Hoisting mechanism

Abstract

The utility model relates to a hoisting mechanism and belongs to the technical field of truck-mounted crane production. Comprising a vehicle body with a cab, a chassis walking mechanism is installed below the vehicle body, a truck-mounted crane is fixedly installed on the vehicle body and located on the rear side of the cab, oil cylinder supporting legs are arranged on the two sides of the vehicle body, and each oil cylinder supporting leg comprises a cylinder body fixed to the vehicle body. The cylinder body is provided with a piston rod capable of extending or retracting relative to the cylinder body, the telescopic end of the bottom of the piston rod is provided with a supporting leg disc through a ball head, and the supporting leg disc is provided with a folding pillow plate mechanism. Compared with the prior art, the folding type base plate has the advantages that an operator can rotate the folding type base plate from a vertical state to a horizontal state, the supporting leg disc can slide into the second sliding rail from the first horizontal sliding rail, the folding type base plate larger than the main base plate in area is arranged below the supporting leg disc in a cushioned mode, the folding type base plate is supported on the ground, the stress face of the supporting leg disc is enlarged, and therefore the supporting leg disc is more stable. And the same effect of padding a base plate is achieved.

Description

Technical Field

[0001] The utility model relates to a hoisting mechanism and belongs to the technical field of truck crane production. Background Art

[0002] The outrigger is one of the main components of a truck crane. Its function is to increase the supporting base of the crane, reduce the burden on the tires, improve the anti-overturning stability of the vehicle, and increase the lifting capacity.

[0003] Patent No. CN201721734002.9 discloses a truck-mounted crane. A hydraulic outrigger device is provided on the lower base of the truck-mounted crane, and the hydraulic support device includes an outrigger oil cylinder and an outrigger, and the outrigger includes a base clamped on the transmission end of the outrigger oil cylinder and a pad fixed to the bottom of the base, and the pad includes an upper cover, a lower cover and an annular space therebetween, and a telescopic plate is installed in the annular space, and the fixing seat of the telescopic plate is located at the center of the pad and connected to the base, and the telescopic plate radiates outward from the center of the pad, and the thickness of the telescopic plate is the same as the height of the annular space.

[0004] Although the above patent can realize the function of truck crane, the current technical consideration is not comprehensive and has the following disadvantages: Figure 6 The outrigger plates on conventional oil cylinder outriggers usually have a small support surface. When performing hoisting operations, measures need to be taken to ensure the stability of the machinery. Generally, pads or sleepers are used to expand the force-bearing surface of the outrigger plates to increase the force-bearing area of ​​the crane oil cylinder outriggers and ensure their stability.

[0005] At present, the process of finding and installing the pads is relatively cumbersome and troublesome, and the pads or sleepers are directly piled up on the car body, which is very easy to be lost.

[0006] In order to solve one of the above problems, a hoisting mechanism is urgently needed. Utility Model Content

[0007] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: how to realize the switching of the leg plate between the main pad and the folding pad. The folding pad with a larger area than the main pad is arranged under the leg plate, and the folding pad is supported on the ground to expand the force-bearing surface of the leg plate and achieve the same effect as the pad. For this purpose, a lifting mechanism is provided.

[0008] The lifting mechanism described in the utility model includes a vehicle body with a cab, a chassis walking mechanism is installed below the vehicle body, a truck crane is fixedly installed on the vehicle body, the truck crane is located on the rear side of the cab, and cylinder legs are arranged on both sides of the vehicle body. It is characterized in that: the cylinder legs include a cylinder body fixed on the vehicle body, the cylinder body has a piston rod that can be extended or retracted relative to the cylinder body, the bottom telescopic end of the piston rod is installed with a leg plate through a ball head, and the leg plate is installed with a folding pillow plate mechanism.

[0009] The utility model improves the folding pillow plate mechanism and is detachably mounted on the oil cylinder support leg. The process of arranging the cushion plate is simple and the cushion plate is not easily lost.

[0010] Preferably, the folding pillow plate mechanism includes a main pad and a folding pad hingedly connected to one end of the main pad, the main pad is provided with a first horizontal slide rail that slides with the leg plate, and the folding pad is provided with a second slide rail along its length direction. The folding pad can be rotated from a horizontal state to a vertical state or from a vertical state to a horizontal state relative to the main pad. When the first horizontal slide rail and the second slide rail are in the same horizontal plane, the leg plate can slide from the first horizontal slide rail into the second slide rail or from the second slide rail into the first horizontal slide rail.

