Bidirectional telescopic beam, supporting leg and engineering machinery vehicle

Abstract

The utility model provides a bidirectional telescopic beam, a supporting leg and an engineering machinery vehicle. The bidirectional telescopic beam comprises an outer sleeve beam, a right telescopic sleeve beam which is sleeved with the outer sleeve beam and stretches out and draws back in the first direction X, a left telescopic sleeve beam which is sleeved with the outer sleeve beam and stretches out and draws back in the second direction Y, and an inner supporting beam which is sleeved with the outer sleeve beam and used for limiting the stretching-out position of the right telescopic sleeve beam and the stretching-out position of the left telescopic sleeve beam. The first direction X and the second direction Y are located on the same axis and are opposite in direction, and the right telescopic sleeve beam and the left telescopic sleeve beam stretch out or retract back at the same time; when the right telescopic sleeve beam and the left telescopic sleeve beam retract, the outer sleeve beam, the right telescopic sleeve beam, the left telescopic sleeve beam and the inner supporting beam are sequentially connected in a sleeved mode from outside to inside in the radial direction. According to the utility model, the left telescopic sleeve beam and the right telescopic sleeve beam are symmetrical, extend and retract in two directions and are uniformly stressed, so that the hoisting operation is good in stability, and unbalance loading and tipping are effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery car technical field especially relates to a two -way telescopic beam, outrigger and engineering machinery car. BACKGROUND

[0002] At present, the existing engineering machinery car such as telescopic outrigger of truck crane, such as the outrigger of container front lifting crane all adopt asymmetric two -way telescopic beam structure, and the telescopic beam includes outer sleeve beam and left and right telescopic sleeve beam arranged in up and down staggered mode in the outer sleeve beam. This structure exists uneven stress and causes box girder deformation risk, and in addition, the contraction size occupies larger space.

[0003] In addition, although the existing symmetric two -way telescopic beam structure, but left and right telescopic sleeve beam must ensure that there is a certain distance overlap after stretching out, therefore, the telescopic span ratio of this structure is small, makes the outrigger unable to be unfolded to the required opening, and cannot guarantee stability. INNOVATION CONTENT

[0004] The utility model aims at providing a two -way telescopic beam, outrigger and engineering machinery car, can realize the two -way symmetric telescopic of large span.

[0005] The utility model discloses a two -way telescopic beam, including outer sleeve beam, right telescopic sleeve beam being sleeved in the inside of outer sleeve beam and telescoping along the first direction X, left telescopic sleeve beam being sleeved in the inside of outer sleeve beam and telescoping along the second direction Y, and the inner support beam for limiting the right telescopic sleeve beam and left telescopic sleeve beam and the extension position of left telescopic sleeve beam, the first direction X and the second direction Y are on the same axis and opposite directions, and the right telescopic sleeve beam and left telescopic sleeve beam are stretched out or retracted simultaneously, when the right telescopic sleeve beam and left telescopic sleeve beam retract, the outer sleeve beam, right telescopic sleeve beam, left telescopic sleeve beam and inner support beam are sequentially sleeved from outside to inside in the radial direction.

[0006] In the above scheme, the telescopic beam structure is optimized, and the outer sleeve beam, right telescopic sleeve beam, left telescopic sleeve beam and inner support beam form a multi -stage nested telescopic beam, so that the left telescopic sleeve beam and right telescopic sleeve beam are symmetric, two -way stretch, and the stress is uniform, and the multi -stage nested two -way telescopic beam has the characteristics of large telescopic span ratio, so that the lifting operation stability is good, and the eccentric load and overturning are effectively prevented.

[0007] Preferably, the inner surface of the right telescopic sleeve beam is provided with a limiting block, the inner surface of the left telescopic sleeve beam is provided with a third sliding block, and the outer surface of the inner support beam is provided with a fourth sliding block and a fifth sliding block.

[0008] The fourth sliding block is in sliding contact with the inner surface of the left telescopic sleeve beam, and the fifth sliding block is in sliding contact with the inner surface of the right telescopic sleeve beam; after the left telescopic sleeve beam is extended, the third sliding block is in limiting contact with the fourth sliding block on the inner side, and after the left telescopic sleeve beam is retracted, the third sliding block is in limiting contact with the fifth sliding block on the inner side; after the right telescopic sleeve beam is extended, the limiting block is in limiting contact with the fifth sliding block on the inner side, and after the right telescopic sleeve beam is retracted, the limiting block is limited in the outer sleeve beam.

