope arranging structure arranges the rope in the reverse axial direction of the hoisting drum; when the second intermediate gear is in the fourth preset position, the second intermediate gear disengages from the second gear and the fifth gear; The transmission structure further includes a third intermediate gear fixedly connected to the second intermediate gear; when the second intermediate gear is in the third preset position, the second intermediate gear is engaged with the second gear, and the third intermediate gear is engaged with the fifth gear, so that the rope arranging structure arranges the rope in the reverse axial direction of the hoisting drum; When the second intermediate gear is in the fourth preset position, the second intermediate gear disengages from the second gear, and the third intermediate gear disengages from the fifth gear.

2. The hoist according to claim 1, characterized in that, the first intermediate gear is fixedly connected to the second intermediate gear; when the first intermediate gear is in the first preset position, the second intermediate gear is in the fourth preset position; when the first intermediate gear is in the second preset position, the second intermediate gear is in the third preset position.

3. The hoist according to claim 2, characterized in that, the transmission structure further includes a shift fork, and the shift fork is used to toggle the first intermediate gear and the second intermediate gear, so that the first intermediate gear switches between the first preset position and the second preset position, and the second intermediate gear switches between the third preset position and the fourth preset position.

4. The hoist according to claim 3, It is characterized in that The transmission structure further includes a hydraulic cylinder, which is transmission-connected to the shift fork so that the shift fork shifts the first intermediate gear and the second intermediate gear.

5. The winch according to claim 4, It is characterized in that The transmission structure further comprises an electromagnetic reversing valve connected to the hydraulic cylinder, wherein the electromagnetic reversing valve is used to control the movement direction of the piston rod of the hydraulic cylinder; The winch also includes a first travel switch and a second travel switch arranged on both axial sides of the winch drum, the first travel switch and the second travel switch are respectively used to detect the rope-arranging position of the rope-arranging structure, and the first travel switch and the second travel switch are respectively electrically connected to the electromagnetic reversing valve to control the communication path of the electromagnetic reversing valve according to the rope-arranging position.

6. The winch according to any one of claims 1 to 5, It is characterized in that The rope arrangement structure includes a guide rod and a guide block, and the guide rod and the guide block are screwed together to form a screw mechanism; the third gear and the fourth gear are respectively used for transmission connection with the guide rod; a slide groove is provided on the guide block, and the slide groove is used for sliding cooperation with the wire rope.

7. The winch according to any one of claims 1 to 5, It is characterized in that The winch also includes a rope presser connected to the machine body.

8. A lifting device, It is characterized in that The lifting device comprises a winch as described in any one of claims 1-7.

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