[0011] Preferably, the length of the foldable pad is greater than the length of the main pad.

[0012] Preferably, the first horizontal slide rail includes a first side and a second side, the first side and the second side are arranged relatively spaced apart, and enclose the main pad to form a slide groove A opened along the length direction of the main pad, and the leg plate can slide in the slide groove A. The structure is reasonable and the processing is convenient.

[0013] Preferably, the second slide rail includes a third side and a fourth side, the third side and the fourth side are arranged relatively spaced apart, and enclose the foldable pad to form a slide groove B opened along the length direction of the foldable pad, and the leg plate can slide in the slide groove B. The structure is reasonable and the processing is convenient.

[0014] Preferably, the first side and the second side adopt angle iron with L-shaped cross section, and the first side and the second side are welded to the surface of the main pad; the third side and the fourth side adopt angle iron with L-shaped cross section, and the third side and the fourth side are welded to the surface of the foldable pad. It is convenient to obtain materials and process.

[0015] Preferably, an iron chain is installed at one end of the folding pad away from the main pad through a lifting ear A, and a mountaineering lock is provided at the other end of the iron chain. A lifting ear B is provided on the cylinder body of the cylinder leg. When the folding pad is rotated from a horizontal state to a vertical state relative to the main pad, the mountaineering lock can be detachably hung on the lifting ear B.

[0016] The foldable pad is rotated from a horizontal state to a vertical state, and is fixed on the oil cylinder legs through the lifting lugs A, iron chains, mountaineering locks, and lifting lugs B. After the oil cylinder legs are retracted, the travel of the vehicle body is not affected.

[0017] Preferably, the main pad and the folding pad are connected by hinged joints, and 2-4 groups of hinged joints are arranged at intervals along the joints of the main pad and the folding pad, and are all located on both sides of the first horizontal slide rail and the second slide rail.

[0018] Preferably, the leg plate is a rectangular plate.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The hoisting mechanism of the utility model improves the folding pillow plate mechanism and can be detachably installed on the oil cylinder legs. The process of arranging the cushion plate is simple and the cushion plate is not easy to be lost.

[0021] The lifting mechanism described in the utility model has the following advantages: in the initial state, the leg plate is in the first horizontal slide rail on the main pad, and the foldable pad is in a vertically arranged folded state; the operator can rotate the foldable pad from the vertical state to the horizontal state, and the leg plate can slide from the first horizontal slide rail into the second slide rail. The foldable pad, which has a larger area than the main pad, is placed under the leg plate, and the foldable pad is supported on the ground, thereby expanding the force-bearing surface of the leg plate and achieving the same effect as placing a pad.

[0022] The lifting mechanism described in the utility model can slide the leg plate from the second slide rail into the first horizontal slide rail, and flip and fold the foldable pad. The foldable pad is rotated from a horizontal state to a vertical state and fixed on the cylinder leg. After the cylinder leg is retracted, it will not affect the travel of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the folding pillow plate mechanism of the utility model in the folded state;

[0026] Figure 3 This is a schematic diagram of the structure of the foldable pillow plate mechanism of the utility model in an unfolded state;

[0027] Figure 4 This is a structural schematic diagram of the foldable pad of the utility model in use;

[0028] Figure 5 It is a top view of the foldable pillow plate mechanism in the unfolded state;

[0029] Figure 6 This is a structural diagram of the existing cylinder legs.

[0030] In the figure: 1, vehicle body 2, chassis walking mechanism 3, vehicle crane 4, cylinder leg 5, ball head 6, leg plate 7, main pad 8, folding pad 9, first horizontal slide rail 9.1, first side 9.2, second side 10, second slide rail 10.1, third side 10.2, fourth side 11, iron chain 12, mountaineering lock 13, lifting ear B 14, hinge joint. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings:

[0032] The present invention is further described below through specific embodiments, but is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0033] Embodiment 1, as Figure 1-2 As shown, the lifting mechanism comprises a vehicle body 1 with a cab, a chassis walking mechanism 2 is installed below the vehicle body 1, a truck crane 3 is fixedly installed on the vehicle body 1, and the truck crane 3 is located at the rear side of the cab, cylinder legs 4 are arranged on both sides of the vehicle body 1, and the cylinder legs 4 include a cylinder body fixed on the vehicle body 1, and the cylinder body has a piston rod that can be extended or retracted relative to the cylinder body, and the bottom telescopic end of the piston rod is installed with a leg plate 6 through a ball head 5, and the leg plate 6 is installed with a folding pillow plate mechanism.