[0009] Preferably, the bidirectional telescopic beam further comprises a guide sleeve arranged on the inner surface of the outer sleeve beam, and the inner surface of the guide sleeve is provided with a sixth sliding block and a seventh sliding block, and the sixth sliding block and the seventh sliding block are arranged at two ends of the guide sleeve respectively, the sixth sliding block is in sliding contact with the left telescopic sleeve beam, and the seventh sliding block is in sliding contact with the right telescopic sleeve beam.

[0010] Preferably, the inner surface of the outer sleeve beam is provided with a first groove, the inner surface of the right telescopic sleeve beam is provided with a second groove, the inner surface of the left telescopic sleeve beam is provided with a third groove, the guide sleeve is arranged in the first groove, the sixth sliding block is adapted to the third groove, and the seventh sliding block is adapted to the second groove.

[0011] Preferably, the inner surface of the outer sleeve beam is provided with a first sliding block and a second sliding block, the first sliding block and the second sliding block are arranged at two ends of the outer sleeve beam respectively, the guide sleeve is arranged between the first sliding block and the second sliding block, and the first sliding block is arranged adjacent to the sixth sliding block, and the second sliding block is arranged adjacent to the seventh sliding block.

[0012] Preferably, the thickness of the sixth sliding block > the thickness of the first sliding block > the thickness of the seventh sliding block > the thickness of the second sliding block.

[0013] The utility model also provides a support leg, including telescopic oil cylinder, support leg oil cylinder and above-mentioned bidirectional telescopic beam, the end of left telescopic sleeve beam and right telescopic sleeve beam is provided with one support leg oil cylinder respectively, and each support leg oil cylinder is connected with the outer sleeve beam of bidirectional telescopic beam between one telescopic oil cylinder.

[0014] The utility model also provides an engineering machinery vehicle, including chassis and at least one above-mentioned support leg connected on chassis.

[0015] Compared with the related art, the utility model has the advantages that:

[0016] First, the utility model optimizes the telescopic beam structure, so that the outer sleeve beam, the right telescopic sleeve beam, the left telescopic sleeve beam and the inner support beam form a multi-stage nested telescopic beam, thereby realizing the symmetry, bidirectional extension and retraction of the left telescopic sleeve beam and the right telescopic sleeve beam, uniform stress, and the multi-stage nested bidirectional telescopic beam has the characteristics of large telescopic span ratio, good hoisting operation stability, effective prevention of eccentric load and overturning.

[0017] II. The bidirectional telescopic beam is internally provided with an inner support beam, so that the left and right telescopic sleeve beams do not need to reserve a lap distance after being extended, a larger telescopic span ratio can be realized, and the eccentric load and overturning during hoisting operation can be effectively prevented.

[0018] III. The bidirectional telescopic beam is internally provided with a guide sleeve, so that the left and right telescopic sleeve beams have good telescopic stability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structure schematic view of the bidirectional telescopic beam in a retracted state is provided in the utility model;

[0020] Figure 2 A structure schematic view of the bidirectional telescopic beam in an extended state is provided in the utility model;

[0021] Figure 3 A partial sectional view structure schematic view of the outer sleeve beam;

[0022] Figure 4 A sectional view schematic view along A-A in Figure 3 ;

[0023] Figure 5 An assembly sectional view schematic view of the outer sleeve beam and the guide sleeve;

[0024] Figure 6 A structure schematic view of the guide sleeve;

[0025] Figure 7 An assembly sectional view schematic view of the left telescopic sleeve beam, the right telescopic sleeve beam and the guide sleeve;

[0026] Figure 8 A perspective view of Figure 7 ;

[0027] Figure 9 An enlarged schematic view of B in Figure 7 ;

[0028] Figure 10 A sectional view schematic view along C-C in Figure 7 ;

[0029] Figure 11 A sectional view schematic view along D-D in Figure 7 ;

[0030] Figure 12 An assembly sectional view schematic view of the left telescopic sleeve beam, the right telescopic sleeve beam and the inner support beam;

[0031] Figure 13 A structure schematic view of the inner support beam;

[0032] Figure 14 A structure schematic view of the utility model provides the structure schematic view of the outrigger. Detailed Implementation

[0033] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0034] like Figure 1 , Figure 2 As shown, the bidirectional telescopic beam 10 provided in this embodiment includes an outer outer beam 1, a right telescopic sleeve beam 2, a left telescopic sleeve beam 3, a guide sleeve 4, and an inner support beam 5.

