Lifting device of double-winding-drum electric lifting hoist

Abstract

The utility model provides a lifting device of a double-winding-drum electric lifting hoist, belongs to the technical field of lifting of electric lifting hoists, and solves the technical problems that the lifting distance of the existing lifting device of the electric lifting hoist is limited, the service life of a steel rope is short, the stability is poor during lifting and the like. Comprising a supporting mechanism, a lifting hoist and two guide mechanisms, two lifting double-rope winding drum mechanisms are arranged in the supporting mechanism, two steel ropes are wound between the two lifting double-rope winding drum mechanisms, and two steel rope take-up mechanisms are arranged at the corresponding positions of each lifting double-rope winding drum mechanism; a lifting motor and two switching mechanisms are fixed to the supporting mechanism, a rolling push rod mechanism is arranged on the supporting mechanism in a rolling mode, a wire tightening mechanism is arranged at the lower end of the rolling push rod mechanism, and two guide mechanisms are arranged on two steel ropes in a rolling mode respectively and fixed to the upper portion of a lifting hoist. According to the utility model, the lifting distance is longer, the lifting efficiency is higher, the service life of the steel rope is longer, and the lifting stability is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric hoisting hoist, and relates to a double-drum hoisting device, in particular to a double-drum electric hoisting hoisting device. Background Art

[0002] An electric hoist is a type of lifting equipment widely used in industries such as industry, construction, and mining. Its operating principle is to use an electric motor to drive a gear or chain transmission system, which in turn drives a wire rope or chain to raise or lower the load. An electric hoist is primarily composed of a motor, a transmission mechanism, a drum, and a wire rope (or chain). The motor is the power source, which is transmitted to the drum via the transmission mechanism. The drum then uses the wire rope (or chain) to lift or lower the load.

[0003] When the motor starts, it transmits power to the drum through the transmission mechanism, causing the drum to start rotating. As the drum rotates, the wire rope (or chain) is gradually wound up or lowered, thereby driving the weight up or down.

[0004] The existing electric hoist hoisting device has technical problems such as limited lifting distance, short service life of the steel rope, and poor stability during lifting.

[0005] Based on this, we propose a double-drum electric hoist hoisting device with a longer lifting distance, higher lifting efficiency, longer steel rope service life and better stability during lifting. Utility Model Content

[0006] The purpose of this utility model is to address the above-mentioned problems in the existing technology and propose a double-drum electric hoist lifting device. The technical problem to be solved by this utility model is: how to achieve a longer lifting distance, higher lifting efficiency, longer service life of the steel rope and better stability during lifting of the electric hoist.

[0007] The purpose of this utility model can be achieved through the following technical solutions:

[0008] The yoke is provided with two guide wheels, and the two guide wheels are connected with each other through the two lifting ropes, and the two guide wheels are connected with each other through the two lifting ropes.

[0009] The working principle of the utility model is as follows: in the initial position, the steel ropes on the two lifting double-rope drum mechanisms are all released, the weight is hung on the lifting hoist, the lifting motor is started, and the output shaft of the lifting motor drives the corresponding lifting double-rope drum mechanism to rotate through one of the switching mechanisms, driving the steel rope to pass through the corresponding steel rope take-up mechanism to rise and be retracted onto the lifting double-rope drum mechanism, synchronously raising the height of the two guide mechanisms, and at the same time the rolling push rod mechanism slowly rises, driving the tensioning mechanism to slowly rise, so that the vertical distance between the tensioning mechanism and the guide mechanism remains basically unchanged, so that the two steel ropes are in the tensioning position. The part between the wire mechanism and the guide mechanism always maintains a vertical downward direction, and the two steel ropes slide stably at the same time, so that the guide mechanism on the steel rope can rise stably, making the hoist more stable during the lifting process, thereby increasing the height of the hoist. During the lifting process, when the steel rope passes through the corresponding steel rope take-up mechanism, the steel rope take-up mechanism lubricates the part of the steel rope passing through it. Since the horizontal position of the steel rope on the lifting double-rope drum mechanism will move synchronously during the lifting process, the rolling push rod mechanism will move synchronously on the support mechanism in coordination with this movement. This is the lifting action;

[0010] When the steel rope on one of the lifting drum mechanisms is recovered to the end, the switching mechanism corresponding to the lifting double-rope drum mechanism is retracted, thereby disconnecting the transmission between the lifting motor and the lifting double-rope drum mechanism, and the other switching mechanism is pushed out to achieve the engagement of the lifting double-rope drum mechanism corresponding to the switching mechanism and the output shaft of the lifting motor. The output shaft of the lifting motor drives the corresponding lifting double-rope drum mechanism to rotate through the switching mechanism, and the lifting action is repeated.

