Folding arm type lorry-mounted crane

Abstract

The folding arm type lorry-mounted crane comprises a rotating base, fixing structures and a supporting rod, a fixing rod is assembled at the bottom end of the supporting rod, the fixing rod is installed on the rotating base through the fixing structures, the number of the fixing structures is not less than four, and the fixing structures are annularly distributed between the fixing rod and the rotating base at equal intervals; the fixing structure comprises a lug plate, a U-shaped groove, a bolt, a nut, a circular ring, a through hole, a threaded rod and a nut. According to the folding arm type lorry-mounted crane, the nut is screwed on the bolt, the fixing rod below the supporting rod is installed on the rotating base, the bolt is sleeved with the circular ring, the through hole is aligned with the transverse hole, the through hole is aligned with the transverse hole, and the through hole is aligned with the transverse hole; the threaded rod penetrates into the through hole and the transverse hole, the nut is screwed on the threaded rod, the circular ring is fixed to the bolt, the supporting rod is doubly fixed, and installation of the supporting rod is more stable.

Description

Technical Field

[0001] This patent relates to the field of crane technology, specifically a folding arm truck crane. Background Art

[0002] A truck-mounted crane is a device that uses a hydraulic lifting and telescopic system to achieve the lifting, rotation, and lifting of goods. It is usually installed on a truck. A truck-mounted crane can also be called a truck crane. Truck cranes are mainly divided into two types according to their structural forms: straight-arm truck cranes and folding-arm truck cranes. Generally, folding-arm truck cranes are more commonly used in real life.

[0003] If the existing crane encounters bad weather, there is still the problem of unstable fixation, so there is a need to improve the existing technology.

[0004] Patent content

[0005] The purpose of this patent is to provide a folding arm truck crane to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, this patent provides the following technical solutions: a knuckle-arm truck-mounted crane, comprising a rotating base, a fixed structure, and a support rod, wherein the bottom end of the support rod is equipped with a fixed rod, and the fixed rod is mounted on the rotating base through the fixed structure, and the number of the fixed structures is not less than four, and the fixed structures are distributed in an annular shape and at equal intervals between the fixed rod and the rotating base;

[0007] The fixing structure includes an ear plate, a U-shaped groove, a bolt, a nut, a ring, a through hole, a threaded rod and a nut;

[0008] The ear plate is installed on the fixed rod, the U-shaped groove is opened on the ear plate, the bolt is installed on the rotating base, the U-shaped groove is sleeved on the bolt, the nut is sleeved on the bolt, the ring is sleeved on the bolt, through holes are respectively opened on both sides of the ring, a transverse hole is opened on the bolt, the threaded rod passes through the through hole and the transverse hole, and the nut is sleeved on the threaded rod.

[0009] Preferably, a positioning structure is installed between the nut and the ring. There are two positioning structures. The positioning structures are symmetrically distributed on both sides with the center line of the ring as the center. The positioning structure includes a limiting block and a limiting groove.

[0010] Preferably, the limiting block is mounted on a circular ring, the limiting groove is provided on a nut, and the limiting block is clamped in the limiting groove.

[0011] Preferably, a circular groove is provided on the rotating base, and the fixing rod is placed in the circular groove.

[0012] Preferably, a card slot is provided inside the circular groove, a card block is installed at the bottom end of the fixing rod, the card block is clamped in the card slot, an elastic slot is provided at the end of the card block, and an elastic member is installed inside the elastic slot.

[0013] Preferably, both sides of the end of the clamping block are provided with oblique convex surfaces, and both side walls of the clamping slot are provided with oblique concave surfaces matching the oblique convex surfaces.

[0014] Preferably, a rotating rod is installed above the support rod, a folding arm is installed on the outer wall of the rotating rod, a rotating seat is installed on the lower side of the folding arm, a hydraulic cylinder is installed on the upper end of the rotating base, and the output end of the hydraulic cylinder is connected to the rotating seat.

