Auxiliary hoisting mechanism for suspension arm and hoisting crane

Abstract

The utility model relates to the technical field of hoisting equipment, in particular to an auxiliary hoisting mechanism for a suspension arm and a hoisting crane, the auxiliary hoisting mechanism comprises a square frame, a winding shaft, an auxiliary motor, a pressing assembly and a hook part, the top of the square frame is used for being fixedly connected with the bottom of the suspension arm of the hoisting crane, and the winding shaft is rotationally assembled in the square frame; the auxiliary motor is installed on the outer side of the square frame, an output shaft of the auxiliary motor is connected with the winding shaft to drive the winding shaft to rotate and wind the auxiliary lifting rope, and the pressing assembly is installed on one side of the bottom of the square frame and used for pressing the auxiliary lifting rope wound on the winding shaft. The hook part is installed on the other side of the bottom of the square frame and used for being hooked by an auxiliary hook at the end of an auxiliary lifting rope. The auxiliary hoisting mechanism for the suspension arm and the hoisting crane are firm and compact in structure, small in occupied space and suitable for being installed on the suspension arm so as to be matched with the hoisting crane to hoist small goods under special conditions.

Description

Technical Field

[0001] The present application relates to the technical field of hoisting equipment, and in particular to an auxiliary hoisting mechanism for a boom and a hoisting crane. Background Art

[0002] Aerial work platforms are multi-purpose aerial work machines that carry personnel and equipment to a designated height for aerial work. A winch crane is one type of aerial work platform.

[0003] After searching, the Chinese patent application number 202322564633.2 discloses an auxiliary hoisting mechanism for an aerial work vehicle, including a vertical arm and a lifting arm, a lifting cylinder is connected between the vertical arm and the lifting arm, and a working platform is connected to the front end of the lifting arm. The lifting arm includes a large arm, a telescopic channel is provided in the large arm, and multiple telescopic arms are nested and connected in the telescopic channel. A telescopic cylinder is nested in the inner cavity of the telescopic arm, and the cylinder part of the telescopic cylinder is connected to the inner cavity of the large arm. The rod is connected to the outer telescopic arm, and a hanging plate is vertically connected to the outer telescopic arm. The upper end of the hanging plate is connected to the working platform, and the lower end of the hanging plate is hung with a hook. The upper end of the vertical arm is provided with a U-shaped fork, and a reel is set at the horizontal support of the U-shaped fork. A lifting rope is wound on the reel. A driving motor is provided on one side of the vertical arm, and the output shaft of the driving motor is connected to the reel. A rope winch is provided on the outside of the boom, and the lifting rope is connected to the hook after winding around the rope winch from the reel.

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

[0005] A common winch crane is only equipped with a set of hoisting rope winches, lifting ropes, large hooks, etc. on the boom, which is used to lift cargoes with large volume and weight. However, in special circumstances, such as when small cargoes need to be lifted, the total weight of the cargoes may not be as heavy as a large hook. At this time, it is obviously inappropriate to start a high-power hoisting rope winch, which is not only labor-saving but also lacks flexibility and is very inconvenient to operate. Utility Model Content

[0006] The present application provides an auxiliary hoisting mechanism for a boom and a hoisting crane to improve the following technical problems:

[0007] A common winch crane is only equipped with a set of hoisting rope winches, lifting ropes, large hooks, etc. on the boom, which is used to lift cargoes with large volume and weight. However, in special circumstances, such as when small cargoes need to be lifted, the total weight of the cargoes may not be as heavy as a large hook. At this time, it is obviously inappropriate to start a high-power hoisting rope winch, which is not only labor-saving but also lacks flexibility and is very inconvenient to operate.

[0008] In a first aspect, the present application provides an auxiliary hoisting mechanism for a boom, which adopts the following technical solution:

[0009] An auxiliary hoisting mechanism for a boom, comprising a square frame, a winding shaft, an auxiliary motor, a clamping assembly and a hook portion, wherein the top of the square frame is used to connect to the bottom of the boom of a fixed hoisting crane, the winding shaft is rotatably assembled in the square frame, the auxiliary motor is installed on the outer side of the square frame, and the output shaft of the auxiliary motor is connected to the winding shaft to drive the winding shaft to rotate and reel in the auxiliary hoisting rope, the clamping assembly is installed on one side of the bottom of the square frame and is used to clamp the auxiliary hoisting rope wound on the winding shaft, and the hook portion is installed on the other side of the bottom of the square frame and is used to be hung by the auxiliary hook at the end of the auxiliary hoisting rope.