[0011] The support mechanism includes four support wall panels, two support wall panels on the same side form a group, support beams are fixed on the outer sides of the two support wall panels on the left, a connecting plate 1 is fixed between the two support wall panels in the same group, and an I-shaped steel rail is fixed between the two connecting plates 1.

[0012] With the above structure, the supporting crossbeam is used to improve the longitudinal stability between the two supporting wall panels on the left side, and the I-shaped steel rail is used to improve the lateral stability between the two groups of supporting wall panels.

[0013] The lifting double-rope drum mechanism includes a drum body, a drum shaft is fixed to the left end of the drum body, the drum shaft is rotatably arranged inside the supporting beam, and the right end of the drum body is rotatably arranged on the supporting wall panel on the right side. Two steel ropes are wound at corresponding positions between the two drum bodies.

[0014] With the above structure, the drum shaft rotates, driving the drum body to rotate, thereby driving the steel rope between the two lifting double-rope drum mechanisms to be retracted.

[0015] The steel rope take-up mechanism includes a take-up body, which is slidably arranged on the drum body and limited by the steel rope. A lubrication box is fixed at the extension hole of the take-up body, and lubricating cotton is arranged in the lubrication box. The steel rope passes through the inside of the lubrication box, and the steel rope and the lubricating cotton rub against each other.

[0016] With the above structure, the wire take-up body ensures that the direction of the steel rope is always vertically downward when it leaves the drum body. When the steel rope is retracted from the extension hole of the wire take-up body, the lubricating cotton in the lubrication box lubricates the steel rope, so that the steel rope can roll more smoothly relative to the corresponding guide mechanism.

[0017] The rolling push rod mechanism includes a rolling matching seat, a roller in the rolling matching seat is rollingly arranged on the I-shaped steel rail, and a lifting matching push rod is fixed on the lower side of the rolling matching seat.

[0018] With the above structure, during the lifting process, the horizontal position of the steel rope on the drum body will move synchronously. At this time, the rolling matching seat cooperates with the movement and moves synchronously on the I-shaped steel rail. At the same time, the push rod rises slowly, so that the vertical distance between the tensioning mechanism and the guide mechanism remains basically unchanged, so that the part of the two steel ropes between the tensioning mechanism and the guide mechanism always maintains a vertical downward direction, and at the same time, the two steel ropes can slide stably, thereby realizing the stable rise of the guide mechanism on the steel rope, making the lifting hoist more stable during the lifting process.

[0019] The switching mechanism includes an engaging electric push rod, which is fixed on the supporting beam. The pushing end of the engaging electric push rod is connected with an elastic engaging shaft through a compression spring.

[0020] By adopting the above structure, when the engaging electric push rod is pushed out, the engaging electric push rod, the drum shaft corresponding to the engaging electric push rod and the output shaft of the lifting motor are connected through a gear pair. When the engaging electric push rod is retracted, the engaging electric push rod, the drum shaft corresponding to the engaging electric push rod and the output shaft of the lifting motor are disconnected from the transmission. The compression spring is used to smoothly engage with the corresponding drum shaft and the output shaft of the lifting motor when the gear on the engaging electric push rod cannot engage with the corresponding drum shaft and the output shaft of the lifting motor at one time when the engaging electric push rod is pushed out. When the two engaging electric push rods are extended at the same time, the lifting efficiency is higher.

[0021] The tensioning mechanism includes a tensioning plate, which is fixed to the push-out end of the lifting matching push rod. Four through holes are opened on the tensioning plate. A tensioning pulley group is rotatably connected to the through holes through the bearing seat, and the steel rope passes through the corresponding tensioning pulley group.

[0022] With the above structure, when the steel rope passes through the corresponding take-up pulley block, the portion of the steel rope below the take-up pulley block is always kept vertical in the longitudinal direction through the take-up pulley block, thereby improving the stability of the guide mechanism during the lifting process.

