A crane spare wheel placing structure and a spare wheel dismounting method

Abstract

The application discloses a crane spare wheel placing structure and a spare wheel dismounting method in the technical field of crane vehicles, and aims to solve the problem that the traditional spare tire frame cannot be applied to the spare wheel placing of the crane vehicle in the prior art. The crane spare wheel placing structure comprises a matching carrier (4) and a spare wheel lifting mechanism. The spare wheel lifting mechanism drives the spare wheel (17) to lift, so as to place the spare wheel (17) on the matching carrier (4) or move the spare wheel (17) away from the matching carrier (4). The weight of the spare wheel (17) serves as the counterweight of the crane vehicle, so that the problem that the spare wheel (17) occupies the use space of other functional components and increases the overall weight of the vehicle and the fuel consumption is solved. The spare wheel lifting mechanism is arranged to rotate with the slewing mechanism (2) of the crane, so that the pure manual lifting of the spare wheel is replaced, and the dismounting difficulty of the spare wheel (17) is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a crane spare wheel placing structure and a spare wheel dismounting method, and belongs to the technical field of crane vehicles. BACKGROUND

[0002] In order to prevent the rotation mechanism from being hindered by the top of the frame, a space is designed on the top of the frame, and most of the functional components are arranged on the bottom of the frame. However, the spare wheel is large in size, and the available space on the bottom of the frame is limited, so the spare wheel cannot be placed on the bottom of the frame according to the design of the traditional engineering vehicle. Different from the traditional engineering vehicle, the crane vehicle is used to support load, and the spare wheel is generally between 100 and 300 kg, which is almost impossible to dismount by pure manpower. When the crane vehicle does not have tire damage or wheel damage, the spare wheel occupies the use space of other functional components and increases the weight of the whole vehicle, which increases fuel consumption. Therefore, how to reasonably place the spare wheel and reduce the dismounting difficulty is an important problem to be solved in the design of the crane vehicle.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present application and should not be taken as admitting that the information forms prior art that is already known to those of ordinary skill in the art. SUMMARY

[0004] The present application aims to overcome the deficiencies in the prior art, and provides a crane spare wheel placing structure and a spare wheel dismounting method which save spare wheel placing space and reduce the weight of the whole vehicle by using the spare wheel as a load.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] In a first aspect, a crane spare wheel placing structure includes a load carrier and a spare wheel lifting mechanism capable of rotating with the rotation mechanism of the crane.

[0007] The spare wheel lifting mechanism drives the spare wheel to lift to place the spare wheel on the load carrier or move the spare wheel away from the load carrier.

[0008] In the first aspect, further, the spare wheel lifting mechanism includes a winding drum and a hoisting rope wound on the winding drum, and the movable end of the hoisting rope is detachably connected with the spare wheel. The hoisting rope is reversely rotated by the winding drum to realize the lifting of the spare wheel.

[0009] In the first aspect, further, the winding drum is drivingly connected with the winch of the main lifting mechanism of the crane through a transmission mechanism.

[0010] The first aspect further comprises a telescopic device, a transmission shaft, a first gear and a second gear, the winding drum is sleeved on the transmission shaft and can rotate synchronously with the transmission shaft;

[0011] The second gear is fixed relative to the winch of the main lifting mechanism, the first gear is axially connected with the telescopic rod of the telescopic device through the transmission shaft, and the meshing or separation of the second gear and the first gear is realized through the telescoping of the telescopic rod.

[0012] The first aspect further comprises a support fixed relative to the winding drum of the transmission mechanism, and the transmission shaft is supported on the support.

[0013] The first aspect further comprises a cross-pressing plate connected to the movable end of the hoisting wheel rope, the cross-pressing plate can be supported on the spare wheel through the through hole in the middle of the spare wheel, so that the spare wheel is hoisted when the hoisting wheel rope is retracted.

[0014] The first aspect further comprises a concave structure matched with the shape of the spare wheel formed on the loading carrier, for wrapping and protecting the spare wheel.

