Crane capable of adjusting lifting stroke

Abstract

The utility model relates to the technical field of cranes, and discloses a crane capable of adjusting the lifting stroke, which comprises a body, a movable frame and an extension frame, two groups of adjusting mechanisms are arranged between the body and the movable frame, the movable frame is movably connected to the top of the body through the adjusting mechanisms, and the extension frame is movably connected to the body through the adjusting mechanisms. The other set of adjusting mechanism is installed between the top of the movable frame and the bottom of the extension frame, the extension frame is movably connected to the top of the movable frame through the adjusting mechanism, and a hoisting mechanism is arranged at the top of the extension frame. According to the crane stroke adjusting device, the adjusting mechanism is arranged, specifically, the clamping block is installed in the fixing piece through the second spring, so that the clamping block can be clamped into the clamping groove in the bottom of the sliding rod, the sliding rod is fixed and limited, the sliding rod is prevented from sliding freely in the lifting process, fixing is more convenient after the crane stroke is adjusted, and using is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane, especially a crane with adjustable lifting stroke. BACKGROUND

[0002] The crane is a kind of lifting and carrying machinery widely used in port, workshop, power, site and other places.The crane is the common name of crane, and is one kind of hoisting machinery.Usually, the main crane is still automobile crane, caterpillar crane and tire crane, and the relatively small crane is mainly used in factory to lift and carry the material in factory.

[0003] In the traditional crane, the crane with manually adjustable lifting stroke is usually inconvenient to be fixed and limited after adjustment, and the use is not convenient enough. UTILITY MODEL CONTENT

[0004] The utility model discloses a crane with adjustable lifting stroke, which aims to solve the technical problem that the crane with manually adjustable lifting stroke is usually inconvenient to be fixed and limited after adjustment in the crane.

[0005] In order to realize the above-mentioned utility model purpose, the utility model discloses a crane with adjustable lifting stroke including car body, moving frame and extension frame, the adjusting mechanism is installed between the car body and the moving frame, the moving frame is movably connected on the top of the car body through the adjusting mechanism, the adjusting mechanism is provided with two groups, the adjusting mechanism of another group is installed between the top of the moving frame and the bottom of the extension frame, the extension frame is movably connected on the top of the moving frame through the adjusting mechanism, the top of the extension frame is provided with lifting mechanism.

[0006] Further, the adjusting mechanism includes fixing piece, connecting piece and slide rod, the slide groove is formed in the inside of the fixing piece, the slide rod is slidably connected in the inside of the slide groove, the connecting piece is fixedly installed on the top of the slide rod, the recess is formed in the top of the slide groove and matched with the connecting piece, and the recess is communicated with the slide groove.

[0007] Further, the movable cavity is formed in the inner wall of the slide groove, the first spring is fixedly installed on the inner wall of the movable cavity, and the one end of the first spring is fixedly installed with the pressing plate.

[0008] Further, the pressing plate is movably connected in the inside of the movable cavity through the first spring, and the pressing plate is matched with the side wall of the slide rod.

[0009] Further, the installation cavity is formed in the bottom of the inner wall of the slide groove, the second spring is fixedly installed on the inner wall of the installation cavity, and the one end of the second spring is fixedly installed with the clamping block.

[0010] Further, the slide rod bottom is provided with a clamping groove, the clamping groove is matched with the clamping block, and the clamping groove is provided with a plurality of clamping grooves.

[0011] Further, the lifting mechanism comprises a winding disc, a first guide wheel, a second guide wheel, a lifting hook and a connecting rope, the winding disc is rotationally connected to the top of the extension frame, the first guide wheel is rotationally connected to the top of the extension frame, the second guide wheel is rotationally connected to one end of the extension frame, the connecting rope is wound on the side wall of the winding disc, and one end of the connecting rope is connected with the lifting hook.

[0012] Further, the extension frame top is fixedly provided with a servo motor, and the winding disc is fixedly installed on the output end of the servo motor.

[0013] Further, the extension frame bottom is provided with a guide mechanism.

[0014] Further, the guide mechanism comprises a fixed frame, a guide ring, a third spring and a protection piece, the fixed frame is fixedly installed on the top of the extension frame, the guide ring is fixedly installed on the top of the fixed frame, the protection piece is movably connected to the inside of the guide ring through the third spring, and the protection piece is a ring-shaped piece.