[0023] The guide mechanism includes a second connecting plate, a guide rotating seat is rotatably provided on the upper side of the connecting plate, a guide rotating pulley is rotatably provided on the guide rotating seat, a steel rope passes through the guide rotating seat and the guide rotating pulley, and the guide rotating pulley is rotatably provided on the steel rope.

[0024] With the above structure, the steel rope cooperates with the guide rotating pulley to ensure that the guide rotating pulley is always located at the lowest point on the steel rope, and the guide rotating seat rotates circumferentially on the second connecting plate, thereby improving the stability of the guide rotating pulley during the lifting process.

[0025] The lifting hoist includes a counterweight seat, which is fixed to the lower end of the second connecting plate. A connecting seat is rotatably provided on the lower side of the counterweight seat, and a quick-connect hook lock is fixed on the lower side of the connecting seat.

[0026] With the above structure, the counterweight seat and the connecting seat are rotated to realize the quick-connect hook lock to work at any horizontal angle. The counterweight seat cooperates with the guide rotating pulley to realize that the guide rotating pulley is always located at the lowest point on the corresponding steel rope.

[0027] Compared with the existing technology, this double-drum electric hoist hoisting device has the following advantages:

[0028] 1. Through the cooperation of the lifting double rope drum mechanism, the lifting motor and the switching mechanism, two lifting actions are performed successively to increase the lifting distance of the electric hoist. At the same time, the steel rope rolls with the corresponding guide mechanism during the lifting process, reducing steel rope fatigue and extending service life;

[0029] 2. Through the cooperation of the support mechanism and the rolling push rod mechanism, the rolling push rod mechanism cooperates with the steel rope to move horizontally on the lifting double rope drum mechanism during the lifting process, thereby improving the stability of the lifting action;

[0030] 3. The rolling push rod mechanism cooperates with the tensioning mechanism to ensure that the vertical distance between the tensioning mechanism and the guide mechanism remains basically unchanged during the lifting action, so that the part of the two steel ropes between the tensioning mechanism and the guide mechanism always maintains a vertical downward direction. At the same time, the two steel ropes can slide stably, thereby achieving a stable rise of the guide mechanism on the steel ropes, making the hoist more stable during the lifting process.

[0031] 4. Through the cooperation of the steel rope take-up mechanism and the steel rope, when the steel rope passes through the corresponding steel rope take-up mechanism during the lifting process, the steel rope take-up mechanism will brush oil and lubricate the part of the steel rope passing through, so that the steel rope will be more stable when rolling relative to the corresponding guide mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view structural schematic diagram of the utility model.

[0033] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0034] Figure 3 It is a side structural schematic diagram of the utility model.

[0035] Figure 4 It is a three-dimensional structural diagram of the steel rope take-up mechanism in the utility model.

[0036] Figure 5 It is a three-dimensional structural diagram of the tensioning pulley group in the utility model.

[0037] Figure 6 It is a three-dimensional structural diagram of the guide mechanism in the utility model.

[0038] In the figure, 1. support mechanism; 2. lifting double-rope drum mechanism; 3. steel rope take-up mechanism; 4. rolling push rod mechanism; 5. lifting motor; 6. switching mechanism; 7. wire-tightening mechanism; 8. guide mechanism; 9. lifting hoist; 10. steel rope; 101. supporting wall panel; 102. I-shaped steel rail; 103. supporting beam; 104. connecting plate 1; 201. reel body; 202. reel shaft; 301. wire-tightening device body; 302. lubrication box; 401. rolling mating seat; 402. lifting mating push rod; 601. engaging electric push rod; 602. elastic engaging shaft; 701. wire-tightening plate; 702. wire-tightening pulley block; 801. connecting plate 2; 802. guide rotating seat; 803. guide rotating pulley; 901. counterweight seat; 902. connecting seat; 903. quick-connect hook lock. DETAILED DESCRIPTION