[0010] In a feasible technical solution of the present application, the square frame includes two side panels, two mounting plates and two bottom rods, the mounting plate is vertically connected between the two side panels, the two mounting plates are respectively located on both sides of the top of the square frame, a plurality of bolt holes are provided on the mounting plate, the bottom rod is vertically connected between the two side panels, and the two bottom rods are respectively located on both sides of the bottom of the square frame, and the clamping assembly and the hook part are respectively installed on the two bottom rods.

[0011] In a feasible technical solution of the present application, both ends of the bottom rod are threadedly assembled with locking bolts along the central axis, and the bottom of the side plate is provided with an ear plate for the locking bolt to pass through.

[0012] In a feasible technical solution of the present application, the hook portion is a plate-like structure and is clamped between one of the side plates and the locking bolt. The periphery of the hook portion is an arc-shaped structure. One end of the hook portion is provided with a through hole for the locking bolt to pass through, and one end of the hook portion is provided with a hook circular hole.

[0013] In a feasible technical solution of the present application, the hook portion and the auxiliary motor are respectively installed on opposite sides of the square frame.

[0014] In a feasible technical solution of the present application, the clamping assembly includes a clamping arm, two groups of rope-pressing rollers, a torsion spring and an adjusting barrier. The bottom of the clamping arm is rotatably connected to the middle of the bottom rod. The bottom rod is arranged vertically to the clamping arm. The two groups of rope-pressing rollers are rotatably assembled on both sides of the top of the clamping arm respectively. The rope-pressing rollers are parallel to the central axis of the bottom rod. The adjusting barrier is provided on the bottom rod. One leg of the torsion spring is inserted into the adjusting barrier. The other leg of the torsion spring is pressed against the outer side of the clamping arm. The torsion spring is sleeved on the bottom rod.

[0015] In a feasible technical solution of the present application, the adjustment barrier includes a U-shaped clip and an adjustment bolt, the U-shaped clip is sleeved on the bottom rod, the adjustment bolt is threadedly assembled at the opening of the U-shaped clip and is used to shrink the opening of the U-shaped clip, and the end of the U-shaped clip away from the opening is provided with a socket adapted to fit one leg of the torsion spring.

[0016] In a feasible technical solution of the present application, the clamping arm is a plate-shaped structure and an inclined pressure surface adapted to the other leg of the torsion spring is provided on the outer side of the clamping arm.

[0017] In a feasible technical solution of the present application, the rope pressing roller is made of stainless steel.

[0018] In a second aspect, the present application provides a winch crane, which adopts the following technical solution:

[0019] A hoisting crane comprises the above-mentioned auxiliary hoisting mechanism for a boom, a crane body and a boom, wherein the boom is mounted on the crane body and the auxiliary hoisting mechanism for the boom is mounted on the bottom of the boom.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] The clamping assembly can tighten the auxiliary lifting rope on the reel at any time to prevent it from loosening. When not in use, the auxiliary hook at the end of the auxiliary lifting rope can be temporarily fixed by the hook part to effectively prevent the auxiliary hook from shaking at will. The overall structure is firm, stable and compact, takes up little space, and is suitable for installation on the boom to cooperate with the winch crane to lift small cargo under special circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 It is a structural schematic diagram of the auxiliary hoisting mechanism for the boom of an embodiment of the present application from a side perspective.

[0024] Figure 2 It is a structural schematic diagram of the auxiliary hoisting mechanism for the boom of an embodiment of the present application from the other side.

[0025] Figure 3 It is a structural schematic diagram of a hoisting crane according to an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 100. Crane body;

[0028] 200, crane arm;

[0029] 300. Auxiliary hoisting mechanism for boom;

[0030] 1. Square frame; 11. Side panels; 111. Ear panels; 12. Mounting plate; 121. Bolt holes; 13. Bottom bar; 131. Locking bolts;

[0031] 2. Reel;

[0032] 3. Auxiliary motor;

[0033] 4. Clamping assembly; 41. Clamping arm; 411. Oblique pressing surface; 42. Rope pressing roller; 43. Torsion spring; 44. Adjusting barrier; 441. U-shaped clip; 442. Adjusting bolt;

[0034] 5. Hook portion; 51. Hook round hole. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0036] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may 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 may be directly connected to the other element or indirectly connected to the other element.

[0037] 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.

[0038] 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.

[0039] The following is combined with Figure 1-3 This application is described in further detail.