[0015] The first aspect further comprises a spare wheel support fixed on the loading carrier through a fastener, and the spare wheel support is provided with a threaded hole for fixing the spare wheel.

[0016] The second aspect is a spare wheel dismounting method based on the spare wheel placing structure of any one of the first aspect, comprising:

[0017] When the spare wheel is dismounted, the slewing mechanism is used to drive the spare wheel lifting mechanism and the loading carrier carrying the spare wheel to rotate to a desired spare wheel dismounting position, the spare wheel is moved away from the loading carrier by the spare wheel lifting mechanism, and placed on the top of the crane frame, and the crane hook is used to hoist the spare wheel on the top of the crane frame to a position suitable for replacing the spare wheel;

[0018] When the spare wheel is mounted, the crane hook is used to hoist the spare wheel to the top of the crane frame, the slewing mechanism is used to drive the spare wheel lifting mechanism to rotate to the current position of the spare wheel, and the spare wheel is hoisted on the loading carrier by the spare wheel lifting mechanism.

[0019] The third aspect is a crane comprising the spare wheel placing structure of any one of the first aspect.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The application places the spare wheel in the matching carrier, and the weight of the spare wheel acts as the counterweight of the crane vehicle, which solves the problem that the spare wheel occupies the use space of other functional components and increases the overall weight of the vehicle and fuel consumption; the spare wheel lifting mechanism rotating with the rotating mechanism of the crane is arranged, which realizes replacing the pure manual lifting of the spare wheel and reduces the disassembly and assembly difficulty of the spare wheel; the spare wheel lifting mechanism takes power from the winch of the main lifting mechanism through the drum and realizes the lifting of the spare wheel through the hoisting wheel rope, and the spare wheel lifting mechanism does not need additional power device, which reduces the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the crane spare wheel placing structure provided by example one arranged on the crane vehicle;

[0023] Figure 2 is a schematic view of the power transmission of the spare wheel lifting mechanism structure in example one;

[0024] Figure 3 is Figure 2 is a schematic view of the relative fixation of the drum and the support;

[0025] Figure 4 is Figure 2 is a schematic view of the support of the spare wheel by the cross pressure plate when the hoisting wheel rope in the cross pressure plate lifts the spare wheel;

[0026] Figure 5 is Figure 1 is a structural schematic view of the matching carrier, the support and the fastener in

[0027] Figure 6 is a schematic view of the spare wheel placed in the matching carrier in Figure 5 ;

[0028] Figure 7 is a schematic view of the preparation of placing the spare wheel in the matching carrier when the crane vehicle spare wheel is installed in example two;

[0029] Figure 8 is a schematic view of hoisting the spare wheel to the top of the vehicle frame when the crane vehicle spare wheel is installed in example two

[0030] Figure 9 is a flowchart of the disassembly of the spare wheel from the matching carrier in example three;

[0031] Figure 10 is a flowchart of the installation of the spare wheel in the matching carrier after the hoisting of the spare wheel in example three;

[0032] In the figure: 1-frame; 2-rotary mechanism; 3-main lifting mechanism; 4-load balancing body; 5-winch; 6-transmission mechanism; 7-hoisting rope; 8-crossing plate; 9-first gear; 10-transmission shaft; 11-telescopic device; 12-winding drum; 13-support; 14-second gear; 15-support; 16-fastener; 17-back-up wheel; 18-gasket; 19-fastening bolt; 20-top of frame. DETAILED DESCRIPTION

[0033] The technical scheme of the present application will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical scheme of the present application, but not limitations of the technical scheme of the present application. In the case of no conflict, the technical features in the embodiments and the embodiments can be combined with each other. Embodiment one:

[0034] The embodiment provides a structure for placing a back-up wheel of a crane, to solve the problems of space occupation and weight increase of oil consumption in the prior art. With reference to Figure 1 , the structure comprises a load balancing body 4 for load balancing in a lifting operation, and a back-up wheel lifting mechanism for lifting the back-up wheel 17. When the back-up wheel lifting mechanism lifts the back-up wheel 17, the back-up wheel 17 can be placed on the load balancing body 4, and the weight of the back-up wheel 17 plays a role of load balancing in the whole crane lifting operation, and the placement of the back-up wheel 17 on the load balancing body 4 relieves the space tension at the bottom of the frame 1. The back-up wheel lifting mechanism can rotate with the rotary mechanism 2 of the crane, and when the back-up wheel 17 is needed, the rotary mechanism 2 rotates the back-up wheel lifting mechanism to the desired position, and the back-up wheel lifting mechanism moves the back-up wheel to the position where the back-up wheel is needed to be installed.

[0035] To realize the function of the back-up wheel lifting mechanism lifting the back-up wheel 17, with reference to Figure 2 , the back-up wheel lifting mechanism comprises a winding drum 12 and a hoisting rope 7 wound on the winding drum 12, and the hoisting rope 7 has a movable end detachably connected with the back-up wheel 17; the winding drum 12 rotates forward or reversely according to the winding direction of the hoisting rope 7 on the winding drum 12, and the hoisting rope 7 lifts the back-up wheel 17 by means of the rotation of the winding drum 12.

[0036] The movable end of the hoisting rope 7 can be detachably connected with the back-up wheel 17 by means of binding or connecting with the bolt hole on the back-up wheel 17; but considering economy, reliability and convenience, with reference to Figure 2 and Figure 4In the embodiment, the movable end of the hoisting wheel rope 7 is provided with a horizontal pressing plate 8; the length of the horizontal pressing plate 8 is greater than the inner diameter of the spare wheel 17, but the width of the horizontal pressing plate 8 is less than the inner diameter of the spare wheel 17, so that the horizontal pressing plate 8 can pass through the inner ring of the spare wheel 17; after the horizontal pressing plate 8 passes through the spare wheel 17, the horizontal pressing plate 8 is adjusted to the posture shown in the figure, supporting the spare wheel 17, so that the hoisting wheel rope 7 controls the lifting of the spare wheel 17. Figure 4 The hoisting wheel rope 7 controls the lifting of the spare wheel 17.

[0037] Considering that it is not suitable to set a power device at the load distribution body 4, and further considering cost reduction and efficiency improvement, referring to Figure 2 , a transmission mechanism 6 is set for the winding drum 12 to be connected to the power of the winch 5 of the hoisting mechanism 3; the forward and reverse rotation function of the winch 5 for hoisting operation can be used to realize the function of the winding drum 12. The transmission mechanism 6 includes a first gear 9, a second gear 14, a transmission shaft 10 and an extension device 11: considering that the load distribution body 4 is close to the winch 5, the second gear 14 is fixed relative to the winch 5 of the main hoisting mechanism 3, and the first gear 9 is connected to the extension rod shaft of the extension device 11 through the transmission shaft 10; the winding drum 12 is sleeved on the transmission shaft 10 and can rotate synchronously with the transmission shaft 10; the meshing or separation of the second gear 14 and the first gear 9 is realized by the extension of the extension rod, and then the winding drum 12 is connected to the power of the winch 5 of the hoisting mechanism 3 for transmission; large engineering machinery usually has a set of gas pressure control system, so in the embodiment, the extension cylinder is selected as the extension device 11; the gas pressure control system can control the winding drum 12 of the transmission mechanism 6 to be connected to the power of the winch 5 of the hoisting mechanism 3 for transmission, so as to realize the transmission and disconnection of the power between the winch 5 and the winding drum 12, and then realize the control of the lifting of the spare wheel 17. When the hoisting wheel rope 7 is lifted, the spare wheel 17 will generate a larger load on the winding drum 12, so referring to Figure 3 , the spare wheel lifting mechanism also includes a support 13 fixed relative to the winding drum 12 of the transmission mechanism 6, and the transmission shaft 10 is supported on the support 13, so as to improve the load capacity of the winding drum 12.

