Large-tonnage high-lift special electric hoist

Abstract

The utility model relates to the technical field of electric hoists, in particular to a large-tonnage high-lift special electric hoist which comprises two sets of supporting arms and a rope pressing roller, each supporting arm comprises a T-shaped arm, a mounting base and an elastic base, each T-shaped arm is provided with a middle supporting foot, a top end foot and a bottom end foot, and the two ends of the rope pressing roller are connected between the two sets of middle supporting feet correspondingly. The bottom end foot is hinged to the installation base, the top end foot is hinged to the elastic base, and the elastic base is used for driving the middle supporting foot to have the rotating tendency so as to drive the rope pressing roller to press the rope on the winding drum. According to the large-tonnage high-lift special electric hoist, under the driving of the elastic force of the elastic base, the middle supporting foot has the rotating tendency to drive the rope pressing roller to press the rope arrangement on the winding drum, so that the rope arrangement stability is better, and the rope disorder phenomenon is not prone to occurring; the lateral force at the outlet of the rope guide is reduced, and the rope guide is not prone to being directly damaged.

Description

Technical Field

[0001] The present application relates to the technical field of electric hoists, and in particular to a large-tonnage and high-lift electric hoist. Background Art

[0002] Electric hoist is a special lifting equipment installed on overhead crane and gantry crane. Electric hoist has the characteristics of small size, light weight, simple operation and easy use. It is used in industrial and mining enterprises, warehouses, docks and other places.

[0003] A search revealed Chinese patent application number 201120107325.1, which discloses an electric hoist for controlling the raising and lowering of a stacker-reclaimer rake. The hoist comprises a dual-speed conical rotor brake motor, a drum assembly, a rope guide, a speed reducer, a flameout limiter, an overload and underload protector, and an angle encoder. The electric hoist utilizes a dual-speed motor to adjust the rake's rotation speed from fast to slow or from slow to fast, ensuring smooth raising and lowering. When the wire rope moves vertically or at different angles, the rope guide arranges the rope regularly along the drum's rope grooves. The electric hoist can also adjust the stacker-reclaimer rake's raising and lowering range to a preset value.

[0004] Regarding the above-mentioned related technologies, the inventors believe that there are the following technical defects that need to be improved:

[0005] In electric hoists that require "large tonnage and high lift", since the weight of the lifted goods is large and the required lifting height (i.e. lift) is high, when the rope on the drum passes through the rope guide for oblique pulling operation, there is a lateral force at the rope guide outlet. If this lateral force is too large, it may cause direct damage to the rope guide. Utility Model Content

[0006] This application provides a large-tonnage high-lift electric hoist to improve the following technical problems:

[0007] When the rope on the drum is pulled obliquely through the rope guide, there is a lateral force at the rope guide outlet. If this lateral force is too large, it may cause direct damage to the rope guide.

[0008] This application provides a large-tonnage high-lift electric hoist, which adopts the following technical solutions:

[0009] A large-tonnage, high-lift electric hoist comprises at least one set of rope-laying and pressure roller devices, a chassis, a drum, and a rope. The rope is wound on the drum, which is installed in the chassis. The chassis is provided with a notch for the rope-pressing drum to extend into the interior. The mounting seat is installed on the bottom outer side of the chassis, and the elastic seat is installed on the top of the chassis. The central axis of the drum is parallel to the rope-pressing drum.

[0010] The rope pressing roller device includes two groups of support arms and a rope pressing drum, the support arm includes a T-shaped arm, a mounting seat and an elastic seat, the T-shaped arm has a middle support leg, a top leg and a bottom leg, the two ends of the rope pressing drum are respectively connected between the two groups of the middle support legs, the bottom leg is hinged to the mounting seat, the top leg is hinged to the elastic seat, and the elastic seat is used to drive the middle support leg to have a rotation tendency to drive the rope pressing drum to press the rope on the drum.

[0011] In a feasible technical solution of the present application, the mounting base includes a T-shaped ear plate and a first rotating pin, the first rotating pin passes through the T-shaped ear plate and the bottom end foot, and the T-shaped ear plate and the bottom end foot are hinged through the first rotating pin.

[0012] In a feasible technical solution of the present application, the elastic seat includes an L-shaped ear plate, an adjusting screw, a limiting nut, an elastic member and a second rotating pin, the second rotating pin passes through one end of the adjusting screw and the top foot, and the one end of the adjusting screw and the top foot are hinged through the second rotating pin, the adjusting screw passes through the L-shaped ear plate and the elastic member, the limiting nut is threadedly assembled on the other end of the adjusting screw, and the elastic member is clamped between the L-shaped ear plate and the limiting nut.

[0013] In a feasible technical solution of the present application, the elastic member is a compression spring.

[0014] In a feasible technical solution of the present application, the T-shaped arm further has a limiting bolt group, and the limiting bolt group is located between the middle support leg and the top leg.