[0015] Compared with the prior art, the beneficial effects of this patent are: the folding arm truck crane has a simple structure and is easy to operate. The support rod is placed on the rotating base, the U-shaped groove on the ear plate is put on the corresponding bolt, the nut is screwed on the bolt, the fixed rod under the support rod is installed on the rotating base, the ring is put on the bolt, the through hole is aligned with the transverse hole, the threaded rod is passed through the through hole and the transverse hole, and the nut is screwed on the threaded rod to fix the ring on the bolt, the support rod is doubly fixed, and its installation is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of this patent;

[0017] Figure 2 This is a schematic diagram of the positioning structure, limit block and limit groove structure of this patent;

[0018] Figure 3 This is a schematic diagram of the structure of Part A of this patent;

[0019] Figure 4 This is a schematic diagram of the fixing rod and circular groove of this patent.

[0020] In the figure: 1 rotating base, 2 supporting rod, 3 fixing rod, 4 fixing structure, 401 ear plate, 402 U-shaped groove, 403 bolt, 404 nut, 405 ring, 406 through hole, 407 threaded stem = rod, 408 nut, 9 limiting groove, 10 spring groove, 11 clamping block, 12 clamping groove, 13 elastic member, 14 rotating rod, 15 rotating seat, 16 hydraulic cylinder, 17 inclined concave surface, 18 inclined convex surface. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the embodiments described are only part of the embodiments of this patent, not all of them. Based on the embodiments of this patent, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this patent.

[0022] See also Figures 1 to 4 This patent provides a technical solution: a knuckle-arm truck crane, comprising a rotating base 1, a fixed structure 4, and a support rod 2. The bottom end of the support rod 2 is equipped with a fixed rod 3, and the fixed rod 3 is mounted on the rotating base 1 through the fixed structure 4. The number of the fixed structures 4 is not less than four, and the fixed structures 4 are distributed in a circular shape and equidistantly between the fixed rod 1 and the rotating base 2.

[0023] The fixing structure 4 includes an ear plate 401, a U-shaped groove 402, a bolt 403, a nut 404, a ring 405, a through hole 406, a threaded rod 407 and a nut 408;

[0024] The ear plate 401 is installed on the fixed rod 1, the U-shaped groove 402 is opened on the ear plate 401, the bolt 403 is installed on the rotating base 2, the U-shaped groove 402 is sleeved on the bolt 403, the nut 404 is sleeved on the bolt 403, the ring 405 is sleeved on the bolt 403, and through holes 406 are respectively opened on both sides of the ring 405. A transverse hole is opened on the bolt 403, the threaded rod 407 passes through the through hole 406 and the transverse hole, and the nut 408 is sleeved on the threaded rod 407.

[0025] A positioning structure 7 is installed between the nut 404 and the ring 405. There are two positioning structures 7. The positioning structures 7 are symmetrically distributed on both sides with the midline of the ring 405 as the center. The positioning structure 7 includes a limiting block 8 and a limiting groove 9.

[0026] The limiting block 8 is mounted on the ring 405, the limiting groove 9 is provided on the nut 404, and the limiting block 8 is clamped in the limiting groove 9;

[0027] A horizontal hole is opened on the bolt 403, and the horizontal hole is on the same horizontal line as the through holes 406 on both sides of the ring 405. The threaded rod 407 is inserted into the through hole 406 and the horizontal hole, and the nut 408 is screwed on the threaded rod 407 to fix the ring 405 on the bolt 403.

[0028] A circular groove 6 is formed on the rotating base 1 , and the fixing rod 1 is placed in the circular groove 6 .

[0029] The circular groove 6 is provided with a clamping groove 12 inside, and a clamping block 11 is installed at the bottom end of the fixing rod 3. The clamping block 11 is clamped in the clamping groove 12. The end of the clamping block 11 is provided with an elastic groove 10, and an elastic member 13 is installed inside the elastic groove 10.

[0030] By inserting the clamping block 11 into the clamping groove 12 , the fixing rod 3 is installed into the circular groove 6 , and double fixation is achieved through the fixing structure 4 .

[0031] The end of the clamping block 11 is provided with inclined convex surfaces 18 on both sides, and the two side walls of the clamping slot 12 are provided with inclined concave surfaces 17 that match the inclined convex surfaces 18 .