[0038] In the embodiment, considering that the spare wheel 17 is provided with a general connecting bolt hole connected with the axle, referring to Figure 5 and Figure 6The spare wheel support 15 is fixed on the matching carrier 14 by the fastener 16, a threaded hole reserved on the spare wheel support 15 matches a bolt hole of the spare wheel 17, and then the spare wheel 17 can be fixed by the fastening bolt 19 and the gasket 18, so that the spare wheel 17 can be reliably placed on the matching carrier 14, and the spare wheel support 15 can be matched with different spare wheels 17 by changing the type and size of the spare wheel support 15; the technical scheme improves the compatibility of the crane spare wheel placing structure provided in the embodiment, and facilitates single-person pure manpower to quickly install.

[0039] Reference Figure 5 In the embodiment, the matching carrier 14 is provided with a concave structure matching the shape of the spare wheel 17, for wrapping and protecting the spare wheel 17.

[0040] The prior art spare wheel is fixed on a spare tire frame, and the spare tire frame is horizontally placed at the bottom, rear or top of the vehicle body, and is only suitable for commercial heavy trucks and passenger cars. This design does not consider the heavy characteristics of the crane vehicle wheel, and does not consider that the top of the crane vehicle frame needs to be left empty for the slewing mechanism to rotate. The crane spare wheel placing structure provided in the embodiment places the spare wheel 17 on the matching carrier 4, and uses the heavy characteristics of the crane vehicle wheel to make the weight of the spare wheel 17 serve as the counterweight of the crane vehicle, so as to solve the problem that the spare wheel 17 occupies the use space of other functional components and increases the overall weight of the vehicle, thereby increasing fuel consumption. The spare wheel lifting mechanism rotating with the slewing mechanism 2 of the crane is provided, so as to realize the replacement of pure manpower to lift the spare wheel and reduce the disassembly and assembly difficulty of the spare wheel 17. The spare wheel lifting mechanism takes power from the winch 5 of the main hoisting mechanism 3 through the drum 12, and lifts and lowers the spare wheel 17 by means of the hoisting wheel rope 7. The spare wheel lifting mechanism does not need an additional power device, thereby reducing the manufacturing cost.

[0041] The spare wheel 17 mentioned in the embodiment can make the spare tire of the wheel crane also be a spare track wheel of the crawler crane. Embodiment two

[0042] The embodiment provides a disassembly and assembly method of the crane spare wheel placing structure provided in the embodiment one, and the operation direction and flow shown in Figure 7 、 Figure 8 、 Figure 9 and Figure 10 include:

[0043] When the spare wheel 17 is disassembled, the slewing mechanism 2 is used to drive the spare wheel lifting mechanism and the carrier 4 carrying the spare wheel 17 to rotate to a desired spare wheel disassembly position; the spare wheel lifting mechanism is used to move the spare wheel 17 away from the carrier 4 and place the spare wheel 17 on the top of the crane frame 20; the crane hook is used to hoist the spare wheel 17 on the top of the crane frame 20 to a position suitable for replacing the spare wheel;

[0044] When the spare wheel 17 is installed, the crane hook is used to hoist the spare wheel 17 to the top of the crane frame 20; the slewing mechanism 2 is used to drive the spare wheel lifting mechanism to rotate to a position where the spare wheel 17 is currently placed, and the spare wheel lifting mechanism is used to hoist the spare wheel 17 on the carrier 4.