[0039] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0040] like Figures 1-6 As shown, the double-drum electric hoist hoisting device includes a support mechanism 1, a hoisting hoist 9 and two guide mechanisms 8. Two lifting double-rope drum mechanisms 2 are arranged inside the support mechanism 1. The positions of the two lifting double-rope drum mechanisms 2 correspond to each other. Two steel ropes 10 are wound around each other between the two lifting double-rope drum mechanisms 2. The two steel ropes 10 are respectively wound around the corresponding positions on the two lifting double-rope drum mechanisms 2, and two steel rope take-up mechanisms 3 are arranged at the corresponding positions of each lifting double-rope drum mechanism 2. The two steel ropes 10 pass through the corresponding steel rope take-up mechanisms 3 respectively. A lifting motor 5 and two switching mechanisms 6 are fixed on the mechanism 1, among which one lifting double-rope drum mechanism 2, the switching mechanism 6 at the corresponding position of the lifting double-rope drum mechanism 2 and the lifting motor 5 are engaged and transmitted through a gear pair. A rolling push rod mechanism 4 is provided on the support mechanism 1, and a tensioning mechanism 7 is provided at the lower end of the rolling push rod mechanism 4. Two steel ropes 10 pass through the tensioning mechanism 7 respectively. Two guide mechanisms 8 are respectively rollingly set on the two steel ropes 10. The two guide mechanisms 8 are always located at the lowest point of the two steel ropes 10. The two guide mechanisms 8 are fixed above the lifting hoist 9.

[0041] In this embodiment, at the initial position, the steel ropes 10 on the two lifting double-rope drum mechanisms 2 are all released, the weight is hung on the lifting hoist 9, the lifting motor 5 is started, and the output shaft of the lifting motor 5 drives the corresponding lifting double-rope drum mechanism 2 to rotate through one of the switching mechanisms 6, driving the steel rope 10 to pass through the corresponding steel rope take-up mechanism 3 to rise and be retracted onto the lifting double-rope drum mechanism 2, synchronously raising the height of the two guide mechanisms 8, and at the same time, the rolling push rod mechanism 4 slowly rises, driving the tensioning mechanism 7 to slowly rise, so that the vertical distance between the tensioning mechanism 7 and the guide mechanism 8 remains basically unchanged, so that the two steel ropes 10 are in the tensioning mechanism The portion between 7 and the guide mechanism 8 always maintains a vertical downward direction, and at the same time, the two steel ropes 10 are stably slid, thereby achieving a stable rise of the guide mechanism 8 on the steel rope 10, making the hoisting hoist 9 more stable during the lifting process, thereby increasing the height of the hoisting hoist 9. During the lifting process, when the steel rope 10 passes through the corresponding steel rope take-up mechanism 3, the steel rope take-up mechanism 3 brushes oil and lubricates the portion of the steel rope 10 that passes through it. Since the horizontal position of the steel rope 10 on the lifting double-rope drum mechanism 2 will move synchronously during the lifting process, the rolling push rod mechanism 4 will move synchronously on the support mechanism 1 in coordination with this movement. This is a lifting action;

[0042] When the steel rope 10 on one of the lifting drum mechanisms 2 is recovered to the end, the switching mechanism 6 corresponding to the lifting double-rope drum mechanism 2 is retracted, thereby disconnecting the transmission between the lifting motor 5 and the lifting double-rope drum mechanism 2, and the other switching mechanism 6 is pushed out to achieve the engagement of the lifting double-rope drum mechanism 2 corresponding to the switching mechanism 6 and the output shaft of the lifting motor 5. The output shaft of the lifting motor 5 drives the corresponding lifting double-rope drum mechanism 2 to rotate through the switching mechanism 6, and the lifting action is repeated.

[0043] The supporting mechanism 1 includes four supporting wall panels 101, the two supporting wall panels 101 on the same side form a group, the outer sides of the two supporting wall panels 101 on the left are fixed with supporting beams 103, a connecting plate 104 is fixed between the two supporting wall panels 101 in the same group, and an I-shaped steel rail 102 is fixed between the two connecting plates 104.

[0044] In this embodiment, the supporting beam 103 is used to improve the longitudinal stability between the two supporting wall panels 101 on the left side, and the I-shaped rail 102 is used to improve the lateral stability between the two groups of supporting wall panels 101.

[0045] The lifting double-rope drum mechanism 2 includes a drum body 201, a drum shaft 202 is fixed to the left end of the drum body 201, the drum shaft 202 is rotatably set inside the supporting beam 103, and the right end of the drum body 201 is rotatably set on the supporting wall panel 101 on the right side. Two steel ropes 10 are wound at corresponding positions between the two drum bodies 201.

[0046] In this embodiment, the drum shaft 202 rotates, driving the drum body 201 to rotate, thereby driving the steel rope 10 between the two lifting double-rope drum mechanisms 2 to be retracted.