[0034] The outrigger is one of the main parts of the truck crane, and its function is to increase the supporting base of the crane, reduce the burden on the tires, improve the anti-overturning stability of the vehicle, and improve the lifting capacity. However, the outrigger disc 6 on the conventional oil cylinder outrigger 4 usually has a small supporting surface, and measures need to be taken to ensure the stability of the machinery during lifting operations. Generally, the force-bearing surface of the outrigger disc 6 is expanded by laying pads or sleepers to increase the force-bearing area of ​​the crane oil cylinder outrigger 4 and ensure its stability.

[0035] At present, the process of finding and installing the pads is relatively cumbersome and troublesome, and the pads or sleepers are directly piled up on the car body 1, which is very easy to be lost.

[0036] The utility model improves the folding pillow plate mechanism, which is detachably mounted on the oil cylinder support leg 4, and the process of arranging the cushion plate is simple and easy, and the cushion plate is not easy to be lost.

[0037] Embodiment 2, as Figure 1-2 and Figure 5 As shown, the lifting mechanism comprises a vehicle body 1 with a cab, a chassis walking mechanism 2 is installed below the vehicle body 1, a truck crane 3 is fixedly installed on the vehicle body 1, and the truck crane 3 is located at the rear side of the cab, cylinder legs 4 are arranged on both sides of the vehicle body 1, and the cylinder legs 4 include a cylinder body fixed on the vehicle body 1, and the cylinder body has a piston rod that can be extended or retracted relative to the cylinder body, and the bottom telescopic end of the piston rod is installed with a leg plate 6 through a ball head 5, and the leg plate 6 is installed with a folding pillow plate mechanism.

[0038] Furthermore, the folding pillow plate mechanism includes a main pad 7 and a folding pad 8 hingedly connected to one end of the main pad 7, the main pad 7 is provided with a first horizontal slide rail 9 that slides with the leg plate 6, and the folding pad 8 is provided with a second slide rail 10 along its length direction. The folding pad 8 can be rotated from a horizontal state to a vertical state or from a vertical state to a horizontal state relative to the main pad 7. When the first horizontal slide rail 9 and the second slide rail 10 are in the same horizontal plane, the leg plate 6 can slide from the first horizontal slide rail 9 into the second slide rail 10 or from the second slide rail 10 into the first horizontal slide rail 9.

[0039] Furthermore, the length of the foldable pad 8 is greater than the length of the main pad 7 .

[0040] Reference Figure 2-4In the initial state, the leg plate 6 is in the first horizontal slide rail 9 on the main pad 7, and the foldable pad 8 is in a vertically set folded state; the operator can rotate the foldable pad 8 from the vertical state to the horizontal state, and the leg plate 6 can slide from the first horizontal slide rail 9 into the second slide rail 10. The foldable pad 8, which has a larger area than the main pad 7, is placed under the leg plate 6. The foldable pad 8 is supported on the ground, which expands the force surface of the leg plate 6 and has the same effect as setting a pad.

[0041] By adopting the opposite method, the leg plate 6 can be slid from the second slide rail 10 into the first horizontal slide rail 9, and the foldable pad 8 can be flipped and folded. The foldable pad 8 is rotated from a horizontal state to a vertical state and fixed on the cylinder leg 4. After the cylinder leg 4 is retracted, it will not affect the travel of the vehicle body 1.

[0042] Furthermore, the first horizontal slide rail 9 includes a first side edge 9.1 and a second side edge 9.2, the first side edge 9.1 and the second side edge 9.2 are arranged relatively spaced apart, and enclose the main pad 7 to form a slide groove A opened along the length direction of the main pad 7, and the leg plate 6 can slide in the slide groove A. The structure is reasonable and the processing is convenient.

[0043] Furthermore, the second slide rail 10 includes a third side 10.1 and a fourth side 10.2, the third side 10.1 and the fourth side 10.2 are arranged relatively spaced apart, and enclose the foldable pad 8 to form a slide groove B opened along the length direction of the foldable pad 8, and the leg plate 6 can slide in the slide groove B. The structure is reasonable and the processing is convenient.