[0045] Considering that the top of the crane frame 20 itself is suitable as a platform for disassembling and assembling the spare wheel 17, referring to Figure 8 and Figure 7 , the crane hook can first hoist the spare wheel 17 to the top of the crane frame 20, and the slewing mechanism 2 drives the spare wheel lifting mechanism to rotate to the top of the crane frame 20, which can facilitate personnel to quickly install the spare wheel 17. Embodiment three:

[0046] This embodiment provides a crane, as shown in Figure 1 , comprising the crane spare wheel placing structure provided in embodiment one. Since the same technical solution as in embodiment one is described, it will not be repeated here.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0048] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connected", "connecting" should be construed broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] The above is only the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can also be made, these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A crane spare wheel placing structure comprising a load carrier (4) for the counterweighting of a load for a hoisting operation, characterized in that, Also included is a spare wheel lifting mechanism capable of rotating with the slewing mechanism (2) of the crane; The spare wheel lifting mechanism drives the spare wheel (17) to lift, so as to place the spare wheel (17) on the load carrier (4) or move the spare wheel (17) away from the load carrier (4); when the spare wheel (17) is placed on the load carrier (4), the weight of the spare wheel (17) plays the role of counterweight balance in the whole vehicle lifting operation; The spare wheel lifting mechanism includes a winding drum (12) and a hoisting rope (7) wound on the winding drum (12); the hoisting rope (7) is reversed by the winding drum (12) to realize the lifting of the spare wheel (17); The winding drum (12) is drivingly connected with the winch (5) of the main lifting mechanism (3) of the crane through a transmission mechanism (6); The transmission mechanism (6) includes an extension device (11), a transmission shaft (10), a first gear (9) and a second gear (14); the winding drum (12) is sleeved on the transmission shaft (10) and can rotate synchronously with the transmission shaft (10); The second gear (14) is fixed relative to the winch (5) of the main lifting mechanism (3); the first gear (9) is axially drivingly connected with the extension rod of the extension device (11) through the transmission shaft (10); the meshing or separation of the second gear (14) and the first gear (9) is realized through the extension of the extension rod.

2. Crane spare wheel placing structure according to claim 1, characterized in that, The movable end of the hoisting rope (7) is detachably connected with the spare wheel (17).

3. Crane spare wheel placing structure according to claim 1, characterized in that, The spare wheel lifting mechanism further includes a support (13) fixed relative to the winding drum (12) of the transmission mechanism (6); the transmission shaft (10) is supported on the support (13).

4. Crane spare wheel placing structure according to claim 2 or 3, characterized in that, The movable end of the hoisting rope (7) is connected with a transverse pressing plate (8); the transverse pressing plate (8) can be supported in the middle of the spare wheel (17) through the through hole in the middle of the spare wheel (17) to hoist the spare wheel (17) when the hoisting rope (7) is retracted.

5. Crane spare wheel placing structure according to claim 1, characterized in that, A concave structure matching the shape of the spare wheel (17) is formed on the load carrier (4) to wrap and protect the spare wheel (17).

6. Crane spare wheel placing structure according to claim 1 or 5, characterized in that, A spare wheel support (15) is fixed on the load carrier (4) by a fastener (16); a threaded hole for fixing the spare wheel (17) is reserved on the spare wheel support (15).

7. A method for mounting and dismounting a spare wheel of a crane according to any one of claims 1 to 6, characterized in that, The spare wheel (17) is removed; the spare wheel lifting mechanism and the load carrier (4) carrying the spare wheel (17) are driven to rotate to a desired spare wheel removal position by the slewing mechanism (2); the spare wheel (17) is moved away from the load carrier (4) by the spare wheel lifting mechanism and placed on the top of the crane frame (20); the spare wheel (17) on the top of the crane frame (20) is hoisted to a position suitable for replacing the spare wheel by the crane hook. ​ When the spare wheel (17) is installed, the spare wheel (17) is hoisted to the top of the frame (20) by the crane hook; the rotation mechanism (2) is used to drive the spare wheel lifting mechanism to rotate to the current position of the spare wheel (17), and the spare wheel (17) is hoisted on the load distribution body (4) by the spare wheel lifting mechanism.

8. A crane, characterized in that The crane spare wheel placing structure comprises the crane spare wheel lifting mechanism according to any one of claims 1 to 6.

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