[0015] In a feasible technical solution of the present application, the rope pressure drum includes a support rod, a drum sleeve and a bearing. The two ends of the support rod are connected between the two groups of middle support legs through a bolt group structure. The drum sleeve is arranged on the support rod. The bearing has two groups and is respectively located at the two ends of the drum sleeve. The bearing is located between the inner circumferential wall of the drum sleeve and the outer circumferential wall of the support rod.

[0016] In a feasible technical solution of the present application, an angle steel plate is further provided at the top corner of the chassis, and the elastic seat is connected to the angle steel plate.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] Under the elastic force of the elastic seat, the middle foot has a rotating tendency to drive the rope pressing roller to press the rope on the winding drum, so that the stability of the rope is better and the rope disorder phenomenon is less likely to occur. When the rope on the winding drum is subjected to the inclined pulling operation by the rope guide, the lateral force at the outlet of the rope guide is reduced, and the rope guide is less likely to be directly damaged. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a structural schematic diagram of a large-tonnage high-lift special electric hoist of the present application.

[0021] Figure 2 is a side structural schematic diagram of the rope arranging and pressing roller device in the present application.

[0022] Figure 3 is a front structural schematic diagram of the rope arranging and pressing roller device in the present application.

[0023] BRIEF DESCRIPTION OF DRAWINGS:

[0024] 100, rope arranging and pressing roller device; 200, machine box; 201, angle steel plate; 300, winding drum; 400, rope; 1, rope pressing roller; 11, support rod; 12, roller sleeve; 13, bearing; 2, T-shaped arm; 21, middle foot; 22, top end foot; 23, bottom end foot; 24, limit bolt set; 3, mounting seat; 31, T-shaped ear plate; 32, first rotating pin shaft; 4, elastic seat; 41, L-shaped ear plate; 42, adjusting screw; 43, limit nut; 44, elastic member; 45, second rotating pin shaft. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0029] The following is combined with Figures 1-3 This application is described in further detail.

[0030] The embodiment of the present application discloses a large-tonnage high-lift electric hoist. Figure 1 、 Figure 2 and Figure 3 The large-tonnage and high-lift special electric hoist includes at least one group of rope-laying and pressure roller devices 100, a chassis 200, a drum 300 and a rope-laying 400. The rope-laying 400 is wound on the drum 300, and the drum 300 is installed in the chassis 200. The chassis 200 is provided with a notch for the rope-pressing drum 1 to extend into the interior. The mounting seat 3 is installed on the bottom outer side of the chassis 200, and the elastic seat 4 is installed on the top of the chassis 200. The central axis of the drum 300 is parallel to the rope-pressing drum 1. An angle steel plate 201 is also provided at the top corner of the chassis 200. The elastic seat 4 is connected to the angle steel plate 201, and the angle steel plate 201 facilitates the installation and fixation of the elastic seat 4.

[0031] The rope-laying and pressing roller device 100 includes two groups of support arms and a rope-pressing drum 1. The support arms include T-shaped arms 2, mounting seats 3 and elastic seats 4. The T-shaped arms 2 have middle legs 21, top legs 22 and bottom legs 23. The two ends of the rope-pressing drum 1 are respectively connected between the two groups of middle legs 21. The bottom legs 23 are hinged on the mounting seats 3, and the top legs 22 are hinged on the elastic seats 4. The elastic seats 4 are used to drive the middle legs 21 to have a rotation tendency to drive the rope-pressing drum 1 to press the rope 400 on the drum 300.

[0032] In the embodiment, the mounting seat 3 comprises a T-shaped lug plate 31 and a first rotating pin shaft 32, the first rotating pin shaft 32 penetrates the T-shaped lug plate 31 and the bottom end foot 23, and the T-shaped lug plate 31 and the bottom end foot 23 are hinged through the first rotating pin shaft 32. The mounting seat 3 with the above design has simple and firm structure, relatively low manufacturing cost, and relatively low assembly cost.

[0033] In the embodiment, the elastic seat 4 comprises an L-shaped lug plate 41, an adjusting screw rod 42, a limiting nut 43, an elastic member 44, and a second rotating pin shaft 45, the second rotating pin shaft 45 penetrates one end of the adjusting screw rod 42 and the top end foot 22, the one end of the adjusting screw rod 42 and the top end foot 22 are hinged through the second rotating pin shaft 45, the adjusting screw rod 42 penetrates the L-shaped lug plate 41 and the elastic member 44, the limiting nut 43 is threadedly assembled to the other end of the adjusting screw rod 42, and the elastic member 44 is clamped between the L-shaped lug plate 41 and the limiting nut 43. The elastic member 44 is a compression spring, and the T-shaped arm 2 further comprises a limiting bolt set 24, which is located between the middle foot 21 and the top end foot 22.

[0034] The elastic seat 4 with the above design has simple and firm structure, relatively low manufacturing cost, and relatively low assembly cost, and can drive the rope pressing roller 1 to achieve stable pressing effect.