[0040] The embodiment of the present application discloses an auxiliary hoisting mechanism for a boom and a hoisting crane. Figure 1-3 The auxiliary hoisting mechanism 300 for the boom includes a square frame 1, a reel 2, an auxiliary motor 3, a clamping assembly 4 and a hook portion 5. The top of the square frame 1 is used to connect to the bottom of the boom 200 of the fixed hoisting crane. The reel 2 is rotatably assembled in the square frame 1. The auxiliary motor 3 is installed on the outer side of the square frame 1, and the output shaft of the auxiliary motor 3 is connected to the reel 2 to drive the reel 2 to rotate and reel in the auxiliary hoisting rope. The clamping assembly 4 is installed on one side of the bottom of the square frame 1 and is used to clamp the auxiliary hoisting rope wound on the reel 2. The hook portion 5 is installed on the other side of the bottom of the square frame 1 and is used to be hung by the auxiliary hook at the end of the auxiliary hoisting rope.

[0041] In this embodiment, the square frame 1 includes two side panels 11, two mounting plates 12 and two bottom rods 13. The mounting plate 12 is vertically connected between the two side panels 11. The two mounting plates 12 are respectively located on both sides of the top of the square frame 1. A plurality of bolt holes 121 are provided on the mounting plate 12. The bottom rod 13 is vertically connected between the two side panels 11, and the two bottom rods 13 are respectively located on both sides of the bottom of the square frame 1. The clamping assembly 4 and the hook portion 5 are respectively installed on the two bottom rods 13, wherein the hook portion 5 and the auxiliary motor 3 are respectively installed on opposite sides of the square frame 1.

[0042] In order to facilitate the installation and fixation of the clamping assembly 4 and the hook part 5, the two ends of the bottom rod 13 are threadedly assembled with locking bolts 131 along the central axis, and the bottom of the side plate 11 is provided with an ear plate 111 for the locking bolt 131 to pass through. The hook part 5 is a plate-like structure and is clamped between one of the side plates 11 and the locking bolt 131. The periphery of the hook part 5 is an arc-shaped structure. One end of the hook part 5 is provided with a through hole for the locking bolt 131 to pass through, and the other end of the hook part 5 is provided with a hook circular hole 51.

[0043] The square frame 1 designed as above has a simple structure and is firm and stable. It is compact and occupies little space, and is suitable for installation on the boom 200 .

[0044] In this embodiment, the clamping assembly 4 includes a clamping arm 41, two groups of rope-pressing rollers 42, a torsion spring 43 and an adjusting barrier 44. The bottom of the clamping arm 41 is rotatably connected to the middle of the bottom rod 13. The bottom rod 13 and the clamping arm 41 are arranged vertically. The two groups of rope-pressing rollers 42 are rotatably assembled on both sides of the top of the clamping arm 41 respectively. The rope-pressing rollers 42 are parallel to the central axis of the bottom rod 13. The adjusting barrier 44 is provided on the bottom rod 13. One leg of the torsion spring 43 is inserted into the adjusting barrier 44. The other leg of the torsion spring 43 is pressed against the outer side of the clamping arm 41. The torsion spring 43 is sleeved on the bottom rod 13. The clamping arm 41 is a plate-like structure and the outer side of the clamping arm 41 is provided with an inclined pressure surface 411 adapted to the other leg of the torsion spring 43. The rope-pressing roller 42 is a stainless steel part.

[0045] The adjusting barrier 44 includes a U-shaped clip 441 and an adjusting bolt 442. The U-shaped clip 441 is sleeved on the bottom rod 13. The adjusting bolt 442 is threadedly assembled at the opening of the U-shaped clip 441 and is used to shrink the opening of the U-shaped clip 441. The end of the U-shaped clip 441 away from the opening is provided with a socket for adapting to one leg of the torsion spring 43.

[0046] The clamping assembly 4 designed above has a simple structure and stable operation. It can always drive the rope pressing roller 42 to press the auxiliary lifting rope wound on the winding shaft 2 through the elastic restoring force of the torsion spring 43. At the same time, the position of the adjusting baffle 44 can be changed according to the wear condition of the rope pressing roller 42, thereby adjusting the elastic force of the torsion spring 43, which has better adaptability.

[0047] This embodiment also provides a winch crane, please refer to Figure 3 , including the above-mentioned auxiliary hoisting mechanism 300 for the boom, the crane body 100 and the boom 200, the boom 200 is installed on the crane body 100, and the auxiliary hoisting mechanism 300 for the boom is installed at the bottom of the boom 200.

[0048] The beneficial technical effects of the auxiliary hoisting mechanism for the boom and the hoisting crane of the embodiment of the present application are roughly as follows:

[0049] The clamping assembly 4 can tighten the auxiliary lifting rope on the winding shaft 2 at any time to prevent the auxiliary lifting rope from loosening. When not in use, the auxiliary hook at the end of the auxiliary lifting rope can be temporarily fixed by the hook part 5, which effectively prevents the auxiliary lifting hook from shaking at will. The overall structure is firm, stable and compact, occupies little space, and is suitable for installation on the boom 200 to cooperate with the winch crane to lift small cargoes under special circumstances.