[0035] like Figure 3 , Figure 4 As shown, the outer outer beam 1 includes a first main beam 1-1, a first slider 1-2, a second slider 1-3, and a first groove 1-4. The first main beam 1-1 has a box-shaped structure, and the first groove 1-4 is provided on both its upper and lower inner surfaces, with the first groove 1-4 extending axially along the first main beam 1-1. The first slider 1-2 and the second slider 1-3 are mounted in the first groove 1-4 by screws and are located at opposite ends of the outer outer beam 1. The thickness of the first slider 1-2 is greater than the thickness of the second slider 1-3.

[0036] like Figure 5 As shown, a guide sleeve 4 is embedded in the first groove 1-4, such as... Figure 6 As shown, the guide sleeve 4 consists of two plates spaced vertically apart, with one plate embedded in each of the first grooves 1-4. A sixth slider 4-1 is provided at one end, and a seventh slider 4-2 is provided at the other end. Figure 5 As shown, the sixth slider 4-1 is located inside the first slider 1-2, and the seventh slider 4-2 is located inside the second slider 1-3. The thickness of the sixth slider 4-1 is greater than the thickness of the first slider 1-2, which in turn is greater than the thickness of the seventh slider 4-2, which is greater than the thickness of the second slider 1-3.

[0037] like Figure 7 , Figure 8 As shown, the right telescopic sleeve beam 2 includes a second main beam 2-1, a limiting block 2-2, and a second groove 2-3. Figure 10 As shown, the second main beam 2-1 has a box-shaped structure, and a second groove 2-3 is provided on both its upper and lower outer surfaces. The second groove 2-3 extends through the second main beam 2-1 axially. There are two limiting blocks 2-2; one limiting block 2-2 is installed on each of the upper and lower inner surfaces of the second main beam 2-1 by screws (e.g., ...). Figure 9 As shown), and the limiting block 2-2 is located at Figure 7The left end of the second main beam 2-1.

[0038] As shown in Figure 7 , Figure 8 , the left telescopic sleeve beam 3 includes a third main beam 3-1, a third sliding block 3-2 and a third groove 3-3. As shown in Figure 11 , the third main beam 3-1 is a box structure, and the third groove 3-3 is provided on the outer surface of the upper and lower sides of the third main beam 3-1 and penetrates the third main beam 3-1 in the axial direction. The third sliding block 3-2 is provided on the inner surface of the upper and lower sides of the third main beam 3-1 by screws (as shown in Figure 9 ), and the third sliding block 3-2 is located on the right side of the third main beam 3-1 (as shown in Figure 7 ).

[0039] As shown in , the right telescopic sleeve beam 2 is sleeved in the outer sleeve beam 1, and the left telescopic sleeve beam 3 is sleeved in the outer sleeve beam 1. When the right telescopic sleeve beam 2 and the left telescopic sleeve beam 3 are retracted, the right telescopic sleeve beam 2, the left telescopic sleeve beam 3 and the inner support beam 5 are sequentially sleeved in the outer sleeve beam 1 from the outside to the inside in the radial direction of the outer sleeve beam 1.

[0040] Figure 7 As shown in , the right telescopic sleeve beam 2 is sleeved in the outer sleeve beam 1, and the seventh sliding block 4-2 on the guide sleeve 4 is in sliding fit with the second groove 2-3. The left telescopic sleeve beam 3 is sleeved in the outer sleeve beam 1, and the outer size of the left telescopic sleeve beam 3 is smaller than that of the right telescopic sleeve beam 2, so that the left telescopic sleeve beam 3 can be retracted in the right telescopic sleeve beam 2. The sixth sliding block 4-1 on the guide sleeve 4 is in sliding fit with the third groove 3-3. The fit structure of the sixth sliding block 4-1 and the third groove 3-3 and the fit structure of the seventh sliding block 4-2 and the second groove 2-3 can limit, guide and support the sliding of the right telescopic sleeve beam 2 and the left telescopic sleeve beam 3.