[0035] In the embodiment, the rope pressing roller 1 comprises a supporting rod 11, a roller sleeve 12, and bearings 13, the two ends of the supporting rod 11 are connected to the two groups of middle feet 21 through a bolt set structure, the roller sleeve 12 is sleeved on the supporting rod 11, the bearings 13 are arranged at the two ends of the roller sleeve 12, and the bearings 13 are located between the inner circumferential wall of the roller sleeve 12 and the outer circumferential wall of the supporting rod 11.

[0036] The rope pressing roller 1 with the above design has self-rotation effect, and can be in contact with the rope arranging device 400, so that the wear speed is small.

[0037] The beneficial technical effects of the large-tonnage high-lift special electric hoist are as follows.

[0038] Under the elastic force of the elastic seat 4, the middle foot 21 has a rotating trend to drive the rope pressing roller 1 to press the rope arranging device 400 on the winding drum 300, so that the stability of the rope arranging device 400 is better, and the rope disorder phenomenon is less likely to occur. When the rope arranging device 400 is operated by the rope guide device, the lateral force at the outlet of the rope guide device is reduced, so that the rope guide device is less likely to be damaged. In particular, the electric hoist is suitable for hoisting goods of dozens of tons or even hundreds of tons, and the hoisting height is usually dozens of meters or even hundreds of meters, that is, a non-standard and unconventional large-tonnage high-lift special electric hoist.

[0039] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the present application.

Claims

1. A large-tonnage high-lift electric hoist, characterized in that: The invention comprises at least one group of rope-laying and pressing roller devices (100), a chassis (200), a reel (300) and a rope-laying and pressing roller (400), wherein the rope-laying and pressing roller device (100) comprises two groups of support arms and a rope-pressing roller (1), the support arms comprise a T-shaped arm (2), a mounting seat (3) and an elastic seat (4), the rope-laying and pressing roller (400) is wound on the reel (300), the reel (300) is mounted in the chassis (200), a notch is provided on the chassis (200) for the rope-pressing roller (1) to extend into the interior, the mounting seat (3) is mounted on the outside of the bottom of the chassis (200), the elastic seat (4) is mounted on the top of the chassis (200), and the central axis of the reel (300) is parallel to the rope-pressing roller (1); The T-shaped arm (2) has a middle support leg (21), a top leg (22) and a bottom leg (23); the two ends of the rope pressing drum (1) are respectively connected between two groups of the middle support legs (21); the bottom leg (23) is hinged to the mounting seat (3); the top leg (22) is hinged to the elastic seat (4); the elastic seat (4) is used to drive the middle support leg (21) to have a rotational tendency so as to drive the rope pressing drum (1) to compress the rope (400) on the reel (300).

2. The large-tonnage and high-lift electric hoist according to claim 1 is characterized in that: The mounting seat (3) comprises a T-shaped ear plate (31) and a first rotating pin (32), wherein the first rotating pin (32) passes through the T-shaped ear plate (31) and the bottom end foot (23), and the T-shaped ear plate (31) and the bottom end foot (23) are hingedly connected via the first rotating pin (32).

3. The large-tonnage and high-lift electric hoist according to claim 1 is characterized in that: The elastic seat (4) includes an L-shaped ear plate (41), an adjusting screw (42), a limiting nut (43), an elastic member (44) and a second rotating pin (45), wherein the second rotating pin (45) passes through one end of the adjusting screw (42) and the top foot (22), and one end of the adjusting screw (42) and the top foot (22) are hinged via the second rotating pin (45), the adjusting screw (42) passes through the L-shaped ear plate (41) and the elastic member (44), the limiting nut (43) is threadedly assembled on the other end of the adjusting screw (42), and the elastic member (44) is clamped between the L-shaped ear plate (41) and the limiting nut (43).

4. The large-tonnage and high-lift electric hoist according to claim 3 is characterized in that: The elastic member (44) is a compression spring.

5. The large-tonnage and high-lift electric hoist according to claim 1 is characterized in that: The T-shaped arm (2) is also provided with a limiting bolt group (24), and the limiting bolt group (24) is located between the middle support leg (21) and the top leg (22).

6. The large-tonnage and high-lift electric hoist according to claim 1 is characterized in that: The rope pressure drum (1) comprises a support rod (11), a drum cover (12) and a bearing (13); the two ends of the support rod (11) are connected between two groups of middle support legs (21) through a bolt group structure; the drum cover (12) is sleeved on the support rod (11); the bearing (13) has two groups and is respectively located at the two ends of the drum cover (12); the bearing (13) is located between the inner peripheral wall of the drum cover (12) and the outer peripheral wall of the support rod (11).

7. The large-tonnage and high-lift electric hoist according to claim 1 is characterized in that: An angle steel plate (201) is further provided at the top corner of the chassis (200), and the elastic seat (4) is connected to the angle steel plate (201).

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