[0032] A rotating rod 14 is installed above the support rod 2, a folding arm 5 is installed on the outer wall of the rotating rod 14, a rotating seat 15 is installed on the lower side of the folding arm 5, and a hydraulic cylinder 16 is installed on the upper end of the rotating base 1, and the output end of the hydraulic cylinder 16 is connected to the rotating seat 15.

[0033] Working process and principle: When in use, the fixing rod 3 is inserted into the circular groove 6. At this time, the block 11 on the fixing rod 34 is inserted into the slot 12. Then the U-shaped groove 402 on the ear plate 401 is sleeved on the corresponding bolt 403. The nut 404 is screwed on the bolt 403 to install the support rod 2 on the rotating base 1. The limit block 8 on the ring 405 is inserted into the limit groove 9 on the nut 404. The through hole 406 is aligned with the horizontal hole, so that the threaded rod 407 passes through the through hole 406 and the horizontal hole, and the nut 408 is screwed on the threaded rod 407 to fix the ring 405 on the bolt 403.

[0034] It will be apparent to those skilled in the art that this patent is not limited to the details of the exemplary embodiments described above, and that this patent can be implemented in other specific forms without departing from the spirit or essential characteristics of this patent. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of this patent is defined by the appended claims rather than the foregoing description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be encompassed within this patent. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A folding arm truck crane, comprising a rotating base (1), a fixed structure (4) and a support rod (2), characterized in that: The bottom end of the support rod (2) is equipped with a fixing rod (3), and the fixing rod (3) is mounted on the rotating base (1) via a fixing structure (4). The number of the fixing structures (4) is not less than four, and the fixing structures (4) are distributed in an annular manner and at equal distances between the fixing rod (1) and the rotating base (2); The fixing structure (4) includes an ear plate (401), a U-shaped groove (402), a bolt (403), a nut (404), a ring (405), a through hole (406), a threaded rod (407) and a nut (408); The ear plate (401) is installed on the fixed rod (1), the U-shaped groove (402) is opened on the ear plate (401), the bolt (403) is installed on the rotating base (2), the U-shaped groove (402) is sleeved on the bolt (403), the nut (404) is sleeved on the bolt (403), the ring (405) is sleeved on the bolt (403), through holes (406) are respectively opened on both sides of the ring (405), a transverse hole is opened on the bolt (403), the threaded rod (407) passes through the through hole (406) and the transverse hole, and the nut (408) is sleeved on the threaded rod (407).

2. The folding arm truck crane according to claim 1, characterized in that: A positioning structure (7) is installed between the nut (404) and the ring (405). The number of the positioning structures (7) is two. The positioning structures (7) are symmetrically distributed on both sides with the center line of the ring (405) as the center. The positioning structure (7) includes a limiting block (8) and a limiting groove (9).

3. The folding arm truck crane according to claim 2, characterized in that: The limiting block (8) is mounted on the circular ring (405), the limiting groove (9) is formed on the nut (404), and the limiting block (8) is clamped in the limiting groove (9).

4. The folding arm truck-mounted crane according to claim 1, characterized in that: A circular groove (6) is provided on the rotating base (1), and the fixing rod (1) is placed in the circular groove (6).

5. The folding arm truck-mounted crane according to claim 4, characterized in that: A clamping groove (12) is provided inside the circular groove (6), a clamping block (11) is installed at the bottom end of the fixing rod (3), the clamping block (11) is clamped in the clamping groove (12), an elastic groove (10) is provided at the end of the clamping block (11), and an elastic member (13) is installed inside the elastic groove (10).

6. The knuckle-arm truck-mounted crane according to claim 5, characterized in that: Both sides of the end of the clamping block (11) are provided with oblique convex surfaces (18), and both side walls of the clamping slot (12) are provided with oblique concave surfaces (17) that match the oblique convex surfaces (18).

7. The knuckle-arm truck-mounted crane according to claim 1, characterized in that: A rotating rod (14) is mounted above the support rod (2), a folding arm (5) is mounted on the outer wall of the rotating rod (14), a rotating seat (15) is mounted on the lower side of the folding arm (5), and a hydraulic cylinder (16) is mounted on the upper end of the rotating base (1), the output end of the hydraulic cylinder (16) is connected to the rotating seat (15).

Images