[0047] The steel rope take-up mechanism 3 includes a take-up body 301, which is slidably arranged on the drum body 201. The take-up body 301 is limited by the steel rope 10. A lubrication box 302 is fixed at the extension hole of the take-up body 301. Lubrication cotton is provided in the lubrication box 302. The steel rope 10 passes through the inside of the lubrication box 302, and the steel rope 10 and the lubrication cotton rub against each other.

[0048] In this embodiment, the wire take-up body 301 ensures that the direction of the steel rope 10 is always vertically downward when it leaves the drum body 201. When the steel rope 10 is retracted from the extension hole of the wire take-up body 301, the lubricating cotton in the lubrication box 302 lubricates the steel rope 10, so that the steel rope 10 can roll more smoothly relative to the corresponding guide mechanism 8.

[0049] The rolling push rod mechanism 4 includes a rolling matching seat 401 . The roller in the rolling matching seat 401 is rollingly arranged on the I-shaped steel rail 102 . A lifting matching push rod 402 is fixed to the lower side of the rolling matching seat 401 .

[0050] In this embodiment, during the lifting process, since the horizontal position of the steel rope 10 on the drum body 201 will move synchronously, the rolling matching seat 401 cooperates with the movement and moves synchronously on the I-shaped steel rail 102. At the same time, the push rod 402 rises slowly, so that the vertical distance between the tensioning mechanism 7 and the guide mechanism 8 remains basically unchanged, so that the part of the two steel ropes 10 between the tensioning mechanism 7 and the guide mechanism 8 always maintains a vertical downward direction, and at the same time, the two steel ropes 10 can slide stably, thereby achieving stable rising of the guide mechanism 8 on the steel rope 10, making the lifting hoist 9 more stable during the lifting process.

[0051] The switching mechanism 6 includes an engaging electric push rod 601 , which is fixed on the supporting beam 103 . An elastic engaging shaft 602 is connected to the pushing end of the engaging electric push rod 601 via a compression spring.

[0052] In this embodiment, when the engaging electric push rod 601 is pushed out, the engaging electric push rod 601, the reel shaft 202 corresponding to the engaging electric push rod 601 and the output shaft of the lifting motor 5 are connected through a gear pair. When the engaging electric push rod 601 is retracted, the engaging electric push rod 601, the reel shaft 202 corresponding to the engaging electric push rod 601 and the output shaft of the lifting motor 5 are disconnected from the transmission connection. The compression spring is used to push out the engaging electric push rod 601. When the gear on the engaging electric push rod 601 cannot engage with the corresponding reel shaft 202 and the output shaft of the lifting motor 5 at one time, it engages smoothly through the elasticity of the compression spring. When the two engaging electric push rods 601 are extended at the same time, the lifting efficiency is higher.

[0053] The tensioning mechanism 7 includes a tensioning plate 701, which is fixed to the push-out end of the lifting matching push rod 402. Four through holes are opened on the tensioning plate 701, and a tensioning pulley group 702 is rotatably connected to the through hole through the bearing seat. The steel rope 10 passes through the corresponding tensioning pulley group 702.

[0054] In this embodiment, when the steel rope 10 passes through the corresponding take-up pulley block 702, the take-up pulley block 702 keeps the portion of the steel rope 10 below the take-up pulley block 702 vertical in the longitudinal direction, thereby improving the stability of the guide mechanism 8 during the lifting process.

[0055] The guide mechanism 8 includes a connecting plate 2 801, and a guide rotating seat 802 is rotatably provided on the upper side of the connecting plate 2 801. A guide rotating pulley 803 is rotatably provided on the guide rotating seat 802. The steel rope 10 passes through the guide rotating seat 802 and the guide rotating pulley 803, and the guide rotating pulley 803 is rotatably set on the steel rope 10.

[0056] In this embodiment, the steel rope 10 cooperates with the guide rotating pulley 803 to ensure that the guide rotating pulley 803 is always located at the lowest point on the steel rope 10, and the guide rotating seat 802 rotates circumferentially on the connecting plate 2 801 to improve the stability of the guide rotating pulley 803 during the lifting process.

[0057] The lifting hoist 9 includes a counterweight seat 901, which is fixed to the lower end of the connecting plate 801. A connecting seat 902 is rotatably provided on the lower side of the counterweight seat 901, and a quick-connect hook lock 903 is fixed on the lower side of the connecting seat 902.