[0015] Advantageous effects:

[0016] The crane with adjustable lifting stroke is characterized in that the adjusting mechanism is arranged, specifically, the clamping block is installed in the fixing piece through the second spring, the clamping block can be clamped into the clamping groove in the bottom of the slide rod, the slide rod is fixed and limited, random sliding of the slide rod in the lifting process is avoided, and the crane is more convenient to fix and use after stroke adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is the external structure schematic diagram of the utility model;

[0018] Fig. 2 is the adjusting mechanism sectional structure schematic diagram of the utility model;

[0019] Fig. 3 is the guide ring internal structure schematic diagram of the utility model;

[0020] Among them:

[0021] 1, car body; 2, moving frame; 3, adjusting mechanism; 301, fixed part; 302, connecting part; 303, sliding rod; 304, sliding groove; 305, movable cavity; 306, first spring; 307, pressing plate; 308, mounting cavity; 309, second spring; 310, clamping block; 311, clamping groove; 4, extension frame; 5, servo motor; 6, winding disc; 7, fixed frame; 701, guide ring; 702, third spring; 703, protection part; 8, first guide wheel; 9, second guide wheel; 10, lifting hook; 11, connecting rope;

[0022] The realization, functional features and advantages of the utility model will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

[0024] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] In the description of the utility model, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connection" and "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature "on", "above" and "on" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that first feature is higher than second feature in horizontal height.First feature "under", "below" and "under" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that first feature is lower than second feature in horizontal height.

[0027] Referring to Figs. 1-3 The utility model discloses an adjustable hoisting stroke's crane of one embodiment includes car body 1, moving frame 2 and extension frame 4, and the adjusting mechanism 3 is installed between car body 1 and moving frame 2, and moving frame 2 is movably connected at the top of car body 1 through adjusting mechanism 3, and adjusting mechanism 3 is provided with two groups, and the other adjusting mechanism 3 is installed between the top of moving frame 2 and the bottom of extension frame 4, and extension frame 4 is movably connected at the top of moving frame 2 through adjusting mechanism 3, and the top of extension frame 4 is provided with lifting mechanism;

[0028] Among them, adjusting mechanism 3 includes fixed part 301, connecting piece 302 and slide bar 303, and the inside of fixed part 301 is provided with sliding groove 304, and slide bar 303 is slidably connected in the inside of sliding groove 304, and connecting piece 302 is fixedly installed at the top of slide bar 303, and the top of sliding groove 304 is provided with recess that is matched with connecting piece 302, and the recess is communicated with sliding groove 304, and the bottom of the inner wall of sliding groove 304 is provided with installation cavity 308, and second spring 309 is fixedly installed in the inner wall of installation cavity 308, and one end of second spring 309 is fixedly installed with clamping block 310, and the bottom of slide bar 303 is provided with clamping groove 311, and clamping groove 311 is matched with clamping block 310, and clamping groove 311 is provided with several;

[0029] The utility model discloses an adopted clamping block 310 is installed in fixed part 301 through second spring 309, makes clamping block 310 can be clamped into the bottom clamping groove 311 of slide bar 303, fixes the position of slide bar 303, avoids the arbitrary sliding of slide bar 303 in the process of lifting, makes crane stroke adjustment more convenient after fixed, uses more convenient, and clamping block 310 and clamping groove 311 are all arc, can fix slide bar 303 under the condition that the sliding of slide bar 303 is not influenced, and the installation of fixed part 301 in adjusting mechanism 3 between car body 1 and moving frame 2 is at the top of car body 1, and the installation of connecting piece 302 is at the bottom of moving frame 2, and in adjusting mechanism 3 between moving frame 2 and extension frame 4, the installation of fixed part 301 is at the top of moving frame 2, and the installation of connecting piece 302 is at the bottom of extension frame 4, and the hoisting stroke of crane can be adjusted through the sliding of slide bar 303 in the inside of fixed part 301.

[0030] In an embodiment, the inner wall of the sliding groove 304 is provided with a movable cavity 305, the inner wall of the movable cavity 305 is fixedly provided with a first spring 306, one end of the first spring 306 is fixedly provided with a pressing plate 307, the pressing plate 307 is movably connected to the inside of the movable cavity 305 through the first spring 306, and the pressing plate 307 is matched with the side wall of the sliding rod 303.

[0031] The embodiment is provided with the first spring 306, which can support the pressing plate 307, the sliding rod 303 in the sliding groove 304 can be pressed downward through the pressing plate 307, so that the sliding rod 303 can be prevented from being separated from the sliding groove 304.

[0032] In an embodiment, the lifting mechanism comprises a winding disc 6, a first guide wheel 8, a second guide wheel 9, a lifting hook 10 and a connecting rope 11, the winding disc 6 is rotatably connected to the top of the extension frame 4, the first guide wheel 8 is rotatably connected to the top of the extension frame 4, the second guide wheel 9 is rotatably connected to one end of the extension frame 4, the connecting rope 11 is wound on the side wall of the winding disc 6, one end of the connecting rope 11 is connected to the lifting hook 10, a servo motor 5 is fixedly installed on the top of the extension frame 4, and the winding disc 6 is fixedly installed on the output end of the servo motor 5.