[0044] Furthermore, the first side 9.1 and the second side 9.2 are made of L-shaped angle iron, which are welded to the surface of the main pad 7; the third side 10.1 and the fourth side 10.2 are made of L-shaped angle iron, which are welded to the surface of the foldable pad 8. It is convenient to obtain materials and process.

[0045] Furthermore, an iron chain 11 is installed at one end of the folding pad 8 away from the main pad 7 through a lifting ear A, and a mountaineering lock buckle 12 is provided at the other end of the iron chain 11. A lifting ear B13 is provided on the cylinder body of the cylinder leg 4. When the folding pad 8 is rotated from a horizontal state to a vertical state relative to the main pad 7, the mountaineering lock buckle 12 can be detachably hung on the lifting ear B13.

[0046] The foldable pad 8 rotates from a horizontal state to a vertical state, and is fixed on the cylinder leg 4 through the lifting lug A, the iron chain 11, the mountaineering lock buckle 12, and the lifting lug B. After the cylinder leg 4 is retracted, it does not affect the travel of the vehicle body 1.

[0047] Furthermore, the main pad 7 and the folding pad 8 are connected by hinged joints 14 , and two groups of hinged joints are arranged at intervals along the joint seams of the main pad 7 and the folding pad 8 , both of which are located on both sides of the first horizontal slide rail 9 and the second slide rail 10 .

[0048] Furthermore, the leg plate 6 is a rectangular plate.

[0049] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

[0050] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A lifting mechanism, comprising a vehicle body with a cab, a chassis travel mechanism is installed below the vehicle body, a vehicle crane is fixedly installed on the vehicle body, the vehicle crane is located at the rear side of the cab, and cylinder legs are arranged on both sides of the vehicle body, characterized in that: The oil cylinder leg comprises a cylinder body fixed on the vehicle body, the cylinder body is provided with a piston rod which can be extended or retracted relative to the cylinder body, the bottom telescopic end of the piston rod is provided with a leg plate through a ball head, and the leg plate is provided with a folding pillow plate mechanism.

2. The hoisting mechanism according to claim 1, characterized in that: The foldable pillow plate mechanism includes a main pad and a foldable pad hingedly connected to one end of the main pad, the main pad is provided with a first horizontal slide rail that slides with the leg plate, the foldable pad is provided with a second slide rail along its length direction, the foldable pad can be rotated from a horizontal state to a vertical state or from a vertical state to a horizontal state relative to the main pad, when the first horizontal slide rail and the second slide rail are in the same horizontal plane, the leg plate can slide from the first horizontal slide rail into the second slide rail or from the second slide rail into the first horizontal slide rail.

3. The hoisting mechanism according to claim 2, characterized in that: The first horizontal slide rail includes a first side edge and a second side edge. The first side edge and the second side edge are relatively spaced apart and enclose together with the main pad to form a slide groove A which is open along the length direction of the main pad. The leg plate can slide in the slide groove A.

4. The hoisting mechanism according to claim 3, characterized in that: The second slide rail includes a third side and a fourth side, the third side and the fourth side are arranged relatively spaced apart, and together with the foldable pad, form a slide groove B that is open along the length direction of the foldable pad, and the leg plate can slide in the slide groove B.

5. The hoisting mechanism according to claim 4, characterized in that: The first side and the second side are made of angle iron with an L-shaped cross-section, and the first side and the second side are welded to the surface of the main pad; the third side and the fourth side are made of angle iron with an L-shaped cross-section, and the third side and the fourth side are welded to the surface of the folding pad.

6. The hoisting mechanism according to claim 5, characterized in that: An iron chain is installed at one end of the foldable pad away from the main pad through a lifting ear A, and a mountaineering lock is provided at the other end of the iron chain. A lifting ear B is provided on the cylinder body of the cylinder leg. When the foldable pad is rotated from a horizontal state to a vertical state relative to the main pad, the mountaineering lock can be detachably hung on the lifting ear B.

7. The hoisting mechanism according to claim 6, characterized in that: The main pad and the folding pad are connected by hinged joints, and 2-4 groups of hinged joints are arranged at intervals along the joint seams of the main pad and the folding pad, and are all located on both sides of the first horizontal slide rail and the second slide rail.

8. The hoisting mechanism according to claim 7, characterized in that: The leg plate is a rectangular plate.

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