[0058] In this embodiment, the counterweight seat 901 and the connecting seat 902 are rotatably arranged to enable the quick-connect hook lock 903 to work at any horizontal angle. The counterweight seat 901 cooperates with the guide rotating pulley 803 to ensure that the guide rotating pulley 803 is always located at the lowest point on the corresponding steel rope 10.

[0059] The working principle of the present invention is as follows: in the initial position, the steel ropes 10 on the two drum bodies 201 are all released, the weight is hung on the quick-connect hook lock 903, the lifting motor 5 is started, and when the meshing electric push rod 601 is pushed out, the meshing electric push rod 601, the drum shaft 202 corresponding to the meshing electric push rod 601 and the output shaft of the lifting motor 5 are connected through a gear pair transmission, so that the output shaft of the lifting motor 5 drives the corresponding drum body 201 to rotate, and the wire take-up body 301 makes the direction of the steel rope 10 always vertically downward when it leaves the drum body 201. When the steel rope 10 is retracted from the extension hole of the wire take-up body 301, the lubricating cotton in the lubrication box 302 lubricates the steel rope 10 When the steel rope 10 passes through the corresponding take-up body 301 and rises to be retracted onto the corresponding drum body 201, the height of the guide rotating pulley 803 is synchronously increased, and at the same time, the push rod 402 slowly rises, driving the tensioning plate 701 to slowly rise, so that the vertical distance between the tensioning plate 701 and the guide rotating pulley 803 remains basically unchanged, so that the parts of the two steel ropes 10 between the tensioning plate 701 and the guide rotating pulley 803 always maintain a vertical downward direction, thereby increasing the height of the lifting hoist 9. Since the horizontal position of the steel rope 10 on the drum body 201 will move synchronously, the rolling matching seat 401 will cooperate with this movement to move synchronously on the I-shaped steel rail 102, which is a lifting action;

[0060] When the steel rope 10 on one of the drum bodies 201 is recovered to the end, the engaging electric push rod 601 is retracted, and the engaging electric push rod 601, the drum shaft 202 corresponding to the engaging electric push rod 601 and the output shaft of the lifting motor 5 are disconnected from the transmission connection, and the other engaging electric push rod 601 is pushed out. The engaging electric push rod 601, the drum shaft 202 corresponding to the engaging electric push rod 601 and the output shaft of the lifting motor 5 are connected through a gear pair. The lifting motor 5 drives the corresponding drum shaft 202 to rotate through the engaging electric push rod 601, and repeats the lifting action.

[0061] In summary, by cooperating with the lifting double-rope drum mechanism 2, the lifting motor 5 and the switching mechanism 6, two lifting actions are performed successively, thereby increasing the lifting distance of the electric hoist. At the same time, the steel rope 10 is caused to roll with the corresponding guide mechanism 8 during the lifting process, thereby reducing fatigue of the steel rope 10 and extending its service life.

[0062] By cooperating with the support mechanism 1 and the rolling push rod mechanism 4, the rolling push rod mechanism 4 cooperates with the steel rope 10 to move horizontally on the lifting double rope drum mechanism 2 during the lifting process, thereby improving the stability of the lifting action;

[0063] By cooperating with the tensioning mechanism 7, the vertical distance between the tensioning mechanism 7 and the guide mechanism 8 remains substantially unchanged during the lifting operation, so that the portion of the two steel ropes 10 between the tensioning mechanism 7 and the guide mechanism 8 always maintains a vertical downward direction. At the same time, the two steel ropes 10 slide stably, thereby achieving a stable rise of the guide mechanism 8 on the steel ropes 10, making the hoist 9 more stable during the lifting process.

[0064] By cooperating with the steel rope 10, the steel rope take-up mechanism 3 lubricates the portion of the steel rope 10 passing through the corresponding steel rope take-up mechanism 3 during the lifting process, so that the steel rope 10 can roll more smoothly relative to the corresponding guide mechanism 8.