[0033] The embodiment is provided with the winding disc 6, which can wind the connecting rope 11, the first guide wheel 8 and the second guide wheel 9 are provided to install the connecting rope 11, so that the connecting rope 11 moves on the side wall of the guide wheel, the servo motor 5 is provided to control the rotation of the winding disc 6, so that the movement of the lifting hook 10 can be controlled, and the lifting is facilitated.

[0034] In an embodiment, the extension frame 4 is provided with a guide mechanism, the guide mechanism comprises a fixed frame 7, a guide ring 701, a third spring 702 and a protection piece 703, the fixed frame 7 is fixedly installed on the top of the extension frame 4, the guide ring 701 is fixedly installed on the top of the fixed frame 7, the protection piece 703 is movably connected to the inside of the guide ring 701 through the third spring 702, and the protection piece 703 is an annular piece.

[0035] The embodiment is provided with the fixed frame 7, which can fix the position of the guide ring 701, the third spring 702 is provided to make the protection piece 703 move in the guide ring 701, so that the connecting rope 11 has a certain buffer space in the guide ring 701, and the protection piece 703 can be used to protect the connecting rope 11.

[0036] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation in the utility model specification and the attached drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A crane with adjustable hoisting stroke, characterized in that, The utility model provides a kind of movable frame (2) and extension frame (4) including vehicle body (1), adjusting mechanism (3) is installed between the vehicle body (1) and the movable frame (2), the movable frame (2) is movably connected in the top of the vehicle body (1) by the adjusting mechanism (3), the adjusting mechanism (3) is provided with two groups, another group of the adjusting mechanism (3) is installed between the top of the movable frame (2) and the bottom of the extension frame (4), the extension frame (4) is movably connected in the top of the movable frame (2) by the adjusting mechanism (3), hoisting mechanism is provided in the top of the extension frame (4).

2. A crane with adjustable hoisting travel according to claim 1, characterized in that The adjusting mechanism (3) includes a fixing member (301), a connecting member (302) and a sliding rod (303), the fixing member (301) has a sliding groove (304) formed in the inside thereof, the sliding rod (303) is slidably connected in the sliding groove (304), the connecting member (302) is fixedly installed on the top of the sliding rod (303), and a recess is formed in the top of the sliding groove (304) and matched with the connecting member (302), and the recess is communicated with the sliding groove (304).

3. A crane with adjustable hoisting travel according to claim 2, characterized in that An active cavity (305) is formed in the inner wall of the sliding groove (304), a first spring (306) is fixedly installed on the inner wall of the active cavity (305), and a pressing plate (307) is fixedly installed on one end of the first spring (306).

4. A crane with adjustable hoisting travel according to claim 3, characterized in that The pressing plate (307) is movably connected in the active cavity (305) by the first spring (306), and the pressing plate (307) is matched with the side wall of the sliding rod (303).

5. A crane with adjustable hoisting travel according to claim 2, characterized in that An installation cavity (308) is formed in the bottom of the inner wall of the sliding groove (304), a second spring (309) is fixedly installed on the inner wall of the installation cavity (308), and a clamping block (310) is fixedly installed on one end of the second spring (309).

6. A crane with adjustable hoisting travel according to claim 5, characterized in that A clamping groove (311) is formed in the bottom of the sliding rod (303), the clamping groove (311) is matched with the clamping block (310), and a plurality of clamping grooves (311) are formed.

7. The crane of claim 1, wherein, The hoisting mechanism includes a winding disc (6), a first guide wheel (8), a second guide wheel (9), a lifting hook (10) and a connecting rope (11), the winding disc (6) is rotatably connected in the top of the extension frame (4), the first guide wheel (8) is rotatably connected in the top of the extension frame (4), the second guide wheel (9) is rotatably connected on one end of the extension frame (4), the connecting rope (11) is wound on the side wall of the winding disc (6), and one end of the connecting rope (11) is connected with the lifting hook (10).

8. A crane with adjustable hoisting travel according to claim 7, characterized in that A servo motor (5) is fixedly installed on the top of the extension frame (4), and the winding disc (6) is fixedly installed on the output end of the servo motor (5).

9. The crane of claim 1, wherein, A guide mechanism is arranged on the bottom of the extension frame (4).

10. A crane with adjustable hoisting travel according to claim 9, characterized in that The guiding mechanism comprises a fixing frame (7), a guide ring (701), a third spring (702) and a protection piece (703), the fixing frame (7) is fixedly installed at the top of the extension frame (4), the guide ring (701) is fixedly installed at the top of the fixing frame (7), the protection piece (703) is movably connected in the guide ring (701) through the third spring (702), and the protection piece (703) is an annular piece.

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