[0050] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the scope of protection of the present application.

Claims

1. An auxiliary hoisting mechanism for a boom, characterized in that: The utility model comprises a square frame (1), a winding shaft (2), an auxiliary motor (3), a clamping assembly (4) and a hook portion (5); the top of the square frame (1) is used to connect to the bottom of the boom (200) of the fixed hoisting crane; the winding shaft (2) is rotatably assembled in the square frame (1); the auxiliary motor (3) is installed on the outer side of the square frame (1); and the output shaft of the auxiliary motor (3) is connected to the winding shaft (2) to drive the winding shaft (2) to rotate and reel in the auxiliary rope; the clamping assembly (4) is installed on one side of the bottom of the square frame (1) and is used to clamp the auxiliary rope wound on the winding shaft (2); the hook portion (5) is installed on the other side of the bottom of the square frame (1) and is used to be hung by the auxiliary hook at the end of the auxiliary rope.

2. The auxiliary hoisting mechanism for a boom according to claim 1, characterized in that: The square frame (1) comprises two side panels (11), two mounting plates (12) and two bottom rods (13); the mounting plate (12) is vertically connected between the two side panels (11); the two mounting plates (12) are respectively located on both sides of the top of the square frame (1); a plurality of bolt holes (121) are provided on the mounting plate (12); the bottom rod (13) is vertically connected between the two side panels (11); the two bottom rods (13) are respectively located on both sides of the bottom of the square frame (1); the clamping assembly (4) and the hook portion (5) are respectively installed on the two bottom rods (13).

3. The auxiliary hoisting mechanism for a boom according to claim 2, characterized in that: Both ends of the bottom rod (13) are threadedly assembled with locking bolts (131) along the central axis, and the bottom of the side plate (11) is provided with an ear plate (111) for the locking bolts (131) to pass through.

4. The auxiliary hoisting mechanism for a boom according to claim 3, characterized in that: The hook portion (5) is a plate-shaped structure and is clamped between one of the side plates (11) and the locking bolt (131). The periphery of the hook portion (5) is an arc-shaped structure. One end of the hook portion (5) is provided with a through hole for the locking bolt (131) to pass through, and the other end of the hook portion (5) is provided with a hook circular hole (51).

5. The auxiliary hoisting mechanism for a boom according to claim 4, characterized in that: The hook portion (5) and the auxiliary motor (3) are respectively installed on opposite sides of the square frame (1).

6. The auxiliary hoisting mechanism for a boom according to claim 2, characterized in that: The clamping assembly (4) comprises a clamping arm (41), two groups of rope-pressing rollers (42), a torsion spring (43) and an adjusting barrier (44); the bottom of the clamping arm (41) is rotatably connected to the middle of the bottom rod (13); the bottom rod (13) and the clamping arm (41) are arranged vertically; the two groups of rope-pressing rollers (42) are rotatably assembled on both sides of the top of the clamping arm (41); the rope-pressing rollers (42) are parallel to the central axis of the bottom rod (13); the adjusting barrier (44) is arranged on the bottom rod (13); one leg of the torsion spring (43) is inserted into the adjusting barrier (44); the other leg of the torsion spring (43) is pressed against the outer side of the clamping arm (41); and the torsion spring (43) is sleeved on the bottom rod (13).

7. The auxiliary hoisting mechanism for a boom according to claim 6, characterized in that: The adjusting baffle (44) comprises a U-shaped clip (441) and an adjusting bolt (442); the U-shaped clip (441) is sleeved on the bottom rod (13); the adjusting bolt (442) is threadedly assembled at the opening of the U-shaped clip (441) and is used to shrink the opening of the U-shaped clip (441); and the end of the U-shaped clip (441) away from the opening is provided with a socket adapted to fit one leg of the torsion spring (43).

8. The auxiliary hoisting mechanism for a boom according to claim 6, characterized in that: The pressing arm (41) is a plate-shaped structure, and an inclined pressing surface (411) adapted to fit the other leg of the torsion spring (43) is provided on the outer side of the pressing arm (41).

9. The auxiliary hoisting mechanism for a boom according to claim 6, characterized in that: The rope pressing roller (42) is made of stainless steel.

10. A winch crane, characterized in that: The invention comprises an auxiliary hoisting mechanism (300) for a boom as described in any one of claims 1 to 9, a crane body (100) and a boom (200), wherein the boom (200) is mounted on the crane body (100), and the auxiliary hoisting mechanism (300) for the boom is mounted on the bottom of the boom (200).

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