[0041] Figure 13 As shown in Figure 12 , the inner support beam 5 is sleeved in the third main beam 3-1 and the second main beam 2-1, and the inner support beam 5 can slide left and right in the third main beam 3-1 and the second main beam 2-1, which can play the roles of supporting and guiding. The fourth sliding block 5-3 is in sliding contact with the inner surface of the third main beam 3-1, and the fifth sliding block 5-2 is in sliding contact with the inner surface of the second main beam 2-1.

[0042] As shown in Figure 1 ,Figure 2 , Figure 7 , Figure 13 As shown, the right telescopic sleeve beam 2 extends and retracts along the first direction X inside the outer sleeve beam 1, and the left telescopic sleeve beam 3 extends and retracts along the second direction Y inside the outer sleeve beam 1. The first direction X and the second direction Y are on the same axis and in opposite directions. The right telescopic sleeve beam 2 and the left telescopic sleeve beam 3 extend or retract simultaneously. After the left telescopic sleeve beam 3 extends, the third slider 3-2 makes limiting contact with the fourth slider 5-3 on the inner side. After the left telescopic sleeve beam 3 retracts, the third slider 3-2 makes limiting contact with the fifth slider 5-2 on the inner side. After the right telescopic sleeve beam 2 extends, the limiting block 2-2 makes limiting contact with the fifth slider 5-2 on the inner side. After the right telescopic sleeve beam 2 retracts, the limiting block 2-2 makes limiting contact with the sixth slider 4-1 on the inner side. "Inner side" refers to the side closer to the inside of the outer sleeve beam 1.

[0043] like Figure 1 , Figure 2 As shown, the outer outer beam 1, right telescopic sleeve beam 2, left telescopic sleeve beam 3, guide sleeve 4, and inner support beam 5 form a multi-level nested telescopic beam. After the outer outer beam 1 is fixed, the right telescopic sleeve beam 2 slides bidirectionally along the first direction X and the left telescopic sleeve beam 3 slides bidirectionally along the second direction Y under the drive of external force. When the right telescopic sleeve beam 2 and the left telescopic sleeve beam 3 extend to their ends, the span of the telescopic beam can reach more than twice that of the outer outer beam 1, achieving a long span. Figure 1 As shown, when the right telescopic sleeve beam 2 and the left telescopic sleeve beam 3 are fully retracted, their lengths are consistent with those of the outer sleeve beam 1.

[0044] The installation steps for the bidirectional telescopic beam are as follows:

[0045] S1, first insert the left end of the support beam 5 into the right end of the left telescopic sleeve beam 3, then insert the right end of the inner support beam 5 into the left end of the right telescopic sleeve beam 2. The limiting block 2-2 and the third slider 3-2 are installed after the inner support beam 5 is inserted, forming the following... Figure 12 Components.

[0046] S2, the guide sleeve 4 is fitted into the first groove 1-4 of the outer sleeve beam 1 and fixed with screws, forming as shown in the figure. Figure 3 The components shown.

[0047] S3, insert the component from step S1 from the right end of the component from step S2 to complete the assembly.

[0048] like Figure 14 As shown, this utility model also provides a support leg, including a telescopic cylinder 20, a support leg cylinder 30, and the aforementioned bidirectional telescopic beam 10. Each of the extended ends of the left telescopic sleeve beam 3 and the right telescopic sleeve beam 2 is provided with a support leg cylinder 30, and each support leg cylinder 30 is connected to a telescopic cylinder 20 between itself and the outer sleeve beam 1 of the bidirectional telescopic beam.

[0049] The utility model further provides an engineering machinery vehicle, including chassis and above at least one support leg. The outer sleeve beam 1 in support leg is fixed on the chassis or is integrated design with chassis.

[0050] The support leg provided by the utility model has the characteristics of large telescopic span ratio, symmetrical arrangement of left and right telescopic sleeve beams, uniform stress, etc., can be widely applied in specific structures such as engineering machinery vehicles (such as automobile crane H type telescopic support leg or container front crane lifting appliance), etc., has the advantages of large horizontal span, good lifting operation stability, etc., and effectively prevents eccentric load and overturning.