[0065] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A double-drum electric hoist hoisting device, comprising a support mechanism (1), a hoisting hoist (9) and two guide mechanisms (8), characterized in that: Two lifting double-rope drum mechanisms (2) are provided inside the support mechanism (1), and the positions of the two lifting double-rope drum mechanisms (2) correspond to each other. Two steel ropes (10) are wound between the two lifting double-rope drum mechanisms (2), and the two steel ropes (10) are respectively wound around corresponding positions on the two lifting double-rope drum mechanisms (2). Two steel rope take-up mechanisms (3) are provided at corresponding positions of each lifting double-rope drum mechanism (2), and the two steel ropes (10) are respectively passed through the inside of the corresponding steel rope take-up mechanisms (3). A lifting motor (5) and two switching mechanisms (6) are fixed on the support mechanism (1). A gear pair is meshed between one of the lifting double-rope drum mechanisms (2), a switching mechanism (6) at a position corresponding to the lifting double-rope drum mechanism (2), and a lifting motor (5). A rolling push rod mechanism (4) is provided on the support mechanism (1). A tensioning mechanism (7) is provided at the lower end of the rolling push rod mechanism (4). Two steel ropes (10) pass through the tensioning mechanism (7) respectively. Two guide mechanisms (8) are respectively provided on the two steel ropes (10). The two guide mechanisms (8) are always located at the lowest point of the two steel ropes (10). The two guide mechanisms (8) are fixed above the lifting hoist (9).

2. A double-drum electric hoist hoisting device according to claim 1, characterized in that: The support mechanism (1) comprises four support wall panels (101), wherein two support wall panels (101) on the same side form a group, a support beam (103) is fixed to the outer sides of the two support wall panels (101) on the left side, a connecting plate (104) is fixed between the two support wall panels (101) in the same group, and an I-shaped steel rail (102) is fixed between the two connecting plates (104).

3. A double-drum electric hoist hoisting device according to claim 2, characterized in that: The lifting double-rope drum mechanism (2) includes a drum body (201), a drum shaft (202) is fixed to the left end of the drum body (201), the drum shaft (202) is rotatably arranged inside the supporting crossbeam (103), and the right end of the drum body (201) is rotatably arranged on the right supporting wall panel (101), and two steel ropes (10) are wound at corresponding positions between the two drum bodies (201).

4. A double-drum electric hoist hoisting device according to claim 3, characterized in that: The steel rope take-up mechanism (3) comprises a take-up body (301), which is slidably arranged on the reel body (201). The take-up body (301) is limited by the steel rope (10). A lubrication box (302) is fixed at the extension hole of the take-up body (301). Lubricating cotton is arranged in the lubrication box (302). The steel rope (10) passes through the lubrication box (302), and the steel rope (10) and the lubricating cotton rub against each other.

5. A double-drum electric hoist hoisting device according to claim 4, characterized in that: The rolling push rod mechanism (4) comprises a rolling matching seat (401), a roller in the rolling matching seat (401) is rollingly arranged on the I-shaped steel rail (102), and a lifting matching push rod (402) is fixed on the lower side of the rolling matching seat (401).

6. A double-drum electric hoist hoisting device according to claim 5, characterized in that: The switching mechanism (6) comprises an engaging electric push rod (601), which is fixed on the supporting beam (103). An elastic engaging shaft (602) is connected to the pushing end of the engaging electric push rod (601) via a compression spring.

7. A double-drum electric hoist hoisting device according to claim 6, characterized in that: The tensioning mechanism (7) includes a tensioning plate (701), which is fixed to the push-out end of the lifting matching push rod (402). Four through holes are opened on the tensioning plate (701), and tensioning pulley groups (702) are rotatably connected in the through holes through bearing seats. The steel rope (10) passes through the corresponding tensioning pulley groups (702).

8. A double-drum electric hoist hoisting device according to claim 7, characterized in that: The guide mechanism (8) includes a second connecting plate (801), a guide rotating seat (802) is rotatably provided on the upper side of the second connecting plate (801), a guide rotating pulley (803) is rotatably provided on the guide rotating seat (802), a steel rope (10) passes through the guide rotating seat (802) and the guide rotating pulley (803), and the guide rotating pulley (803) is rotatably provided on the steel rope (10).

9. A double-drum electric hoist hoisting device according to claim 8, characterized in that: The hoisting hoist (9) includes a counterweight seat (901), which is fixed to the lower end of the second connecting plate (801). The lower side of the counterweight seat (901) is rotatably provided with a connecting seat (902), and the lower side of the connecting seat (902) is fixed with a quick-connect hook lock (903).

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