[0051] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structures or equivalent process transformations using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A bi-directional telescopic beam comprising an outer beam (1), characterized in that, The right telescopic sleeve beam (2) and the left telescopic sleeve beam (3) are simultaneously extended or retracted, and the outer sleeve beam (1), the right telescopic sleeve beam (2), the left telescopic sleeve beam (3) and the inner support beam (5) are sequentially sleeved from the outside to the inside in the radial direction when the right telescopic sleeve beam (2) and the left telescopic sleeve beam (3) are retracted.

2. The bidirectional telescoping beam of claim 1, wherein, The inner surface of the right telescopic sleeve beam (2) is provided with a limiting block (2-2), the inner surface of the left telescopic sleeve beam (3) is provided with a third sliding block (3-2), and the outer surface of the inner support beam (5) is provided with a fourth sliding block (5-3) and a fifth sliding block (5-2). The fourth sliding block (5-3) is in sliding contact with the inner surface of the left telescopic sleeve beam (3), and the fifth sliding block (5-2) is in sliding contact with the inner surface of the right telescopic sleeve beam (2); after the left telescopic sleeve beam (3) is extended, the third sliding block (3-2) is in limiting contact with the fourth sliding block (5-3) on the inner side, and after the left telescopic sleeve beam (3) is retracted, the third sliding block (3-2) is in limiting contact with the fifth sliding block (5-2) on the inner side; after the right telescopic sleeve beam (2) is extended, the limiting block (2-2) is in limiting contact with the fifth sliding block (5-2) on the inner side, and after the right telescopic sleeve beam (2) is retracted, the limiting block (2-2) is limited in the outer sleeve beam (1).

3. The bi-directional telescoping beam of claim 1, wherein, A guide sleeve (4) is arranged on the inner surface of the outer sleeve beam (1), the inner surface of the guide sleeve (4) is provided with a sixth sliding block (4-1) and a seventh sliding block (4-2), the sixth sliding block (4-1) and the seventh sliding block (4-2) are arranged at two ends of the guide sleeve (4), the sixth sliding block (4-1) is in sliding contact with the left telescopic sleeve beam (3), and the seventh sliding block (4-2) is in sliding contact with the right telescopic sleeve beam (2).

4. The bi-directional telescoping beam of claim 3, wherein, The inner surface of the outer sleeve beam (1) is provided with a first groove (1-4), the inner surface of the right telescopic sleeve beam (2) is provided with a second groove (2-3), the inner surface of the left telescopic sleeve beam (3) is provided with a third groove (3-3), the guide sleeve (4) is installed in the first groove (1-4), the sixth sliding block (4-1) is adapted to the third groove (3-3), and the seventh sliding block (4-2) is adapted to the second groove (2-3).

5. The bi-directional telescoping beam of claim 3, wherein, The inner surface of the outer sleeve beam (1) is provided with a first sliding block (1-2) and a second sliding block (1-3), the first sliding block (1-2) and the second sliding block (1-3) are arranged at two ends of the outer sleeve beam (1), the guide sleeve (4) is arranged between the first sliding block (1-2) and the second sliding block (1-3), the first sliding block (1-2) is arranged adjacent to the sixth sliding block (4-1), and the second sliding block (1-3) is arranged adjacent to the seventh sliding block (4-2).

6. The bi-directional telescoping beam of claim 5, wherein, The thickness of the sixth slider (4-1) > the thickness of the first slider (1-2) > the thickness of the seventh slider (4-2) > the thickness of the second slider (1-3).

7. A support leg comprising a telescopic oil cylinder (20) and a support oil cylinder (30), characterized in that The bidirectional telescopic beam further comprises the left telescopic sleeve beam (3) and the right telescopic sleeve beam (2), each of which is provided with a support leg oil cylinder (30) at the end thereof, and each of the support leg oil cylinders (30) is connected with the outer sleeve beam (1) of the bidirectional telescopic beam through a telescopic oil cylinder (20).

8. An engineering machine vehicle comprising a chassis, characterised in that, The bidirectional telescopic beam further comprises at least one support leg according to claim 7 connected to the chassis.

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